A cover structure and a cooking device

Abstract

The present invention provides a cover structure and a cooking device. An accommodation cavity is provided inside the cover structure, and an air inlet and an air outlet are respectively connected to one side of the accommodation cavity; a power member acts on the accommodation cavity and is adapted to push the gas inside the accommodation cavity to flow. By acting the power member on the accommodation cavity, air can be blown inside the power member to push the gas in the accommodation cavity to flow, so that the flowing gas enters through the air inlet in sequence and is discharged through the air outlet. Since the flowing gas will take away heat in the accommodation cavity, the cover structure can be indirectly cooled, thereby quickly reducing the pressure of a heating cavity device, such as an electric pressure cooker. Quick pressure relief can be achieved without opening the pressure limiting valve, which can effectively avoid overflowing of the pot and shorten the pressure relief time, improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen utensils, and particularly relates to a lid structure and a cooking appliance. Background Art

[0002] Currently, existing cooking appliances such as electric pressure cookers cook food in a high-pressure state, so the cooked food has a better taste and a shorter cooking time. However, after the food is cooked under high pressure in an electric pressure cooker, if the pressure-limiting valve is opened to release the pressure, the phenomenon of food overflowing the pot will occur. On the one hand, it is unhygienic, and on the other hand, it may cause burns to users. If the pressure-limiting valve is not opened and the natural cooling method is used to release the pressure, the pressure release time will be very long, seriously affecting the user experience. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of long pressure release time of the pressure cooker in the prior art, so as to provide a lid structure and a cooking appliance.

[0004] The present invention provides a lid structure. An accommodation cavity is arranged inside the lid structure, and an air inlet and an air outlet are respectively connected to one side of the accommodation cavity;

[0005] A power member acts on the accommodation cavity and is adapted to promote the flow of gas in the accommodation cavity.

[0006] A plurality of air ducts adjacent to each other are arranged in the accommodation cavity, and the air ducts connect the air inlet and the air outlet.

[0007] The air ducts are arranged in a ring with the center of the accommodation cavity as the center of the circle.

[0008] The air inlet and the air outlet are symmetrically arranged with respect to the central axis of the accommodation cavity.

[0009] The lid structure includes: a heat preservation base plate including the air inlet and the air outlet;

[0010] A cooling plate is fixedly connected to the heat preservation base plate and forms the accommodation cavity.

[0011] The cooling plate includes: a plurality of surrounding ribs, which are concentrically annular with the center of the cooling plate as the center of the circle, protrude towards the heat preservation base plate, and are in contact with the inner wall of the heat preservation base plate to form the air ducts.

[0012] The surrounding ribs are evenly arranged at equal intervals.

[0013] The heat preservation base plate includes a plurality of first heat dissipation ribs respectively arranged inside each air duct. The first heat dissipation ribs extend towards the cooling plate, and there is a gap between the first heat dissipation ribs and the corresponding side of the cooling plate.

[0014] A second heat dissipation rib is provided at a position of the cooling plate corresponding to the air duct. A plurality of the second heat dissipation ribs extend toward the heat preservation seat plate, and a gap is provided between the first heat dissipation rib and the second heat dissipation rib.

[0015] The first heat dissipation rib and the second heat dissipation rib are correspondingly and spaced apart in the middle of the air duct.

[0016] In the accommodation cavity, air guiding parts are respectively provided at positions corresponding to the air inlet and the air outlet. The air guiding parts communicate with the air duct. The bottom surface of the air guiding part is a convex part, and the convex part is arranged on the surface of the cooling plate and protrudes toward the air inlet and the air outlet respectively.

[0017] A ventilation hole is provided in the middle of the cooling plate, and the ventilation hole and the heat preservation seat plate cooperate to form an inner groove with an opening facing away from the heat preservation seat plate.

[0018] A heat conduction part is provided on the bottom surface of the cooling plate.

[0019] The heat conduction part is arranged in a corrugated curved surface.

[0020] A sealing ring is provided at the connection between the heat preservation seat plate and the cooling plate.

[0021] The present invention also provides a cooking device, including a pot body with a heating cavity arranged inside;

[0022] The above-mentioned cover body structure is arranged on the pot body, and the bottom side of the accommodation cavity of the cover body structure is adjacently arranged to the heating cavity.

[0023] The cooking device is an electric pressure cooker.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The present invention provides a cover body structure. An accommodation cavity is arranged inside the cover body structure. An air inlet and an air outlet are respectively connected to one side of the accommodation cavity; a power member acts on the accommodation cavity and is adapted to push the gas in the accommodation cavity to flow.

[0026] By acting the power member on the accommodation cavity, air can be blown inside the power member to push the gas in the accommodation cavity to flow, so that the flowing gas enters through the air inlet in sequence and is discharged through the air outlet. Since the flowing gas will take away heat in the accommodation cavity, the temperature of the cover body structure can be indirectly reduced, thereby quickly reducing the pressure of a device provided with a heating cavity, such as an electric pressure cooker, and rapid pressure relief can be achieved without opening the pressure limiting valve, which can effectively avoid overflowing of the pot and shorten the pressure relief time, improving the user experience.

[0027] 2. In the cover body structure provided by the present invention, a plurality of air ducts adjacent to each other are arranged in the accommodation cavity, and the air ducts connect the air inlet and the air outlet.

[0028] The setting of the air duct structure increases the heat-conducting surface in the accommodating cavity, increases the heat-conducting area through which the gas flowing in the accommodating cavity passes, improves the efficiency of the air flow taking away heat. Similarly, after the cover body structure is arranged in the cooking device, the pressure in the pot drops faster, the waiting time of the user is shorter, and the use experience is better. In addition, the setting of the air duct serves as a supporting structure, increases the strength of the accommodating cavity, and avoids the deformation of the bottom surface of the accommodating cavity under the high pressure generated in the heating cavity.

[0029] 3. In the cover body structure provided by the present invention, the air inlet and the air outlet are symmetrically arranged relative to the central axis of the accommodating cavity.

[0030] The air inlet and the air outlet are oppositely arranged along the central axis of the accommodating cavity, so that the gas flows through both sides of the connecting line between the air inlet and the air outlet in the accommodating cavity at the same time, and the travel distances are similar, enabling the gas to flow through each area in the accommodating cavity in a shorter time, improving the efficiency of the gas taking away heat, and effectively reducing the pressure relief time.

[0031] 4. In the cover body structure provided by the present invention, the first heat dissipation rib and the second heat dissipation rib are correspondingly arranged at intervals in the middle of the air duct.

[0032] By arranging the first heat dissipation rib and the second heat dissipation rib, the heat-conducting surface in the accommodating cavity is increased, the heat-conducting area through which the gas flowing in the accommodating cavity passes is increased, the efficiency of the air flow taking away heat is improved, the pressure in the pot drops faster, the waiting time of the user is shorter, and the use experience is better; the first heat dissipation rib and the second heat dissipation rib are correspondingly arranged at intervals. On the one hand, the heat dissipation ribs are arranged on the same vertical plane, reducing the influence on the air flow in the air duct. On the other hand, the heat dissipation in each position in the air duct can be made uniform, improving the efficiency of the air flow taking away heat.

[0033] 5. In the cover body structure provided by the present invention, air guiding parts are respectively arranged in the accommodating cavity corresponding to the air inlet and the air outlet. The air guiding parts are communicated with the air duct. The bottom surface of the air guiding part is a convex part. The convex part is arranged on the surface of the cooling plate and protrudes towards the air inlet and the air outlet respectively.

[0034] By providing an air guiding part, multiple air ducts can be connected to the air inlet and the air outlet simultaneously. With such a setting, on the one hand, it is convenient for the air flow from the air inlet to uniformly flow into each air duct, enabling multiple air ducts to work efficiently at the same time and improving the movement efficiency of the power component; on the other hand, it is convenient for the setting of the power component, allowing the power component to provide the power for the gas flow in each air duct simultaneously. The air guiding part protrudes towards the air inlet and the air outlet, forming a conical air guiding surface, which smoothly guides the air flow brought from the air inlet to the surrounding air ducts and smoothly converges the air flow in the air ducts to the air outlet, reducing air flow friction, making the incoming air flow evenly distributed, reducing the air flow resistance. At the same time, the convex part is concave at the corresponding position on the back side of the cooling plate, increasing the heat dissipation area of the cooling plate, improving the cooling efficiency, and effectively reducing the pressure relief time.

[0035] 6. For the lid structure provided by the present invention, a ventilation hole is provided in the middle of the cooling plate, and the ventilation hole cooperates with the heat preservation seat plate to form an inner groove with an opening facing away from the heat preservation seat plate.

[0036] This setting increases the contact heat conduction area between the accommodation cavity and the heating cavity, improves the efficiency of the air flow taking away heat, enables the pressure in the pot to drop faster, shortens the waiting time of the user, and provides a better user experience.

[0037] 7. For the lid structure provided by the present invention, the heat conducting part is arranged as a corrugated curved surface.

[0038] This setting increases the heat conduction area between the cooling plate and the heating cavity, improves the efficiency of the air flow taking away heat, enables the pressure in the pot to drop faster, shortens the waiting time of the user, and provides a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a schematic exploded view of the structure of the lid structure provided in the embodiment of the present invention;

[0041] Figure 2 For Figure 1 the schematic three-dimensional structure view of the lid structure shown;

[0042] Figure 3 For Figure 1 the schematic three-dimensional structure view of the lid structure from another angle shown;

[0043] Figure 4 For Figure 1Schematic cross-sectional view of the cover structure shown;

[0044] Figure 5 is Figure 4 Enlarged schematic view of part A of the cover structure shown;

[0045] Figure 6 is Figure 1 Schematic perspective view of the cooling plate of the cover structure shown;

[0046] Figure 7 is Figure 6 Schematic perspective view of the back side of the cooling plate of the cover structure shown;

[0047] Figure 8 is Figure 1 Schematic perspective view of the heat insulation base body of the cover structure shown;

[0048] Figure 9 is Figure 6 Schematic perspective view of another embodiment of the cooling plate;

[0049] Figure 10 is with Figure 9 Schematic perspective view of the back side of the cooling plate shown;

[0050] Figure 11 is Figure 9 Schematic perspective view of another embodiment of the cooling plate;

[0051] Figure 12 is with Figure 11 Schematic perspective view of the back side of the cooling plate shown;

[0052] Figure 13 is Figure 12 Schematic view of another embodiment of the cooling plate;

[0053] Figure 14 is Figure 13 Schematic view of another embodiment of the cooling plate;

[0054] Explanation of reference numerals:

[0055] 1 - Accommodation cavity; 2 - Heat insulation base plate; 3 - Cooling plate; 5 - Sealing ring; 11 - Air duct; 12 - Air guiding part; 13 - Inner groove; 21 - Air inlet; 22 - Air outlet; 23 - First heat dissipation rib; 31 - Enclosing rib; 32 - Second heat dissipation rib; 33 - Ventilation hole; 34 - Heat conduction part; 35 - Protrusion part. Detailed implementation method

[0056] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0057] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0058] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0059] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0060] As Figure 1 - Figure 13 , in this embodiment, a cover body structure is provided. An accommodation cavity 1 is arranged inside the cover body structure, and an air inlet 21 and an air outlet 22 are respectively connected to one side of the accommodation cavity 1; a power member acts on the accommodation cavity 1 and is adapted to promote the gas flow in the accommodation cavity 1. The installation position of the power member is not limited. In this embodiment, the power member is arranged outside the accommodation cavity 1 and connected to the air inlet 21.

[0061] By applying the power member to the inside of the accommodation cavity 1, air can be blown inside the power member to promote the gas flow in the accommodation cavity 1, so that the flowing gas enters through the air inlet 21 in sequence and is discharged through the air outlet 22. Since the flowing gas will take away heat in the accommodation cavity 1, the temperature of the cover body structure can be indirectly reduced, thereby quickly reducing the pressure of the electric pressure cooker, and rapid pressure relief can be achieved without opening the pressure limiting valve, which can effectively avoid overflowing of the pot and shorten the pressure relief time, improving the user experience.

[0062] The accommodating cavity 1 is provided with a plurality of adjacent air ducts 11, and the air ducts 11 connect the air inlet 21 and the air outlet 22. The air ducts 11 are arranged in a ring shape with the center of the accommodating cavity 1 as the center of the circle. The arrangement of the structure of the air ducts 11 increases the heat-conducting surface in the accommodating cavity 1, increases the heat-conducting area through which the gas flowing in the accommodating cavity 1 passes, improves the efficiency of the air flow taking away heat. Also, after the cover body structure is arranged in the cooking device, the pressure in the pot drops faster, the waiting time of the user is shorter, and the use experience is better. In addition, the arrangement of the air ducts 11 serves as a supporting structure, increases the strength of the accommodating cavity 1, and prevents the bottom surface of the accommodating cavity 1 from deforming under the high pressure generated in the heating cavity.

[0063] As a transformable embodiment, the air ducts 11 may not be provided in the accommodating cavity 1, and the accommodating cavity 1 is a cavity and is connected to the air inlet 21 and the air outlet 22.

[0064] As another transformable embodiment, the air ducts 11 may not be provided in the accommodating cavity 1, and the inner surface of the accommodating cavity 1 is arranged as a corrugated curved surface, and the protruding structures on the relatively arranged inner surfaces do not come into contact.

[0065] As another transformable embodiment, the air ducts 11 may not be provided in the accommodating cavity 1, and the inner surface of the accommodating cavity 1 is provided with a plurality of protrusions in the shape of dots, columns or cones, and gaps are provided between the protrusions.

[0066] The air inlet 21 and the air outlet 22 are symmetrically arranged with respect to the central axis of the accommodating cavity 1. The air inlet 21 and the air outlet 22 are oppositely arranged along the central axis of the accommodating cavity 1, so that the gas flows through both sides of the connection line between the air inlet 21 and the air outlet 22 in the accommodating cavity 1 at the same time, and the travel distances are similar, so that the gas flows through each area in the accommodating cavity 1 in a shorter time, improving the efficiency of the gas taking away heat and effectively reducing the pressure relief time.

[0067] The cover body structure includes a heat preservation base plate 2 and a cooling plate 3. The heat preservation base plate 2 includes an air inlet 21 and an air outlet 22. The cooling plate 3 is fixedly connected to the heat preservation base plate 2 and forms the accommodating cavity 1. In this embodiment, a plurality of uniformly arranged mounting parts are provided on the outer edge of the cooling plate 3. The mounting parts protrude away from the center of the cooling plate 3, and threaded holes are provided thereon. The threaded holes on the mounting parts correspond to the threaded holes provided on the outer edge of the heat preservation base plate 2. In addition, screw holes are also provided between the heat preservation base plate 2 and the cooling plate 3, and the cooling plate 3 is fixedly connected to the heat preservation base plate 2 by screws. Such an arrangement facilitates the disassembly and assembly of the cover body structure, and at the same time has a simple structure and is easy to implement.

[0068] The cooling plate 3 includes a plurality of surrounding ribs 31, which are concentrically annular with the center of the cooling plate 3 as the center of the circle, protrude towards the heat preservation base plate 2, are in contact with the inner wall of the heat preservation base plate 2 and form the air ducts 11, and the surrounding ribs 31 are evenly arranged at equal intervals.

[0069] The heat-insulating base plate 2 includes a plurality of first heat dissipation ribs 23 respectively arranged inside each air duct 11. The first heat dissipation ribs 23 extend towards the cooling plate 3, and there is a gap on the side corresponding to the cooling plate 3. The part of the cooling plate 3 corresponding to the air duct 11 is provided with second heat dissipation ribs 32. A plurality of second heat dissipation ribs 32 extend towards the heat-insulating base plate 2, and there is a gap between the first heat dissipation ribs 23 and the second heat dissipation ribs 32. The first heat dissipation ribs 23 and the second heat dissipation ribs 32 are correspondingly arranged at intervals in the middle of the air duct 11.

[0070] By providing the first heat dissipation ribs 23 and the second heat dissipation ribs 32, the heat conduction surface in the accommodation cavity 1 is increased, the heat conduction area through which the flowing gas in the accommodation cavity 1 flows is increased, the efficiency of the air flow taking away heat is improved, the pressure in the pot drops faster, the waiting time of the user is shorter, and the use experience is better; the first heat dissipation ribs 23 and the second heat dissipation ribs 32 are correspondingly arranged at intervals. On the one hand, the heat dissipation ribs are arranged on the same vertical plane, reducing the influence on the air flow in the air duct 11. On the other hand, the heat dissipation at each position in the air duct 11 can be made uniform, improving the efficiency of the air flow taking away heat.

[0071] Air guiding parts 12 are respectively arranged in the accommodation cavity 1 corresponding to the air inlet 21 and the air outlet 22. The air guiding parts 12 communicate with the air ducts 11. The bottom surface of the air guiding part 12 is a convex part 35. The convex part 35 is arranged on the surface of the cooling plate 3 and protrudes towards the air inlet 21 and the air outlet 22 respectively. In this embodiment, the air guiding part 12 is a cavity, and the end of the part of the air duct 11 connected to the air guiding part 12 has a bend towards the air guiding part 12.

[0072] By providing the air guiding parts 12, a plurality of air ducts 11 can be connected to the air inlet 21 and the air outlet 22 at the same time. Such a setting, on the one hand, facilitates the uniform inflow of the air flow from the air inlet 21 into each air duct 11, realizing the simultaneous and efficient operation of a plurality of air ducts 11 and improving the movement efficiency of the power component; on the other hand, it is convenient for the setting of the power component, so that the power component can provide the power for the air flow in each air duct 11 at the same time; the air guiding parts 12 protrude towards the air inlet 21 and the air outlet 22 to form a conical air guiding surface, guiding the air flow brought from the air inlet 21 to the surrounding air ducts 11 smoothly and collecting the air flow in the air ducts 11 to the air outlet 22 smoothly, reducing air flow friction, making the inflowing air distributed uniformly, reducing the air flow resistance. At the same time, the convex part 35 is concave at the corresponding position on the back side of the cooling plate 3, increasing the heat dissipation area of the cooling plate 3, improving the cooling efficiency, and effectively reducing the pressure relief time.

[0073] A ventilation hole 33 is arranged in the middle of the cooling plate 3. The ventilation hole 33 and the heat-insulating base plate 2 cooperate to form an inner groove 13 with an opening facing away from the heat-insulating base plate and towards the heating cavity. Such a setting increases the contact heat conduction area between the accommodation cavity 1 and the heating cavity, improves the efficiency of the air flow taking away heat, makes the pressure in the pot drop faster, the waiting time of the user is shorter, and the use experience is better.

[0074] As a transformable embodiment, the first heat dissipation rib 23 and the second heat dissipation rib 32, or the inner groove 13 may not be provided.

[0075] As another transformable embodiment, only the first heat dissipation rib 23 or the second heat dissipation rib 32 is provided in the air duct.

[0076] A heat conduction part 34 is provided on the bottom surface of the cooling disc 3. In this embodiment, the heat conduction part 34 is arranged as a corrugated curved surface. Such an arrangement increases the heat conduction area between the cooling disc 3 and the heating cavity, improves the efficiency of the air flow taking away heat, enables the pressure inside the pot to drop faster, shortens the waiting time of the user, and provides a better use experience.

[0077] As a transformable embodiment, the heat conduction part 34 may be a plurality of dot-shaped protrusions, which are evenly distributed along the bottom surface of the cooling disc 3.

[0078] As another transformable embodiment, the heat conduction part 34 may be a plurality of cylindrical protrusions, which are evenly distributed along the bottom surface of the cooling disc 3;

[0079] As another transformable embodiment, the heat conduction part 34 may be a plurality of conical protrusions, which are evenly distributed along the bottom surface of the cooling disc 3;

[0080] As another transformable embodiment, the heat conduction part 34 may not be provided, and the bottom surface of the cooling disc 3 is a plane.

[0081] A sealing ring 5 is provided at the connection between the heat preservation seat plate 2 and the cooling disc 3. The sealing ring 5 is respectively provided at the connection position between the outer edge of the cooling disc 3 and the heat preservation seat plate 2, and at the position where the ventilation hole 33 cooperates with the heat preservation seat plate 2. In addition, a sealing ring 5 is also provided at the screw connection between the heat preservation seat plate 2 and the cooling disc 3. The multiple settings of the sealing ring 5 ensure the airtightness of the cover body structure, prevent the food inside the heating cavity from escaping, and improve the safety and airtightness of the device.

[0082] The present invention also provides a cooking device, including a pot body with a heating cavity arranged inside; and the above-mentioned cover body structure, the cover body structure is arranged on the pot body, and the bottom side of the accommodation cavity 1 of the cover body structure is arranged adjacent to the heating cavity.

[0083] In this embodiment, the cooking device is an electric pressure cooker.

[0084] Obviously, the above embodiments are merely examples given for clear illustration, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A cover structure, characterized in that, An accommodating cavity (1) is arranged inside the cover body structure, and an air inlet (21) and an air outlet (22) are respectively connected to one side of the accommodating cavity (1); A power component acts on the accommodating cavity (1) and is adapted to promote the flow of gas inside the accommodating cavity (1); A plurality of adjacent air ducts (11) are arranged inside the accommodating cavity (1), and the air ducts (11) connect the air inlet (21) and the air outlet (22); The cover body structure further includes: A heat preservation base plate (2) including the air inlet (21) and the air outlet (22); A cooling plate (3) fixedly connected to the heat preservation base plate (2) and forming the accommodating cavity (1); Air guiding parts (12) are respectively arranged at positions corresponding to the air inlet (21) and the air outlet (22) inside the accommodating cavity (1). The air guiding parts (12) communicate with the air ducts (11). The bottom surface of the air guiding part (12) is a convex part (35). The convex part (35) is arranged on the surface of the cooling plate (3) and protrudes towards the air inlet (21) and the air outlet (22) respectively, forming a conical air guiding surface; The heat preservation base plate (2) includes a plurality of first heat dissipation ribs (23) respectively arranged inside each air duct (11); second heat dissipation ribs (32) are arranged at positions of the cooling plate (3) corresponding to the air ducts (11); the first heat dissipation ribs (23) and the second heat dissipation ribs (32) are arranged at intervals corresponding to each other in the middle of the air duct (11).

2. The cover structure according to claim 1, wherein, The air ducts (11) are arranged in a ring with the center of the accommodating cavity (1) as the center of the circle.

3. The cover structure according to claim 2, characterized in that, The air inlet (21) and the air outlet (22) are symmetrically arranged with respect to the central axis of the accommodating cavity (1).

4. The cover structure according to claim 1, wherein The cooling plate (3) includes: A plurality of surrounding ribs (31) are concentrically arranged in a ring with the center of the cooling plate (3) as the center of the circle, protrude towards the heat preservation base plate (2), and are in contact with the inner wall of the heat preservation base plate (2) to form the air ducts (11).

5. The cover structure according to claim 4, wherein The surrounding ribs (31) are evenly arranged at equal intervals.

6. The cover structure according to claim 5, wherein, The first heat dissipation ribs (23) extend towards the cooling plate (3) and there is a gap on one side corresponding to the cooling plate (3).

7. The cover structure according to claim 6, wherein, A plurality of the second heat dissipation ribs (32) extend towards the heat preservation base plate (2), and there is a gap between the first heat dissipation ribs (23) and the second heat dissipation ribs (32).

8. The cover structure according to claim 1, characterized in that A ventilation hole (33) is arranged in the middle of the cooling plate (3), and the ventilation hole (33) and the heat preservation base plate (2) cooperate to form an inner groove (13) with an opening facing away from the heat preservation base plate (2).

9. The cover structure according to claim 8, wherein, A heat conducting part (34) is arranged on the bottom surface of the cooling plate (3).

10. The cover structure according to claim 9, wherein, The heat conducting part (34) is arranged in a corrugated curved surface.

11. The cover structure according to claim 1, characterized in that, A sealing ring (5) is arranged at the connection between the heat preservation base plate (2) and the cooling plate (3).

12. A cooking device, characterized in that, Including A pot body with a heating cavity arranged inside; The cover body structure according to any one of claims 1 - 11 is arranged on the pot body, and the bottom side of the accommodating cavity (1) of the cover body structure is arranged adjacent to the heating cavity.

13. The cooking device according to claim 12, characterized in that, The cooking device is an electric pressure cooker.

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