A heat collection structure, a cover assembly and a pressure cooker

Abstract

The present invention provides a heat collection structure, a cover body assembly and a pressure cooker. One end of the cross-section of the heat dissipation body along the longitudinal axis is set in a water droplet shape. According to the principle of fluid mechanics, the angle between the arc side of the water droplet-shaped structure and the incoming cooling air has a great influence on the heat exchange amount of the fins. When the arc surface of the water droplet shape faces the cooling air head-on, the cooling air flow will smoothly flow through each surface of the fins. When the side of the water droplet shape faces the wind, the cooling air flow will be blocked to a great extent. Therefore, through the above setting method, the effective contact area between the heat dissipation body itself and the cooling air is significantly increased, thereby effectively improving the heat exchange effect, and further improving the temperature reduction effect on the pressure cooker. At the same time, since the heat collection structure itself has a large area, it can be covered above the entire inner pot. Therefore, compared with the prior art in which the air flow directly acts on the outer side wall of the inner pot, the technical solution of the present application can effectively increase the heat exchange area and the heat exchange effect.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure cooking devices, and particularly relates to a heat collection structure, a lid assembly and a pressure cooker. Background Art

[0002] Due to the advantages of safety and convenience, pressure cookers have been widely used at present. An electric pressure cooker raises the pressure inside the inner pot, so that the boiling point of water rises above 100 °C, thereby quickly cooking food. However, when the electric pressure cooker finishes cooking, since the pressure inside the pot is still too high, it is necessary to wait for the pressure to gradually drop below the safety limit before the lid can be opened. In the existing pressure cookers, there is usually no function to forcibly shorten the pressure relief time. Therefore, generally, the pressure relief time is too long, which brings great inconvenience to users who need to quickly open the lid and have a meal.

[0003] Therefore, in view of the technical problem that the pressure relief time of the traditional electric pressure cooker is too long and the lid cannot be quickly opened, in the prior art, the purpose of reducing the pressure relief time is mainly achieved by accelerating the cooling of the inner pot. In order to achieve the effect of accelerating the cooling of the inner pot, a pressure cooker provided in the prior art is provided with an electric hot plate at the bottom of the inner pot, a wind collecting cover is arranged below the electric hot plate, a blower is arranged below the wind collecting cover, and the wind collecting cover extends towards the side wall of the inner pot. When the blower is started, the air flow acts on the side wall position of the inner pot under the guidance of the wind collecting cover, thereby realizing the cooling operation of the inner pot.

[0004] The above structure can accelerate the cooling process of the inner pot and the food inside the inner pot. However, since the air flow generated by the blower mainly acts on the outer wall of the inner pot, and the interaction time between the air flow and the inner pot is short, the cooling effect is not obvious. At the same time, due to the existence of the wind collecting cover between the blower and the heat source, the utilization rate of the normal temperature air flow generated by the blower is low. Generally speaking, the cooling effect of the above structure setting method is not obvious enough, which in turn affects the pressure relief speed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the pressure cooker in the prior art uses the method of cooling the side wall of the inner liner, which has an adverse effect on the cooling and pressure relief effects.

[0006] For this purpose, the present invention provides a heat collection structure, including: a support plate; a plurality of heat dissipation bodies arranged on the support plate, the heat dissipation bodies are arranged in a circular matrix on the support plate, and the windward end of the heat dissipation body is arranged towards the center direction of the support plate.

[0007] In the heat collection structure provided by the present invention, the heat dissipation body includes: a water droplet part, and the water droplet part is arranged at the windward end of the heat dissipation body.

[0008] For the heat collection structure provided by the present invention, the heat dissipation body further includes: a converging portion connected to the water droplet portion, and the converging portions of several heat dissipation bodies are arranged towards the center direction of the support plate.

[0009] For the heat collection structure provided by the present invention, the heat dissipation body and the support plate are integrally forged and formed.

[0010] For the heat collection structure provided by the present invention, along the longitudinal axis direction of the heat dissipation body, the cross-sectional shape of the heat dissipation body is one or more of an ellipse and a rectangle.

[0011] For the heat collection structure provided by the present invention, the annular matrix includes several concentric heat dissipation body rings. Among them, the distance between two adjacent heat dissipation body rings is r, the support plate is circularly arranged, the radius of the support plate is R, the heat dissipation body ring includes several equally spaced heat dissipation bodies, and the linear distance between two adjacent heat dissipation bodies is L, where R - r = L, and 1.5 mm ≤ L ≤ 8.5 mm.

[0012] The present invention also provides a lid assembly, including: a pot lid with a second accommodation cavity provided inside; the heat collection structure provided by the present invention, which is arranged in the second accommodation cavity.

[0013] For the lid assembly provided by the present invention, it further includes: a wind guiding structure arranged above the heat collection structure, an air outlet is provided on the wind guiding structure, and the air outlet is correspondingly arranged with the support plate.

[0014] For the lid assembly provided by the present invention, it further includes: a fan assembly, a fan is provided inside the fan assembly, and the airflow generated by the fan is adapted to enter the wind guiding structure and be discharged through the air outlet.

[0015] The present invention also provides a pressure cooker, including: a pot body with a first accommodation cavity provided inside; a heating assembly arranged at the bottom position of the first accommodation cavity; an inner pot arranged above the heating assembly, and an inner liner is provided in the inner pot; it further includes: the lid assembly provided by the present invention, which is arranged on the pot body, the support plate of the lid assembly is arranged above the inner pot, and the fan assembly of the lid assembly is arranged on the outer wall of the pot body.

[0016] The technical solution of the present invention has the following advantages:

[0017] 1. The heat collection structure provided by the present invention includes a number of heat dissipation bodies, which are arranged in an annular matrix on the support plate, and the leeward ends of the heat dissipation bodies are arranged towards the center direction of the support plate. Through the arrangement of the heat dissipation bodies, a good heat collection effect can be achieved. When the heat collection structure is arranged above the inner liner, the air guiding structure can directly dissipate heat from the heat collection structure, thereby effectively dissipating heat from the inner liner and playing a role in rapid pressure relief. At the same time, due to the large area of the heat collection structure itself, it can cover the upper position of the entire inner liner. Therefore, compared with the prior art in which the air flow directly acts on the outer side wall of the inner liner, the technical solution of the present application can effectively increase the heat exchange area and heat exchange effect.

[0018] 2. In the heat collection structure provided by the present invention, the heat dissipation body and the support plate are integrally forged. The welding thermal resistance between the support plate and the heat dissipation body is eliminated, further increasing the heat exchange efficiency and shortening the cooling time.

[0019] 3. In the heat collection structure provided by the present invention, the heat dissipation body includes: a water droplet part, and the water droplet part is arranged at the windward end of the heat dissipation body.

[0020] According to the principle of fluid mechanics, the angle between the arc side of the water droplet-shaped structure and the incoming cooling air has a great influence on the heat exchange amount of the heat dissipation body. When the arc surface of the water droplet shape faces the cooling air head-on, the cooling air flow will smoothly flow through each surface of the fin. When the side of the water droplet shape faces the wind, the cooling air flow will be blocked to a great extent. Therefore, through the above arrangement, the effective contact area between the heat dissipation body itself and the cooling air is significantly increased, thereby effectively improving the heat exchange effect and further improving the cooling effect on the pressure cooker.

[0021] 4. In the heat collection structure provided by the present invention, the heat dissipation body includes a water droplet part and a converging part connected to the water droplet part.

[0022] Through the above arrangement, the entire heat dissipation body itself is streamlined, effectively increasing the heat exchange area while effectively reducing the wind resistance of the cooling air flow itself and enhancing the heat exchange capacity of the heat dissipation support plate.

[0023] 5. In the pressure cooker provided by the present invention, the pot body and the lid assembly are connected by a hinge shaft, and the part of the fan assembly corresponding to the hinge shaft is made of a flexible material.

[0024] Through the above arrangement, first, it can ensure that the air flow generated by the fan assembly can act on the heat collection structure for cooling operation; at the same time, by restricting the flexible material on the air guiding structure, it can ensure the normal opening of the lid itself. Also, when the lid assembly makes an opening movement, due to the existence of the flexible material, it can ensure the normal opening of the lid assembly without being affected by the fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 An exploded view of the pressure cooker provided by the present invention;

[0027] Figure 2 A schematic structural diagram of the pressure cooker provided by the present invention;

[0028] Figure 3 A schematic structural diagram of the cooker lid provided by the present invention;

[0029] Figure 4 A schematic connection diagram of the air guiding structure and the fan assembly provided by the present invention;

[0030] Figure 5 A schematic structural diagram of the heat collecting structure provided by the present invention;

[0031] Figure 6 A schematic structural diagram of the heat sink provided by the present invention;

[0032] Figure 7 Schematic diagrams of other shapes of the heat sink provided by the present invention;

[0033] Figure 8 A schematic structural diagram of the heat sink on the support plate provided by the present invention;

[0034] Figure 9 The heat exchange performance of the lid assembly provided by the present invention at different spacings.

[0035] Description of the reference numerals in the embodiments:

[0036] 1, cooker body; 2, heating assembly; 3, inner pot; 4, inner liner; 5, cooker lid; 501, exhaust valve; 502, handle; 6, heat collecting structure; 61, support plate; 62, heat sink; 7, air guiding structure; 71, air outlet; 8, fan assembly; 81, housing; 82, fan; 9, air duct connecting pipe; 10, controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] 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.

[0038] 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 accompanying 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.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined 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.

[0040] 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.

[0041] Embodiment 1

[0042] This embodiment provides a heat collection structure 6, as Figures 1 - 9 shown, including

[0043] a support plate 61;

[0044] a plurality of heat dissipation bodies 62, arranged on the support plate, the heat dissipation bodies 62 are arranged in a circular matrix on the support plate, and the windward end of the heat dissipation body 62 is arranged towards the center direction of the support plate.

[0045] Specifically, the support plate 61 is circular in shape, and a plurality of heat dissipation bodies 62 are arranged on the support plate 61. At the same time, the support plate itself can be supported by stainless steel material. At the same time, the windward end of the heat dissipation body 62 is the end towards the center direction of the support plate 61.

[0046] Meanwhile, the shape and material of the heat sink 62 itself are not limited, as long as it can transfer the heat on the support plate. In this embodiment, the heat sink 62 itself can be made of metal materials such as stainless steel and red copper. At the same time, the shape of the heat sink 62 is not restricted. It can be a regular shape or an irregular shape. When it is a regular shape, the heat sink 62 can be set in a cylindrical shape, or in a frustum shape, a conical shape, a rhombus shape, a hexagonal shape, or a date pit shape.

[0047] In this embodiment, the structure of the heat sink 62 itself is not limited, such as Figure 7 shown in a, b, c, d, it can be set in a variety of different structures. In this embodiment, the heat sink 62 includes: a water droplet part, and the water droplet part is arranged at the windward end of the heat sink 62. Specifically, the longitudinal section of the water droplet part itself is arranged in a water droplet shape.

[0048] Specifically, as Figure 6 shown, one end of the cross-section of the heat sink 62 along the longitudinal axis is arranged in a water droplet shape. According to the principle of fluid mechanics, the angle between the arc side of the water droplet-shaped structure and the incoming cooling air has a great influence on the heat exchange amount of the fins. When the circular arc surface of the water droplet shape faces the cooling air head-on, the cooling air flow will smoothly flow through each surface of the fins. When the side of the water droplet shape faces the wind, the cooling air flow will be blocked to a great extent. Therefore, through the above setting method, the effective contact area between the heat sink 62 itself and the cooling air is significantly increased, thereby effectively improving the heat exchange effect, and further improving the cooling effect on the pressure cooker.

[0049] Furthermore, in this embodiment, the heat sink 62 further includes: a converging part connected to the water droplet part, and the converging parts of several heat sinks 62 are arranged towards the center direction of the support plate.

[0050] As Figure 8 shown, the support plate 61 is divided into four different regions I, II, III, and IV. It can be seen that the heat sinks 62 in each region are all arranged towards the center direction of the support plate 61.

[0051] By connecting the converging part to the water droplet part, through the above setting method, the entire heat sink 62 itself is arranged in a streamline shape, effectively increasing the heat exchange area while effectively reducing the wind resistance of the cooling air flow itself, and improving the heat exchange capacity of the heat dissipation support plate.

[0052] Specifically, the shape of the converging part itself is not limited, and the shape of the converging part gradually decreases. It can be set in a frustum shape. In this embodiment, as Figure 6As shown, the converging part is conical, and correspondingly, the cross-sectional shape of the converging part itself will be triangular. Specifically, the diameter of the water droplet part and the side length of the equilateral triangle are 4 mm - 16 mm, and at the same time, the height of the water droplet part is 5 mm - 25 mm, so that a better pressure relief speed can be obtained.

[0053] Furthermore, as Figure 5 and Figure 8 shown, in this embodiment, the converging parts of several of the heat dissipating bodies 62 are arranged towards the center direction of the support plate. Specifically, as Figure 8 shown, the heat dissipating body 62 is divided into four mutually independent regions Ⅰ, Ⅱ, Ⅲ, and Ⅳ, and the converging parts of the heat dissipating bodies 62 in each region are all arranged towards the center direction of the coil.

[0054] For the heat collection structure provided in this embodiment, the connection method between the heat dissipating body 62 and the support plate 61 is not limited. The heat dissipating body 62 and the support plate can be processed separately, such as realizing the connection between the heat dissipating body 62 and the support plate by welding, or connection holes can be provided on the support plate, and the heat dissipating body 62 is connected by stamping. In this embodiment, the heat dissipating body 62 and the support plate are integrally cast. This setting method can eliminate the welding thermal resistance between the support plate and the heat dissipating body 62, further increase the heat exchange efficiency, and shorten the cooling time.

[0055] In this embodiment, the arrangement method of multiple heat dissipating bodies 62 is not limited. The multiple heat dissipating bodies 62 can be regularly arranged or irregularly arranged, as long as stable heat transfer can be achieved. As Figure 5 shown, in this embodiment, the heat dissipating bodies 62 are arranged in a circular matrix on the support plate. Specifically, the heat dissipating bodies 62 are arranged as a plurality of concentric circular structures. Through the above setting method, the space of the support plate itself can be effectively utilized.

[0056] Furthermore, the circular matrix includes a plurality of concentric heat dissipating body rings. Among them, the distance between two adjacent heat dissipating body rings is r, the support plate is circularly arranged, and the radius of the support plate is R. In this embodiment, R - r = L, and at the same time, 1.5 mm ≤ L ≤ 8.5 mm. That is, the distance between two adjacent heat dissipating body rings is equal to the distance between two adjacent heat dissipating bodies on each heat dissipating body ring. Through the above setting method, through Figure 9As can be seen from the content recorded, the ratio of the actual heat exchange amount to the target required heat exchange amount increases with the decrease of L. However, according to the feasibility of process processing, currently the minimum value of L is 1.5 mm, and the optimal heat exchange effect can be obtained. When L is less than 1.5 mm, the processing difficulty of the heat dissipation body ring will increase significantly. When L is greater than 1.5 mm, the heat exchange amount will gradually decrease. Considering comprehensively, until the value of L increases to 8.5 mm, the ratio of the actual heat exchange amount to the target required heat exchange amount will drop to 20%, resulting in a low heat exchange efficiency. Therefore, in this embodiment, 1.5 mm ≤ L ≤ 8.5 mm is restricted.

[0057] Embodiment 2

[0058] This embodiment provides a lid assembly, including: a pot lid 5 with a second accommodation cavity provided inside; the heat collection structure 6 provided in Embodiment 1, which is arranged in the second accommodation cavity.

[0059] In this embodiment, as Figure 3 shown, an exhaust valve 501 is provided on the pot lid 5 and a handle 502 is provided on one side of the exhaust valve 501. After the cooking action is completed, the user can drive the handle 502 to open the exhaust valve 501 to relieve the pressure of the pressure cooker.

[0060] The lid assembly provided in Embodiment 1 further includes: a wind guiding structure 7 arranged above the heat collection structure 6. An air outlet 71 is provided on the wind guiding structure 7, and the air outlet is correspondingly arranged with the support plate.

[0061] Specifically, the specific structure of the wind guiding structure 7 is not limited as long as it can realize the ventilation operation of the heat collection structure 6 itself. By arranging the wind guiding structure 7, the external air flow can be introduced to the position of the heat collection structure 6, and then the heat collection structure 6 can be cooled.

[0062] Furthermore, the air outlet of the wind guiding structure 7 acts on the outer circumferential part of the heat collection structure 6. At this time, the air flowing out through the wind guiding structure 7 will flow from the outer diameter part of the heat collection structure 6 to the inner diameter part, so as to play a role in accelerating heat exchange. Specifically, in order to realize this operation, a wind shield is provided at the air outlet part of the wind guiding structure 7, and the outer edge of the wind shield extends to the outer diameter part of the heat collection structure 6.

[0063] As another implementation manner, the air outlet of the wind guiding structure 7 is correspondingly arranged with the outer edge part of the heat collection structure 6, so that the cold air flowing out from the wind guiding structure 7 directly acts on the outer edge position of the heat collection structure 6. Specifically, the air outlet can be set to be multiple, and at the same time, the multiple air outlets can be arranged in a ring shape.

[0064] The lid assembly provided in this embodiment further includes: a fan assembly 8. A fan 82 is provided inside the fan assembly 8, and the airflow generated by the fan 82 is adapted to enter the air guiding structure 7 and be discharged through the air outlet 71.

[0065] Specifically, the heat collecting structure 6 can directly absorb the heat of the inner pot 4 and the high-temperature food materials in the inner pot 4. The air guiding assembly is arranged above the heat collecting structure 6, and the air outlet 71 of the air guiding assembly is correspondingly arranged at a position relative to the heat collecting structure 6. A fan assembly 8 is arranged in the air guiding assembly. After the fan assembly 8 is started, an air current will be formed in the air duct and flow out at the position of the air outlet 71 and act on the heat collecting structure 6. Through the heat collecting structure 6, since it is arranged above the inner pot 4, it can play a good heat collecting role. At the same time, by arranging the air guiding structure 7, the air guiding structure 7 can directly dissipate heat from the heat collecting structure 6, so that the inner pot 4 can be effectively cooled, and then the function of rapid pressure relief can be achieved. At the same time, since the heat collecting structure 6 has a relatively large area itself, it can cover the entire upper position of the inner pot 4. Therefore, compared with the prior art in which the air current directly acts on the outer side wall of the inner pot 4, the technical solution of the present application can effectively increase the heat exchange area and heat exchange effect.

[0066] Embodiment 3

[0067] This embodiment provides a pressure cooker, as Figure 1 shown, including: a cooker body 1, with a first accommodation cavity provided inside;

[0068] A heating assembly 2, arranged at the bottom position of the first accommodation cavity;

[0069] In this embodiment, the structure of the heating assembly 2 itself is not limited, as long as it can achieve the heating action. In this embodiment, as an implementation manner, the heating assembly itself is arranged in the form of a winding disc and a magnetic strip.

[0070] An inner pot 3, arranged above the heating assembly 2, and an inner liner 4 is arranged in the inner pot 3;

[0071] Specifically, the heating assembly 2 is arranged below the inner pot 3, and the inner liner 4 is arranged above the heating assembly 2. The food materials to be heated are placed in the inner liner 4. After the heating assembly 2 is started, the inner liner 4 generates heat under the action of electromagnetic induction, so as to realize the cooking of the food materials. At the same time, in order to control the start and stop of the heating assembly 2, as well as the heating power and heating mode, a controller 10 is further arranged. The controller 10 is communicatively connected to the sensors or buttons inside the pot body, so as to realize the precise control of the heating assembly 2.

[0072] Further included are: the lid assembly provided in Embodiment 2, which is arranged on the pot body 1. The support plate of the lid assembly is arranged above the inner pot 3, and a blower assembly is arranged on the lid assembly. The blower assembly 8 is arranged on the outer wall of the pot body 1.

[0073] For the pressure cooker provided in this embodiment, the blower assembly 8 includes a housing 81, which is connected to the outer wall of the pot body 1. A blower accommodation cavity is arranged inside the blower assembly 8, and the air guiding structure is communicated with the housing 81.

[0074] As an implementation manner, the blower assembly 8 can be connected to the air guiding structure 7 in a horizontal or inclined state. At this time, the air guiding structure 7 will extend towards the outside of the pressure cooker, and at this time, the blower assembly 8 itself will form a structure similar to being suspended.

[0075] As another implementation manner, as Figure 1 and Figure 2 shown, the blower assembly 8 itself is connected to the pot body 1. Specifically, the blower assembly 8 includes a housing 81, which is connected to the outer wall of the pot body 1. A blower accommodation cavity is arranged inside the blower assembly 8.

[0076] For the pressure cooker provided in this embodiment, the pot body and the lid assembly are connected by a hinge shaft, and the part of the blower assembly 8 corresponding to the hinge shaft is made of a flexible material. Specifically, as Figure 4 shown, an air duct connecting pipe 9 is arranged on the blower assembly 8. The air duct connecting pipe itself can be made of materials such as rubber. When the lid assembly is opened relative to the pot body, the air duct connecting pipe 9 itself will also bend, so as to ensure the stable transmission of the air flow inside the blower assembly 8 while avoiding adverse effects on the normal opening of the lid assembly due to the presence of the blower assembly 8.

[0077] Through the test of the pressure cooker provided in this embodiment, under the working conditions of 105 kPa and boiling 3.2 L of water, the pressure relief time reaches 7.7 minutes. At present, the pressure relief time of most pressure cookers in the prior art is about 30 minutes. Therefore, through the structure provided in this embodiment, the waiting time of users after cooking can be greatly shortened.

[0078] Obviously, the above embodiments are only examples clearly described and not 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 are still within the protection scope of the present invention.

Claims

1. A heat collection structure (6), characterized in that, Comprising: Support plate; A plurality of heat dissipation bodies (62), arranged on the support plate, the heat dissipation bodies (62) are arranged in an annular matrix on the support plate, and the windward end of the heat dissipation body (62) is arranged towards the center direction of the support plate; The annular matrix includes a plurality of concentric heat dissipation body rings. Among them, the distance between two adjacent heat dissipation body rings is r, the support plate is circularly arranged, the radius of the support plate is R, the heat dissipation body ring includes a plurality of equidistantly arranged heat dissipation bodies, and the linear distance between two adjacent heat dissipation bodies is L, where R - r = L, and 1.5 mm ≤ L ≤ 8.5 mm.

2. The heat collection structure according to claim 1, characterized in that, The heat dissipation body (62) includes: a water droplet part, and the water droplet part is arranged at the windward end of the heat dissipation body (62).

3. The heat collection structure according to claim 2, characterized in that, The heat dissipation body (62) further includes: a converging part connected to the water droplet part, and the converging parts of a plurality of the heat dissipation bodies (62) are arranged towards the center direction of the support plate.

4. The heat collection structure according to any one of claims 1 - 3, characterized in that, The heat dissipation body (62) and the support plate are integrally forged.

5. The heat collection structure according to claim 1, characterized in that, Along the longitudinal axis direction of the heat dissipation body, the cross-sectional shape of the heat dissipation body is one or more of an ellipse and a rectangle.

6. A cover assembly, characterized in that, Comprising: A pot lid (5) with a second accommodation cavity arranged inside; The heat collection structure (6) according to any one of claims 1 - 5, arranged in the second accommodation cavity.

7. The cover assembly according to claim 6, characterized in that, Further comprising: A wind guiding structure (7), arranged above the heat collection structure (6), an air outlet (71) is arranged on the wind guiding structure (7), and the air outlet is correspondingly arranged with the support plate.

8. The cover assembly according to claim 7, characterized in that, Further comprising: a fan assembly (8), a fan (82) is arranged inside the fan assembly (8), and the airflow generated by the fan (82) is adapted to enter the wind guiding structure (7) and be discharged through the air outlet (71).

9. A pressure cooker, comprising: A pot body (1) with a first accommodation cavity arranged inside; A heating assembly (2), arranged at the bottom position of the first accommodation cavity; An inner pot (3), arranged above the heating assembly (2), and an inner liner (4) is arranged in the inner pot (3); It is characterized in that it further comprises: The lid assembly according to any one of claims 6 - 8, arranged on the pot body (1), the support plate of the lid assembly is arranged above the inner pot (3), and a fan assembly is arranged on the lid assembly, and the fan assembly (8) is arranged on the outer wall of the pot body (1).

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