A cooking device

Abstract

The cooking device provided by the present invention comprises: a shell, on which at least one air inlet and at least one air outlet are arranged, and a receiving cavity is arranged inside the shell; a support member, which acts on the opening position of the receiving cavity; a radiator, which is arranged between the support member and the inner wall of the shell; a heat-conducting structure, which is arranged between the radiator and the support member and has an expansion state with a low thermal conductivity coefficient and a compression state with a high thermal conductivity coefficient; a lifting device, which acts on the radiator and is suitable for adjusting the distance between the radiator and the support member, and is suitable for controlling the heat-conducting structure to switch between the expansion state and the compression state. By controlling the switching of the heat-conducting structure between the expansion state and the compression state through the lifting device, and then controlling the thermal conductivity of the heat-conducting structure to the receiving cavity, the heat dissipation and heat insulation of the receiving cavity can be flexibly adjusted as needed, which solves the defect that the pressure-reducing cooling structure such as the radiator reduces the heating efficiency in the receiving cavity.

Description

Technical Field

[0001] The invention relates to the technical field of household kitchenware, and in particular to a cooking device. Background Art

[0002] Now, in daily life, food stewed under higher pressure is in a sealed state, the nutrients are not easily lost, the taste is better, and the cooking speed is also faster, generally one-third of that of normal pressure cooking, so it is popular among consumers.

[0003] As a common cooking device, electric pressure cookers apply high pressure inside the pot to raise the boiling point of water to over 100°C, thereby cooking food quickly. However, when the electric pressure cooker finishes cooking, the lid cannot be opened in time due to the excessive pressure inside the pot, which brings great inconvenience to users.

[0004] In order to solve the technical problem that traditional electric pressure cookers cannot open their lids quickly, technicians added a radiator and a fan to the lid to cool the pot body during the research and development process, so that the temperature of the pot body can be reduced to reduce the pressure inside the pot. Although the above method can achieve the purpose of pressure relief to a certain extent, since the radiator and other structures are usually made of metal, when the electric pressure cooker is cooking normally, the heat will be continuously transferred to the radiator and part of the heat will be dissipated through natural convection, which greatly reduces the thermal efficiency of the electric pressure cooker and thus affects the normal cooking of the ingredients. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the prior art that the pressure reduction cooling structure reduces the thermal efficiency of the electric pressure cooker, thereby providing a cooking device.

[0006] The present invention provides a cooking device, comprising: a housing provided with at least one air inlet and at least one air outlet, wherein a receiving cavity is provided inside the housing;

[0007] A support member, acting on the opening position of the accommodating cavity;

[0008] A radiator, disposed between the support member and the inner wall of the housing;

[0009] A heat-conducting structure, disposed between the heat sink and the support member, having an expanded state with a low thermal conductivity and a compressed state with a high thermal conductivity;

[0010] The lifting device acts on the heat sink and is suitable for adjusting the distance between the heat sink and the support member, and is suitable for controlling the heat-conducting structure to switch between an expanded state and a compressed state.

[0011] One end of the lifting device acts on the radiator, and the other end of the lifting device acts on the shell.

[0012] The lifting device is a cylinder.

[0013] The shell comprises: a barrel body and a cover body arranged on the barrel body.

[0014] The air inlet and the air outlet are respectively arranged on the cover body.

[0015] The cooking device also includes an inner pot, which is arranged on the inner side of the shell. The inner pot is provided with an inlet arranged upward, and the support member is arranged at the position of the inlet.

[0016] The plurality of air outlets are evenly distributed on the cover body, and each of the air outlets is correspondingly provided with a blade and a rotating shaft, the rotating shaft passes through the blade, and the blade is suitable for rotating along the rotating shaft in the air outlet and has a closed position for covering the air outlet.

[0017] The cooking device further comprises: a power member, which is arranged in the accommodating cavity and is suitable for pushing the gas in the accommodating cavity to flow from the air inlet to the air outlet.

[0018] The radiator is arranged in a ring shape, the power part is arranged in the middle, and the radiator includes a plurality of radiating fins arranged in a radial shape.

[0019] The technical solution of the present invention has the following advantages:

[0020] 1. The cooking device provided by the present invention comprises: a shell body, on which at least one air inlet and at least one air outlet are arranged, and a accommodating cavity is arranged inside the shell body; a support member, which acts on the opening position of the accommodating cavity; a radiator, which is arranged between the support member and the inner wall of the shell body; a heat-conducting structure, which is arranged between the radiator and the support member and has an expanded state with a low thermal conductivity coefficient and a compressed state with a high thermal conductivity coefficient; a lifting device, which acts on the radiator and is suitable for adjusting the distance between the radiator and the support member, and is suitable for controlling the conversion of the heat-conducting structure between the expanded state and the compressed state.

[0021] The distance between the radiator and the support is adjusted by the lifting device. Since the heat-conducting structure is arranged between the radiator and the support, the lifting device can control the conversion of the heat-conducting structure between the expansion state and the compression state. In this way, during the heating process of the accommodating cavity, the lifting device adjusts the distance between the radiator and the support to be larger, ensuring that the heat-conducting structure is in an expansion state, with a low thermal conductivity and poor heat transfer efficiency. The heat in the accommodating cavity is reduced from the opening direction, so that the accommodating cavity can be fully heated. After the accommodating cavity is heated, the lifting device adjusts the distance between the radiator and the support to reduce the distance, so that the heat-conducting structure becomes compressed, the thermal conductivity becomes larger, and the thermal conductivity efficiency is improved, so that the heat in the accommodating cavity can be conducted to the outside through the support, the heat-conducting structure and the radiator from the air outlet, thereby reducing the pressure in the accommodating cavity. In this way, by controlling the thermal conductivity of the heat-conducting structure to the accommodating cavity, the heat dissipation and heat insulation of the accommodating cavity can be flexibly adjusted according to needs, thereby solving the defect that the step-down cooling structure such as the radiator reduces the heating efficiency in the accommodating cavity.

[0022] 2. The cooking device provided by the present invention has multiple air outlets evenly distributed on the cover body, and each of the air outlets is correspondingly provided with a blade and a rotating shaft, the rotating shaft passes through the blade, and the blade is suitable for rotating along the rotating shaft in the air outlet and has a closed position for covering the air outlet.

[0023] By arranging blades and a rotating shaft at the air outlet, the blocking or opening of the air outlet can be adjusted by controlling the rotation of the blades. When the accommodating cavity is heated, the blades rotate along the rotating shaft to a position that blocks the air outlet, thereby preventing the heat in the accommodating cavity from flowing out, thereby improving the thermal efficiency of the heating of the accommodating cavity. When the accommodating cavity needs to be depressurized and cooled, the blades rotate to a position perpendicular to the air outlet, thereby preventing the airflow out of the air outlet from being obstructed, so that the heat in the accommodating cavity can be smoothly discharged, thereby ensuring the efficiency of depressurization and cooling of the accommodating cavity.

[0024] 3. In the cooking device provided by the present invention, the radiator is arranged in a ring shape, the power part is arranged in the middle, and the radiator includes a plurality of radiating fins arranged in a radial shape.

[0025] Since the radiator is adjacent to the heat-conducting structure, during the process of depressurizing and cooling the accommodating cavity, the heat in the accommodating cavity is transferred from the supporting member to the heat-conducting structure, and the radiator receives the heat conducted by the heat-conducting structure in a compressed state. On the one hand, such an arrangement can quickly dissipate heat to various circumferential positions through the radially arranged heat sinks. On the other hand, the power component is arranged in the middle of the radiator, which can guide the airflow flowing in at the air inlet to the position of the power component and lead it out from the air outlet after passing through the heat sink, thereby improving the heat dissipation efficiency of the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 An exploded schematic diagram of a cooking device provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic cross-sectional view of the cooking device shown in FIG. 1 with the heat conducting mechanism in a compressed state;

[0029] Figure 3 for Figure 2 A cross-sectional schematic diagram of the cooking device shown in FIG. 1 with the heat conducting mechanism in an expanded state;

[0030] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the lifting device of the cooking device shown;

[0031] Description of reference numerals:

[0032] 1-accommodating chamber; 2-power part; 3-radiator; 4-lifting device; 5-heat-conducting structure; 11-cover; 12-supporting part; 111-air inlet; 112-air outlet; 31-heat sink. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1 - Figure 4 The present embodiment provides a cooking device, comprising a shell, a support member 12, a radiator 3, a heat-conducting structure 5 and a lifting device 4. The shell is provided with an air inlet 111 and a plurality of air outlets 112, and a housing cavity 1 is provided inside the shell; the support member 12 acts on the opening position of the housing cavity 1; the radiator 3 is arranged between the support member 12 and the inner wall of the shell; the heat-conducting structure 5 is arranged between the radiator 3 and the support member 12, and has an expansion state with a low thermal conductivity coefficient and a compression state with a high thermal conductivity coefficient; the lifting device 4 acts on the radiator 3 and is suitable for adjusting the distance between the radiator 3 and the support member 12, and is suitable for controlling the heat-conducting structure 5 to switch between the expansion state and the compression state.

[0038] An air inlet 111 and an air outlet 112 are arranged on the shell with the accommodating chamber 1, so that the accommodating chamber 1 can effectively exchange heat with the outside of the shell, thereby increasing the heat dissipation in the accommodating chamber 1; the arrangement of the support member 12 allows the accommodating chamber 1 to avoid contact with external impurities while dissipating heat, thereby achieving effective isolation of pollutants and controlling the opening and closing of the accommodating chamber 1; the arrangement of the radiator 3 can transfer the heat from the support member 12 to the air flow in the accommodating chamber 1, thereby achieving efficient heat exchange, and after the air flow in the accommodating chamber 1 flows out of the air outlet 112, the process of reducing pressure and cooling after heating is completed.

[0039] The distance between the radiator 3 and the support 12 is adjusted by the lifting device 4. Since the heat-conducting structure 5 is arranged between the radiator 3 and the support 12, the lifting device 4 can control the conversion of the heat-conducting structure 5 between the expansion state and the compression state. In this way, during the heating process of the accommodating chamber 1, the lifting device 4 adjusts the distance between the radiator 3 and the support 12 to be larger, ensuring that the heat-conducting structure 5 is in an expansion state, with a low thermal conductivity and poor heat transfer efficiency. The heat in the accommodating chamber 1 is reduced from the opening direction, so that the accommodating chamber 1 can be fully heated. After the accommodating chamber 1 is heated, the lifting device 4 adjusts the distance between the radiator 3 and the support 12 to be reduced, so that the heat-conducting structure 5 changes to a compression state, the thermal conductivity becomes larger, and the heat transfer efficiency is improved, so that the heat in the accommodating chamber 1 can be transmitted to the outside through the support 12, the heat-conducting structure 5 and the radiator 3, and the air outlet 112, thereby reducing the pressure in the accommodating chamber 1. This arrangement controls the thermal conductivity of the heat-conducting structure 5 to the accommodating cavity 1, and then flexibly adjusts the heat dissipation and heat insulation of the accommodating cavity 1 as needed, thereby solving the defect that the pressure-reducing cooling structure such as the radiator 3 reduces the heating thermal efficiency in the accommodating cavity 1.

[0040] In this embodiment, the material of the heat-conducting structure 5 is reduced graphene oxide foam material, namely rGO (Reduced Graphene Oxide) foam material. Studies have found that it has an expanded state with low thermal conductivity and a compressed state with high thermal conductivity.

[0041] like Figure 1 As shown, in this embodiment, the cooking device is an electric pressure cooker, and the shell is cylindrical, and the shell includes a barrel and a cover 11 arranged on the barrel. The air inlet 111 and the air outlet 112 are both arranged on the cover 11. The accommodating cavity 1 of the cooking device is an inner pot, and the internal heating is used to cook food. The inner pot is provided with an upwardly arranged inlet, and the support member 12 is arranged at the inlet position. In this embodiment, the support member 12 is fixedly connected to the cover 11 and abuts against the opening of the inner pot. As a convertible embodiment, the support member 12 can be detachably engaged with the opening of the inner pot and is not connected to the cover 11.

[0042] An air inlet 111 is provided at the top of the cover body 11, and a plurality of air outlets 112 are evenly provided along the circumference of the cover body 11. The air inlet 111 is a rectangular hole arranged in the vertical direction. A blade and a rotating shaft are correspondingly provided on each air outlet 112. The rotating shaft passes through the middle of the blade. The blade rotates along the rotating shaft in the air outlet 112 and has a closed position to cover the air outlet 112. In this embodiment, the blade is a rectangular piece, and the air outlet 112 is completely covered in the closed position.

[0043] By arranging blades and a rotating shaft at the air outlet 112, the blocking or opening of the air outlet 112 can be adjusted by controlling the rotation of the blades. When the accommodating chamber 1 is heated, the blades rotate along the rotating shaft to a position that blocks the air outlet 112, thereby preventing the heat in the accommodating chamber 1 from flowing out, thereby improving the thermal efficiency of the heating of the accommodating chamber 1. When the accommodating chamber 1 needs to be depressurized and cooled, the blades rotate to a position perpendicular to the air outlet 112, thereby preventing the airflow out of the air outlet 112 from being obstructed, thereby allowing the heat in the accommodating chamber 1 to be smoothly discharged, thereby ensuring the depressurization and cooling efficiency of the accommodating chamber 1.

[0044] In this embodiment, the cooking device has a built-in controller, which is electrically connected to the power part 2 inside the radiator 3, the lifting device 4 and the linkage structure for controlling the rotation of the blades arranged at the air inlet 111, so as to control the switch of the power part 2, the start and stop of the lifting device 4 and the rotation angle of the blades.

[0045] like Figure 4 The lifting device 4 is a cylinder with a base tube and a lifting rod moving in the inner cavity of the base tube opening. The outer end of the lifting rod is connected and fixed to the top surface inside the shell, and the bottom end of the base tube is fixedly connected to the radiator 3.

[0046] As a convertible embodiment, the lifting device 4 can also act on the support member 12, with one end connected and fixed to the inner top surface of the shell, and the other end fixedly connected to the top of the support member 12. At the same time, during the lifting process of the support member 12, the support member 12 is kept in contact with the opening of the inner pot, and the radiator 3 is fixedly connected to the inner wall of the shell.

[0047] In this embodiment, the cooking device further includes a power component 2 disposed in the accommodating cavity 1 and adapted to push the gas in the accommodating cavity 1 to flow from the air inlet 111 to the air outlet 112 .

[0048] The radiator 3 is arranged in an annular shape, including a plurality of radially arranged heat sinks 31. The power part 2 is arranged in the middle of the radiator 3. The arrangement of the power part 2 causes the gas in the accommodating chamber 1 to flow, and the airflow flows from the air inlet 111 to the air outlet 112, so that part of the heat in the accommodating chamber 1 can be taken out of the shell by the airflow, thereby achieving the cooling and pressure reduction of the accommodating chamber 1 after heating. In this embodiment, the power part 2 is a centrifugal fan. There is no restriction on the location of the power part 2, and it can be arranged at any part of the accommodating chamber 1 to promote the internal air flow.

[0049] Since the radiator 3 is arranged adjacent to the heat-conducting structure 5, during the process of depressurizing and cooling the accommodating chamber 1, the heat in the accommodating chamber 1 is transferred from the supporting member 12 to the heat-conducting structure 5, and the radiator 3 receives the heat conducted from the heat-conducting structure 5 in a compressed state. This arrangement can, on the one hand, quickly dissipate heat to various circumferential positions through the radially arranged heat sinks 31, and on the other hand, the power component 2 is arranged in the middle of the radiator 3, which can guide the airflow flowing in at the air inlet 111 to the position of the power component 2, and then lead it out from the air outlet 112 after passing through the heat sink 31, thereby improving the heat dissipation efficiency of the heat sink 31.

[0050] The specific form of the cooking device is not limited. In the present embodiment, the cooking device is an electric pressure cooker. As a convertible embodiment, the cooking device can also be a pressure cooker, an electric rice cooker, a steamer, a soup pot, etc.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled 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 methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A cooking device, characterized in that: include: A housing is provided with at least one air inlet (111) and at least one air outlet (112), and a receiving chamber (1) is provided inside the housing; A support member (12) acting on the opening position of the accommodating cavity (1); A radiator (3) is arranged between the support member (12) and the inner wall of the shell; A heat-conducting structure (5) is arranged between the heat sink (3) and the support member (12), and has an expanded state with a low thermal conductivity and a compressed state with a high thermal conductivity; A lifting device (4) acts on the heat sink (3) and is suitable for adjusting the distance between the heat sink (3) and the support member (12), and is suitable for controlling the heat-conducting structure (5) to switch between an expanded state and a compressed state.

2. The cooking device according to claim 1, characterized in that: One end of the lifting device (4) acts on the radiator (3), and the other end of the lifting device (4) acts on the shell.

3. The cooking device according to claim 1, characterized in that: The lifting device (4) is a cylinder.

4. The cooking device according to claim 1, characterized in that: The housing comprises: A barrel body, and a cover body (11) arranged on the barrel body.

5. The cooking device according to claim 4, characterized in that: The air inlet (111) and the air outlet (112) are respectively arranged on the cover body (11).

6. The cooking device according to claim 5, characterized in that: It also comprises an inner pot, which is arranged inside the shell, and the inner pot is provided with an inlet arranged upward, and the support member (12) is arranged at the position of the inlet.

7. The cooking device according to any one of claims 4 to 6, characterized in that: The plurality of air outlets (112) are evenly distributed on the cover body (11), and each of the air outlets (112) is correspondingly provided with a blade and a rotating shaft, the rotating shaft passes through the blade, and the blade is suitable for rotating along the rotating shaft in the air outlet (112) and has a closed position for covering the air outlet (112).

8. The cooking device according to any one of claims 1 to 6, characterized in that: Also includes: The power component (2) is arranged in the accommodating chamber (1) and is suitable for pushing the gas in the accommodating chamber (1) to flow from the air inlet (111) to the air outlet (112).

9. The cooking device according to claim 8, characterized in that: The radiator (3) is arranged in a ring shape, with the power part (2) arranged in the middle, and the radiator (3) comprises a plurality of radiating fins (31) arranged in a radial shape.

10. The cooking device according to claim 9, characterized in that: The cooking device is an electric pressure cooker.

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