Cooking equipment

Abstract

The cooking equipment comprises a shell, an upper cover and a bottom shell, a first cavity and a second cavity are formed in the upper cover, a heat insulation cavity is formed in the bottom shell, and a cooking cavity is defined by the upper cover and the bottom shell; the circuit board is mounted in the first cavity; the fan is electrically connected with the circuit board; the upper cover is provided with a first air inlet and an air outlet. Due to the fact that the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel are arranged, cold air enters the first heat dissipation channel and the second heat dissipation channel from the upper cover and the bottom shell respectively, and the two paths of cold air conduct heat dissipation on components such as a circuit board in the first heat dissipation channel and are finally discharged from the third heat dissipation channel; the first heat dissipation channel and the second heat dissipation channel achieve introduction and heat dissipation of two paths of cold air, the inlet amount of the cold air can be increased, the two paths of cold air are introduced from different directions, the contact area between the two paths of cold air and elements such as a circuit board can be increased, then the heat dissipation efficiency is improved, and the heat dissipation requirement of the cooking equipment is met.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a cooking device. Background Technology

[0002] Air fryers are common household appliances with circuit boards and other components on their inner walls. Because the internal temperature of an air fryer is high during cooking, heat dissipation is needed for these components to ensure their normal operation.

[0003] Current air fryers have a single heat dissipation channel, which cannot meet the heat dissipation requirements of high-temperature air fryers. Utility Model Content

[0004] This utility model relates to a cooking device with a newly designed heat dissipation channel to solve the problem of the large size of the top cover.

[0005] In one embodiment, a cooking device is provided, comprising:

[0006] The housing includes an upper cover and a lower cover. The upper cover has a first cavity and a second cavity. The upper cover and / or the lower cover has a heat insulation cavity. The upper cover and the lower cover form a cooking cavity.

[0007] Circuit board, installed in the first cavity; and

[0008] A fan electrically connected to the circuit board, the fan including a first blade and a second blade, the first blade being located in the second cavity and the second blade being located in the cooking cavity;

[0009] The upper cover is provided with a first air inlet and an air outlet. The first air inlet is connected to the first cavity, and a first heat dissipation channel is formed inside the first cavity. The bottom shell or the bottom of the upper cover is provided with a second air inlet, which is connected to the heat insulation cavity. The heat insulation cavity is connected to the first cavity, and a second heat dissipation channel is formed inside the heat insulation cavity. The first cavity is connected to the second cavity, and the second cavity is connected to the air outlet. A third heat dissipation channel is formed inside the second cavity, and the third heat dissipation channel is connected to the first heat dissipation channel. The air outlet is also connected to the cooking cavity.

[0010] In one embodiment, the first air inlet is disposed on the side of the upper cover, and the air outlet is disposed on the side or top of the upper cover; alternatively, the air outlet is disposed on the bottom or side of the bottom shell. The first blade is disposed at the first heat dissipation channel, the third heat dissipation channel, or the connection between the first heat dissipation channel and the third heat dissipation channel. During heat dissipation, a first stream of air enters the first heat dissipation channel from the first air inlet on the top or side of the upper cover, and a second stream of air enters the second heat dissipation channel from the second air inlet on the bottom or side of the bottom shell, and then enters the first heat dissipation channel. The first blade is used to drive the first and second streams of air to converge into the third heat dissipation channel and be discharged from the air outlet.

[0011] In one embodiment, the first air inlet and air outlet are located within the same circumference or the same annular ring of the upper cover.

[0012] In one embodiment, the first air inlet and air outlet are arranged side by side.

[0013] In one embodiment, the upper cover is provided with two first air inlets and one air outlet, one first air inlet being located on one side of the air outlet and the other first air inlet being located on the other side of the air outlet.

[0014] In one embodiment, the upper cover is provided with a first inner cover and a second inner cover, the first inner cover and the upper cover forming a first cavity, and the first inner cover and the second inner cover forming a second cavity; the bottom shell is provided with a third inner cover, the bottom shell and the third inner cover forming a heat insulation cavity, and the second inner cover and the third inner cover forming a cooking cavity.

[0015] In one embodiment, the top cover, the first inner cover, and the second inner cover are dome structures, with the first cavity surrounding the top and all sides of the second cavity.

[0016] In one embodiment, the first inner cover has a first opening and a second opening, the first opening is connected to the second cavity and is aligned and connected to the air outlet; the second inner cover has a third opening, the third opening is connected to the cooking cavity, and the third opening, the second opening and the air outlet are aligned and connected in sequence.

[0017] In one embodiment, a first partition plate is provided between the first opening and the second opening and the first air inlet; and / or, a second partition plate is provided between the first opening and the second opening.

[0018] In one embodiment, the first opening is disposed side by side above the second opening.

[0019] In one embodiment, the first air inlet is provided with one or more first guide vanes, and the air outlet is provided with one or more second guide vanes. The first guide vanes and the second guide vanes have different inclination directions so that the flow direction of the cold air entering the first air inlet does not intersect with the flow direction of the hot air exiting the air outlet.

[0020] In one embodiment, the first guide vane is inclined downward to guide cold air below the first air inlet into the first air inlet; and / or, the second guide vane is inclined upward to guide hot air discharged from the air outlet upward.

[0021] In one embodiment, a support is provided inside the cooking cavity for placing food, a first heating element is provided above the support, and a second heating element is provided below the support.

[0022] According to the cooking device of the above embodiment, since the cooking device is provided with a first heat dissipation channel, a second heat dissipation channel and a third heat dissipation channel, the first heat dissipation channel and the second heat dissipation channel respectively introduce cold air from the top cover and the bottom shell. The two streams of cold air dissipate heat from the circuit board and other components in the first heat dissipation channel and finally exhaust from the third heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel realize the introduction and heat dissipation of two streams of cold air, which can increase the amount of cold air entering. The two streams of cold air introduced from different directions can also increase the contact area with the circuit board and other components, thereby improving the heat dissipation efficiency to meet the heat dissipation requirements of the cooking device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a cooking device in one embodiment;

[0024] Figure 2 This is a cross-sectional view of a cooking device in one embodiment;

[0025] Figure 3 This is a schematic diagram illustrating the airflow direction within the cooking device in one embodiment;

[0026] Figure 4 This is a schematic diagram illustrating the airflow direction within the cooking device in one embodiment;

[0027] Figure 5 This is a schematic diagram of the structure of the first inner cover of the cooking device in one embodiment;

[0028] Figure 6 This is a schematic diagram of the structure of the second inner cover of the cooking device in one embodiment;

[0029] Figure 7 This is a schematic diagram of the structure of the first air inlet and air outlet of the cooking device in one embodiment;

[0030] The accompanying diagrams are labeled as follows:

[0031] 1-Shell, 11-Top cover, 111-First cavity, 112-Second cavity, 113-First air inlet, 1131-First guide plate, 114-Air outlet, 1141-Second guide plate, 115-First partition plate, 116-First through hole, 117-Second through hole, 12-Bottom shell, 121-Insulation cavity, 122-Cooking cavity, 123-Second air inlet, 13-First inner cover, 131-First opening, 132-Second opening, 133-Second partition plate, 14-Second inner cover, 141-Third opening, 142-Third partition plate, 15-Third inner cover, 16-Supporting component;

[0032] 2-Circuit board;

[0033] 3-Fan, 31-First blade, 32-Second blade, 33-Motor, 34-Shaft;

[0034] 4-First heating element;

[0035] 5-Second heating element. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0037] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0038] The component numbers used in this document, such as "first" and "second," are merely for distinguishing the described objects and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" in this application include both direct and indirect connections (linkages). The vertical direction in this document refers to the orientation of the cooking equipment in its operational state.

[0039] In one embodiment, a cooking device is provided, which may be an air fryer or other device that cooks food by electric heating.

[0040] The cooking device in this embodiment redesigns the heat dissipation channels within the lid, placing portions of the air intake and exhaust channels at the same height, forming a staggered heat dissipation network. Specifically, the air intake and exhaust channels around the lid are at the same or nearly the same height, while the air intake and exhaust channels in the center of the lid are arranged vertically. This reduces the space occupied by the intake and exhaust channels, allowing for a smaller lid design; for example, the lid can be designed as a dome or semi-circular shape, resulting in a smaller volume. Furthermore, the air inlet and outlet of the lid can be integrated into a single structure, resulting in a simpler and more aesthetically pleasing design.

[0041] Please refer to Figures 1 to 6 The cooking device in this embodiment mainly includes a housing 1, a circuit board 2 and a fan 3. The cooking device also includes other components such as a first heating element 4 and a second heating element 5.

[0042] The housing 1 includes an upper cover 11 and a bottom shell 12. The upper cover 11 is disposed on the bottom shell 12, and the upper cover 11 and the bottom shell 12 form a complete housing. The upper cover 11 and the bottom shell 12 can also be a fixed structure. A drawer-type structure is provided on the side of the upper cover 11 and the bottom shell 12, through which food can be taken out and put in.

[0043] In other embodiments, the top cover 11 can also be configured as a flip-top structure. One side of the top cover 11 is rotatably connected to the bottom shell 12 via a hinge or other structure, and the other side of the top cover 11 can be provided with a snap-fit ​​structure or a locking structure to connect to the bottom shell 12. The top cover 11 can be flipped open relative to the bottom shell 12 to put in and take out food.

[0044] In other embodiments, the top cover 11 may also be configured as a detachable structure. The top cover 11 and the bottom shell 12 are connected by a detachable snap-fit ​​or locking connection. When the top cover 11 is opened, it can be separated from the bottom shell 12. The detachable top cover 11 can also be used to put in and take out food.

[0045] In this embodiment, the upper cover 11 is provided with a first cavity 111 and a second cavity 112, which are separated. A portion of the first cavity 111 is located above the second cavity 112, and a portion of the first cavity 111 is at the same or similar height as the second cavity 112. Specifically, the first cavity 111 surrounds the second cavity 112 and is located above it. The middle portion of the first cavity 111 is located above the second cavity 112, and the middle portion of the first cavity 111 communicates with the middle portion of the second cavity 112. The periphery of the first cavity 111 is at the same or similar height as the second cavity 112, and the periphery of the first cavity 111 surrounds the periphery of the second cavity 112.

[0046] The upper cover 11 contains a first inner cover 13 and a second inner cover 14, which are installed inside the upper cover 11. The upper cover 11 can be a dome-shaped structure, and the first inner cover 13 and the second inner cover 14 are dome-shaped structures similar to the upper cover 11, with the structures of the upper cover 11, the first inner cover 13, and the second inner cover 14 decreasing in size sequentially. The first inner cover 13 is located above the second inner cover 14, and the first inner cover 13 and the upper cover 11 form a first cavity 111, while the second inner cover 14 and the first inner cover 13 form a second cavity 112. The first inner cover 13 and the second inner cover 14 can be an integral structure or a structure composed of multiple shells.

[0047] The first inner cover 13, the second inner cover 14, and the top cover 11 can be sequentially fixed together by means of screws, welding, snap-fit, etc. In other embodiments, any two or all three of the top cover 11, the first inner cover 13, and the second inner cover 14 can be configured as an integrated structure. The top cover 11 is provided with corresponding mounting ports and mounting plates, which can also facilitate the installation of internal components.

[0048] In this embodiment, the outer surface of the upper cover 11 is provided with a first air inlet 113 and an air outlet 114. The first air inlet 113 is connected to the first cavity 111, which forms a first heat dissipation channel, i.e., the first cavity 111 is the first air inlet channel. The air outlet 114 is connected to the second cavity 112, which forms a second heat dissipation channel, i.e., the second cavity 112 is the air outlet channel. Air can enter the upper cover 11 from the first air inlet 113, pass through the first cavity 111 (first heat dissipation channel) and the second cavity 112 (second heat dissipation channel) in sequence, and then be discharged from the air outlet 114.

[0049] The first inner cover 13 is provided with a first opening 131 and a second opening 132. The side of the first inner cover 13 is provided with a first opening 131 and a second opening 132. The first opening 131 and the second opening 132 are respectively aligned with the air outlet 114. The second cavity 112 is connected to the air outlet 114 through the first opening 131.

[0050] In this embodiment, the bottom shell 12 is provided with a heat insulation cavity 121 and a cooking cavity 122. The cooking cavity 122 is used to place and cook food. The cooking cavity 122 is enclosed by the top cover 11 and the bottom shell 12 to form a relatively closed structure. The heat insulation cavity 121 is disposed around and below the cooking cavity 122, and the heat insulation cavity 121 encloses the cooking cavity 122, which can insulate and keep the cooking cavity 122 warm, preventing heat from the cooking cavity 122 from escaping to the bottom shell 12 and its outer surface. At the same time, the first cavity 111 and the second cavity 112 of the top cover 11 also have a heat insulation function, which can prevent heat from the cooking cavity 122 from escaping to the top cover 11 and its outer surface.

[0051] The bottom shell 12 is provided with a third inner cover 15, which together with the bottom shell 12 forms a heat insulation cavity 121. The third inner cover 15 forms a cooking cavity 122 with an opening, and the third inner cover 15 together with the second inner cover 14 forms a relatively sealed heat insulation cavity 121.

[0052] The second inner cover 14 is provided with a third opening 141, which is connected to the cooking cavity 122. The side of the second inner cover 14 is provided with a third opening 141, and the third opening 141, the second opening 132 and the air outlet 114 are aligned and connected in sequence.

[0053] The third inner cover 15 can be fixedly connected to the bottom shell 12 by means of screws, welding, snap-fit, etc. In other embodiments, the bottom shell 12 and the third inner cover 15 can be an integrated structure.

[0054] In this embodiment, the bottom surface of the bottom shell 12 is provided with a second air inlet 123, and the lower end of the bottom shell 12 is provided with a protruding support foot, so that the second air inlet 123 on the bottom surface of the bottom shell 12 can be used for air intake. Setting the second air inlet 123 on the bottom surface of the bottom shell 12 forms a concealed design, which is more aesthetically pleasing; and cool air entering from the bottom surface of the bottom shell 12 can pass through more areas, resulting in better heat dissipation. In other embodiments, the second air inlet 123 can also be located at the lower end of the outer circumferential side of the bottom shell 12.

[0055] In this embodiment, the second air inlet 123 is connected to the heat insulation cavity 121, which forms the third heat dissipation channel. Corresponding openings are provided on the upper end face of the bottom shell 12 and the lower end face of the top cover 11, allowing the upper end of the heat insulation cavity 121 to connect with the lower end of the first cavity 111. Air can enter the bottom shell 12 through the second air inlet 123, and sequentially pass through the heat insulation cavity 121 (third heat dissipation channel), the first cavity 111 (first heat dissipation channel), and the second cavity 112 (second heat dissipation channel), before being discharged from the air outlet 114. That is, the air in the third heat dissipation channel and the first heat dissipation channel will merge into the second heat dissipation channel and then be discharged together from the air outlet 114.

[0056] The air outlet 114 is also connected to the cooking cavity 122. The cooking cavity 122 can be directly connected to the air outlet 114, or it can be indirectly connected to the second cavity 112, for example, through a third opening 141. The air outlet 114 can serve as both the air inlet and outlet of the cooking cavity 122. Since the air volume inside the cooking cavity 122 is relatively small, the air inlet and outlet can be combined into a single opening for a more aesthetically pleasing result.

[0057] In other embodiments, the top cover 11 may also be provided with separate air inlets and outlets, and the cooking cavity 122 is connected to the separate air inlets and outlets, which can also realize the connection between the cooking cavity 122 and the outside air, and realize the intake and exhaust of the cooking cavity 122.

[0058] In this embodiment, circuit board 2 is installed inside the first cavity 111. Circuit board 2 is the control module of the cooking device, which can control the cooking temperature and cooking mode. The first heat dissipation channel formed by the first cavity 111 can achieve good air heat dissipation for circuit board 2, keeping circuit board 2 at a relatively suitable low temperature and ensuring the normal operation of circuit board 2.

[0059] The fan 3 mainly includes a first blade 31 and a second blade 32. The fan 3 also includes a motor 33 and a rotating shaft 34. The motor 33 is connected to the rotating shaft 34 and is installed inside the first cavity 111. The motor 33 is electrically connected to the circuit board 2, which is used to control the start, stop, and speed of the motor 33. The first cavity 111 and the second cavity 112 are provided with a first through hole 116 in the middle. The first through hole 116 is located in the middle of the first inner cover 13. The second cavity 112 and the cooking cavity 122 are provided with a second through hole 117 in the middle. The second through hole 117 is located in the middle of the second inner cover 14. The rotating shaft 34 passes through the first through hole 116 and the second through hole 117 sequentially from top to bottom in the first cavity. The lower end of the rotating shaft 34 is located inside the cooking cavity 122. The first blade 31 is installed in the middle of the rotating shaft 34 and is located in the second cavity 112. The first blade 31 is close to the first through hole 116. The diameter of the first through hole 116 is relatively large, so that there is still enough space for air to circulate after the rotating shaft 34 passes through the first through hole 116. The first blade 31 is used to exhaust the air in the first cavity 111 and the heat insulation cavity 121 into the second cavity 112. That is, the first blade 31 serves as the power source for heat dissipation and airflow.

[0060] In other embodiments, part or all of the first blade 31 is located within the first through hole 116. The first blade 31 is located at the connection between the first heat dissipation channel and the third heat dissipation channel. The first blade 31 can also be used to exhaust air in the first heat dissipation channel and the second heat dissipation channel into the third heat dissipation channel.

[0061] In other embodiments, the first blade 31 may also be disposed in the first cavity 111 and close to the first through hole 116. The first blade 31 may also be used to exhaust the air in the first heat dissipation channel and the second heat dissipation channel into the third heat dissipation channel.

[0062] Please refer to Figure 4 Driven by the first blade 31, a first stream of air enters the first cavity 111 (first heat dissipation channel) from the first air inlet 113 on the side of the top cover 11, and a second stream of air enters the heat insulation cavity 121 (second heat dissipation channel) from the second air inlet 123 at the bottom of the bottom shell 12. The first blade 31 then drives the first and second streams of air to converge from the first through hole 116 into the second cavity 112 (third heat dissipation channel), and finally exhausts them from the air outlet 114 on the side of the top cover 11. When the cold air flows through the first cavity 111 and the heat insulation cavity 121, it can exchange heat with the circuit board 2 and motor 33 and other heat-generating components in the first cavity 111, carrying away the heat generated by these components and achieving heat dissipation, as well as dissipating heat in the heat insulation cavity 121.

[0063] The second blade 32 is installed at the lower end of the rotating shaft 34 and is located inside the cooking chamber 122. The second blade 32 is also located at the upper end of the cooking chamber 122. It is used to blow hot air onto and around the food to cook it. The second through hole 117 is relatively small; its inner diameter is only slightly larger than that of the rotating shaft 34. The second through hole 117 allows the rotating shaft 34 to pass through, while minimizing the gap formed after the shaft passes through, thus preventing heat leakage from the cooking chamber 122.

[0064] In this embodiment, a support 16 is provided inside the cooking cavity 122. The support 16 is a tray structure and is used to place food. The support 16 can also serve as a partition structure between the cooking cavity 122 and the heat insulation cavity 121.

[0065] The first heating element 4 is positioned above the support member 16 and below the second blade 32. The first heating element 4 can be a resistance heating structure such as a copper tube. The first heating element 4 is electrically connected to the circuit board 2. The circuit board 2 controls the heating power and heating time of the first heating element 4. The first heating element 4 is used to convert electrical energy into heat energy and to heat the surrounding air. The second blade 32 is used to blow the hot air around the first heating element 4 to the food below, heating the food from above to achieve cooking.

[0066] The second heating element 5 is located below the support member 16 and at the lower end of the cooking cavity 122. The second heating element 5 can also be a resistance heating structure such as a copper tube. The second heating element 5 is electrically connected to the circuit board 2, which controls the heating power and heating time of the second heating element 5. The second heating element 5 is used to convert electrical energy into heat energy. The second heating element 5 can also be directly connected to the support member 16 to directly heat the support member 16, thereby heating the food underneath and cooking it.

[0067] In other embodiments, the cooking device may not have a second heating element 5, and the cooking of some foods can be achieved by using the first heating element 4 provided above.

[0068] In this embodiment, the direction and trajectory of the cooling airflow are shown in Figure 3 and... Figure 4 As shown, the first air intake cooling route F1 is: first air inlet 113 - first cavity 111 (first heat dissipation channel) - first through hole 116; the second air intake cooling route F2 is: second air inlet 123 - heat insulation cavity 121 (second heat dissipation channel) - first cavity 111 (first heat dissipation channel) - first through hole 116; the exhaust cooling route F3 is: first through hole 116 - second cavity 112 (third heat dissipation channel) - first opening 131 - air outlet 114. The first air intake cooling route F1 and the second air intake cooling route F2 mix within the first cavity 111 and converge together through the first through hole 116 into the second cavity 112 (third heat dissipation channel), meaning that the two air intake channels exhaust hot air through the same exhaust channel.

[0069] In this embodiment, the first air inlet 113 and the air outlet 114 are located within the same circumference or the same annular circle of the upper cover 11, that is, the first air inlet 113 and the air outlet 114 are located at the same height or similar height, and are located at the lower end or near the lower end of the upper cover 11.

[0070] In a preferred embodiment, the first air inlet 113 and the air outlet 114 are arranged side by side, forming a ventilation opening, which makes the appearance of the cooking equipment simpler and more beautiful.

[0071] The first air inlet 113 and the air outlet 114 can also be located at the rear end of the top cover 11, that is, the first air inlet 113 and the air outlet 114 are located in the direction away from the user, which can prevent the hot air exhausted by heat dissipation from affecting the user's experience.

[0072] In other embodiments, the first air inlet 113 and the air outlet 114 can also be arranged alternately. For example, the first air inlet 113 can be located on the front side of the upper cover 11, and the air outlet 114 can be located on the rear side of the upper cover 11. The first air inlet 113 and the air outlet 114 are located at the same height position of the upper cover 11, which can also reduce the internal space of the upper cover 11. The first air inlet 113 and the air outlet 114 can also be arranged alternately at other positions. For example, the air outlet 114 can also be located on the top of the upper cover 11.

[0073] The cooking device in this embodiment is equipped with a first heat dissipation channel, a second heat dissipation channel, and a third heat dissipation channel. The first and second heat dissipation channels allow air to enter from the top cover 11 and the bottom shell 12, respectively. The two air channels dissipate heat from the second heating element 5 and components such as the circuit board 2 in the first heat dissipation channel, and finally exhaust the air from the third heat dissipation channel. The first and second heat dissipation channels enable the introduction of two air channels for heat dissipation, which can increase the amount of air entering. The two air channels introduced from different directions can dissipate heat from the top and bottom of the cooking device, respectively. They can also increase the contact area with components such as the second heating element 5 and the circuit board 2, thereby improving the heat dissipation efficiency to meet the heat dissipation requirements of the cooking device.

[0074] In this embodiment of the cooking device, since the first air inlet 113 and the air outlet 114 of the upper cover 11 are located within the same circumference or the same annular ring of the upper cover 11, and the first cavity 111 and the second cavity 112 are partially staggered within the same height space, the layout is more compact. This allows full utilization of the space inside the upper cover 11, enabling the upper cover 11 to be designed as a smaller structure, thus achieving a miniaturized design of the upper cover 11. For example, the upper cover 11 can be designed as a dome structure, a semi-circular structure, or a structure where the center is higher than the surrounding area. This structure is not only smaller in size but also more aesthetically pleasing.

[0075] In one embodiment, the upper cover 11 is provided with two first air inlets 113 and one air outlet 114. The two first air inlets 113 are located on both sides of the air outlet 114, with one first air inlet 113 located on one side of the air outlet 114 and the other first air inlet 113 located on the other side of the air outlet 114. This arrangement can improve the symmetry of air intake, which is conducive to the airflow in the first cavity 111 and avoids dead corners in the first cavity 111.

[0076] In other embodiments, a greater number of first air inlets 113 may be provided, with multiple first air inlets 113 located at different positions.

[0077] In one embodiment, the first opening 131 and the second opening 132 of the first inner cover 13 can be arranged side by side, with the first opening 131 located above the second opening 132. This arrangement allows the first opening 131 and the second opening 132 to be close together, so that the first opening 131 and the second opening 132 can be simultaneously aligned with the larger-diameter air outlet 114.

[0078] In one embodiment, the first opening 131 and the second opening 132 can also be arranged side by side, either horizontally or front to back. This also allows for a compact layout of the first opening 131 and the second opening 132.

[0079] In one embodiment, the first opening 131 and the second opening 132 can also be spaced apart, and the first opening 131 and the second opening 132 are respectively provided with an air outlet, which can also realize the exhaust of the heat dissipation channel and the intake and exhaust of the cooking cavity 122.

[0080] In one embodiment, the first air inlet 113 is provided with one or more first guide vanes 1131, for example, the first air inlet 113 has multiple grid-shaped first guide vanes 1131, which are parallel to each other. The air outlet 114 is provided with one or more second guide vanes 1141, for example, the air outlet 114 has multiple grid-shaped second guide vanes 1141, which are parallel to each other. The first guide vanes 1131 and the second guide vanes 1141 have different inclination directions so that the flow direction of the cold air entering the first air inlet 113 does not intersect with the flow direction of the hot air exiting the air outlet 114.

[0081] Please refer to Figure 7 The first guide plate 1131 and the second guide plate 1141 are staggered vertically. The first guide plate 1131 is tilted downwards to guide the cold air below and outside the first air inlet 113 into the first cavity 111. The second guide plate 1141 is tilted upwards to guide the hot air to exit the air outlet 114 at an upward angle. Since hot air has a relatively low density, it continues to rise after being exited at an upward angle, preventing it from re-entering the heat dissipation channel. This arrangement, by separating the cold and hot air, prevents the first air inlet 113 from re-introducing the exited hot air into the heat dissipation channel, resulting in better heat dissipation.

[0082] In one embodiment, the first guide plate 1131 and the second guide plate 1141 are arranged with left and right tilted and offset or front and back tilted and offset. For example, if the first air inlet 113 and the air outlet 114 are arranged side by side on the rear side of the upper cover 11, then the first guide plate 1131 and the second guide plate 1141 are tilted left and right; if the first air inlet 113 and the air outlet 114 are arranged side by side on the left or right side of the upper cover 11, then the first guide plate 1131 and the second guide plate 1141 are tilted front and back. The first guide plate 1131 and the second guide plate 1141 form an outward V-shaped structure, which can also separate the exhaust hot air from the intake cold air and prevent the exhaust hot air from re-entering the heat dissipation channel.

[0083] In one embodiment, to prevent hot air in the second cavity 112 from re-entering the first cavity, a partition structure such as a first partition plate 115 can be provided between the first opening 131 and the second opening 132 and the first air inlet 113. The first partition plate 115 can separate the air inlet channel and the air outlet channel to prevent them from crossing and getting confused.

[0084] In one embodiment, the first opening 131 and the second opening 132 can be arranged side by side, and a second partition plate 133 can be provided between the first opening 131 and the second opening 132. The second partition plate 133 separates the first opening 131 and the second opening 132 to prevent the space between the second cavity 112 and the cooking cavity 122 from flowing to each other, that is, to prevent the hot air discharged from heat dissipation from entering the cooking cavity 122.

[0085] In one embodiment, a third partition plate 142 may be provided on the inner side of the third opening 141. The third partition plate 142 separates the air inlet channel and the air outlet channel of the cooking cavity 122, so that the cooking cavity 122 can realize air intake and exhaust through the air outlet 114.

[0086] In one embodiment, the main structure of the cooking device is located on the upper cover 11, and a base plate and other structures are installed at the lower end of the upper cover 11 to form a complete cooking structure. A heat insulation cavity 121 is located at the top, and the upper cover 11 is equipped with a heat insulation cavity 121. A second air inlet 123 is also located on the upper cover 11, and the second air inlet 123 can be located at the bottom of the upper cover 11. This cooking device structure can also form two air intake and heat dissipation channels, which converge and exhaust through a single air outlet channel, thus improving heat dissipation efficiency.

[0087] In one embodiment, both the upper cover 11 and the bottom shell 12 of the cooking device are provided with heat insulation chambers 12, and the heat insulation chambers 12 at the upper and lower ends are respectively provided with second air inlets 123. In this cooking device, three air inlet heat dissipation channels can be formed, and the three air inlet heat dissipation channels converge and are discharged from one air outlet heat dissipation channel, which can provide heat dissipation efficiency.

[0088] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A cooking device, characterized in that, include: The housing includes an upper cover and a lower cover. The upper cover has a first cavity and a second cavity. The upper cover and / or the lower cover has a heat insulation cavity. The upper cover and the lower cover form a cooking cavity. Circuit board, installed in the first cavity; and A fan electrically connected to the circuit board, the fan including a first blade and a second blade, the first blade being located in the second cavity and the second blade being located in the cooking cavity; The upper cover is provided with a first air inlet and an air outlet. The first air inlet is connected to the first cavity, and a first heat dissipation channel is formed inside the first cavity. The bottom shell or the bottom of the upper cover is provided with a second air inlet, which is connected to the heat insulation cavity. The heat insulation cavity is connected to the first cavity, and a second heat dissipation channel is formed inside the heat insulation cavity. The first cavity is connected to the second cavity, and the second cavity is connected to the air outlet. A third heat dissipation channel is formed inside the second cavity, and the third heat dissipation channel is connected to the first heat dissipation channel. The air outlet is also connected to the cooking cavity.

2. The cooking apparatus as described in claim 1, characterized in that, The first air inlet is located on the side of the upper cover, and the air outlet is located on the side or top of the upper cover, or the air outlet is located on the bottom or side of the bottom shell. The first blade is located at the first heat dissipation channel, the third heat dissipation channel, or the connection between the first heat dissipation channel and the third heat dissipation channel. During heat dissipation, a first stream of air enters the first heat dissipation channel from the first air inlet on the top or side of the upper cover, and a second stream of air enters the second heat dissipation channel from the second air inlet on the bottom or side of the bottom shell, and then enters the first heat dissipation channel. The first blade is used to drive the first and second streams of air to converge into the third heat dissipation channel and be discharged from the air outlet.

3. The cooking apparatus as described in claim 1, characterized in that, The first air inlet and air outlet are located within the same circumference or the same annular ring of the upper cover.

4. The cooking apparatus as described in claim 3, characterized in that, The first air inlet and air outlet are arranged side by side.

5. The cooking apparatus as described in claim 1, characterized in that, The upper cover is provided with a first inner cover and a second inner cover. The first inner cover and the upper cover form the first cavity, and the first inner cover and the second inner cover form the second cavity. The bottom shell is provided with a third inner cover. The bottom shell and the third inner cover form the heat insulation cavity, and the second inner cover and the third inner cover form the cooking cavity.

6. The cooking apparatus as described in claim 5, characterized in that, The top cover, the first inner cover, and the second inner cover are dome structures, with the first cavity surrounding the top and all sides of the second cavity.

7. The cooking apparatus as described in claim 5, characterized in that, The first inner cover has a first opening and a second opening. The first opening communicates with the second cavity and is aligned with and communicates with the air outlet. The second inner cover has a third opening, which communicates with the cooking cavity. The third opening, the second opening, and the air outlet are aligned and communicated with each other in sequence.

8. The cooking apparatus as described in claim 7, characterized in that, A first partition plate is provided between the first opening and the second opening and the first air inlet; and / or, a second partition plate is provided between the first opening and the second opening.

9. The cooking apparatus according to any one of claims 1 to 8, characterized in that, The first air inlet is provided with one or more first guide vanes, and the air outlet is provided with one or more second guide vanes. The first guide vanes and the second guide vanes are inclined in different directions so that the flow direction of the cold air entering the first air inlet does not intersect with the flow direction of the hot air exiting the air outlet.

10. The cooking apparatus as described in claim 9, characterized in that, The first guide vane is inclined downward to guide the cold air below the first air inlet into the first air inlet; and / or, the second guide vane is inclined upward to guide the hot air discharged from the air outlet upward.

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