Air fryer

Abstract

The utility model provides an air fryer which comprises a fryer body provided with a cooking cavity and an installation wall located in the cooking cavity. The hot air device is arranged on the pot body and used for conveying hot air to the cooking cavity, the hot air device comprises a driving part and fan blades which are connected, the fan blades are located in the cooking cavity, and at least one part of the mounting wall is located between the fan blades and the driving part; the side face, facing the mounting wall, of the fan blade is a first face, and the distance between the outer edge of the first face and the mounting wall is larger than the distance between the center of the first face and the mounting wall in the axial direction of the fan blade.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, and in particular to an air fryer. Background Art

[0002] At present, the air fryer in the related technology uses electromagnetic drive blades to generate heat. In order to meet a certain heating power, the diameter of the blades is usually relatively large, which causes the blades to easily rub against the insulation board during rotation, affecting the service life of the air fryer. Utility Model Content

[0003] The embodiments of the utility model are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the utility model provides an air fryer.

[0005] In view of this, according to a first aspect of an embodiment of the utility model, an air fryer is provided, the air fryer comprising: a pot body, the pot body being provided with a cooking cavity and a mounting wall located in the cooking cavity; a hot air device, arranged in the pot body, for delivering hot air to the cooking cavity, the hot air device comprising a connected driving member and a fan blade, the fan blade being located in the cooking cavity, and at least a portion of the mounting wall being located between the fan blade and the driving member; wherein, a side surface of the fan blade facing the mounting wall is a first surface, and along the axial direction of the fan blade, a distance between an outer edge of the first surface and the mounting wall is greater than a distance between a center of the first surface and the mounting wall.

[0006] The air fryer provided by the embodiment of the utility model includes a pot body and a hot air device. Specifically, the pot body is provided with a cooking cavity. The hot air device can transport hot air to the cooking cavity so that the hot air flow circulates in the cooking cavity, thereby achieving heating and cooking of the food to be heated in the cooking cavity.

[0007] The hot air device includes a driving member and a fan blade, wherein the fan blade is located in the cooking cavity, that is, driven by the driving member, the fan blade can rotate in the cooking cavity to form a hot air circulation in the cooking cavity.

[0008] The pot body is also provided with a mounting wall, which is located in the cooking cavity, and at least a part of the mounting wall is located between the driving member and the fan blade.

[0009] The side of the fan blade facing the mounting wall is the first surface, that is, the upper surface of the fan blade is the first surface. Along the axial direction of the fan blade, the distance between the outer edge of the first surface and the mounting wall is greater than the distance between the center of the first surface and the mounting wall. In other words, the height of the middle position of the first surface is set higher, and the height of the edge position of the first surface is set relatively lower.

[0010] That is, the distance between the edge of the fan blade and the mounting wall is increased, so that when the fan blade rotates in the cooking chamber, the friction between the edge of the fan blade and the mounting wall can be effectively avoided, thereby avoiding wear caused by friction and extending the service life of the fan blade and the air fryer. In addition, the noise caused by friction between the fan blade and the mounting wall can be avoided, thereby improving the user experience of the air fryer.

[0011] In addition, the air fryer provided according to the above technical solution of the utility model also has the following additional technical features:

[0012] In some technical solutions, optionally, a distance h1 between an outer edge of the first surface and the mounting wall and a distance h2 between a center of the first surface and the mounting wall satisfy: 0.5 mm ≤ h1 - h2 ≤ 3 mm.

[0013] In this technical solution, the height difference between the edge position of the first surface and the center position of the first surface is defined. Specifically, the height difference is between 0.5 mm and 3 mm. Thus, the problem of friction between the edge position of the first surface and the mounting wall can be avoided while ensuring the heating efficiency of the air fryer.

[0014] It is understandable that if the height difference between the edge position of the first surface and the center position of the first surface is too large, that is, greater than 3 mm, the edge position of the fan blade is closer to the food in the cooking cavity. When the amount of food to be cooked is large, the edge position of the fan blade is easy to touch the food, affecting the cooking effect.

[0015] Moreover, the hot air device further comprises an electromagnetic component, which is opposite to the fan blade, and optionally, the electromagnetic component is located between the driving component and the fan blade. If the height difference between the edge position of the first surface and the center position of the first surface is too large, the distance between the fan blade and the electromagnetic component will be increased, affecting the heating efficiency of the air fryer.

[0016] If the height difference between the edge of the first surface and the center of the first surface is too small, that is, less than 0.5 mm, it will not reduce friction, resulting in wear between the fan blades and the mounting wall, reducing the service life of the air fryer, and generating noise during the operation of the air fryer, affecting the user experience.

[0017] In some technical solutions, optionally, an avoidance groove is provided on the installation wall, the avoidance groove is connected to the cooking cavity, and the notch of the avoidance groove faces the first surface.

[0018] In this technical solution, it is defined that the installation wall is provided with an avoidance groove, specifically, the avoidance groove is communicated with the cooking cavity.

[0019] Specifically, the notch of the avoidance groove faces the first surface, which further increases the distance between the first surface and the mounting wall, so that the friction between the fan blade and the mounting wall can be effectively avoided during the rotation of the fan blade in the cooking cavity, thereby avoiding the wear caused by friction and extending the service life of the fan blade and the air fryer.

[0020] It can be understood that, along the axial direction of the fan blade, a portion of the mounting wall is recessed in a direction away from the fan blade to form an avoidance groove.

[0021] In some technical solutions, optionally, at least a portion of the first surface is configured as an inclined surface or a curved surface.

[0022] In this technical solution, it is defined that at least a portion of the first surface is constructed as a slope, that is, the first surface extends downward from the center position to the edge position, thereby increasing the distance between the edge position of the first surface and the mounting wall, avoiding the problem of friction between the fan blades and the mounting wall during the rotation of the fan blades in the cooking cavity, reducing the wear of the fan blades and the mounting wall, and extending the service life of the air fryer.

[0023] At least a portion of the first surface is configured as an arc surface, which can be configured according to actual needs.

[0024] In some technical solutions, optionally, the first surface includes a first part and a second part, and along the radial direction of the wind blade, the second part is located outside the first part; wherein the first part is constructed as a plane, and the second part is constructed as an inclined surface or an arc surface.

[0025] In this technical solution, it is defined that the first surface includes a first part and a second part. Specifically, the second part is located radially outside the first part, that is, the first part is arranged close to the center.

[0026] The first part is constructed as a plane, that is, a plane is set at the center of the fan blade. It is understandable that the center of the fan blade generally needs to be installed in conjunction with the motor and other components. In addition, the blades in the related art are prone to a certain degree of unevenness due to their large diameter, and the motor and other components will also have a certain degree of non-verticality after installation, which causes the blades to not rotate horizontally and shake during the rotation process.

[0027] Since the center position of the fan blade is a plane, the flatness of the assembly position of the fan blade and other components can be improved, and the unevenness of the fan blade after assembly can be reduced, thereby effectively reducing the shaking of the fan blade during rotation, and further avoiding friction between the fan blade and the installation wall during rotation, thereby extending the service life of the air fryer and reducing the noise generated by the air fryer during operation.

[0028] The second part is constructed as an inclined surface or an arc surface. It is understandable that during the rotation of the fan blade, the linear speed of the edge of the fan blade is high, and the damage caused by scratching is greater. Therefore, the position close to the edge is set as an inclined surface or an arc surface to increase the distance between the edge of the fan blade and the installation wall, thereby reducing the wear of the fan blade and the installation wall.

[0029] In some technical solutions, optionally, the connection between the first part and the second part has a smooth transition.

[0030] In this technical solution, a smooth transition is defined at the connection between the first part and the second part, thereby avoiding stress concentration areas in the fan blade, improving the overall structural strength of the fan blade, and extending the service life of the fan blade.

[0031] In some technical schemes, optionally, the air fryer also includes a connecting shaft and a limit assembly, wherein the first end of the connecting shaft is connected to the driving member, the second end of the connecting shaft passes through the mounting wall and is connected to the fan blade, and the limit assembly is connected to the second end of the connecting shaft and is at least partially located on the first part.

[0032] In this technical solution, it is defined that the air fryer also includes a connecting shaft and a limiting assembly. Specifically, under the drive of the driving member, the connecting shaft can drive the fan blades to rotate in the cooking cavity.

[0033] The limiting assembly is connected to the second end of the connecting shaft, and at least a portion of the limiting assembly is located on the first portion, that is, the limiting assembly is arranged on the side of the fan blade facing the mounting wall, so that the fan blade can be limited in the axial direction of the fan blade, thereby improving the assembly stability and reliability between the fan blade and the connecting shaft.

[0034] Since at least a portion of the limiting component is located on the first portion, that is, at least a portion of the limiting component is located on a plane, the flatness of the limiting component and the fan blade assembly position can be improved, and the unevenness of the fan blade after assembly can be reduced, thereby effectively reducing the shaking of the fan blade during rotation, and further avoiding friction between the fan blade and the installation wall during rotation, thereby extending the service life of the air fryer and reducing the noise generated by the air fryer during operation.

[0035] Optionally, along the axial direction of the fan blade, the notch of the avoidance groove is opposite to the limit assembly, that is, the avoidance groove is set at the position where the mounting wall and the limit assembly are relative to each other, thereby effectively avoiding the situation where the limit assembly is higher than the first surface due to the setting of the limit assembly, thereby causing friction between the limit assembly and the mounting wall due to the small distance, thereby reducing the wear between the limit assembly and the mounting wall, and further extending the service life of the air fryer.

[0036] Optionally, the cross-sectional area of ​​the notch of the avoidance groove is larger than the cross-sectional area of ​​the limit assembly, that is, the opening area of ​​the notch of the avoidance groove is increased, thereby preventing the limit assembly from rubbing against the portion of the mounting wall located in the avoidance groove due to shaking of the fan blade during rotation, further reducing the wear between the limit assembly and the mounting wall, and extending the service life of the air fryer.

[0037] In some technical solutions, optionally, a limit groove is provided at the second end of the connecting shaft; the limit assembly includes a limit member and a gasket, wherein a portion of the limit member is inserted into the limit groove, and at least a portion of the gasket is provided between the limit member and the first portion.

[0038] In this technical solution, it is defined that the limiting assembly includes a limiting member and a gasket. Specifically, a limiting groove is provided at the second end of the connecting shaft, and a part of the limiting member is inserted into the limiting groove, so as to limit the fan blade in the axial direction of the fan blade, thereby improving the assembly stability and reliability between the fan blade and the connecting shaft.

[0039] At least a portion of the gasket is arranged between the limit member and the first part. It can be understood that the upper and lower surfaces of the gasket are both planes. By arranging the gasket between the limit member and the first part, the plane of the gasket is matched with the first part, thereby further improving the flatness of the limit assembly and the fan blade assembly position, preventing the fan blade from shaking during rotation, thereby effectively reducing the friction between the fan blade and the mounting wall.

[0040] Optionally, the limiting member includes a retaining spring.

[0041] In some technical schemes, optionally, the side of the fan blade facing away from the mounting wall is the second side, the fan blade is provided with an axial hole, along the axial direction of the fan blade, the axial hole passes through the first side and the second side, and the second end of the connecting shaft passes through the axial hole; the air fryer also includes a connecting piece, which is connected to the part of the second end of the connecting shaft that passes through the axial hole.

[0042] In this technical solution, it is defined that the air fryer also includes a connecting piece. Specifically, the side of the fan blade facing away from the mounting wall is the second side. That is to say, along the axial direction of the fan blade, the first side and the second side are respectively located on both sides of the fan blade, that is, the first side is the upper surface and the second side is the lower surface.

[0043] The fan blade is provided with an axial hole, and the axial hole penetrates the first surface and the second surface along the axial direction of the fan blade, that is, the axial hole is a through hole. Optionally, the axial hole is a D-shaped through hole, so that the connecting shaft can drive the fan blade to rotate under the drive of the driving member while realizing the assembly connection between the connecting shaft and the fan blade.

[0044] The second end of the connecting shaft passes through the axial hole, and the connecting piece is connected to the portion of the connecting shaft that passes through the axial hole. That is to say, along the axial direction of the fan blade, the limiting assembly and the connecting piece are respectively located on two opposite sides of the fan blade to limit the fan blade in the axial direction of the fan blade, thereby preventing the fan blade from moving axially relative to the connecting shaft, improving the installation stability and reliability of the fan blade, and further preventing the fan blade from rubbing against the installation wall due to shaking during rotation, thereby further extending the service life of the air fryer and reducing the noise generated during the operation of the air fryer.

[0045] Optionally, the portion of the second end of the connecting shaft passing through the shaft hole is provided with an external thread, the connecting piece is provided with an internal thread, and the connecting piece cooperates with the connecting shaft thread, thereby achieving reliable assembly between the fan blade, the connecting shaft and the connecting piece.

[0046] In some technical solutions, optionally, the second surface includes a planar portion, and along the radial direction of the wind blade, the planar portion is located at the outer periphery of the shaft hole, and at least a portion of the connecting member is located on the planar portion.

[0047] In this technical solution, it is defined that the second surface includes a planar portion. Specifically, along the radial direction of the fan blade, the planar portion is located on the outer peripheral side of the axial hole, and at least a portion of the connecting piece is located on the planar portion. This can improve the flatness of the assembly position of the connecting piece and the fan blade, reduce the unevenness of the fan blade after assembly, further reduce the shaking of the fan blade during rotation, avoid friction between the fan blade and the installation wall during rotation, extend the service life of the air fryer, and reduce the noise generated by the air fryer during operation.

[0048] In some technical solutions, optionally, the fan blade includes an impeller and multiple blades, wherein the impeller is connected to a driving member, a side of the impeller facing the mounting wall is a first side, the multiple blades are arranged along the circumference of the impeller, and the multiple blades are spaced apart on a side of the impeller facing away from the mounting wall.

[0049] In this technical solution, it is defined that the fan blade includes an impeller and a plurality of blades. Specifically, the impeller is connected to a driving member, and the plurality of blades are arranged at intervals along the circumference of the impeller on a side of the impeller away from the mounting wall. That is to say, under the drive of the driving member, the impeller can drive the plurality of blades to rotate in the cooking cavity.

[0050] It is understandable that the impeller is provided with an axial hole, that is, the connecting shaft passes through the axial hole and is connected to the impeller.

[0051] Optionally, the plurality of blades and the impeller are an integrated structure. It is understood that the integrated structure has good mechanical properties, thereby being able to improve the connection strength between the plurality of blades and the impeller. In addition, the integrated structure is also convenient for the processing and production of the fan blades, reducing the difficulty of manufacturing the fan blades, and helping to reduce the production cost of the air fryer.

[0052] In some technical solutions, optionally, the hot air device further includes an electromagnetic component, which is disposed on the pot body and opposite to the fan blade; wherein at least a portion of the fan blade has magnetic conductivity.

[0053] In this technical solution, it is defined that the hot air device also includes an electromagnetic component. Specifically, the electromagnetic component is arranged on the pot body, and the electromagnetic component is opposite to the fan blade, wherein at least a part of the fan blade has magnetic conductivity. That is to say, when the electromagnetic component is powered on, at least a part of the fan blade with magnetic conductivity can generate heat, thereby heating the surrounding air. At the same time, under the drive of the driving component, the fan blade rotates in the cooking cavity, takes away the heat to form a hot air flow, and dissipates the heat generated by the fan blade. At the same time, the hot air flow circulates in the cooking cavity to achieve heating and cooking of the food to be heated in the cooking cavity.

[0054] Specifically, the electromagnetic component can generate an alternating magnetic field when powered on, and under the action of the alternating magnetic field, the fan blade with magnetic conductivity generates heat. Through the interaction between the electromagnetic component and the fan blade with magnetic conductivity, the temperature of the fan blade can be rapidly increased in a short time, and at the same time, when the fan blade rotates, hot air is quickly generated in the cooking cavity.

[0055] It is understandable that since the air fryer uses electromagnetically driven fan blades to heat up the food in the cooking chamber, the fan blades are generally larger in size to ensure the heating power.

[0056] By setting the height of the middle position of the first surface higher and the height of the edge position of the first surface relatively lower, the distance between the edge position of the fan blade and the mounting wall is increased, so that when the fan blade rotates in the cooking cavity, the friction between the edge position of the fan blade and the mounting wall can be effectively avoided, thereby avoiding the wear caused by friction and extending the service life of the fan blade and the air fryer. In addition, the problem of noise caused by friction between the fan blade and the mounting wall can be avoided, thereby improving the user experience of the air fryer.

[0057] Optionally, the electromagnetic component is located between the fan blades and the driving component, that is, the driving component, the electromagnetic component and the fan blades are arranged along the height direction of the pot body, so that while the fan blades are driven by electromagnetics to generate heat and a hot air flow is formed under the rotation of the fan blades, the structural layout of the air fryer is optimized, the heat dissipation layout of the driving component and the electromagnetic component is facilitated, the space utilization rate of the air fryer is improved, and it is conducive to the miniaturization of the air fryer and ensuring the stable operation of the air fryer.

[0058] In some technical solutions, optionally, the pot body is provided with a heat insulating member, the heat insulating member is located between the electromagnetic member and the fan blade, and the heat insulating member is located on a side of the cooking cavity including a mounting wall.

[0059] In this technical solution, it is defined that the pot body is provided with a heat insulating member. Specifically, the heat insulating member is located on one side of the cooking cavity and includes a mounting wall. In other words, increasing the distance between the edge of the fan blade and the mounting wall actually increases the distance between the edge of the fan blade and the heat insulating member, so that when the fan blade rotates in the cooking cavity, it can effectively avoid friction between the edge of the fan blade and the heat insulating member, thereby avoiding wear caused by friction and extending the service life of the fan blade and the air fryer. Moreover, it can also avoid the problem of noise caused by friction between the fan blade and the heat insulating member, and improve the user experience of the air fryer.

[0060] The heat insulation is located between the electromagnetic part and the fan blade. When the electromagnetic part is energized, the fan blade can generate heat. At the same time, the heat generated by the fan blade is taken away by the rotation of the fan blade, so that the surrounding heated air forms a hot air flow, and the hot air flow is used to heat and cook the food.

[0061] By setting a heat insulation member between the electromagnetic member and the fan blade, the heat generated by the fan blade can be effectively reduced from being transferred to the electromagnetic member, thereby avoiding excessive temperature rise of the electromagnetic member due to the heat generated by the fan blade, which in turn affects the performance of the electromagnetic member and extends the service life of the electromagnetic member.

[0062] Optionally, the thermal insulation includes but is not limited to microcrystalline panels, glass, etc.

[0063] In some technical solutions, optionally, the pot body is also provided with a heat dissipation channel, an air inlet and an air outlet, the air inlet and the air outlet are respectively connected to the heat dissipation channel, and the electromagnetic component and the driving component are located in the heat dissipation channel.

[0064] In this technical solution, it is defined that the pot body is also provided with a heat dissipation channel, an air inlet and an air outlet. Specifically, the air inlet and the air outlet are respectively connected to the heat dissipation channel.

[0065] It is understandable that during the operation of the air fryer, the electromagnetic components and the driving components will generate heat. If the heat is not dissipated in time, it will easily cause failure of the electromagnetic components or the driving components, reduce the service life of the electromagnetic components and the driving components, and increase the maintenance cost of the air fryer.

[0066] By arranging the electromagnetic component and the driving component in the heat dissipation channel, air or airflow enters the heat dissipation channel from the air inlet and can flow out through the air outlet. In this process, the heat on the surface of the electromagnetic component and the driving component is taken away, thereby dissipating the heat of the electromagnetic component and the driving component, reducing the probability of failure of the electromagnetic component and the driving component, extending the service life of the air fryer, and reducing the maintenance cost of the air fryer.

[0067] Optionally, the air fryer also includes a heat dissipation fan. Specifically, the heat dissipation fan is arranged on the pot body, and the heat dissipation fan is connected to the air inlet. It can be understood that when the heat dissipation fan is started, it can drive the surrounding air to flow to form an airflow, and the airflow can enter the heat dissipation channel through the air inlet, take away the heat on the surface of the driving parts, electromagnetic parts and other electrical components, and flow out from the air outlet, thereby dissipating the heat of the driving parts, electromagnetic parts and other electrical components located in the heat dissipation channel.

[0068] By setting up a cooling fan, the air flow speed in the cooling channel can be accelerated, the cooling effect of the driving parts, electromagnetic parts and other electrical controls in the cooling channel can be improved, and the reliable operation of the air fryer can be ensured. At the same time, the service life of the air fryer can be extended, the maintenance cost of the air fryer can be reduced, and the user experience can be improved.

[0069] Optionally, the air fryer further comprises an electric control board, specifically, the electric control board is connected to the driving member and the electromagnetic member. It is understandable that the electric control board is electrically connected to the electromagnetic member to supply power to the electromagnetic member, so that the electromagnetic member can generate an alternating magnetic field to heat the fan blade. In addition, the electric control board is also connected to the driving member to control whether the driving member drives the fan blade to rotate.

[0070] The electronic control board is arranged in the heat dissipation channel, so that air or airflow enters the heat dissipation channel from the air inlet and can flow out through the air outlet. In addition to taking away the heat on the surface of the driving parts and the electromagnetic parts, it can also take away the heat on the surface of the electronic control board, thereby achieving heat dissipation of the electronic control board and further extending the service life of the air fryer.

[0071] Optionally, the pot body further comprises an outer shell and an inner cover, the inner cover is located on the inner side of the outer shell, the heat insulating member is located on the side of the inner cover close to the cooking cavity, and the inner cover and the heat insulating member enclose a first heat dissipation chamber for heat dissipation of the electromagnetic member, and the outer shell and the inner cover enclose a second heat dissipation chamber for heat dissipation of the driving member and the electric control board. That is, the heat dissipation channel comprises the first heat dissipation chamber and the second heat dissipation chamber.

[0072] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0074] Figure 1 A schematic structural diagram of an air fryer according to an embodiment of the utility model is shown;

[0075] Figure 2 Shows Figure 1 An enlarged view of the air fryer at position A of the illustrated embodiment;

[0076] Figure 3 One of the structural schematic diagrams of a fan blade according to an embodiment of the utility model is shown;

[0077] Figure 4 A second schematic diagram of the structure of a fan blade according to an embodiment of the utility model is shown;

[0078] Figure 5 A third schematic diagram of the structure of a fan blade according to an embodiment of the utility model is shown;

[0079] Figure 6 A schematic structural diagram of a heat insulating member according to an embodiment of the utility model is shown.

[0080] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0081] 100 air fryer, 110 pot body, 111 cooking cavity, 112 mounting wall, 113 heat insulating member, 114 heat dissipation channel, 115 air inlet, 116 air outlet, 120 hot air device, 121 driving member, 122 fan blade, 123 first surface, 124 outer edge, 125 center, 126 first part, 127 second surface, 128 shaft hole, 129 plane part, 130 connecting shaft, 131 limiting groove, 140 limiting assembly, 141 limiting member, 142 gasket, 150 avoidance groove, 151 notch, 160 connecting member, 170 impeller, 180 blade, 190 electromagnetic member, 210 second part. DETAILED DESCRIPTION

[0082] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0083] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0084] Refer to the following Figures 1 to 6 The air fryer 100 provided according to some embodiments of the present invention is described.

[0085] In one embodiment according to the present application, Figure 1 , Figure 2 and Figure 3As shown, an air fryer 100 is proposed, and the air fryer 100 includes: a pot body 110, the pot body 110 is provided with a cooking cavity 111 and a mounting wall 112 located in the cooking cavity 111; a hot air device 120, which is arranged on the pot body 110 and is used to transport hot air to the cooking cavity 111, and the hot air device 120 includes a connected driving member 121 and a fan blade 122, the fan blade 122 is located in the cooking cavity 111, and at least a part of the mounting wall 112 is located between the fan blade 122 and the driving member 121; wherein, a side surface of the fan blade 122 facing the mounting wall 112 is a first surface 123, and along the axial direction of the fan blade 122, the distance between the outer edge 124 of the first surface 123 and the mounting wall 112 is greater than the distance between the center 125 of the first surface 123 and the mounting wall 112.

[0086] The air fryer 100 provided in the embodiment of the utility model includes a pot body 110 and a hot air device 120. Specifically, the pot body 110 is provided with a cooking cavity 111. The hot air device 120 can transport hot air to the cooking cavity 111 so that the hot air flow circulates in the cooking cavity 111, thereby achieving heating and cooking of the food to be heated in the cooking cavity 111.

[0087] The hot air device 120 includes a driving member 121 and a fan blade 122 . The fan blade 122 is located in the cooking cavity 111 . That is, driven by the driving member 121 , the fan blade 122 can rotate in the cooking cavity 111 to form a hot air circulation in the cooking cavity 111 .

[0088] The pot body 110 is further provided with a mounting wall 112 . The mounting wall 112 is located in the cooking cavity 111 , and at least a portion of the mounting wall 112 is located between the driving member 121 and the fan blade 122 .

[0089] The side surface of the fan blade 122 facing the mounting wall 112 is the first surface 123, that is, the upper surface of the fan blade 122 is the first surface 123. Along the axial direction of the fan blade 122, the distance between the outer edge 124 of the first surface 123 and the mounting wall 112 is greater than the distance between the center 125 of the first surface 123 and the mounting wall 112. In other words, the height of the middle position of the first surface 123 is set higher, and the height of the edge position of the first surface 123 is set relatively lower.

[0090] That is, the distance between the edge of the fan blade 122 and the mounting wall 112 is increased, so that when the fan blade 122 rotates in the cooking cavity 111, friction between the edge of the fan blade 122 and the mounting wall 112 can be effectively avoided, thereby avoiding wear caused by friction and extending the service life of the fan blade 122 and the air fryer 100. In addition, the problem of noise caused by friction between the fan blade 122 and the mounting wall 112 can be avoided, thereby improving the user experience of the air fryer 100.

[0091] like Figure 2 As shown, in some embodiments, optionally, a distance h1 between an outer edge 124 of the first surface 123 and the mounting wall 112 and a distance h2 between a center 125 of the first surface 123 and the mounting wall 112 satisfy 0.5 mm ≤ h1 - h2 ≤ 3 mm.

[0092] In this embodiment, a height difference between the edge of the first surface 123 and the center 125 of the first surface 123 is defined. Specifically, the height difference is between 0.5 mm and 3 mm. Thus, the problem of friction between the edge of the first surface 123 and the mounting wall 112 can be avoided while ensuring the heating efficiency of the air fryer 100.

[0093] It is understandable that if the height difference between the edge position of the first surface 123 and the center position 125 of the first surface 123 is too large, that is, greater than 3 mm, the edge position of the fan blade 122 is closer to the food in the cooking cavity 111. When the amount of food to be cooked is large, the edge position of the fan blade 122 is easy to touch the food, affecting the cooking effect.

[0094] Moreover, the hot air device 120 further includes an electromagnetic member 190, which is opposite to the fan blade 122. Optionally, the electromagnetic member 190 is located between the driving member 121 and the fan blade 122. If the height difference between the edge position of the first surface 123 and the center position 125 of the first surface 123 is too large, the distance between the fan blade 122 and the electromagnetic member 190 will increase, affecting the heating efficiency of the air fryer 100.

[0095] If the height difference between the edge position of the first surface 123 and the center position 125 of the first surface 123 is too small, that is, less than 0.5 mm, it will not reduce the friction, resulting in wear between the fan blades 122 and the mounting wall 112, reducing the service life of the air fryer 100, and generating noise during the operation of the air fryer 100, affecting the user experience.

[0096] like Figure 2 and Figure 6 As shown, in some embodiments, optionally, an avoidance groove 150 is provided on the installation wall 112 , the avoidance groove 150 is communicated with the cooking cavity 111 , and a notch 151 of the avoidance groove 150 faces the first surface 123 .

[0097] In this embodiment, it is defined that the installation wall 112 is provided with an avoidance groove 150 . Specifically, the avoidance groove 150 is communicated with the cooking cavity 111 .

[0098] Specifically, the notch 151 of the avoidance groove 150 faces the first surface 123, which further increases the distance between the first surface 123 and the mounting wall 112, so that during the rotation of the fan blade 122 in the cooking cavity 111, friction between the fan blade 122 and the mounting wall 112 can be effectively avoided, thereby avoiding wear caused by friction and extending the service life of the fan blade 122 and the air fryer 100.

[0099] It can be understood that, along the axial direction of the fan blade 122 , a portion of the mounting wall 112 is recessed in a direction away from the fan blade 122 to form an avoidance groove 150 .

[0100] In some embodiments, optionally, at least a portion of the first surface 123 is configured as an inclined surface or a curved surface.

[0101] In this embodiment, at least a portion of the first surface 123 is defined as a slope, that is, the first surface 123 extends downwardly from the center 125 to the edge, thereby increasing the distance between the edge of the first surface 123 and the mounting wall 112, avoiding friction between the fan blade 122 and the mounting wall 112 during the rotation of the fan blade 122 in the cooking cavity 111, reducing the wear of the fan blade 122 and the mounting wall 112, and extending the service life of the air fryer 100.

[0102] At least a portion of the first surface 123 is configured as an arc surface, which can be configured specifically according to actual needs.

[0103] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, optionally, the first surface 123 includes a first part 126 and a second part 210, and along the radial direction of the wind blade 122, the second part 210 is located on the outside of the first part 126; wherein the first part 126 is constructed as a plane, and the second part 210 is constructed as an inclined surface or an arc surface.

[0104] In this embodiment, the first surface 123 is defined to include a first portion 126 and a second portion 210 . Specifically, the second portion 210 is located radially outside the first portion 126 . That is, the first portion 126 is disposed close to the center.

[0105] The first portion 126 is constructed as a plane, that is, a plane is set at the center of the fan blade 122. It is understandable that the center of the fan blade 122 generally needs to be installed in coordination with components such as a motor. In addition, the blades in the related art are prone to a certain degree of unevenness due to their large diameters, and components such as motors will also have a certain degree of non-verticality after installation, which causes the blades to not rotate horizontally and shake during rotation.

[0106] Since the center position of the fan blade 122 is a plane, the flatness of the assembly position of the fan blade 122 and other components can be improved, and the unevenness of the fan blade 122 after assembly can be reduced, thereby effectively reducing the shaking of the fan blade 122 during rotation, and further avoiding the friction between the fan blade 122 and the mounting wall 112 during rotation, thereby extending the service life of the air fryer 100 and reducing the noise generated by the air fryer 100 during operation.

[0107] The second portion 210 is configured as an inclined surface or an arc surface. It is understandable that, during the rotation of the fan blade 122, the linear velocity of the edge of the fan blade 122 is relatively high, and the damage caused by scratching is relatively large. Therefore, the position close to the edge is configured as an inclined surface or an arc surface to increase the distance between the edge of the fan blade 122 and the mounting wall 112, thereby reducing the wear of the fan blade 122 and the mounting wall 112.

[0108] In some embodiments, optionally, the connection between the first portion 126 and the second portion 210 has a smooth transition.

[0109] In this embodiment, a smooth transition is defined at the connection between the first portion 126 and the second portion 210 , thereby avoiding stress concentration areas in the fan blade 122 , improving the overall structural strength of the fan blade 122 , and extending the service life of the fan blade 122 .

[0110] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, optionally, the air fryer 100 also includes a connecting shaft 130 and a limiting assembly 140, wherein the first end of the connecting shaft 130 is connected to the driving member 121, the second end of the connecting shaft 130 passes through the mounting wall 112 and is connected to the fan blade 122, and the limiting assembly 140 is connected to the second end of the connecting shaft 130 and is at least partially located on the first part 126.

[0111] In this embodiment, it is defined that the air fryer 100 further includes a connecting shaft 130 and a limiting assembly 140 . Specifically, under the drive of the driving member 121 , the connecting shaft 130 can drive the fan blades 122 to rotate in the cooking cavity 111 .

[0112] The limiting assembly 140 is connected to the second end of the connecting shaft 130, and at least a portion of the limiting assembly 140 is located on the first portion 126, that is, the limiting assembly 140 is arranged on the side of the fan blade 122 facing the mounting wall 112, so that the fan blade 122 can be limited in the axial direction of the fan blade 122, thereby improving the assembly stability and reliability between the fan blade 122 and the connecting shaft 130.

[0113] Since at least a portion of the limiting component 140 is located on the first portion 126, that is, at least a portion of the limiting component 140 is located on a plane, the flatness of the assembly position of the limiting component 140 and the fan blade 122 can be improved, and the unevenness of the fan blade 122 after assembly can be reduced, thereby effectively reducing the shaking of the fan blade 122 during rotation, further avoiding friction between the fan blade 122 and the mounting wall 112 during rotation, extending the service life of the air fryer 100, and reducing the noise generated by the air fryer 100 during operation.

[0114] Optionally, along the axial direction of the fan blade 122, the notch 151 of the avoidance groove 150 is opposite to the limit assembly 140, that is, the avoidance groove 150 is set at the position where the mounting wall 112 and the limit assembly 140 are opposite to each other, thereby effectively avoiding the situation where the limit assembly 140 is higher than the first surface 123 due to the setting of the limit assembly 140, thereby causing friction between the limit assembly 140 and the mounting wall 112 due to the small distance, thereby reducing the wear between the limit assembly 140 and the mounting wall 112, and further extending the service life of the air fryer 100.

[0115] Optionally, the cross-sectional area of ​​the notch 151 of the avoidance groove 150 is greater than the cross-sectional area of ​​the limiting assembly 140. That is, the opening area of ​​the notch 151 of the avoidance groove 150 is increased, thereby preventing the limiting assembly 140 from rubbing against the portion of the mounting wall 112 located in the avoidance groove 150 due to shaking of the fan blade 122 during rotation, further reducing the wear between the limiting assembly 140 and the mounting wall 112, and extending the service life of the air fryer 100.

[0116] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, optionally, a limit groove 131 is provided at the second end of the connecting shaft 130; the limit assembly 140 includes a limit member 141 and a gasket 142, wherein a portion of the limit member 141 is inserted into the limit groove 131, and at least a portion of the gasket 142 is provided between the limit member 141 and the first portion 126.

[0117] In this embodiment, the limiting assembly 140 includes a limiting member 141 and a gasket 142. Specifically, a limiting groove 131 is provided at the second end of the connecting shaft 130, and a portion of the limiting member 141 is inserted into the limiting groove 131, thereby limiting the fan blade 122 in the axial direction of the fan blade 122, thereby improving the assembly stability and reliability between the fan blade 122 and the connecting shaft 130.

[0118] At least a portion of the gasket 142 is arranged between the limit member 141 and the first part 126. It can be understood that the upper and lower surfaces of the gasket 142 are both planes. By setting the gasket 142 between the limit member 141 and the first part 126, that is, matching the plane of the gasket 142 with the first part 126, the flatness of the assembly position of the limit assembly 140 and the fan blade 122 is further improved, preventing the fan blade 122 from shaking during rotation, thereby effectively reducing the friction between the fan blade 122 and the mounting wall 112.

[0119] Optionally, the limiting member 141 includes a retaining spring.

[0120] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, optionally, a side of the fan blade 122 facing away from the mounting wall 112 is a second side 127, and the fan blade 122 is provided with an axial hole 128. Along the axial direction of the fan blade 122, the axial hole 128 passes through the first side 123 and the second side 127, and the second end of the connecting shaft 130 passes through the axial hole 128; the air fryer 100 also includes a connecting member 160, which is connected to the part of the second end of the connecting shaft 130 that passes through the axial hole 128.

[0121] In this embodiment, it is defined that the air fryer 100 also includes a connecting piece 160. Specifically, a side surface of the fan blade 122 facing away from the mounting wall 112 is a second surface 127. That is, along the axial direction of the fan blade 122, the first surface 123 and the second surface 127 are respectively located on both sides of the fan blade 122, that is, the first surface 123 is the upper surface, and the second surface 127 is the lower surface.

[0122] The fan blade 122 is provided with an axial hole 128, and the axial hole 128 penetrates the first surface 123 and the second surface 127 along the axial direction of the fan blade 122, that is, the axial hole 128 is a through hole. Optionally, the axial hole 128 is a D-shaped through hole, so that the connecting shaft 130 can drive the fan blade 122 to rotate under the drive of the driving member 121 while realizing the assembly connection between the connecting shaft 130 and the fan blade 122.

[0123] The second end of the connecting shaft 130 passes through the axial hole 128, and the connecting piece 160 is connected to the portion of the connecting shaft 130 that passes through the axial hole 128. That is to say, along the axial direction of the fan blade 122, the limiting assembly 140 and the connecting piece 160 are respectively located on opposite sides of the fan blade 122 to limit the fan blade 122 in the axial direction of the fan blade 122, thereby preventing the fan blade 122 from axially moving relative to the connecting shaft 130, improving the installation stability and reliability of the fan blade 122, and further preventing the fan blade 122 from rubbing against the mounting wall 112 due to shaking during rotation, thereby further extending the service life of the air fryer 100 and reducing the noise generated during the operation of the air fryer 100.

[0124] Optionally, the portion of the second end of the connecting shaft 130 that passes through the shaft hole 128 is provided with an external thread, and the connecting member 160 is provided with an internal thread. The connecting member 160 and the connecting shaft 130 are threadedly matched to achieve reliable assembly between the fan blade 122, the connecting shaft 130 and the connecting member 160.

[0125] like Figure 5 As shown, in some embodiments, optionally, the second surface 127 includes a planar portion 129 , and along the radial direction of the wind blade 122 , the planar portion 129 is located at the outer periphery of the shaft hole 128 , and at least a portion of the connecting member 160 is located on the planar portion 129 .

[0126] In this embodiment, it is defined that the second surface 127 includes a planar portion 129. Specifically, along the radial direction of the fan blade 122, the planar portion 129 is located on the outer peripheral side of the shaft hole 128, and at least a portion of the connecting member 160 is located on the planar portion 129. The flatness of the assembly position of the connecting member 160 and the fan blade 122 can be improved, and the unevenness of the fan blade 122 after assembly can be reduced, further reducing the shaking of the fan blade 122 during rotation, avoiding friction between the fan blade 122 and the mounting wall 112 during rotation, extending the service life of the air fryer 100, and reducing the noise generated by the air fryer 100 during operation.

[0127] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, optionally, the fan blade 122 includes an impeller 170 and a plurality of blades 180, wherein the impeller 170 is connected to the driving member 121, and the side of the impeller 170 facing the mounting wall 112 is a first surface 123, and the plurality of blades 180 are arranged along the circumference of the impeller 170, and the plurality of blades 180 are spaced apart on the side of the impeller 170 away from the mounting wall 112.

[0128] In this embodiment, the fan blade 122 is defined to include an impeller 170 and a plurality of blades 180. Specifically, the impeller 170 is connected to the driving member 121, and the plurality of blades 180 are arranged at intervals along the circumference of the impeller 170 on a side of the impeller 170 that is away from the mounting wall 112. That is, under the drive of the driving member 121, the impeller 170 can drive the plurality of blades 180 to rotate in the cooking cavity 111.

[0129] It is understandable that the impeller 170 is provided with an axial hole 128 , that is, the connecting shaft 130 passes through the axial hole 128 and is connected to the impeller 170 .

[0130] Optionally, the plurality of blades 180 and the impeller 170 are an integrated structure. It is understood that the integrated structure has good mechanical properties, and thus can improve the connection strength between the plurality of blades 180 and the impeller 170. In addition, the integrated structure also facilitates the processing and production of the fan blades 122, reduces the manufacturing difficulty of the fan blades 122, and is conducive to reducing the production cost of the air fryer 100.

[0131] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the hot air device 120 further includes an electromagnetic component 190, which is disposed on the pot body 110 and is arranged opposite to the fan blade 122; wherein at least a portion of the fan blade 122 has magnetic conductivity.

[0132] In this embodiment, it is defined that the hot air device 120 also includes an electromagnetic component 190. Specifically, the electromagnetic component 190 is disposed on the pot body 110, and the electromagnetic component 190 is opposite to the fan blade 122, wherein at least a portion of the fan blade 122 has magnetic conductivity. That is to say, when the electromagnetic component 190 is powered on, at least a portion of the fan blade 122 having magnetic conductivity can generate heat, thereby heating the surrounding air. At the same time, under the drive of the driving component 121, the fan blade 122 rotates in the cooking cavity 111, and takes away the heat to form a hot air flow, dissipating the heat generated by the fan blade 122. At the same time, the hot air flow circulates in the cooking cavity 111 to achieve heating and cooking of the food to be heated in the cooking cavity 111.

[0133] Specifically, the electromagnetic element 190 can generate an alternating magnetic field when powered on, and under the action of the alternating magnetic field, the fan blades 122 with magnetic conductivity can generate heat. Through the interaction between the electromagnetic element 190 and the fan blades 122 with magnetic conductivity, the temperature of the fan blades 122 can be rapidly increased in a short time, and at the same time, when the fan blades 122 rotate, hot air is rapidly generated in the cooking cavity 111.

[0134] It is understandable that since the air fryer 100 uses electromagnetically driven fan blades 122 to generate heat to achieve heating and cooking of the food in the cooking cavity 111, in order to ensure the heating power, the size of the fan blades 122 is generally larger.

[0135] By setting the height of the middle position of the first surface 123 higher and the height of the edge position of the first surface 123 relatively lower, the distance between the edge position of the fan blade 122 and the mounting wall 112 is increased, so that when the fan blade 122 rotates in the cooking cavity 111, the friction between the edge position of the fan blade 122 and the mounting wall 112 can be effectively avoided, thereby avoiding the wear caused by the friction, and extending the service life of the fan blade 122 and the air fryer 100. In addition, the problem of noise caused by friction between the fan blade 122 and the mounting wall 112 can be avoided, thereby improving the user experience of the air fryer 100.

[0136] Optionally, the electromagnetic component 190 is located between the fan blade 122 and the driving component 121, that is, the driving component 121, the electromagnetic component 190 and the fan blade 122 are arranged along the height direction of the pot body 110, so that while the fan blade 122 is driven by electromagnetics to generate heat and a hot air flow is formed under the rotation of the fan blade 122, the structural layout of the air fryer 100 is optimized, the heat dissipation layout of the driving component 121 and the electromagnetic component 190 is facilitated, the space utilization rate of the air fryer 100 is improved, and it is conducive to the miniaturization of the air fryer 100 and the stable operation of the air fryer 100 is ensured.

[0137] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, optionally, the pot body 110 is provided with a heat insulating member 113 , the heat insulating member 113 is located between the electromagnetic member 190 and the fan blade 122 , and the heat insulating member 113 is located on a side of the cooking cavity 111 including a mounting wall 112 .

[0138] In this embodiment, the pot body 110 is defined to be provided with a heat insulating member 113. Specifically, the heat insulating member 113 is located on a side of the cooking cavity 111 and includes a mounting wall 112. That is to say, increasing the distance between the edge of the fan blade 122 and the mounting wall 112 actually increases the distance between the edge of the fan blade 122 and the heat insulating member 113, so that when the fan blade 122 rotates in the cooking cavity 111, friction between the edge of the fan blade 122 and the heat insulating member 113 can be effectively avoided, thereby avoiding wear caused by friction and extending the service life of the fan blade 122 and the air fryer 100. Moreover, the problem of noise caused by friction between the fan blade 122 and the heat insulating member 113 can be avoided, thereby improving the user experience of the air fryer 100.

[0139] The heat insulating member 113 is located between the electromagnetic member 190 and the fan blade 122. When the electromagnetic member 190 is energized, the fan blade 122 can generate heat. At the same time, the heat generated by the fan blade 122 is taken away by the rotation of the fan blade 122, so that the surrounding heated air forms a hot air flow, and the hot air flow is used to heat and cook the food.

[0140] By setting a heat insulating member 113 between the electromagnetic member 190 and the fan blade 122, the heat generated by the fan blade 122 can be effectively reduced from being transferred to the electromagnetic member 190, thereby avoiding excessive temperature rise of the electromagnetic member 190 due to the heat generated by the fan blade 122, thereby affecting the performance of the electromagnetic member 190 and extending the service life of the electromagnetic member 190.

[0141] Optionally, the thermal insulation member 113 includes but is not limited to a microcrystalline board, glass, and the like.

[0142] like Figure 1 As shown, in some embodiments, optionally, the pot body 110 is also provided with a heat dissipation channel 114, an air inlet 115 and an air outlet 116, the air inlet 115 and the air outlet 116 are respectively connected to the heat dissipation channel 114, and the electromagnetic component 190 and the driving component 121 are located in the heat dissipation channel 114.

[0143] In this embodiment, it is defined that the pot body 110 is further provided with a heat dissipation channel 114 , an air inlet 115 and an air outlet 116 . Specifically, the air inlet 115 and the air outlet 116 are respectively connected to the heat dissipation channel 114 .

[0144] It is understandable that during the operation of the air fryer 100, the electromagnetic component 190 and the driving component 121 will generate heat. If the heat is not dissipated in time, it is easy to cause the electromagnetic component 190 or the driving component 121 to malfunction, reduce the service life of the electromagnetic component 190 and the driving component 121, and increase the maintenance cost of the air fryer 100.

[0145] By arranging the electromagnetic component 190 and the driving component 121 in the heat dissipation channel 114, air or airflow enters the heat dissipation channel 114 from the air inlet 115 and can flow out through the air outlet 116. In this process, the heat on the surface of the electromagnetic component 190 and the driving component 121 is taken away, thereby dissipating the heat of the electromagnetic component 190 and the driving component 121, reducing the probability of failure of the electromagnetic component 190 and the driving component 121, extending the service life of the air fryer 100, and reducing the maintenance cost of the air fryer 100.

[0146] Optionally, the air fryer 100 also includes a heat dissipation fan. Specifically, the heat dissipation fan is arranged on the pot body 110, and the heat dissipation fan is connected to the air inlet 115. It can be understood that when the heat dissipation fan is started, it can drive the surrounding air to flow to form an airflow, and the airflow can enter the heat dissipation channel 114 through the air inlet 115, take away the heat from the surface of the driving component 121, the electromagnetic component 190 and other electrical components, and flow out from the air outlet 116, thereby dissipating the heat of the driving component 121, the electromagnetic component 190 and other electrical components located in the heat dissipation channel 114.

[0147] By providing a heat dissipation fan, the air flow speed in the heat dissipation channel 114 can be accelerated, and the heat dissipation effect of the driving component 121, the electromagnetic component 190 and other electrical components in the heat dissipation channel 114 can be improved, thereby ensuring that the air fryer 100 can work reliably, extending the service life of the air fryer 100, reducing the maintenance cost of the air fryer 100, and improving the user experience.

[0148] Optionally, the air fryer 100 further includes an electric control board, specifically, the electric control board is connected to the driving member 121 and the electromagnetic member 190. It can be understood that the electric control board is electrically connected to the electromagnetic member 190 to supply power to the electromagnetic member 190, so that the electromagnetic member 190 can generate an alternating magnetic field to heat the fan blade 122. In addition, the electric control board is also connected to the driving member 121 to control whether the driving member 121 drives the fan blade 122 to rotate.

[0149] The electric control board is arranged in the heat dissipation channel 114, so that when air or airflow enters the heat dissipation channel 114 from the air inlet 115 and flows out through the air outlet 116, in addition to taking away the heat on the surface of the driving component 121 and the electromagnetic component 190, it can also take away the heat on the surface of the electric control board, thereby achieving heat dissipation of the electric control board and further extending the service life of the air fryer 100.

[0150] Optionally, the pot body 110 further includes an outer shell and an inner cover, the inner cover is located on the inner side of the outer shell, the heat insulating member 113 is located on the side of the inner cover close to the cooking cavity 111, and the inner cover and the heat insulating member 113 enclose a first heat dissipation chamber for dissipating heat from the electromagnetic member 190, and the outer shell and the inner cover enclose a second heat dissipation chamber for dissipating heat from the driving member 121 and the electric control board. That is, the heat dissipation channel 114 includes a first heat dissipation chamber and a second heat dissipation chamber.

[0151] In a specific embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the blade (wind blade 122) is configured to consist of a plane area (first part 126) and an inclined / curved area (first surface 123), and a sink (avoidance groove 150) is provided on the insulation board (insulation member 113).

[0152] The motor (driving member 121) is fixed on the inner cover, and the motor shaft (connecting shaft 130) passes through the inner cover, the electromagnetic coil (electromagnetic member 190), the heat insulation board, and the blades in sequence. A retaining spring (limiting member 141) is arranged on the motor shaft, and a washer (gasket 142) is arranged between the retaining spring and the blades.

[0153] A sink is provided at the center of the heat insulation board corresponding to the gasket to prevent the gasket from being higher than the blade, resulting in the gasket being too close to the heat insulation board and causing the gasket to rub against the heat insulation board.

[0154] There is an axial hole 128 in the center of the blade, and there are multiple wind blades (blade 180) on the surface of the blade to drive the wind. A plane area is set in the middle area of ​​the blade, and then an inclined surface or a curved surface is made from the plane in the radial direction outward. In the assembly drawing, the point close to the center is the high point, and the point close to the outer diameter is the low point. The distance between the high point and the insulation board is smaller than the distance between the low point and the insulation board. The height difference between the two (i.e., the height difference between the high point and the low point in the vertical direction) is generally set between 0.5mm and 3mm. If it is too small, it will not reduce friction. If it is too large, it will affect the distance between the blade and the electromagnetic coil and thus affect the power. The plane area on the blade is used to match the gasket to reduce the unevenness of the blade after assembly and the shaking after rotation.

[0155] In addition, a heating fan blade (fan blade 122) is installed on the motor, and a heat insulation plate separates the electromagnetic coil and the fan blade 122. The heat insulation plate and the inner cover form a cavity (heat dissipation channel 114), in which the electromagnetic coil is installed, and a heat dissipation duct for the electromagnetic coil is formed. The electromagnetic coil drives the heating blade to generate heat, and the motor drives the heating blade to rotate, thereby forming a hot air flow in the barrel (cooking cavity 111) to start the baking effect.

[0156] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0157] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0158] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air fryer, characterized in that: include: A pot body, wherein the pot body is provided with a cooking cavity and a mounting wall located in the cooking cavity; a hot air device, arranged on the pot body, for delivering hot air to the cooking cavity, the hot air device comprising a connected driving member and a fan blade, the fan blade is located in the cooking cavity, and at least a part of the mounting wall is located between the fan blade and the driving member; The side surface of the fan blade facing the mounting wall is a first surface, and along the axial direction of the fan blade, the distance between the outer edge of the first surface and the mounting wall is greater than the distance between the center of the first surface and the mounting wall.

2. The air fryer according to claim 1, characterized in that: A distance h1 between the outer edge of the first surface and the installation wall and a distance h2 between the center of the first surface and the installation wall satisfy 0.5 mm ≤ h1 - h2 ≤ 3 mm.

3. The air fryer according to claim 1, characterized in that: The installation wall is provided with an avoidance groove, the avoidance groove is communicated with the cooking cavity, and the notch of the avoidance groove faces the first surface.

4. The air fryer according to claim 1, characterized in that: At least a portion of the first surface is configured as an inclined surface or a curved surface.

5. The air fryer according to any one of claims 1 to 4, characterized in that: The first surface includes a first portion and a second portion, and along the radial direction of the wind blade, the second portion is located outside the first portion; The first part is configured as a plane, and the second part is configured as an inclined surface or an arc surface.

6. The air fryer according to claim 5, characterized in that: The connection between the first part and the second part has a smooth transition.

7. The air fryer according to claim 5, characterized in that: The air fryer also includes: A connecting shaft, wherein a first end of the connecting shaft is connected to the driving member, and a second end of the connecting shaft passes through the mounting wall and is connected to the fan blade; A limiting assembly is connected to the second end of the connecting shaft and is at least partially located on the first portion.

8. The air fryer according to claim 7, characterized in that: The second end of the connecting shaft is provided with a limiting groove; The limiting component comprises: A limiting member, a portion of which is inserted into the limiting groove; A gasket, at least a portion of which is disposed between the limiting member and the first portion.

9. The air fryer according to claim 7, characterized in that: A side of the fan blade facing away from the mounting wall is a second side, and the fan blade is provided with an axial hole, and along the axial direction of the fan blade, the axial hole passes through the first side and the second side, and the second end of the connecting shaft passes through the axial hole; The air fryer also includes: A connecting piece is connected to the portion of the second end of the connecting shaft that passes through the shaft hole.

10. The air fryer according to claim 9, characterized in that: The second surface includes a plane portion, and along the radial direction of the fan blade, the plane portion is located at the outer periphery of the shaft hole, and at least a portion of the connecting member is located on the plane portion.

11. The air fryer according to any one of claims 1 to 4, characterized in that: The hot air device also includes: An electromagnetic component is arranged on the pot body and is arranged opposite to the fan blade; Wherein, at least a portion of the fan blade has magnetic conductivity.

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