Air fryer

Abstract

The utility model discloses an air fryer which comprises a shell, an upper heating assembly and a lower heating assembly, the upper heating assembly and the lower heating assembly are installed at the top and the bottom of the shell respectively, a cooking cavity is formed by the shell, the upper heating assembly and the lower heating assembly in a surrounding mode, and a visible window is formed in the top of the shell. The visual window is located beside the upper heating assembly and extends to the inner top wall face of the cooking cavity from the outer surface of the shell, and on a projection face perpendicular to the height direction of the shell, the central point of the projection of the lower heating assembly is located on the side, facing the projection of the visual window, of the central point of the projection of the bottom wall face of the cooking cavity. The air fryer provided by the utility model has the advantages that the food cooking uniformity is good, and the half-cooked phenomenon is not easy to occur.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliances technology, specifically to an air fryer. Background Technology

[0002] In order to observe the cooking status of food during the cooking process, air fryers in related technologies usually have a viewing window set at the top front of the air fryer. However, the setting of the viewing window will cause the upper heating element to be placed at the rear. In this case, the hot air generated by the upper heating element is not easy to reach the front area of ​​the inner pot cavity during the cooking process, resulting in poor uniformity of food cooking and the defect that the food is easy to be undercooked. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an air fryer that has the advantages of good cooking uniformity and less likelihood of undercooked food.

[0005] The air fryer of this utility model embodiment includes a shell, an upper heating assembly, and a lower heating assembly. The upper heating assembly and the lower heating assembly are respectively installed on the top and bottom of the shell. The shell, the upper heating assembly, and the lower heating assembly surround a formed cooking cavity. A viewing window is provided on the top of the shell. The viewing window is located next to the upper heating assembly and extends from the outer surface of the shell to the inner top wall of the cooking cavity. On a projection plane perpendicular to the height direction of the shell, the center point of the projection of the lower heating assembly is located on the side of the projection of the bottom wall of the cooking cavity toward the projection of the viewing window.

[0006] According to an embodiment of the present invention, the air fryer, by providing a viewing window beside the upper heating component, divides the cooking cavity into a first zone opposite to the upper heating component and a second zone opposite to the viewing window in the height direction of the shell. In this configuration, the upper heating component is more efficient at heating the first zone than at heating the second zone. On a projection plane perpendicular to the height direction of the shell, by positioning the center point of the projection of the lower heating component on the side of the projection of the bottom wall of the cooking cavity towards the viewing window, the lower heating component is offset towards the second zone. In this configuration, the lower heating component is more efficient at heating the second zone than at heating the first zone. Thus, with the cooperation of the upper and lower heating components, the heating rates of the first and second zones can be made more consistent. This allows for observation of the food's cooking state through the viewing window while effectively ensuring uniform cooking of the food, reducing the likelihood of undercooked food.

[0007] Optionally, on a projection plane perpendicular to the height direction of the housing, the distance between the center point of the projection of the lower heating assembly and the center point of the projection of the bottom wall of the cooking cavity is d, where 10mm≤d≤20mm.

[0008] The air fryer of this utility model embodiment, by setting 10mm≤d≤20mm, avoids the situation where the offset distance between the lower heating component and the center of the cooking cavity is too small, resulting in the heating rate of the second zone still being significantly lower than that of the first zone. On the other hand, it avoids the situation where the offset distance between the lower heating component and the center of the cooking cavity is too large, resulting in the heating rate of the second zone significantly exceeding that of the first zone. This better ensures the uniformity of food cooking in the air fryer.

[0009] Optionally, the upper heating assembly includes a drive motor and a fan. The drive motor is mounted on the housing, and the fan is coaxially connected to the shaft of the drive motor. The fan is located on the side of the drive motor facing the cooking cavity, and one end of the fan adjacent to the cooking cavity is tilted towards the side closer to the viewing window.

[0010] The air fryer of this utility model embodiment is designed so that the drive motor and fan are tilted towards the second zone. When the fan is driven by the drive motor to rotate, it can blow hot air from the first zone to the second zone at an angle. This makes the heating efficiency of the upper heating component in heating the first zone closer to that in heating the second zone. At this time, the lower heating component does not need to be offset by too much distance to effectively ensure the uniformity of food cooking in the air fryer.

[0011] Optionally, the housing includes a partition, the base of the drive motor is mounted on the side of the partition away from the cooking cavity, the fan is located on the side of the partition facing the cooking cavity, the shaft axis of the drive motor is perpendicular to the partition, and the end of the partition adjacent to the viewing window is higher than the end of the partition away from the viewing window.

[0012] The air fryer of this utility model, by designing a partition on the shell at an angle to the horizontal, ensures the skew angle of the drive motor and fan when the drive motor is mounted on the partition, resulting in high installation efficiency of the upper heating component within the shell. Furthermore, mounting the drive motor on the side of the partition away from the fan and cooking cavity provides good protection for the drive motor, leading to longer performance and lifespan.

[0013] Optionally, the partition forms an angle α with the height direction of the housing, wherein 82°≤α≤89°.

[0014] The air fryer of this utility model sets the angle between the partition and the shell in the height direction to be between 82° and 89°, that is, sets the fan deflection angle to be between 1° and 8°. On the one hand, this avoids the upper heating component deflection angle being too large, which would occupy too much space in the horizontal direction of the shell and affect the size of the viewing window. On the other hand, it avoids the upper heating component deflection angle being too small, which would not significantly improve the heating efficiency of the second zone.

[0015] Optionally, the upper heating assembly further includes an air guide shroud connected to the side of the partition facing the cooking cavity. The air guide shroud surrounds and forms an air guide channel communicating with the cooking cavity. The fan is located within the air guide channel, and the lower end of the air guide channel is tilted relative to the upper end toward the side closer to the viewing window.

[0016] In this embodiment of the air fryer, the air guide channel also guides the flow of hot air, ensuring that the hot air is blown to the second zone more reliably, thereby better ensuring the uniformity of food cooking in the air fryer.

[0017] Optionally, the upper heating assembly further includes a first heating element, which is connected to the air guide shroud and located on the side of the fan facing the cooking cavity.

[0018] The air fryer of this utility model has a first heating element set on the side of the fan facing the cooking chamber. The air blown out by the fan passes through the first heating element and enters the cooking chamber. During this process, the air blown out by the fan carries the heat on the first heating element directly into the cooking chamber. The hot air outlet direction is stable and reliable, and the upper heating component has high cooking efficiency for food.

[0019] Optionally, the first heating element extends circumferentially along the fan, or the first heating element extends radially around the central axis of the fan.

[0020] In this embodiment of the air fryer, the axis of the first heating tube coincides with the axis of the fan. As a result, the direction of the hot air flow formed after the fan passes through the first heating tube is closer to the axis of the fan, thereby more reliably ensuring that the hot air enters the second zone and ensuring the uniformity of the cooking of the food in the inner pot by the upper heating component.

[0021] Optionally, the lower heating assembly includes a heat-conducting plate and a second heating element. The heat-conducting plate forms part of the bottom wall surface of the cooking cavity, and the second heating element is installed on the side of the heat-conducting plate away from the cooking cavity.

[0022] In this embodiment of the air fryer, the second heating element heats up and then transfers the heat to the heat-conducting plate. The heat-conducting plate then transfers the heat to the inner pot inside the cooking cavity, thereby heating the food. In other words, the lower heating component heats the food by conducting heat. The lower heating component has a simple structure and occupies little space inside the shell.

[0023] Optionally, the housing includes a transparent panel, a viewing window frame, and a transparent plate connected in sequence. The transparent panel, the viewing window frame, and the transparent plate together constitute the viewing window. The transparent panel forms part of the outer wall surface of the housing, and the transparent plate forms part of the top wall surface of the cooking cavity.

[0024] In this embodiment of the air fryer, the viewing window frame can be formed with a viewing window opening, and the transparent panel and transparent plate respectively seal the openings at both ends of the viewing window opening. The viewing window frame ensures that the viewing window is not obstructed while also preventing the user from seeing other components inside the casing through the viewing window. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an air fryer according to an embodiment of the present utility model.

[0026] Figure 2 This is a cross-sectional view of an air fryer according to an embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional view of the air fryer according to an embodiment of the present invention, excluding the inner pot.

[0028] Figure label:

[0029] 1. Shell; 11. Viewing window; 111. Transparent panel; 112. Viewing window frame; 113. Transparent plate; 12. Partition; 2. Upper heating assembly; 21. Drive motor; 22. Fan; 23. Air guide shroud; 231. Air guide channel; 24. First heating element; 3. Lower heating assembly; 31. Heat-conducting plate; 32. Second heating element; 4. Inner pot. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following is combined Figure 1-Figure 3 This invention describes an air fryer according to an embodiment of the present invention.

[0032] The air fryer of this embodiment includes a shell 1, an upper heating assembly 2, and a lower heating assembly 3. The upper heating assembly 2 and the lower heating assembly 3 are respectively installed at the top and bottom of the shell 1. The shell 1, the upper heating assembly 2, and the lower heating assembly 3 surround a shaped cooking cavity. A viewing window 11 is provided at the top of the shell 1, located beside the upper heating assembly 2 and extending from the outer surface of the shell 1 to the inner top wall of the cooking cavity. In the direction perpendicular to the height of the shell 1 (… Figure 1 On the projection surface (up and down direction) of the cooking cavity, the center point of the projection of the lower heating component 3 is located on the side of the projection of the bottom wall of the cooking cavity towards the projection of the viewing window 11.

[0033] According to the embodiment of this utility model, the air fryer, by providing a viewing window 11 on the side of the upper heating component 2, divides the cooking cavity into a first zone opposite to the upper heating component 2 in the height direction of the shell 1 and a second zone opposite to the viewing window 11. In this case, the upper heating component 2 is more efficient at heating the first zone than at heating the second zone. On the projection plane perpendicular to the height direction of the shell 1, by setting the center point of the projection of the lower heating component 3 to the side of the projection of the bottom wall of the cooking cavity facing the projection of the viewing window 11, the lower heating component 3 is offset towards the second zone. In this case, the lower heating component 3 is more efficient at heating the second zone than at heating the first zone. Therefore, with the cooperation of the upper heating component 2 and the lower heating component 3, the heating rate of the first zone and the heating rate of the second zone can be made to be consistent. This allows for observation of the food's state during cooking through the viewing window 11, effectively ensuring the uniformity of food cooking in the air fryer and reducing the likelihood of undercooked food.

[0034] It should be noted that, such as Figure 2 As shown, the viewing window 11 is located in front of the upper heating assembly 2, and the center of the lower heating assembly 3 is offset forward relative to the center of the cooking cavity. The first area is the rear area of ​​the cooking cavity, and the second area is the front area of ​​the cooking cavity.

[0035] In some embodiments, as Figure 2 As shown, on the projection plane perpendicular to the height direction of the housing 1, the distance between the center point of the projection of the lower heating component 3 and the center point of the projection of the bottom wall of the cooking cavity is d, where 10mm≤d≤20mm.

[0036] By setting 10mm≤d≤20mm, on the one hand, it avoids the lower heating component 3 being too small off-center from the center of the cooking cavity, which would cause the heating rate of the second zone to still be significantly lower than that of the first zone. On the other hand, it avoids the lower heating component 3 being too large off-center from the center of the cooking cavity, which would cause the heating rate of the second zone to significantly exceed that of the first zone. This better ensures the uniformity of food cooking in the air fryer.

[0037] Specifically, on the projection plane perpendicular to the height direction of the housing 1, the center point of the projection of the lower heating component 3 is offset forward by 10mm, 15mm and 20mm relative to the center point of the projection of the bottom wall of the cooking cavity.

[0038] In some embodiments, as Figure 2 and Figure 3 As shown, the upper heating assembly 2 includes a drive motor 21 and a fan 22. The drive motor 21 is mounted on the housing 1. The fan 22 is coaxially connected to the shaft of the drive motor 21. The fan 22 is located on the side of the drive motor 21 facing the cooking cavity. The end of the fan 22 adjacent to the cooking cavity is tilted towards the side close to the viewing window 11.

[0039] By setting the drive motor 21 and fan 22 to be tilted towards the second zone, when the fan 22 is driven by the drive motor 21 to rotate, it can blow hot air from the first zone to the second zone at an angle. This makes the heating efficiency of the upper heating component 2 in heating the first zone closer to that in heating the second zone. At this time, the lower heating component 3 does not need to be offset by too much distance to effectively ensure the uniformity of food cooking in the air fryer.

[0040] Specifically, with the viewing window 11 located in front of the upper heating assembly 2, the lower end of the fan 22 is tilted diagonally downward and forward relative to the upper end.

[0041] In some embodiments, as Figure 2 and Figure 3 As shown, the housing 1 includes a partition 12, the base of the drive motor 21 is mounted on the side of the partition 12 away from the cooking cavity, the fan 22 is located on the side of the partition 12 facing the cooking cavity, the shaft axis of the drive motor 21 is perpendicular to the partition 12, and the end of the partition 12 near the viewing window 11 is higher than the end of the partition 12 away from the viewing window 11.

[0042] By designing a partition 12 at an angle to the horizontal on the housing 1, the drive motor 21 can be mounted on the partition 12, ensuring the tilt angle between the drive motor 21 and the fan 22, thus achieving high installation efficiency of the upper heating component 2 within the housing 1. Furthermore, mounting the drive motor 21 on the side of the partition 12 away from the fan 22 and the cooking cavity provides better protection for the drive motor 21, resulting in higher performance and a longer service life for the drive motor 21.

[0043] Specifically, the thickness of the partition 12 is consistent at all positions, the front end of the partition 12 is higher than the rear end of the partition 12, the drive motor 21 is installed above the partition 12, and the shaft of the drive motor 21 passes through the partition 12 and is coaxially connected to the fan 22.

[0044] In some embodiments, the partition 12 forms an angle α with the height direction of the housing 1, wherein 82°≤α≤89°.

[0045] By setting the angle between the partition 12 and the housing 1 in the height direction between 82° and 89°, that is, setting the deflection angle of the fan 22 between 1° and 8°, on the one hand, it avoids that the deflection angle of the upper heating component 2 is too large, which would occupy too much space in the horizontal direction of the housing 1 and affect the size of the viewing window 11; on the other hand, it avoids that the deflection angle of the upper heating component 2 is too small, which would not significantly improve the heating efficiency of the second zone.

[0046] Specifically, the angle between the partition 12 and the height direction of the housing 1 can be 82°, 86° and 89°.

[0047] In some embodiments, as Figure 2 and Figure 3 As shown, the upper heating assembly 2 also includes an air guide hood 23, which is connected to the side of the partition 12 facing the cooking cavity. The air guide hood 23 surrounds and forms an air guide channel 231 that communicates with the cooking cavity. The fan 22 is located inside the air guide channel 231, and the lower end of the air guide channel 231 is tilted relative to the upper end toward the side closer to the viewing window 11.

[0048] The air guide channel 231 also guides the flow of hot air, ensuring that the hot air blows to the second zone more reliably, thereby better ensuring the uniformity of food cooking in the air fryer.

[0049] Specifically, the air guide channel 231 extends obliquely forward from top to bottom, and the cross-sectional area of ​​the air guide channel 231 gradually increases from bottom to top, that is, the air guide cover 23 is roughly a trumpet structure with an opening at the bottom.

[0050] It should be noted that a protective cover is also connected to the lower end of the air guide cover 23. The protective cover separates the air guide channel 231 from the cooking cavity, thereby preventing the user from contacting the first heating element 24 and the fan 22 inside the air guide channel 231.

[0051] In some embodiments, the upper heating assembly 2 further includes a first heating element 24, which is connected to the air guide shroud 23 and located on the side of the fan 22 facing the cooking cavity.

[0052] By placing the first heating element 24 on the side of the fan 22 facing the cooking cavity, the air blown out by the fan 22 will pass through the first heating element 24 and enter the cooking cavity. During this process, the air blown out by the fan 22 will directly carry the heat on the first heating element 24 into the cooking cavity. The hot air outlet direction is stable and reliable, and the upper heating component 2 has high cooking efficiency for food.

[0053] It should be noted that the first heating element 24 can also be located around the fan 22.

[0054] In some embodiments, the first heating element 24 extends circumferentially along the fan 22, or the first heating element 24 extends radially spirally around the central axis of the fan 22.

[0055] The axis of the first heating tube 24 coincides with the axis of the fan 22. As a result, the direction of the hot air flow formed after the fan 22 passes through the first heating tube 24 is closer to the axis of the fan 22, thereby more reliably ensuring that the hot air enters the second zone and ensuring the uniformity of the cooking of the food in the inner pot 4 by the upper heating component 2.

[0056] Specifically, such as Figure 2 and Figure 3 As shown, the first heating tube 24 extends circumferentially along the fan 22. On the projection plane perpendicular to the axis of the fan 22, the diameter of the outer tangent circle of the projected outer contour of the fan 22 is less than or equal to the inner diameter of the projected outer contour of the first heating tube 24.

[0057] In some embodiments, the lower heating assembly 3 includes a heat-conducting plate 31 and a second heating tube 32. The heat-conducting plate 31 forms part of the bottom wall surface of the cooking cavity, and the second heating tube 32 is installed on the side of the heat-conducting plate 31 away from the cooking cavity.

[0058] After the second heating element 32 heats up, it transfers heat to the heat conduction plate 31. The heat conduction plate 31 then transfers heat to the inner pot 4 inside the cooking cavity, thereby heating the food. In other words, the lower heating component 3 heats the food by conducting heat. The lower heating component 3 has a simple structure and occupies little space inside the shell 1.

[0059] like Figure 2 and Figure 3 As shown, the shell 1 includes an inner liner bottom plate, the upper surface of which is provided with a mounting groove. A heat-conducting plate 31 is fitted into the mounting groove and connected to the inner liner bottom plate. A second heating element 32 is sandwiched between the heat-conducting plate 31 and the bottom surface of the mounting groove. The heat-conducting plate 31 is a circular plate, and the second heating element 32 extends circumferentially along the heat-conducting plate 31.

[0060] In some embodiments, the housing 1 includes a perspective panel 111, a viewing window frame 112, and a perspective plate 113 connected in sequence. The perspective panel 111, the viewing window frame 112, and the perspective plate 113 together constitute a viewing window 11. The perspective panel 111 forms part of the outer wall surface of the housing 1, and the perspective plate 113 forms part of the top wall surface of the cooking cavity.

[0061] The viewing window frame 112 can be formed into a viewing window through hole, and the transparent panel 111 and the transparent plate 113 respectively block the openings at both ends of the viewing window through hole. In this way, the viewing window frame 112 ensures that the viewing window 11 is not obstructed, while also preventing the user from seeing other components inside the housing 1 through the viewing window 11.

[0062] Specifically, such as Figure 2 and Figure 3As shown, the transparent panel 113 is made of transparent glass, and the transparent panel 111 can be made of transparent plastic. The transparent panel 113 blocks the upper opening of the cooking cavity, and the transparent panel 111 forms part of the front side of the shell 1.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0067] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An air fryer, characterized in that, The device includes a housing (1), an upper heating assembly (2), and a lower heating assembly (3). The upper heating assembly (2) and the lower heating assembly (3) are respectively installed on the top and bottom of the housing (1). The housing (1), the upper heating assembly (2), and the lower heating assembly (3) surround a shaped cooking cavity. A viewing window (11) is provided on the top of the housing (1). The viewing window (11) is located next to the upper heating assembly (2) and extends from the outer surface of the housing (1) to the inner top wall of the cooking cavity. On a projection plane perpendicular to the height direction of the housing (1), the center point of the projection of the lower heating assembly (3) is located on the side of the projection of the center point of the bottom wall of the cooking cavity toward the projection of the viewing window (11).

2. The air fryer according to claim 1, characterized in that, On the projection plane perpendicular to the height direction of the housing (1), the distance between the center point of the projection of the lower heating component (3) and the center point of the projection of the bottom wall of the cooking cavity is d, where 10mm≤d≤20mm.

3. The air fryer according to claim 1, characterized in that, The upper heating assembly (2) includes a drive motor (21) and a fan (22). The drive motor (21) is mounted on the housing (1). The fan (22) is coaxially connected to the shaft of the drive motor (21). The fan (22) is located on the side of the drive motor (21) facing the cooking cavity. The end of the fan (22) adjacent to the cooking cavity is tilted towards the side close to the viewing window (11).

4. The air fryer according to claim 3, characterized in that, The housing (1) includes a partition (12), the base of the drive motor (21) is mounted on the side of the partition (12) away from the cooking cavity, the fan (22) is located on the side of the partition (12) facing the cooking cavity, the shaft axis of the drive motor (21) is perpendicular to the partition (12), and the end of the partition (12) adjacent to the viewing window (11) is higher than the end of the partition (12) away from the viewing window (11).

5. The air fryer according to claim 4, characterized in that, The partition (12) forms an angle α with the height direction of the shell (1), wherein 82°≤a≤89°.

6. The air fryer according to claim 4, characterized in that, The upper heating assembly (2) also includes an air guide hood (23), which is connected to the side of the partition (12) facing the cooking cavity. The air guide hood (23) surrounds and forms an air guide channel (231) communicating with the cooking cavity. The fan (22) is located inside the air guide channel (231), and the lower end of the air guide channel (231) is tilted relative to the upper end toward the side closer to the viewing window (11).

7. The air fryer according to claim 6, characterized in that, The upper heating assembly (2) further includes a first heating element (24), which is connected to the air guide shroud (23) and located on the side of the fan (22) facing the cooking cavity.

8. The air fryer according to claim 7, characterized in that, The first heating element (24) extends circumferentially along the fan (22), or the first heating element (24) extends radially spirally around the central axis of the fan (22).

9. The air fryer according to claim 1, characterized in that, The lower heating assembly (3) includes a heat-conducting plate (31) and a second heating tube (32). The heat-conducting plate (31) forms part of the bottom wall surface of the cooking cavity, and the second heating tube (32) is installed on the side of the heat-conducting plate (31) away from the cooking cavity.

10. The air fryer according to claim 1, characterized in that, The housing (1) includes a perspective panel (111), a viewing window frame (112), and a perspective plate (113) connected in sequence. The perspective panel (111), the viewing window frame (112), and the perspective plate (113) together constitute the viewing window (11). The perspective panel (111) forms part of the outer wall surface of the housing (1), and the perspective plate (113) forms part of the top wall surface of the cooking cavity.

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