Hot air component of air fryer and air fryer

Abstract

The utility model discloses a hot air part of an air fryer and the air fryer, a hot air cavity is formed in the air fryer, the hot air part is arranged in the hot air cavity, and the hot air part comprises a fan suitable for driving air in the hot air cavity to form heating airflow; the heating assembly comprises a heating pipe and an auxiliary heating piece, the auxiliary heating piece is connected to the peripheral wall of the heating pipe and protrudes outwards in the radial direction, and the heating pipe and the outer surface of the auxiliary heating piece jointly define a heating face. Therefore, by arranging the heating pipe and the auxiliary heating piece, the heating surface can be jointly defined, the area of the heating surface can be increased, the heat radiation efficiency of the heating assembly is improved, and the overall heating efficiency of the hot air component is improved.

Description

Technical Field

[0001] The utility model relates to the field of air fryers, in particular to a hot air component of an air fryer and an air fryer with the hot air component. Background Art

[0002] In the prior art, an air fryer is provided with a hot air chamber connected to a cooking chamber, wherein a hot air component is provided in the hot air chamber, and the hot air component includes a heating tube and a fan, wherein the fan is used to drive the airflow to form a heated airflow, and the heating tube is used to heat the heated airflow, and the heated heated airflow can flow into the cooking chamber for heating, and the heating tube can also heat the cooking chamber by heat radiation, but since the exposed area of ​​the heating element is small, the efficiency of heat radiation is low, which will affect the cooking efficiency, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a hot air component of an air fryer, which can increase the area of ​​the heating surface, improve the heat radiation efficiency of the heating component, and help improve the overall heating efficiency of the hot air component.

[0004] According to the hot air component of the air fryer in the embodiment of the utility model, the air fryer is formed with a hot air cavity, and the hot air component is arranged in the hot air cavity, and the hot air component comprises: a fan, the fan is suitable for driving the air in the hot air cavity to form a heated airflow; a heating component, the heating component comprises a heating tube and an auxiliary heating element, the auxiliary heating element is connected to the outer peripheral wall of the heating tube and protrudes radially outward, and the outer surface of the heating tube and the auxiliary heating element jointly defines a heating surface.

[0005] According to the hot air component of the air fryer in the embodiment of the utility model, the heating surface is defined by arranging a heating tube and an auxiliary heating element, so that the area of ​​the heating surface can be increased, the heat radiation efficiency of the heating component is improved, and the overall heating efficiency of the hot air component is improved.

[0006] According to the hot air component of the air fryer in some embodiments of the present invention, there are multiple auxiliary heating elements, and the multiple auxiliary heating elements are distributed at intervals along the extension direction of the heating tube.

[0007] According to the hot air component of the air fryer in some embodiments of the utility model, the auxiliary heating element includes a sleeve portion and at least one heat dissipation portion, the sleeve portion is sleeved on the outside of the heating tube, and the heat dissipation portion is connected to the outer peripheral wall of the sleeve portion and protrudes radially outward.

[0008] According to the hot air component of the air fryer in some embodiments of the present invention, the auxiliary heating element further includes a transition portion, and the transition portion is connected between the heat dissipation portion and the sleeve portion.

[0009] According to the hot air component of the air fryer in some embodiments of the present invention, the dimension of the sleeve portion extending along the axial direction is L1, and the distance between two adjacent auxiliary heating elements is L2, which satisfies: 1mm≤L2-L1≤3mm.

[0010] According to the hot air component of the air fryer in some embodiments of the utility model, the heating tube is coiled and includes a plurality of surrounding parts arranged in this manner from the inside to the outside, each of the surrounding parts is provided with a plurality of the auxiliary heating elements, and the distance between any two adjacent auxiliary heating elements on the same surrounding part gradually decreases in the direction from the inside to the outside.

[0011] According to the hot air component of the air fryer in some embodiments of the present invention, the auxiliary heating element is constructed as a heat dissipation fin, and the heat dissipation fin is spirally arranged in the extension direction of the heating tube.

[0012] According to the hot air component of the air fryer in some embodiments of the utility model, the fan is located on one side of the heating tube and is arranged opposite to the heating tube, the minimum distance between the fan and the heating tube is L3, and the protruding dimension of the auxiliary heating element along the radial direction of the heating tube is L4, satisfying: 5mm≤L3-L4≤10mm.

[0013] According to the hot air component of the air fryer in some embodiments of the present invention, the auxiliary heating element is detachably connected to the heating tube.

[0014] According to the hot air component of the air fryer in some embodiments of the present invention, the auxiliary heating element is configured to be inclined in the radial direction of the heating tube along the extending direction of the heating tube.

[0015] According to the hot air component of the air fryer in some embodiments of the present invention, projections of at least two adjacent auxiliary heating elements in the radial direction of the heating tube are connected or overlapped with each other.

[0016] According to some embodiments of the hot air component of the air fryer of the present invention, it is characterized in that the auxiliary heating element is constructed to be inclined along the air outlet or return air direction of the fan in the radial direction of the heating tube to guide the hot air output by the fan into the cooking cavity circulation duct of the air fryer.

[0017] The utility model also provides an air fryer.

[0018] The air fryer according to the embodiment of the utility model comprises: a casing and a hot air component of the air fryer according to any of the above embodiments, wherein the casing is formed with a hot air cavity.

[0019] According to the air fryer of the embodiment of the utility model, the heating surface is defined by arranging a heating tube and an auxiliary heating element, so that the area of ​​the heating surface can be increased, the heat radiation efficiency of the heating component is improved, the overall heating efficiency of the hot air component is improved, and the overall performance of the air fryer is improved.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 is a cross-sectional view of an air fryer according to an embodiment of the utility model;

[0023] Figure 2 is a schematic diagram of a heating assembly according to an embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 is a schematic diagram of a heating assembly according to another embodiment of the utility model;

[0026] Figure 5 It is a cross-sectional view of an auxiliary heating element according to another embodiment of the utility model.

[0027] Reference numerals:

[0028] Air fryer 1000,

[0029] Hot air component 100, housing 200, hot air cavity 201, cooking cavity 202,

[0030] Fan 1, heating assembly 2, heating tube 21, surrounding portion 211, connecting portion 212,

[0031] Auxiliary heating element 22 , sleeve portion 221 , heat dissipation portion 222 , transition portion 223 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] Hereinafter, a hot air component 100 of an air fryer according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0034] It should be noted that if Figure 1 As shown, the air fryer 1000 includes a casing 200, in which a hot air cavity 201 and a cooking cavity 202 are formed, food is placed in the cooking cavity 202, and a hot air component 100 is arranged in the hot air cavity 201, and the hot air component 100 is used to heat the food in the cooking cavity 202.

[0035] like Figure 1-Figure 5 As shown, the hot air component 100 of the air fryer according to the embodiment of the utility model includes: a fan 1 and a heating assembly 2, the fan 1 is suitable for driving the air in the hot air chamber 201 to form a heated airflow; the heating assembly 2 includes a heating tube 21 and an auxiliary heating element 22, the auxiliary heating element 22 is connected to the outer peripheral wall of the heating tube 21 and protrudes radially outward, and the outer surfaces of the heating tube 21 and the auxiliary heating element 22 jointly define a heating surface.

[0036] Thus, the area of ​​the heating surface can be increased, the heat radiation efficiency of the heating assembly 2 is improved, and the overall heating efficiency of the hot air component 100 is improved.

[0037] For example, refer to Figure 1-Figure 2 As shown, the hot air component 100 of the air fryer includes a fan 1 and a heating component 2. The fan 1 is installed on the side of the heating component 2 away from the cooking cavity 202. The fan 1 can be set as an axial flow fan 1. The fan 1 is used to drive the air in the hot air cavity 201 to form a heated airflow, and the heated airflow is suitable for circulating in the cooking cavity 202 and the hot air cavity 201.

[0038] The heating assembly 2 includes a heating tube 21 and an auxiliary heating element 22. The auxiliary heating element 22 is used to be connected to the outer peripheral wall of the heating tube 21, and the auxiliary heating element 22 is arranged to protrude radially along the heating tube 21. The outer surface of the heating tube 21 and the outer surface of the auxiliary heating element 22 can jointly define a heating surface. The heating assembly 2 can heat the heating airflow through the heating surface, so that the heated heating airflow can be used to heat the cooking cavity 202, thereby realizing indirect heating, and the heating assembly 2 can also perform radiation heating on the cooking cavity 202 through the heating surface, thereby realizing direct heating. Preferably, the heating tube 21 and the auxiliary heating element 22 can be made of the same metal material. In this way, the area of ​​the heating surface can be increased, and the heating efficiency of the heating assembly 2 is improved.

[0039] According to the hot air component 100 of the air-conditioned fryer according to the embodiment of the utility model, the heating surface is defined by the heating tube 21 and the auxiliary heating element 22, so that the area of ​​the heating surface can be increased, the heat radiation efficiency of the heating component 2 is improved, and the overall heating efficiency of the hot air component 100 is improved.

[0040] In some embodiments of the present invention, Figure 2 As shown, the auxiliary heating element 22 can be provided in plurality, and the plurality of auxiliary heating elements 22 are spaced apart and distributed along the extension direction of the heating tube 21. Through the above arrangement, the size of a single auxiliary heating element 22 can be reduced, which is conducive to reducing the difficulty of processing and assembling the heating assembly 2, and improving the practicality of the heating assembly 2.

[0041] In some embodiments of the present invention, the auxiliary heating element 22 includes a sleeve portion 221 and at least one heat dissipation portion 222, the sleeve portion 221 is sleeved on the outside of the heating tube 21, and the heat dissipation portion 222 is connected to the outer peripheral wall of the sleeve portion 221 and protrudes radially outward.

[0042] For example, refer to Figure 2-Figure 3 As shown, the auxiliary heating element 22 includes a sleeve portion 221 and at least one heat dissipation portion 222. The sleeve portion 221 is cylindrical in structure. The sleeve portion 221 is matched with the heating tube 21 so that the sleeve portion 221 can be sleeved on the outside of the heating tube 21 and connected to the heating tube 21, such as by a connection method such as clamping or welding. Among them, the heat dissipation portion 222 is annular in structure. The heat dissipation portion 222 can be one, and a single heat dissipation portion 222 is connected around the outer peripheral wall of the end of the sleeve portion 221. The heat dissipation portion 222 can also be multiple, and multiple heat dissipation portions 222 are arranged at intervals along the axial direction of the sleeve portion 221 and are connected around the outer peripheral wall of the sleeve portion 221. This application does not limit this. The heat dissipation portion 222 is arranged to protrude outward along the radial direction of the sleeve portion 221, and the outer peripheral wall of the heating tube 21, the outer peripheral wall of the sleeve portion 221, and the side wall of the heat dissipation portion 222 together constitute the heating surface.

[0043] Through the above arrangement, the matching area between the auxiliary heating element 22 and the heating tube 21 can be increased, which is beneficial to improving the installation stability of the auxiliary heating element 22 and improving the stability of the hot air component 100.

[0044] In some embodiments of the present invention, the thickness W of the heat dissipation portion 222 can be set to 0.1 mm to 2 mm. For example, the thickness W of the heat dissipation portion 222 can be set to 0.5 mm; or, the thickness W of the heat dissipation portion 222 can be set to 1 mm; or, the thickness W of the heat dissipation portion 222 can be set to 1.5 mm, and this application does not impose any restrictions on this. Through the above-mentioned setting, the heat dissipation portion 222 can have sufficient structural strength, which is conducive to improving the stability of the heat dissipation portion 222, and can avoid the thickness of the heat dissipation portion 222 being too large to cause a decrease in heating efficiency, thereby improving the reliability of the hot air component 100.

[0045] In some embodiments of the present invention, Figure 3 As shown, the auxiliary heating element 22 further includes a transition portion 223, which is connected between the heat dissipation portion 222 and the sleeve portion 221. The transition portion 223 can be configured as a chamfer or an inclined surface. Thus, the structural strength of the auxiliary heating element 22 can be improved, and the stability of the auxiliary heating element 22 can be improved.

[0046] In addition, when the auxiliary heating element 22 is cast, the auxiliary heating element 22 can be easily reversed, which helps to reduce the difficulty of processing the auxiliary heating element 22.

[0047] In some embodiments of the present invention, the dimension of the sleeve portion 221 extending in the axial direction is L1, and the distance between two adjacent auxiliary heating elements 22 is L2, which satisfies: 1mm≤L2-L1≤3mm.

[0048] For example, the dimension of the sleeve portion 221 extending in the axial direction may be set to L1, and the spacing between two adjacent auxiliary heating elements 22 may be set to L2, satisfying: 1mm≤L1-L2≤3mm. In other words, the difference between the spacing L2 between two adjacent auxiliary heating elements 22 and the dimension L1 of the sleeve portion 221 extending in the axial direction may be set to be greater than or equal to 1mm, and less than or equal to 3mm, so that the multiple auxiliary heating elements 22 on the heating tube 21 have a suitable density. This is conducive to improving the design rationality of the hot air component 100.

[0049] In some embodiments of the utility model, the heating tube 21 is coiled and includes a plurality of surrounding portions 211 arranged from the inside to the outside, each surrounding portion 211 is provided with a plurality of auxiliary heating elements 22, and the distance between any two adjacent auxiliary heating elements 22 on the same surrounding portion 211 gradually decreases in the direction from the inside to the outside.

[0050] For example, refer to Figure 2As shown, the heating tube 21 can be coiled to form a spiral shape, and the heating tube 21 includes a plurality of surrounding parts 211, and the plurality of surrounding parts 211 are respectively constructed as ring structures of different sizes, and the plurality of surrounding parts 211 are arranged in this way from the inside to the outside and are sequentially connected. A plurality of auxiliary heating elements 22 are respectively provided on each surrounding part 211, and the plurality of auxiliary heating elements 22 on the same surrounding part 211 are arranged at intervals. Among them, in the direction from the inside to the outside, the distance between any two adjacent auxiliary heating elements 22 on the same surrounding part 211 can be gradually reduced, that is, the distance between the two adjacent auxiliary heating elements 22 on the outer surrounding part 211 is smaller, so that the heating surface of the outer surrounding part 211 has a larger area. Through the above arrangement, the heating uniformity of the heating component 2 can be improved, which is conducive to improving the practicality of the heating component 2.

[0051] In some embodiments of the present invention, Figure 2 As shown, connection parts 212 may be formed at both ends of the heating tube 21, and the two connection parts 212 extend to the outermost side of the surrounding part 211 and are electrically connected to the power source, so that the power source can heat the heating tube 21. This helps to reduce the difficulty of arranging the heating tube 21.

[0052] In some embodiments of the present invention, Figure 4 As shown, the auxiliary heating element 22 can be constructed as a heat dissipation fin, which is sleeved on the outside of the heating tube 21 and spirally arranged in the extension direction of the heating tube 21. The heat dissipation fin can be arranged in a clockwise spiral or in a counterclockwise spiral, and this application does not limit this. Through the above arrangement, the installation of the auxiliary heating element 22 can be completed in a single action, which is conducive to reducing the difficulty of installing the auxiliary heating element 22 and improving the practicality of the auxiliary heating element 22.

[0053] In some embodiments of the present invention, the fan 1 is located on one side of the heating tube 21 and is arranged opposite to the heating tube 21. The minimum distance between the fan 1 and the heating tube 21 is L3. The radial protrusion dimension of the auxiliary heating element 22 along the heating tube 21 is L4, satisfying: 5mm≤L3-L4≤10mm.

[0054] For example, refer to Figure 1-Figure 2As shown, the heating tube 21 can be coiled to form a spiral shape, the heating tube 21 is formed with a coiling plane, and the fan 1 is located on the side of the coiling plane of the heating tube 21 away from the cooking cavity 202 and is arranged opposite to the heating tube 21. Among them, the minimum spacing between the fan 1 and the heating tube 21 can be set to L3, and the protruding dimension of the auxiliary heating element 22 along the radial direction of the heating tube 21 can be set to L4, satisfying: 5mm≤L3-L4≤10mm. In other words, the difference between the minimum spacing L3 between the fan 1 and the heating tube 21 and the protruding dimension L4 of the auxiliary heating element 22 along the radial direction of the heating tube 21 can be set to be greater than or equal to 5mm and less than or equal to 10mm, so that the fan 1 and the heating component 2 can maintain a suitable spacing. In this way, it can be avoided that the distance between the fan 1 and the heating component 2 is too close to affect the service life of the fan 1, and it can be avoided that the distance between the fan 1 and the heating component 2 is too far to affect the heating effect of the heating component 2 on the heated airflow, thereby improving the design rationality of the hot air component 100.

[0055] In some embodiments of the utility model, the auxiliary heating element 22 can be detachably connected to the heating tube 21. It is understandable that during the operation of the air fryer 1000, grease will circulate in the cooking cavity 202 along with the hot air, and some grease may be deposited on the auxiliary heating element 22 and the heating tube 21, which poses a health hazard and affects the heating efficiency of the heating component 2. Therefore, the auxiliary heating element 22 can be detached from the heating tube 21 to fully clean the heating component 2 when the amount of grease deposited is too large. In this way, grease residue can be reduced, and the cleaning difficulty is relatively low, which improves user satisfaction and ensures the heating efficiency of the heating component 2.

[0056] In some embodiments of the present invention, the auxiliary heating element 22 may be configured to be inclined along the extension direction of the heating tube 21 in the radial direction of the heating tube 21 .

[0057] For example, refer to Figure 3 and Figure 5 As shown, the auxiliary heating element 22 may include a sleeve portion 221 and a heat dissipation portion 222, wherein the sleeve portion 221 is used to be sleeved on the outside of the heating tube 21, and the heat dissipation portion 222 is connected to the end of the sleeve portion 221 along the circumferential direction, and the heat dissipation portion 222 is configured to be arranged obliquely along the extension direction of the heating tube 21 in the radial direction of the heating tube 21. Specifically, the heat dissipation portion 222 may be arranged to extend obliquely toward a side away from the sleeve portion 221 along the extension direction of the heating tube 21; or, the heat dissipation portion 222 may be arranged to extend obliquely toward a side close to the sleeve portion 221 along the extension direction of the heating tube 21, and the present application does not limit this.

[0058] Through the above arrangement, the surface area of ​​the auxiliary heating element 22 can be increased, which is beneficial to improving the overall heating efficiency of the hot air component 100. In addition, the auxiliary heating element 22 can achieve an oil blocking effect, so that grease is not easily deposited on the heating tube 21, especially when the auxiliary heating element 22 is set to be detachable relative to the heating tube 21, the auxiliary heating element 22 can be detached from the heating tube 21 to efficiently clean the grease.

[0059] In some embodiments of the utility model, the projections of at least two adjacent auxiliary heating elements 22 in the radial direction of the heating tube 21 are connected or overlapped. For example, when the heat dissipation portion 222 is set to extend obliquely toward the side away from the sleeve portion 221 along the extension direction of the heating tube 21, the extension dimension of the heat dissipation portion 222 in the extension direction of the heating tube 21 can be set to be equal to the spacing between two adjacent sleeve portions 221, so that the projections of two adjacent auxiliary heating elements 22 in the radial direction of the heating tube 21 are connected; or, the extension dimension of the heat dissipation portion 222 in the extension direction of the heating tube 21 can be set to be greater than the spacing between two adjacent sleeve portions 221, so that the projections of two adjacent auxiliary heating elements 22 in the radial direction of the heating tube 21 overlap each other. In this way, the oil blocking effect of the auxiliary heating element 22 can be improved.

[0060] In some embodiments of the present invention, the auxiliary heating element 22 is configured to be tilted along the air outlet or return direction of the fan 1 in the radial direction of the heating tube 21, so that the auxiliary heating element 22 can guide the hot air output by the fan 1 to the cooking cavity circulation duct of the air fryer 1000. In this way, the auxiliary heating element 22 can also have an air guiding function, which is beneficial to improving the circulation efficiency of the hot air in the cooking cavity 202 and improving the practicality of the hot air component 100.

[0061] The utility model also provides an air fryer 1000.

[0062] like Figure 1 As shown, the air fryer 1000 according to the embodiment of the utility model comprises: a casing 200 and a hot air component 100 of the air fryer according to any of the above embodiments, and the casing 200 is formed with a hot air cavity 201 .

[0063] According to the air fryer 1000 of the embodiment of the utility model, the heating surface is defined by the heating tube 21 and the auxiliary heating element 22, so that the area of ​​the heating surface can be increased, the heat radiation efficiency of the heating component 2 is improved, and the overall heating efficiency of the hot air component 100 is improved, thereby improving the overall performance of the air fryer 1000.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0066] In the description of the present invention, "plurality" means two or more.

[0067] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0068] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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.

[0070] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hot air component of an air fryer, characterized in that: The air fryer is formed with a hot air cavity, the hot air component is arranged in the hot air cavity, and the hot air component includes: A fan, the fan being adapted to drive the air in the hot air chamber to form a heated air flow; A heating assembly, the heating assembly comprising a heating tube and an auxiliary heating element, the auxiliary heating element being connected to the outer peripheral wall of the heating tube and protruding outwardly along the radial direction of the heating tube, and the outer surface of the heating tube and the auxiliary heating element jointly defining a heating surface.

2. The hot air component of the air fryer according to claim 1, characterized in that: There are a plurality of auxiliary heating elements, and the plurality of auxiliary heating elements are distributed at intervals along the extension direction of the heating tube.

3. The hot air component of the air fryer according to claim 2, characterized in that: The auxiliary heating element comprises a sleeve portion and at least one heat dissipation portion, wherein the sleeve portion is sleeved on the outer side of the heating tube, and the heat dissipation portion is connected to the outer peripheral wall of the sleeve portion and protrudes outward in the radial direction.

4. The hot air component of the air fryer according to claim 3, characterized in that: The auxiliary heating element further includes a transition portion connected between the heat dissipation portion and the sleeve portion.

5. The hot air component of the air fryer according to claim 3, characterized in that: The dimension of the sleeve portion extending in the axial direction is L1, and the distance between two adjacent auxiliary heating elements is L2, which satisfies: 1mm≤L2-L1≤3mm.

6. The hot air component of the air fryer according to claim 2, characterized in that: The heating tube is coiled and includes a plurality of surrounding parts arranged from the inside to the outside, each of the surrounding parts is provided with a plurality of the auxiliary heating elements, and the distance between any two adjacent auxiliary heating elements on the same surrounding part gradually decreases in the direction from the inside to the outside.

7. The hot air component of the air fryer according to claim 1, characterized in that: The auxiliary heating element is configured as a heat dissipation fin, and the heat dissipation fin is spirally arranged in the extending direction of the heating tube.

8. The hot air component of the air fryer according to claim 1, characterized in that: The fan is located at one side of the heating tube and is arranged opposite to the heating tube. The minimum distance between the fan and the heating tube is L3. The protruding dimension of the auxiliary heating element along the radial direction of the heating tube is L4, satisfying: 5mm≤L3-L4≤10mm.

9. The hot air component of the air fryer according to claim 1, characterized in that: The auxiliary heating element is detachably connected to the heating tube.

10. The hot air component of the air fryer according to claim 1, characterized in that: The auxiliary heating element is configured to be arranged obliquely along an extending direction of the heating tube in a radial direction of the heating tube.

11. The hot air component of the air fryer according to claim 10, characterized in that: The projections of at least two adjacent auxiliary heating elements in the radial direction of the heating tube are connected or overlapped with each other.

12. The hot air component of the air fryer according to claim 1, characterized in that: The auxiliary heating element is configured to be inclined along the air outlet or return direction of the fan in the radial direction of the heating tube, so as to guide the hot air output by the fan into the cooking cavity circulation duct of the air fryer.

13. An air fryer, characterized in that: include: A casing and a hot air component of an air fryer according to any one of claims 1 to 12, wherein the casing is formed with a hot air cavity.

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