Air fryer

Abstract

The utility model relates to an air fryer which comprises a machine shell and a hot air assembly, a cooking cavity is formed in the machine shell, the hot air assembly is arranged in the machine shell and located above the cooking cavity, and the hot air assembly comprises a heat insulation cover, a flow guide cover and a fan. The air guide cover is arranged at the lower end of the heat insulation cover, an air guide channel is defined by the air guide cover and the heat insulation cover, the fan is arranged in the air guide channel, an air inlet is formed in the middle of the air guide cover, an air outlet is formed in the edge of the air guide cover, and the air guide channel is communicated with the cooking cavity through the air inlet and the air outlet. The air fryer can reduce air loss and is beneficial to improving hot air circulation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and specifically, to an air fryer. Background Art

[0002] An air fryer is a cooking utensil that uses hot air for "frying". The air fryer replaces hot oil with hot air, and forms a circulating heat flow in a closed pot with hot air to cook food. At the same time, the hot air can also blow away the moisture on the surface of the food, making the ingredients achieve an effect similar to frying.

[0003] In the related art, a protective structure is usually provided in the air fryer to isolate and protect the moving parts and heating parts in the air fryer. However, the protective structure in the above air fryer will hinder the hot air circulation, resulting in a large wind loss of the hot air and reducing the hot air circulation efficiency. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0005] Therefore, the utility model provides an air fryer that can reduce wind loss and is beneficial to improving the hot air circulation efficiency.

[0006] The air fryer of the utility model includes: a housing, with a cooking cavity inside the housing; a hot air assembly, the hot air assembly is arranged inside the housing and above the cooking cavity, the hot air assembly includes a heat insulation cover, a diversion cover and a fan, the diversion cover is arranged at the lower end of the heat insulation cover and defines a wind guiding channel with the heat insulation cover, the fan is arranged inside the wind guiding channel, an air inlet is arranged in the middle of the diversion cover, an air outlet is arranged at the edge of the diversion cover, and the wind guiding channel is communicated with the cooking cavity through the air inlet and the air outlet.

[0007] In the air fryer of the utility model, by arranging the fan inside the wind guiding channel defined by the diversion cover and the heat insulation cover, the fan can be isolated and protected. And because an air outlet is arranged at the edge of the diversion cover, the hot air formed by the rotation of the fan is concentratedly introduced into the cooking cavity through the air outlet at the edge of the diversion cover. The hot air flows downward along the side wall of the cooking cavity and reaches the bottom of the cooking cavity, then flows upward to the middle area of the cooking cavity, and finally returns to the wind guiding channel through the air inlet in the middle of the diversion cover for the next hot air circulation. By setting the hot air assembly as the above structure, the air fryer of the utility model can optimize the circulation path of the hot air, reduce wind loss, and is beneficial to improving the hot air circulation efficiency.

[0008] Optionally, the air deflector includes an air guiding body and an edge portion. The edge portion is arranged around the circumference of the air guiding body. The air inlet is provided on the air guiding body, and there are multiple air outlets. The multiple air outlets are arranged at intervals along the circumference of the air guiding body on the edge portion. The air fryer of the present utility model can improve the uniformity of the hot air flow in the cooking cavity and the heating effect of the food by providing multiple air outlets along the circumference of the edge portion. On the other hand, since the air outlets are arranged on the edge portion of the air deflector, it is convenient for the processing and manufacturing of the air deflector.

[0009] Optionally, the edge of the air deflector is spaced apart from the inner wall of the heat insulation cover along the radial direction of the heat insulation cover to define the air outlet. The air fryer of the present utility model forms the air outlet in the above manner, which is beneficial to increasing the ventilation area of the air outlet, reducing the obstruction of the edge portion to the hot air at the edge, reducing the wind loss, and increasing the air volume and wind speed of the hot air delivered downward.

[0010] Optionally, the hot air assembly further includes a protective mesh cover and a heating tube. The protective mesh cover is installed at the lower end of the air guiding body and defines a protective cavity with the air guiding body. The heating tube is arranged in the protective cavity or the air guiding channel. The air fryer of the present utility model can protect the heating tube or the air inlet by providing the protective mesh cover to prevent the user's fingers from contacting the heating tube or the fan, which is beneficial to improving the safety of the air fryer during use.

[0011] Optionally, the ventilation area of a single air outlet is larger than the ventilation area of a single mesh hole of the protective mesh cover. The air fryer of the present utility model can reduce the hot air turbulence phenomenon at the edge position of the air guiding channel by adopting the above structural arrangement, so that most of the hot air in the air guiding channel can enter the cooking cavity through the air outlet, thereby increasing the hot air volume and wind speed in the cooking cavity and improving the cooking efficiency of the food.

[0012] Optionally, in the direction from the center of the protective mesh cover to the edge of the protective mesh cover, the aperture of the mesh holes of the protective mesh cover gradually increases. The air fryer of the present utility model can effectively reduce the obstruction of the protective mesh cover to the hot air at the edge by designing the mesh holes of the protective mesh cover in the above structure, which is beneficial to increasing the air volume and wind speed of the hot air and improving the cooking efficiency of the food.

[0013] Optionally, the air fryer further includes an inner pot. The inner pot is arranged in the cooking cavity. The inner pot has a storage cavity. In the projection plane orthogonal to the axial direction of the fan, the projection of the air outlet is located in the storage cavity. Thus, the hot air entering the cooking cavity through the air outlet can be fully diverted to the storage cavity of the inner pot, so that the circulating hot air can be fully utilized and the cooking efficiency of the food can be improved.

[0014] Optionally, in a projection plane orthogonal to the axis of the fan, the dimension between the outer peripheral contour line of the fan and the inner peripheral contour line of the air outlet is L1, where L1 ≥ 5 mm. Thus, the probability that a user's finger passes through the air outlet and touches the fan can be greatly reduced, improving the safety during the use of the air fryer.

[0015] Optionally, in a projection plane orthogonal to the axis of the fan, the dimension between the outer peripheral contour line and the inner peripheral contour line of the air outlet is L2, where 5 mm ≤ L2 ≤ 10 mm. Thus, the probability that a user's finger passes through the air outlet and touches the heating tube can be reduced, and the hot air turbulence phenomenon at the edge position of the air guiding channel can be reduced, so that most of the hot air in the air guiding channel enters the cooking cavity through the air outlet, thereby increasing the hot air volume and speed in the cooking cavity and improving the cooking efficiency of the food.

[0016] Optionally, in a projection plane orthogonal to the axis of the fan, the projection of the air inlet is located within the inner peripheral contour of the fan blades. Thus, the turbulence phenomenon of the fan blades can be reduced, the loss of hot air during the circulation process can be reduced, which is beneficial to increasing the hot air volume and speed. Description of the Drawings

[0017] Figure 1 is a half-sectional view of the air fryer according to an embodiment of the present invention.

[0018] Figure 2 is an exploded view of the hot air assembly of the air fryer according to an embodiment of the present invention from a sectional perspective.

[0019] Figure 3 is an installation sectional view of the hot air assembly and the inner pot of the air fryer according to an embodiment of the present invention.

[0020] Figure 4 is a bottom view of the air fryer after the protective net cover and the flow guiding cover are installed according to an embodiment of the present invention.

[0021] Figure 5 is a schematic diagram of the flow guiding cover of the air fryer according to an embodiment of the present invention.

[0022] Figure 6 is a schematic diagram of the fan of the air fryer according to an embodiment of the present invention.

[0023] Reference Signs:

[0024] 1. Housing; 11. Cooking Cavity;

[0025] 2. Hot air component; 21. Heat shield; 211. Air guide channel; 22. Air deflector; 221. Air guide body; 2212. Air inlet; 222. Edge part; 2221. Air outlet; 223. Protection cavity; 23. Fan; 24. Protection wire mesh cover; 25. Heating tube; 26. Motor

[0026] 3. Inner pot; 31. Storage cavity

[0027] 4. Fry basket Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0029] Reference is made below to the attached Figures 1 to 6 to describe the air fryer of the embodiments of the present utility model

[0030] As Figures 1 to 6 shown, the air fryer of the embodiments of the present utility model includes: a housing 1 and a hot air component 2. There is a cooking cavity 11 inside the housing 1. The hot air component 2 includes a heat shield 21, an air deflector 22 and a fan 23. The hot air component 2 is disposed inside the housing 1 and above the cooking cavity 11. The air deflector 22 is disposed at the lower end of the heat shield 21 and defines an air guide channel 211 with the heat shield 21. The fan 23 is disposed inside the air guide channel 211. An air inlet 2212 is provided in the middle of the air deflector 22, and an air outlet 2221 is provided at the edge of the air deflector 22. The air guide channel 211 communicates with the cooking cavity 11 through the air inlet 2212 and the air outlet 2221.

[0031] In the air fryer of the embodiments of the present utility model, by disposing the fan 23 inside the air guide channel 211 defined by the air deflector 22 and the heat shield 21, the fan 23 can be isolated and protected. And since an air outlet 2221 is provided at the edge of the air deflector 22, the hot air formed by the rotation of the fan 23 is centrally introduced into the cooking cavity 11 through the air outlet 2221 at the edge of the air deflector 22. The hot air flows downward along the side wall of the cooking cavity 11 and reaches the bottom of the cooking cavity 11, then flows upward to the middle area of the cooking cavity 11, and finally returns to the air guide channel 211 through the air inlet 2212 in the middle of the air deflector 22 for the next hot air circulation. By setting the hot air component 2 in the above structure, the air fryer of the embodiments of the present utility model can optimize the circulation path of the hot air, reduce the air loss, and is beneficial to improving the circulation efficiency of the hot air.

[0032] Compared with the solution of directly arranging the protective mesh cover 24 below the heat insulation cover 21, the present application can reduce the obstruction of the protective mesh cover 24 to the hot air. Moreover, the air guiding channel 211 formed by the air guiding cover 22 and the heat insulation cover 21 in the present application can centrally guide the hot air into the cooking cavity 11, and flow downward along the side wall of the cooking cavity 11 to form a cycle, which can effectively reduce the turbulence phenomenon during the process of the hot air entering the cooking cavity 11, increase the air volume and air speed of the hot air transported downward, and improve the cooking efficiency of the hot air for food.

[0033] It should be noted that, through experimental research, the inventors of the present application found that the hot air in the air fryer in the related art is prone to form strong local turbulence in the area of the inner wall of the edge of the heat insulation cover 21. In this turbulent flow area, the heat flow does not pass downward through the cooking cavity 11, but directly returns from the edge area of the fan 23 to the negative pressure central area of the fan 23, thereby resulting in poor circulation efficiency of the hot air and causing turbulent flow loss of the hot air. However, the air fryer according to the embodiment of the present utility model can guide all the air volume generated by the fan 23 into the cooking cavity 11 through the air guiding channel, which can not only reduce the loss of local turbulence, but also improve the circulation efficiency of the hot air and ensure the cooking effect of the food.

[0034] Optionally, as Figure 2 and Figure 4 shown, the air guiding cover 22 includes an air guiding body 221 and an edge portion 222. The edge portion 222 is arranged around the circumference of the air guiding body 221. The air inlet 2212 is arranged on the air guiding body 221, and there are multiple air outlets 2221. The multiple air outlets 2221 are arranged at intervals along the circumference of the air guiding body 221 on the edge portion 222. For example, the multiple air outlets 2221 are arranged at equal intervals along the circumference of the air guiding body 221, and each air outlet 2221 extends along the circumference of the air guiding body 221.

[0035] The air fryer according to the embodiment of the present utility model can improve the uniformity of the hot air flowing in the cooking cavity 11 and the heat receiving effect of the food by providing multiple air outlets 2221 along the circumference of the edge portion 222. On the other hand, since the air outlets 2221 are arranged on the edge portion 222 of the air guiding cover 22, it is convenient to manufacture the air guiding cover 22.

[0036] Specifically, the air guiding body 221 protrudes upward and has a flat surface in the middle. The corner positions of the air guiding body 221 and the connection positions between the air guiding body 221 and the edge portion 222 are all smoothly transitioned, so that the air guiding channel 211 defined by the air guiding cover 22 and the heat insulation cover 21 is also relatively regular and smooth. Further, in the direction from the center of the air guiding cover 22 to the edge of the air guiding cover 22, the upper and lower widths of the air guiding channel 211 are also uniformly consistent, thereby greatly reducing the turbulence phenomenon of the hot air in the air guiding channel 211.

[0037] In other examples, the edge of the air guide cover 22 is spaced apart from the inner wall of the heat insulation cover 21 along the radial direction of the heat insulation cover 21 to define an air outlet 2221. The air fryer of the embodiment of the utility model adopts the above-mentioned method to form the air outlet 2221, which is conducive to increasing the ventilation area of ​​the air outlet 2221, reducing the obstruction of the edge portion 222 to the edge hot air, reducing wind loss, and is conducive to increasing the wind speed of the hot air transported downward.

[0038] It is understandable that the air outlet 2221 formed in the above manner is generally annular in shape. Since there is no blocking of the connecting ribs between two adjacent air outlets 2221, hot air can be discharged from the air outlet 2221 more smoothly, which is conducive to reducing the obstruction of the edge portion 222 to the edge hot air and reducing wind loss.

[0039] like Figures 1 to 3 As shown, the hot air assembly 2 also includes a protective mesh cover 24 and a heating pipe 25. The protective mesh cover 24 is installed at the lower end of the air guide body 221 and defines a protective cavity 223 with the air guide body 221. The heating pipe 25 is arranged in the protective cavity 223 or the air guide channel 211. In the example of the present application, the heating pipe 25 is installed in the protective cavity 223. In other examples, the heating pipe 25 is installed in the protective cavity 223. The heating pipe 25 can be arranged on one side of the fan 23 along the up and down direction of the housing 1, or the heating pipe 25 is sleeved on the outer periphery of the fan 23, or the heating pipe 25 is arranged on the inner side of the fan 23.

[0040] The air fryer of the embodiment of the utility model can protect the heating tube 25 and the air inlet 2212 by providing a protective mesh cover 24 to prevent the user's fingers from contacting the heating tube 25 or the fan 23, which is beneficial to improving the safety of the air fryer when in use.

[0041] Specifically, Figure 2 As shown, the hot air assembly 2 also includes a motor 26, which is arranged above the heat insulation cover 21 and is transmission-connected to the fan 23. The heat insulation cover 21 can reduce the probability of heat from the heating tube 25 being transferred to the motor 26, which is beneficial to improving the service life of the motor 26.

[0042] Optionally, the ventilation area of ​​a single air outlet 2221 is greater than the ventilation area of ​​a single mesh of the protective mesh cover 24. In other words, the aperture of a single air outlet 2221 is greater than the aperture of a single mesh. The air fryer of the embodiment of the utility model adopts the above-mentioned structural arrangement, which is conducive to reducing the hot air turbulence phenomenon at the edge of the air guide channel 211, and can make most of the hot air in the air guide channel 211 enter the cooking cavity 11 through the air outlet 2221, thereby increasing the hot air volume and wind speed in the cooking cavity 11, and improving the cooking efficiency of food.

[0043] For example, in the direction from the center of the protection net cover 24 to the edge of the protection net cover 24, the aperture of the mesh holes of the protection net cover 24 gradually increases. By designing the mesh holes of the protection net cover 24 into the above structure, the air fryer according to the embodiment of the present utility model can effectively reduce the obstruction of the protection net cover 24 to the hot air at the edge, which is beneficial to improving the air volume and wind speed of the hot air and enhancing the cooking efficiency of food.

[0044] The shape of the mesh holes can be circular, rectangular, regular hexagonal, etc., and the present application does not limit this.

[0045] In one example, as Figure 1 and Figure 3 shown, the air fryer further includes an inner pot 3. The inner pot 3 is disposed in the cooking cavity 11, and the inner pot 3 has a storage cavity 31. A fry basket 4 can be placed at the bottom of the storage cavity 31, or the bottom of the inner pot 3 itself forms the structure of the fry basket 4.

[0046] In the projection plane orthogonal to the axial direction of the fan 23, the projection of the air outlet 2221 is located in the storage cavity 31. In other words, the orthographic projection of the air outlet 2221 completely falls into the storage cavity 31. Thus, the hot air entering the cooking cavity 11 through the air outlet 2221 can all be guided to the storage cavity 31 of the inner pot 3, so that the circulating hot air can be fully utilized to improve the cooking efficiency of food.

[0047] Optionally, in the projection plane orthogonal to the axial direction of the fan 23, the dimension between the outer peripheral contour line of the fan 23 and the inner peripheral contour line of the air outlet 2221 is L1, where L1≥5 mm. For example, L1 can be 5 mm, 7 mm, 10 mm, 15 mm. This can hide the fan 23, greatly reducing the probability that a user's finger passes through the air outlet 2221 and touches the fan 23, and improving the safety of the air fryer during use.

[0048] Optionally, in the projection plane orthogonal to the axial direction of the fan 23, the dimension between the outer peripheral contour line of the air outlet 2221 and the inner peripheral contour line of the air outlet 2221 is L2, where 5 mm≤L2≤10 mm. In other words, the gap between the outer edge in the radial direction of the air outlet 2221 and the inner edge in the radial direction of the air outlet 2221 is L2. For example, L1 can be 5 mm, 7 mm, 10 mm, 12 mm, 15 mm. Thus, it can not only reduce the probability that a user's finger passes through the air outlet 2221 and touches the heating tube 25, but also reduce the hot air turbulence phenomenon at the edge position of the air guiding channel 211, so that most of the hot air in the air guiding channel 211 enters the cooking cavity 11 through the air outlet 2221, thereby increasing the air volume and wind speed of the hot air in the cooking cavity 11 and improving the cooking efficiency of food.

[0049] Optionally, in the projection plane orthogonal to the axial direction of the fan 23, the projection of the air inlet 2212 is located within the inner peripheral contour of the fan blades of the fan 23. In the example of the present application, the fan 23 is a centrifugal fan 23. The outermost end of the fan blade of the fan 23 is located on the outer peripheral contour line of the fan 23, and the innermost end of the fan blade of the fan 23 is located on the inner peripheral contour line of the fan 23. Since the projection of the air inlet 2212 is located within the inner peripheral contour of the fan blades of the fan 23, the wind pressure generated by the rotation of the fan 23 can be made larger, the problem of local turbulence in the air guiding channel 211 is reduced, and the loss of hot air during the circulation process is reduced, which is beneficial to improving the air volume and air speed of the hot air.

[0050] In the description of the present invention, 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. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0054] In the present utility model, the terms "an embodiment", "some embodiments", "exemplification", "specific exemplification", or "some exemplifications", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or exemplification are included in at least one embodiment or exemplification of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or exemplification. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or exemplifications. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or exemplifications described in this specification and the features of different embodiments or exemplifications.

[0055] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Any changes, modifications, substitutions and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. An air fryer, characterized in that: include: A casing (1), wherein a cooking cavity (11) is provided in the casing (1); A hot air component (2), wherein the hot air component (2) is arranged in the casing (1) and is located above the cooking cavity (11), the hot air component (2) comprises a heat insulation cover (21), a flow guide cover (22) and a fan (23), the flow guide cover (22) is arranged at the lower end of the heat insulation cover (21) and defines an air guide channel (211) with the heat insulation cover (21), the fan (23) is arranged in the air guide channel (211), an air inlet (2212) is arranged in the middle of the flow guide cover (22), an air outlet (2221) is arranged at the edge of the flow guide cover (22), and the air guide channel (211) is connected to the cooking cavity (11) through the air inlet (2212) and the air outlet (2221).

2. The air fryer according to claim 1, characterized in that: The air guide cover (22) comprises an air guide body (221) and an edge portion (222), wherein the edge portion (222) is arranged circumferentially around the air guide body (221), the air inlet (2212) is provided on the air guide body (221), and there are a plurality of air outlets (2221), which are arranged at intervals along the circumference of the air guide body (221) on the edge portion (222).

3. The air fryer according to claim 1, characterized in that: The edge of the air guide cover (22) and the inner wall of the heat insulation cover (21) are spaced apart in the radial direction of the heat insulation cover (21) to define the air outlet (2221).

4. The air fryer according to claim 2, characterized in that: The hot air assembly (2) further comprises a protective mesh cover (24) and a heating pipe (25); the protective mesh cover (24) is installed at the lower end of the air guide body (221) and defines a protective cavity (223) with the air guide body (221); and the heating pipe (25) is arranged in the protective cavity (223) or in the air guide channel (211).

5. The air fryer according to claim 4, characterized in that: The ventilation area of ​​a single air outlet (2221) is greater than the ventilation area of ​​a single mesh of the protective mesh cover (24).

6. The air fryer according to claim 4, characterized in that: In the direction from the center of the protective mesh cover (24) to the edge of the protective mesh cover (24), the aperture of the mesh of the protective mesh cover (24) gradually increases.

7. The air fryer according to claim 1, characterized in that: The air fryer further comprises an inner pot (3), wherein the inner pot (3) is arranged in the cooking cavity (11), and the inner pot (3) has a storage cavity (31), and within a projection plane orthogonal to the axial direction of the fan (23), the projection of the air outlet (2221) is located within the storage cavity (31).

8. The air fryer according to any one of claims 1 to 7, characterized in that: In a projection plane orthogonal to the axial direction of the fan (23), the dimension between the outer peripheral contour line of the fan (23) and the inner peripheral contour line of the air outlet (2221) is L1, where L1≥5mm.

9. The air fryer according to any one of claims 1 to 7, characterized in that: In a projection plane orthogonal to the axial direction of the fan (23), a dimension between an outer peripheral contour line of the air outlet (2221) and an inner peripheral contour line of the air outlet (2221) is L2, wherein 5 mm ≤ L2 ≤ 10 mm.

10. The air fryer according to any one of claims 1 to 7, characterized in that: In a projection plane orthogonal to the axial direction of the fan (23), the projection of the air inlet (2212) is located within the inner circumferential contour of the blades of the fan (23).

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