Air fryer adopting lower air intake

Abstract

The invention discloses an air fryer adopting lower air intake, and belongs to the technical field of air fryers, the air fryer comprises a shell internally provided with a cooking cavity, a hot air assembly arranged in the shell and a frying barrel detachably arranged in the cooking cavity, a heat insulation flow channel wrapping the lower portion of the frying barrel is arranged in the cooking cavity, and the shell is provided with an air inlet and an air outlet. The air inlet is located in the lower portion of the shell, the heat insulation flow channel is communicated with the air inlet and the air outlet, and the hot air assembly drives external air to enter the heat insulation flow channel through the air inlet and be exhausted through the air outlet. The internal structure of the air fryer is simplified, the processing difficulty and cost are reduced, and meanwhile, air supplemented into the frying barrel is preheated when flowing through the heat insulation flow channel, namely, heat energy conducted outwards from the lower part of the frying barrel is recovered to a certain extent, so that the heat efficiency can be improved to a certain extent, and the energy consumption can be reduced to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of air fryers, and particularly relates to an air fryer with downward air intake. Background Art

[0002] An air fryer is a household appliance that can "fry" cooked food with air. It mainly uses air to replace the hot oil in the original frying pan to cook the food; at the same time, the hot air also blows away the moisture on the surface of the food, making the ingredients achieve an effect similar to frying.

[0003] The heating temperature of an air fryer can usually reach 200 degrees Celsius, and some high-power air fryers may reach 230 degrees Celsius. When high temperature cannot be effectively isolated, the high temperature will quickly conduct to the outer shell. For this reason, the existing air fryer needs to be provided with a corresponding heat insulation structure inside to wrap the frying barrel in the air fryer to avoid the direct conduction of high temperature to the outer shell. The overall structure is relatively complex, with high processing difficulty and cost. Summary of the Invention

[0004] In order to overcome the defects existing in the prior art, the present invention provides an air fryer with downward air intake.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an air fryer with downward air intake, comprising: A housing with a cooking cavity inside; A hot air assembly disposed in the housing; A frying barrel detachably placed in the cooking cavity; An insulating flow channel for wrapping the lower part of the frying barrel is provided in the cooking cavity. The housing is respectively provided with an air inlet and an air outlet. The air inlet is located at the lower part of the housing. The insulating flow channel is respectively communicated with the air inlet and the air outlet. The hot air assembly drives the external air to enter the insulating flow channel from the air inlet and is discharged through the air outlet.

[0006] Preferably, after the lower part of the frying barrel is integrally wrapped in the insulating flow channel, the insulating flow channel is in a pot shape, and the lower part of the frying barrel is directly opposite to the inner side wall of the housing.

[0007] Preferably, the air inlet is provided at the bottom of the housing and is opposite to the bottom of the frying barrel.

[0008] Preferably, the housing includes a housing body and a base provided at the bottom of the housing body. The air inlet is provided on the base. A concave portion is provided in the middle of the bottom surface of the base, and a plurality of groups of support feet are provided in the concave portion.

[0009] Preferably, a plurality of groups of ridges are provided at intervals on the outside of the base. The outside of the ridges abuts against the housing body, so that a plurality of groups of gaps are formed between the base and the housing body, and the plurality of groups of gaps constitute the air inlet.

[0010] Preferably, the air inlet is provided at the bottom of the base, the air inlet is arc-shaped, and a baffle is provided below the air inlet.

[0011] Preferably, multiple groups of annular protrusions or multiple groups of arc-shaped protrusions are provided at the bottom of the base, and the air inlet is provided on the side surface of the annular protrusions or arc-shaped protrusions.

[0012] Preferably, the air inlet is provided on the side surface of the bottom of the housing, and the air inlet adopts downward air intake.

[0013] Preferably, the housing includes a housing body and a base provided at the bottom of the housing body. The base is integrally plate-shaped, and multiple groups of support feet are provided on the bottom surface of the base.

[0014] Preferably, the hot air assembly includes a heating tube, a circulating inner fan blade, a heat dissipation fan blade, and a driving motor. A wind guiding cover that can cover the above the frying bucket is provided in the cooking cavity. The heating tube and the circulating inner fan blade are provided in the wind guiding cover, and the heat dissipation fan blade is provided above the wind guiding cover. The external air is driven by the heat dissipation fan blade or the circulating inner fan blade to enter the heat insulation flow channel from the air inlet and is discharged through the air outlet.

[0015] Preferably, the air fryer further includes a pot rack. The pot rack includes a sealing part and a supporting part. The sealing part is provided in the cooking cavity through the supporting part. A sealing support table is provided on the upper part of the sealing part. The outer edge of the frying bucket body can be placed above the sealing support table, and an arc-shaped airtight baffle is provided on the lower part of the sealing part.

[0016] Preferably, multiple groups of conduction notches are provided at intervals on the outer side of the sealing part. The supporting part is connected to the bottom of the housing, and the heat insulation flow channel is communicated to the upper part of the housing through the conduction notches. The supporting part adopts a column with a wire groove opened on the back surface, and the wire groove on the back surface of the column is closely attached to the housing.

[0017] The beneficial effects of the present invention are as follows: Compared with the prior art, by adopting a downward air intake air inlet and arranging a heat insulation flow channel inside the housing, the heat insulation structure required for the lower part of the frying bucket can be cancelled, the internal structure of the air fryer can be simplified, the processing difficulty and cost can be reduced. At the same time, since the air supplemented into the frying bucket has been preheated when flowing through the heat insulation flow channel, that is, a certain amount of heat energy conducted outward from the lower part of the frying bucket is recovered. Therefore, the thermal efficiency can be improved to a certain extent and the energy consumption can be reduced. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of a frying bucket and a heat insulation structure in the prior art; Figure 2 It is a three-dimensional view of the first embodiment of the present invention Figure 1 ; Figure 3 It is a three-dimensional view of the first embodiment of the present invention Figure 2 ; Figure 4Schematic cross-sectional view of Embodiment 1 of the present invention; Figure 5 is Figure 4 an enlarged schematic view of part A in; Figure 6 is a three-dimensional view of the base in Embodiment 1 of the present invention Figure 1 ; Figure 7 is a three-dimensional view of the base in Embodiment 1 of the present invention Figure 2 ; Figure 8 is a three-dimensional view of the pot rack in the embodiment of the present invention; Figure 9 is an assembly schematic view of the frying barrel and the pot rack in the embodiment of the present invention; Figure 10 is a three-dimensional view of the base in Embodiment 2 of the present invention; Figure 11 is a partial cross-sectional schematic view of the base in Embodiment 2 of the present invention; Figure 12 is a three-dimensional view of the base in Embodiment 3 of the present invention; Figure 13 is a partial cross-sectional schematic view of the base in Embodiment 3 of the present invention; Figure 14 is a partial cross-sectional enlarged schematic view of Embodiment 4 of the present invention; Figure 15 is a three-dimensional view of Embodiment 5 of the present invention Figure 1 ; Figure 16 is a three-dimensional view of Embodiment 5 of the present invention Figure 2 ; Figure 17 is a cross-sectional schematic view of Embodiment 5 of the present invention; Figure 18 is Figure 17 an enlarged schematic view of part B in; Figure 19 is a three-dimensional view of the base and the pot rack in Embodiment 5 of the present invention; Figure 20 is a mating schematic view of the frying barrel and the pot rack in Embodiment 5 of the present invention; Figure 21 is a schematic view of the air flow direction in the embodiment of the present invention.

[0019] In the figure, 10 is the housing; 11 is the housing body; 12 is the base; 13 is the concave portion; 14 is the support leg; 15 is the convex ridge; 16 is the gap; 17 is the baffle; 18 is the arc-shaped protrusion; 20 is the cooking cavity; 21 is the heat insulation flow channel; 22 is the air inlet; 23 is the air outlet; 31 is the heating tube; 32 is the circulating inner fan blade; 33 is the heat dissipation fan blade; 34 is the drive motor; 35 is the air guide cover; 40 is the frying bucket; 50 is the pot rack; 51 is the sealing portion; 52 is the sealing support table; 53 is the arc-shaped airtight baffle; 54 is the conduction notch; 55 is the support portion. Specific Embodiments

[0020] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation on the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Embodiment 1

[0021] As shown Figures 1-9 in the figure, an air fryer adopting downward air intake provided by the present invention includes: A housing 10 with a cooking cavity 20 provided inside; A hot air assembly provided in the housing 10; A frying bucket 40 detachably placed in the cooking cavity 20 for holding food; A heat insulation flow channel 21 wrapping the lower part of the frying bucket 40 is provided in the cooking cavity 20. After the lower part of the frying bucket 40 is integrally wrapped in the heat insulation flow channel 21, the heat insulation flow channel 21 is in a pot shape, and the lower part of the frying bucket 40 is directly opposite to the inner side wall of the housing 10. The housing 10 is respectively provided with an air inlet 22 and an air outlet 23. In this embodiment, the air outlet 23 is provided at the upper part of the housing 10, and the air inlet 22 is located at the lower part of the housing 10. Specifically, the air inlet 22 is provided at the bottom of the housing 10 and is opposite to the bottom of the frying bucket 40. The heat insulation flow channel 21 communicates with the air inlet 22 and the air outlet 23 respectively. The hot air assembly drives external air to enter the heat insulation flow channel 21 from the air inlet 22 and is discharged through the air outlet 23.

[0022] Specifically, when the air fryer is working, the hot air component forms circulating high-temperature hot air to cook the food in the frying barrel 40. Synchronously, it drives the external air to enter the heat insulation flow channel 21 from the air inlet 22 at the lower part of the housing 10, thereby forming a flowing air heat insulation and cooling barrier between the lower part of the frying barrel 40 and the housing 10. The heat conducted outward from the lower part of the frying barrel 40 can be transferred to the flowing low-temperature air. The heated air can continue to flow upward and then be brought into the frying barrel 40 by the hot air component to cook the food, or directly discharged to the outside of the housing 10 through the air outlet 23. Compared with the prior art, by adopting the air inlet 22 with downward air intake and arranging the heat insulation flow channel 21 inside the housing 10, the heat insulation structure required for the lower part of the frying barrel 40 can be cancelled, the internal structure of the air fryer can be simplified, the processing difficulty and cost can be reduced. At the same time, since the air supplemented into the frying barrel 40 has been preheated when flowing through the heat insulation flow channel 21, that is, a certain amount of heat energy conducted outward from the lower part of the frying barrel 40 has been recovered, the thermal efficiency can be improved to a certain extent and the energy consumption can be reduced.

[0023] Further, the housing 10 includes a housing body 11 and a base 12 provided at the bottom of the housing body 11. The base 12 is integrally formed, and its top is an integral plane. The air inlet 22 is provided on the base 12. A concave portion 13 is provided in the middle of the bottom surface of the base 12, and a plurality of groups of support feet 14 are provided in the concave portion. By adopting the air inlet 22 with downward air intake and arranging the heat insulation flow channel 21 inside the housing 10, the heat insulation structure required for the lower part of the frying barrel 40 can be cancelled, the structure of the original base 12 can be simplified, and the base 12 can be directly integrally formed, reducing the processing difficulty and cost.

[0024] Further, a plurality of groups of ridges 15 are provided at intervals on the outer side of the base 12. The outer sides of the ridges 15 are abutted against the housing body 11, forming a plurality of groups of gaps 16 between the base 12 and the housing body 11. The plurality of groups of gaps 16 constitute the air inlet 22. Chamfers are provided on the outer sides of the upper ends of the ridges 15. When the base 12 is installed into the housing body 11, it can be guided through the chamfers, improving the assembly convenience. By adopting the arrangement of the ridges 15 in cooperation with the housing body 11 to form the air inlet 22, compared with opening the air inlet 22 in the form of an opening on the lower part of the housing body 11 or the base 12, the processing is more convenient.

[0025] Further, the hot air assembly includes a heating tube 31, a circulating inner fan blade 32, a heat dissipation fan blade 33, and a driving motor 34. The driving motor 34 synchronously drives the circulating inner fan blade 32 and the heat dissipation fan blade 33. A wind guide cover 35 that can cover the upper part of the frying bucket 40 is provided in the cooking cavity 20. The heating tube 31 and the circulating inner fan blade 32 are arranged inside the wind guide cover 35, and the heat dissipation fan blade 33 is arranged above the wind guide cover 35. The external air is driven by the heat dissipation fan blade 33 or the circulating inner fan blade 32 to enter the heat insulation flow channel 21 from the air inlet 22. In this embodiment, after the external air enters the heat insulation flow channel 21 from the air inlet 22, it flows upward. Part of it enters the wind guide cover 35 under the drive of the circulating inner fan blade 32, that is, it is supplemented into the frying bucket 40, and part of it is discharged to the outside through the air outlet 23 under the drive of the heat dissipation fan blade 33.

[0026] Further, the air fryer further includes a pot stand 50 for forming a seal between the wind guide cover 35 and the frying bucket 40. The pot stand 50 includes a sealing part 51 and a supporting part 55. The sealing part 51 is arranged in the cooking cavity 20 through the supporting part 55. A sealing platform 52 is provided on the upper part of the sealing part 51. The outer edge of the main body of the frying bucket 40 can be placed above the sealing platform 52. An arc-shaped airtight baffle 53 is provided on the lower part of the sealing part 51. The arc-shaped airtight baffle 53 surrounds the upper part of the frying bucket 40. Among them, since there is a certain gap 16 between the frying bucket 40 and the pot stand 50, by setting the arc-shaped airtight baffle 53, the airtightness between the wind guide cover 35 and the frying bucket 40 can be improved, and the cooking effect can be improved.

[0027] Further, a plurality of groups of conduction notches 54 are arranged at intervals on the outer side of the sealing part 51. The supporting part 55 is connected to the base of the housing 10. The heat insulation flow channel 21 is communicated to the upper part of the housing 10 through the conduction notches 54. The supporting part 55 adopts a column with a wire groove on the back. The wire groove on the back of the column is closely attached to the housing 10. Among them, through the wire groove on the back of the column, wiring can be carried out inside the housing 10, avoiding the direct contact between the cable and the high-temperature frying bucket 40, resulting in damage. In addition, the wire groove on the back of the column is closely attached to the housing 10, which can prevent the cable from coming out of the wire groove. Embodiment 2

[0028] As shown in the appendix Figures 10-11 In this embodiment, the difference from the above embodiment is that the air inlet 22 is arranged at the bottom of the base 12, and the air inlet 22 is arc-shaped. Moreover, in order to prevent liquid from splashing into the air fryer from the air inlet 22 and prevent foreign objects from directly entering the air fryer from the air inlet 22, a baffle 17 is horizontally arranged below the air inlet 22, so that air can enter below the air inlet 22 from the side of the baffle 17, and then enter the air fryer. Embodiment 3

[0029] As shown in the appendix Figures 12-13As shown, the difference between this embodiment and the above embodiment is that multiple sets of annular protrusions or multiple sets of arc-shaped protrusions 18 are provided at the bottom of the base 12, and the air inlet 22 is arranged on the side surface of the annular protrusions or arc-shaped protrusions 18, so as to prevent liquid from directly splashing into the interior of the air fryer from the air inlet 22. Embodiment Four

[0030] As shown in the atta Figure 14 ched drawing, the difference between this embodiment and the above embodiment is that the air inlet 22 is arranged on the side surface of the bottom of the housing 10, and the air inlet 22 adopts downward air intake. Specifically, the housing 10 includes a housing body 11 and a base 12 provided at the bottom of the housing body 11. A convex edge is provided on the outside of the base 12, and an air intake gap is left between the lower edge of the housing body 11 and the convex edge of the base 12, and the air intake gap forms the air inlet 22. Embodiment Five

[0031] As shown in the atta Figures 15-20 ched drawing, the difference between this embodiment and the above embodiment is that the housing 10 includes a housing body 11 and a base 12 provided at the bottom of the housing body 11. The base 12 is integrally plate-shaped. Among them, using the plate-shaped base 12 can effectively simplify the internal structure compared with the existing air fryer, and can also reduce the processing cost and processing difficulty. Multiple sets of support feet 14 are provided on the bottom surface of the base 12, and the air inlets 22 are circumferentially spaced on the outer edge of the base 12. The lower edge of the housing body 11 is flush with the base 12. Through the lifting of the support feet 14, enough air intake space can be formed between the housing 10 and the placement tabletop to ensure the air intake of the air inlet 22, and at the same time, it can effectively prevent liquid from directly splashing into the interior of the air fryer from the air inlet 22; among them, in order to further reduce the processing and assembly processes, the pot rack 50 is integrally formed with the base 12.

[0032] Principle of cold and hot air exchange and circulation: Refer to the atta Figure 21 ched drawing. By adopting the technical solutions of the above embodiments, the cold and hot air circulation and exchange effect inside the air fryer can be effectively optimized. Among them, when the air fryer is working, the air around the air fryer (low-temperature air in the surrounding environment) enters the interior of the air fryer from the lower air inlet 22 and flows upward as a whole along the heat insulation flow channel 21, and then continuously performs cyclic heat exchange on the residual heat cooked by the heating tube 31, so as to prevent the residual heat from affecting other surrounding electrical appliances. The air that completes this cyclic heat exchange is discharged from the air outlet outside the air fryer. Compared with the traditional air fryer, the temperature of the housing 10 can be reduced by an average of 15 °C. Among them, in the atta Figure 21 ched drawing, the solid line arrow indicates the direction of cyclic heat exchange outside the frying barrel 40, and the dotted line arrow indicates the direction of hot air circulation flow inside the frying barrel 40.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principles and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. An air fryer with a downward air intake, characterized in that, Comprising: A housing (10) with a cooking cavity (20) provided inside; A hot air assembly disposed in the housing (10); A frying bucket (40) detachably placed in the cooking cavity (20); An insulating flow channel (21) that wraps around the lower part of the frying bucket (40) is provided in the cooking cavity (20). The housing (10) is respectively provided with an air inlet (22) and an air outlet (23). The air inlet (22) is located at the lower part of the housing (10). The insulating flow channel (21) is respectively communicated with the air inlet (22) and the air outlet (23). The hot air assembly drives external air to enter the insulating flow channel (21) from the air inlet (22) and is discharged through the air outlet (23).

2. The air fryer with downward air intake according to claim 1, wherein After the lower part of the frying bucket (40) is integrally wrapped in the insulating flow channel (21), the insulating flow channel (21) is in a pot shape, and the lower part of the frying bucket (40) is directly opposite to the inner side wall of the housing (10); The air inlet (22) is provided at the bottom of the housing (10) and is opposite to the bottom of the frying bucket (40).

3. The air fryer with downward air intake according to claim 1, wherein, The housing (10) includes a housing body (11) and a base (12) provided at the bottom of the housing body (11). The air inlet (22) is provided on the base (12). A concave portion (13) is provided in the middle of the bottom surface of the base (12), and multiple groups of support feet (14) are provided in the concave portion.

4. The air fryer with downward air intake according to claim 3, wherein Multiple groups of ridges (15) are provided at intervals on the outer side of the base (12). The outer side of the ridges (15) abuts against the housing body (11), so that multiple groups of gaps (16) are formed between the base (12) and the housing body (11). The multiple groups of gaps (16) constitute the air inlet (22).

5. The air fryer with bottom air intake according to claim 3, wherein The air inlet (22) is provided at the bottom of the base (12). The air inlet (22) is arc-shaped, and a baffle (17) is provided below the air inlet (22).

6. The air fryer with downward air intake according to claim 3, characterized in that Multiple groups of annular protrusions or multiple groups of arc-shaped protrusions (18) are provided at the bottom of the base (12). The air inlet (22) is provided on the side surface of the annular protrusions or arc-shaped protrusions (18).

7. The air fryer with downward air intake according to claim 1, wherein The air inlet (22) is provided on the side surface at the bottom of the housing (10), and the air inlet (22) adopts lower-side air intake.

8. The air fryer with downward air intake according to claim 1, wherein, The housing (10) includes a housing body (11) and a base (12) provided at the bottom of the housing body (11). The base (12) is integrally plate-shaped, and multiple groups of support feet (14) are provided on the bottom surface of the base (12).

9. The air fryer with downward air intake according to claim 1, wherein The hot air assembly includes a heating tube (31), a circulating inner fan blade (32), a heat dissipation fan blade (33), and a driving motor (34). A wind guiding cover (35) that can cover the frying bucket (40) from above is provided in the cooking cavity (20). The heating tube (31) and the circulating inner fan blade (32) are provided in the wind guiding cover (35). The heat dissipation fan blade (33) is provided above the wind guiding cover (35). The external air is driven to enter the insulating flow channel (21) from the air inlet (22) and is discharged through the air outlet (23) by the heat dissipation fan blade (33) or the circulating inner fan blade (32).

10. The air fryer with downward air intake according to claim 1, characterized in that It further includes a pot rack (50), and the pot rack (50) includes a sealing part (51) and a supporting part (55). The sealing part (51) is arranged in the cooking cavity (20) through the supporting part (55). A sealing platform (52) is arranged on the upper part of the sealing part (51). The outer edge of the main body of the frying barrel (40) can be placed above the sealing platform (52). An arc-shaped airtight baffle (53) is arranged on the lower part of the sealing part (51). A plurality of groups of conduction notches (54) are arranged at intervals on the outer side of the sealing part (51). The supporting part (55) is connected to the bottom of the housing (10). The heat insulation flow channel (21) is communicated to the upper part of the housing (10) through the conduction notches (54). The supporting part (55) adopts a column with a wire groove opened on the back surface, and the wire groove on the back surface of the column is closely attached to the housing (10).

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