Air fryer

Abstract

The invention relates to an air fryer. The air fryer comprises a machine shell, an inner pot, a hot air assembly, an air inlet net and a tray. A cooking cavity is formed in the machine shell, the inner pot can be placed in the cooking cavity and taken out of the cooking cavity, the hot air assembly is arranged in the machine shell and located on the side face of the machine shell, the air inlet net is arranged in the machine shell and located between the inner pot and the hot air assembly, the tray is arranged in the inner pot, and the air inlet net is arranged in the machine shell and located between the inner pot and the hot air assembly. The space of the inner pot is divided into a storage area and a suspension area which are arranged up and down, and the storage area and the suspension area are both communicated with the air inlet net. The hot air assembly of the air fryer is not prone to oil stain deposition and does not need to be turned over, and the cooking effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking appliances, and in particular to an air fryer. Background Art

[0002] In the related art, the hot air component of the air fryer is usually arranged on the top of the casing. After the air fryer is used for a long time, oil stains are easily deposited on the fan blades of the hot air component. During the high-temperature cooking process, the oil stains deposited on the fan blades are easy to fall onto the cooked food, which can easily cause food contamination. In addition, since the hot air enters the cooking cavity from top to bottom, it is easy for the upper and lower sides of the food to be heated unevenly, resulting in a poor cooking taste. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the present invention proposes an air fryer, in which the hot air component is not easy to deposit oil stains, and does not need to be turned over, so the cooking effect is better.

[0005] The air fryer of the present invention comprises: a casing, wherein a cooking cavity is arranged in the casing; an inner pot, wherein the inner pot can be placed in the cooking cavity and taken out from the cooking cavity; a hot air component, wherein the hot air component is arranged in the casing and located at a side of the casing; an air inlet net, wherein the air inlet net is arranged in the casing and located between the inner pot and the hot air component; and a tray, wherein the tray is arranged in the inner pot and divides the space of the inner pot into a storage area and a suspended area which are arranged up and down, wherein the storage area and the suspended area are both connected to the air inlet net.

[0006] According to the air fryer of the present invention, since the hot air component is arranged on the side of the casing, the hot air component can be fed with air laterally, so as to reduce the probability of oil stains being deposited on the hot air component, and the oil stains deposited on the hot air component will not fall downward into the cooking cavity. On the other hand, since the tray divides the space of the inner pot into a storage area and a suspended area arranged up and down, the storage area and the suspended area are both connected to the air inlet net. Therefore, part of the hot air transported to the cooking cavity by the air inlet net enters the suspended area, and the other part of the hot air enters the storage area, so that the upper and lower sides of the food are heated evenly, and there is no need to turn the food over during the cooking process, and the cooking effect is better.

[0007] Optionally, the air fryer further comprises a viewing window, which is installed on at least one of the top surface of the casing and the side surface of the casing. The air fryer of the present invention can facilitate users to observe the cooking status of food in real time by arranging the viewing window on the top surface and / or the side surface of the casing, thereby improving the user experience.

[0008] Optionally, the inner pot includes a front wall plate, a bottom plate and two side plates, the front wall plate is installed on the front side of the bottom plate, the two side plates are installed on the left and right sides of the bottom plate respectively, a side of the side plate adjacent to the tray is provided with a stop rib, the stop rib extends along the front and rear direction of the casing, and the tray is slidably supported on the upper side of the stop rib. The air fryer of the present invention can simplify the installation and removal of the tray by setting the inner pot as the above structure. In addition, the side plates can prevent food from directly contacting the inner wall of the casing, so as to facilitate daily cleaning by the user, and the side plates have a certain heat insulation effect, which is conducive to reducing the temperature of the outer wall of the casing.

[0009] Optionally, the inner pot further comprises a handle and a heat preservation plate, wherein the heat preservation plate is arranged at the front side of the front wall plate, and the handle is connected to the heat preservation plate. The air fryer of the present invention can reduce the temperature transmitted from the front wall plate to the handle by arranging the heat preservation plate between the handle and the front wall surface, thereby preventing the user from being scalded and improving the user's experience.

[0010] Optionally, the inner pot includes a front wall plate, a bottom plate and a first baffle plate, the front wall plate is installed on the front side of the bottom plate, the first baffle plate is arranged on the rear side of the bottom plate and is arranged opposite to the air inlet net, the height of the first baffle plate is H1, the hot air component has a fan, the diameter of the fan is D, wherein D / 64≤H1≤D / 8. The air fryer of the present invention can stop the oil stains dripping from the cooking food in the suspended area by designing the first baffle plate with the above parameters, so as to facilitate the cleaning and maintenance of the air fryer in the later stage. On the other hand, since the side of the tray adjacent to the air inlet net will block part of the airflow from flowing into the storage area, the first baffle plate can also block part of the airflow from entering the suspended area and form a windshield structure, thereby balancing the wind pressure in the cooking cavity to reduce the noise, vibration or deformation caused by the unbalanced air duct resistance when the hot air component is out of the air. Problems such as.

[0011] Optionally, the tray includes a tray body and a second baffle, the second baffle is disposed at the rear side of the tray body and arranged opposite to the air inlet net, the second baffle extends upward to a height of H2, the hot air assembly has a fan, the diameter of the fan is D, wherein D / 64≤H2≤D / 8. The air fryer of the present invention can prevent the food in the tray from being burned by the high-heat air by designing the second baffle with the above parameters, and can also ensure the effect of hot air circulation, which is conducive to uniform heating of the food.

[0012] Optionally, the tray is provided with a first ventilation hole and a second ventilation hole, the first ventilation hole and the second ventilation hole are both multiple and arranged at intervals along the circumference of the tray, and the first ventilation hole is arranged on the outside of the second ventilation hole. The air fryer of the present invention is provided with the first ventilation hole and the second ventilation hole on the tray, so that hot air can flow in the up and down directions to improve the uniformity of heating the upper and lower surfaces of the food. Since the first ventilation hole and the second ventilation hole are both multiple and arranged at intervals along the circumference of the tray, and the first ventilation hole is arranged on the outside of the second ventilation hole, the food adjacent to the center of the tray and the food adjacent to the edge of the tray can be heated simultaneously to improve the uniformity of heating the food at different positions.

[0013] Optionally, the first ventilation hole and the second ventilation hole both extend from the center of the tray to the edge of the tray, one of the first ventilation hole and the second ventilation hole is bent in a clockwise direction, and the other of the first ventilation hole and the second ventilation hole is bent in a counterclockwise direction. In this way, the wind speed and air volume of the hot air circulation in the cooking cavity can be further increased, so that the cooking effect of the food is better, and there is no need to turn the food over.

[0014] Optionally, the hot air assembly includes a sealing cover, a driving motor, a fan and a heating element, the sealing cover and the air inlet net form an air guide cavity, the heating element and the fan are both arranged in the air guide cavity, and the driving motor is arranged on the side of the sealing cover away from the air inlet net, and is connected to the fan in a transmission manner. The air fryer of the present invention can reduce the heat transferred from the heating element to the driving motor and ensure the reliability of the driving motor by providing a sealing cover, and the heating element and the fan are both arranged in the air guide cavity, which can reduce the noise of the fan and the driving motor when they are working, and has a better use effect.

[0015] Optionally, the hot air assembly further comprises a motor support seat, the motor support seat is connected to the drive motor, a heat dissipation hole is provided on the side of the housing, a heat conduction channel is provided in the motor support seat, one end of the heat conduction channel is connected to the heat dissipation hole, and the other end of the heat conduction channel is connected to the drive motor. The air fryer of the present invention can discharge the heat generated by the drive motor through the heat dissipation hole through the heat conduction channel, thereby improving the heat dissipation effect of the drive motor and extending the service life of the drive motor.

[0016] Optionally, the air fryer further comprises a touch panel, which is electrically connected to the hot air assembly and is disposed on the top surface of the housing, so that the user can operate and control the air fryer without bending over, which is convenient for the user's daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an air fryer according to an embodiment of the present invention.

[0018] Figure 2 2 is a cross-sectional view of an air fryer according to an embodiment of the present invention.

[0019] Figure 3 It is an exploded view of the air fryer of an embodiment of the present invention after the hot air component is removed.

[0020] Figure 4 It is a schematic diagram of partial parts of an air fryer according to an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of the air fryer without the inner pot according to the embodiment of the present invention.

[0022] Figure 6 2 is a top view of a tray of an air fryer according to an embodiment of the present invention.

[0023] Figure 7 It is a cross-sectional view of the installation of the inner pot and the tray of the air fryer according to the embodiment of the present invention.

[0024] Figure 8 It is an installation cross-sectional view of the inner pot and the tray of the air fryer according to the embodiment of the present invention from another perspective.

[0025] Fig. 9 1 is an exploded view of the inner pot of the air fryer according to an embodiment of the present invention.

[0026] Fig.10 Schematic diagram of a hot air assembly of an air fryer according to an embodiment of the present invention.

[0027] Fig.11 1 is an exploded view of a hot air assembly of an air fryer according to an embodiment of the present invention.

[0028] Fig.12 2 is a side view of a fan of an air fryer according to another embodiment of the present invention.

[0029] Reference numerals:

[0030] 1. Casing; 11. Cooking cavity; 12. Heat dissipation holes; 13. Open mouth; 14. Outer cover; 15. Inner lining;

[0031] 2. Inner pot; 21. Front wall; 22. Bottom plate; 23. Side plate; 231. Stop rib; 24. Handle; 25. Insulation plate; 26. First baffle; 27. Storage area; 28. Suspended area;

[0032] 3. Hot air assembly; 31. Sealing cover; 311. Air guide cavity; 32. Driving motor; 33. Fan; 34. Heating element; 35. Motor support seat; 351. Heat conduction channel;

[0033] 4. Air inlet net;

[0034] 5. tray; 51. tray body; 52. second baffle; 53. first vent hole; 54. second vent hole;

[0035] 6. Visual window;

[0036] 71. Touch panel; 72. Position sensor; 73. Temperature sensor. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] Please refer to the following Figures 1 to 12 An air fryer according to an embodiment of the present invention is described.

[0039] like Figures 1 to 5 As shown, the air fryer of the embodiment of the present invention comprises: a housing 1, an inner pot 2, a hot air assembly 3, an air inlet net 4 and a tray 5. A cooking cavity 11 is provided in the housing 1, the inner pot 2 can be put into the cooking cavity 11 and taken out from the cooking cavity 11, the hot air assembly 3 is provided in the housing 1 and located at the side of the housing 1, the hot air assembly 3 can convey hot air toward the cooking cavity 11, the air inlet net 4 is provided in the housing 1 and located between the inner pot 2 and the hot air assembly 3, the tray 5 is provided in the inner pot 2, and the space of the inner pot 2 is divided into a storage area 27 and a suspended area 28 arranged up and down, and the storage area 27 and the suspended area 28 are both connected to the air inlet net 4.

[0040] It is understandable that the area above the tray 5 constitutes a storage area 27, and the lateral opening of the storage area 27 is opposite to and communicates with the air inlet net 4. The area below the tray 5 constitutes a suspended area 28, and the lateral opening of the suspended area 28 is opposite to and communicates with the air inlet net 4.

[0041] According to the air fryer of the embodiment of the present invention, since the hot air assembly 3 is arranged on the side of the housing 1, the hot air assembly 3 can be fed with air laterally, so as to reduce the probability of oil stains being deposited on the hot air assembly 3, and the oil stains deposited on the hot air assembly 3 will not fall downward into the cooking cavity 11. On the other hand, since the tray 5 divides the space of the inner pot 2 into a storage area 27 and a suspended area 28 arranged up and down, the storage area 27 and the suspended area 28 are both connected to the air inlet net 4. Therefore, part of the hot air transported to the cooking cavity 11 by the air inlet net 4 enters the suspended area 28, and the other part of the hot air enters the storage area 27, so that the upper and lower sides of the food are heated evenly, and there is no need to turn over during the cooking process, and the cooking effect is better. In other words, the hot air assembly 3 can circulate and transport hot air to the storage area 27 and the suspended area 28 at the same time, so as to improve the uniformity of heating of the food on the tray 5.

[0042] like Figure 2 and Figure 5As shown, the air inlet net 4 is vertically placed on the rear side of the cooking cavity 11 to isolate the hot air assembly 3 from the inner pot 2. Under the blocking effect of the air inlet net 4, the user's hand will not directly contact the hot air assembly 3, so as to improve the safety of the air fryer during operation and avoid scalding the user.

[0043] In the example of the present invention, Figure 2 and Figure 5 As shown, the front side of the housing 1 is provided with an opening 13, and the inner pot 2 is retractably installed in the cooking cavity 11. When the user needs to take out the inner pot 2, the user can pull the inner pot 2 out of the cooking cavity 11 in a horizontal direction, and the opening 13 is in an open state. When the inner pot 2 and the housing 1 are installed in place, the inner pot 2 can close the opening 13, so that the cooking cavity 11 forms a sealed space to reduce heat loss.

[0044] Alternatively, if Figure 1 and Figure 2 As shown, the air fryer further includes a viewing window 6, which is installed on at least one of the top surface of the casing 1 and the side surface of the casing 1. The air fryer of the embodiment of the present invention can facilitate users to observe the cooking status of food in real time by arranging the viewing window 6 on the top surface of the casing 1 and / or the side surface of the casing 1, thereby improving the user experience.

[0045] For example, the viewing window 6 is installed on the top surface of the housing 1. For another example, the viewing window 6 is installed on the left side, right side or front side of the housing 1.

[0046] The material of the viewing window 6 can be glass, so as to facilitate daily cleaning by users.

[0047] In the embodiment of the present invention, the visual window 6 is fixedly connected to the housing 1. In other words, the visual window 6 is a non-movable component, thereby improving the overall sealing of the housing 1 and reducing the probability of heat leaking from the gap between the visual window 6 and the housing 1, which is beneficial to improving the working efficiency of the air fryer and reducing the energy consumption of the air fryer.

[0048] Alternatively, if Figure 2 , Figure 8 and Fig. 9 As shown, the inner pot 2 includes a front wall plate 21, a bottom plate 22 and two side plates 23. The front wall plate 21 is installed on the front side of the bottom plate 22, and the two side plates 23 are installed on the left and right sides of the bottom plate 22 respectively. A stop rib 231 is provided on one side of the side plate 23 adjacent to the tray 5. The stop rib 231 extends along the front and rear direction of the housing 1, and the tray 5 is slidably supported on the upper side of the stop rib 231. It can be understood that the front wall plate 21 is used to cover the open opening 13 of the housing 1, one side plate 23 is installed on the left side of the front wall plate 21, and the other side plate 23 is installed on the right side of the front wall plate 21. The stop rib 231 is arranged on the inner side of the side plate 23, and the two stop ribs 231 on the two side plates 23 are located at the same horizontal height.

[0049] When installing the tray 5, the user can place the tray 5 in the inner pot 2 from top to bottom, and the left and right sides of the tray 5 are respectively supported on the left and right stop ribs 231. Alternatively, the user can slide the tray 5 into the inner pot 2 from back to front, and the two stop ribs 231 can guide the sliding of the tray 5.

[0050] The air fryer of the embodiment of the present invention can make the installation and removal of the tray 5 simple by setting the inner pot 2 as the above structure. In addition, the side plate 23 can prevent the food from directly contacting the inner wall of the casing 1, so as to facilitate the daily cleaning of the user, and the side plate 23 has a certain heat insulation effect, which is conducive to reducing the temperature of the outer wall of the casing 1.

[0051] For example, Figure 7 and Fig. 9 As shown, the stop rib 231 can be formed on the side plate 23 by stamping to facilitate the processing and manufacturing of the inner pot 2.

[0052] Furthermore, if Figure 2 , Figure 8 and Fig. 9 As shown, the inner pot 2 further includes a handle 24 and a heat preservation plate 25, the heat preservation plate 25 is arranged on the front side of the front wall plate 21, and the handle 24 is connected to the heat preservation plate 25. The air fryer of the embodiment of the present invention can reduce the temperature transmitted from the front wall plate 21 to the handle 24 by arranging the heat preservation plate 25 between the handle 24 and the front wall plate 21, thereby preventing the user from being scalded and improving the user's experience.

[0053] For example, the screw member is sequentially passed through the handle 24 , the heat preservation plate 25 and the front wall plate 21 to fix the handle 24 , the heat preservation plate 25 and the front wall plate 21 .

[0054] Alternatively, if Figure 8 and Fig. 9 As shown, the inner pot 2 includes a front wall plate 21, a bottom plate 22 and a first baffle plate 26. The front wall plate 21 is installed on the front side of the bottom plate 22, and the first baffle plate 26 is arranged on the rear side of the bottom plate 22 and arranged opposite to the air inlet net 4. It can be understood that the left and right ends of the first baffle plate 26 are respectively connected to the two side plates 23, and the left and right ends of the front wall plate 21 are respectively connected to the two side plates 23 to form a box-shaped structure that opens upward. The first baffle plate 26 is located at the windward position of the suspended area 28. In other words, the first baffle plate 26 is arranged adjacent to the air inlet net 4. The air fryer of the embodiment of the present invention is provided with the first baffle plate 26, so that the suspended area 28 can store the oil stains dripped by the cooking food, so as to avoid the problem of oil stains overflowing from the bottom of the inner pot 2, and facilitate the daily cleaning of the user.

[0055] On the other hand, since the side of the tray 5 adjacent to the air inlet net 4 (i.e., the second baffle 52) will block a portion of the airflow from flowing into the storage area 27, the first baffle 26 can also block a portion of the airflow from entering the suspended area 28 and form a wind shield structure, thereby making the air flow resistance entering the storage area 27 and the air flow resistance entering the suspended area 28 roughly equal, so as to balance the wind pressure in the cooking cavity 11 and reduce the noise, vibration or deformation caused by the unbalanced air duct resistance when the hot air component 3 discharges air.

[0056] Furthermore, if Figure 8 As shown, the height of the first baffle 26 is H1, the hot air assembly 3 has a fan 33, and the diameter of the fan 33 is D, wherein D / 64≤H1≤D / 8. In other words, H1 is selected from 0.0156D to 0.125D.

[0057] For example, H1 can be 0.0156, 0.02, 0.04, 0.06, 0.08, 0.1, or 0.125.

[0058] The inventor of the present invention has found through experimental research that when H1 is less than D / 64, the food oil generated during the cooking process of the air fryer may overflow the first baffle 26, and the airflow resistance of the tray 5 cannot be balanced, resulting in noise, vibration or deformation during the operation of the air fryer. In addition, when H1 is less than D / 64, the speed of the fan 33 matched with the air fryer needs to be lowered accordingly, which makes the selection of the drive motor 32 difficult and the cost high.

[0059] When H1 is greater than D / 8, the circulating hot air flow entering the suspended area 28 will be greatly hindered, thereby causing the hot air circulation effect in the cooking cavity 11 to deteriorate, resulting in the back of the food not being heated evenly, that is, the air fryer cannot achieve the function of not turning over. In addition, when H1 is greater than D / 8, the speed of the fan 33 matched with the air fryer needs to be increased accordingly, which makes it difficult to select the drive motor 32 and the cost is high.

[0060] Therefore, when the air fryer of the embodiment of the present invention sets H1 within the above range, on the one hand, the oil stains dripping from the cooked food can be stopped in the suspended area 28, so as to facilitate the cleaning and maintenance of the air fryer in the later stage.

[0061] On the other hand, since the side of the tray 5 adjacent to the air inlet net 4 will block a portion of the airflow from flowing into the storage area 27, the first baffle 26 can also block a portion of the airflow from entering the suspended area 28 and form a wind shield structure, thereby balancing the wind pressure in the cooking cavity 11 to reduce noise, vibration or deformation caused by unbalanced air duct resistance when the hot air component 3 is exhausting air.

[0062] On the other hand, the effect of the up and down circulation of hot air in the cooking cavity 11 can be ensured, which is beneficial to improving the uniformity of heating of food.

[0063] On the other hand, most of the driving motors 32 can meet the selection requirements, which is beneficial to reducing the production cost of the air fryer.

[0064] Exemplarily, the height difference between the tray 55 and the bottom plate 2222 is H0, H0 is substantially D / 4, and the height of the first baffle 2626 is H1, wherein H1 is equal to H0 / 2, that is, H1 is equal to D / 8.

[0065] Alternatively, if Figure 8 and Fig. 9 As shown, the tray 5 includes a tray body 51 and a second baffle 52, the second baffle 52 is arranged at the rear side of the tray body 51 and is arranged opposite to the air inlet net 4, and the second baffle 52 extends upward. It can be understood that the tray body 51 and the second baffle 52 generally form an L-shaped plate structure. The second baffle 52 is located at the windward position of the storage area 27. In other words, the second baffle 52 is arranged adjacent to the air inlet net 4. The air fryer of the embodiment of the present invention can prevent the food in the tray 5 from being burned by the high-heat air by setting the second baffle 52, and can also ensure the effect of hot air circulation, which is conducive to uniform heating of the food.

[0066] Furthermore, if Figure 8 As shown, the second baffle 52 extends upward to a height H2, the hot air assembly 3 has a fan 33, and the diameter of the fan 33 is D, wherein D / 64≤H2≤D / 8.

[0067] In other words, H2 is selected between 0.0156D and 0.125D.

[0068] For example, H2 can be 0.0156, 0.02, 0.04, 0.06, 0.08, 0.1, or 0.125.

[0069] The inventor of the present invention has found through experimental research that when H2 is less than D / 64, the food near the air inlet net 4 will be burned by high temperature, that is, the food in the tray 5 is easily burned by the high-temperature hot air. At this time, the second baffle 52 has a poor effect in blocking the high-temperature hot air. In addition, the airflow resistance of the first baffle 26 cannot be balanced, resulting in noise, vibration or deformation during the operation of the air fryer.

[0070] When H2 is greater than D / 8, the hot air circulation effect in the cooking cavity 11 will be poor, which is not conducive to uniform heating of food and has low cooking efficiency.

[0071] Therefore, the air fryer in the embodiment of the present invention can prevent the food in the tray 5 from being easily burnt by the high-heat air when H2 is set within the above range: on the one hand,

[0072] On the other hand, it is possible to balance the air flow resistance received by the first baffle 26, and avoid problems such as noise, vibration or deformation during the operation of the air fryer.

[0073] On another hand, it is beneficial to ensure the hot air circulation effect in the cooking cavity 11, improve the cooking efficiency of food, and the food is heated more evenly.

[0074] On yet another hand, it is possible to make most of the drive motors 32 meet the selection requirements, which is beneficial to reducing the production cost of the air fryer.

[0075] Exemplarily, as Figure 8 shown, the height of the front wall plate 21 of the inner pot 2 is generally equal to the height of the fan 33, that is, the height of the front wall plate 21 of the inner pot 2 is D. The height difference between the tray 5 and the bottom plate 22 is H0, and H0 is generally D / 4. Among them, the height of the first baffle 26 is generally D / 8, and the height from the upper end of the first baffle 26 to the bottom surface of the tray 5 is generally D / 8. The height of the second baffle 52 is generally D / 8, and the height from the upper end of the second baffle 52 to the middle position of the front wall plate 21 is generally D / 8.

[0076] The inventor found through experimental test data and numerical simulation methods that the designed height of H2 and the rotational speed n of the drive motor 32, the power P of the heating element 34, and the ventilation area A of the air inlet net 4 satisfy a functional relationship. Through fitting analysis of the experimental data, it is obtained that: H2 = D / 8 - K / (n·P·A). In the above formula, all values are absolute values, and the value of H2 cannot be negative.

[0077] In the formula, D is the diameter of the fan 33, m; K is the unit conversion coefficient, 0 < K < 5000 (for example, K is 2000); n is the rotational speed of the drive motor 32, r / min; P is the power of the heating element 34, W; A is the area of the air inlet net 4, m 2 。

[0078] It can be understood that for these parameters D, n, P, and A, one of them can be used as the independent variable and H2 as the dependent variable to perform parameter matching. In other words, the parameter design of H2 is related to these parameters D, n, P, and A.

[0079] When H2 satisfies the numerical range of D / 64 ≤ H2 ≤ D / 8, it is also necessary to take into account these parameters D, n, P, and A. Or, after knowing these parameters D, n, P, and A, the design parameters of H2 can also be obtained according to the above formula. Similarly, when four of the parameters H2, D, n, P 、 A are determined, the other parameter can be obtained according to the above formula.

[0080] The inventor of the present application found through experimental research that when the above parameters of the air fryer (H2, D, n, P 、 A) When the above formula is met, the thermal cycle efficiency of the air fryer can be higher, the food cooking effect is better, and the energy consumption is lower.

[0081] For example, the inventors of the present application use the fan power P, the rotation speed n, the ventilation area A and the diameter D of the fan 33 as independent variables, and obtain the design height of H2 through experiments as shown in the following table:

[0082] The inventor of the present application uses the fan power P as an independent variable and obtains the design height of H2 through experiments as shown in the following table:

[0083] Table 1 Experimental test data - (when fan power changes) Design height of H2

[0084]

[0085] The inventor of the present application uses the rotation speed n as the independent variable and obtains the design height of H2 through experiments as shown in the following table:

[0086] Table 2 Experimental test data - (when fan speed changes) Design height of H2

[0087]

[0088] The inventor of the present application uses the air permeability area A as an independent variable and obtains the design height of H2 through experiments as shown in the following table:

[0089] Table 3 Experimental test data - (when the air permeability area A changes) Design height of H2

[0090]

[0091] The inventor of the present application uses the diameter D of the fan 33 as an independent variable and obtains the design height of H2 through experiments as shown in the following table:

[0092] Table 4 Experimental test data - (when the diameter D of the fan 33 changes) Design height of H2

[0093]

[0094] It is understandable that the inventors of the present application have found through experimental research that when the speed n of the driving motor 32 is higher, or the power P of the heating element 34 is higher, or the air permeability area A of the air inlet net 4 is larger, the height and thickness of the blocking structure (i.e., the second baffle 52) on the side of the tray 5 facing the hot air need to be increased, and the design height of H2 satisfies the following functional relationship: H2 = D / 8-K / (n·P·A)

[0095] In some embodiments, Figure 6 and Fig. 9 As shown, the tray 5 is provided with a first ventilation hole 53 and a second ventilation hole 54, both of which are multiple and arranged at intervals along the circumference of the tray 5, and the first ventilation hole 53 is arranged outside the second ventilation hole 54. It can be understood that the multiple ventilation holes form an annular ring, the second ventilation hole 54 is arranged in the annular ring, and the multiple second ventilation holes 54 are arranged at intervals around the circumference of the annular ring.

[0096] The air fryer of the embodiment of the present invention is provided with a first ventilation hole 53 and a second ventilation hole 54 on the tray 5, so that hot air can flow in the up and down direction to improve the uniformity of heating of the upper and lower surfaces of the food. Since the first ventilation holes 53 and the second ventilation holes 54 are multiple and arranged at intervals along the circumference of the tray 5, the first ventilation holes 53 are provided on the outside of the second ventilation holes 54, and the food adjacent to the center of the tray 5 and the food adjacent to the edge of the tray 5 can be heated simultaneously to improve the uniformity of heating of the food at different positions on the tray 5.

[0097] Furthermore, if Figure 6 As shown, the first vent hole 53 and the second vent hole 54 both extend from the center of the tray 5 to the edge of the tray 5, one of the first vent hole 53 and the second vent hole 54 is bent in a clockwise direction, and the other of the first vent hole 53 and the second vent hole 54 is bent in a counterclockwise direction. This can further increase the wind speed and air volume of the hot air circulation in the cooking cavity 11, so that the cooking effect of the food is better, and there is no need to turn the food over.

[0098] In the example of the present invention, the extension length of a single first ventilation hole 53 is greater than the extension length of a single second ventilation hole 54, and the width of a single first ventilation hole 53 is greater than the width of a single second ventilation hole 54, thereby further ensuring that the food at different positions on the tray 5 is heated evenly.

[0099] In some embodiments, Figure 2 , Fig.10 and Fig.11 As shown, the hot air assembly 3 includes a sealing cover 31, a driving motor 32, a fan 33 and a heating element 34. The sealing cover 31 and the air inlet net 4 form an air guide cavity 311. The heating element 34 and the fan 33 are both arranged in the air guide cavity 311. The driving motor 32 is arranged on the side of the sealing cover 31 away from the air inlet net 4, and is in transmission connection with the fan 33. It can be understood that the heating element 34 is arranged on the front side of the fan 33. When the fan 33 rotates, the fan 33 can transfer the heat generated by the heating element 34 to the cooking cavity 11. The driving motor 32 is located at the rear side of the sealing cover 31. The output shaft of the driving motor 32 passes through the sealing cover 31 and is connected to the fan 33 to drive the fan 33 to rotate.

[0100] The air fryer of the embodiment of the present invention is provided with a sealing cover 31, and the heating element 34 and the fan 33 are both arranged in the air guide cavity 311, which can not only reduce the heat transferred from the heating element 34 to the driving motor 32 to ensure the reliability of the driving motor 32, but also reduce the noise of the fan 33 and the driving motor 32 during operation, and the use effect is better.

[0101] For example, the heating element 34 is a disc-shaped heating tube.

[0102] Alternatively, if Figure 2 , Fig.10 and Fig.11 As shown, the hot air assembly 3 further includes a motor support seat 35, the motor support seat 35 is connected to the drive motor 32, a heat dissipation hole 12 is provided on the side of the housing 1, a heat conduction channel 351 is provided in the motor support seat 35, one end of the heat conduction channel 351 is connected to the heat dissipation hole 12, and the other end of the heat conduction channel 351 is connected to the drive motor 32. The air fryer of the embodiment of the present invention can discharge the heat generated by the drive motor 32 through the heat dissipation hole 12 through the heat conduction channel 351, thereby improving the heat dissipation effect of the drive motor 32 and extending the service life of the drive motor 32.

[0103] For example, the motor support base 35 is installed on the sealing cover 31 through a screw member, so as to facilitate the installation and removal of the motor support base 35, and the stability after installation is good.

[0104] The fan 33 may be in the form of a turbine blade or a thinner axial flow blade. Fig.12 As shown, the fan 33 uses thinner blades to reduce the load on the output shaft of the driving motor 32 and save space in the housing 1.

[0105] Alternatively, if Figure 1 and Figure 4 As shown, the air fryer further includes a touch panel 71, which is electrically connected to the hot air assembly 3 and is disposed on the top surface of the housing 1. Thus, the user can operate and control the air fryer without bending over, which is convenient for the user's daily use.

[0106] Specifically, Figure 2 , Figure 4 and Figure 5 As shown, the air fryer further includes a temperature sensor 73 and a position sensor 72. The temperature sensor 73 is disposed in the housing 1 and is used to monitor the temperature in the housing 1 in real time. The position sensor 72 is disposed at the position of the opening 13 of the housing 1 to detect whether the inner pot 2 is installed in place. The air fryer of the embodiment of the present invention can improve the intelligence of the air fryer by providing the temperature sensor 73 and the position sensor 72, facilitate the user's daily operation, and improve the user experience.

[0107] like Figure 3 and Figure 4 As shown, the housing 1 includes an outer cover 14 and an inner liner 15, the inner liner 15 is installed in the outer cover 14, the inner liner 15 is generally in an inverted n-shaped structure, and the visual window 6 is sealed on the inner liner 15 and forms a cooking cavity 11 with the inner liner 15. The air fryer of the embodiment of the present invention can reduce the temperature of the surface of the outer cover 14 by setting the housing 1 as the above structure, which can reduce the energy consumption of the air fryer on the one hand and reduce the risk of scalding the user when the air fryer is working on the other hand.

[0108] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, 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 limiting the present invention.

[0109] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0110] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0111] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0112] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0113] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An air fryer, characterized in that: include: A casing (1), wherein a cooking cavity (11) is provided in the casing (1); An inner pot (2), the inner pot (2) being capable of being placed in the cooking cavity (11) and being taken out of the cooking cavity (11); A hot air component (3), the hot air component (3) being arranged in the casing (1) and located on a side surface of the casing (1); An air inlet net (4), the air inlet net (4) being arranged in the casing (1) and between the inner pot (2) and the hot air assembly (3); A tray (5), the tray (5) being arranged on the inner pot (2) and dividing the space of the inner pot (2) into a storage area (27) and a suspended area (28) arranged up and down, the storage area (27) and the suspended area (28) both being connected to the air inlet net (4).

2. The air fryer according to claim 1, characterized in that: The air fryer further comprises a viewing window (6), wherein the viewing window (6) is mounted on at least one of the top surface of the casing (1) and the side surface of the casing (1).

3. The air fryer according to claim 1, characterized in that: The inner pot (2) comprises a front wall plate (21), a bottom plate (22) and two side plates (23); the front wall plate (21) is mounted on the front side of the bottom plate (22); the two side plates (23) are mounted on the left and right sides of the bottom plate (22) respectively; a stop rib (231) is provided on a side of the side plate (23) adjacent to the tray (5); the stop rib (231) extends along the front-rear direction of the casing (1); and the tray (5) is slidably supported on the upper side of the stop rib (231).

4. The air fryer according to claim 3, characterized in that: The inner pot (2) further comprises a handle (24) and a heat-insulating plate (25); the heat-insulating plate (25) is arranged on the front side of the front wall plate (21); and the handle (24) is connected to the heat-insulating plate (25).

5. The air fryer according to claim 1, characterized in that: The inner pot (2) comprises a front wall plate (21), a bottom plate (22) and a first baffle plate (26); the front wall plate (21) is mounted on the front side of the bottom plate (22); the first baffle plate (26) is arranged on the rear side of the bottom plate (22) and is arranged opposite to the air inlet net (4); the height of the first baffle plate (26) is H1; the hot air assembly (3) has a fan (33); the diameter of the fan (33) is D, wherein D / 64≤H1≤D / 8.

6. The air fryer according to claim 1, characterized in that: The tray (5) comprises a tray body (51) and a second baffle (52), wherein the second baffle (52) is arranged at the rear side of the tray body (51) and is arranged opposite to the air inlet net (4), and the second baffle (52) extends upward to a height of H2. The hot air component (3) comprises a fan (33), and the diameter of the fan (33) is D, wherein D / 64≤H2≤D / 8.

7. The air fryer according to claim 1, characterized in that: The tray (5) is provided with a first ventilation hole (53) and a second ventilation hole (54); the first ventilation hole (53) and the second ventilation hole (54) are both multiple and arranged at intervals along the circumference of the tray (5); the first ventilation hole (53) is arranged on the outside of the second ventilation hole (54).

8. The air fryer according to claim 7, characterized in that: The first vent hole (53) and the second vent hole (54) both extend from the center of the tray (5) to the edge of the tray (5), one of the first vent hole (53) and the second vent hole (54) is bent in a clockwise direction, and the other of the first vent hole (53) and the second vent hole (54) is bent in a counterclockwise direction.

9. The air fryer according to any one of claims 1 to 8, characterized in that: The hot air assembly (3) comprises a sealing cover (31), a driving motor (32), a fan (33) and a heating element (34); the sealing cover (31) and the air inlet net (4) form an air guide cavity (311); the heating element (34) and the fan (33) are both arranged in the air guide cavity (311); the driving motor (32) is arranged on a side of the sealing cover (31) away from the air inlet net (4) and is transmission-connected to the fan (33).

10. The air fryer according to claim 9, characterized in that: The hot air assembly (3) further comprises a motor support seat (35), the motor support seat (35) being connected to the drive motor (32), a heat dissipation hole (12) being provided on the side of the housing (1), a heat conduction channel (351) being provided inside the motor support seat (35), one end of the heat conduction channel (351) being connected to the heat dissipation hole (12), and the other end of the heat conduction channel (351) being connected to the drive motor (32); And / or, the air fryer further comprises a touch panel (71), wherein the touch panel (71) is electrically connected to the hot air assembly (3) and is disposed on the top surface of the housing (1).

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