Air fryer capable of uniformly heating food

Abstract

The utility model relates to an air fryer capable of uniformly heating food, which comprises a cooking container and a hot air assembly, a hot air inlet and an air outlet channel are arranged on the cooking container, and a hot air internal circulation channel is arranged between the cooking container and the hot air assembly, so that the food in the cooking container is heated by hot air; the cooking container has a vertical undetermined placement state and a side vertical use placement state, and the cooking container is rotationally arranged on the air fryer; the cooking container is in a side-standing use and placement state, the cooking container rotates, the hot air assembly is started and drives airflow in the cooking container to circularly enter the space between the cooking container and the hot air assembly through the hot air inner circulation channel, manual operation is not needed in the frying process, and the cooking container rotates in a side-standing mode; and food in the cooking container is effectively driven to be turned in the cooking container. Hot air is sprayed into the cooking container from the bottom of the cooking container at high pressure, it is ensured that food makes comprehensive and continuous contact with the hot air, and therefore the uniformity and high efficiency of frying the food through the air fryer are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating and cooking food, and particularly relates to an air fryer for uniformly heating food. Background Art

[0002] The core principle of an air fryer is to use high-speed circulating hot air to replace the oil in traditional frying for cooking food. Specifically, one or more electric heaters are installed inside the air fryer. After being powered on, they quickly heat up and conduct heat to the surrounding air. At the same time, powerful fans are equipped inside the air fryer. These fans evenly distribute the heated air on the surface of the food by rotating quickly. The hot air circulates and flows in a closed space, using the oil in the food itself or a small amount of added oil for frying, making the surface of the food golden and crispy, achieving an effect similar to traditional frying.

[0003] Currently, while enjoying convenient cooking, air fryers on the market generally face the challenge of uneven frying and roasting of food, which is mainly due to their limited cooking space. The limitation of the single cooking capacity makes large-scale cooking impractical, forcing users to process in batches, which not only takes time and effort but also increases the complexity of operation. More significantly, the close arrangement of the food in the frying basket directly hinders the smooth circulation of hot air, resulting in uneven heating of the food and greatly reducing the cooking quality. It should be noted that simply relying on expanding the cooking space is not the solution. Although a larger space can theoretically accommodate more ingredients, the complex distribution and flow law of hot air in the air fryer are deeply affected by multiple factors such as the layout of heating elements, delicate flow guiding design, types of ingredients and their arrangement methods. This means that even if the space is expanded, new problems such as uneven heating, low cooking efficiency and increased energy consumption may still be faced. Therefore, air fryer users often need to take active measures during the cooking process, such as manually turning the food in a timely manner, to ensure that each side can evenly contact the hot air, so as to achieve a more ideal cooking uniformity. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an air fryer for uniformly heating food. During the frying process, no manual operation is required. When the cooking container is in operation, the cooking container rotates in a side-standing manner, effectively driving the food inside the cooking container to turn. At the same time, hot air is sprayed into the cooking container from the bottom at high pressure, forming a strong hot air circulation, ensuring full and continuous contact between the food and the hot air, so as to achieve the uniformity and high efficiency of the air fryer for frying food.

[0005] An air fryer designed for this purpose to heat food evenly comprises a cooking container and a hot air component, wherein the hot air component is arranged below the cooking container, the cooking container is provided with a hot air inlet and an air outlet, and the hot air component is provided with an air inlet and a hot air outlet;

[0006] The hot air inlet is arranged on the inner bottom wall of the cooking container;

[0007] The air outlet, the air inlet, the hot air outlet and the hot air inlet are sequentially connected to form a hot air internal circulation channel between the cooking container and the hot air component, so as to heat the food in the cooking container with hot air;

[0008] The cooking container has an upright waiting placement state and a sideways use placement state, and the cooking container is rotatably arranged on the air fryer;

[0009] The cooking container is in a side-standing use placement state, and the cooking container performs a rotational motion, and the hot air component is started and drives the airflow in the cooking container to circulate through the hot air internal circulation channel into between the cooking container and the hot air component.

[0010] The cooking container comprises a frying basket for loading food, a protrusion is arranged on the bottom wall of the frying basket, the protrusion extends upwardly along the bottom wall of the frying basket and is arranged on the bottom wall of the frying basket, a vent forming a hot air inlet and connected to the inner cavity of the frying basket is arranged on the protrusion, a plurality of vents are provided, and the plurality of vents are arranged on the outer peripheral surface of the protrusion in a circular distribution.

[0011] The cooking container comprises a frying basket provided with a paddle, which is spirally, obliquely arc-shaped or vertically arranged on the inner wall of the frying basket; the cooking container is in a side-standing use placement state and performs a rotating motion, and the paddle acts on food in the frying basket to turn the food in the frying basket; the unique side-standing rotation mode of the frying basket and the built-in paddle complement each other, effectively promoting uniform turning of food during the cooking process and avoiding local overheating of food.

[0012] The cooking container comprises an inner cavity sleeved on the outer peripheral side of the frying basket, and an air outlet is formed between the inner side of the inner cavity and the outer side of the frying basket;

[0013] A supporting element is arranged under the cooking container, and a gear set which is transmission-connected with the motor is arranged on the supporting element. The motor drives the supporting element and the cooking container to rotate through the gear set, thereby reducing manual intervention in turning over the food in the cooking container.

[0014] The hot air assembly is provided with a connecting portion for inserting the supporting element, the connecting portion is provided with a bearing, and the supporting element is provided with an axial hole that cooperates with the bearing. When the supporting element and the cooking container rotate, a rotational fit is formed between the supporting element and the bearing, so that the supporting element and the cooking container rotate smoothly and avoid rotation noise.

[0015] The support element includes an upper support member and a lower support member disposed below the frying basket. The bottom of the frying basket is supported on the upper support member, and the inner side of the inner cavity abuts against the outer side of the upper support member.

[0016] A coating structure is provided at the mating portion between the upper support member and the lower support member, and a sealed fit is formed between the upper support member and the lower support member through the coating structure.

[0017] The gear set includes a first gear disposed on the lower support member and a second gear meshing with the first gear, and the second gear is connected to the motor shaft of the motor.

[0018] Perforations communicating with the air outlet duct are provided on both the upper support member and the lower support member.

[0019] A positioning portion is provided between the upper support member and the frying basket. The frying basket is positioned and supported on the upper support member through the positioning portion. When the support element and the cooking container make a rotational movement, the upper support member drives the frying basket to make a synchronous rotational movement through the positioning portion. The positioning portion plays a role in positioning and installing the frying basket and the like on the upper support member, and can also prevent the upper support member from not driving the frying basket to rotate during rotation, effectively preventing relative rotation between the support element and the cooking container.

[0020] A ventilation duct communicating with the air inlet of the hot air assembly is formed between the upper support member and the lower support member.

[0021] The hot air assembly includes a volute. An exhaust port communicating with the air outlet duct is provided on the volute. A support member is provided below the hot air assembly. An air exhaust port communicating with the outside air is provided on the support member. The exhaust port, the air exhaust port and the outside air are sequentially communicated, and excessive oil fume and water vapor during the frying process can be discharged.

[0022] The hot air assembly further includes a wind wheel disposed in the volute. A volute cover is provided on the volute. The volute cover is provided with a convex platform corresponding to the hot air inlet of the bottom of the cooking container. An air vent forming a hot air outlet is provided on the outside of the convex platform. The convex platform extends upward along the top of the volute cover. The volute is provided with a sunken groove. A heating cavity for limiting and installing a heating tube is formed between the inner sides of the sunken groove and the convex platform. The volute cover is covered on the top of the volute to encapsulate the wind wheel between the volute and the volute cover. A volute air duct is formed between the volute and the volute cover. The air inlet is provided on the volute cover. The air inlet, the volute air duct, the heating cavity and the air vent are sequentially communicated.

[0023] The heating tube is cleverly designed and installed on one side of the wind wheel. The heating tube is relatively disposed on the side of the wind wheel air outlet to ensure that hot air can directly and efficiently flow through the heating tube and be heated. The precise matching of the positions of the wind wheel and the heating tube, supplemented by an optimized volute air duct diversion design (it can be understood that there are arc-shaped diversion ribs or arc surfaces and other design structures in the volute), greatly improves the smoothness and efficiency of the air flow.

[0024] A cooling fan blade is provided inside the supporting member, and a driving motor is provided below the supporting member. The driving shaft of the driving motor penetrates through the supporting member and the volute, and the driving shaft of the driving motor is in transmission connection with the cooling fan blade and the wind wheel.

[0025] A temperature sensor is provided on one side of the bottom of the hot air assembly corresponding to the air inlet for the hot air circulation to detect the temperature at the air inlet of the hot air assembly. The temperature sensor is equivalent to detecting the hot air temperature. When the hot air temperature reaches the preset frying temperature, the heating tube stops heating.

[0026] The cooking container is arranged inside the machine shell; a support base and a support ring for cooperatively supporting the cooking container are provided below the cooking container. The support ring is located above the support base, and the hot air assembly is installed in a limited way between the support base and the support ring; the support base is provided with an inclined support portion and a vertical support portion;

[0027] The vertical support portion is detachably, rotatably or telescopically arranged on the support base; the machine shell is sleeved outside the cooking container, the support base and the support ring and covers to the position of the inclined support portion of the support base;

[0028] The vertical support portion is disassembled, rotated or telescoped on the support base to open and close the inclined support portion on the support base, so as to switch between the upright waiting placement state and the side-standing use placement state of the cooking container;

[0029] The body of the air fryer is equipped with a convenient design of the vertical support portion. When the air fryer is in a non-use state, the vertical support portion can be easily installed, rotated or pulled down and slid on the support base to make the whole air fryer stand upright (the cooking container is in the upright waiting placement state), effectively saving the space for storing the air fryer; when operating the air fryer, only need to easily disassemble, rotate or pull up and slide the vertical support portion on the support base, and the whole air fryer will switch to a side-standing posture (the cooking container is in the side-standing use placement state), and with the side-standing rotation function of the frying basket, the ingredients can be evenly turned over to improve the cooking effect;

[0030] A supporting element is provided between the bottom of the cooking container and the support ring. One side of the supporting element is fixedly connected to the bottom of the cooking container, and the other side of the supporting element forms a point-contact supporting fit with the support ring through a ball; the supporting element rotates synchronously with the cooking container, and the supporting element is in rolling contact with the ball;

[0031] A cover body assembly is provided at the top opening of the cooking container. The cover body assembly covers the top opening of the cooking container. The outer ring part of the cover body assembly is fixedly connected to the machine shell. A cooling channel is formed between the outermost side of the cooking container and the inner side of the machine shell. And a plurality of serrated portions forming heat dissipation openings are provided at the position where the cover body assembly corresponds to the cooperation with the machine shell. The heat dissipation openings communicate with the cooling channel. When the cooking container is heating food, the cooling channel communicates with the outside air through the heat dissipation openings, which is convenient for cooling the cooking container;

[0032] The bottom of the outer ring part of the cover assembly is supported on the top of the cooking container, and rolling elements are provided at the supporting fit between the two. When the cooking container rotates, the cooking container is in rolling contact with the rolling elements. Since the outer ring part of the cover is fixedly connected to the housing, by providing the rolling elements, a relative rotational movement is formed between the cooking container and the outer ring part of the cover assembly.

[0033] The utility model has the following beneficial effects:

[0034] The impeller is firmly fixed on the volute. The heating tube is ingeniously designed and installed on one side of the impeller. The heating tube is relatively placed on the side of the impeller air outlet to ensure that the hot air can directly and efficiently flow through the heating tube and be heated. The precise matching of the positions of the impeller and the heating tube, supplemented by the optimized volute air duct diversion design (which can be understood as having arc-shaped diversion ribs or arc surfaces and other design structures inside the volute), greatly improves the smoothness and efficiency of the air flow. This installation strategy not only compresses the space between the heating tube and the impeller, but also carefully plans the path of the hot air, so that after the air is strongly accelerated by the impeller, it can be instantly heated by the heating tube and evenly distributed into the inside of the frying basket through the louvers at the bottom of the frying basket. The bottom of the inner cavity body is supported on the lower support member, and the inner cavity body is sealed and rotatable. After the frying basket is placed, the motor that drives the inner cavity body and the lower support member to rotate starts, and the frying basket rotates synchronously with the inner cavity body. The unique side-standing rotation mode of the frying basket and the built-in paddles complement each other, effectively promoting the uniform turning of the food during the cooking process and avoiding local overheating of the food. The impeller rotates at a high speed, strongly pushing the air between the inner cavity body and the frying basket to converge towards the heating tube. After the air is heated, it penetrates into the inside of the frying basket through the specially provided louvers at the bottom of the frying basket. As the food in the frying basket turns, the hot air climbs from the bottom, shuttles between the foods, and reaches the top of the frying basket. This hot air is automatically sucked in and re-participates in the circulation heating process by using the gap space between the frying basket and the cavity and the strong negative pressure effect generated by the air inlet of the blower. It is worth mentioning that a temperature sensor is cleverly configured near the air inlet of the impeller to monitor the temperature of the hot air at the air inlet in real time. Once the preset food production temperature is reached, the heating tube will intelligently pause working to maintain a suitable hot air environment; if the standard is not reached, the heating tube will continue to heat stably. In this way, the heated hot air continuously comes into close contact with the food until the food is perfectly fried, presenting a mouthwatering crispy texture. Description of the Drawings

[0035] Figure 1 It is a three-dimensional cross-sectional structure schematic diagram of an air fryer according to an embodiment of the utility model.

[0036] Figure 2 It is a three-dimensional cross-sectional structure schematic diagram of a frying basket according to an embodiment of the utility model.

[0037] Figure 3Schematic diagram of the assembly structure of the frying basket, hot air assembly and supporting element according to an embodiment of the present utility model.

[0038] Figure 4 Schematic diagram of the three-dimensional structure of the upper support member according to an embodiment of the present utility model.

[0039] Figure 5 Schematic diagram of the three-dimensional structure of the hot air assembly according to an embodiment of the present utility model.

[0040] Figure 6 Schematic diagram of the three-dimensional structure of the hot air assembly with the volute cover removed according to an embodiment of the present utility model.

[0041] Figure 7 Schematic diagram of the three-dimensional cross-sectional structure of the air fryer from another direction according to an embodiment of the present utility model.

[0042] Figure 8 Schematic diagram of the structure of the air fryer in a side-standing state according to an embodiment of the present utility model.

[0043] Figure 9 Schematic diagram of the three-dimensional structure of the support base and the support ring cooperating with the supporting element to support the cooking container according to an embodiment of the present utility model. Detailed implementation manners

[0044] The present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0045] Refer to Figures 1-9 , an air fryer for uniformly heating food, comprising a cooking container 1 and a hot air assembly 2, the hot air assembly 2 is arranged below the cooking container 1, a hot air inlet 3 and an air outlet duct 4 are arranged on the cooking container 1, and an air inlet 5 and a hot air outlet 6 are arranged on the hot air assembly 2;

[0046] The hot air inlet 3 is arranged on the inner bottom wall of the cooking container 1;

[0047] The air outlet duct 4, the air inlet 5, the hot air outlet 6 and the hot air inlet 3 are sequentially communicated to form a hot air internal circulation channel between the cooking container 1 and the hot air assembly 2, so as to realize hot air heating of the food in the cooking container 1;

[0048] The cooking container 1 has an upright waiting placement state and a side-standing use placement state, and the cooking container 1 is rotatably arranged on the air fryer;

[0049] When the cooking container 1 is in the side-standing use placement state, the cooking container 1 makes a rotational movement, the hot air assembly 2 is started and drives the air flow in the cooking container 1 to circulate through the hot air internal circulation channel and enter between the cooking container 1 and the hot air assembly 2.

[0050] The cooking container 1 includes a frying basket 7 for loading food, a protrusion 8 is provided on the bottom wall of the frying basket 7, the protrusion 8 extends upward along the bottom wall of the frying basket 7 and is arranged on the bottom wall of the frying basket 7, a vent 9 is provided on the protrusion 8 to form a hot air inlet 3 and communicate with the inner cavity of the frying basket 7, a plurality of vents 9 are provided, and the plurality of vents 9 are arranged on the outer peripheral surface of the protrusion 8 in a circular distribution.

[0051] The cooking container 1 includes a frying basket 7 provided with a paddle 10, which is spirally, obliquely arc-shaped or vertically arranged on the inner wall of the frying basket 7; the cooking container 1 is in a sideways use placement state and performs a rotating motion, and the paddle 10 acts on the food in the frying basket 7 to flip the food in the frying basket 7.

[0052] The cooking container 1 comprises an inner cavity 11 sleeved on the outer peripheral side of the frying basket 7, and an air outlet 4 is formed between the inner side of the inner cavity 11 and the outer side of the frying basket 7;

[0053] A supporting element is provided below the cooking container 1 , and a gear set 15 drivingly connected to a motor 16 is provided on the supporting element. The motor 16 drives the supporting element and the cooking container 1 to rotate through the gear set 15 .

[0054] The hot air assembly 2 is provided with a connecting portion for inserting the supporting element, the connecting portion is provided with a bearing 17, and the supporting element is provided with an axial hole that cooperates with the bearing 17. When the supporting element and the cooking container 1 rotate, a rotational fit is formed between the supporting element and the bearing 17.

[0055] The supporting element includes an upper supporting member 12 and a lower supporting member 13 disposed below the frying basket 7, the bottom of the frying basket 7 is supported on the upper supporting member 12, and the inner side of the inner cavity 11 abuts against the outer side of the upper supporting member 12;

[0056] A covering structure 14 is provided at the joint between the upper support member 12 and the lower support member 13, and a sealing fit is formed between the upper support member 12 and the lower support member 13 through the covering structure 14;

[0057] In this embodiment, the upper support member 12 is provided with a flange extending downward, and the flange covers the outer edge of the lower support member 13 to form a covering structure 14 .

[0058] In this embodiment, the inner cavity 11 is fixed to the upper support member 12 by means of positioning sheets and screws or rivets.

[0059] The gear set 15 includes a first gear disposed on the lower support 13, and a second gear meshing with the first gear, and the second gear is connected to the motor shaft of the motor 16;

[0060] The upper support member 12 and the lower support member 13 are both provided with a through hole 18 connected to the air outlet 4;

[0061] A positioning part 19 is provided between the upper support member 12 and the frying basket 7. The frying basket 7 is positioned and supported on the upper support member 12 through the positioning part 19. When the support element and the cooking container 1 make a rotational movement, the upper support member 12 drives the frying basket 7 to make a synchronous rotational movement through the positioning part 19;

[0062] In this embodiment, the positioning part includes a groove provided at the bottom of the frying basket 7 and a positioning boss provided on the upper support member 12. When the positioning boss is positioned in the groove, the frying basket 7 is positioned and installed on the upper support member 12.

[0063] A ventilation duct 20 communicating with the air inlet 5 of the hot air assembly 2 is formed between the upper support member 12 and the lower support member 13.

[0064] The hot air assembly 2 includes a volute 21, and an exhaust port 28 communicating with the air outlet duct 4 is provided on the volute 21; a supporting member 31 is provided below the hot air assembly 2, and an air outlet 32 communicating with the outside air is provided on the supporting member 31. The exhaust port 28, the air outlet 32 and the outside air are communicated in sequence.

[0065] The hot air assembly 2 further includes a wind wheel 22 provided in the volute 21. A volute cover 23 is provided on the volute 21. A boss 24 corresponding to the hot air inlet 3 at the bottom of the cooking container 1 is provided on the volute cover 23. An air vent 25 forming a hot air outlet 6 is provided outside the boss 24. The boss 24 extends upward along the top of the volute cover 23. A sunken groove 27 is provided on the volute 21. A heating cavity for limiting and installing the heating tube 26 is formed between the inner sides of the sunken groove 27 and the boss 24; the volute cover 23 is covered on the top of the volute 21 so that the wind wheel 22 is encapsulated between the volute 21 and the volute cover 23; a volute air duct 29 is formed between the volute 21 and the volute cover 23; the air inlet 5 is provided on the volute cover 23, and the air inlet 5, the volute air duct 29, the heating cavity and the air vent 25 are communicated in sequence;

[0066] The heating tube 26 is provided on one side of the air outlet of the wind wheel 22;

[0067] A cooling fan blade 33 is provided in the supporting member 31. A driving motor 34 is provided below the supporting member 31. The driving shaft of the driving motor 34 penetrates through the supporting member 31 and the volute 21, and the driving shaft of the driving motor 34 is in transmission connection with the cooling fan blade 33 and the wind wheel 22.

[0068] A temperature sensor 30 is provided on one side of the bottom of the hot air assembly 2 corresponding to the side where the hot air circulates and enters the air inlet 5 to detect the temperature at the air inlet 5 of the hot air assembly 2.

[0069] The cooking container 1 is arranged inside the housing 35; a support base 36 and a support ring 37 for cooperatively supporting the cooking container 1 are provided below the cooking container 1, the support ring 37 is located above the support base 36, and the hot air assembly 2 is limit-mounted between the support base 36 and the support ring 37; an inclined support portion 38 and a vertical support portion 39 are provided on the support base 36;

[0070] The vertical support portion 39 is detachably, rotatably or telescopically arranged on the support base 36; the housing 35 is sleeved outside the cooking container 1, the support base 36 and the support ring 37 and covers to the position of the inclined support portion 38 of the support base 36;

[0071] The vertical support portion 39 is disassembled, rotated or telescoped on the support base 36 to open and close the inclined support portion 38 on the support base 36, so as to switch the cooking container 1 between the standing waiting placement state and the side-standing use placement state;

[0072] When the cooking container 1 is in the standing waiting placement state, the vertical support portion 39 and the housing 35 serve as the first support feet for supporting the entire air fryer; when the cooking container 1 is in the side-standing use placement state, the inclined support portion 38 serves as the second support feet for supporting the entire air fryer.

[0073] In this embodiment, the vertical support portion 39 is detachably mounted on the support base 36 by a buckle, or the vertical support portion 39 is arranged on the support base 36 by being turned up and down through a rotating shaft, or the vertical support portion 39 is arranged on the support base 36 by sliding up and down through a sliding groove.

[0074] In this embodiment, a connection column and a positioning hole structure are provided between the support base 36 and the support ring 37. When the support ring 37 and the support base 36 are installed, the connection column is inserted into the positioning hole, and the support ring 37 and the support base 36 are fixedly connected by inserting screws into the connection column and the positioning hole.

[0075] In this embodiment, the lower support member 13 abuts against the support ring 37, and an elastic buckle is provided at the bottom of the lower support member 13. A spherical ball is provided on the elastic buckle and is clamped by the elastic buckle. When the lower support member 13 rotates, the spherical ball rolls on the support ring 37.

[0076] In this embodiment, an installation groove for fixing the motor 16 is provided at the bottom of the support ring 37. The housing of the motor 16 is fixed on the outside of the installation groove through a connecting ear and a screw, and the motor shaft of the motor 16 penetrates through the installation groove and is connected to a gear.

[0077] In this embodiment, the support ring 37 is provided with an avoidance hole corresponding to the boss 24 of the hot air assembly 2. The boss 24 of the hot air assembly 2 passes through the avoidance hole, and a bearing 17 is sleeved on the outer side of the boss 24. The bearing 17 is supported on the support ring 37. An annular rib is provided on the outer peripheral side of the support ring 37 corresponding to the avoidance hole. The edge of the through hole of the lower support member 13 is limited between the bearing 17 and the annular rib, and the through hole of the lower support member 13 is sleeved on the outer peripheral side of the bearing 17.

[0078] A support element is provided between the bottom of the cooking container 1 and the support ring 37. One side of the support element is fixedly connected to the bottom of the cooking container 1, and the other side of the support element forms a point contact support fit with the support ring 37 through balls; the support element rotates synchronously with the cooking container 1, and the support element is in rolling contact with the balls;

[0079] A cover assembly 40 is provided at the top opening of the cooking container 1. The cover assembly 40 covers the top opening of the cooking container 1. The outer ring part of the cover assembly 40 is fixedly connected to the housing 35. A cooling channel 43 is formed between the outermost side of the cooking container 1 and the inner side of the housing 35. A plurality of serrated portions 41 forming a heat dissipation port are provided at the position where the cover assembly 40 corresponds to the cooperation with the housing 35, and the heat dissipation port communicates with the cooling channel 43;

[0080] The bottom of the outer ring part of the cover assembly 40 is supported on the top of the cooking container 1, and a rolling element 42 is provided at the support fit between the two. When the cooking container 1 makes a rotational movement, the cooking container 1 is in rolling contact with the rolling element 42.

[0081] In this embodiment, a limit ring is provided between the outer side of the top of the frying basket 7 and the inner side of the top of the inner cavity 11, and a plurality of air holes communicating with the air outlet duct 4 are provided on the limit ring.

[0082] The cover assembly 40 includes an outer ring cover that positions, supports and covers the air holes of the limit ring, and an inner cover installed on the outer ring cover. A handle is provided on the inner cover, and serrated portions 41 are provided on the outer ring cover.

[0083] In this embodiment, the top opening of the housing 35 is provided with a flanging bent towards the outer ring cover. The flanging is fixed to the outer ring cover by screws, and a compression spring is provided between the outer ring cover and the flanging, which can play a buffering role when the inner cover covers the outer ring cover.

[0084] In this embodiment, a positioning support edge is provided at the top of the inner cavity 11. The bottom of the outer ring cover is supported on the positioning support edge. A rolling element 42 is provided at the bottom of the outer ring cover. The rolling element 42 is a ball, and a clamping position for installing the ball is provided at the bottom of the outer ring cover.

[0085] In this embodiment, the housing 35 has a hollow structure, and the housing 35 is provided with an avoidance position corresponding to the air outlet 32.

[0086] The above is the preferred solution of the present utility model, which shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, various changes and improvements will occur to the present utility model, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An air fryer for uniformly heating food, comprising a cooking container (1) and a hot air component (2), characterized in that: The hot air component (2) is arranged below the cooking container (1); the cooking container (1) is provided with a hot air inlet (3) and an air outlet (4); the hot air component (2) is provided with an air inlet (5) and a hot air outlet (6); The hot air inlet (3) is arranged on the inner bottom wall of the cooking container (1); The air outlet (4), the air inlet (5), the hot air outlet (6) and the hot air inlet (3) are sequentially connected to form a hot air internal circulation channel between the cooking container (1) and the hot air component (2), so as to achieve hot air heating of food in the cooking container (1); The cooking container (1) has an upright placement state and a sideways placement state, and the cooking container (1) is rotatably arranged on the air fryer; The cooking container (1) is in a sideways use placement state, the cooking container (1) performs a rotational motion, the hot air component (2) is started and drives the airflow in the cooking container (1) to circulate through the hot air internal circulation channel and enter between the cooking container (1) and the hot air component (2).

2. The air fryer for uniformly heating food according to claim 1, characterized in that: The cooking container (1) comprises a frying basket (7) for loading food, a protrusion (8) being provided on the bottom wall of the frying basket (7), the protrusion (8) extending upwardly along the bottom wall of the frying basket (7) and being arranged on the bottom wall of the frying basket (7), a vent (9) forming a hot air inlet (3) and communicating with the inner cavity of the frying basket (7) being provided on the protrusion (8), a plurality of vents (9) being provided, and the plurality of vents (9) being arranged in a circular distribution on the outer peripheral surface of the protrusion (8).

3. The air fryer for uniformly heating food according to claim 1, characterized in that: The cooking container (1) comprises a frying basket (7) provided with a paddle (10), wherein the paddle (10) is arranged on the inner wall of the frying basket (7) in a spiral shape, an oblique arc shape or a vertical shape; when the cooking container (1) is in a sideways use placement state and performs a rotational movement, the paddle (10) acts on food in the frying basket (7) to cause the food to be turned over in the frying basket (7).

4. The air fryer for uniformly heating food according to claim 1, characterized in that: The cooking container (1) comprises an inner cavity (11) sleeved on the outer peripheral side of the frying basket (7), and an air outlet duct (4) is formed between the inner side of the inner cavity (11) and the outer side of the frying basket (7); A supporting element is provided below the cooking container (1), and a gear set (15) is provided on the supporting element and is transmission-connected to the motor (16). The motor (16) drives the supporting element and the cooking container (1) to rotate via the gear set (15).

5. The air fryer for uniformly heating food according to claim 4, characterized in that: The hot air assembly (2) is provided with a connecting portion through which the supporting element is inserted, the connecting portion is provided with a bearing (17), the supporting element is provided with an axial hole that cooperates with the bearing (17), and when the supporting element and the cooking container (1) rotate, a rotational fit is formed between the supporting element and the bearing (17).

6. The air fryer for uniformly heating food according to claim 4, characterized in that: The supporting element comprises an upper supporting member (12) and a lower supporting member (13) arranged below the frying basket (7); the bottom of the frying basket (7) is supported on the upper supporting member (12), and the inner side of the inner cavity (11) abuts against the outer side of the upper supporting member (12); A covering structure (14) is provided at the fitting point between the upper supporting member (12) and the lower supporting member (13), and a sealing fit is formed between the upper supporting member (12) and the lower supporting member (13) through the covering structure (14); The gear set (15) comprises a first gear arranged on the lower support member (13), and a second gear meshing with the first gear, the second gear being connected to a motor shaft of a motor (16); The upper support member (12) and the lower support member (13) are both provided with a through hole (18) communicating with the air outlet duct (4); A positioning portion (19) is provided between the upper support member (12) and the frying basket (7), and the frying basket (7) is positioned and supported on the upper support member (12) through the positioning portion (19); when the support element and the cooking container (1) rotate, the upper support member (12) drives the frying basket (7) to rotate synchronously through the positioning portion (19); A ventilation passage (20) communicating with the air inlet (5) of the hot air assembly (2) is formed between the upper support member (12) and the lower support member (13).

7. The air fryer for uniformly heating food according to claim 1, characterized in that: The hot air component (2) comprises a volute (21), the volute (21) being provided with an exhaust port (28) connected to an air outlet duct (4); a supporting member (31) is provided below the hot air component (2), the supporting member (31) being provided with an exhaust port (32) connected to outside air, the exhaust port (28) and the exhaust port (32) being connected to outside air in sequence.

8. The air fryer for uniformly heating food according to claim 7, characterized in that: The hot air assembly (2) further comprises a wind wheel (22) arranged in the volute (21); a volute cover (23) is arranged on the volute (21); a boss (24) is arranged on the volute cover (23) corresponding to the hot air inlet (3) at the bottom of the cooking container (1); a vent (25) is arranged on the outer side of the boss (24) to form a hot air outlet (6); the boss (24) is arranged to extend upward along the top of the volute cover (23); a sink (27) is arranged on the volute (21); and the sink (27) is provided on the volute cover (23). 7) and the inner sides of the boss (24) form a heating chamber for limiting the installation of the heating pipe (26); the volute cover (23) covers the top of the volute (21) so that the wind wheel (22) is enclosed between the volute (21) and the volute cover (23); a volute air duct (29) is formed between the volute (21) and the volute cover (23); an air inlet (5) is arranged on the volute cover (23), and the air inlet (5), the volute air duct (29), the heating chamber and the vent (25) are sequentially connected; The heating pipe (26) is arranged on one side of the air outlet of the wind wheel (22); The supporting member (31) is provided with cooling blades (33), and a driving motor (34) is provided below the supporting member (31). The driving shaft of the driving motor (34) penetrates the supporting member (31) and the volute (21), and the driving shaft of the driving motor (34) is drivingly connected to the cooling blades (33) and the wind wheel (22).

9. The air fryer for uniformly heating food according to claim 1, characterized in that: A temperature sensor (30) is provided on one side of the bottom of the hot air component (2) corresponding to the air inlet (5) where the hot air circulates, so as to detect the temperature at the air inlet (5) of the hot air component (2).

10. The air fryer for uniformly heating food according to claim 1, characterized in that: The cooking container (1) is arranged in the casing (35); a support base (36) and a support ring (37) for supporting the cooking container (1) are provided below the cooking container (1); the support ring (37) is located above the support base (36); the hot air assembly (2) is limitedly installed between the support base (36) and the support ring (37); an oblique support portion (38) and a vertical support portion (39) are provided on the support base (36); A support element is provided between the bottom of the cooking container (1) and the support ring (37); one side of the support element is fixedly connected to the bottom of the cooking container (1), and the other side of the support element forms a point-contact support fit with the support ring (37) via a ball bearing; the support element and the cooking container (1) rotate synchronously, and the support element and the ball bearing are in rolling contact; The vertical support portion (39) is detachably, rotatably or telescopically arranged on the support base (36); the housing (35) is sleeved on the outside of the cooking container (1), the support base (36) and the support ring (37) and covers the position of the oblique support portion (38) of the support base (36); The upright support portion (39) is disassembled, rotated or extended on the support base (36) to open and close the oblique support portion (38) on the support base (36), thereby switching the cooking container (1) between an upright pending placement state and a sideways use placement state; A cover assembly (40) is provided on the top opening of the cooking container (1), the cover assembly (40) covers the top opening of the cooking container (1), an outer ring portion of the cover assembly (40) is fixedly connected to the housing (35), a cooling channel (43) is formed between the outermost side of the cooking container (1) and the inner side of the housing (35), and a plurality of serrations (41) forming heat dissipation ports are provided at the portion where the cover assembly (40) corresponds to the housing (35), the heat dissipation ports being connected to the cooling channel (43); The bottom of the outer ring portion of the cover assembly (40) is supported on the top of the cooking container (1), and a rolling member (42) is provided at the supporting joint between the two. When the cooking container (1) rotates, the cooking container (1) and the rolling member (42) are in rolling contact.

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