Air fryer

Abstract

The utility model relates to the technical field of household appliances, in particular to an air fryer which comprises a shell, a bin containing part is arranged in the shell, at least two upper cooking bins and at least one lower cooking bin are sequentially arranged in the bin containing part from top to bottom, and the upper cooking bins and the lower cooking bins are arranged in the bin containing part from top to bottom. A multi-bin independent design is adopted, different cooking bins are heated respectively by combining the cooking bin bodies with different upper and lower layers and the independent heating devices, it is ensured that the temperature is evenly distributed in respective cavities, diversified cooking requirements are met by reasonably distributing heating areas and an independent control system, the vertical space of the equipment is fully utilized through the multi-layer structure, and the energy-saving and environment-friendly effects are achieved. The non-interfering independent design avoids the problem of taste mixing, is suitable for making food with different tastes or cooking modes, achieves more functions without increasing the size of the equipment, and is particularly suitable for families with limited kitchen space.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, in particular to an air fryer. BACKGROUND

[0002] As a new type of kitchen appliance, the air fryer has rapidly spread since its advent, and is deeply loved by consumers, owing to its "less oil" and "healthy cooking" concepts. The traditional air fryer adopts high-speed hot air circulation technology, and the heated air is uniformly circulated by an internal fan to achieve the effect of rapid heating and cooking. Since the air fryer can significantly reduce the use of oil while retaining the crispy taste of food, it has become an important tool for healthy cooking in many families.

[0003] However, the existing air fryer has limitations in design. Most traditional air fryers are equipped with only one pot body containing a pot, i.e., one cooking chamber. Although this single-pot design is suitable for making one type of dish at a time, it is not sufficient in terms of functionality in today's growing demand for diversified cooking. For example, when a user wants to cook two different types of food (such as chicken wings and French fries) at the same time, they often have to operate in batches. This not only consumes time and effort, but also may result in an undesirable taste and cooking effect of the food. In addition, different foods have different cooking requirements (such as temperature and time), and the single-pot design of the air fryer cannot meet the diversified and simultaneous cooking needs.

[0004] The present utility model is proposed to address the deficiencies of the prior art. SUMMARY

[0005] The above-mentioned existing air fryer is equipped with only one pot body containing a pot, i.e., one cooking chamber, which has the technical problem of insufficient functionality.

[0006] The utility model solves the technical problems by adopting the following technical solutions:

[0007] An air fryer includes a housing, a pot body containing portion is arranged in the housing, an upper layer cooking pot and a lower layer cooking pot are sequentially arranged in the pot body containing portion from top to bottom, the upper layer cooking pot is provided with at least two, the lower layer cooking pot is provided with at least one, and the plurality of upper layer cooking pots are independent of each other; a corresponding first pot body assembly is arranged in each upper layer cooking pot, and a corresponding second pot body assembly is arranged in each lower layer cooking pot; a first heating device corresponding to the upper layer cooking pot and a second heating device corresponding to the lower layer cooking pot are further arranged in the pot body containing portion.

[0008] An air fryer as described above, further comprising a heat insulation structure, the heat insulation structure comprising an air suction channel, a first fan assembly and a first heat dissipation air duct, the air suction channel being wrapped outside the chamber accommodating portion, the first heat dissipation air duct being located above the chamber accommodating portion and being communicated with the air suction channel, the first fan assembly being arranged in the first heat dissipation air duct and being capable of sucking air through the air suction channel, the first heat dissipation air duct being capable of guiding the air flow blown by the first fan assembly to be discharged to the outside, so as to achieve heat dissipation of the air fryer.

[0009] An air fryer as described above, the air suction channel comprising a second heat dissipation air duct and two lateral air ducts arranged on both sides of the second heat dissipation air duct, the second heat dissipation air duct being located between the housing and the first heat dissipation air duct and being communicated with the first heat dissipation air duct, the two lateral air ducts being located on both sides of the chamber accommodating portion and each being communicated with the first heat dissipation air duct, the housing further comprising a first air inlet communicated with the corresponding lateral air duct.

[0010] An air fryer as described above, the first fan assembly comprising a first driving motor and a first fan blade arranged on the output end of the first driving motor, the first heat dissipation air duct further comprising a first air outlet communicated with the outside, the first driving motor being capable of driving the first fan blade to rotate, so as to make the air in the air suction channel flow into the first heat dissipation air duct and be discharged to the outside from the first air outlet.

[0011] An air fryer as described above, the first heat dissipation air duct comprising a volute section, an air outlet section and a volute tongue, the volute tongue being arranged at the connection between the volute section and the air outlet section, the first air outlet being connected to the air outlet end of the air outlet section, the first fan blade being arranged eccentrically in the volute section.

[0012] An air fryer as described above, the first heating device comprising a first heating body arranged in the upper cooking chamber and a second fan blade located above the first heating body, the output end of the first driving motor being capable of passing through the first heat dissipation air duct and being transmissionally connected to the second fan blade in the upper cooking chamber, the first fan blade being located above the second fan blade, the second fan blade being capable of pushing the hot air in the upper cooking chamber to flow under the driving of the first driving motor, so as to achieve heat circulation of the upper cooking chamber.

[0013] An air fryer as described above, the heat insulation structure further comprising a third heat dissipation air duct located between the upper cooking chamber and the lower cooking chamber, the side wall of the chamber accommodating portion being provided with a first through hole, the first through hole being capable of making the third heat dissipation air duct communicated with the air suction channel.

[0014] An air fryer as described above, wherein the heat insulation structure further comprises a fourth heat dissipation air duct arranged between the back surface of the shell and the container accommodating portion, the fourth heat dissipation air duct is arranged corresponding to the upper cooking container, and the fourth heat dissipation air duct is communicated with the air suction channel and the third heat dissipation air duct respectively.

[0015] An air fryer as described above, wherein the second heating device comprises a second driving motor arranged in the third heat dissipation air duct, a third fan blade arranged in the lower cooking container, and a second heating body arranged in the lower cooking container, the third fan blade is arranged above the second heating body, the output end of the second driving motor penetrates into the lower cooking container and is drivingly connected with the third fan blade, and the third fan blade can push the hot air in the lower cooking container to flow under the drive of the second driving motor, so as to realize the heat circulation of the lower cooking container.

[0016] An air fryer as described above, wherein the top of the lower cooking container is provided with an upwardly protruding assembly groove, the third fan blade is arranged in the assembly groove, the second driving motor is arranged outside the top of the assembly groove, the output end of the second driving motor penetrates into the assembly groove and is drivingly connected with the third fan blade, the outside of the assembly groove is provided with a second air outlet portion communicated with the outside, and when the second driving motor drives the second fan blade to rotate, the hot air in the lower cooking container can be discharged to the outside through the second air outlet portion.

[0017] The air fryer has the advantages that:

[0018] The air fryer of the embodiment relates to the technical field of household appliances, and comprises a shell, wherein the shell is provided with a container accommodating portion, the container accommodating portion is sequentially provided with an upper cooking container and a lower cooking container from top to bottom, the upper cooking container is provided with at least two, the lower cooking container is provided with at least one, the multiple containers are independently designed, the upper and lower cooking containers and the independent heating devices are combined, different cooking containers are heated respectively, the temperature is uniformly distributed in the respective cavities, the heating area is reasonably distributed, and the independent control system is controlled, so that the diversified cooking requirements are met, the vertical space of the equipment is fully utilized, the independent design without interference avoids the problem of taste mixing, different tastes or cooking methods of food are suitable, more functions can be realized without increasing the equipment volume, and the air fryer is particularly suitable for families with limited kitchen space.

[0019] The air fryer will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is one of the structural schematic diagrams of the air fryer;

[0021] Figure 2 Fig. 2 is another of the structural schematic diagrams of the air fryer.

[0022] Figure 3 It is one of structure schematic views of the hidden pot body assembly of the utility model;

[0023] Figure 4 It is second structure schematic view of the hidden pot body assembly of the utility model;

[0024] Figure 5 It is one of exploded schematic views of the utility model;

[0025] Figure 6 It is second exploded schematic view of the utility model;

[0026] Figure 7 It is the bottom view schematic view of the first heat dissipation air duct hidden bottom shell of the utility model;

[0027] Figure 8 It is the top view schematic view of the utility model;

[0028] Figure 9 It is Figure 8 It is the section view schematic view along A-A line and the local enlarged schematic view;

[0029] Figure 10 It is Figure 8 It is the section view schematic view along B-B line;

[0030] Figure 11 It is Figure 8 It is the section view schematic view along C-C line. DETAILED DESCRIPTION

[0031] The embodiment of the utility model will be explained in detail below in combination with the drawings.

[0032] As Figures 1 to 11 Indicated, the air fryer of one embodiment, including the shell 1, the warehouse body containing portion 2 is arranged in the shell 1, the upper layer cooking warehouse 3 and the lower layer cooking warehouse 4 are sequentially arranged from top to bottom in the warehouse body containing portion 2, the upper layer cooking warehouse 3 is provided with at least two, the lower layer cooking warehouse 4 is provided with at least one, multiple the upper layer cooking warehouse 3 is independent of each other;Each the upper layer cooking warehouse 3 is provided with corresponding first pot body assembly 31, each the lower layer cooking warehouse 4 is provided with corresponding second pot body assembly 41;The warehouse body containing portion 2 still is provided with the first heating device 32 corresponding with the upper layer cooking warehouse 3 and the second heating device 42 corresponding with the lower layer cooking warehouse 4.

[0033] Specifically, the air fryer of the embodiment adopts multiple warehouse independent design, combines the cooking warehouse body of different levels and independent heating device, meets the diversified cooking demand through the reasonable distribution heating area and independent control system.

[0034] Preferably, the upper cooking chamber 3 and the lower cooking chamber 4 are independently designed, each with an independent pot assembly and corresponding heating device inside the cooking chamber body, the first heating device 32 and the second heating device 42 are responsible for heating different cooking chambers respectively, ensuring uniform temperature distribution in the respective chambers, thereby avoiding overheating or uneven heating of food.

[0035] Moreover, the heating function of each cooking chamber is controlled by a separate control module, and the user can set the cooking mode, temperature and time of different chamber bodies through the intelligent panel, and the temperature and time of each cooking chamber can be independently set to meet the cooking needs of different foods (such as high-temperature fried French fries and low-temperature roasted vegetables can be done at the same time). Through independent heating devices and modular pot assemblies, the device can support frying, baking, stewing, boiling and other cooking methods, with stronger compatibility and more comprehensive functions. Users can choose different cooking modes according to their needs to meet daily household cooking, holiday gatherings or special dietary requirements.

[0036] Preferably, during the cooking process, the working status of each chamber (such as remaining time, temperature) is displayed in real time, which is convenient for the user to control.

[0037] Further, the multi-chamber design allows users to cook multiple different foods at the same time, for example, the two upper cooking chambers can fry French fries and chicken wings respectively, while the lower cooking chamber can roast a whole chicken or other large-volume food. This design avoids the hassle of traditional air fryers that require batch cooking, significantly improving cooking efficiency, especially suitable for busy families and catering scenarios.

[0038] The multi-layer structure makes full use of the vertical space of the device, with multiple small cooking chambers on the upper layer suitable for making small quantities or diversified dishes, and larger cooking chambers on the lower layer suitable for handling large-volume food materials. The independent design of the two layers avoids the problem of flavor mixing and is suitable for making food with different flavors or cooking methods. Users can achieve more functions without increasing the size of the device, which is particularly suitable for families with limited kitchen space.

[0039] Preferably, the independent heating multi-chamber design effectively saves energy by heating only the actual use of the chamber part, avoiding unnecessary energy waste.

[0040] Preferably, the pot assembly of each cooking chamber can be individually removed for easy cleaning, avoiding the problem of difficult cleaning after mixing multiple foods in traditional single-chamber designs. Users can flexibly choose or replace different pot assemblies to adapt to different cooking tasks.

[0041] For example, Figures 1 to 11As shown, the air fryer of the embodiment further comprises a heat insulation structure, which comprises an air suction channel 5, a first fan assembly 6 and a first heat dissipation air duct 7. The air suction channel 5 is wrapped on the outer side of the bin accommodating part 2. The first heat dissipation air duct 7 is located above the bin accommodating part 2 and communicates with the air suction channel 5. The first fan assembly 6 is arranged in the first heat dissipation air duct 7 and can suck air through the air suction channel 5. The first heat dissipation air duct 7 can guide the airflow blown by the first fan assembly 6 to be discharged to the outside, so as to achieve heat dissipation of the air fryer.

[0042] Specifically, when the multi-bin air fryer is running, the first fan assembly 6 starts to work, sucks air through the air suction channel 5, and brings the hot air in the shell 1 into the first heat dissipation air duct 7. The airflow blown by the first fan assembly 6 can be discharged to the outside through the first heat dissipation air duct 7, thereby taking away the heat inside the shell 1. The air is continuously extracted and discharged, which ensures that the heat can be effectively dissipated, prevents the outer surface temperature of the shell 1 from being too high, and effectively reduces the temperature of the outer surface of the shell 1. The temperature of the outer surface of the shell 1 is greatly reduced, which significantly reduces the risk of burns. Especially in a home environment, children and the elderly and other vulnerable groups can use the multi-bin air fryer more safely.

[0043] Moreover, it can also prevent internal components from being damaged due to overheating inside the shell 1.

[0044] Preferably, since the air suction channel 5 is located between the shell 1 and the bin accommodating part 2, it forms a heat insulation layer and uses flowing air to drive the hot air overflowing from the bin accommodating part 2 to be discharged through the cooperation of the first fan assembly 6 and the first heat dissipation air duct 7. This not only prevents the hot air generated in the bin accommodating part 2 from being directly transmitted to the external shell, avoids the high temperature of the outer surface of the air fryer, but also ensures that the temperature of the surface of the equipment is relatively low, thereby improving the safety of the user.

[0045] Through the air flow effect of the air suction channel 5, the hot air overflowing from the bin accommodating part 2 is quickly taken to the first fan assembly 6 and then discharged to the outside through the first heat dissipation air duct 7. This multi-level heat dissipation path ensures that the heat can be efficiently discharged, avoiding heat accumulation and overheating. The high-efficiency airflow generated by the first fan assembly 6 helps to take away the hot air from the bin accommodating part 2 and quickly discharge it through the air duct system, thereby improving the working efficiency of the entire heat dissipation system.

[0046] The double effect of the heat insulation layer and the flowing air effectively controls the temperature of the air fryer shell, prevents the temperature from being too high to affect safety, especially in a home environment, avoids the risk of burns that may be caused by the high temperature of the surface of the equipment, and ensures the safety of the user.

[0047] The air suction channel takes away the hot air in the chamber accommodating portion 2 by flowing air, accelerates heat dissipation by air flow, optimizes heat management, and through this design, hot air does not stay in the device, but flows smoothly to the outside through the air duct system, effectively improving the heat dissipation performance of the air fryer, not only reducing the accumulation of heat inside, but also ensuring that the working temperature of each component of the air fryer is within a safe range, avoiding damage to internal components due to overheating.

[0048] As shown in Figures 1 to 11 The air suction channel 5 of the embodiment includes a second heat dissipation air duct 51 and two lateral air ducts 52 arranged on both sides thereof, the second heat dissipation air duct 51 is located between the housing 1 and the first heat dissipation air duct 7, and the second heat dissipation air duct 51 is communicated with the first heat dissipation air duct 7; the two lateral air ducts 52 are located on both sides of the chamber accommodating portion 2, and each lateral air duct 52 is communicated with the first heat dissipation air duct 7, and the housing 1 is further provided with a first air inlet communicated with the corresponding lateral air duct 52.

[0049] Specifically, the airflow generated by the fan assembly 6 first drives the external cold air, guides the external cold air into the lateral air duct 52 through the first air inlet, and drives the hot air in the lateral air duct 52 to flow to the second heat dissipation air duct 51 by the airflow of the fan assembly, the hot air is guided to the second heat dissipation air duct 51 through the lateral air duct 52, and then is sucked into the first heat dissipation air duct 7 by the fan assembly 6 and is discharged, completing heat dissipation.

[0050] Specifically, through the design of the lateral air duct and the second heat dissipation air duct, the hot air in the air fryer can flow rapidly and effectively through multiple air ducts (including the lateral air duct, the second heat dissipation air duct and the first heat dissipation air duct), and the hot air in the air fryer can be effectively guided and discharged through multiple paths. This multi-stage heat dissipation path ensures that the internal heat of the air fryer is more efficiently released, thereby reducing the possibility of heat accumulation and significantly improving the heat dissipation efficiency. This design accelerates the flow of hot air and ensures that the shell does not overheat. The multi-stage design of the air duct can form a more effective air flow channel, optimize heat discharge, and further improve the heat dissipation effect.

[0051] Through the air suction effect of the first fan assembly 6 and the multi-channel design, the heat is quickly discharged to the outside, avoiding the temperature of the air fryer shell being too high, thereby reducing the risk of burns, especially when used at home, the safety of children and the elderly when using the air fryer is greatly improved.

[0052] By adding a lateral air duct, air flow is more flexible, and hot air can be more efficiently guided from the side of the shell 1 and the cartridge body accommodating portion 2 to the central heat dissipation path. Such a design can make the air flow more uniform and efficient. The design of the first air inlet ensures that external air can smoothly enter the lateral air duct. In combination with the air suction effect of the fan assembly, air circulation is enhanced, and heat dissipation is further accelerated.

[0053] Moreover, the first heat dissipation air duct 7 is located between the cartridge body accommodating portion 2 and the second heat dissipation air duct 51, i.e., the first heat dissipation air duct 7 is located at the top of the cartridge body accommodating portion 2 and at a position higher than the shell 1. By utilizing the natural tendency of hot air to rise, the hot air can be quickly discharged upward of the shell 1 when discharged, avoiding the hot air from re-entering the air suction channel 5 through the first air inlet to perform a heat circulation action, ensuring that the air suction channel 5 sucks in cold air for heat dissipation, and ensuring the heat dissipation effect of the air fryer.

[0054] As shown in Figures 1 to 11 The first fan assembly 6 of the present embodiment includes a first driving motor 61 and a first fan blade 62 provided on the output end thereof. The first heat dissipation air duct 7 is further provided with a first air outlet portion 71 in communication with the outside. The first driving motor 61 can drive the first fan blade 62 to rotate, so as to cause the air in the air suction channel 5 to flow into the first heat dissipation air duct 7 and be discharged from the first air outlet portion 71 to the outside.

[0055] The first driving motor 61 is located in the air suction channel 5, and the first fan blade 62 is located in the first heat dissipation air duct 7. The output end of the first driving motor 61 penetrates into the first heat dissipation air duct 7 and is in transmission connection with the first fan blade 62.

[0056] When the air fryer starts to work, the first driving motor 61 is started to drive the first fan blade 62 to rotate. With the rotation of the first fan blade, the hot air in the air suction channel 5 is sucked in and guided into the first heat dissipation air duct 7. The air flow in the first heat dissipation air duct 7 is pushed and finally discharged to the outside of the air fryer through the first air outlet portion 71. In this process, the rotation of the first fan blade helps to accelerate the flow of air and enhance the heat dissipation effect inside the air fryer. The entire heat dissipation system relies on the operation of the fan assembly to ensure that the hot air inside the air fryer is quickly discharged, preventing excessive accumulation of heat. This design ensures that heat does not remain inside the air fryer, reducing the temperature of the outer shell and optimizing the heat discharge path.

[0057] Specifically, the first driving motor 61 and the first fan blade 62 are designed to be in transmission connection by penetrating into the heat dissipation air duct through the output end, so that the structure is more compact, the complexity is simplified, and the stability and reliability of the fan assembly are improved. The installation position of the fan assembly is designed reasonably, which can ensure good heat dissipation effect without occupying too much space, and ensure the compact design of the air fryer.

[0058] Preferably, the first heat dissipation duct 7 is provided with a first clearance hole to avoid the output end of the first drive motor 61. The output end of the first drive motor 61 passes through the first clearance hole, extends into the first heat dissipation duct 7, and is connected to the first fan blade 62, which has the advantage of simple structure.

[0059] Preferably, the housing 1 is provided with a second clearance hole corresponding to the first air outlet 71. The first air outlet 71 extends out of the housing 1 through the second clearance hole, so that hot air can be smoothly discharged from the air fryer and avoid interference between the discharged hot air and other parts of the housing 1.

[0060] Preferably, the first air outlet 71 includes a first air outlet shell and a first air outlet disposed on the first air outlet shell. The first air outlet is located on the outside of the shell 1, and the hot air in the first heat dissipation duct 7 is discharged to the outside through the first air outlet of the first air outlet shell.

[0061] Preferably, the first air outlet is located at the top of the first air outlet shell and faces upward. The presence of the first air outlet 71 can change the airflow direction in the first heat dissipation duct 7, causing the hot air to be discharged upward of the shell 1 and quickly dispersed outward. By changing the airflow direction of the hot air, it can help prevent the hot air from being drawn back into the air intake duct 5, which helps the air fryer dissipate heat. Furthermore, by discharging the hot air upward, it can quickly disperse outward by taking advantage of the natural tendency of the hot air to rise, thereby reducing the backflow and accumulation of hot air inside and / or outside the shell 1.

[0062] In other embodiments, the first air outlet is located on one side of the first air outlet housing, and a suitable design can be selected according to actual needs.

[0063] like Figures 1 to 11 As shown, the first heat dissipation duct 7 in this embodiment is provided with a first ventilation hole 75. The first heat dissipation duct 7 is connected to the air intake channel 5 through the first ventilation hole 75. Preferably, the first ventilation hole 75 is located above the first fan blade 62, which can ensure efficient guidance of airflow and enable hot air to obtain a smoother exhaust path when passing through the duct.

[0064] like Figures 1 to 11 As shown, the first heat dissipation duct 7 in this embodiment includes a volute section 72, an air outlet section 73, and a volute tongue 74. The volute tongue 74 is located at the connection between the volute section 72 and the air outlet section 73. The first air outlet 71 is connected to the air outlet end of the air outlet section 73. The first fan blade 62 is eccentrically disposed inside the volute section 72.

[0065] By setting the center of the first fan blade 62 and the center of the volute section 72 eccentrically, the relative position of the first fan blade 62 and the volute section 72 is changed, and the outflow angle of the first fan blade 62 is changed correspondingly, the flow field of the volute tongue 74 is changed, the high pressure area of the volute tongue 74 is reduced, so that the impact of the airflow on the volute tongue 74 is reduced, the airflow loss in the first heat dissipation air duct 7 is reduced, and the air volume is increased.

[0066] And in the process of rotation of the first fan blade 62, more airflow is thrown out of the first fan blade 62 in the volute section 72 and directly enters the air outlet section 73, so that the airflow impacting the volute tongue 74 is reduced, the high pressure area of the volute tongue 74 is reduced, and the smoothness of the airflow in the air duct is improved, and the air volume is increased.

[0067] The eccentric setting makes the airflow flow more smoothly in the air duct, without too much backflow or turbulence, increases the smoothness of the airflow in the air duct, which makes the equipment more efficient when working, and avoids the energy loss caused by uneven airflow.

[0068] Preferably, the first driving motor 61 of the embodiment is located outside the volute section 72, and the first driving motor 61 is located in the air suction channel 5. Preferably, the first driving motor 61 of the embodiment is located in the second heat dissipation air duct 51. With such a design, the first driving motor 61 has sufficient heat dissipation space, and the airflow flow can also help the first driving motor 61 dissipate heat, and is beneficial to optimize the internal space of the first heat dissipation air duct 7, so that the structure is more compact, and the interference of the motor to the airflow path is reduced, ensuring the smoothness of the airflow in the first heat dissipation air duct 7, and ensuring normal heat dissipation.

[0069] Preferably, the air outlet section 73 of the embodiment includes a first air outlet area 731 and a second air outlet area 732, the first air outlet area 731 is located between the volute section 72 and the second air outlet area 732, and the inner diameter of the first air outlet area 731 gradually expands along the volute section 72 to the second air outlet area 732.

[0070] The purpose of this design is to provide a smooth airflow transition between the volute section 72 and the second air outlet area 732. With the gradual expansion of the inner diameter, the speed of the airflow gradually slows down, and the pressure gradually releases, thereby reducing the turbulence and noise of the airflow and optimizing the stability of the airflow flow.

[0071] Specifically, the airflow in the volute section 72 can be high speed and high pressure, and suddenly entering a larger air outlet area will cause airflow instability and pressure loss. Through the gradually expanding inner diameter design, the airflow can smoothly expand to the second air outlet area 732, avoiding the impact of pressure change, thereby improving the overall efficiency of the air duct.

[0072] Preferably, in this embodiment, the second air outlet area 732 is located between the first air outlet area 731 and the first air outlet portion 71, and the inner diameter of the second air outlet area 732 gradually decreases along the direction from the first air outlet area 731 to the first air outlet portion 71.

[0073] In duct design, air compression often leads to an increase in air velocity. By gradually reducing the inner diameter of the second air outlet 732, the air velocity is accelerated, which helps the airflow smoothly enter the first air outlet 71 and ensures that the airflow distribution in the duct is uniform, avoiding uneven heat dissipation caused by excessive or insufficient air volume.

[0074] Preferably, in the design where the inner diameter of the first air outlet zone 731 gradually increases, the airflow experiences reduced resistance as it passes through this section, allowing for smoother airflow. The airflow is no longer affected by rapidly expanding resistance, minimizing energy loss and helping to reduce turbulence in the transition section, thus avoiding abrupt flow instability or pressure drop. Reduced turbulence means a more stable airflow within the duct, maintaining high airflow output while minimizing energy loss.

[0075] The inner diameter of the preferred second air outlet 732 gradually decreases, which can accelerate the airflow as it flows towards the first air outlet 71. This acceleration effect helps to ensure the uniform discharge of airflow in the duct, avoids local airflow that is too slow or stagnant, ensures that the air can smoothly carry away heat, and improves the heat dissipation effect. In addition, the design of the gradually decreasing inner diameter also helps to provide a balanced airflow output between the first air outlet 71 and the external environment. When the airflow enters the first air outlet, the speed is appropriate and the airflow is uniform, which is crucial for the thermal management and heat dissipation effect of the equipment.

[0076] Furthermore, the gradually expanding inner diameter can reduce airflow fluctuations, making the airflow more stable when passing through the first air outlet 731, thereby avoiding heat accumulation caused by airflow impact. At the same time, the inner diameter of the second air outlet 732 gradually decreases, allowing the airflow to enter the first air outlet 71 at a more suitable speed, thereby improving the heat dissipation efficiency.

[0077] like Figures 1 to 11 As shown, the first heating device 32 in this embodiment includes a first heating element 321 disposed in the upper cooking chamber 3 and a second fan blade 322 located above the first heating element. The output end of the first drive motor 61 can pass through the first heat dissipation duct 7 and enter the upper cooking chamber 3 to be connected to the second fan blade 322. The first fan blade 62 is located above the second fan blade 322. Under the drive of the first drive motor 61, the second fan blade 322 can push the hot air in the upper cooking chamber 3 to flow, so as to realize the heat circulation of the upper cooking chamber 3.

[0078] Specifically, the first driving motor 61 realizes different functions by driving the first fan blade 62 and the second fan blade 322 at the same time. The first fan blade 62 functions to suck external air through the air suction passage 5 and push the air to pass through the first heat dissipation air duct 7 for heat dissipation. At the same time, the second fan blade 322 rotates to push the hot air in the upper cooking chamber 3 to flow, thereby forming a hot air circulation to ensure uniform temperature distribution in the upper cooking chamber 3.

[0079] When the first heating body 321 starts heating, the second fan blade 322 uniformly distributes heat in the upper cooking chamber 3 through air flow, thereby realizing hot air circulation, while the first fan blade 62 sucks air through the air suction passage 5 and dissipates heat through the first heat dissipation air duct 7.

[0080] Specifically, by coordinating the heating and heat dissipation functions through the same driving motor, the interference of independent heat dissipation driving motors and heating driving motors is avoided, so that the device structure is more compact and simple, and the operation is more efficient.

[0081] This design reduces the need for additional motors and fans, reduces the energy consumption of the device, and improves the overall working efficiency of the device.

[0082] Further, the second fan blade 322 pushes the air flow in the upper cooking chamber 3 to form a hot air circulation to ensure uniform temperature distribution in the upper cooking chamber, while the first fan blade 62 maintains the temperature stability of the motor and the air fryer by effectively dissipating heat, avoiding temperature fluctuations caused by overheating. This design works synergistically to help maintain the accuracy of the internal temperature control of the system, making the cooking process more stable and achieving the desired heating effect, and can avoid the temperature of the outer wall of the shell of the air fryer being too high.

[0083] Further, the first driving motor 61 simultaneously drives two fan blades, avoiding the need for additional driving motors and fans, thereby reducing overall power consumption and achieving energy-saving purposes. At the same time, due to the reduction in the number of additional fans, the noise during device operation is also reduced, improving the user experience. Efficient heat dissipation and heating work synergistically to enable the system to complete the tasks of heat dissipation and heating in a shorter time, thereby improving the overall energy efficiency.

[0084] As shown in Figures 1 to 11 The heat insulation structure of the present embodiment further comprises a third heat dissipation air duct 8 located between the upper cooking chamber 3 and the lower cooking chamber 4. The side wall of the chamber body accommodating portion 2 is provided with a first through hole 21, which can communicate the third heat dissipation air duct 8 with the air suction passage 5.

[0085] Preferably, the first fan assembly 6 sucks external air through the air suction passage 5, drives the air flow, and guides the sucked air to the first heat dissipation air duct 7 for heat dissipation.

[0086] Meanwhile, since the first through hole 21 is designed, when the first fan assembly 6 works, it not only drives the air in the air suction channel 5 to flow into the first heat dissipation air duct 7, but also introduces the air in the third heat dissipation air duct 8 into the air suction channel 5 through the first through hole 21. So that the hot air in the third heat dissipation air duct 8 is also sucked into the air suction channel 5, further taking away the heat between the two cooking chambers, playing an effective role in heat dissipation between the two chamber bodies.

[0087] Further, the upper cooking chamber 3 and the lower cooking chamber 4 will generate different temperatures during use, especially in the case of heavy workload, the heat between the two chamber bodies is more concentrated, the design of the third heat dissipation air duct 8 enables these heat to be effectively taken away by air flow, avoiding excessive heat accumulation, further improving the heat dissipation efficiency.

[0088] By connecting the third heat dissipation air duct 8 with the air suction channel 5, air can flow through the area between the upper cooking chamber 3 and the lower cooking chamber 4, taking away excess heat and reducing the temperature difference between the chamber bodies. This not only ensures the balanced distribution of internal temperature of the equipment, but also improves the heat dissipation efficiency and avoids local overheating.

[0089] Preferably, the third heat dissipation air duct 8 can provide heat dissipation space between the upper cooking chamber 3 and the lower cooking chamber 4, and there is a certain distance between the upper cooking chamber 3 and the lower cooking chamber 4, to ensure that the heat between them does not excessively affect each other.

[0090] As shown in Figures 1 to 11 The heat insulation structure of the embodiment further comprises a fourth heat dissipation air duct 9 arranged between the back of the shell 1 and the chamber body accommodating part 2. The fourth heat dissipation air duct 9 is arranged corresponding to the upper cooking chamber 3. The fourth heat dissipation air duct 9 is connected with the air suction channel 5 and the third heat dissipation air duct 8 respectively.

[0091] In this embodiment, the two sides of the fourth heat dissipation air duct 9 are connected with the air suction channel 5 respectively, and the bottom of the fourth heat dissipation air duct 9 is connected with the top of the third heat dissipation air duct 8.

[0092] Preferably, the two sides of the fourth heat dissipation air duct 9 are connected with the air suction channel 5, so that the air in the air suction channel 5 can not only flow into the first heat dissipation air duct 7 for heat dissipation, but also the air in the fourth heat dissipation air duct 9 can flow into the first heat dissipation air duct 7 through the air suction channel 5 for heat dissipation, further taking away the heat at the back of the equipment.

[0093] Meanwhile, the bottom of the fourth heat dissipation air duct 9 is communicated with the top of the third heat dissipation air duct 8, forming a multi-channel heat dissipation system. When the first fan assembly 6 works, it drives the air flow, not only sucking air into the first heat dissipation air duct 7, but also guiding the hot air in the fourth heat dissipation air duct 9 and the third heat dissipation air duct 8 into the air suction channel 5, and finally discharging the hot air through the first heat dissipation air duct 7, achieving the effect of overall heat dissipation.

[0094] Specifically, the first fan assembly 6 sucks external air through the air suction channel 5 and drives the air flow to the multiple heat dissipation air ducts, including the first heat dissipation air duct 7, the third heat dissipation air duct 8, and the fourth heat dissipation air duct 9.

[0095] During the whole process, the air flow in the fourth heat dissipation air duct 9 helps to take away the heat between the back of the shell 1 and the container accommodating part 2, and the air flow in the third heat dissipation air duct 8 further takes away the heat between the upper cooking container 3 and the lower cooking container 4. Moreover, the air flow in the fourth heat dissipation air duct 9 and the third heat dissipation air duct 8 drives the heat into the air suction channel 5, and then discharges it through the first heat dissipation air duct 7.

[0096] Preferably, the fourth heat dissipation air duct 9 is located between the back of the shell 1 and the container accommodating part 2, which provides additional heat dissipation space for the back of the device, helping to effectively disperse the heat of the air fryer back.

[0097] Specifically, the communication between the fourth heat dissipation air duct 9 and the third heat dissipation air duct 8 enables the heat to flow through multiple channels at the same time, increasing the area and number of channels, effectively improving the heat dissipation efficiency, especially the design of the fourth heat dissipation air duct 9 enables the heat of the back of the device to be effectively dissipated, avoiding the phenomenon of heat accumulation.

[0098] When the first fan assembly 6 drives the air flow, it can realize the synergistic effect of air flow in multiple heat dissipation areas, and improve the overall heat dissipation capacity, which not only ensures that the device will not overheat during high-load operation, but also ensures the stable operation of the device for a long time.

[0099] The heat dissipation space at the back of the device is provided by the fourth heat dissipation air duct 9, which can take away the hot air from the back of the device through the communication with the air suction channel 5, which can effectively avoid the local overheating caused by excessive heat accumulation in a certain part of the device.

[0100] The design of the third heat dissipation air duct 8 and the fourth heat dissipation air duct 9 effectively avoids the uneven heat between the upper cooking container 3 and the lower cooking container 4, ensuring the uniformity of temperature distribution, and thus improving the cooking effect of food.

[0101] Further, through the multi-level heat dissipation design, the fourth heat dissipation air duct 9 can prevent the equipment from being damaged due to overheating of the motor and internal electrical components, thereby prolonging the service life of the equipment. The cooperative work of the first fan assembly 6 can ensure that the equipment maintains an appropriate working temperature during the entire working process, thereby avoiding the risk of equipment failure due to poor heat dissipation in a high-temperature environment.

[0102] The optimization of the heat dissipation system not only improves the safety of the equipment, but also reduces maintenance and failures caused by overheating, thereby reducing the maintenance cost of the equipment.

[0103] The design of the fourth heat dissipation air duct 9 makes effective use of the space between the housing 1 and the bin body accommodating portion 2, avoiding additional space waste. Through this reasonable space planning, the internal structure of the equipment is compact and optimized, and at the same time, the heat dissipation space at the back is increased, which helps to improve the overall heat dissipation efficiency.

[0104] As shown in Figures 1 to 11 , the second heating device 42 of the present embodiment includes a second driving motor 421 located in the third heat dissipation air duct 8, a third fan blade 422 located in the lower layer cooking bin 4, and a second heating body 423 located in the lower layer cooking bin 4. The third fan blade 422 is located above the second heating body 423. The output end of the second driving motor 421 penetrates into the lower layer cooking bin 4 and is in transmission connection with the third fan blade 422. The third fan blade 422 can push the hot air in the lower layer cooking bin 4 to flow under the drive of the second driving motor 421, so as to realize the heat circulation of the lower layer cooking bin 4.

[0105] Since the third fan blade 422 continuously pushes the air in the lower layer cooking bin 4 to flow, the air and heat in the lower layer cooking bin 4 form an effective circulation flow path, which not only accelerates the transfer of heat and ensures uniform heating of food, but also improves the heat efficiency, so that each area in the lower layer cooking bin is fully heated.

[0106] As shown in Figures 1 to 11 , the top of the lower layer cooking bin 4 of the present embodiment is provided with an upwardly protruding assembly groove 43. The third fan blade 422 is located in the assembly groove 43. The second driving motor 421 is arranged outside the top of the assembly groove 43. The output end of the second driving motor 421 penetrates into the assembly groove 43 and is in transmission connection with the third fan blade 422. The outside of the assembly groove 43 is provided with a second air outlet portion 431 which is in communication with the outside. When the second driving motor 421 drives the second fan blade 322 to rotate, the hot air in the lower layer cooking bin 4 can be discharged to the outside through the second air outlet portion 431.

[0107] Specifically, the second driving motor 421 drives the third fan blade 422 to rotate when in operation, and the rotating third fan blade 422 pushes the hot air in the lower cooking chamber 4 to form an effective air circulation system. The hot air circulates through the air flow path in the assembly groove 43 and is delivered to each area of the lower cooking chamber, and is finally discharged to the outside through the second air outlet part 431 outside the assembly groove 43. The design of the second air outlet part 431 ensures that the hot air in the lower cooking chamber 4 can be effectively discharged, avoiding the accumulation of heat in the lower cooking chamber 4.

[0108] Specifically, the second air outlet part 431 is in communication with the outside, ensuring that the excess hot air pushed by the third fan blade 422 can be quickly discharged from the lower cooking chamber 4, reducing the phenomenon of excessive local temperature in the lower cooking chamber 4, and maintaining the stability of the internal temperature of the air fryer.

[0109] Furthermore, the hot air is discharged to the outside through the second air outlet part 431, which helps to reduce the internal temperature of the equipment and improve the overall heat dissipation effect.

[0110] Further, the arrangement of the second air outlet part 431 enables the excess hot air in the lower cooking chamber 4 to be quickly discharged, avoiding heat accumulation, thereby further improving the heat dissipation efficiency of the air fryer.

[0111] Further, the rotation of the third fan blade 422 promotes the uniform distribution of hot air in the lower cooking chamber 4 through forced air flow. Air circulation not only makes the heat released by the second heating body 423 more efficiently spread to the surface of each food, but also ensures that the temperature in each area remains consistent, and also avoids the problem of excessive or insufficient temperature in some parts of the lower cooking chamber 4, thereby making the cooking process more uniform and improving the cooking effect of the food.

[0112] Moreover, in the present embodiment, the cooperation of the second air outlet part 431 and the third heat dissipation air duct 8 helps to prevent the temperature at the top of the lower cooking chamber 4 from being too high, ensuring the normal operation of the second driving motor 421.

[0113] Preferably, the second heating body 423 is located in the assembly groove 43 and below the third fan blade 422. Such a design facilitates a more compact structure of the lower cooking chamber 4 and facilitates the miniaturization of the air fryer.

[0114] Preferably, the number of upper cooking chambers 3 in the present embodiment is at least two, and they are independent of each other. The first fan assembly 6 and the first heat dissipation air duct 7 are arranged one-to-one, and the first heat dissipation air duct 7 is arranged one-to-one with the upper cooking chamber 3. The number of lower cooking chambers 4 is at least one.

[0115] In the embodiment, the number of upper cooking chambers 3 is at least two, and they are independent of each other, which means that the user can cook different foods at the same time according to needs, and each cooking chamber can set different temperatures and times according to specific requirements.

[0116] The temperature, wind power, and cooking time of each upper cooking chamber 3 can be controlled independently, which provides greater flexibility for cooking.

[0117] Specifically, the first fan assembly 6 is responsible for generating air flow and cooling the corresponding upper cooking chamber 3 through the first cooling air duct 7. In this embodiment, each upper cooking chamber 3 has a corresponding first driving motor 61, first fan blade 62, second fan blade 322, and first heating body 321, that is, the heating and cooling of each upper cooking chamber 3 are independent of each other, ensuring that the hot air flow can be adjusted according to the requirements of each cooking chamber.

[0118] The number of lower cooking chambers 4 is at least one, and the operation of the lower cooking chamber 4 is independent of the upper cooking chamber. The lower cooking chamber 4 transmits heat and circulates air through independent heating devices and air ducts, ensuring that its cooking effect and heating efficiency will not be affected by the upper cooking chamber 3, and different cooking operations can be performed in the lower cooking chamber 4.

[0119] Preferably, the number of upper cooking chambers 3 is greater than the number of lower cooking chambers 4. In this embodiment, the number of upper cooking chambers 3 is two, and the number of lower cooking chambers 4 is one. The volume of each upper cooking chamber 3 is smaller than the volume of the lower cooking chamber 4, that is, the volume of the first pot body assembly 31 is greater than the volume of the second pot body assembly 41. Multiple small-volume first pot body assemblies 31 can handle small-volume food, while a single large-volume second pot body assembly 41 can handle large-volume food.

[0120] Preferably, the large-volume second pot body assembly 41 of the embodiment can lower the center of gravity of the air fryer to avoid the air fryer from being turned over.

[0121] Taking the example of the number of upper cooking chambers 3 being two and the number of lower cooking chambers 4 being one, in this embodiment, both of the upper cooking chambers 3 have corresponding first fan assemblies 6 and first cooling air ducts 7. Both first fan assemblies 6 are located in the air suction channel 5 and can suck hot air in the air suction channel 5 to perform a cooling action through the first cooling air duct 7.

[0122] Preferably, the number of upper cooking chambers 3 is designed in relation to the number of lower cooking chambers 4, so that when the air fryer is working in multi-chamber mode, the hot air in the air suction channel 5 can be accelerated by the simultaneous operation of multiple first fan assemblies 6, and then the heat is guided into multiple first heat dissipation air ducts 7 for discharge, which can effectively improve the heat dissipation efficiency of the entire device, especially when multiple cooking chambers are working simultaneously, the heat is discharged more quickly.

[0123] When the device is working in multi-chamber mode, the cooperative work of the two fan assemblies 6 can quickly suck the heat in the shell, and quickly discharge it through the heat dissipation air duct, which can significantly reduce the problem of overheating of the device caused by heat accumulation during cooking.

[0124] Since each fan assembly is associated with a specific upper cooking chamber 3, the flow path of hot air is clear and accurate, effectively utilizing the natural tendency of hot air to rise, ensuring that the fan assembly 6 can quickly suck hot air for heat dissipation, and ensuring that the temperature of the outer surface of the shell 1 will not be overheated.

[0125] In addition, in the present embodiment, the third fan blade 422 driven by the second driving motor 421 discharges the hot air in the lower cooking chamber 4 through the second air outlet 431, and does not extract the air in the third heat dissipation air duct 8. With such a design, the hot air between the shell 1 and the chamber body accommodating portion 2, i.e. most of the airflow in the air suction channel 5, the third heat dissipation air duct 8 and the fourth heat dissipation air duct 9, is uniformly discharged through multiple first heat dissipation air ducts 7 under the action of the first fan assembly 6.

[0126] By concentrating the control of the heat dissipation flow path and the airflow, the efficiency of the overall heat management is improved, and it is ensured that the device can maintain a relatively low temperature on the outer surface when working efficiently, avoiding overheating or hot air retention of the device.

[0127] Specifically, the second driving motor 421 drives the third fan blade 422, so that the excess hot air in the lower cooking chamber 4 can be discharged through the second air outlet 431. This exhaust action is only limited to the local hot air discharge in the lower cooking chamber 4, and does not directly affect the air flow in the third heat dissipation air duct 8.

[0128] Further, the third fan blade 422 does not participate in the air flow in the third heat dissipation air duct 8, avoiding the influence of the lower cooking chamber 4 on the air flow in the third heat dissipation air duct 8, thereby avoiding the complexity of air flow or the dispersion of hot air.

[0129] In this design, the hot air flow between the shell 1 and the bin body accommodating portion 2 (i.e. the air flow through the air suction channel 5, the third heat dissipation air duct 8 and the fourth heat dissipation air duct 9) is all concentrated by the first fan assembly 6, and the hot air is discharged through the plurality of first heat dissipation air ducts 7, avoiding the dispersion of hot air and ensuring the efficiency and accurate control of the heat dissipation process.

[0130] All hot air flows, including air from the air suction channel 5, the third heat dissipation air duct 8 and the fourth heat dissipation air duct 9, are sucked by the first fan assembly 6 and discharged through the plurality of first heat dissipation air ducts 7, so that the heat dissipation system of the entire device has stronger cooperative working capacity, ensuring that the heat can be efficiently discharged from the device.

[0131] And since the first fan assembly 6 is located at the top of the bin body accommodating portion 2, it sucks the hot air inside the air suction channel 5 and concentrates the hot air to be discharged through the plurality of first heat dissipation air ducts 7, which ensures that the hot air is sucked from the top and can flow through the vertical direction, quickly discharging heat from the device.

[0132] Since the hot air always flows upwards, installing the first fan assembly 6 at the top can fully utilize the natural upward trend of the hot air, making the hot air flow more smoothly into the fan, and more effectively sucking the rising hot air without creating additional air flow resistance inside the device, thereby improving the heat dissipation efficiency.

[0133] After the hot air rises to the top fan, it is quickly discharged from the device through the exhaust channel, avoiding the accumulation or uneven heat dissipation of the temperature inside the device, ensuring that the temperature of the outer surface of the shell 1 will not be too high.

[0134] Preferably, in this embodiment, the volume of the second air outlet portion 431 is smaller than the volume of the first air outlet portion 71, and preferably, the area of the second air outlet on the second air outlet portion 431 is smaller than the area of the first air outlet on the first air outlet portion 71, which can ensure the heat dissipation efficiency of the first heat dissipation air duct 7, and the second air outlet portion 431 as an auxiliary heat dissipation structure only assists the lower cooking bin 4 to discharge excess heat, and assists the third heat dissipation air duct 8 to ensure that the heat at the top of the lower cooking bin 4 is not too high, so the volume of the second air outlet portion 431 is smaller, avoiding the discharge of too much heat, leading to insufficient heat inside the lower cooking bin 4, causing improper food processing.

[0135] Preferably, the second heating device 42 further comprises a third heating body 424 arranged at the bottom of the lower cooking bin 4, which is designed to ensure the temperature inside the lower cooking bin 4 and ensure that the food materials inside the second pot body assembly 41 can be uniformly heated.

[0136] The above only further illustrates the technical content of the utility model with examples, so that the reader can more easily understand, but does not represent that the embodiment of the utility model is limited to this, and any technical extension or re-creation made according to the utility model is protected by the utility model. The protection scope of the utility model is subject to the patent claim.

Claims

1. An air fryer, characterized in that, The device includes a shell (1), which contains a compartment (2). The compartment (2) contains an upper cooking compartment (3) and a lower cooking compartment (4) arranged from top to bottom. There are at least two upper cooking compartments (3) and at least one lower cooking compartment (4). The upper cooking compartments (3) are independent of each other. Each upper cooking compartment (3) contains a corresponding first pot assembly (31), and each lower cooking compartment (4) contains a corresponding second pot assembly (41). The compartment (2) also contains a first heating device (32) corresponding to the upper cooking compartment (3) and a second heating device (42) corresponding to the lower cooking compartment (4).

2. An air fryer according to claim 1, characterized in that, The air fryer also includes a heat insulation structure, which includes an air intake channel (5), a first fan assembly (6), and a first heat dissipation duct (7). The air intake channel (5) covers the outside of the housing (2). The first heat dissipation duct (7) is located above the housing (2) and communicates with the air intake channel (5). The first fan assembly (6) is located in the first heat dissipation duct (7) and can draw air through the air intake channel (5). The first heat dissipation duct (7) can guide the airflow blown out by the first fan assembly (6) to the outside, so as to achieve heat dissipation of the air fryer.

3. An air fryer according to claim 2, characterized in that, The air intake channel (5) includes a second heat dissipation air duct (51) and two side air ducts (52) located on both sides of it. The second heat dissipation air duct (51) is located between the housing (1) and the first heat dissipation air duct (7), and the second heat dissipation air duct (51) is connected to the first heat dissipation air duct (7). The two side air ducts (52) are located on both sides of the housing (2), and each side air duct (52) is connected to the first heat dissipation air duct (7). The housing (1) is also provided with a first air inlet that is connected to the corresponding side air duct (52).

4. An air fryer according to claim 2, characterized in that, The first fan assembly (6) includes a first drive motor (61) and a first fan blade (62) disposed on its output end. The first heat dissipation duct (7) is also provided with a first air outlet (71) communicating with the outside. The first drive motor (61) can drive the first fan blade (62) to rotate, causing the air in the suction channel (5) to flow into the first heat dissipation duct (7) and be discharged to the outside from the first air outlet (71).

5. An air fryer according to claim 4, characterized in that, The first heat dissipation duct (7) includes a volute section (72), an air outlet section (73), and a volute tongue (74). The volute tongue (74) is located at the connection between the volute section (72) and the air outlet section (73). The first air outlet (71) is connected to the air outlet end of the air outlet section (73). The first fan blade (62) is eccentrically located inside the volute section (72).

6. An air fryer according to claim 4, characterized in that, The first heating device (32) includes a first heating element (321) disposed in the upper cooking chamber (3) and a second fan blade (322) located above the first heating element. The output end of the first drive motor (61) can pass through the first heat dissipation duct (7) and enter the upper cooking chamber (3) to be connected to the second fan blade (322). The first fan blade (62) is located above the second fan blade (322). Under the drive of the first drive motor (61), the second fan blade (322) can push the hot air in the upper cooking chamber (3) to flow, so as to realize the heat circulation of the upper cooking chamber (3).

7. An air fryer according to claim 2, characterized in that, The heat insulation structure also includes a third heat dissipation duct (8) located between the upper cooking chamber (3) and the lower cooking chamber (4). The side wall of the chamber housing (2) is provided with a first through hole (21), which enables the third heat dissipation duct (8) to communicate with the air intake channel (5).

8. An air fryer according to claim 7, characterized in that, The heat insulation structure also includes a fourth heat dissipation duct (9) located between the back of the shell (1) and the compartment receiving part (2). The fourth heat dissipation duct (9) is correspondingly arranged with the upper cooking compartment (3). The fourth heat dissipation duct (9) is connected to the air intake channel (5) and the third heat dissipation duct (8) respectively.

9. An air fryer according to claim 7, characterized in that, The second heating device (42) includes a second drive motor (421) located in the third heat dissipation duct (8), a third fan blade (422) located in the lower cooking chamber (4), and a second heating element (423) located in the lower cooking chamber (4). The third fan blade (422) is located above the second heating element (423). The output end of the second drive motor (421) passes into the lower cooking chamber (4) and is connected to the third fan blade (422) in a transmission. Under the drive of the second drive motor (421), the third fan blade (422) can drive the hot air in the lower cooking chamber (4) to flow, so as to realize the heat circulation of the lower cooking chamber (4).

10. An air fryer according to claim 7, characterized in that, The lower cooking chamber (4) has an upwardly protruding assembly groove (43) at its top. The third fan blade (422) is located inside the assembly groove (43). The second drive motor (421) is located on the outer side of the top of the assembly groove (43). The output end of the second drive motor (421) passes through the assembly groove (43) and is connected to the third fan blade (422) for transmission. The outer side of the assembly groove (43) has a second air outlet (431) that communicates with the outside. When the second drive motor (421) can drive the second fan blade (322) to rotate, it will cause the hot air in the lower cooking chamber (4) to be discharged to the outside through the second air outlet (431).

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