Air fryer

Abstract

The invention 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. The number of the upper-layer cooking bins is larger than that of the lower-layer cooking bins, a multi-bin independent design is adopted, different cooking bins are heated respectively in combination with the cooking bin bodies of different upper and lower layers and the independent heating devices, it is ensured that the temperature is evenly distributed in respective cavities, and through reasonable distribution of heating areas and an independent control system, the heating efficiency is improved. The vertical space of the equipment is fully utilized by the multi-layer structure, the problem of mixed tastes is avoided by the non-interfering independent design, the multi-layer structure is suitable for making food with different tastes or cooking modes, more functions are realized under the condition that a user does not increase the size of the equipment, and the multi-layer structure is particularly suitable for families with limited kitchen spaces.

Description

Technical Field

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

[0002] As a new type of kitchen appliance, air fryer has quickly become popular since its launch with its "less oil" and "healthy cooking" concepts, and is deeply loved by consumers. Traditional air fryers use high-speed hot air circulation technology to evenly circulate the heated air through an internal fan to achieve the effect of rapid heating and cooking. Because it can significantly reduce the use of oil while retaining the crispy taste of food, air fryer has become an important tool for healthy cooking in many families.

[0003] However, existing air fryers generally have design limitations. Most traditional air fryers are only equipped with one compartment to accommodate the pot body, that is, one cooking chamber. Although the single compartment structure of this design is suitable for making one dish at a time, it is insufficient in functionality today with the growing demand for diversified cooking. For example, when users want to cook two different types of food (such as chicken wings and French fries) at the same time, they can only operate in batches, which is not only time-consuming and labor-intensive, but may also result in unsatisfactory taste and production effects of the food. In addition, different foods have different cooking requirements (such as temperature, time, etc.), and air fryers with a single compartment design are difficult to meet such diversified and simultaneous cooking needs.

[0004] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0005] The above-mentioned existing air fryers are only equipped with one compartment to accommodate the pot body, that is, one cooking chamber, which seems to be insufficient in function.

[0006] The technical solution adopted by the present invention to solve the technical problem is: An air fryer comprises a shell, wherein a bin accommodating portion is arranged in the shell, and an upper cooking bin and a lower cooking bin are arranged in the bin accommodating portion from top to bottom, wherein at least two upper cooking bins are arranged, and at least one lower cooking bin is arranged, the number of the upper cooking bins is greater than the number of the lower cooking bins, and the multiple upper cooking bins are independent of each other; a corresponding first pot body assembly is arranged in each upper cooking bin, and a corresponding second pot body assembly is arranged in each lower cooking bin; a first heating device corresponding to the upper cooking bin and a second heating device corresponding to the lower cooking bin are also arranged in the bin accommodating portion.

[0007] An air fryer as described above, the air fryer also includes a heat insulation structure, the heat insulation structure includes an air suction channel, a first fan assembly and a first heat dissipation duct, the air suction channel is covered on the outside of the bin body accommodating portion, the first heat dissipation duct is located above the bin body accommodating portion and is communicated with the air suction channel, the first fan assembly is arranged in the first heat dissipation duct, and it can absorb air through the air suction channel, the first heat dissipation duct can guide the airflow blown by the first fan assembly to be discharged to the outside, so as to achieve heat dissipation of the air fryer.

[0008] In an air fryer as described above, the air suction channel includes a second heat dissipation air duct and two lateral air ducts arranged on both sides thereof, the second heat dissipation air duct is located between the shell and the first heat dissipation air duct, and the second heat dissipation air duct is communicated with the first heat dissipation air duct; the two lateral air ducts are located on both sides of the bin accommodating portion, and each of the lateral air ducts is communicated with the first heat dissipation air duct, and the shell is also provided with a first air inlet communicated with the corresponding lateral air duct.

[0009] In an air fryer as described above, the first fan assembly includes a first drive motor and a first fan blade arranged on the output end thereof, and the first heat dissipation duct is also provided with a first air outlet portion communicated with the outside world. The first drive motor can drive the first fan blade to rotate, thereby causing the air in the suction channel to flow into the first heat dissipation duct and be discharged to the outside world from the first air outlet portion.

[0010] In an air fryer as described above, the first heat dissipation duct includes a volute section, an air outlet section and a volute tongue, the volute tongue is arranged at the connection between the volute section and the air outlet section, the first air outlet portion is connected to the air outlet end of the air outlet section, and the first fan blade is eccentrically arranged in the volute section.

[0011] In an air fryer as described above, the first heating device includes a first heating element arranged in an upper cooking chamber and a second fan blade located above the first heating element, the output end of the first driving motor can pass through the first heat dissipation duct and penetrate into the upper cooking chamber to be transmission-connected to the second fan blade, the first fan blade is located above the second fan blade, and the second fan blade, driven by the first driving motor, can promote the flow of hot air in the upper cooking chamber to realize heat circulation in the upper cooking chamber.

[0012] In an air fryer as described above, the heat insulation structure also includes a third heat dissipation duct located between the upper cooking chamber and the lower cooking chamber, and a first through hole is provided on the side wall of the chamber accommodating portion, and the first through hole can enable the third heat dissipation duct to communicate with the air suction channel.

[0013] In an air fryer as described above, the heat insulation structure also includes a fourth heat dissipation duct arranged between the back side of the shell and the bin accommodating portion, the fourth heat dissipation duct is arranged corresponding to the upper cooking bin, and the fourth heat dissipation duct is respectively communicated with the suction channel and the third heat dissipation duct.

[0014] In an air fryer as described above, the second heating device includes a second drive motor located in a third heat dissipation duct, a third fan blade located in a lower cooking chamber, and a second heating element located in the lower cooking chamber, the third fan blade is located above the second heating element, the output end of the second drive motor penetrates into the lower cooking chamber and is transmission-connected to the third fan blade, and the third fan blade, driven by the second drive motor, can promote the flow of hot air in the lower cooking chamber to achieve heat circulation in the lower cooking chamber.

[0015] In an air fryer as described above, an upwardly protruding assembly groove is provided on the top of the lower cooking chamber, the third fan blade is located in the assembly groove, the second drive motor is arranged on the top outer side of the assembly groove, the output end of the second drive motor penetrates into the assembly groove and is transmission-connected with the third fan blade, and a second air outlet portion communicating with the outside is provided on the outside of the assembly groove, and when the second drive motor can drive the second fan blade to rotate, the hot air in the lower cooking chamber can be discharged to the outside through the second air outlet portion.

[0016] The beneficial effects of the present invention are: An air fryer of the present embodiment relates to the technical field of household appliances, and comprises a shell, wherein a bin accommodating portion is arranged in the shell, and an upper cooking bin and a lower cooking bin are arranged in the bin accommodating portion in sequence from top to bottom, wherein at least two upper cooking bins are arranged, and at least one lower cooking bin is arranged, and the number of the upper cooking bins is greater than the number of the lower cooking bins. An independent multi-bin design is adopted, and cooking bins of different layers and independent heating devices are combined to heat different cooking bins respectively, ensuring that the temperature is evenly distributed in their respective cavities. By reasonably distributing the heating areas and the independent control system, diversified cooking needs are met, and the multi-layer structure makes full use of the vertical space of the equipment, and the independent design without interfering with each other avoids the problem of mixed flavors, which is suitable for making food of different flavors or cooking methods, and users can realize more functions without increasing the volume of the equipment, which is particularly suitable for families with limited kitchen space.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the structural schematic diagrams of the present invention; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is one of the structural schematic diagrams of the hidden pot body assembly of the present invention; Figure 4 This is the second structural schematic diagram of the hidden pot body assembly of the present invention; Figure 5 It is one of the decomposition schematic diagrams of the present invention; Figure 6 This is the second decomposition schematic diagram of the present invention; Figure 7 It is a bottom view schematic diagram of the first heat dissipation duct hidden bottom shell of the present invention; Figure 8 It is a top view schematic diagram of the present invention; Fig. 9 for Figure 8 A cross-sectional view along line AA and a partial enlarged view; Fig.10 for Figure 8 Schematic cross-sectional view along line BB; Fig.11 for Figure 8 Schematic cross-sectional view along line CC. DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 11 As shown, an air fryer of the present embodiment comprises a shell 1, wherein a bin accommodating portion 2 is arranged in the shell 1, wherein an upper cooking bin 3 and a lower cooking bin 4 are arranged in the bin accommodating portion 2 from top to bottom, wherein at least two upper cooking bins 3 are arranged, and at least one lower cooking bin 4 is arranged, the number of the upper cooking bins 3 is greater than the number of the lower cooking bins 4, and the plurality of upper cooking bins 3 are independent of each other; a corresponding first pot body assembly 31 is arranged in each upper cooking bin 3, and a corresponding second pot body assembly 41 is arranged in each lower cooking bin 4; a first heating device 32 corresponding to the upper cooking bin 3 and a second heating device 42 corresponding to the lower cooking bin 4 are also arranged in the bin accommodating portion 2.

[0021] Specifically, the air fryer of this embodiment adopts a multi-chamber independent design, combining upper and lower cooking chambers with independent heating devices, and meets diverse cooking needs through reasonable distribution of heating areas and independent control systems.

[0022] Preferably, the upper cooking chamber 3 and the lower cooking chamber 4 are independently designed, and an independent pot body assembly and a corresponding heating device are arranged in each cooking chamber. The first heating device 32 and the second heating device 42 are responsible for heating different cooking chambers respectively to ensure that the temperature is evenly distributed in their respective cavities, thereby avoiding overheating or uneven heating of food.

[0023] In addition, the heating function of each cooking chamber is controlled by a separate control module. Users can set the cooking mode, temperature and time of different chambers through the smart panel. The temperature and time of each cooking chamber can be set independently to meet the cooking needs of different foods (such as high-temperature frying of French fries and low-temperature baking of vegetables can be done at the same time). Through independent heating devices and modular pot body components, the equipment can support frying, baking, stewing, boiling and other cooking methods. It has stronger compatibility and more comprehensive functions. Users can choose different cooking modes according to their needs to meet daily family cooking, holiday gatherings or special dietary requirements.

[0024] Preferably, during the cooking process, the working status of each compartment (such as remaining time, temperature) will be displayed in real time to facilitate user control.

[0025] Furthermore, the multi-compartment design allows users to cook a variety of different foods at the same time. For example, the two cooking compartments on the upper layer can be used to fry French fries and chicken wings respectively, while the lower cooking compartment can be used to roast a whole chicken or other large foods at the same time. This design avoids the trouble of traditional air fryers requiring cooking in batches, greatly improves cooking efficiency, and is especially suitable for busy families and gatherings.

[0026] The multi-layer structure makes full use of the vertical space of the equipment. Multiple small cooking chambers are designed on the upper layer, which are suitable for making small portions or diversified dishes. The larger cooking chambers are designed on the lower layer, which are suitable for processing large-volume ingredients. The independent designs that do not interfere with each other avoid the problem of mixed flavors and are suitable for making food with different flavors or cooking methods. Users can achieve more functions without increasing the size of the equipment. It is especially suitable for families with limited kitchen space.

[0027] Preferably, the independently heated multi-chamber design effectively saves energy by heating only the actual used part of the chamber, thus avoiding unnecessary energy waste.

[0028] Preferably, the pot body assembly of each cooking chamber can be disassembled separately for easy cleaning, avoiding the problem of difficult cleaning after mixed cooking of multiple foods in traditional single-chamber designs. Users can flexibly choose or replace different pot body assemblies to adapt to different cooking tasks.

[0029] like Figures 1 to 11 As shown, the air fryer of the present embodiment also includes a heat insulation structure, which includes an air suction channel 5, a first fan assembly 6 and a first heat dissipation duct 7, the air suction channel 5 is covered on the outside of the bin body accommodating portion 2, the first heat dissipation duct 7 is located above the bin body accommodating portion 2 and is communicated with the air suction channel 5, the first fan assembly 6 is arranged in the first heat dissipation duct 7, and it can absorb air through the air suction channel 5, the first heat dissipation 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.

[0030] Specifically, when the multi-compartment air fryer is running, the first fan assembly 6 starts to work, sucks in air through the suction channel 5, and brings the hot air in the shell 1 into the first heat dissipation duct 7, and the airflow blown out by the first fan assembly 6 can discharge the hot air to the outside through the first heat dissipation duct 7, thereby taking away the heat inside the shell 1, and the air is continuously extracted and discharged to ensure that the heat can be effectively dissipated to prevent the outer surface temperature of the shell 1 from being too high. Through the combination of the suction channel 5 and the first heat dissipation duct 7, and through the operation of the fan assembly 6, the heat in the shell 1 can be quickly discharged, thereby effectively reducing 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 scalding, especially in a home use environment, vulnerable groups such as children and the elderly can use the multi-compartment air fryer more safely.

[0031] Furthermore, it is also possible to prevent internal components from being damaged due to overheating inside the housing 1 .

[0032] Preferably, since the air suction channel 5 is located between the shell 1 and the warehouse accommodating portion 2, an insulating layer is formed, and the flowing air is used to drive the hot air overflowing from the warehouse accommodating portion 2 to be discharged through the coordinated action of the first fan assembly 6 and the first heat dissipation duct 7. This not only prevents the hot air generated in the warehouse accommodating portion 2 from being directly transferred to the external shell, avoiding high temperature on the outer surface of the air fryer, but also ensures that the temperature of the device surface is relatively low, thereby improving the safety of users.

[0033] Through the air flow of the suction channel 5, the hot air overflowing from the warehouse body accommodating part 2 is quickly brought to the first fan assembly 6, and then discharged to the outside through the first heat dissipation duct 7. This multi-level heat dissipation path ensures that the heat can be discharged efficiently, avoiding heat accumulation and overheating. The efficient airflow generated by the first fan assembly 6 helps to take the hot air away from the warehouse body accommodating part 2 and quickly discharge it through the duct system, thereby improving the working efficiency of the entire heat dissipation system.

[0034] The dual functions of the insulation layer and flowing air effectively control the temperature of the air fryer shell, preventing the temperature from being too high and affecting safety. Especially in a home environment, it avoids the risk of burns caused by the high surface temperature of the equipment and ensures the safety of the user.

[0035] The air suction channel takes away the hot air in the bin accommodating part 2 through the flowing air, and uses the air flow to accelerate the heat dissipation, thereby optimizing the heat management. Through this design, the hot air will not be retained in the equipment, but will flow smoothly to the outside through the air duct system, thereby effectively improving the heat dissipation performance of the air fryer, which not only reduces the accumulation of heat inside, but also ensures that the operating temperature of each component of the air fryer is within a safe range, thereby avoiding damage to internal components due to overheating.

[0036] like Figures 1 to 11 As shown, the air suction channel 5 of this 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 shell body 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 warehouse accommodating portion 2, and each of the lateral air ducts 52 is communicated with the first heat dissipation air duct 7, and the shell body 1 is also provided with a first air inlet communicated with the corresponding lateral air duct 52.

[0037] 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 with the help of the airflow of the fan assembly, drives the hot air in the lateral air duct 52 to flow to the second heat dissipation duct 51. The hot air is guided to the second heat dissipation duct 51 through the lateral air duct 52, and then sucked into the first heat dissipation duct 7 through the fan assembly 6 and discharged to complete the heat dissipation.

[0038] 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 quickly 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-level heat dissipation path ensures that the heat inside the air fryer is released more efficiently, 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 outer casing will not overheat. The multi-level design of the air duct can form a more effective air flow channel, optimize heat discharge, and further improve the heat dissipation effect.

[0039] Through the suction effect of the first fan assembly 6 and the multi-channel design, the heat is quickly discharged to the outside, avoiding the air fryer shell from overheating, thereby reducing the risk of burns, especially when used at home. For children and the elderly, the safety of using the air fryer is greatly improved.

[0040] By adding lateral air ducts, the air flow is more flexible and can more efficiently guide the hot air from the sides of the shell 1 and the bin accommodating portion 2 to the central heat dissipation path. This design can make the airflow more uniform and efficient. The design of the first air inlet ensures that the external air can smoothly enter the lateral air duct, and cooperates with the suction effect of the fan assembly to enhance air circulation and further accelerate heat dissipation.

[0041] In addition, the first heat dissipation duct 7 is located between the bin body accommodating portion 2 and the second heat dissipation duct 51, that is, the first heat dissipation duct 7 is located at the top of the bin body accommodating portion 2, and is located at a higher position of the shell 1, and utilizes the natural tendency of hot air to rise, so that when the hot air is discharged, it can be quickly discharged to the top of the shell 1, avoiding the hot air from re-entering the suction channel 5 through the first air inlet for heat circulation, ensuring that the suction channel 5 inhales cold air for heat dissipation, and ensuring the heat dissipation effect of the air fryer.

[0042] like Figures 1 to 11 As shown, the first fan assembly 6 of the present embodiment includes a first drive motor 61 and a first fan blade 62 arranged on the output end thereof, and the first heat dissipation duct 7 is also provided with a first air outlet 71 communicated with the outside world, and the first drive motor 61 can drive the first fan blade 62 to rotate, so as to cause the air in the suction channel 5 to flow into the first heat dissipation duct 7 and be discharged to the outside world from the first air outlet 71.

[0043] The first drive motor 61 is located in the air suction channel 5 , the first fan blade 62 is located in the first heat dissipation duct 7 , and the output end of the first drive motor 61 penetrates into the first heat dissipation duct 7 and is transmission-connected to the first fan blade 62 .

[0044] When the air fryer starts working, the first drive motor 61 starts to drive the first fan blade 62 to rotate. As the first fan blade rotates, the hot air in the air suction channel 5 is sucked in and guided into the first heat dissipation duct 7. The airflow passing through the first heat dissipation duct 7 is pushed and finally discharged to the outside of the air fryer through the first air outlet 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 to prevent excessive heat accumulation. This design ensures that heat will not be retained inside the air fryer, reduces the outer shell temperature, and optimizes the heat discharge path.

[0045] Specifically, the first drive motor 61 and the first fan blade 62 are designed to be connected by transmission through the output end passing through the heat dissipation air duct, which makes the structure more compact and simplifies the complexity, while improving the stability and reliability of the fan assembly. The installation position of the fan assembly is reasonably designed, which can ensure good heat dissipation effect without taking up too much space, thereby ensuring the compact design of the air fryer.

[0046] Preferably, the first heat dissipation duct 7 is provided with a first avoidance hole for avoiding the output end of the first drive motor 61. The output end of the first drive motor 61 passes through the first avoidance 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.

[0047] Preferably, the shell 1 is provided with a second avoidance hole corresponding to the first air outlet portion 71, and the first air outlet portion 71 extends out of the shell 1 through the second avoidance hole, so that hot air can be smoothly discharged from the air fryer to avoid interference between the discharged hot air and other parts of the shell 1.

[0048] Preferably, the first air outlet portion 71 includes a first air outlet shell and a first air outlet provided in 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.

[0049] Preferably, the first air outlet is arranged at the top of the first air outlet shell and is arranged upward. The existence of the first air outlet portion 71 can change the outlet direction of the airflow in the first heat dissipation duct 7, so that the hot air is discharged to the top of the shell 1 and quickly dissipated outward. By changing the outlet direction of the hot air, it can help prevent the hot air from being sucked into the air suction channel 5 again, which is helpful for the heat dissipation of the air fryer. In addition, by discharging the hot air upward, the natural tendency of the hot air to rise is utilized to quickly dissipate outward, thereby reducing the reflux and accumulation of hot air inside and / or outside the shell 1.

[0050] In other embodiments, the first air outlet is disposed on one side of the first air outlet shell, and a suitable design can be selected according to actual needs.

[0051] like Figures 1 to 11 As shown, the first heat dissipation duct 7 of the present embodiment is provided with a first ventilation hole 75, and the first heat dissipation duct 7 is communicated with the air suction 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 the airflow, so that the hot air can obtain a smoother discharge path when passing through the air duct.

[0052] like Figures 1 to 11 As shown, the first heat dissipation duct 7 of the present embodiment includes a volute section 72, an air outlet section 73 and a volute tongue 74, the volute tongue 74 is arranged at the connection between the volute section 72 and the air outlet section 73, the first air outlet portion 71 is connected to the air outlet end of the air outlet section 73, and the first fan blade 62 is eccentrically arranged in the volute section 72.

[0053] By eccentrically setting the center of the first fan blade 62 and the center of the volute section 72, the relative position of the first fan blade 62 and the volute section 72 is changed, and the air outlet angle of the first fan blade 62 is changed accordingly, the flow field of the volute tongue 74 is changed, and 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, and the airflow loss in the first heat dissipation duct 7 is reduced, thereby increasing the air volume.

[0054] Moreover, during the rotation of the first blade 62, more airflow is thrown out from the first blade 62 in the volute section 72 and directly enters the air outlet section 73, thereby reducing the airflow that hits the volute tongue 74, reducing the high-pressure area of ​​the volute tongue 74, and at the same time improving the smoothness of the airflow in the air duct and increasing the air volume.

[0055] The eccentric setting makes the air flow in the air duct smoother, without too much backflow or turbulence, increasing the smoothness of the air flow in the air duct, which makes the equipment more efficient when working and avoids the energy efficiency loss caused by uneven airflow.

[0056] Preferably, the first drive motor 61 of the present embodiment is located outside the volute section 72, and the first drive motor 61 is located in the air suction channel 5. Preferably, the first drive motor 61 of the present embodiment is located in the second heat dissipation duct 51. Such a design allows the first drive motor 61 to have sufficient heat dissipation space, and can also help the first drive motor 61 to dissipate heat when the airflow flows. It is also beneficial to optimize the internal space of the first heat dissipation duct 7, making the structure more compact, and reducing the interference of the motor on the airflow path, ensuring smooth airflow in the first heat dissipation duct 7, and ensuring normal heat dissipation.

[0057] Preferably, the air outlet section 73 of this embodiment includes a first air outlet area 731 and a second air outlet area 732, wherein 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 increases along the volute section 72 toward the second air outlet area 732; The purpose of this design is to provide a smooth airflow transition between the volute section 72 and the second air outlet area 732. As the inner diameter expands, the airflow speed gradually slows down and the pressure is gradually released, thereby reducing the turbulence and noise of the airflow and optimizing the flow stability of the airflow.

[0058] Specifically, the airflow in the volute section 72 may 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 be smoothly expanded to the second air outlet area 732, avoiding impact-type pressure changes, thereby improving the overall efficiency of the air duct.

[0059] Preferably, the second air outlet area 732 in this embodiment 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 from the first air outlet area 731 to the first air outlet portion 71; In the air duct design, the compression of the air flow often leads to an increase in the air flow speed. By gradually reducing the inner diameter of the second air outlet area 732, the air flow speed will be accelerated, which helps the air flow to smoothly enter the first air outlet 71 and ensures that the air flow in the air duct is evenly distributed, avoiding uneven heat dissipation caused by excessive or insufficient air volume.

[0060] Preferably, in the design in which the inner diameter of the first air outlet area 731 is gradually enlarged, the resistance of the airflow is reduced when it flows through this section, the airflow can flow more smoothly, the airflow is no longer affected by the rapidly expanding resistance, the energy loss is minimized, and it helps to reduce the turbulence of the airflow in the transition section, avoiding rapid flow instability or pressure drop. The reduction of turbulence means that the airflow flows more smoothly in the air duct, can maintain a higher air volume output, and can maintain a lower energy loss.

[0061] Preferably, the inner diameter of the second air outlet area 732 gradually decreases, which can speed up the airflow in the process of flowing to the first air outlet 71. This acceleration effect helps to evenly discharge the airflow in the air duct, avoids local airflow being too slow or stagnates, ensures that the air can smoothly take away the heat, and improves the heat dissipation effect. The design of gradually decreasing inner diameter also helps to provide a balanced air volume 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 air volume is uniform, which is crucial to the thermal management and heat dissipation of the equipment.

[0062] Furthermore, the gradually expanding inner diameter can reduce the fluctuation of the airflow, making the airflow more stable when passing through the first air outlet area 731, thereby avoiding heat accumulation caused by airflow impact. At the same time, the inner diameter of the second air outlet area 732 gradually decreases, allowing the airflow to enter the first air outlet part 71 at a more appropriate speed, thereby improving the heat dissipation efficiency.

[0063] like Figures 1 to 11 As shown, the first heating device 32 of the present embodiment includes a first heating body 321 arranged in the upper cooking chamber 3 and a second fan blade 322 located above the first heating body, the output end of the first driving motor 61 can pass through the first heat dissipation duct 7, and penetrate into the upper cooking chamber 3 to be transmission-connected with the second fan blade 322, the first fan blade 62 is located above the second fan blade 322, and the second fan blade 322, driven by the first driving motor 61, can promote the flow of hot air in the upper cooking chamber 3 to realize the heat circulation of the upper cooking chamber 3.

[0064] Specifically, the first drive motor 61 realizes different functions by driving the first fan blade 62 and the second fan blade 322 at the same time. The function of the first fan blade 62 is to inhale external air through the suction channel 5 and push the air through the first heat dissipation duct 7 for heat dissipation. At the same time, the second fan blade 322 rotates to promote the flow of hot air in the upper cooking chamber 3, and ensures that the temperature of the upper cooking chamber 3 is evenly distributed by heating the air and forming a hot air circulation.

[0065] When the first heating element 321 starts to heat, the second fan blades 322 evenly distribute the heat in the upper cooking chamber 3 through air flow, thereby realizing hot air circulation, while the first fan blades 62 inhale air through the suction channel 5 and dissipate heat through the first heat dissipation duct 7.

[0066] Specifically, by coordinating the heating and cooling functions through the same drive motor, interference between independent cooling drive motors and heating drive motors is avoided, making the device structure more compact and simple, and the operation more efficient.

[0067] This design reduces the need for additional motors and fans, lowering the energy consumption of the equipment while improving the overall operating efficiency of the equipment.

[0068] Furthermore, the second fan blades 322 promote the air flow in the upper cooking chamber 3, forming a hot air circulation, ensuring uniform temperature distribution in the upper cooking chamber, while the first fan blades 62 maintain the internal temperature of the motor and the air fryer stable by effectively dissipating heat, avoiding temperature fluctuations caused by overheating. This design synergy helps to maintain the accuracy of temperature control within the system, making the cooking process more stable, achieving an ideal heating effect, and preventing the outer wall temperature of the air fryer shell from being too high.

[0069] Furthermore, the first drive motor 61 drives two fan blades at the same time, avoiding redundant drive motors and fans, thereby reducing the overall power consumption and achieving the purpose of energy saving. At the same time, since the number of additional fans is reduced, the noise during equipment operation is also reduced accordingly, which improves the user experience. Efficient heat dissipation and heating work together, allowing the system to complete the heat dissipation and heating tasks in a shorter time, thereby improving the overall energy efficiency.

[0070] like Figures 1 to 11 As shown, the heat insulation structure of this embodiment also includes a third heat dissipation duct 8 located between the upper cooking chamber 3 and the lower cooking chamber 4, and a first through hole 21 is provided on the side wall of the chamber accommodating portion 2, and the first through hole 21 enables the third heat dissipation duct 8 to communicate with the air suction channel 5.

[0071] Preferably, the first fan assembly 6 inhales external air through the air suction channel 5 to drive air flow, and guides the inhaled air to the first heat dissipation duct 7 for heat dissipation.

[0072] At the same time, due to the design of the first through hole 21, when the first fan assembly 6 is working, it not only drives the air in the air suction channel 5 to flow into the first heat dissipation air channel 7, but also introduces the air in the third heat dissipation air channel 8 into the air suction channel 5 through the first through hole 21. Therefore, the hot air in the third heat dissipation air channel 8 is also sucked into the air suction channel 5, further taking away the heat between the two cooking chambers, playing a role in effectively dissipating the heat between the two chambers.

[0073] Furthermore, the upper cooking chamber 3 and the lower cooking chamber 4 will generate different temperatures during use. Especially when the workload is heavy, the heat between the two chambers is more concentrated. The design of the third heat dissipation duct 8 enables the heat to be effectively carried away through air flow, avoiding excessive heat accumulation and further improving the heat dissipation efficiency.

[0074] By connecting the third heat dissipation 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 chambers. This not only ensures the balanced distribution of temperature inside the equipment, but also improves the heat dissipation efficiency and avoids local overheating.

[0075] Preferably, the third heat dissipation duct 8 can provide a heat dissipation space between the upper cooking chamber 3 and the lower cooking chamber 4, and ensure that there is a certain distance between the upper cooking chamber 3 and the lower cooking chamber 4, ensuring that the heat therebetween does not affect each other too much.

[0076] like Figures 1 to 11 As shown, the heat insulation structure of this embodiment also includes a fourth heat dissipation duct 9 arranged between the back side of the shell 1 and the bin accommodating portion 2, and the fourth heat dissipation duct 9 is arranged corresponding to the upper cooking bin 3, and the fourth heat dissipation duct 9 is communicated with the suction channel 5 and the third heat dissipation duct 8 respectively.

[0077] In this embodiment, both sides of the fourth heat dissipation air duct 9 are communicated with the air suction channel 5 respectively, and the bottom of the fourth heat dissipation air duct 9 is communicated with the top of the third heat dissipation air duct 8 .

[0078] Preferably, both sides of the fourth heat dissipation duct 9 are connected to the suction channel 5, so that the air in the suction channel 5 can not only flow into the first heat dissipation duct 7 for heat dissipation, but also the air in the fourth heat dissipation duct 9 can flow into the first heat dissipation duct 7 through the suction channel 5 for heat dissipation, thereby further taking away the heat from the back of the device.

[0079] At the same time, the bottom of the fourth heat dissipation duct 9 is connected with the top of the third heat dissipation duct 8, forming a multi-channel heat dissipation system. When the first fan assembly 6 is working, it drives the air flow, not only sucking air into the first heat dissipation duct 7, but also guiding the hot air in the fourth heat dissipation duct 9 and the third heat dissipation duct 8 into the air intake channel 5, and finally discharges the hot air through the first heat dissipation duct 7 to achieve the effect of comprehensive heat dissipation.

[0080] Specifically, the first fan assembly 6 inhales external air through the air suction channel 5 and pushes the air to flow toward a plurality of heat dissipation ducts, including a first heat dissipation duct 7 , a third heat dissipation duct 8 , and a fourth heat dissipation duct 9 .

[0081] During the whole process, the air flow of the fourth heat dissipation duct 9 helps to take away the heat between the back of the shell 1 and the bin accommodating portion 2. At the same time, the air flow through the third heat dissipation duct 8 further takes away the heat between the upper cooking bin 3 and the lower cooking bin 4. Moreover, the air flow of the fourth heat dissipation duct 9 and the third heat dissipation duct 8 will drive the heat into the air suction channel 5, and then discharge it uniformly through the first heat dissipation duct 7.

[0082] Preferably, the fourth heat dissipation duct 9 is located between the back of the shell 1 and the bin accommodating portion 2, which serves to provide additional heat dissipation space for the back of the device, thereby helping to effectively disperse the heat on the back of the air fryer.

[0083] Specifically, the connection between the fourth heat dissipation duct 9 and the third heat dissipation duct 8 enables heat to flow through multiple channels simultaneously, increasing the heat dissipation area and the number of channels, and effectively improving the heat dissipation efficiency. In particular, the design of the fourth heat dissipation duct 9 enables the heat on the back of the device to be effectively dissipated, avoiding the phenomenon of heat accumulation.

[0084] When the first fan assembly 6 drives the air flow, it can achieve a coordinated effect on the air flow of multiple heat dissipation areas, thereby improving the heat dissipation capacity as a whole. This not only ensures that the equipment will not overheat when running at high load, but also ensures that the equipment can work stably for a long time.

[0085] The heat dissipation space on the back of the device is provided by the fourth heat dissipation air duct 9. By connecting with the air suction channel 5, the hot air from the back of the device can be taken away, which can effectively prevent local overheating of a part of the device due to excessive heat accumulation.

[0086] The design of the third heat dissipation duct 8 and the fourth heat dissipation duct 9 effectively avoids uneven heat between the upper cooking chamber 3 and the lower cooking chamber 4, ensures uniform temperature distribution, and thus improves the cooking effect of food.

[0087] Furthermore, through this multi-level heat dissipation design, the fourth heat dissipation duct 9 can prevent damage to the motor and internal electrical components of the equipment due to overheating, thereby increasing the service life of the equipment. The coordinated work of the first fan assembly 6 can ensure that the equipment maintains a suitable operating temperature throughout the entire working process, avoiding the risk of equipment failure due to poor heat dissipation in a high temperature environment.

[0088] The optimization of the heat dissipation system not only improves the safety of the equipment, but also reduces repairs and failures caused by overheating, thereby reducing the maintenance cost of the equipment.

[0089] The design of the fourth heat dissipation duct 9 makes effective use of the space between the shell 1 and the compartment accommodating portion 2, avoiding extra space waste. Through this reasonable space planning, the internal structure of the device is compactly optimized. At the same time, the heat dissipation space on the back also increases the heat dissipation surface, which helps to improve the overall heat dissipation efficiency.

[0090] like Figures 1 to 11 As shown, the second heating device 42 of this embodiment includes a second driving 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 body 423 located in the lower cooking chamber 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 cooking chamber 4, and is transmission-connected to the third fan blade 422, and the third fan blade 422, driven by the second driving motor 421, can promote the flow of hot air in the lower cooking chamber 4 to realize the heat circulation of the lower cooking chamber 4.

[0091] Since the third fan blade 422 continuously promotes the air flow in the lower cooking chamber 4, the air and heat in the lower cooking chamber 4 form an effective circulation flow path, which can not only accelerate the heat transfer and ensure that the food is heated evenly, but also improve the thermal efficiency so that each area in the lower cooking chamber can be fully heated.

[0092] like Figures 1 to 11 As shown, in this embodiment, the top of the lower cooking chamber 4 is provided with an upwardly protruding assembly groove 43, the third fan blade 422 is located in the assembly groove 43, the second drive motor 421 is arranged on the top outer side of the assembly groove 43, the output end of the second drive motor 421 penetrates into the assembly groove 43 and is transmission-connected with the third fan blade 422, and the outer side of the assembly groove 43 is provided with a second air outlet 431 communicated with the outside, when the second drive motor 421 can drive the second fan blade 322 to rotate, the hot air in the lower cooking chamber 4 can be discharged to the outside through the second air outlet 431.

[0093] Specifically, when the second drive motor 421 is working, it drives the third fan blades 422 to rotate. The rotating third fan blades 422 promote the flow of hot air in the lower cooking chamber 4, forming an effective air circulation system, and the hot air circulates through the air flow path in the assembly groove 43 to various areas of the lower cooking chamber, and is finally discharged to the outside through the second air outlet 431 on the outside of the assembly groove 43. The design of the second air outlet 431 enables the hot air in the lower cooking chamber 4 to be effectively discharged, thereby avoiding the accumulation of heat in the lower cooking chamber 4.

[0094] Specifically, the second air outlet 431 is connected to 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 excessively high local temperature of the lower cooking chamber 4 and maintaining the internal temperature of the air fryer stable.

[0095] In addition, the hot air is discharged to the outside through the second air outlet 431, which helps to reduce the internal temperature of the device and improve the overall heat dissipation effect.

[0096] Furthermore, the provision of the second air outlet 431 allows the excess hot air in the lower cooking chamber 4 to be quickly discharged, thus avoiding heat accumulation, thereby further improving the heat dissipation efficiency of the air fryer.

[0097] Furthermore, the rotation of the third fan blade 422 promotes the uniform distribution of hot air in the lower cooking chamber 4 by forcing air flow. The air circulation not only allows the heat released by the second heating element 423 to be more efficiently transmitted to each food surface, but also ensures that the temperature of each area remains consistent, and avoids the problem of excessively high or low temperatures in certain parts of the lower cooking chamber 4, thereby making the cooking process more uniform and improving the cooking effect of the food.

[0098] Moreover, in this embodiment, the synergistic effect of the second air outlet 431 and the third heat dissipation duct 8 helps to prevent the temperature at the top of the lower cooking chamber 4 from being too high, thereby ensuring the normal operation of the second drive motor 421.

[0099] Preferably, the second heating element 423 is located in the assembly groove 43 and below the third fan blade 422. Such a design is conducive to a more compact structure of the lower cooking chamber 4 and to miniaturization of the air fryer.

[0100] Preferably, the number of upper cooking chambers 3 in this embodiment is at least two, and they are independent of each other. The first fan assembly 6 and the first heat dissipation duct 7 are arranged in a one-to-one correspondence, and the first heat dissipation duct 7 is arranged in a one-to-one correspondence with the upper cooking chamber 3; the number of the lower cooking chamber 4 is at least one.

[0101] In this 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 be set with different temperatures and times according to specific requirements.

[0102] The temperature, wind speed, cooking time and other parameters of each upper cooking chamber 3 can be controlled individually, which provides greater flexibility for cooking.

[0103] Specifically, the first fan assembly 6 is responsible for generating air flow and dissipating heat to the corresponding upper cooking chamber 3 through the first heat dissipation duct 7. In addition, in the present embodiment, each upper cooking chamber 3 has a corresponding first drive motor 61, a first fan blade 62, a second fan blade 322 and a first heating element 321, that is, the heating and heat dissipation 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.

[0104] The number of the lower cooking chamber 4 is at least one, and the operation of the lower cooking chamber is independent of that of the upper cooking chamber. The lower cooking chamber 4 performs heat transfer and air circulation through an independent heating device and air duct to ensure that its cooking effect and heating efficiency will not be affected by the upper cooking chamber 3. Different cooking operations can be performed in the lower cooking chamber 4.

[0105] Preferably, the number of the upper cooking chambers 3 in this embodiment is two, and the number of the lower cooking chamber 4 is one, and the volume of each of the upper cooking chambers 3 is smaller than the volume of the lower cooking chamber 4, that is, the volume of the first pot body assembly 31 is larger than the volume of the second pot body assembly 41, and multiple small-volume first pot body assemblies 31 can process small-volume food, while a single large-volume second pot body assembly 41 can process large-volume food.

[0106] Preferably, the large-volume second pot body assembly 41 of this embodiment can lower the center of gravity of the air fryer to prevent the air fryer from tipping over.

[0107] Taking the example that there are two upper cooking chambers 3 and one lower cooking chamber 4, in this embodiment, the two upper cooking chambers 3 have corresponding first fan assemblies 6 and first heat dissipation ducts 7, and the two first fan assemblies 6 are both located in the air suction duct 5, and can absorb the hot air in the air suction duct 5 and perform heat dissipation through the first heat dissipation duct 7.

[0108] Preferably, the number of upper cooking chambers 3 is designed to correspond to the number of lower cooking chambers 4, so that when the air fryer is to achieve multi-chamber operation, since multiple first fan assemblies 6 can work simultaneously, the flow of hot air in the suction channel 5 is accelerated, and then the heat is guided to the multiple first heat dissipation ducts 7 for discharge, which can effectively improve the heat dissipation efficiency of the entire device, especially when multiple cooking chambers work simultaneously, the heat is discharged more quickly.

[0109] When the device is working in multiple compartments, the coordinated work of the two fan assemblies 6 can quickly absorb the heat in the shell and quickly discharge it through the heat dissipation duct. This design can significantly reduce the problem of overheating of the device caused by heat accumulation during the cooking process.

[0110] Since each fan assembly is associated with a specific upper cooking chamber 3, the flow path of the hot air is clear and precise, effectively utilizing the natural tendency of hot air to rise, ensuring that the fan assembly 6 can quickly absorb hot air for heat dissipation and ensuring that the temperature of the outer surface of the shell 1 will not overheat.

[0111] Moreover, 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 duct 8. Such a design enables the hot air between the shell 1 and the chamber accommodating portion 2, that is, most of the airflow in the air intake channel 5, the third heat dissipation duct 8 and the fourth heat dissipation duct 9, to be discharged through multiple first heat dissipation ducts 7 under the action of the first fan assembly 6.

[0112] By centrally controlling the heat dissipation flow path and airflow, the overall heat management efficiency is improved, and the external surface of the device can maintain a low temperature when the device is working efficiently, avoiding overheating of the device or heat retention.

[0113] Specifically, the second drive 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 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 duct 8.

[0114] Furthermore, the third fan blade 422 does not participate in the air flow in the third heat dissipation duct 8, thereby preventing the lower cooking chamber 4 from affecting the air flow in the third heat dissipation duct 8, thereby preventing the air flow from being too complicated or the heat from being dispersed.

[0115] In this design, the hot air flow between the shell 1 and the bin housing 2 (i.e., the air flow through the suction channel 5, the third heat dissipation duct 8 and the fourth heat dissipation duct 9) is all centrally sucked in by the first fan assembly 6, and the hot air is discharged through multiple first heat dissipation ducts 7, thereby avoiding heat dispersion and ensuring high efficiency and precise control of the heat dissipation process.

[0116] All hot air flows, including the air from the air intake channel 5, the third heat dissipation duct 8 and the fourth heat dissipation duct 9, are sucked in by the first fan assembly 6 and discharged through multiple first heat dissipation ducts 7. In this way, the heat dissipation system of the entire device has a stronger collaborative working ability, ensuring that heat can be efficiently discharged from the device.

[0117] And because the first fan assembly 6 is located at the top of the warehouse accommodating portion 2, it absorbs the hot air inside the suction channel 5 and guides the hot air to the multiple first heat dissipation ducts 7 for discharge. This design ensures that the hot air is sucked from the top and can quickly discharge the heat from the equipment through the vertical airflow.

[0118] Since hot air always flows upward, installing the first fan assembly 6 at the top can make full use of the natural upward trend of hot air, allowing the hot air to flow more smoothly into the fan, and can more effectively attract the rising hot air without creating additional air flow resistance inside the equipment, thereby improving the heat dissipation efficiency.

[0119] After the hot air rises to the top fan, it is quickly discharged from the device through the exhaust duct, avoiding temperature accumulation or uneven heat dissipation in the device, and ensuring that the temperature of the outer surface of the shell 1 will not be overheated.

[0120] Preferably, in the present embodiment, the volume of the second air outlet portion 431 is smaller than the volume of the first air outlet portion 71. 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 of the first air outlet portion 71. This ensures the heat dissipation efficiency of the first heat dissipation duct 7. Moreover, the second air outlet portion 431 serves as an auxiliary heat dissipation structure, which only assists the lower cooking chamber 4 in discharging excess heat and assists the third heat dissipation duct 8 to ensure that the heat at the top of the lower cooking chamber 4 is not too high. Therefore, the volume of the second air outlet portion 431 is relatively small to avoid discharging excessive heat, resulting in insufficient heat inside the lower cooking chamber 4 and improper food processing.

[0121] Preferably, the second heating device 42 also includes a third heating element 424 disposed at the bottom of the lower cooking chamber 4. Such a design is adopted to ensure the temperature in the lower cooking chamber 4 and ensure that the food in the second pot body assembly 41 can be evenly heated.

[0122] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An air fryer, characterized in that: The invention comprises a shell (1), wherein a chamber accommodating portion (2) is arranged in the shell (1), and an upper cooking chamber (3) and a lower cooking chamber (4) are arranged in the chamber accommodating portion (2) from top to bottom, wherein at least two upper cooking chambers (3) are arranged, and at least one lower cooking chamber (4) is arranged, the number of the upper cooking chambers (3) is greater than the number of the lower cooking chambers (4), and the plurality of upper cooking chambers (3) are independent of each other; each upper cooking chamber (3) is arranged with a corresponding first pot body assembly (31), and each lower cooking chamber (4) is arranged with a corresponding second pot body assembly (41); and the chamber accommodating portion (2) is also arranged with a first heating device (32) corresponding to the upper cooking chamber (3) and a second heating device (42) corresponding to the lower cooking chamber (4).

2. An air fryer according to claim 1, characterized in that: The air fryer further comprises a heat insulation structure, which comprises an air suction channel (5), a first fan assembly (6) and a first heat dissipation duct (7), wherein the air suction channel (5) is covered on the outside of the bin accommodating portion (2), the first heat dissipation duct (7) is located above the bin accommodating portion (2) and communicates with the air suction channel (5), the first fan assembly (6) is arranged in the first heat dissipation duct (7) and can absorb air through the air suction channel (5), and the first heat dissipation duct (7) can guide the airflow blown out by the first fan assembly (6) to be discharged 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 suction channel (5) comprises 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 shell body (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 bin accommodating portion (2), and each of the lateral air ducts (52) is communicated with the first heat dissipation air duct (7); the shell body (1) is also provided with a first air inlet communicated with the corresponding lateral air duct (52).

4. An air fryer according to claim 2, characterized in that: The first fan assembly (6) comprises a first drive motor (61) and a first fan blade (62) arranged on the output end thereof, and the first heat dissipation duct (7) is also provided with a first air outlet (71) communicated with the outside world. The first drive 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 duct (7) and be discharged to the outside world from the first air outlet (71).

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

6. An air fryer according to claim 4, characterized in that: The first heating device (32) comprises a first heating element (321) arranged 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 penetrate into the upper cooking chamber (3) to be transmission-connected with the second fan blade (322). The first fan blade (62) is located above the second fan blade (322). Driven by the first drive motor (61), the second fan blade (322) can promote the flow of hot air in the upper cooking chamber (3) to achieve heat circulation in the upper cooking chamber (3).

7. An air fryer according to claim 2, characterized in that: The heat-insulating structure further comprises a third heat-dissipating air duct (8) located between the upper cooking chamber (3) and the lower cooking chamber (4); a first through hole (21) is provided on the side wall of the chamber accommodating portion (2); the first through hole (21) enables the third heat-dissipating air duct (8) to communicate with the air suction channel (5).

8. An air fryer according to claim 7, characterized in that: The heat insulation structure further comprises a fourth heat dissipation air duct (9) arranged between the back side of the shell (1) and the chamber accommodating portion (2), the fourth heat dissipation air duct (9) being arranged corresponding to the upper cooking chamber (3), and the fourth heat dissipation air duct (9) being communicated with the air suction channel (5) and the third heat dissipation air duct (8) respectively.

9. The air fryer according to claim 7, characterized in that: The second heating device (42) comprises a second driving 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 driving motor (421) penetrates into the lower cooking chamber (4) and is transmission-connected to the third fan blade (422); the third fan blade (422), driven by the second driving motor (421), can promote the flow of hot air in the lower cooking chamber (4) to achieve heat circulation in the lower cooking chamber (4).

10. The air fryer according to claim 7, characterized in that: The top of the lower cooking chamber (4) is provided with an upwardly protruding assembly groove (43), the third fan blade (422) is located in the assembly groove (43), the second drive motor (421) is arranged on the outside of the top of the assembly groove (43), the output end of the second drive motor (421) penetrates into the assembly groove (43) and is transmission-connected with the third fan blade (422), and the outside of the assembly groove (43) is provided with a second air outlet (431) communicated with the outside, and when the second drive motor (421) is able to drive the second fan blade (322) to rotate, the hot air in the lower cooking chamber (4) can be discharged to the outside through the second air outlet (431).

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