Air duct structure of air fryer and air fryer

Abstract

The utility model relates to the technical field of household appliances, in particular to an air duct structure of an air fryer and the air fryer, and the air duct structure is characterized in that during operation of the air duct structure, a first fan assembly starts to work, air is sucked in through an air suction channel, and hot air in a shell is brought into a first heat dissipation air duct; airflow blown out by the first fan assembly can discharge hot air to the outside through the first heat dissipation air channel, so that heat between the shell and the bin containing part is taken away, the air is continuously extracted and discharged, it is ensured that the heat can be effectively dissipated, the temperature of the outer surface of the shell is prevented from being too high, and through the combination of the air suction channel and the first heat dissipation air channel, the heat dissipation efficiency is improved. And through work of the fan assembly, heat between the shell and the bin containing part can be rapidly discharged, the temperature of the outer surface of the shell is effectively reduced, the temperature of the outer surface of the shell is greatly reduced, and the scalding risk is remarkably reduced. Especially in a family use environment, children, old people and other groups prone to being injured can use the multi-bin air fryer more safely.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, and in particular to an air duct structure for an air fryer and an air fryer. Background Technology

[0002] With the popularization of healthy eating concepts, air fryers, as a kitchen appliance that uses the principle of hot air circulation to achieve the "frying" effect of food, have been favored by consumers for their low-oil and low-fat cooking methods. Air fryers use the rapid flow of high-temperature air to imitate the traditional frying method, so that the surface of food forms a crispy crust while the inside remains tender. This avoids the use of a lot of oil while still maintaining a delicious taste. Due to its efficient cooking method and healthy eating concept, air fryers have become one of the common household appliances in family kitchens.

[0003] In traditional air fryer designs, to reduce the rise in outer wall temperature, an insulating material layer is often placed between the outer shell and the inner pot. This material has good heat insulation properties and can slow down the transfer of heat from the inner pot to the outside, thereby reducing the outer wall temperature.

[0004] The inner walls of air fryers are often coated with heat-reflecting materials, such as aluminum alloy coatings or other reflective coatings. This design is intended to reflect heat back into the fryer, thereby improving thermal efficiency and reducing heat loss.

[0005] Although traditional air fryers use insulation materials and reflective coatings to reduce heat leakage, if the insulation material is not thick enough or has good thermal conductivity, heat can still easily escape through the outer shell, causing the outer wall temperature to rise rapidly.

[0006] Furthermore, traditional sandwich structures may not be fully optimized. The heat dissipation system of air fryers often relies on the design of the outer shell material and ventilation holes. The heat conduction path between the outer shell and the inner liner may be too short or uneven, resulting in heat concentration in some areas, making it difficult to completely and effectively dissipate heat quickly. This is especially true for multi-compartment air fryers. Due to the large number of compartments, the temperature of the outer wall of the air fryer will gradually rise during long-term high-temperature operation. This not only affects the comfort of using the air fryer but may also pose a safety hazard. In particular, in a home environment, children and the elderly may not be sufficiently alert and may accidentally touch the hot outer wall, which could lead to burns.

[0007] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0008] Regarding the existing multi-compartment air fryers mentioned above, due to the large number of compartments, the temperature of the outer wall of the air fryer will gradually rise during long-term high-temperature operation. This not only affects the comfort of using the air fryer, but may also pose a safety hazard, especially in a home environment, where children and the elderly may not be sufficiently alert and may accidentally touch the hot outer wall, which could lead to burns.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] An air duct structure for an air fryer includes a shell, and a chamber receiving part is provided inside the shell. An upper cooking chamber and a lower cooking chamber are arranged sequentially from top to bottom in the chamber receiving part.

[0011] The air duct structure also includes a heat insulation structure, which includes an air intake channel, a first fan assembly, and a first heat dissipation duct. The air intake channel covers the outside of the housing portion. The first heat dissipation duct is located above the housing portion and communicates with the air intake channel. The first fan assembly is located in the first heat dissipation duct and can draw air through the air intake channel. The first heat dissipation duct can guide the airflow blown out by the first fan assembly to the outside.

[0012] The air duct structure of an air fryer as described above includes a second heat dissipation duct and two lateral air ducts located on both sides thereof. The second heat dissipation duct is located between the shell and the first heat dissipation duct, and the second heat dissipation duct communicates with the first heat dissipation duct. The two lateral air ducts are located on both sides of the housing, and each lateral air duct communicates with the first heat dissipation duct. The shell is also provided with a first air inlet communicating with the corresponding lateral air duct.

[0013] As described above, the air duct structure of an air fryer includes a first fan assembly comprising a first drive motor and a first fan blade disposed at its output end. The first heat dissipation duct also has a first air outlet communicating with the outside. The first drive motor can drive the first fan blade to rotate, causing air in the suction channel to flow into the first heat dissipation duct and be discharged to the outside from the first air outlet.

[0014] As described above, the air duct structure of an air fryer includes a first heat dissipation duct comprising a volute section, an air outlet section, and a volute tongue. The volute tongue is located at the connection between the volute section and the air outlet section. The first air outlet is connected to the air outlet end of the air outlet section, and the first fan blade is eccentrically located within the volute section.

[0015] The air duct structure of an air fryer as described above includes a first air outlet area and a second air outlet area. The first air outlet area is located between the volute section and the second air outlet area, and the inner diameter of the first air outlet area gradually increases along the volute section towards the second air outlet area.

[0016] In the air duct structure of an air fryer as described above, the second air outlet area is located between the first air outlet area and the first air outlet section, and the inner diameter of the second air outlet area gradually decreases along the direction from the first air outlet area to the first air outlet section.

[0017] The air duct structure of an air fryer as described above further includes a third heat dissipation air duct located between the upper cooking chamber and the lower cooking chamber, the third heat dissipation air duct being connected to the air intake channel.

[0018] The air duct structure of an air fryer as described above further includes a fourth heat dissipation air duct located between the back of the shell and the housing portion. The fourth heat dissipation air duct is correspondingly arranged with the upper cooking chamber and is connected to the air intake channel and the third heat dissipation air duct.

[0019] In the air duct structure of an air fryer as described above, the number of upper cooking chambers is greater than the number of lower cooking chambers, and the multiple upper cooking chambers are independent of each other. The first fan assembly and the first heat dissipation duct are arranged in a one-to-one correspondence, and the first heat dissipation duct is arranged in a one-to-one correspondence with the upper cooking chamber.

[0020] An air fryer includes a first pot body assembly, a second pot body assembly, and an air duct structure as described in any of the above-mentioned air fryer components. The first pot body assembly corresponds one-to-one with the upper cooking chamber, and the second pot body assembly corresponds one-to-one with the lower cooking chamber. The chamber housing is further provided with a first heating device corresponding to the upper cooking chamber and a second heating device corresponding to the lower cooking chamber.

[0021] The beneficial effects of this utility model are:

[0022] This embodiment describes an air duct structure for an air fryer and the air fryer itself, relating to the technical field of household appliances. During operation, the first fan assembly activates, drawing in air through the suction channel. This draws in hot air from between the shell and the compartment housing into the first heat dissipation duct. The airflow from the first fan assembly then dissipates the hot air through the first heat dissipation duct, expelling it to the outside. This process removes heat from between the shell and the compartment housing. The continuous extraction and expulsion of air ensures effective heat dissipation, preventing excessively high temperatures on the outer surface of the shell. The combination of the suction channel and the first heat dissipation duct, along with the operation of the fan assembly, rapidly removes heat from the shell, effectively reducing the temperature of the outer surface and significantly lowering the risk of burns. This is especially beneficial in home environments, making multi-compartment air fryers safer for vulnerable groups such as children and the elderly.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is one of the structural schematic diagrams of the air fryer of this utility model;

[0025] Figure 2 This is the second structural schematic diagram of the air fryer of this utility model;

[0026] Figure 3 This is one of the exploded view diagrams of the air fryer of this utility model;

[0027] Figure 4 This is the second exploded view of the air fryer of this utility model;

[0028] Figure 5 This is a bottom view of the first heat dissipation duct hidden bottom shell of this utility model;

[0029] Figure 6 This is a top view of the air fryer of this utility model;

[0030] Figure 7 for Figure 6 Cross-sectional view and enlarged view along line AA;

[0031] Figure 8 for Figure 6 Cross-sectional view along line BB;

[0032] Figure 9 for Figure 6 Cross-sectional view along line CC;

[0033] Figure 10 This is one of the structural schematic diagrams of the hidden pot body assembly of the air fryer of this utility model;

[0034] Figure 11 This is the second structural schematic diagram of the hidden pot assembly of the air fryer of this utility model. Detailed Implementation

[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] like Figures 1 to 11 As shown, the air duct structure of an air fryer in this embodiment includes a shell 1, a chamber housing 2 is provided inside the shell 1, and an upper cooking chamber 3 and a lower cooking chamber 4 are arranged sequentially from top to bottom inside the chamber housing 2.

[0037] The air duct structure also includes a heat insulation structure, which includes an air intake channel 5, a first fan assembly 6, and a first heat dissipation air duct 7. The air intake channel 5 covers the outside of the housing accommodating part 2. The first heat dissipation air duct 7 is located above the housing accommodating part 2 and communicates with the air intake channel 5. The first fan assembly 6 is located in the first heat dissipation air duct 7 and can draw air through the air intake channel 5. The first heat dissipation air duct 7 can guide the airflow blown out by the first fan assembly 6 to the outside.

[0038] Specifically, when the air fryer is running, the first fan assembly 6 starts working, drawing in air through the suction channel 5 and bringing the hot air between the shell and the compartment into the first heat dissipation duct 7. The airflow blown out by the first fan assembly 6 can also expel the hot air to the outside through the first heat dissipation duct 7, thereby removing the heat between the shell and the compartment. The air is continuously drawn in and expelled to ensure that the heat can be effectively dissipated and to prevent the outer surface temperature of the shell 1 from becoming 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 inside the shell 1 can be quickly expelled, 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, significantly reducing the risk of burns. Especially in the home environment, children and the elderly and other vulnerable groups can use the multi-compartment air fryer more safely, and it can also prevent damage to internal components due to overheating inside the shell 1.

[0039] Preferably, since the air intake channel 5 is located between the shell 1 and the compartment 2, forming a heat insulation layer, and utilizes the flowing air to drive the hot air overflowing from the compartment 2 to be discharged through the synergistic action of the first fan assembly 6 and the first heat dissipation duct 7, this not only prevents the hot air generated in the compartment 2 from being directly transferred to the outer shell, avoiding high temperatures on the outer surface of the air fryer, but also ensures that the surface temperature of the equipment is relatively low, thus improving user safety.

[0040] Through the airflow of the suction channel 5, the hot air overflowing from the housing 2 is quickly carried to the first fan assembly 6, and then discharged to the outside through the first heat dissipation duct 7. This multi-layered heat dissipation path ensures that heat can be discharged efficiently, avoiding heat accumulation and overheating. The efficient airflow generated by the first fan assembly 6 helps to carry the hot air away from the housing 2 and quickly discharge it through the duct system, improving the working efficiency of the entire heat dissipation system.

[0041] The combined effect of the insulation layer and the flow of air effectively controls the temperature of the air fryer's outer shell, preventing excessively high temperatures from affecting safety. Especially in home environments, it avoids the risk of burns caused by excessively high surface temperatures of the equipment, ensuring user safety.

[0042] The air intake channel removes hot air from the chamber 2 by flowing air, accelerating heat dissipation and optimizing heat management. With this design, hot air does not remain inside the device but flows smoothly to the outside through the air duct system, effectively improving the heat dissipation performance of the air fryer. This 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, preventing damage to internal components due to overheating.

[0043] like Figures 1 to 11 As shown, the air intake channel 5 in this embodiment includes a second heat dissipation channel 51 and two side air channels 52 disposed on both sides thereon. The second heat dissipation channel 51 is located between the housing 1 and the first heat dissipation channel 7, and the second heat dissipation channel 51 is connected to the first heat dissipation channel 7. The two side air channels 52 are located on both sides of the housing accommodating part 2, and each side air channel 52 is connected to the first heat dissipation channel 7. The housing 1 is also provided with a first air inlet that is connected to the corresponding side air channel 52.

[0044] Specifically, the airflow generated by the fan assembly 6 first carries the external cold air, which is then guided into the side air duct 52 through the first air inlet. With the help of the airflow from the fan assembly, the hot air in the side air duct 52 is carried to the second heat dissipation air duct 51. The hot air is then guided through the side air duct 52 to the second heat dissipation air duct 51, and then drawn into the first heat dissipation air duct 7 through the fan assembly 6 and discharged, thus completing the heat dissipation.

[0045] Specifically, through the design of the lateral air duct and the second heat dissipation air duct, the hot air inside 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). The hot air inside the air fryer can be effectively guided and discharged through multiple paths. This multi-stage 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 heat dissipation efficiency. This design accelerates the flow of hot air, ensuring that the outer shell will not overheat. The multi-stage design of the air duct can form a more effective air flow channel, optimize heat dissipation, and further improve the heat dissipation effect.

[0046] Through the suction effect of the first fan component 6 and the multi-channel design, heat is quickly discharged to the outside, avoiding excessively high temperature of the air fryer shell. This reduces the risk of burns, especially when used at home, greatly improving the safety of children and the elderly when using the air fryer.

[0047] By adding lateral air ducts, airflow becomes more flexible, enabling hot air to be guided more efficiently from the sides of the shell 1 and the compartment 2 to the central heat dissipation path. This design makes the airflow more uniform and efficient. The design of the first air inlet ensures that external air can smoothly enter the lateral air ducts. Combined with the suction effect of the fan assembly, air circulation is enhanced, further accelerating heat dissipation.

[0048] Furthermore, the first heat dissipation duct 7 is located between the housing 2 and the second heat dissipation duct 51. That is, the first heat dissipation duct 7 is located at the top of the housing 2 and at a relatively high position on the shell 1. By utilizing the natural tendency of hot air to rise, the hot air can be quickly discharged to the top of the shell 1 when it is discharged, preventing the hot air from re-entering the suction channel 5 through the first air inlet for heat circulation. This ensures that the suction channel 5 draws in cold air for heat dissipation, thus ensuring the heat dissipation effect of the air fryer.

[0049] like Figures 1 to 11 As shown, the first fan assembly 6 in this embodiment 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 air intake channel 5 to flow into the first heat dissipation duct 7 and be discharged to the outside from the first air outlet 71.

[0050] The first drive motor 61 is located in the air intake channel 5, the first fan blade 62 is located in the first heat dissipation air duct 7, and the output end of the first drive motor 61 passes through the first heat dissipation air duct 7 and is connected to the first fan blade 62 for transmission.

[0051] When the air fryer starts working, the first drive motor 61 starts, driving the first fan blade 62 to rotate. As the first fan blade rotates, hot air in the suction channel 5 is drawn in and guided into the first heat dissipation duct 7. The airflow through the first heat dissipation duct 7 is pushed and finally discharged outside the air fryer through the first air outlet 71. In this process, the rotation of the first fan blade helps to accelerate the airflow 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 heat accumulation. This design ensures that heat will not remain inside the air fryer, reduces the outer shell temperature, and optimizes the heat dissipation path.

[0052] Specifically, the first drive motor 61 and the first fan blade 62 are designed to be connected by passing through the heat dissipation duct at the output end, which makes the structure more compact, simplifies the complexity, and improves 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, thus ensuring the compact design of the air fryer.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] By setting the center of the first blade 62 and the center of the volute section 72 eccentrically, the relative position of the first blade 62 and the volute section 72 is changed, and the air outlet angle of the first blade 62 is changed accordingly. This changes the flow field of the volute tongue 74 and reduces the high-pressure area of ​​the volute tongue 74, thereby reducing the impact of the airflow on the volute tongue 74 and reducing the airflow loss in the first heat dissipation duct 7, thus increasing the air volume.

[0061] Furthermore, during the rotation of the first blade 62, more airflow is thrown out from the first blade 62 inside the volute section 72 and directly enters the air outlet section 73, which reduces the airflow that impacts the volute tongue 74, reduces the high-pressure area of ​​the volute tongue 74, and improves the smoothness of airflow in the duct, thereby increasing the air volume.

[0062] The eccentric design makes the airflow in the duct more stable, with less backflow or turbulence, increasing the smoothness of the airflow in the duct. This makes the equipment more efficient when working and avoids energy loss caused by uneven airflow.

[0063] Preferably, in this embodiment, the first drive motor 61 is located outside the volute section 72 and inside the air intake channel 5. Preferably, in this embodiment, the first drive motor 61 is located inside the second heat dissipation duct 51. This design provides the first drive motor 61 with sufficient heat dissipation space, and the airflow can also help dissipate heat from the first drive motor 61. Furthermore, it helps 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 within the first heat dissipation duct 7, and ensuring normal heat dissipation.

[0064] Preferably, the air outlet section 73 of this 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 increases along the direction from the volute section 72 to the second air outlet area 732.

[0065] The purpose of this design is to provide a smooth airflow transition between the volute section 72 and the second air outlet zone 732. As the inner diameter increases, the airflow speed gradually decreases and the pressure is gradually released, thereby reducing airflow turbulence and noise and optimizing the flow stability of the airflow.

[0066] Specifically, the airflow in the volute section 72 may be high-speed and high-pressure. Suddenly entering a large outlet area can cause airflow instability and pressure loss. Through the gradually enlarging inner diameter design, the airflow can be smoothly extended to the second outlet area 732, avoiding impact-type pressure changes, thereby improving the overall efficiency of the air duct.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 the third heat dissipation duct 8 is connected to the air intake channel 5.

[0073] Preferably, the side wall of the hopper accommodating part 2 is provided with a first through hole 21, which allows the third heat dissipation air duct 8 to communicate with the air intake duct 5.

[0074] Preferably, the first fan assembly 6 draws in external air through the air intake channel 5, drives airflow, and guides the drawn-in air to the first heat dissipation channel 7 for heat dissipation.

[0075] Meanwhile, due to the design of the first through hole 21, when the first fan assembly 6 is working, it not only draws air from the suction channel 5 into the first heat dissipation duct 7, but also introduces air from the third heat dissipation duct 8 into the suction channel 5 through the first through hole 21. This allows the hot air in the third heat dissipation duct 8 to also be drawn into the suction channel 5, further removing heat between the two cooking chambers and effectively dissipating heat between them.

[0076] Furthermore, the upper cooking chamber 3 and the lower cooking chamber 4 will generate different temperatures during use. Especially under heavy workload, the heat between these two chambers is relatively concentrated. The design of the third heat dissipation duct 8 allows this heat to be effectively carried away by airflow, avoiding excessive heat accumulation and further improving heat dissipation efficiency.

[0077] By connecting the third heat dissipation duct 8 with the air intake duct 5, air can flow through the area between the upper cooking chamber 3 and the lower cooking chamber 4, carrying away excess heat and reducing the temperature difference between the chambers. This not only ensures a balanced temperature distribution inside the equipment but also improves heat dissipation efficiency and avoids local overheating.

[0078] Preferably, the third heat dissipation duct 8 can provide 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, so as to ensure that the heat between the two will not affect each other too much.

[0079] like Figures 1 to 11 As shown, the heat insulation structure of this embodiment also includes a fourth heat dissipation duct 9 disposed between the back of the shell 1 and the compartment accommodating part 2. The fourth heat dissipation duct 9 is disposed corresponding to the upper cooking compartment 3, and the fourth heat dissipation duct 9 is connected to the air intake channel 5 and the third heat dissipation duct 8 respectively.

[0080] In this embodiment, the two sides of the fourth heat dissipation duct 9 are respectively connected to the air intake duct 5, and the bottom of the fourth heat dissipation duct 9 is connected to the top of the third heat dissipation duct 8.

[0081] Preferably, the two sides of the fourth heat dissipation duct 9 are connected to the air intake duct 5, so that the air in the air intake duct 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 air intake duct 5 for heat dissipation, further removing the heat from the back of the device.

[0082] Meanwhile, the bottom of the fourth heat dissipation duct 9 is connected to 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 airflow, not only drawing 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 expelling this hot air through the first heat dissipation duct 7, achieving the effect of comprehensive heat dissipation.

[0083] Specifically, the first fan assembly 6 draws in external air through the air intake channel 5 and pushes the airflow to multiple heat dissipation ducts, including the first heat dissipation duct 7, the third heat dissipation duct 8, and the fourth heat dissipation duct 9.

[0084] Throughout the process, the airflow of the fourth heat dissipation duct 9 helps to remove the heat between the back of the shell 1 and the compartment 2. At the same time, the airflow of the third heat dissipation duct 8 further removes the heat between the upper cooking compartment 3 and the lower cooking compartment 4. Moreover, the airflow of the fourth heat dissipation duct 9 and the third heat dissipation duct 8 will carry this heat into the suction duct 5, and then discharge it uniformly through the first heat dissipation duct 7.

[0085] Preferably, the fourth heat dissipation duct 9 is located between the back of the housing 1 and the compartment accommodating part 2, which serves to provide additional heat dissipation space for the back of the device and help to effectively disperse the heat on the back of the air fryer.

[0086] Specifically, the connection between the fourth heat dissipation duct 9 and the third heat dissipation duct 8 allows heat to flow through multiple channels simultaneously, increasing the heat dissipation area and the number of channels, effectively improving heat dissipation efficiency. In particular, the design of the fourth heat dissipation duct 9 allows heat on the back of the device to be effectively dissipated, avoiding heat accumulation.

[0087] When the first fan assembly 6 drives the airflow, it can achieve a coordinated airflow effect on multiple heat dissipation areas, thereby improving the overall heat dissipation capacity. This not only ensures that the equipment will not overheat when operating under high load, but also ensures that the equipment can work stably for a long time.

[0088] The heat dissipation space at the back of the device is provided by the fourth heat dissipation duct 9. Through its connection with the air intake duct 5, hot air from the back of the device can be carried away, which can effectively prevent local overheating caused by excessive heat accumulation in a certain part of the device.

[0089] The design of the third heat dissipation duct 8 and the fourth heat dissipation duct 9 effectively avoids uneven heat distribution between the upper cooking chamber 3 and the lower cooking chamber 4, ensuring uniform temperature distribution and thus improving the cooking effect of food.

[0090] Furthermore, through this multi-layered heat dissipation design, the fourth heat dissipation duct 9 can prevent the equipment from being damaged by overheating, thus extending the service life of the equipment. The coordinated work of the first fan assembly 6 can ensure that the equipment maintains a suitable working temperature throughout the entire operation process, avoiding the risk of equipment failure due to poor heat dissipation in high-temperature environments.

[0091] Optimizing the cooling system not only improves the safety of the equipment, but also reduces maintenance and malfunctions caused by overheating, thereby reducing the maintenance cost of the equipment.

[0092] The design of the fourth heat dissipation duct 9 makes effective use of the space between the shell 1 and the compartment 2, avoiding extra space waste. Through this reasonable space planning, the internal structure of the equipment can be compactly optimized. At the same time, the heat dissipation space at the back also increases the heat dissipation surface, which helps to improve the overall heat dissipation efficiency.

[0093] like Figures 1 to 11 As shown, an air fryer according to this embodiment includes a first pot body assembly 31, a second pot body assembly 41, and an air duct structure as described in any of the above. The first pot body assembly 31 corresponds one-to-one with the upper cooking chamber 3, and the second pot body assembly 41 corresponds one-to-one with the lower cooking chamber 4. The chamber housing 2 is also provided 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.

[0094] Preferably, the air fryer of this application has a two-layer design for the cooking chamber, with each chamber equipped with a corresponding pot body component. This allows the air fryer to process multiple food categories simultaneously, improving its cooking efficiency. Each cooking chamber has an independent heating element, which allows for more precise adjustment of the cooking temperature for different foods, ensuring that hot air is evenly distributed within each chamber, improving thermal efficiency, and thus achieving efficient and uniform cooking.

[0095] Specifically, when the multi-compartment air fryer is running, the first fan assembly 6 starts working, drawing in air through the suction channel 5 and bringing the hot air inside the shell 1 into the first heat dissipation duct 7. The airflow blown out by the first fan assembly 6 can also expel the hot air to the outside through the first heat dissipation duct 7, thereby removing the heat inside the shell 1. The air is continuously drawn in and expelled to ensure that the heat can be effectively dissipated and to prevent the outer surface temperature of the shell 1 from becoming 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 inside the shell 1 can be quickly expelled, 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, significantly reducing the risk of burns. Especially in the home environment, children and the elderly and other vulnerable groups can use the multi-compartment air fryer more safely. In addition, it can also prevent damage to internal components due to overheating inside the shell 1.

[0096] 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.

[0097] Specifically, the first drive motor 61 achieves different functions by simultaneously driving the first fan blade 62 and the second fan blade 322. The function of the first fan blade 62 is to draw in external air through the air intake channel 5 and push the air through the first heat dissipation channel 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 heating the air and forming a hot air circulation to ensure that the temperature of the upper cooking chamber 3 is evenly distributed.

[0098] When the first heating element 321 starts heating, the second fan blade 322 distributes the heat evenly in the upper cooking chamber 3 through airflow, thereby realizing hot air circulation, while the first fan blade 62 draws in air through the air intake channel 5 and dissipates heat through the first heat dissipation duct 7.

[0099] Specifically, by coordinating the heating and cooling functions through the same drive motor, interference between separate cooling and heating drive motors is avoided, resulting in a more compact and simpler equipment structure and more efficient operation.

[0100] This design reduces the need for additional motors and fans, lowers the energy consumption of the equipment, and improves the overall operating efficiency of the equipment.

[0101] Furthermore, the second blade 322 drives the airflow in the upper cooking chamber 3, forming a hot air circulation to ensure a uniform temperature distribution within the upper cooking chamber. Meanwhile, the first blade 62 effectively dissipates heat to maintain a stable temperature inside the motor and air fryer, avoiding temperature fluctuations caused by overheating. This synergistic design helps maintain the accuracy of the system's internal temperature control, making the cooking process more stable and achieving ideal heating results. It also prevents the outer wall of the air fryer from becoming too hot.

[0102] Furthermore, the first drive motor 61 drives two fan blades simultaneously, avoiding the need for additional drive motors and fans, thereby reducing overall power consumption and achieving energy saving. At the same time, due to the reduction in the number of additional fans, the noise level during equipment operation is also reduced, improving the user experience. The efficient heat dissipation and heating work together, enabling the system to complete the heat dissipation and heating tasks in a shorter time, thereby improving overall energy efficiency.

[0103] like Figures 1 to 11 As shown, the second heating device 42 in this embodiment 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. 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.

[0104] As the third blade 422 continuously drives the airflow in the lower cooking chamber 4, the air and heat in the lower cooking chamber 4 form an effective circulation path. This not only accelerates the heat transfer and ensures that the food is heated evenly, but also improves thermal efficiency, so that every area in the lower cooking chamber is fully heated.

[0105] like Figures 1 to 11 As shown, the lower cooking chamber 4 in this embodiment 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 can cause the hot air in the lower cooking chamber 4 to be discharged to the outside through the second air outlet 431.

[0106] Specifically, when the second drive motor 421 is working, it drives the third fan blade 422 to rotate. The rotating third fan blade 422 pushes the hot air in the lower cooking chamber 4 to flow, forming an effective air circulation system. The hot air circulation is transmitted to various areas of the lower cooking chamber through the air flow path in the assembly slot 43, and finally discharged to the outside through the second air outlet 431 on the outside of the assembly slot 43. The design of the second air outlet 431 enables the hot air in the lower cooking chamber 4 to be effectively discharged, avoiding the accumulation of heat in the lower cooking chamber 4.

[0107] Specifically, the second air outlet 431 is connected to the outside, ensuring that excess hot air pushed by the third fan blade 422 can be quickly discharged from the lower cooking chamber 4, reducing the excessive local temperature in the lower cooking chamber 4 and maintaining a stable internal temperature of the air fryer.

[0108] Furthermore, hot air is exhausted to the outside through the second air outlet 431, which helps to reduce the internal temperature of the equipment and improve the overall heat dissipation effect.

[0109] Furthermore, the second air outlet 431 allows excess hot air in the lower cooking chamber 4 to be quickly expelled, preventing heat buildup and thus further improving the air fryer's heat dissipation efficiency.

[0110] Furthermore, the rotation of the third fan blade 422 promotes the uniform distribution of hot air in the lower cooking chamber 4 by forcing airflow. The air circulation not only allows the heat released by the second heating element 423 to be more efficiently transferred to each food surface, but also ensures that the temperature of each area remains consistent. It also avoids the problem of some parts of the lower cooking chamber 4 being too hot or too cold, thus making the cooking process more uniform and improving the cooking effect of the food.

[0111] Moreover, in this embodiment, the combined 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 getting too high, thus ensuring the normal operation of the second drive motor 421.

[0112] Preferably, the second heating element 423 is located inside the assembly slot 43 and below the third fan blade 422. This design makes the structure of the lower cooking chamber 4 more compact and facilitates the miniaturization of the air fryer.

[0113] like Figures 1 to 11 As shown, in this embodiment, the number of upper cooking chambers 3 is greater than the number of lower cooking chambers 4. The multiple upper cooking chambers 3 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. The first heat dissipation duct 7 is arranged in a one-to-one correspondence with the upper cooking chamber 3.

[0114] like Figures 1 to 11As shown, in this embodiment, the number of upper cooking chambers 3 is greater than the number of lower cooking chambers 4. The multiple upper cooking chambers 3 are independent of each other. Preferably, in this embodiment, the number of upper cooking chambers 3 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 chambers 3. The number of lower cooking chambers 4 is at least one.

[0115] In this embodiment, there are at least two upper cooking chambers 3, and they are independent of each other. This means that users can cook different foods at the same time according to their needs, and each cooking chamber can be set with different temperatures and times according to specific requirements.

[0116] The temperature, airflow, cooking time, and other parameters of each upper cooking chamber 3 can be controlled independently, which provides greater flexibility in cooking.

[0117] Specifically, the first fan assembly 6 is responsible for generating airflow and dissipating heat to the corresponding upper cooking chamber 3 through the first heat dissipation duct 7. In this embodiment, each upper cooking chamber 3 has a corresponding first drive motor 61, first fan blade 62, second fan blade 322 and 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 airflow can be adjusted according to the requirements of each cooking chamber.

[0118] There is at least one lower cooking chamber 4, and the operation of the lower cooking chamber is independent of that of the upper cooking chamber. The lower cooking chamber 4 transfers heat and circulates air through an independent heating device and air duct, ensuring that its cooking effect and heating efficiency are not affected by the upper cooking chamber 3. Different cooking operations can be performed in the lower cooking chamber 4.

[0119] The design of multiple upper cooking chambers 3 allows users to cook multiple foods simultaneously. Each cooking chamber can independently set parameters such as temperature and time, and can cook different kinds of food at the same time, such as fried chicken and French fries, without interfering with each other.

[0120] The lower cooking compartment 4 provides additional cooking space, which can be used to handle larger volumes of food, offering more cooking options.

[0121] Preferably, multiple independent upper cooking chambers 3 and lower cooking chambers 4 can operate simultaneously, separately, or in combination. Different foods can be cooked in parallel in different chambers, reducing the waiting time for food cooking and greatly improving cooking efficiency.

[0122] The design of multiple independent upper cooking chambers 3 effectively utilizes the internal space of the equipment, allowing users to perform more cooking functions within the limited space and improving the overall efficiency of the equipment.

[0123] This design not only makes the equipment more compact, but also reduces internal temperature fluctuations and provides a more stable cooking experience because each upper cooking chamber operates independently.

[0124] Preferably, in this embodiment, there are two upper cooking chambers 3 and one lower cooking chamber 4. 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 assembly 31 is larger than the volume of the second pot assembly 41. Multiple small-volume first pot assemblies 31 can handle small-volume food, while a single large-volume second pot assembly 41 can handle large-volume food.

[0125] Preferably, the large-volume second pot assembly 41 in this embodiment can lower the center of gravity of the air fryer, preventing the air fryer from tipping over.

[0126] Taking the example of two upper cooking chambers 3 and one lower cooking chamber 4, in this embodiment, both upper cooking chambers 3 have corresponding first fan components 6 and first heat dissipation ducts 7. Both first fan components 6 are located in the air intake channel 5 and can absorb the hot air in the air intake channel 5 and perform heat dissipation through the first heat dissipation duct 7.

[0127] Preferably, the design of the number of upper cooking chambers 3 relative to the number of lower cooking chambers 4 allows the air fryer to operate with multiple chambers simultaneously. This accelerates the flow of hot air in the suction channel 5, and the heat is then guided to multiple first heat dissipation channels 7 for discharge. This effectively improves the heat dissipation efficiency of the entire device, especially when multiple cooking chambers are operating simultaneously, the heat is discharged more rapidly.

[0128] When the equipment is operating in multiple compartments, the coordinated operation of the two fan components 6 can quickly absorb heat from the casing and quickly discharge it through the heat dissipation duct. This design can significantly reduce the problem of equipment overheating caused by heat accumulation during cooking.

[0129] Since each fan assembly is associated with a specific upper cooking chamber 3, the flow path of hot air is clear and precise, effectively utilizing the natural tendency of hot air to rise, ensuring that the fan assembly 6 can quickly draw in hot air for heat dissipation, and ensuring that the temperature of the outer surface of the housing 1 does not overheat.

[0130] Furthermore, in this embodiment, the third fan blade 422 driven by the second drive motor 421 discharges the hot air in the lower cooking chamber 4 through the second air outlet 431, without drawing air from the third heat dissipation duct 8. With this design, most of the hot air between the shell 1 and the chamber housing 2, namely the air intake duct 5, the third heat dissipation duct 8 and the fourth heat dissipation duct 9, is concentrated and discharged through multiple first heat dissipation ducts 7 under the action of the first fan assembly 6.

[0131] By centrally controlling the heat dissipation path and airflow, the efficiency of overall heat management is improved, and it is ensured that the outer surface of the equipment can maintain a low temperature when the equipment is working at high efficiency, so as to avoid overheating or heat retention.

[0132] Specifically, the second drive motor 421 drives the third fan blade 422, so that 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 exhaust of hot air in the lower cooking chamber 4 and does not directly affect the air flow in the third heat dissipation duct 8.

[0133] Furthermore, the third fan blade 422 does not participate in the airflow within the third heat dissipation duct 8, thus preventing the lower cooking chamber 4 from affecting the airflow within the third heat dissipation duct 8, thereby avoiding overly complex airflow or heat dispersion.

[0134] In this design, the hot airflow between the shell 1 and the hopper 2 (i.e., the airflow through the suction channel 5, the third heat dissipation channel 8 and the fourth heat dissipation channel 9) is all drawn in by the first fan assembly 6 and discharged through multiple first heat dissipation channels 7, which avoids the dispersion of hot air and ensures the high efficiency and precise control of the heat dissipation process.

[0135] All hot air flows, including air from the suction duct 5, the third heat dissipation duct 8, and the fourth heat dissipation duct 9, are drawn in by the first fan assembly 6 and discharged through multiple first heat dissipation ducts 7. In this way, the entire equipment's heat dissipation system has a stronger ability to work together, ensuring that heat can be efficiently discharged from the equipment.

[0136] Furthermore, since the first fan assembly 6 is located at the top of the housing 2, it draws in hot air from inside the suction channel 5 and directs the hot air to multiple first heat dissipation channels 7 for discharge. This design ensures that hot air is drawn in from the top and can be quickly discharged from the equipment through vertical airflow.

[0137] Since hot air always rises, 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 more effectively attracting rising hot air without creating additional airflow resistance inside the equipment, thereby improving heat dissipation efficiency.

[0138] After the hot air rises to the top fan, it is quickly discharged from the equipment through the exhaust channel, avoiding the accumulation of temperature inside the equipment or uneven heat dissipation, and ensuring that the temperature of the outer surface of the casing 1 will not be overheated.

[0139] Preferably, in this embodiment, the volume of the second air outlet 431 is smaller than the volume of the first air outlet 71. Preferably, the area of ​​the second air outlet on the second air outlet 431 is smaller than the area of ​​the first air outlet of the first air outlet 71. This ensures the heat dissipation efficiency of the first heat dissipation duct 7. Furthermore, the second air outlet 431 serves as an auxiliary heat dissipation structure, assisting the lower cooking chamber 4 in dissipating excess heat and assisting 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 431 is small, avoiding the discharge of excessive heat, which could lead to insufficient heat inside the lower cooking chamber 4 and improper food processing.

[0140] Preferably, the second heating device 42 further includes a third heating element 424 disposed at the bottom of the lower cooking chamber 4. This design ensures the temperature inside the lower cooking chamber 4 and ensures that the food inside the second pot assembly 41 can be heated evenly.

[0141] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An air duct structure for an air fryer, characterized in that, The device includes a housing (1), which has a compartment housing (2) inside. The air duct structure 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 compartment housing (2). The first heat dissipation duct (7) is located above the compartment 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.

2. The air duct structure of an air fryer according to claim 1, 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).

3. The air duct structure of an air fryer according to claim 1, 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).

4. The air duct structure of an air fryer according to claim 3, 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).

5. The air duct structure of an air fryer according to claim 4, characterized in that, The air outlet section (73) 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) toward the second air outlet area (732).

6. The air duct structure of an air fryer according to claim 5, characterized in that, The second air outlet area (732) is located between the first air outlet area (731) and the first air outlet part (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 part (71).

7. The air duct structure of an air fryer according to claim 3, characterized in that, The first air outlet (71) includes a first air outlet shell and a first air outlet located on the first air outlet shell. The first air outlet is located on the outside of the shell (1). 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. The first air outlet is located on the top of the first air outlet shell and is facing upward.

8. The air duct structure of an air fryer according to claim 1, 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), and the third heat dissipation duct (8) is connected to the air intake duct (5).

9. The air duct structure of an air fryer according to claim 8, 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.

10. An air fryer, characterized in that, The air fryer includes a first pot assembly (31), a second pot assembly (41), and an air duct structure as described in any one of claims 1 to 9. The first pot assembly (31) corresponds one-to-one with the upper cooking chamber (3), and the second pot assembly (41) corresponds one-to-one with the lower cooking chamber (4). The chamber housing (2) is also provided 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).

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