An air fryer

Abstract

The application provides an air fryer, which comprises a shell and a reflecting cover arranged in the shell, a pot body is arranged below the reflecting cover, a cooking cavity is formed in the pot body, the reflecting cover is provided with an upwardly recessed hot air cavity, a heating element and a fan are arranged in the hot air cavity, on the front side of the reflecting cover, the bottom of the sidewall of the hot air cavity is bent forward to form a window mounting portion, a window glass is arranged on the window mounting portion, the hot air cavity is offset backward compared with the middle line of the cooking cavity, and a spoiler portion protruding into the hot air cavity is formed on one side of the sidewall of the hot air cavity close to the window mounting portion. Through the optimization of the structural design of the reflecting cover, more hot air is guided to flow to the front side area of the cooking cavity and the upper visible window position, so that the cooking uniformity of food and the observation clarity of the upper visible window are effectively improved.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, specifically to an air fryer. Background Technology

[0002] Air fryers are a popular and convenient appliance in modern kitchens. Their core working principle involves using an internal hot air circulation system to replace the oil used in traditional frying with high-speed hot air, enabling cooking operations such as baking and roasting. However, air fryers typically operate at high temperatures, generally between 180-220℃. While this high temperature quickly locks in moisture and enhances crispness, it can also easily lead to burnt areas of food if the heating time is not properly controlled.

[0003] To allow users to monitor the cooking process and avoid overcooking (e.g., burnt bread with bitter edges or charred chicken skin affecting appearance and taste), most air fryers have a viewing window on the pot, such as CN201920126061.0. Users can observe the changes in the food inside the cooking chamber through this window. However, traditional viewing windows are usually located on the lower front side of the pot, limiting the view and often only showing a portion of the cooking chamber, especially the bottom or edges of the food. This makes it difficult to fully grasp the overall condition, sometimes requiring pausing cooking and opening the basket to confirm. This affects cooking efficiency and can also cause temperature fluctuations that affect the taste of the food, making the observation effect less than ideal.

[0004] This is why air fryers with a "top viewing window" have begun to appear on the market, optimizing the viewing experience, such as CN202411676904.6. These air fryers cleverly place the top viewing window on the front of the unit, directly above the cooking chamber. They are typically made of heat-resistant transparent glass, allowing users to directly observe the entire cooking chamber from above without bending over or adjusting the angle. Users can clearly see the color changes of the food from raw to cooked, the crispness of the crust, and other details, and then flexibly adjust the cooking time or temperature based on the observed state, greatly improving ease of use and user experience.

[0005] However, the top viewing window also brings new problems, which brings us to the issue of the air fryer's hot air guiding structure. Most ordinary air fryers on the market have a heat-insulating reflector above the cooking cavity. This reflector not only insulates the high temperature inside the cooking cavity, preventing overheating of the outside of the unit, but its upward-recessed structure forms a "hot air cavity." The hot air assembly (usually including the heating element and fan) is installed inside this hot air cavity. During operation, the hot air generated by the hot air assembly is guided evenly downwards into the cooking cavity by the curved sidewalls of the hot air cavity. Because traditional hot air cavities are mostly evenly positioned directly above the cooking cavity, the hot air can be stably guided to all corners of the cooking cavity by the sidewalls, ensuring that food in different locations within the cooking cavity is evenly baked. For example, fries in the frying basket won't have some crispy and some soggy, resulting in a more consistent baking effect.

[0006] In air fryers with a top viewing window, because space needs to be reserved in the front area above the cooking cavity for the viewing window, the window directly occupies part of the space above the cooking cavity. The hot air cavity, which should have been evenly covering the cooking cavity, has to be shifted backward. As a result, the hot air cavity can no longer completely and evenly cover the cooking cavity as in traditional designs; its coverage area shrinks backward, leaving a "blank" area in the front.

[0007] This misalignment directly leads to an imbalance in hot air guidance: the hot air generated by the hot air assembly should diffuse outwards under the guidance of the hot air cavity sidewalls, but now most of the hot air can only be directed to the middle and rear areas of the cooking cavity, while the front area experiences a significant "hot air deficiency." In this situation, the heat distribution within the cooking cavity becomes uneven. If the user places ingredients such as chicken wings and French fries in the fryer basket, some of the ingredients located at the front of the cooking cavity may be undercooked due to insufficient hot air supply, resulting in a significant difference in cooking degree compared to the ingredients at the back. In severe cases, they may even be "undercooked," directly affecting the eating experience.

[0008] Even more problematic is the "lack of front-side hot air" caused by the rearward shift of the hot air chamber, which leads to the accumulation of distilled water in the upper viewing window. During cooking, food releases a large amount of water vapor when heated. This vapor could be partially expelled by the circulation of hot air or re-evaporated upon contact with high-temperature components. However, due to insufficient hot air at the front of the cooking chamber, the water vapor is difficult to remove quickly. The upper viewing window glass, located above the front, is at a lower temperature than the inside of the cooking chamber. When the water vapor comes into contact with the glass, it easily condenses into tiny water droplets, which may even gradually coalesce into a water film. When the water droplets or film accumulate to a certain extent, the user's view of the food through the upper viewing window is obstructed by the blurry water film. The originally clear "overhead view" becomes a blurry "foggy effect," making it impossible to accurately judge the state of the food. This renders the design of the upper viewing window meaningless and again brings a poor user experience. Utility Model Content

[0009] To address the issues of uneven cooking and water accumulation in air fryers with a top viewing window due to the rearward placement of the hot air chamber, this application optimizes the structural design of the reflector to guide more hot air towards the front area of ​​the cooking chamber and the top viewing window, thereby effectively improving the uniformity of food cooking and the clarity of observation through the top viewing window.

[0010] This application achieves its purpose through the following means: This application provides an air fryer, including a shell and a reflector disposed within the shell. A pot body is disposed below the reflector, and a cooking cavity is formed within the pot body. The reflector is provided with an upwardly recessed hot air cavity, and a heating element and a fan are installed within the hot air cavity. The heating element is disposed below the fan. On the front side of the reflector, the bottom of the side wall of the hot air cavity is bent forward to form a viewing window mounting portion, and a viewing window glass is mounted on the viewing window mounting portion. The hot air cavity is offset backward relative to the centerline of the cooking cavity, and a turbulence portion protruding towards the inside of the hot air cavity is formed on the side of the side wall of the hot air cavity near the viewing window mounting portion.

[0011] With the above technical solution, the reflector is bent at the bottom of the hot air cavity to form a window mounting section, specifically for assembling the window glass. In this way, the window glass can be directly installed on the reflector, which provides a stable and reliable mounting base. The entire installation structure is simple and compact, greatly reducing the operational difficulty during production and assembly, and improving production efficiency.

[0012] Meanwhile, a turbulence section protruding into the hot air cavity is formed on the side wall of the hot air cavity near the viewing window mounting part. Due to the inward convex shape of the turbulence section, the airflow will rotate circumferentially along the cavity wall due to the wall adhesion effect in the circumferential direction of the hot air cavity. When these airflows rotating along the side wall flow through the turbulence section, most of the hot air will flow along the surface of the turbulence section. The presence of the turbulence section is equivalent to extending the flow path of the hot air on the front side of the hot air cavity, allowing the hot air to stay in the front area for a longer time, thereby effectively compensating for the insufficient heat caused by the lack of hot air in this area and improving the heating uniformity of the front side of the cooking cavity.

[0013] Furthermore, when some airflow flows from other areas of the hot air cavity sidewall to the turbulence section, it is blocked by the protruding turbulence section and its direction is changed, causing more of it to flow towards the location of the viewing window. This directional airflow can promptly remove moisture adhering to the surface of the viewing window glass, significantly reducing the problem of blurred viewing window glass caused by moisture accumulation, and effectively ensuring the observation effect of the upper viewing window.

[0014] In a preferred embodiment, the distance between the turbulence-disrupting part and the axis of the fan gradually decreases from top to bottom.

[0015] When using the above technical solution, the distance between the baffle and the fan axis gradually decreases from top to bottom. As the hot air flows downwards, the distance between the baffle and the fan gradually narrows, meaning the flow channel at the location of the baffle becomes increasingly narrow. According to fluid dynamics principles, as the flow channel narrows, the wind pressure at the baffle gradually increases. When the hot air flows to the end of the baffle, it becomes more difficult to enter the area between the baffle and the fan due to the influence of wind pressure and the flow channel shape; conversely, the hot air tends to flow downwards and then further diffuses along the viewing window mounting section to the front area of ​​the cooking cavity. This process effectively compensates for the insufficient hot air supply in the front area, allowing the food to be heated more evenly, and also uses the flowing hot air to continuously remove moisture from the surface of the viewing window glass, thereby further optimizing the observation effect of the upper viewing window and allowing users to more clearly grasp the cooking status of the food.

[0016] In a preferred embodiment, the length of the turbulence section in the circumferential direction of the hot air cavity gradually increases from top to bottom.

[0017] After adopting the above technical solution, the turbulence section exhibits a structural characteristic of "gradually increasing length in the circumferential direction of the hot air cavity from top to bottom." This design allows the hot air velocity to decrease naturally and gradually as it flows downwards, by gradually extending its flow path. This avoids the situation where the air velocity loses sufficient kinetic energy due to a sudden decrease and cannot effectively blow towards the lower cooking cavity. It also allows the hot air to carry enough heat to blow onto the lower viewing window, reducing the probability of moisture accumulation in the viewing window.

[0018] In a preferred embodiment, the lower end of the spoiler extends to the window mounting portion.

[0019] With the above technical solution, when hot air flows through the baffle section, some of the airflow will flow downwards along the surface of the baffle section. Since the lower end of the baffle section extends directly to the window mounting section, this downward-flowing hot air will continue to diffuse along the window mounting section. This design plays a dual role: on the one hand, the structure of the window mounting section can effectively guide the hot air, directing more hot air to the front area of ​​the cooking cavity, further supplementing the hot air supply in that area; on the other hand, during the process of hot air flowing through the window mounting section, it will fully exchange heat with the water vapor on the surface of the window glass. The high-temperature hot air can quickly heat and evaporate the water vapor, carrying it away in time, thereby effectively preventing water vapor from accumulating on the glass surface, maintaining the clarity of the window glass, and ensuring good observation visibility.

[0020] In a preferred embodiment, the hot air cavity of the turbulence section is provided with guide arc surfaces at both ends in the circumferential direction.

[0021] With the above technical solution, the turbulence section has guide arc surfaces at both ends of the hot air cavity circumferentially. Through this arc surface structure, the turbulence section forms a smooth transition connection with other areas of the hot air cavity sidewall. When hot air flows towards the turbulence section, it avoids turbulence caused by direct obstruction from the turbulence section. Guided by the arc surface, the hot air can naturally transition to the turbulence section along a gentle path, rather than being suddenly blocked and impacting downwards upon encountering the turbulence section. This gentle transition effectively avoids the problem of uneven hot air flow caused by airflow impact, making the circulation of hot air within the entire cavity more stable and orderly.

[0022] In a preferred embodiment, the hot air cavity is square, and the sidewalls of the hot air cavity are formed by alternating straight walls and corner walls. The turbulence part is disposed on the straight wall, and the flow guiding arc surface is disposed close to the corner wall.

[0023] With the above technical solution, the hot air cavity is designed as a square structure, with its sidewalls consisting of straight walls and corner walls. Due to the wall-attachment effect, hot air flows stably along the sidewalls of the hot air cavity. The guide arc surface is deliberately positioned close to the corner wall, a design that offers dual practical value: firstly, by being close to the corner wall, the turbulence section retains sufficient extension length, effectively lengthening the flow path of the hot air. This significantly increases the residence time of the hot air in the front area of ​​the cooking cavity, effectively compensating for insufficient temperature in that area. Secondly, the obstruction effect of the guide arc surface makes it easier to form turbulence at the corner wall, thus breaking the originally stable hot air circulation. Under this effect, more hot air flows along the guide arc surface towards the viewing window mounting section, continuously carrying away moisture from the viewing window glass surface, thereby reducing moisture accumulation at the viewing window glass.

[0024] In a preferred embodiment, there are multiple turbulence-disrupting parts, and a recessed area is formed between two adjacent turbulence-disrupting parts.

[0025] When adopting the above technical solution, multiple airflow deflectors are designed, and a recessed area is formed between two adjacent deflectors. Considering that the deflectors themselves are located on the side closer to the window mounting part, the recessed area between adjacent deflectors has a clever airflow guiding function: it can "retain" some hot air in the recessed area. When this hot air flows in the recessed area, it is blocked by the deflectors on both sides, and then guided towards the window mounting part along the contour of the recessed area. Through this recessed area design, the blowing force and coverage of hot air on the window mounting part are further enhanced, and more hot air can flow directionally to the area where the window glass is located, continuously removing surface moisture, thereby more efficiently achieving the goal of reducing moisture accumulation on the window glass.

[0026] In a preferred embodiment, the length of the recessed area in the circumferential direction of the hot air cavity gradually decreases from top to bottom.

[0027] After adopting the above technical solution, the recessed area exhibits a structural characteristic of "the length of the hot air cavity gradually decreasing from top to bottom in the circumferential direction." This design allows the hot air entering the recessed area to naturally increase its speed slightly as the flow channel gradually narrows during downward flow, thereby enhancing the kinetic energy of the hot air. When the hot air carrying higher kinetic energy flows towards the window mounting part, its flow distance along the surface of the window mounting part will significantly increase. This means that the hot air can more fully cover the window glass area and more efficiently remove the moisture adhering to the surface, thereby further optimizing the anti-fog effect of the window glass and ensuring a clear field of view.

[0028] In a preferred embodiment, the distance between two adjacent spoilers is 40-60mm.

[0029] In a preferred embodiment, a window pressure plate is installed above the window mounting portion, and a fixing portion is formed in the area where the window mounting portion extends to the lower end of the spoiler portion. Fasteners fix the window pressure plate to the fixing portion and clamp the window glass.

[0030] Using the above technical solution, the area where the window mounting part extends to the lower part of the spoiler part forms a fixing part. The window glass is fixed to the fixing part by fasteners. Since the fixing part is formed by the area where the window mounting part extends to the lower part of the spoiler part, and since the spoiler part protrudes into the hot air cavity, the fixing part is closer to the inside, and has more space to install fasteners. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the air fryer described in this application.

[0032] Figure 2 This is a schematic diagram of the combination of the reflector and the pot body of the air fryer of this application.

[0033] Figure 3 This is a schematic diagram of the structure of a reflector for the air fryer of this application.

[0034] Figure 4 This is a schematic diagram of another reflector structure for the air fryer of this application.

[0035] The meanings of the various markings in the diagram are as follows: 1. Shell; 2. Viewing window glass; 3. Viewing window pressure plate; 4. Reflector; 41. Top wall; 42. Side wall; 420. Fluid spoiler; 421. Viewing window mounting part; 422. Light transmission hole; 423. Fluid guide arc surface; 424. Recessed area; 425. Fixing part; 5. Pot body. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this application, a detailed explanation will be provided below with reference to the accompanying drawings.

[0037] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0039] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two connected entities do not establish a connection relationship through a transitional structure, but are connected solely by a connecting structure to form a whole. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0043] This application provides an air fryer, the overall structure of which includes a shell 1, a reflector 4 installed inside the shell 1, and a pot body 5 correspondingly arranged below the reflector 4. The interior of the pot body 5 forms a cooking cavity specifically for placing food, and the reflector 4 covers the cooking cavity, forming a relatively enclosed heating space. The reflector 4 forms a hot air cavity by being recessed upwards, and a hot air assembly for realizing hot air circulation is installed in this hot air cavity. When the air fryer is powered on and starts working, the hot air assembly continuously generates high-temperature hot air. Under the guidance of the side wall 42 of the hot air cavity, this hot air flows downwards and gradually fills the entire cooking cavity, allowing the food inside the cavity to be evenly baked by the hot air, ultimately completing the cooking process. It is understood that the hot air assembly includes a fan and a heating element. The heating element is generally located below the fan. In other embodiments, the heating element may also be arranged around the fan, without specific limitation.

[0044] To allow users to observe the real-time status of the food inside the cooking chamber, the air fryer of this application is equipped with a viewing window structure. Specifically, the reflector 4, at the bottom of the hot air chamber, is bent forward to form a viewing window mounting part 421 for mounting the viewing window glass 2. A light-transmitting hole 422 is correspondingly opened on this viewing window mounting part 421, and the viewing window glass 2 is fitted into this light-transmitting hole 422. Users can clearly observe the cooking status of the food inside the cooking chamber through the viewing window glass 2. Since the viewing window mounting part 421 is located at the front upper part of the cooking chamber, this position eliminates the need for users to deliberately adjust the angle when observing, resulting in a more reasonable overall viewing angle and significantly improving the user experience. Furthermore, the viewing window glass 2 can be directly mounted on the viewing window mounting part 421 of the reflector 4. The reflector 4 itself has sufficient structural strength to provide a stable and reliable mounting base for the viewing window glass 2. The entire mounting structure requires no additional complex connectors, making it simple and compact, greatly reducing the operational difficulty during production and assembly, and contributing to improved overall production efficiency. Understandably, the front of housing 1 has a transparent section corresponding to the viewing window glass.

[0045] Regarding the installation of the viewing window 2, a preferred embodiment is as follows: the air fryer is equipped with a viewing window pressure plate 3, which is installed above the viewing window mounting part 421. The viewing window pressure plate 3 is fixed to the viewing window mounting part 421 by fasteners. During the fixing process, the viewing window pressure plate 3 will tightly press and fix the viewing window 2 to the viewing window mounting part 421, ensuring its stable installation. The fasteners used can be common fastening components such as screws and bolts. In addition, to ensure that no steam leakage occurs at the viewing window 2, a sealing element is generally required between the viewing window 2 and the reflector 4 for sealing.

[0046] When a viewing window mounting portion 421 is provided on the front side of the reflector 4, in order to avoid the viewing window mounting portion 421 having too much influence on the layout of the hot air cavity, the hot air cavity is preferably offset backward relative to the center of the cooking cavity (the centerline of the hot air cavity is located behind the centerline of the cooking cavity in the front-back direction). However, in this case, the hot air distribution in the front area of ​​the cooking cavity may be affected to a certain extent. In order to ensure the uniformity of the overall heat distribution of the cooking cavity, in this application, the hot air cavity has a top wall 41 and a surrounding side wall 42, and a turbulence portion 420 protruding into the hot air cavity is formed on the side wall 42 near the viewing window mounting portion 421, so as to optimize the flow state of the hot air.

[0047] Because the baffle 420 is convex inward, the airflow naturally rotates circumferentially along the cavity wall due to the wall adhesion effect in the circumferential direction of the hot air cavity. When this airflow rotating along the side wall 42 flows past the baffle 420, most of the hot air continues to flow along the surface of the baffle 420. The presence of the baffle 420 is equivalent to adding a bypass path for the airflow at the front of the hot air cavity, extending the flow path of the hot air at the front of the hot air cavity, allowing the hot air to stay in this front area for a longer time. This effectively compensates for the problem of missing hot air in this area that may be caused by the offset of the hot air cavity, improves the heating uniformity at the front of the cooking cavity, and ensures that all parts of the food are heated evenly.

[0048] Furthermore, when some airflow flows from other areas of the hot air cavity sidewall 42 to the turbulence section 420, it is blocked by the protruding turbulence section 420, thus changing its original flow direction. This causes some airflow to surge towards the location of the viewing window mounting section 421. These directional airflows can promptly remove moisture generated on the surface of the viewing window glass 2 due to cooking, significantly reducing the blurring of the viewing window glass 2 caused by moisture accumulation. This effectively ensures the viewing effect of the window, allowing users to clearly see the situation inside the cavity at all times.

[0049] In a preferred embodiment, the aforementioned window pressure plate 3 is provided above the window mounting portion 421. A fixing portion 425 is formed in the area where the window mounting portion 421 extends to the lower end of the deflector portion 420. Fasteners pass through the window pressure plate 3 and are fixed to the fixing portion 425, simultaneously clamping the window glass 2 between the window pressure plate 3 and the window mounting portion 421. The advantage of this arrangement is that, since the fixing portion 425 is formed by the area where the window mounting portion 421 extends to the lower part of the deflector portion 420, and the deflector portion 420 itself protrudes into the hot air cavity, the fixing portion 425 is positioned closer to the inner side of the hot air cavity. Compared to the outer area, this provides more space for installing fasteners, avoiding installation difficulties caused by limited space.

[0050] It is understood that the air fryer of this application is not limited in its structural form; it can be a common flip-top air fryer or a drawer-type air fryer, and the choice can be made according to actual design needs and usage scenarios without specific limitations. Meanwhile, the reflector 4 in this application is made of metal. Metal not only has good high-temperature resistance but is also easy to process. The reflector 4 can be integrally formed into the required structure, such as the viewing window mounting part 421 or the airflow deflector 420, through mature metal processing methods such as stamping or bending, which helps to ensure the integrity and stability of the structure. Furthermore, to prevent hot air from leaking from the installation gap of the viewing window glass 2 in the cooking cavity, ensuring heat utilization efficiency and preventing damage to external components due to high temperatures, a preferred solution is to provide a sealing ring between the viewing window glass 2 and the viewing window mounting part 421. The sealing effect of the sealing ring improves the sealing performance of the installation position. Additionally, the number of airflow deflectors 420 can be set according to the specific size of the hot air cavity and the hot air flow requirements; there can be one or more, and the specific number is not strictly limited.

[0051] Preferably, the distance between the baffle 420 and the fan's axis gradually decreases from top to bottom. With this configuration, as the hot air flows downwards, the distance between the baffle 420 and the fan gradually narrows, meaning the airflow channel at the location of the baffle 420 becomes increasingly narrow. Based on the fundamental principles of fluid mechanics, as the flow channel narrows, the wind pressure at the baffle 420 gradually increases. When the hot air flows to the end of the baffle 420, under the combined influence of wind pressure and the flow channel shape, it becomes more difficult to enter the area between the baffle 420 and the fan; conversely, the hot air tends to flow downwards and then further diffuses along the viewing window mounting portion 421 to the front area of ​​the cooking cavity. This process effectively compensates for insufficient hot air supply in the front area, allowing for more even heating of all parts of the food, and the continuous flow of hot air constantly removes moisture from the surface of the viewing window glass 2, further optimizing the viewing effect and allowing users to more clearly and accurately grasp the cooking status of the food.

[0052] In one embodiment, the fan shaft is vertically oriented, and the turbulence-disrupting part 420 gradually protrudes inward from top to bottom, causing the distance between the turbulence-disrupting part 420 and the fan shaft to gradually decrease from top to bottom, thus adapting to the airflow direction of the fan. Of course, in other embodiments, the fan shaft can also be tilted according to the needs of hot air circulation; simply adjust the shape of the turbulence-disrupting part 420 accordingly to ensure it still performs a good turbulence-disrupting function.

[0053] Preferably, the length of the turbulence section 420 in the circumferential direction of the hot air cavity gradually increases from top to bottom. With this arrangement, as the hot air flows downward, the airflow speed naturally and gradually decreases by gradually extending its flow path. This design avoids the airflow speed from losing sufficient kinetic energy due to a sudden decrease, which would prevent it from effectively blowing into the cooking cavity below, ensuring that the hot air can fully act on the food. It also ensures that the hot air carries enough heat to blow onto the lower viewing window area during its flow, reducing the probability of moisture accumulating on the viewing window surface due to low temperature.

[0054] Preferably, the lower end of the baffle 420 extends downward to the window mounting portion 421. With this configuration, when hot air flows through the baffle 420, some airflow will flow downward along the surface of the baffle 420. Since the lower end of the baffle 420 extends directly to the window mounting portion 421, this downward-flowing hot air will continue to diffuse along the surface of the window mounting portion 421. This design has a dual positive effect: on the one hand, the structure of the window mounting portion 421 itself can effectively guide the hot air, directing more hot air to the front area of ​​the cooking cavity, further supplementing the hot air supply in that area and ensuring uniform heating; on the other hand, during the flow of hot air through the window mounting portion 421, it will fully exchange heat with the water vapor on the surface of the window glass 2. The high-temperature hot air can quickly heat and evaporate this water vapor, while promptly carrying away the evaporated water vapor, thereby effectively preventing water vapor from accumulating on the glass surface, maintaining the clarity of the window glass 2, and ensuring good visibility.

[0055] Preferably, the turbulence-disrupting section 420 has guide arc surfaces 423 at both ends of the circumference of the hot air cavity. This arc surface structure creates a smooth transition between the turbulence-disrupting section 420 and other areas of the hot air cavity sidewall 42. When hot air flows towards the turbulence-disrupting section 420, the guide arc surfaces 423 prevent the airflow from becoming turbulent due to direct obstruction by the turbulence-disrupting section 420. Guided by the arc surfaces, the hot air can naturally transition along a gentle path to the turbulence-disrupting section 420, rather than being suddenly obstructed and impacting downwards upon encountering it. This gentle transition effectively avoids the problem of uneven hot air flow caused by airflow impact, making the circulation of hot air within the entire cavity more stable and orderly, ensuring consistent heating performance.

[0056] It is understandable that when there is one turbulence section 420, the guide arc surface 423 is correspondingly set at both ends of the turbulence section 420 along the circumference of the hot air cavity to ensure that the airflow on both sides can transition smoothly; when there are multiple turbulence sections 420, the guide arc surface 423 needs to be set at both ends of each turbulence section 420 along the circumference of the hot air cavity to ensure that each turbulence section 420 can form a good airflow transition with the surrounding area.

[0057] In a preferred embodiment, the reflector 4 forms a square hot air cavity (i.e., the outer contour of the hot air cavity projected onto the horizontal plane is square). The sidewall 42 of the hot air cavity is formed by alternating straight walls and corner walls. The turbulence-disrupting part 420 is disposed on the straight wall, while the guide arc surface 423 is disposed near the corner wall. Under the effect of the wall attachment, the hot air flows stably along the sidewall 42 of the hot air cavity. The guide arc surface 423 is deliberately arranged near the corner wall. This design has a dual practical value: on the one hand, the turbulence-disrupting part 420 can retain sufficient extension length, which can effectively extend the flow path of the hot air. This significantly increases the residence time of the hot air in the front area of ​​the cooking cavity, thereby effectively compensating for the possible insufficient temperature in this area. On the other hand, with the blocking effect of the guide arc surface 423, it is easier to break the original stable airflow state at the corner wall, forming turbulence, and thus breaking the original stable hot air circulation state. Under this effect, more hot air will flow along the guide arc surface 423 to the window mounting part 421, and carry away the water vapor by continuously flowing over the surface of the window glass 2, thereby reducing the accumulation of water vapor at the window glass 2.

[0058] In another preferred embodiment, multiple baffles 420 are provided, and a recessed area 424 is formed between two adjacent baffles 420. The recessed area 424 is concave outward compared to the two baffles 420 on both sides. With this arrangement, some hot air can be "retained" in the recessed area 424. When this hot air flows in the recessed area 424, it will be blocked by the baffles 420 on both sides, and then guided towards the window mounting part 421 along the contour of the recessed area 424. Through this recessed area 424 design, the blowing force and coverage of hot air on the window mounting part 421 are further enhanced, and more hot air can flow directionally to the area where the window glass 2 is located, continuously removing surface moisture, thereby more efficiently achieving the purpose of reducing moisture accumulation on the window glass 2.

[0059] Preferably, the length of the recessed area 424 in the circumferential direction of the hot air cavity gradually decreases from top to bottom. As the hot air entering the recessed area 424 flows downward, the air velocity naturally increases slightly due to the gradually narrowing flow channel, thereby enhancing the kinetic energy of the hot air. When the hot air carrying higher kinetic energy flows towards the window mounting part 421, its flow distance along the surface of the window mounting part 421 will increase significantly. This means that the hot air can more fully cover the area of ​​the window glass 2 and more efficiently remove the moisture adhering to the surface, thereby further optimizing the anti-fog effect of the window glass 2 and ensuring a clear field of view.

[0060] It is understood that the distance between two adjacent spoilers 420 is preferably 40-60mm, and can be selected according to the actual structural dimensions, such as 40mm, 45mm, 50mm, 57mm, 60mm, etc., without specific limitation.

[0061] The technical solutions protected in this application are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the scope of protection of this application. Although this application has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this application are within the scope of protection claimed in this application.

Claims

1. An air fryer, comprising a shell and a reflector disposed within the shell, a pot body disposed below the reflector, a cooking cavity formed within the pot body, a concave hot air cavity disposed on the reflector, a heating element and a fan installed within the hot air cavity, the heating element being disposed below the fan, characterized in that, On the front side of the reflector, the bottom of the sidewall of the hot air cavity is bent forward to form a window mounting part, on which a window glass is mounted, and the hot air cavity is offset backward relative to the centerline of the cooking cavity. A turbulence part protruding into the hot air cavity is formed on the side of the sidewall of the hot air cavity near the window mounting part.

2. An air fryer according to claim 1, characterized in that, The distance between the turbulence-causing part and the axis of the fan gradually decreases from top to bottom.

3. An air fryer according to claim 1, characterized in that, The length of the turbulence section in the circumferential direction of the hot air cavity gradually increases from top to bottom.

4. An air fryer according to claim 1, characterized in that, The lower end of the spoiler extends to the window mounting portion.

5. An air fryer according to claim 1, characterized in that, The hot air cavity of the turbulence section has guide arc surfaces at both ends in the circumferential direction.

6. An air fryer according to claim 5, characterized in that, The hot air cavity is square, and the sidewalls of the hot air cavity are formed by alternating straight walls and corner walls. The turbulence part is disposed on the straight wall, and the flow guiding arc surface is disposed close to the corner wall.

7. An air fryer according to claim 1, characterized in that, The disturbance part is multiple, and a recessed area is formed between two adjacent disturbance parts.

8. An air fryer according to claim 7, characterized in that, The length of the recessed area in the circumferential direction of the hot air cavity gradually decreases from top to bottom.

9. An air fryer according to claim 7, characterized in that, The distance between two adjacent spoilers is 40-60mm.

10. An air fryer according to claim 1, characterized in that, A window pressure plate is installed above the window mounting part, and a fixing part is formed in the area where the window mounting part extends to the lower end of the spoiler part. Fasteners fix the window pressure plate on the fixing part and clamp the window glass.

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