An air fryer

Abstract

The application discloses an air fryer, which comprises a cooking cavity and a fan for sending air into the cooking cavity, the cooking cavity is provided with an exhaust port communicated with the outside atmosphere, and the air fryer further comprises a motor, a one-way driving assembly and an air outlet adjusting device arranged at the exhaust port, the motor is connected with the fan and the one-way driving assembly through a motor shaft; when the motor drives the fan to rotate forward, the one-way driving assembly does not drive the air outlet adjusting device to move, when the motor drives the fan to rotate reversely, the one-way driving assembly drives the air outlet adjusting device to move so as to adjust the air outlet amount at the exhaust port. In the application, the fan for sending air into the cooking cavity and the one-way driving assembly for driving the air outlet adjusting device to move share one motor, the number of motors is reduced, the cost is lowered, the structure is more compact, the internal layout is more reasonable, and the miniaturization of the air fryer is facilitated.

Description

Technical Field

[0001] This application belongs to the field of household appliance technology, specifically relating to an air fryer. Background Technology

[0002] An air fryer generally consists of a main body, a cooking chamber formed within the main body, and a hot air assembly located within the main body that supplies high-temperature air into the cooking chamber. The cooking chamber contains a pot for holding food. The high-temperature air generated by the hot air assembly heats the food inside the cooking chamber, ensuring thorough contact between the hot air and the food. This utilizes the moisture lost from the food's surface or the oil produced during heating to create a crispy texture, similar to deep-frying. However, existing air fryers also draw moisture from the food when heating it with hot air, resulting in a dry texture. Shortening the heating time to retain moisture can lead to undercooked food, resulting in a burnt exterior and raw interior. Prolonged heating will cause all moisture to be lost, leaving the food dry and tough.

[0003] To solve this technical problem, existing technologies generally involve adding water to the cooking cavity during the cooking process or adjusting the humidity inside the cooking cavity by changing the size of the air outlet of the unit, in order to reduce the loss of moisture from the food itself and achieve a tender roasting effect.

[0004] Patent document CN202220593531.6 discloses a steam air fryer, including a shell, a reflector, a window switching mechanism, a heating component, and an air vent. The shell contains a heating chamber, and the heating component is located within the heating chamber. The air vent is located on the shell, and the reflector has an air vent connecting the heating chamber and the air vent. The window switching mechanism includes a baffle plate and a drive assembly. The drive assembly is located on the shell and connected to the baffle plate. The drive assembly includes a drive knob, a rotating shaft, and a lever. The rotating shaft is located inside the shell and connected to the drive knob. The drive knob is manually driven, and the rotating shaft can be rotated along its own axis by the drive knob. The lever is connected to the rotating shaft. As the shaft rotates, one end of the lever connects to the baffle plate. The baffle plate has a guide groove for the lever to pass through. Through the cooperation of the lever and the guide groove, the rotating lever can convert the arc motion into the baffle plate sliding up and down along the reflector. The air vent on the reflector is a first grid formed by multiple spaced intervals. The baffle plate has a second grid corresponding to the air vent. By sliding up and down the baffle plate, the second grid on the baffle plate can be misaligned or aligned with the air vent, thereby blocking or opening the air vent. This allows the air inside the air fryer to achieve internal circulation mode when empty, or to exhaust all the internal air to the outside of the shell through the air vent. This technical solution has a corresponding function mode mark on the shell located at the position of the drive knob. When it is necessary to adjust the function mode, the drive knob is manually rotated to the corresponding mark position to ensure that the baffle plate moves into place. However, for scenarios requiring multiple mode switching during the cooking process, each adjustment necessitates manual rotation of the knob, making the process cumbersome and increasing the user's workload. Furthermore, during cooking, users must constantly monitor the status and manually switch modes, distracting them from the food preparation itself or other kitchen tasks. Moreover, manual adjustment relies on the user's subjective judgment to determine if the knob is properly rotated, unlike automatic adjustment which uses sensors for precise control. This can easily lead to incomplete adjustments, affecting cooking results. Additionally, for cooking processes requiring fine-tuning, manual adjustment struggles to achieve precise fine-tuning, failing to meet the needs of some ingredients or dishes with demanding cooking conditions.

[0005] Patent document CN221671438U discloses a steam-and-bake integrated cooking appliance, including a shell with a cooking cavity, a cooking container inside the cooking cavity, a bottom heating element for heating the cooking container at the bottom of the cooking cavity, an air guide hood with a hot air chamber above the cooking cavity, a hot air assembly inside the hot air chamber, and an air duct assembly on the shell. The air duct assembly includes an air duct, an air duct adjustment motor, and an air duct baffle; the air duct adjustment motor drives the air duct baffle to adjust the ventilation area of ​​the air duct. This technical solution achieves automatic control by adding a separate air duct adjustment motor to drive the air duct baffle, but its overall cost is high, and it requires related circuit control components, increasing the complexity of the machine. Moreover, the air duct adjustment motor and its supporting circuits occupy a certain amount of space, resulting in a more compact internal layout of the cooking appliance, which may affect the installation and heat dissipation of other components, and may even lead to an increase in the overall size of the cooking appliance, reducing the space utilization rate of the cooking appliance. Utility Model Content

[0006] This application provides an air fryer to solve the technical problems of existing air fryers that use automatic control to adjust the ventilation area, which require a separate adjustment motor, resulting in increased space occupation, increased structural complexity, decreased operational stability, and are not conducive to the miniaturization of the whole machine.

[0007] The technical solution adopted in this application is as follows:

[0008] An air fryer includes a cooking chamber and a fan for supplying air into the cooking chamber. The cooking chamber has an exhaust port that communicates with the outside atmosphere. The air fryer also includes a motor, a one-way drive assembly, and an air outlet adjustment device disposed at the exhaust port. The motor is connected to both the fan and the one-way drive assembly via a motor shaft. When the motor drives the fan to rotate forward, the one-way drive assembly does not drive the air outlet adjustment device. When the motor drives the fan to rotate in reverse, the one-way drive assembly drives the air outlet adjustment device to adjust the airflow at the exhaust port.

[0009] In this application, the fan for blowing air into the cooking cavity and the unidirectional drive component for driving the air outlet adjustment device share a single motor. Compared to existing technologies, this reduces the number of motors used, lowering the cost of adding additional motors and related hardware costs such as mounting brackets and circuit control components. Furthermore, the structure is more compact, saving space required for additional motors and related components, resulting in a more rational internal layout and contributing to the miniaturization of the entire air fryer. From another perspective, since there is no need to add an extra motor to drive the unidirectional drive component, potential mechanical and electrical failure points are reduced, lowering the likelihood of air fryer malfunctions due to motor or circuit problems and improving the air fryer's reliability. Moreover, because the fan and unidirectional drive component share a single motor, the energy consumption of adding an extra motor is avoided, reducing the overall energy consumption of the air fryer, improving the product's energy efficiency ratio, and aligning with energy-saving trends. Furthermore, by integrating the fan drive and airflow adjustment function switching into a single motor drive, the different states of the airflow adjustment device are switched by the forward and reverse rotation of the motor. This simplifies the control logic, reduces the requirements and costs of developing a control system, and improves the integration and intelligence level of the product's functions. In addition, the airflow adjustment device in this application can accurately adjust the airflow from the exhaust port according to the forward and reverse rotation of the motor, ensuring the stability of temperature and humidity within the cooking cavity during cooking, thereby improving the stability and consistency of the cooking results.

[0010] The one-way drive assembly includes a one-way bearing and at least one transmission gear sleeved on the one-way bearing. When the motor drives the fan to rotate forward, the transmission gear does not rotate under the action of the one-way bearing. When the motor drives the fan to rotate in reverse, the transmission gear rotates under the action of the one-way bearing.

[0011] This technical solution employs a one-way bearing and transmission gear to achieve unidirectional transmission. This combination allows for a compact layout between the motor and the air outlet adjustment device, eliminating the need for a separate large transmission mechanism and reducing space requirements. Furthermore, compared to other transmission mechanisms, the combination of a one-way bearing and transmission gear reduces structural complexity, improves reliability, and minimizes potential failure points. Moreover, the stable cooperation between the one-way bearing and transmission gear effectively ensures that the air outlet adjustment device accurately switches its state when the motor drives the fan in forward and reverse rotation, guaranteeing optimal cooking results. In addition, the smooth power transmission achieved by the one-way bearing and transmission gear reduces vibration and impact throughout the transmission process, lowers operating noise, and enhances the user experience.

[0012] The one-way bearing is mounted on the motor shaft.

[0013] This technical solution directly mounts the one-way bearing onto the motor shaft, eliminating the need for additional structures (such as extra shafts, brackets, or connectors) and installation space to secure the bearing. This allows for a more compact transmission system, contributing to the miniaturization of the air fryer. Furthermore, by directly mounting the bearing onto the motor shaft, intermediate transmission links are reduced, minimizing energy loss caused by multi-stage transmission and improving system transmission efficiency. This allows the motor's output power to be more effectively transmitted to the fan and airflow adjustment device. Moreover, the compact structure and reduced intermediate links result in a more stable one-way transmission system during operation, with reduced vibration and noise. This not only improves the user experience but also helps extend the air fryer's lifespan. Additionally, directly mounting the one-way bearing onto the motor shaft enables faster response to the motor's forward and reverse rotation commands, allowing for quick start and stop. This improves the dynamic performance and response speed of the airflow adjustment device, accommodating different airflow adjustment modes for various cooking programs and ensuring optimal cooking results.

[0014] The unidirectional drive assembly has a first rotating shaft parallel to the motor shaft, and the unidirectional bearing is fitted onto the first rotating shaft.

[0015] This technical solution places a one-way bearing on a first shaft parallel to the motor shaft. In practical applications, the position of the one-way bearing and its transmission components can be flexibly adjusted according to the overall structure and spatial layout requirements of the product, helping to optimize internal space and improve space utilization. In this solution, the load of the one-way bearing and its related components is borne by the first shaft, rather than directly on the motor shaft. This arrangement helps reduce the load and wear on the motor shaft, mitigating the risk of deformation due to overload, improving the reliability and lifespan of the motor, and thus enhancing the stability and reliability of the entire one-way transmission system. Furthermore, the parallel arrangement of the first shaft and the motor shaft reduces vibration and impact caused by the direct connection of the one-way bearing to the motor shaft, resulting in smoother operation of the entire one-way transmission system, reduced noise and vibration levels, and improved user experience. Moreover, as an intermediate link in power transmission, the first shaft allows for the design and adjustment of the transmission ratio according to actual needs, enabling more precise speed control. From another perspective, placing the unidirectional drive component on the first rotating shaft parallel to the motor shaft allows the unidirectional drive component to be designed and manufactured as an independent module, and modularly assembled with the first rotating shaft, thereby improving production efficiency and assembly efficiency.

[0016] A drive gear is fitted on the motor shaft, and a driven gear that meshes with the drive gear is fitted on the first rotating shaft. When the motor drives the fan to rotate, the drive gear drives the driven gear to rotate, and the driven gear drives the first rotating shaft to rotate synchronously. The radius of the driven gear is larger than the radius of the drive gear.

[0017] This technical solution employs a drive gear and driven gear meshing transmission method to transmit the motor's power to the unidirectional drive component. Its simple and compact structure reduces the space required for installation, contributing to the miniaturization of the entire machine. Furthermore, the drive gear and driven gear transmit power through direct meshing, eliminating intermediate flexible parts, resulting in minimal energy loss and high transmission efficiency. In this solution, the radius of the driven gear is larger than that of the drive gear, which reduces the rotational speed of the first shaft, making the operation of the unidirectional drive component and the air outlet regulating device smoother. This reduces abnormal noise during operation and allows for precise control of the air outlet regulating device's movement, facilitating precise control of the exhaust port's opening and closing degree and achieving accurate adjustment of the exhaust volume.

[0018] The air outlet adjustment device includes a wind deflector that blocks the exhaust port and a transmission mechanism that is linked to the wind deflector. When the motor drives the fan to reverse, the one-way drive component drives the transmission mechanism to move, thereby moving the wind deflector and adjusting the area of ​​the exhaust port it blocks.

[0019] The transmission mechanism in this technical solution makes the movement of the wind deflector smoother, reduces the impact and vibration during movement, and lowers the noise during operation. Moreover, through the linkage of the transmission mechanism, the movement of the wind deflector can be precisely controlled, and the area of ​​the exhaust port can be accurately adjusted to meet the precise control of exhaust volume in different cooking modes.

[0020] The unidirectional drive assembly includes a drive gear, and the transmission mechanism includes a first transmission component and a second transmission component. When the motor drives the fan to rotate in the opposite direction, the drive gear rotates to drive the first transmission component to reciprocate linearly between a first position and a second position. When the first transmission component switches from the second position to the first position, it drives the second transmission component to move. The wind deflector adjusts the area of ​​the exhaust port it covers.

[0021] Compared to other motion conversion methods, this technical solution switches the rotational motion of the drive gear to the linear reciprocating motion of the first transmission component. This transmission method is simple and efficient, improving the overall efficiency of the transmission system. Furthermore, this motion method allows for precise control of the position of the first transmission component, ensuring accurate switching between the first and second positions, thereby achieving precise adjustment of the exhaust port coverage area. The combination of the rotational motion of the drive gear and the linear reciprocating motion of the first transmission component provides stable mechanical transmission, reducing instability caused by gaps or looseness between moving parts. In addition, the movement and coordination of the drive gear, the first transmission component, and the second transmission component better utilize the internal space of the air fryer, making the fit between components tighter, improving space utilization, and contributing to the miniaturization of the entire machine.

[0022] The air fryer also includes a first reset component for driving the first transmission component to switch from the second position to the first position.

[0023] This technical solution, by incorporating a first reset component, ensures that the first transmission component accurately returns to its initial state after each action, preventing mechanical failures or performance degradation caused by positional deviations. This enhances the stability and reliability of the air outlet adjustment device. The automatic reset function of the first transmission component guarantees the precision of the transmission system, ensuring that the expected shielding area is achieved each time the exhaust port is adjusted, maintaining the accuracy of temperature and humidity control within the cooking cavity during cooking. Furthermore, during the automatic reset process, the first reset component cushions the movement of the first transmission component, reducing impact and vibration, making the entire transmission system operate more smoothly and lowering noise levels.

[0024] The first transmission component is provided with a driving inclined surface, and the second transmission component is provided with a mating inclined surface. When the first transmission component switches from the second position to the first position, the driving inclined surface abuts against the mating inclined surface to drive the second transmission component to move.

[0025] In this technical solution, the contact between the first and second transmission components via inclined planes enables smooth motion transmission, reducing impact and vibration, making the movement of the second transmission component more stable, and improving the overall operating efficiency of the transmission system. Furthermore, the inclined planes reduce energy loss during movement, ensuring efficient power transmission to the second transmission component, thereby improving the system's transmission efficiency. In addition, the inclined planes allow for effective motion transmission within a smaller space, helping to optimize the spatial layout within the air fryer, making the overall structure more compact, and contributing to the miniaturization of the air fryer.

[0026] The air fryer also includes a second reset member for maintaining the air deflector in a tendency to close or open the exhaust vent.

[0027] The second reset component in this technical solution enables the air fryer to return the baffle to its initial state when switching cooking modes, preparing for the next adjustment of the exhaust port and improving the stability and reliability of the exhaust port adjustment. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a cross-sectional view of a portion of the air fryer structure when the motor drives the fan to rotate forward, according to one embodiment of this application.

[0030] Figure 2 This is a schematic diagram showing the states of the motor, fan, unidirectional drive assembly, and air outlet adjustment device when the motor drives the fan to rotate forward, according to one embodiment of this application.

[0031] Figure 3 This is a cross-sectional view of the motor, fan, unidirectional drive assembly, and air outlet adjustment device when the motor drives the fan to rotate forward according to one embodiment of this application.

[0032] Figure 4 This is a cross-sectional view of a portion of the air fryer structure when the motor drives the fan to reverse in one embodiment of this application.

[0033] Figure 5 This is a schematic diagram showing the states of the motor, fan, unidirectional drive assembly, and air outlet adjustment device when the motor drives the fan to reverse in one embodiment of this application.

[0034] Figure 6 This is a cross-sectional view of the motor, fan, unidirectional drive assembly, and air outlet adjustment device when the motor drives the fan to reverse in one embodiment of this application.

[0035] Figure 7 This is a perspective view of a unidirectional drive component according to one embodiment of this application;

[0036] Figure 8 This is a cross-sectional view of a unidirectional drive component according to one embodiment of this application;

[0037] Figure 9 This is an exploded view of a unidirectional drive component according to one embodiment of this application;

[0038] Figure 10 This is an assembly diagram of the drive gear and cam according to one embodiment of this application.

[0039] in,

[0040] 1. Motor; 101. Motor shaft;

[0041] 2. One-way drive assembly; 21. One-way bearing; 22. Transmission gear; 23. First shaft; 24. Driven gear;

[0042] 3. Drive gear;

[0043] 4. Fan;

[0044] 5. Drive gear;

[0045] 6. Second rotating shaft;

[0046] 7. Cam;

[0047] 8. First transmission component; 81. Driving inclined plane;

[0048] 9. Second transmission component; 91. Mating inclined plane;

[0049] 10. First reset component;

[0050] 11. Second reset component;

[0051] 12. Windshield components;

[0052] 13. Slide rail;

[0053] 14. Reflector. Detailed Implementation

[0054] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0055] Many specific details are set forth in the following description to provide a thorough 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. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0056] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this application.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] 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.

[0059] like Figure 1 and Figure 4 As shown, an air fryer includes a cooking chamber and a fan 4 for supplying air into the cooking chamber. The cooking chamber has an exhaust port that communicates with the outside atmosphere. The air fryer also includes a motor 1, a one-way drive assembly 2, and an air outlet adjustment device disposed at the exhaust port. The motor 1 is connected to both the fan 4 and the one-way drive assembly 2 via a motor shaft 101. When the motor 1 drives the fan 4 to rotate forward, the one-way drive assembly 2 does not drive the air outlet adjustment device to move. When the motor 1 drives the fan 4 to rotate in reverse, the one-way drive assembly 2 drives the air outlet adjustment device to move to adjust the air volume at the exhaust port.

[0060] This application does not limit the specific structure of the air fryer: In one embodiment, the air fryer includes a pot body and a motor head hinged to the pot body to open or close the pot body. When the motor head is closed to the pot body, the motor head and the pot body cooperate to form a cooking cavity. A reflector 14 is provided inside the motor head and located above the cooking cavity. The reflector 14 is recessed on the side facing the cooking cavity to form a groove to accommodate the fan 4 and the heating element. The exhaust port is located on the reflector 14. The motor 1 is located on the side of the reflector 14 facing away from the cooking cavity. The air outlet adjustment device is located on the outside of the reflector 14 and moves relative to the reflector 14 to adjust the airflow. The air volume at the exhaust port; In another embodiment, the air fryer includes a body and a fryer assembly that can be pulled out and placed along the body. When the fryer assembly is placed in the body, the fryer assembly and the body cooperate to form a cooking cavity. The body is provided with a reflector 14 located above the cooking cavity. The reflector 14 is recessed on the side facing the cooking cavity to form a groove to accommodate the fan 4 and the heating element. The exhaust port is located on the reflector 14. The motor 1 is located on the side of the reflector 14 facing away from the cooking cavity. The air outlet adjustment device is located on the outside of the reflector 14 and moves relative to the reflector 14 to adjust the air volume at the exhaust port.

[0061] In this application, the fan 4 used to blow air into the cooking cavity and the unidirectional drive component 2 used to drive the air outlet adjustment device share a single motor 1. Compared with the prior art, this reduces the number of motors used, lowers the cost of adding a motor and related hardware costs such as mounting brackets and circuit control components, and results in a more compact structure, saving space required for additional motors and related components, making the internal layout more rational and contributing to the miniaturization of the air fryer. From another perspective, since there is no need to add an additional motor to drive the unidirectional drive component 2, potential mechanical and electrical failure points are also reduced, lowering the possibility of air fryer malfunctions due to motor or circuit problems and improving the reliability of the air fryer. Moreover, since the fan 4 and the unidirectional drive component 2 share a single motor 1, the energy consumption of adding an additional motor is avoided, reducing the overall power consumption of the air fryer, improving the product's energy efficiency ratio, and conforming to the energy-saving trend. Furthermore, the fan 4 drive and airflow adjustment function switching are integrated into a single motor 1 drive. The different states of the airflow adjustment device are switched by the forward and reverse rotation of motor 1. The control logic is relatively simple, reducing the requirements and costs for control system development, and improving the integration and intelligence level of the product functions. In addition, the airflow adjustment device in this application can accurately adjust the airflow from the exhaust port according to the forward and reverse rotation of motor 1, ensuring the stability of temperature and humidity within the cooking cavity during cooking, thereby improving the stability and consistency of the cooking effect.

[0062] The unidirectional drive component in this application includes, but is not limited to, the following implementation methods:

[0063] Implementation Method 1: This implementation method is not illustrated. In this implementation method, the unidirectional drive assembly includes a pawl and a ratchet that engages with the pawl. The ratchet has several ratchet teeth on its outer circumference. When the pawl engages with the ratchet teeth, the pawl's swinging motion drives the ratchet to rotate. The output shaft of the ratchet is linked to the air outlet adjustment device through a transmission mechanism, so that the air outlet adjustment device can be activated when the ratchet rotates. Specifically, when the motor drives the fan to rotate forward, the pawl's swinging direction is opposite to the inclination direction of the ratchet teeth on the ratchet. The pawl will slide across the ratchet teeth and cannot engage in the tooth grooves. Therefore, the pawl separates from the ratchet teeth, the ratchet does not rotate, and the air outlet adjustment device does not activate. When the motor drives the fan to rotate in reverse, the motor drives the pawl to swing around its swing axis. The pawl's swinging direction is consistent with the inclination direction of the ratchet teeth, allowing the pawl to smoothly engage in the ratchet's tooth grooves. At this time, the pawl pushes the ratchet to rotate, and the ratchet drives the air outlet adjustment device to activate through the transmission mechanism, thereby adjusting the airflow at the exhaust port.

[0064] Implementation Method Two: (e.g.) Figure 2 , Figure 3 , Figures 5 to 9As shown, the unidirectional drive assembly 2 includes a unidirectional bearing 21 and at least one transmission gear 22 mounted on the unidirectional bearing 21. When the motor 1 drives the fan 4 to rotate forward, the transmission gear 22 does not rotate under the action of the unidirectional bearing 21. When the motor 1 drives the fan 4 to rotate in reverse, the transmission gear 22 rotates under the action of the unidirectional bearing 21. This second embodiment uses the cooperation of the unidirectional bearing 21 and the transmission gear 22 to achieve unidirectional transmission. The two can be compactly arranged between the motor 1 and the air outlet adjustment device, eliminating the need for an additional large transmission mechanism and reducing space occupation. Moreover, compared with other transmission mechanisms, the cooperation of the unidirectional bearing 21 and the transmission gear 22 can reduce structural complexity, improve reliability, and reduce failure points. Furthermore, the stable cooperation of the unidirectional bearing 21 and the transmission gear 22 can effectively ensure that the air outlet adjustment device accurately switches states when the motor 1 drives the fan 4 to rotate forward and in reverse, ensuring cooking effect. In addition, the cooperation of the unidirectional bearing 21 and the transmission gear 22 achieves smooth power transmission, which can reduce vibration and impact during the entire transmission process, reduce operating noise, and improve the user experience.

[0065] Specifically, the one-way bearing 21 includes an outer ring, an inner ring, and rolling elements disposed within the inner ring. The outer ring is embedded inside the transmission gear 22. When the motor 1 drives the fan 4 to rotate forward, the rolling elements rotate relative to the outer ring, while the outer ring remains stationary, and the transmission gear 22 does not rotate. When the motor 1 drives the fan 4 to rotate in reverse, the rolling elements wedge into the gap between the outer and inner rings, thereby generating significant friction and achieving self-locking. The outer ring rotates with the motor 1, thereby actuating the airflow adjustment device.

[0066] In this second embodiment, the arrangement of the one-way bearing can be any one of the following embodiments:

[0067] Example 1: This example is not illustrated. In this example, a one-way bearing is mounted on the motor shaft. This example directly mounts the one-way bearing on the motor shaft, eliminating the need for additional structures (such as additional shafts, brackets, or connectors) and installation space to fix the bearing. This allows for a more compact transmission system, contributing to the miniaturization of the air fryer. Furthermore, directly mounting the bearing on the motor shaft reduces intermediate transmission links, minimizing energy loss caused by multi-stage transmission and improving system transmission efficiency. This allows the motor's output power to be more effectively transmitted to the fan and airflow adjustment device. Moreover, due to the compact structure and reduced intermediate links, the entire one-way transmission system operates more stably, with reduced vibration and noise. This not only improves the user experience but also helps extend the air fryer's lifespan. Additionally, directly mounting the bearing on the motor shaft allows for faster response to the motor's forward and reverse rotation commands, enabling rapid start and stop. This improves the dynamic performance and response speed of the airflow adjustment device, adapting to different airflow adjustment modes under different cooking programs and ensuring optimal cooking results.

[0068] In this embodiment 1, the one-way bearing and the motor can be matched using any of the following examples:

[0069] Example 1: The motor has only one output shaft, and the one-way bearing and the fan are both driven by the same output shaft.

[0070] Example 2: The motor has two output shafts, namely the first output shaft and the second output shaft. The fan is driven by the first output shaft, and the one-way bearing is driven by the second output shaft.

[0071] Example 2: As Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the one-way drive assembly 2 has a first rotating shaft 23 parallel to the motor shaft 101, and a one-way bearing 21 is fitted onto the first rotating shaft 23. In this embodiment 2, the one-way bearing 21 is fitted onto the first rotating shaft 23 parallel to the motor shaft 101. In practical applications, the position of the one-way bearing 21 and its transmission components can be flexibly adjusted according to the overall structure and spatial layout requirements of the product, which helps to optimize internal space and improve space utilization. In this embodiment 2, the load of the one-way bearing 21 and its related components is borne by the first rotating shaft 23, rather than acting directly on the motor shaft 101. This arrangement helps to reduce the load and wear on the motor shaft 101, reduce the risk of deformation of the motor shaft 101 due to overload, improve the reliability and service life of the motor 1, and thus improve the stability and reliability of the entire one-way transmission system. Moreover, the parallel arrangement of the first rotating shaft 23 and the motor shaft 101 can reduce the vibration and impact caused by the direct connection of the one-way bearing 21 to the motor shaft 101, making the entire one-way transmission system run more smoothly, reducing noise and vibration levels, and improving the user experience. Furthermore, as an intermediate link in power transmission, the first rotating shaft 23 can be designed and adjusted according to actual needs to achieve more precise speed control. From another perspective, placing the unidirectional drive component 2 on the first rotating shaft 23, which is parallel to the motor shaft 101, allows the unidirectional drive component 2 to be designed and manufactured as an independent module, and to be modularly assembled with the first rotating shaft 23, thereby improving production and assembly efficiency.

[0072] In this embodiment 2, the power transmission between the motor 1 and the first rotating shaft 23 can be any of the following examples:

[0073] Example 3: This example 3 is not illustrated. In this example 3, a drive pulley is fitted on the motor shaft and a driven pulley is fitted on the first rotating shaft. When the motor drives the fan to rotate, the drive pulley drives the driven pulley to rotate through the synchronous belt, thereby driving the first rotating shaft to rotate.

[0074] Example 4: This example 4 is not illustrated. In this example 4, a drive sprocket is fitted on the motor shaft and a driven sprocket is fitted on the first rotating shaft. When the motor drives the fan to rotate, the drive sprocket drives the driven sprocket to rotate through the synchronous chain, thereby driving the first rotating shaft to rotate.

[0075] Example 5: such as Figures 1 to 6 As shown, a drive gear 3 is fitted on the motor shaft 101, and a driven gear 24 that meshes with the drive gear 3 is fitted on the first rotating shaft 23. When the motor 1 drives the fan 4 to rotate, the drive gear 3 drives the driven gear 24 to rotate, and the driven gear 24 drives the first rotating shaft 23 to rotate synchronously. The radius of the driven gear 24 is larger than the radius of the drive gear 3.

[0076] Example 5 uses a meshing transmission between the driving gear 3 and the driven gear 24 to transmit power from the motor 1 to the unidirectional drive assembly 2. This structure is simple and compact, reducing the space required for installation and contributing to the miniaturization of the entire machine. Furthermore, the direct meshing of the driving gear 3 and the driven gear 24 achieves power transmission without any intermediate flexible parts, resulting in minimal energy loss and high transmission efficiency. In Example 5, the radius of the driven gear 24 is larger than that of the driving gear 3, which reduces the rotational speed of the first shaft 23, making the operation of the unidirectional drive assembly 2 and the air outlet regulating device smoother. This reduces abnormal noise during operation and allows for precise control of the air outlet regulating device's movement, facilitating precise control of the exhaust port's opening and closing degree and achieving accurate adjustment of the exhaust volume.

[0077] As a specific implementation method in Example 5, such as Figure 3 and Figure 6 As shown, a drive gear 3 is mounted on the motor shaft 101. A driven gear 24 that meshes with the drive gear 3 is mounted on the outer sleeve of the first rotating shaft 23. A one-way bearing 21 is also mounted on the outer sleeve of the first rotating shaft 23. A transmission gear 22 is mounted on the outer sleeve of the one-way bearing 21. When the motor 1 drives the fan 4 to rotate forward, the motor 1 drives the first rotating shaft 23 to rotate through the drive gear 3 and the driven gear 24. The first rotating shaft 23 drives the rolling elements in the one-way bearing 21 to rotate. The rolling elements rotate relative to the outer ring, while the outer ring remains stationary. The transmission gear 22 does not rotate, and the air outlet adjustment device does not operate. When the motor 1 drives the fan 4 to rotate in reverse, the motor 1 drives the first rotating shaft 23 to rotate through the drive gear 3 and the driven gear 24. The rolling elements in the one-way bearing 21 self-lock, and the outer ring of the one-way bearing 21 rotates around the first rotating shaft 23, thereby driving the transmission gear 22 to rotate around the first rotating shaft 23. This, in turn, drives the air outlet adjustment device to operate through the subsequent transmission system.

[0078] As a preferred embodiment of this application, such as Figures 1 to 6As shown, the air outlet adjustment device includes a baffle 12 that blocks the exhaust port and a transmission mechanism linked to the baffle 12. When the motor 1 drives the fan 4 to reverse, the one-way drive component 2 drives the transmission mechanism to move, thereby moving the baffle 12 and adjusting the blocking area of ​​the exhaust port. In this embodiment, the transmission mechanism makes the movement of the baffle 12 smoother, reduces impact and vibration during movement, and lowers noise during operation. Moreover, through the linkage of the transmission mechanism, the movement of the baffle 12 can be precisely controlled, achieving precise adjustment of the exhaust port blocking area to meet the precise control of exhaust volume in different cooking modes.

[0079] The transmission mechanism and its movement in this embodiment can be constructed using any of the following embodiments:

[0080] Example 3: As Figures 1 to 6 As shown, the unidirectional drive assembly 2 includes a drive gear 5, and the transmission mechanism includes a first transmission component 8 and a second transmission component 9. When the motor 1 drives the fan 4 to rotate in the opposite direction, the drive gear 5 rotates to drive the first transmission component 8 to reciprocate linearly between a first position and a second position. When the first transmission component 8 switches from the second position to the first position, it drives the second transmission component 9 to move, and the wind deflector 12 adjusts the area of ​​the exhaust port being blocked. In this embodiment 3, the rotational motion of the drive gear 5 is switched to the linear reciprocating motion of the first transmission component 8. The transmission method is simple and efficient, which can improve the overall efficiency of the transmission system. Moreover, this motion method can precisely control the position of the first transmission component 8, ensuring accurate switching of the first transmission component 8 between the first position and the second position, thereby achieving precise adjustment of the exhaust port blocking area. The combination of the rotational motion of the drive gear 5 and the linear reciprocating motion of the first transmission component 8 provides a stable mechanical transmission, reducing instability factors caused by gaps or looseness between moving parts. In addition, the movement and coordination of the drive gear 5, the first transmission component 8 and the second transmission component 9 can make better use of the space inside the air fryer, make the cooperation between the various components closer, improve the space utilization rate, and also help to make the whole machine smaller.

[0081] As a preferred example under this embodiment 3, such as Figure 3 , Figure 6 and Figure 10 As shown, the drive gear 5 is sleeved on the outside of the second rotating shaft 6, and the cam 7 is sleeved on the second rotating shaft 6. When the drive gear 5 rotates, it drives the second rotating shaft 6 to rotate, thereby driving the cam 7 to rotate. One end of the first transmission member 8 is in contact with the outer periphery of the cam 7, so as to coordinate the switching of the near point and far point of the cam 7 during the rotation of the cam 7 and reciprocate linearly between the first position and the second position.

[0082] Furthermore, such as Figures 1 to 6As shown, the air fryer also includes a first reset member 10 for driving the first transmission component 8 to switch from the second position to the first position. The first reset member 10 can be, for example, a spring. By setting the first reset member 10, it is ensured that the first transmission component 8 can accurately return to its initial state after each action, avoiding mechanical failure or performance degradation caused by positional deviation, enhancing the stability and reliability of the air outlet adjustment device. Through the automatic reset function of the first transmission component 8, the accuracy of the transmission system is guaranteed, ensuring that the expected shielding area is achieved each time the exhaust port is adjusted, maintaining the control accuracy of temperature and humidity in the cooking cavity during the cooking process. Moreover, during the automatic reset process, the first reset member 10 can buffer the movement of the first transmission component 8, reducing impact and vibration, making the entire transmission system run more smoothly, and reducing the noise level. In addition, the setting of the first reset member 10 can also keep the first transmission component 8 in a state that can fit against the cam 7.

[0083] As a preferred example under this embodiment 3, such as Figure 3 and Figure 6 As shown, the first transmission component 8 is provided with a driving inclined surface 81, and the second transmission component 9 is provided with a mating inclined surface 91. When the first transmission component 8 switches from the second position to the first position, the driving inclined surface 81 abuts against the mating inclined surface 91 to drive the second transmission component 9 to move. The contact between the first transmission component 8 and the second transmission component 9 through the inclined surfaces enables smooth motion transmission, reduces impact and vibration, makes the movement of the second transmission component 9 more stable, and improves the operating efficiency of the entire transmission system. Moreover, the mating of the inclined surfaces reduces energy loss during the movement process, ensuring that power can be efficiently transmitted to the second transmission component 9, thereby improving the transmission efficiency of the system. In addition, the inclined surface mating enables effective motion transmission in a small space, which helps to optimize the spatial layout inside the air fryer, making the overall structure more compact and contributing to the miniaturization of the air fryer.

[0084] More specifically, the transmission mechanism also includes a slide rail 13, which is connected to the second transmission member 9 and the wind deflector 12 respectively. When the second transmission member 9 moves, it will drive the wind deflector 12 to move along the exhaust port through the slide rail 13, thereby changing the air volume of the exhaust port.

[0085] As a preferred example under this embodiment 3, such as Figure 3 and Figure 6 As shown, the air fryer also includes a second reset member 11 for maintaining the air deflector 12 in a tendency to close or open the exhaust vent. The second reset member 11 can be, for example, a spring. The second reset member 11 is configured to restore the air deflector 12 to its initial state when the air fryer switches cooking modes, preparing for the next adjustment of the exhaust vent, thus improving the stability and reliability of the exhaust vent adjustment.

[0086] Example 4: This example 4 is not illustrated. In this example 4, the transmission mechanism includes an output shaft that can be driven to rotate by a one-way drive component. The output shaft is used to drive the baffle to rotate in order to adjust the airflow at the exhaust port. Specifically, the output shaft is located on one side of the exhaust port in the height direction or on one side of the exhaust port in the length direction. When the motor drives the fan to rotate forward, the output shaft remains stationary under the action of the one-way drive component, and the baffle also remains stationary. When the motor drives the fan to rotate in reverse, the output shaft rotates under the action of the one-way drive component, thereby driving the baffle to rotate, thus opening and closing the exhaust port and adjusting the airflow.

[0087] Example 5: This example 5 is not illustrated. In this example 5, the transmission mechanism includes a spool that can be driven to rotate by a one-way drive component. The wind deflector is wound around the spool, and the spool is used to drive the wind deflector to wind up or unwind to adjust the air volume of the exhaust port.

[0088] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0089] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0090] The above descriptions are merely embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An air fryer, comprising a cooking chamber and a fan for supplying air into the cooking chamber, the cooking chamber having an exhaust port communicating with the outside atmosphere, characterized in that, The air fryer also includes a motor, a one-way drive assembly, and an air outlet adjustment device disposed at the exhaust port. The motor is connected to both the fan and the one-way drive assembly via a motor shaft. When the motor drives the fan to rotate forward, the one-way drive component does not drive the air outlet adjustment device to move. When the motor drives the fan to rotate in reverse, the one-way drive component drives the air outlet adjustment device to move to adjust the air volume at the exhaust port.

2. An air fryer according to claim 1, characterized in that, The one-way drive assembly includes a one-way bearing and at least one transmission gear sleeved on the one-way bearing. When the motor drives the fan to rotate forward, the transmission gear does not rotate under the action of the one-way bearing. When the motor drives the fan to rotate in reverse, the transmission gear rotates under the action of the one-way bearing.

3. An air fryer according to claim 2, characterized in that, The one-way bearing is mounted on the motor shaft.

4. An air fryer according to claim 2, characterized in that, The unidirectional drive assembly has a first rotating shaft parallel to the motor shaft, and the unidirectional bearing is fitted onto the first rotating shaft.

5. An air fryer according to claim 4, characterized in that, A drive gear is fitted on the motor shaft, and a driven gear that meshes with the drive gear is fitted on the first rotating shaft. When the motor drives the fan to rotate, the drive gear drives the driven gear to rotate, and the driven gear drives the first rotating shaft to rotate synchronously. The radius of the driven gear is larger than the radius of the drive gear.

6. An air fryer according to claim 1, characterized in that, The air outlet adjustment device includes a wind deflector that blocks the exhaust port and a transmission mechanism that is linked to the wind deflector. When the motor drives the fan to reverse, the one-way drive component drives the transmission mechanism to move, thereby moving the wind deflector and adjusting the area of ​​the exhaust port it blocks.

7. An air fryer according to claim 6, characterized in that, The unidirectional drive assembly includes a drive gear, and the transmission mechanism includes a first transmission component and a second transmission component. When the motor drives the fan to rotate in the opposite direction, the drive gear rotates to drive the first transmission component to reciprocate linearly between a first position and a second position. When the first transmission component switches from the second position to the first position, it drives the second transmission component to move. The wind deflector adjusts the area of ​​the exhaust port it covers.

8. An air fryer according to claim 7, characterized in that, The air fryer also includes a first reset component for driving the first transmission component to switch from the second position to the first position.

9. An air fryer according to claim 7, characterized in that, The first transmission component is provided with a driving inclined surface, and the second transmission component is provided with a mating inclined surface. When the first transmission component switches from the second position to the first position, the driving inclined surface abuts against the mating inclined surface to drive the second transmission component to move.

10. An air fryer according to claim 7, characterized in that, The air fryer also includes a second reset member for maintaining the air deflector in a tendency to close or open the exhaust vent.

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