Air fryer with replaceable pot and heat dissipation structure

Abstract

The application discloses an air fryer, which is characterized in that a vertical support and a guide rail are arranged on a base, a sliding seat drives a head to ascend and descend, the head is divided into an upper cavity (a cooling fan) and a lower cavity (a heating assembly), an annular air duct air outlet faces downward, cooling air flows along a pot wall, elastic members enable the head to ascend, a locking assembly locks an ascending position, and an unlocking assembly is linked to release the locking. A plurality of different capacity pot bodies can be replaced on the base. The design realizes quick ascending and locking of the head, pot bodies can be replaced without being separated, pollution and falling are avoided, active heat dissipation is realized to reduce internal and pot wall temperatures, and safety and service life are improved.

Description

Technical Field

[0001] This invention belongs to the field of air fryer technology, and particularly relates to an air fryer with a replaceable pot body and a heat dissipation structure. Background Technology

[0002] Air fryers, as kitchen appliances that use hot air circulation to cook food, are becoming increasingly popular due to their convenience and low-oil, healthy characteristics. Most commercially available air fryers currently use a fixed-capacity design with the pot and heating element integrated or fixedly connected, meaning their cooking capacity is not adjustable. When cooking small amounts of food, using a large-capacity pot wastes space and affects hot air circulation efficiency, potentially leading to uneven heating. Conversely, when cooking larger amounts of food, the pot's capacity becomes a limitation. To address this issue, some designs have emerged that allow for pot replacement, but this usually requires users to manually remove the entire heating element and place it on a countertop or other surface to change to a pot of different height. This process has significant drawbacks: First, improper placement of the removed heating element can easily lead to contamination with kitchen grease and dust, posing a hygiene hazard, and the heating components and internal structure may be affected by moisture or foreign objects, impacting performance or safety. Second, the detached heating element occupies countertop space and carries the risk of accidental damage or loss of parts. Third, the manual alignment and reinstallation process is cumbersome, resulting in a poor user experience. Furthermore, the frying bowl of an air fryer is directly heated during the heating process, causing the outer wall and handle to heat up rapidly and remain hot even after cooking, making it extremely easy for users to get burned when removing the bowl. While existing technologies employ methods such as adding insulation layers, using anti-scalding silicone sleeves, or creating natural convection holes in the handle for protection, insulation layers only passively slow down heat conduction and are not suitable for transparent bowls. Silicone sleeves are prone to overheating due to heat accumulation and cannot lower the outer wall temperature, and natural convection cooling is inefficient. All these methods fail to effectively solve the problem of burns caused by the high temperatures of the frying bowl and handle. Summary of the Invention

[0003] (a) Purpose of the invention To overcome the above shortcomings, the purpose of this invention is to provide an air fryer with a replaceable pot body and a heat dissipation structure, so as to solve the technical problems of existing air fryers, which have fixed pot body capacity, requiring the separation of the machine head when changing the pot body, which is cumbersome, poses hygiene and safety hazards, and the outer wall of the frying bucket and the handle are easy to burn users when the temperature is high after cooking.

[0004] (II) Technical Solution To achieve the above objectives, the technical solution provided in this application is as follows: An air fryer with automatic lifting and pot body recognition functions is characterized by comprising: a base having a horizontal platform and a vertical support on one side; a fixed bracket disposed within the vertical support; two vertical guide rails respectively disposed on both sides of the fixed bracket; a sliding seat slidably mounted on the guide rails; and a fryer head connected to the sliding seat, internally divided into an independent upper cavity and a lower cavity, the upper cavity being located radially outside the lower cavity, the lower cavity housing a heating element, the upper cavity housing a cooling fan, and the outer shell also having a ring-shaped first heat dissipation duct, the air inlet of which connects to the upper cavity, and the air outlet surrounding the upper cavity. Located at the lower end of the upper cavity, when the cooling fan is started, the cooling air is discharged downward from the air outlet through the first heat dissipation air duct and flows along the outer wall of the pot body; the elastic reset component is connected at both ends to the upper end of the fixed bracket and the sliding seat respectively; the locking component is movably installed on the sliding seat and is used to lock the sliding seat when it moves to a preset height; the unlocking component is movably installed on the fixed bracket and linked with the locking component. Under the action of external force, the locking component can be triggered to unlock, so that the sliding seat drives the machine head to move upward and reset under the drive of the elastic reset component; at least two pot bodies of different capacities can be placed interchangeably on the base and can be covered with the machine head.

[0005] By cooperating with the sliding base and guide rail, and through the linkage of the locking and unlocking components, the machine head can be quickly raised and lowered and automatically locked. Users can replace the pot without separating the machine head from the pot, simplifying the operation process and avoiding the risks of oil contamination, accidental drops, and lost parts caused by temporary placement of the machine head, thus improving ease of use and safety. At the same time, through the upper and lower chambers and the annular heat dissipation duct inside the machine head, the cooling fan actively introduces cooling airflow that flows downward along the outer wall of the pot, which can simultaneously dissipate heat from the internal electrical components of the machine head and the outer wall of the pot. This not only extends the service life of the equipment but also reduces the temperature of the outer wall of the pot after cooking, reducing the risk of burns.

[0006] In some embodiments, an identification component for identifying the size of the currently placed pot is provided between the machine head and the pot body, and the number of pot bodies is three; a second sensor is provided on each side of the machine head, namely the second sensor and the second sensor; wherein, a first sensor is provided on each of the two handles of the first pot body, the two sensors are arranged symmetrically at the center, and one of them corresponds to the position of the second sensor; a first sensor is provided on each of the two handles of the second pot body, the two sensors are arranged symmetrically at the center, and one of them corresponds to the position of the second sensor; a first sensor is provided on each of the two handles of the third pot body, and the two sensors correspond one-to-one with the second sensor and the second sensor.

[0007] By differentiating the layout of the first sensor on the handle of different pots and combining the signal detection of the second sensor on both sides of the machine head, the control system can uniquely determine the current pot size based on the sensor signal combination and automatically call the corresponding preset cooking program. This eliminates the need for manual selection by the user, simplifies the operation steps, avoids poor cooking results caused by pot incompatibility with the program, and improves the intelligence and accuracy of the equipment. At the same time, the centrally symmetrical arrangement of the sensors eliminates the need to distinguish the direction when placing the pot, further enhancing the user experience.

[0008] In some embodiments, the fixed bracket is provided with a plurality of lock holes spaced vertically along its upper edge; the locking assembly includes a first elastic element and a locking block. The first elastic element is disposed on the sliding seat and its two ends abut against the sliding seat and the locking block respectively. When the sliding seat slides to a preset height, the first elastic element pushes the locking block to insert into the corresponding lock hole.

[0009] With the cooperation of the first elastic element and the locking block, the machine head can be automatically locked when it is pressed down to the appropriate position without the need for additional operation by the user, which simplifies the height adjustment process; the overall structure is compact and the operation is reliable, ensuring the stable locking of the machine head at different height positions.

[0010] In some embodiments, the sliding seat has a receiving cavity on its side, a first elastic member is received in the receiving cavity, a locking block abuts against the first elastic member and is confined in the receiving cavity, and the end of the locking block can extend out or retract into the receiving cavity under the elastic force of the first elastic member and the action of external force.

[0011] In some embodiments, the invention further includes: a plurality of heat-insulating jackets, each respectively fitted onto the outside of a corresponding pot body; the heat-insulating jackets wrap around the bottom of the pot body and extend upward on both sides; and the sides of the jackets have insert grooves for inserting the handles at the corresponding handle positions; after the handles are inserted, there is a gap between the handles and the insert grooves, which forms a second heat dissipation duct for guiding the airflow discharged from the first heat dissipation duct to flow around the handles and then discharge; and the heat-insulating jackets have a plurality of first exhaust holes for discharging the airflow that flows through the second heat dissipation duct and flows into the interior of the heat-insulating jackets along the outer wall of the pot body.

[0012] An insulating jacket is added to the outside of the pot body, and a second heat dissipation duct is constructed. This allows the cooling airflow discharged from the first heat dissipation duct to be guided into the gap between the handle and the embedded groove, and then flows around the handle before being discharged from the first exhaust hole. The airflow is guided into the embedded groove by the baffle ribs, ensuring that the handle area receives sufficient cooling. This effectively reduces the high temperature of the handle after cooking and reduces the risk of burns when the user takes out the pot. At the same time, the insulating jacket itself also plays a role in physical heat insulation. Working together with the active heat dissipation duct, it achieves comprehensive anti-scalding protection for the pot body and handle area.

[0013] In some embodiments, wind-blocking ribs are provided on the upper sides of the heat insulation jacket at positions corresponding to the embedded grooves, for guiding airflow into the embedded grooves.

[0014] In some embodiments, the unlocking component includes: an unlocking button, a second elastic element, and a push rod; the unlocking button is movably mounted on the upper end of the vertical support, with its lower end abutting against the upper end of the second elastic element, and the lower end of the second elastic element abutting against the fixed bracket; the upper end of the push rod is connected to the unlocking button, and its lower end extends vertically along the fixed bracket, with a plurality of unlocking protrusions spaced vertically along the upper edge of the push rod, each unlocking protrusion corresponding to a lock hole; when the unlocking button is pressed, the push rod moves downward, and the unlocking protrusions push the lock block inserted into the corresponding lock hole to disengage from the lock hole and unlock.

[0015] Pressing the unlock button triggers the lock block to disengage from the keyhole, enabling one-click unlocking. The operation is convenient and effortless. Multiple unlocking protrusions on the push rod correspond one-to-one with each keyhole. Regardless of the current height of the sliding block, pressing the unlock button with a small stroke will cause the corresponding unlocking protrusion to push the corresponding lock block out, allowing for quick unlocking.

[0016] In some embodiments, the ends of the lock block and the unlocking protrusion that come into contact with each other are provided with mutually cooperating inclined structures, which are located on the upper and lower sides.

[0017] The upper and lower sides of the end where the locking block and the unlocking protrusion contact each other are equipped with mutually cooperating inclined structures. When pressing to unlock, the upper and lower inclined surfaces efficiently convert the pressing force into lateral retraction force, further improving the unlocking response speed. At the same time, even if the locking block contacts the unlocking protrusion during the upward process after the machine head is unlocked, it can automatically move aside with the help of the inclined surfaces. The entire lifting and lowering process is smooth and reliable without jamming or obstruction. The entire mechanism is simple and practical, combining operational sensitivity and long-term stability.

[0018] The upper and lower sides of the end where the locking block and the unlocking protrusion contact each other are provided with mutually cooperating inclined structures. When pressing to unlock, the upper and lower inclined surfaces efficiently convert the pressing force into lateral retraction force, further improving the unlocking response speed.

[0019] In some embodiments, the device further includes: a heat insulation cover disposed inside the housing of the head unit, a mounting bracket sleeved on the outside of the heat insulation cover, and an air guide cover sleeved on the outside of the mounting bracket; the heat insulation cover divides the interior of the housing into an upper cavity and a lower cavity, the heating component is disposed below the heat insulation cover, and the cooling fan is disposed above the heat insulation cover and connected to the mounting bracket; the mounting bracket has openings at its upper end and side, and the air guide cover has an opening at its upper end corresponding to the opening at the upper end of the mounting bracket, and the two together form a first heat dissipation air duct, which connects to the opening on the side of the mounting bracket; wherein, a plurality of air guide ribs are provided circumferentially at intervals on the inner sidewall of the air guide cover, and each air guide rib extends from the air inlet of the first heat dissipation air duct towards the air outlet; the edges of the air guide cover and the mounting bracket extend beyond the heat insulation cover, and the edge of the mounting bracket has a plurality of second exhaust holes corresponding to the air outlet of the first heat dissipation air duct.

[0020] The heat insulation cover isolates the cooling fan from the heating components, reducing the impact of heat conduction on electrical components; the mounting bracket and the air guide cover form a continuous and sealed first heat dissipation air duct to avoid airflow turbulence; the air guide ribs on the inner side of the air guide cover guide the airflow evenly in the circumferential direction to ensure balanced heat dissipation on the outer wall of the pot; the air guide cover and the edge of the mounting bracket extend beyond the heat insulation cover, and the second exhaust vents ensure smooth exhaust of cooling airflow, thereby effectively reducing the pot body temperature and improving safety and service life.

[0021] In some embodiments, it further includes: a head mounting bracket, one end of which is connected to a sliding seat and the other end of which is connected to a heat shield, and the shape of the head mounting bracket is adapted to the edge of the heat shield.

[0022] The head fixing bracket ensures the connection strength and positional accuracy between the head and the sliding seat. At the same time, the shape of the fixing bracket is adapted to the edge of the head shell, making the overall structure more compact and stable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the air fryer with a replaceable pot body and heat dissipation structure of the present invention (black arrows indicate the airflow direction). Figure 2 yes Figure 1 A cross-sectional view along the AA direction; Figure 3 yes Figure 2 A magnified view of part I in the middle; Figure 4 This is a schematic diagram of the structure of the air fryer with a replaceable pot body and heat dissipation structure of the present invention, showing the placement of the second pot body; Figure 5 This is a schematic diagram of the structure of the air fryer with a replaceable pot body and heat dissipation structure of the present invention, showing the placement of the third pot body; Figure 6 This is a diagram showing the third pot body of the air fryer with a replaceable pot body and heat dissipation structure of the present invention being placed on the base. Figure 7 This is a first-view structural diagram of the assembly of the base and the head in the air fryer with a replaceable pot body and heat dissipation structure according to the present invention. Figure 8 This is a second-view structural diagram of the assembly of the base and the head in the air fryer with a replaceable pot body and heat dissipation structure according to the present invention. Figure 9 This is an exploded view of the air fryer head with a replaceable pot body and heat dissipation structure according to the present invention; Figure 10 This is an assembly diagram of the heat insulation cover and the head fixing frame in the air fryer with replaceable pot body and heat dissipation structure of the present invention. Figure 11 This is an assembly diagram of the base and the head fixing frame in the air fryer with replaceable pot body and heat dissipation structure of the present invention. Figure 12 yes Figure 11 Cross-sectional view along the BB direction; Figure 13 This is a structural diagram of the front of the detachable outer shell of the base in the air fryer with a replaceable pot body and heat dissipation structure of the present invention. Figure 14 This is a schematic diagram of the structure of the back of the base of the air fryer with replaceable pot body and heat dissipation structure of the present invention. Figure 15 This is a schematic diagram of the vertical guide rail and sliding seat assembled into the base in the air fryer with a replaceable pot body and heat dissipation structure of the present invention. Figure 16 This is a schematic diagram of the structure of the first pot of the air fryer with a replaceable pot body and heat dissipation structure of the present invention, in which heat insulation sheets are installed on the heat insulation jacket. Figure 17 This is a schematic diagram of the structure of the first pot body of the air fryer with a replaceable pot body and heat dissipation structure of the present invention, after the heat insulation sheet of the heat insulation outer jacket has been removed. Figure 18 This is a schematic diagram of the heat insulation jacket in the air fryer with a replaceable pot body and heat dissipation structure of the present invention; Figure 19 This is a schematic diagram of the air guide shroud in the air fryer with a replaceable pot body and heat dissipation structure of the present invention. Figure label: 1. Base; 101. Horizontal platform surface; 1011. Horizontal guide rail; 102. Vertical support; 2. Fixed bracket; 21. Locking hole; 22. Second limiting groove; 3. Vertical guide rail; 4. Sliding seat; 401. Receiving cavity; 5. Head unit; 501. Upper cavity; 502. Lower cavity; 503. Head unit housing; 504. Heat insulation cover; 6. Heating component; 7. Cooling fan; 8. First heat dissipation duct; 9. Elastic reset component; 10. Locking component; 1001. First elastic component; 1002. Locking block; 11. Unlocking component; 1101. Unlocking button; 1102. 11. Second elastic element; 1103. Push rod; 11031. Unlocking protrusion; 12. Pot body; 1201. First pot body; 1202. Second pot body; 1203. Third pot body; 13. Handle; 36. Heat insulation jacket; 3601. First exhaust vent; 3602. Wind baffle; 3603. First limiting groove; 3604. Embedded groove; 37. Second heat dissipation air duct; 38. Head unit fixing bracket; 39. Mounting bracket; 3901. Second exhaust vent; 40. Air guide cover; 401. Air guide rib; 41. Decorative cover; 42. Heat insulation sheet; 43. Circulating fan. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] The present invention provides an air fryer with a replaceable pot body 12 and a heat dissipation structure, comprising: a base 1, a vertical guide rail 3, a sliding seat 4, a heat-generating head 5, an elastic reset member 9, a locking component 10, an unlocking component 11, and at least two pot bodies 12.

[0026] Specifically, the base 1, serving as the support platform for the entire device, is typically made of heat-resistant plastic or metal sheet, and has a horizontal platform 101 and a vertical support 102 located on one side. A fixed bracket 2 is housed within this vertical support 102. Two vertical guide rails 3 are provided, vertically fixed to both sides of the fixed bracket 2, and can be connected to the base 1 by screws or integral molding. The sliding seat 4 has sliding engagements with the two vertical guide rails 3 on both sides; that is, the sliding seat 4 is equipped with grooves or pulleys, allowing it to move smoothly up and down along the vertical tracks set by the vertical guide rails 3. The machine head 5 is fixedly mounted on the sliding seat 4 and rises and falls together with it. The machine head 5 is connected to an external power source via a flexible power cord for power supply; this flexible power cord is reasonably laid out along the vertical guide rails 3 with sufficient slack to ensure that the machine head 5 is not pulled during lifting and lowering, while also preventing wire tangling or wear, ensuring electrical safety.

[0027] The internal structure of the heat exchanger 5 is divided into an independent upper cavity 501 and a lower cavity 502. The upper cavity 501 is located radially outside and surrounds the lower cavity 502, and the lower ends of the two cavities are coplanar. The lower cavity 502 houses a heating element 6 for generating hot air required for cooking; the upper cavity 501 houses a cooling fan 7 and a motor that drives the cooling fan 7 to actively introduce cooling airflow. An annular first heat dissipation duct 8 is also provided, with its air inlet surrounding the cooling fan 7 and connecting to the upper cavity 501, and its air outlet surrounding the lower end of the lower cavity 502. When the cooling fan 7 is activated, heat dissipation occurs inside the heat exchanger 5, and simultaneously, cooling air is discharged downwards from the air outlet through the first heat dissipation duct 8 and flows along the outer wall of the pot body 12, actively dissipating heat from the pot body 12.

[0028] As the core heating component, the heating element includes: a heating tube and a circulating fan 43.

[0029] Specifically, the head unit 5 includes: a head unit housing 503, inside which is a heat insulation cover 504. The heat insulation cover 504 is made of a high-temperature resistant material (such as metal) and is fixed to the inside of the head unit housing 503 by screws or clips, dividing the inside of the housing into an independent upper cavity 501 and a lower cavity 502. The circulating fan 43 and the heating tube are located below the heat insulation cover 504, that is, inside the lower cavity 502. The wiring terminal of the heating tube extends through a wire hole opened on the heat insulation cover 504 to the upper cavity 501 for electrical connection with the power cord inside the upper cavity 501.

[0030] Mounting bracket 39 is fitted onto the outside of heat insulation cover 504, and its overall shape is a hollow boss, fitting around the outer periphery of heat insulation cover 504. Cooling fan 7 is positioned above heat insulation cover 504 and inside mounting bracket 39. Motor is located at the top of mounting bracket 39, and is connected to cooling fan 7 and the circulating fan 43 below via a drive shaft, which is fixed to heat insulation cover 504 by bearings. An opening is provided on the upper surface of mounting bracket 39. When cooling fan 7 operates, external cold air entering the upper cavity 501 flows into mounting bracket 39 through this opening. Multiple openings are also provided on the sides of mounting bracket 39, connecting to the air inlet of the first heat dissipation duct 8.

[0031] The air guide shroud 40 has a ring-shaped structure and matches the mounting bracket 39, fitting around the outside of the mounting bracket 39. Its upper end has an opening corresponding to the upper opening of the mounting bracket 39. The air guide shroud 40 and the mounting bracket 39 form a ring-shaped first heat dissipation duct 8. The lower end of the mounting bracket 39 extends to a position coplanar with the lower end of the heat insulation cover 504, and its lower edge has multiple second exhaust holes 3901 that connect with the air outlet of the first heat dissipation duct 8. The cooling airflow generated by the cooling fan 7 is discharged downwards through the first heat dissipation duct 8 and flows along the outer wall of the pot body 12, achieving active heat dissipation.

[0032] Specifically, one end of the elastic reset member 9 is connected to the upper end of the fixed bracket 2, while the other end is connected to the sliding seat 4. The elastic reset member 9 is stretched or twisted when the sliding seat 4 moves downward, thus storing elastic energy. The locking assembly 10 is movably mounted on the sliding seat 4, and can automatically lock the sliding seat 4 at a predetermined height when the sliding seat 4 drives the head 5 to move to that position. The unlocking assembly 11 is movably mounted on the fixed bracket 2 and is linked with the locking assembly 10; when the user applies external force, the unlocking assembly 11 triggers the locking assembly 10 to release the locking of the sliding seat 4. In this way, driven by the elastic energy stored in the elastic reset member 9, the sliding seat 4 automatically drives the head 5 to move quickly upward to the uppermost end of the vertical guide rail 3, thereby raising the head 5 and making room for pots 12 of different heights. The at least two pots 12 can be placed on the base 1. They have different depths or heights, but the shape of their upper openings matches the lower contour of the head 5 to ensure sealed cooking. With the above structure, when it is necessary to change the pot body 12, the user first operates the unlocking component 11, causing the machine head 5 to automatically rise to the preparatory position at the top of the guide rail. Then, the pot body 12 can be safely removed or placed in, without being limited by the height of the pot body 12. After placing the required pot body 12, press the machine head 5 down to the appropriate position, and the locking component 10 will automatically lock it, thus stably covering the pot body 12. Alternatively, the machine head 5 can be adjusted to the corresponding height first, and then the corresponding pot body 12 can be placed in. The entire process achieves flexible, convenient, and safe changes in the capacity of the pot body 12.

[0033] To achieve automatic identification of the pot body 12's specifications and intelligent adaptation to the cooking program, preferably, this air fryer is equipped with corresponding sensing devices on the pot body 12 and the head unit 5. Specifically, an identification component for identifying the specifications of the currently placed pot body 12 is provided between the head unit 5 and the pot body 12. A first sensor, such as a magnet or RFID tag, is installed at a specific position on the handle 13 of each pot body 12. A second sensor, such as a Hall sensor or RFID reader, is installed on both sides below the head unit 5 at positions corresponding to the handles 13 of the pot body 12.

[0034] Specifically, this embodiment includes three different capacity pot bodies 12. Two second sensors on either side of the machine head 5 are positioned on the same horizontal line and are labeled A and B respectively, used to sense the positions of the left and right handles 13. The first sensors of the three pot bodies 12 are arranged differently to achieve unique identification. The first sensor of the first pot body 1201 is provided in two parts, which are centrally symmetrically arranged on the two handles 13, and one of the first sensors corresponds to the position of the second sensor A.

[0035] The second pot body 1202 has two first sensors, which are centrally symmetrically arranged on the two handles 13, and one of the first sensors corresponds to the position of the second sensor B.

[0036] The third pot body 1203 has two first sensors, which are respectively located on its two handles 13 and correspond one-to-one with the second sensors A and B.

[0037] When the user places the pot body 12 into the pot and presses down the machine head 5 to the closed position, the second sensors A and B on the machine head 5 will detect whether there is a first sensor signal at the corresponding handle 13 position. Based on the signal combination status of the sensors on both sides (e.g., signal on the left, no signal on the right; no signal on the left, signal on the right; signal on both sides), the control system can uniquely determine which size of pot body 12 is currently being used. After identification, the device automatically calls the pre-stored cooking temperature and time program that is best matched to the pot body 12. The user does not need to manually select or set anything, achieving an intelligent operating experience of "identify upon placement, start cooking upon closing." This design not only improves the convenience and accuracy of use but also avoids the problem of poor cooking results due to incompatibility between the pot body 12 and the program. Furthermore, the two first sensors on the handle 13 of the same pot body 12 are arranged symmetrically, eliminating the need to distinguish the orientation when placing the pot body 12, further simplifying user operation.

[0038] Furthermore, in one specific embodiment, the fixed bracket 2 has a plurality of lock holes 21 spaced vertically along its sides. The locking assembly 10 includes a first elastic member extending laterally and a locking block 1002. The first elastic member is disposed on the sliding seat 4 and its two ends abut against the sliding seat 4 and the locking block 1002 respectively. The continuous elastic force it provides can push the locking block 1002 to move outward and insert it into a corresponding lock hole 21 on the side of the fixed bracket 2, thereby achieving mechanical locking. When the sliding seat 4 moves downward to a preset height corresponding to the corresponding lock hole 21, the first elastic member pushes the locking block 1002 into the corresponding lock hole 21, completing automatic locking.

[0039] Based on this, the sliding seat 4 has a receiving cavity 401 on its side, in which the first elastic element is housed. The locking block 1002 is entirely confined within the receiving cavity 401, with one end abutting against the first elastic element, and the other end extending out or retracting into the receiving cavity 401 under the elastic force of the first elastic element and external force. Specifically, the first elastic element is a spring, and the locking block 1002 is made of wear-resistant metal or high-strength engineering plastic.

[0040] Regarding the unlocking component 11, one specific implementation includes: an unlocking button 1101, a second elastic element 1102, and a push rod 1103. The unlocking button 1101 is movably installed on the upper end of the vertical support 102, with its lower end extending into the interior of the vertical support 102. The second elastic element 1102 is disposed within the vertical support 102, with its upper end abutting against the unlocking button 1101 and its lower end fixed to the upper end of the fixed bracket 2 via a fixing post or fixing hole. The push rod 1103 is right-angled, with its upper end connected to the unlocking button 1101 and its lower end extending along the height of the fixed bracket 2. The push rod 1103 has multiple unlocking protrusions 11031 spaced vertically on one side of the corresponding fixed bracket 2, with each unlocking protrusion 11031 corresponding to a lock hole 21. When the user presses the unlock button 1101, it moves downward against the resistance of the second elastic element 1102, and the push rod 1103 moves downward simultaneously. The unlocking protrusion 11031 pushes the lock block 1002 inserted into the corresponding lock hole 21 out of the lock hole 21, thus unlocking the device. After the user releases the button, the second elastic element 1102 causes the unlock button 1101 to automatically reset. Specifically, the fixed bracket 2 has a second limiting groove 22 on one side corresponding to the push rod 1103 for the push rod 1103 to be inserted into, which can limit the vertical movement direction of the push rod 1103.

[0041] The following is the process of adjusting and unlocking the nose cone height: To adjust the head 5 from its initial position to a lower height, first press the unlock button 1101. The push rod 1103 moves down, causing the unlocking protrusion 11031 to descend. The protrusion enters and occupies the corresponding lock hole 21. At this time, the locking block 1002, under the pressure of the fixed bracket 2 and the unlocking protrusion 11031, overcomes the elastic force of the first elastic element, disengages from the lock hole 21, and retracts into the receiving cavity 401. During the adjustment process, keep the unlock button 1101 pressed. Because the lock hole 21 is occupied by the protrusion, the locking block 1002 cannot be inserted into any lock hole 21, so the head 5 can move freely downward. When the head 5 moves to approximately the desired predetermined height, release the unlock button 1101. The push rod 1103 returns to its original position upward under the action of the second elastic element 1102, and the protrusion exits the lock hole 21. If the locking block 1002 is aligned with a lock hole 21, the first elastic element immediately pushes the locking block 1002 into that lock hole 21, completing the automatic locking. If the locking block 1002 is not yet aligned with any locking hole 21, the height of the machine head 5 is further finely adjusted and moved until a certain locking hole 21 is accurately aligned with the locking block 1002. Then, the first elastic element immediately pushes the locking block 1002 into the locking hole 21 to complete the locking.

[0042] To reset the machine head 5 from its current locked position to the top, press the unlock button 1101. The push rod 1103 moves the unlocking protrusion 11031 downwards, causing the protrusion to press the locking block 1002 out of the lock hole 21 and retract into the receiving cavity 401. At the same time, the protrusion occupies the position of the lock hole 21. Keeping the unlock button 1101 pressed, the sliding seat 4, driven by the elastic reset member 9, moves the machine head 5 smoothly upwards. The locking block 1002 rises along the vertical guide rail 3 with the sliding seat 4. When passing through each lock hole 21, it cannot be inserted because the lock hole 21 is occupied by the protrusion, ensuring unobstructed movement throughout the ascent. After the machine head 5 reaches the top, release the unlock button 1101. The push rod 1103 resets, the protrusion exits the lock hole 21, and the locking block 1002 pops out under the action of the first elastic member. The machine head 5 then stops stably at the top ready position, making it convenient for the user to change the pot body 12.

[0043] During the above lifting process, the upper and lower sides of the locking block 1002 and the unlocking protrusion 11031 are provided with mutually cooperating inclined structures. When pressing to unlock, the inclined surfaces efficiently convert the pressing force into a lateral retraction force, so that the locking block 1002 can smoothly disengage from the lock hole 21. With the help of the inclined surfaces to automatically make way, it is ensured that there is no jamming throughout the process and the operation is smooth and reliable.

[0044] Furthermore, the ends of the locking block 1002 that contact the unlocking protrusion 11031 are provided with mutually cooperating inclined structures, which are located on the upper and lower sides. Specifically, the locking block 1002 is specially machined to form a second inclined surface at the lower end of the unlocking component 11. Through the interaction of the inclined surfaces, when the end of the locking block 1002 contacts the unlocking protrusion 11031 during the up-and-down movement of the sliding seat 4, the force is converted into a force that forces the locking block 1002 to retract laterally, thereby causing the end of the locking block 1002 to retract into the receiving cavity 401, making the entire up-and-down movement process smoother.

[0045] For the elastic reset element 9 that provides the reset force, a coil spring is a preferred and reliable implementation. It has a compact structure, can be mounted around an axis fixed to a mounting base 2, with one end fixed to the mounting base and the other end connected to a sliding seat 4, storing and releasing energy through torsion.

[0046] Preferably, a plurality of air guide ribs 401 are provided circumferentially on the inner sidewall of the air guide shroud 40. Each air guide rib 401 extends spirally or arc-shaped from the air inlet of the first heat dissipation air duct 8 to the air outlet, so as to guide the cooling airflow generated by the cooling fan 7 to be evenly distributed and reduce turbulence.

[0047] In addition, the air fryer also includes a head mounting bracket 38, one end of which is fixedly connected to the sliding seat 4 by bolts, and the other end is fixedly connected to the upper end or side wall of the heat insulation cover 504 by bolts. Correspondingly, the mounting bracket 39 has an clearance notch at the connection position between the head mounting bracket 38 and the heat insulation cover 504 to facilitate bolt installation. After the head mounting bracket 38 and the heat insulation cover 504 are connected, the clearance notch is covered by a removable decorative cover 41 to achieve shielding and sealing.

[0048] Furthermore, to reduce the high temperature of the outer wall of the pot body 12 and the handle 13 after cooking, this air fryer also includes multiple heat-insulating jackets 36, each fitted onto the corresponding outer surface of the pot body 12. The heat-insulating jacket 36 covers the bottom of the pot body 12 and extends upwards on both sides. Embedding grooves 3604 are provided on both sides corresponding to the handle 13 positions for embedding the handle 13. After the handle 13 is embedded, a gap is left between it and the embedding groove 3604. This gap forms a second heat dissipation duct 37, used to guide the airflow discharged from the first heat dissipation duct 8, allowing it to flow around the handle 13 before being discharged. Multiple first exhaust holes 3601 are provided on the heat-insulating jacket 36 to allow airflow flowing through the second heat dissipation duct 37 and along the outer wall of the pot body 12 into the interior of the heat-insulating jacket 36 to be discharged outwards. In addition, the upper ends of both sides of the heat insulation jacket 36 are provided with wind-blocking ribs 3602 corresponding to the positions of the embedding grooves 3604, which are used to guide the airflow into the embedding grooves 3604 and prevent the airflow discharged from the first heat dissipation duct 8 from directly escaping outward, ensuring that the handle 13 area receives sufficient cooling effect. The heat insulation jacket 36 is made of an elastic material, such as silicone or TPE (thermoplastic elastomer), which has good flexibility and heat insulation performance. During installation, the two side walls can be pried open outward so that the handle 13 can be smoothly embedded into the embedding grooves 3604. After being put on, the heat insulation jacket 36 relies on its own elasticity to tightly fit the outer wall of the pot body 12, which not only ensures the airtightness of the second heat dissipation duct 37, but also facilitates user installation and removal. Preferably, for the first pot body 1201 with a large capacity and a high height, two heat insulation pieces 42 are detachably provided on the front and back of its heat insulation jacket 36 (for example, fixed by a snap-fit ​​method). Because the pot body 12 is relatively tall, the exposed area of ​​the first pot body 1201 is large during cooking. Adding a heat insulation sheet 42 can effectively reduce the risk of users accidentally contacting the high-temperature outer wall and further improve the safety of preventing burns. Specifically, the heat insulation sheet 42 has a transparent structure, which makes it easy to observe the cooking status of the food inside the pot body 12.

[0049] In addition, the air fryer also includes a head fixing bracket 38, one end of which is connected to the sliding seat 4 and the other end is connected to the head housing 503. The shape of the head fixing bracket 38 is adapted to the edge of the head housing 503 to ensure the connection strength and positional accuracy between the head 5 and the sliding seat 4, and to make the overall structure more compact and stable.

[0050] Preferably, a horizontal guide rail 1011 is provided on the horizontal platform 101 along the direction in which the pot body 12 is pushed into the base 1. A first limiting groove 3603 matching the shape of the horizontal guide rail 1011 is provided at the bottom of each heat insulation jacket 36. When the pot body 12 is pushed into the base 1, the horizontal guide rail 1011 and the first limiting groove 3603 limit each other to prevent the pot body 12 from tipping over.

[0051] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An air fryer with a replaceable pot body (12) and a heat dissipation structure, characterized in that, include: The base (1) has a horizontal platform (101) and a vertical support (102) on one side thereon; a fixed bracket (2) is provided in the vertical support (102); two vertical guide rails (3) are respectively provided on both sides of the fixed bracket (2); a sliding seat (4) is slidably mounted on the guide rails; the machine head (5) is connected to the sliding seat (4), and its interior is divided into an independent upper cavity (501) and a lower cavity (502). The upper cavity (501) is located on the radial outer side of the lower cavity (502). A heating component (6) is provided in the lower cavity (502), and a cooling fan (7) is provided in the upper cavity (501). A first heat dissipation duct (8) is also provided in the upper cavity (501). Its air inlet is arranged around the cooling fan (7) and connected to the upper cavity (501), and its air outlet is arranged around the cooling fan (7). At the lower end of the upper cavity (501), when the cooling fan (7) is started, the cooling air is discharged downward from the air outlet through the first heat dissipation air duct (8) and flows along the outer wall of the pot body (12); the elastic reset member (9) is connected to the upper end of the fixed bracket (2) and the sliding seat (4) at both ends respectively; the locking assembly (10) is movably installed on the sliding seat (4) and is used to lock the sliding seat (4) when it moves to a preset height; the unlocking assembly (11) is movably installed on the fixed bracket (2) and linked with the locking assembly (10). Under the action of external force, the locking assembly (10) can be triggered to unlock, so that the sliding seat (4) drives the machine head (5) to move upward and reset under the drive of the elastic reset member (9); at least two pot bodies (12) of different capacities are alternatively placed on the base (1) and can be covered with the machine head (5).

2. The air fryer according to claim 1, characterized in that, A recognition component for identifying the size of the pot (12) is provided between the machine head (5) and the pot body (12). There are three pot bodies (12). A second sensor is provided on each side of the machine head (5), namely the second sensor a and the second sensor b. The first pot body (1201) has a first sensor on each of its two handles (13), the two sensors are arranged symmetrically in the center, and one of them corresponds to the position of the second sensor a. The second pot body (1202) has a first sensor on each of its two handles (13), the two sensors are arranged symmetrically in the center, and one of them corresponds to the position of the second sensor b. The third pot body (1203) has a first sensor on each of its two handles (13), and the two sensors correspond one-to-one with the second sensor a and the second sensor b, respectively.

3. The air fryer according to claim 1, characterized in that, The fixed bracket (2) has a plurality of lock holes (21) spaced vertically along its upper edge; the locking assembly (10) includes a first elastic element and a locking block (1002). The first elastic element is disposed on the sliding seat (4) and its two ends abut against the sliding seat (4) and the locking block (1002) respectively. When the sliding seat (4) slides to a preset height, the first elastic element pushes the locking block (1002) to insert into the corresponding lock hole (21).

4. The air fryer according to claim 3, characterized in that, The sliding seat (4) has a receiving cavity (401) on its side. The first elastic member is received in the receiving cavity (401). The locking block (1002) abuts against the first elastic member and is confined in the receiving cavity (401). The end of the locking block (1002) can extend or retract into the receiving cavity (401) under the action of the elastic force of the first elastic member and external force.

5. The air fryer according to claim 1, characterized in that, Also includes: Multiple heat-insulating jackets (36) are respectively fitted onto the outside of the corresponding pot body (12). The heat-insulating jackets (36) wrap around the bottom of the pot body (12) and extend upward on both sides. On both sides, there are embedding grooves (3604) for the handle (13) to be embedded. After the handle (13) is embedded, there is a gap between it and the embedding groove (3604). This gap forms a second heat dissipation duct (37) for guiding the airflow discharged from the first heat dissipation duct (8) and allowing it to flow around the handle (13) before being discharged. Multiple first exhaust holes (3601) are provided on the heat-insulating jackets (36) for the airflow flowing through the second heat dissipation duct (37) and flowing into the interior of the heat-insulating jackets (36) along the outer wall of the pot body (12) to be discharged outward.

6. The air fryer according to claim 5, characterized in that, The upper sides of the heat insulation jacket (36) are provided with wind deflectors (3602) corresponding to the positions of the embedded grooves (3604) to guide airflow into the interior of the embedded grooves (3604).

7. The air fryer according to claim 3, characterized in that, The unlocking component (11) includes: an unlocking button (1101), a second elastic element (1102), and a push rod (1103); the unlocking button (1101) is movably mounted on the upper end of the vertical support (102), its lower end abutting against the upper end of the second elastic element (1102), and the lower end of the second elastic element (1102) abutting against the fixed bracket (2); the upper end of the push rod (1103) is connected to the unlocking button (1101), and the lower end is connected to the upper end of the vertical support (102). The fixed bracket (2) extends vertically, and the push rod (1103) is provided with multiple unlocking protrusions (11031) at vertical intervals along its upper edge. Each unlocking protrusion (11031) corresponds to each lock hole (21). When the unlocking button (1101) is pressed, the push rod (1103) moves downward, and the unlocking protrusions (11031) push the lock block (1002) inserted into the corresponding lock hole (21) to disengage from the lock hole (21) to unlock.

8. The air fryer according to claim 7, characterized in that, The ends of the locking block (1002) and the unlocking protrusion (11031) that are in contact with each other are provided with mutually cooperating inclined structures, and the inclined structures are located on the upper and lower sides.

9. The air fryer according to claim 1, characterized in that, The head unit (5) includes: a head unit housing, a heat insulation cover (504) disposed inside the head unit housing, a mounting bracket (39) sleeved on the outside of the heat insulation cover (504), and a wind guide cover (40) sleeved on the outside of the mounting bracket (39). The heat shield (504) divides the interior of the outer shell into an upper cavity (501) and a lower cavity (502). The heating component (6) is located below the heat shield (504), and the cooling fan (7) is located above the heat shield (504) and connected to the mounting bracket (39). The mounting bracket (39) has openings at its upper end and side, and the air guide shroud (40) has an opening at its upper end corresponding to the opening at the upper end of the mounting bracket (39), and the two together form a first heat dissipation duct (8), which connects to the opening on the side of the mounting bracket (39); wherein, The inner sidewall of the air guide shroud (40) is provided with a plurality of air guide ribs (401) spaced circumferentially, and each air guide rib (401) extends from the air inlet of the first heat dissipation air duct (8) toward the air outlet. The edges of the air guide shroud (40) and the mounting bracket (39) extend out of the heat insulation shroud (504), and the edge of the mounting bracket (39) is provided with a plurality of second exhaust holes (3901) corresponding to the air outlet of the first heat dissipation duct (8).

10. The air fryer according to claim 9, characterized in that, Also includes: The head fixing bracket (38) is connected to the sliding seat (4) at one end and to the heat insulation cover (504) at the other end.

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