Air fryer

Abstract

The invention provides an air fryer. The air fryer is characterized in that a main mounting cavity is formed in a shell; the main heating part is arranged in the main mounting cavity, a main heating chamber is arranged in the main heating part, and a main heater is arranged at the top of the main heating chamber; a main airflow channel communicated with the main heating chamber is arranged in the air guide pipeline; wherein a secondary airflow channel communicated with the main airflow channel is arranged below the main heating chamber, and a main wind wheel used for guiding air in the main heating chamber to the main airflow channel is arranged in the secondary airflow channel; an exhaust channel communicated with the secondary airflow channel is further arranged on one side of the secondary airflow channel, and an opening of the exhaust channel is located on a flowing path of air in the one-way circulation air channel so that water vapor can be exhausted through the exhaust channel. The technical problems that when high-moisture food materials are cooked, water vapor generated in a heating cavity is difficult to discharge effectively and accumulates in the cavity, so that the surface of food is wet and soft, the taste is reduced, and meanwhile the long-term use performance of equipment is possibly affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen utensils, and more particularly, to an air fryer. Background Art

[0002] As a healthy cooking device, an air fryer heats food through high-temperature air circulation to achieve a cooking effect similar to frying, while reducing the use of oil and meeting the needs of modern consumers for a healthy diet.

[0003] However, there are at least the following problems in the related art: When cooking high-moisture ingredients, the water vapor generated in the heating chamber is difficult to effectively discharge, and the accumulation in the chamber will cause the surface of the food to become wet and soft, reducing the taste, and may also affect the long-term use performance of the device. Summary of the Invention

[0004] The technical problem solved by the present invention is that when cooking high-moisture ingredients, the water vapor generated in the heating chamber is difficult to effectively discharge, and the accumulation in the chamber will cause the surface of the food to become wet and soft, reducing the taste, and may also affect the long-term use performance of the device.

[0005] To solve the above problems, the present invention provides an air fryer, which includes: a housing, a main installation cavity is provided inside the housing; a main heating part, the main heating part is arranged in the main installation cavity, and a main heating chamber is provided inside the main heating part, and a main heater is provided at the top of the main heating chamber; a wind guide duct, the wind guide duct is arranged on one side of the main heating part, and a main air flow channel communicating with the main heating chamber is provided inside the wind guide duct; wherein, a secondary air flow channel communicating with the main air flow channel is provided below the main heating chamber, and a main air wheel for guiding the air in the main heating chamber to the main air flow channel is provided inside the secondary air flow channel, and the main air flow channel, the secondary air flow channel and the main heating chamber form a closed one-way circulation air duct; an exhaust channel communicating with the secondary air flow channel is further provided on one side of the secondary air flow channel, and the opening of the exhaust channel is located on the flow path of the air in the one-way circulation air duct, so that the water vapor in the one-way circulation air duct is discharged through the exhaust channel.

[0006] Compared with the prior art, the technical effects achieved by adopting this technical solution are: A closed one-way circulation air duct is formed by the main air flow channel, the secondary air flow channel and the main heating chamber, and by setting the main air wheel, the hot air completes a one-way circulation in the air fryer, improving the uniformity and efficiency of food heating. In addition, an exhaust channel is arranged on the circulation path of the one-way circulation air duct, and with the help of the wind force of the main air wheel, the water vapor in the one-way circulation air duct can be discharged to prevent the water vapor from accumulating in the air fryer and affecting the taste of the food.

[0007] In an example of the present invention, the secondary air flow channel is in a volute shape, and the main air wheel is located at the center of the secondary air flow channel; an air-facing side wall is provided at the end of the secondary air flow channel, the air-facing side wall is located in the flow direction of the air flowing out of the main air wheel, and the opening of the exhaust channel is provided on the air-facing side wall; the end of the secondary air flow channel communicates with the main air flow channel, and the air flow in the secondary air flow channel first passes through the opening of the exhaust channel and then flows into the main air flow channel.

[0008] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By setting the secondary air flow channel in a volute shape, the flow path of the air flow is optimized, and through the position layout of the exhaust channel and the main air flow channel, the air flow first passes through the opening of the exhaust channel and then enters the main air flow channel for circulation, so that the water vapor in the unidirectional circulation air duct can be preferentially discharged from the air fryer.

[0009] In an example of the present invention, a first opening is provided above the main heating part, and the first opening is provided on the side of the main heater, so that the air in the main air flow channel flows into the main heating chamber and is heated by the main heater.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By setting the relative positions of the first opening and the main heater, the air outlet of the main air flow channel is directly opposite to the main heater, enabling the air to be heated during the circulation process in the unidirectional circulation air duct.

[0011] In an example of the present invention, an inner pot is further provided in the main heating chamber below the main heater, and a second opening is provided at the bottom of the inner pot corresponding to the position of the main air wheel, so that the main heating chamber communicates with the secondary air flow channel; wherein, a first filter screen is provided between the main air wheel and the inner pot for filtering the air entering the secondary air flow channel.

[0012] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By providing the second opening at the bottom of the inner pot, the air in the unidirectional circulation air duct will not be blocked by the pot body itself during the flowing process, improving the circulation efficiency; and by providing the first filter screen between the inner pot and the main air wheel, impurities such as food residues in the inner pot will not enter the main air wheel through the second opening, improving the fault tolerance of using the air fryer.

[0013] In an example of the present invention, a baffle is provided on the periphery of the second opening, and a hem is provided at the end of the baffle; wherein, a tray is further provided in the inner pot, and a limiting groove cooperating with the hem is provided on the lower side of the tray to fix the tray above the baffle.

[0014] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By providing the baffle around the second opening, the food residues in the inner pot will not easily pass through the second opening, further improving the fault tolerance; in addition, through the cooperation of the tray and the hem on the baffle, the stability of the tray installation is improved.

[0015] In an example of the present invention, the tray includes: a gasket, a third opening is provided at a position corresponding to the second opening of the gasket for allowing the air in the unidirectional circulation air duct to pass through; a second filter screen, the second filter screen is provided at the third opening; wherein, the air in the unidirectional circulation air duct flows through the second filter screen and the first filter screen in sequence.

[0016] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: by setting the tray as a double-layer structure, on the one hand, the tray itself can carry food, and the second filter screen can prevent impurities from passing through the third opening; on the other hand, water vapor and air can pass through the first filter screen and the second filter screen, thereby removing the water vapor accumulated in the air fryer.

[0017] In an example of the present invention, a secondary installation cavity is provided below the main installation cavity, a secondary heating part is installed in the secondary installation cavity, a secondary heating chamber is provided in the secondary heating part, and a vortex fan is provided at the upper part of the secondary heating chamber; wherein, a secondary heater is provided on the outer peripheral side of the vortex fan, and the secondary heater cooperates with the vortex fan to heat the object in the secondary heating chamber.

[0018] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: by providing an additional heating capacity through the setting of the secondary heating part, it is suitable for different cooking requirements and improves the versatility of the air fryer; the cooperation between the vortex fan and the secondary heater generates a vortex air flow, enhancing the heat distribution uniformity in the second heating cavity and improving the heating efficiency.

[0019] In an example of the present invention, an intermediate installation cavity is provided between the main installation cavity and the secondary installation cavity, and a driving motor is provided in the intermediate installation cavity; an upper motor shaft is provided on the upper side of the driving motor, the upper motor shaft is connected to the main air wheel, a lower motor shaft is provided on the lower side of the driving motor, and the lower motor shaft is connected to the vortex fan; wherein, the driving motor can be used to drive the main air wheel and the vortex fan to rotate simultaneously.

[0020] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: a single driving motor drives the main air wheel and the vortex fan simultaneously through the upper and lower motor shafts, simplifies the structure, reduces energy consumption and manufacturing costs, and improves the overall cooking efficiency.

[0021] In an example of the present invention, an air outlet space is further provided between the secondary installation cavity and the intermediate installation cavity, the lower motor shaft passes through the air outlet space, and a secondary air wheel is provided on the part of the lower motor shaft located in the air outlet space; wherein, the air outlet space is separated from the intermediate installation cavity by a flow guiding grid, and the secondary air wheel is used to guide the air in the intermediate installation cavity to the air outlet space.

[0022] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By setting an air outlet space and arranging a secondary air wheel on the lower motor shaft, the air fryer can guide the hot air in the middle installation cavity to the air outlet space during operation; in addition, through the setting of the diversion grille, the guiding efficiency of the hot air can be further enhanced.

[0023] In one example of the present invention, a first air outlet communicating with the exhaust passage is provided on one side of the housing, and a first air outlet grille is provided at the first air outlet; and / or a second air outlet communicating with the air outlet space is provided on one side of the housing, and a second air outlet grille is provided at the second air outlet.

[0024] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: By setting the first air outlet and the second air outlet, water vapor and hot air can be discharged from the air fryer, and foreign objects outside can be blocked from invading the inside of the air fryer through the air outlet grille.

[0025] After adopting the technical solution of the present invention, the following technical effects can be achieved: (1) A closed one-way circulation air duct is formed by the main air flow passage, the secondary air flow passage and the main heating chamber, and by arranging the main air wheel, the hot air can complete one-way circulation in the air fryer, improving the uniformity and efficiency of food heating. In addition, an exhaust passage is provided on the circulation path of the one-way circulation air duct. With the wind force of the main air wheel, the water vapor in the one-way circulation air duct can be discharged to prevent the water vapor from accumulating in the air fryer and affecting the taste of the food; (2) By setting the secondary air flow passage in a volute shape, the flow path of the air flow is optimized, and through the position layout of the exhaust passage and the main air flow passage, the air flow first flows through the opening of the exhaust passage and then enters the main air flow passage for circulation, so that the water vapor in the one-way circulation air duct can be preferentially discharged from the air fryer; (3) By setting the tray in a double-layer structure, on the one hand, the tray itself can carry food, and the second filter screen can block impurities from passing through the third opening; on the other hand, water vapor and air can pass through the first filter screen and the second filter screen, thereby discharging the water vapor accumulated in the air fryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings to be used in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings; Figure 1 Structural schematic of an air fryer provided by an embodiment of the present invention Figure 1 ; Figure 2Structural schematic diagram of an air fryer provided by an embodiment of the present invention Figure 2 ; Figure 3 is Figure 2 The cross-sectional schematic diagram of the air fryer in the A-A direction in ; Figure 4 is Figure 2 The cross-sectional schematic diagram of the air fryer in the B-B direction in ; Figure 5 is Figure 1 The partial structural schematic diagram of the air fryer in ; Figure 6 is Figure 1 The structural schematic diagram of the unidirectional circulation air duct of the air fryer in ; Figure 7 is Figure 1 The structural schematic diagram of the inner pot of the air fryer in ; Figure 8 is Figure 1 The structural schematic diagram of the tray of the air fryer in .

[0027] Explanation of reference numerals: 1. Air fryer; 10. Housing; 11. Main installation cavity; 12. Sub-installation cavity; 13. Intermediate installation cavity; 14. First air outlet; 141. First air outlet grille; 15. Second air outlet; 151. Second air outlet grille; 16. Air inlet hole; 20. Main heating part; 21. Main heating chamber; 22. Main heater; 23. First opening; 24. First filter screen; 30. Air guide duct; 31. Main air flow channel; 32. First end; 33. Second end; 34. Auxiliary air flow channel; 40. Main air wheel; 41. Secondary air flow channel; 42. Exhaust channel; 43. Windward side wall; 50. Inner pot; 51. Second opening; 52. Baffle; 521. Flange; 53. Tray; 531. Gasket; 532. Third opening; 60. Sub-heating part; 61. Sub-heating chamber; 62. Eddy current fan; 63. Sub-heater; 70. Driving motor; 71. Upper motor shaft; 72. Lower motor shaft; 80. Air outlet space; 81. Sub-air wheel. Detailed implementation manners

[0028] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0029] See Figures 1 to 8, the present invention provides an air fryer 1, which includes a housing 10, a main heating part 20 and an air guide duct 30. A main installation cavity 11 is provided inside the housing 10; the main heating part 20 is arranged inside the main installation cavity 11, and a main heating chamber 21 is provided inside the main heating part 20. A main heater 22 is provided at the top of the main heating chamber 21; the air guide duct 30 is arranged on one side of the main heating part 20, and a main air flow channel 31 communicating with the main heating chamber 21 is provided inside the air guide duct 30; wherein, a secondary air flow channel 41 communicating with the main air flow channel 31 is provided below the main heating chamber 21, and a main air wheel 40 for guiding the air in the main heating chamber 21 towards the main air flow channel 31 is provided inside the secondary air flow channel 41. The main air flow channel 31, the secondary air flow channel 41 and the main heating chamber 21 form a closed one-way circulation air duct; a discharge channel 42 communicating with the secondary air flow channel 41 is further provided on one side of the secondary air flow channel 41, and the opening of the discharge channel 42 is located on the air flow path of the air in the one-way circulation air duct, so that the water vapor in the one-way circulation air duct is discharged through the discharge channel 42.

[0030] A closed one-way circulation air duct is formed by the main air flow channel 31, the secondary air flow channel 41 and the main heating chamber 21, and by setting the main air wheel 40, hot air completes one-way circulation in the air fryer 1, improving the uniformity and efficiency of food heating. In addition, by arranging the discharge channel 42 on the circulation path of the one-way circulation air duct, with the help of the wind force of the main air wheel 40, the water vapor in the one-way circulation air duct can be discharged, preventing the water vapor from accumulating in the air fryer 1 and affecting the taste of the food.

[0031] In addition, the air flow inside the air fryer 1 in the present invention can flow internally by means of the one-way circulation air duct, and air frying can be realized without additionally setting a fan inside the main heating chamber 21. On the one hand, hot air circulates in the entire one-way circulation air duct, and the heat distribution in the main heating chamber is uniform, improving the air frying effect; on the other hand, the air in the one-way circulation air duct is first heated by the main heater 22 arranged above and then flows to the food placed below, without blowing food residues and grease onto the main heater 22, improving the safety of the air fryer 1 during use.

[0032] Furthermore, the main air flow channel 31, the secondary air flow channel 41, the discharge channel 42 and the subsequent auxiliary air flow channel 34 appearing in the present invention are entities, referring to the inner walls passed by the air flow path in the air duct, and the one-way circulation air duct refers to the physical path formed by the main air flow channel 31, the secondary air flow channel 41 and the inner wall forming the main heating chamber 21 that can allow air flow to pass through.

[0033] Preferably, the opening of the discharge channel 42 faces the air flow direction in the one-way circulation air duct, facilitating the discharge of water vapor from the discharge channel 42.

[0034] Further, a plurality of air inlet holes 16 are provided above the housing 10, and the main heating part 20 is also provided with a plurality of air inlet gaps. The external air of the air fryer 1 can enter the main heating chamber 21 through the air inlet holes 16 and the air inlet gaps in sequence. When a part of the air flow in the unidirectional circulation air duct flows out through the exhaust passage 42, the air flowing in through the air inlet holes 16 and the air inlet gaps can maintain the air pressure balance in the unidirectional circulation air duct.

[0035] Preferably, the air guiding duct 30 is a flat duct that fits the outer shape of the main heating part 20. The air guiding duct 30 has a first end 32 and a second end 33. The first end 32 is connected to the top of the main heating part 20, and the second end 33 is connected to the bottom of the main heating part 20.

[0036] Preferably, there is a gap between the air guiding duct 30 and the outer shell of the main heating part 20.

[0037] Further, the secondary air flow passage 41 is in a volute shape, and the main air wheel 40 is located at the center of the secondary air flow passage 41. An air-facing side wall 43 is provided at the end of the secondary air flow passage 41. The air-facing side wall 43 is located in the flowing direction of the air flowing out of the main air wheel 40. The opening of the exhaust passage 42 is provided on the air-facing side wall 43. The end of the secondary air flow passage 41 is communicated with the main air flow passage 31. The air flow in the secondary air flow passage 41 first passes through the opening of the exhaust passage 42 and then flows into the main air flow passage 31.

[0038] By setting the secondary air flow passage 41 in a volute shape, the flowing path of the air flow is optimized. And through the position layout of the exhaust passage 42 and the main air flow passage 31, the air flow first flows through the opening of the exhaust passage 42 and then enters the main air flow passage 31 for circulation, so that the water vapor in the unidirectional circulation air duct can be preferentially discharged from the air fryer 1.

[0039] Further, the exhaust passage 42 is directly communicated with the outside of the air fryer 1. When the air flow in the secondary air flow passage 41 passes through the exhaust passage 42, it is cooled and becomes water vapor, and then is discharged from the air fryer 1.

[0040] Preferably, a first opening 23 is formed above the main heating part 20. The first opening 23 is provided on the side of the main heater 22, so that the air in the main air flow passage 31 can flow into the main heating chamber 21 and be heated by the main heater 22.

[0041] By setting the relative positions of the first opening 23 and the main heater 22, the air outlet of the main air flow passage 31 is directly opposite to the main heater 22, which can heat the air during the circulation process in the unidirectional circulation air duct.

[0042] Furthermore, an auxiliary air flow channel 34 is provided between the first opening 23 and the main air flow channel 31. By providing the auxiliary air flow channel 34, the air in the main air flow channel 31 can flow through the main heater 22 more precisely, thereby improving the heating efficiency of the hot air in the air fryer 1.

[0043] Preferably, the main heater 22 is suspended at the top of the main heating part 20, and the main heater 22 is disc-shaped.

[0044] Furthermore, a flow guiding structure is provided at the connection between the main heating part 20 and the first end 32 of the flow guiding pipe. The flow guiding structure has a certain curvature relative to both the main air flow channel 31 and the auxiliary air flow channel 34, so that the air in the main air flow channel 31 can smoothly enter the main heating chamber 21.

[0045] On the other hand, an inner pot 50 is further provided in the main heating chamber 21 below the main heater 22. A second opening 51 is provided at the bottom of the inner pot 50 corresponding to the position of the main air wheel 40, so that the main heating chamber 21 communicates with the secondary air flow channel 41; wherein, a first filter screen 24 is provided between the main air wheel 40 and the inner pot 50 for filtering the air entering the secondary air flow channel 41.

[0046] By providing the second opening 51 at the bottom of the inner pot 50, the air in the unidirectional circulation air duct will not be obstructed by the pot body itself during the flow process, improving the circulation efficiency; and by providing the first filter screen 24 between the inner pot 50 and the main air wheel 40, food residues and other impurities in the inner pot 50 will not enter the main air wheel 40 through the second opening 51, improving the fault tolerance of using the air fryer 1.

[0047] Preferably, the main heating chamber 21 and the secondary air flow channel 41 are separated into two spaces by the first filter screen 24, which is convenient for the main air wheel 40 to more quickly transport the air in the secondary air flow channel 41 into the main air flow channel 31.

[0048] For example, a baffle 52 is provided on the periphery of the second opening 51, and a hem 521 is provided at the end of the baffle 52; wherein, a tray 53 is further provided in the inner pot 50, and a limit groove matching with the hem 521 is provided on the lower side of the tray 53, so that the tray 53 is fixed above the baffle 52.

[0049] By providing the baffle 52 around the second opening 51, the food residues in the inner pot 50 will not easily pass through the second opening 51, further improving the fault tolerance; in addition, through the cooperation of the tray 53 and the hem 521 on the baffle 52, the stability of the tray 53 during installation is improved.

[0050] Preferably, the baffle 52 forms a closed fence around the second opening 51, so that the food residues falling to the bottom of the inner pot 50 cannot enter the main air wheel 40 through the second opening 51.

[0051] Preferably, the tray 53 includes a gasket 531 and a second filter screen (not shown in the figure). The gasket 531 is provided with a third opening 532 corresponding to the position of the second opening 51 for allowing the air in the unidirectional circulation air duct to pass through; the second filter screen is disposed at the third opening 532; wherein, the air in the unidirectional circulation air duct flows through the second filter screen and the first filter screen 24 in sequence.

[0052] By setting the tray 53 to a double-layer structure, on the one hand, the tray 53 itself can carry food, and the second filter screen can prevent impurities from passing through the third opening 532; on the other hand, water vapor and air can pass through the first filter screen 24 and the second filter screen, thereby discharging the water vapor accumulated in the air fryer 1.

[0053] Preferably, the gasket 531 is made of a high-temperature and corrosion-resistant metal material.

[0054] Preferably, the second filter screen is a water-permeable gauze to allow water vapor to pass through; the material is a high-temperature and corrosion-resistant metal material.

[0055] Furthermore, several small openings are also provided on the periphery of the gasket 531 around the second opening 51, which can prevent water vapor from depositing on the surface of the gasket 531, thereby affecting the taste of the food.

[0056] Further, a secondary installation cavity 12 is provided on the lower side of the main installation cavity 11. A secondary heating part 60 is installed in the secondary installation cavity 12. A secondary heating chamber 61 is provided in the secondary heating part 60. An eddy current fan 62 is provided at the upper part of the secondary heating chamber 61; wherein, a secondary heater 63 is provided on the outer peripheral side of the eddy current fan 62, and the secondary heater 63 cooperates with the eddy current fan 62 to heat the object in the secondary heating chamber 61.

[0057] By providing the secondary heating part 60, additional heating capacity is provided, which is suitable for different cooking requirements and improves the versatility of the air fryer 1; the cooperation between the eddy current fan 62 and the secondary heater 63 generates an eddy current air flow, enhancing the heat distribution uniformity in the second heating cavity and improving the heating efficiency.

[0058] Specifically, an intermediate installation cavity 13 is provided between the main installation cavity 11 and the secondary installation cavity 12. A driving motor 70 is provided in the intermediate installation cavity 13; an upper motor shaft 71 is provided on the upper side of the driving motor 70, and the upper motor shaft 71 is connected to the main air wheel 40. A lower motor shaft 72 is provided on the lower side of the driving motor 70, and the lower motor shaft 72 is connected to the eddy current fan 62; wherein, the driving motor 70 can be used to drive the main air wheel 40 and the eddy current fan 62 to rotate simultaneously.

[0059] A single driving motor 70 drives the main air wheel 40 and the eddy current fan 62 simultaneously through the first and lower motor shafts 72, which simplifies the structure, reduces energy consumption and manufacturing costs, and improves the overall cooking efficiency.

[0060] Further, an air outlet space 80 is provided between the secondary installation cavity 12 and the intermediate installation cavity 13. The lower motor shaft 72 passes through the air outlet space 80, and a secondary air wheel 81 is provided on the part of the lower motor shaft 72 located in the air outlet space 80. Among them, the air outlet space 80 and the intermediate installation cavity 13 are separated by a flow guide grille, and the secondary air wheel 81 is used to guide the air in the intermediate installation cavity 13 to the air outlet space 80.

[0061] By providing the air outlet space 80 and arranging the secondary air wheel 81 on the lower motor shaft 72, the air fryer 1 can guide the hot air in the intermediate installation cavity 13 into the air outlet space 80 during operation. In addition, through the arrangement of the flow guide grille, the guiding efficiency of the hot air can be further enhanced.

[0062] Preferably, a first air outlet 14 communicating with the exhaust passage 42 is provided on one side of the housing 10, and a first air outlet grille 141 is provided at the first air outlet 14; and / or a second air outlet 15 communicating with the air outlet space 80 is provided on one side of the housing 10, and a second air outlet grille 151 is provided at the second air outlet 15.

[0063] By providing the first air outlet 14 and the second air outlet 15, the water vapor and hot air can be discharged from the air fryer 1, and the first air outlet grille 141 and the second air outlet grille 151 can prevent external foreign objects from invading the interior of the air fryer 1.

[0064] Further, a gap is left at the bottom of the first air outlet 14 of the first air outlet grille 141 to facilitate the discharge of water vapor from the first air outlet 14.

[0065] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. An air fryer, characterized in that, The air fryer includes: a housing, within which a main installation cavity is provided; a main heating part, which is arranged in the main installation cavity, and a main heating chamber is provided in the main heating part, and a main heater is provided at the top of the main heating chamber; a wind guide duct, which is arranged on one side of the main heating part, and a main air flow channel communicating with the main heating chamber is provided in the wind guide duct; Wherein, a secondary air flow channel communicating with the main air flow channel is provided below the main heating chamber, and a main air wheel for guiding the air in the main heating chamber towards the main air flow channel is provided in the secondary air flow channel, and the main air flow channel, the secondary air flow channel and the main heating chamber form a closed one-way circulation air duct; An exhaust channel communicating with the secondary air flow channel is further provided on one side of the secondary air flow channel, and the opening of the exhaust channel is located on the air flow path of the air in the one-way circulation air duct, so that the water vapor in the one-way circulation air duct is discharged through the exhaust channel.

2. The air fryer according to claim 1, wherein the secondary air flow channel is in a volute shape, and the main air wheel is located at the center of the secondary air flow channel; an air-facing side wall is provided at the end of the secondary air flow channel, the air-facing side wall is located in the air flow direction of the air flowing out of the main air wheel, and the opening of the exhaust channel is provided on the air-facing side wall; the end of the secondary air flow channel communicates with the main air flow channel, and the air flow in the secondary air flow channel first passes through the opening of the exhaust channel and then flows into the main air flow channel.

3. The air fryer according to claim 2, wherein a first opening is provided above the main heating part, and the first opening is provided on the side of the main heater, so that the air in the main air flow channel flows into the main heating chamber and is heated by the main heater.

4. The air fryer according to claim 1, wherein an inner pot is further provided in the main heating chamber below the main heater, and a second opening is provided at the bottom of the inner pot corresponding to the position of the main air wheel, so that the main heating chamber communicates with the secondary air flow channel; Wherein, a first filter screen is provided between the main air wheel and the inner pot for filtering the air entering the secondary air flow channel.

5. The air fryer according to claim 4, wherein a baffle is provided on the periphery of the second opening, and a hem is provided at the end of the baffle; Wherein, a tray is further provided in the inner pot, and a limiting groove for cooperating with the hem is provided on the lower side of the tray, so that the tray is fixed above the baffle.

6. The air fryer according to claim 5, wherein the tray includes: a gasket, a third opening corresponding to the second opening is provided on the gasket for allowing the air in the one-way circulation air duct to pass through; a second filter screen, which is provided at the third opening; Wherein, the air in the one-way circulation air duct flows through the second filter screen and the first filter screen in sequence.

7. The air fryer according to claim 1, wherein a secondary installation cavity is provided on the lower side of the main installation cavity, a secondary heating part is installed in the secondary installation cavity, a secondary heating chamber is provided in the secondary heating part, and a vortex fan is provided at the upper part of the secondary heating chamber; Wherein, a secondary heater is provided on the outer peripheral side of the eddy current fan, and the secondary heater cooperates with the eddy current fan to heat the object in the secondary heating chamber.

8. The air fryer according to claim 7, wherein an intermediate installation cavity is provided between the main installation cavity and the secondary installation cavity, and a drive motor is provided in the intermediate installation cavity; an upper motor shaft is provided on the upper side of the drive motor, the upper motor shaft is connected to the main wind wheel, a lower motor shaft is provided on the lower side of the drive motor, and the lower motor shaft is connected to the eddy current fan; wherein, the drive motor can be used to drive the main wind wheel and the eddy current fan to rotate simultaneously.

9. The air fryer according to claim 8, wherein an air outlet space is further provided between the secondary installation cavity and the intermediate installation cavity, the lower motor shaft passes through the air outlet space, and a secondary wind wheel is provided on the part of the lower motor shaft located in the air outlet space; wherein, the air outlet space and the intermediate installation cavity are separated by a flow guiding grille, and the secondary wind wheel is used to guide the air in the intermediate installation cavity to the air outlet space.

10. The air fryer according to claim 9, wherein a first air outlet communicating with the exhaust passage is provided on one side of the housing, and a first air outlet grille is provided at the first air outlet; and / or a second air outlet communicating with the air outlet space is provided on one side of the housing, and a second air outlet grille is provided at the second air outlet.

Images