Fan assembly and cooking utensil

Abstract

The fan assembly comprises a first fan and a second fan, the first fan and the second fan are coaxial and are arranged at intervals in the axial direction of the first fan, the first fan comprises a plurality of first blades arranged at intervals in the circumferential direction of the first fan, and the second fan comprises a plurality of second blades arranged at intervals in the circumferential direction of the second fan. The first fan comprises a plurality of first blades which are arranged at intervals in the circumferential direction of the second fan, the diameters of the circumscribed circles of all the positions of the first blades are equal, the second fan comprises a plurality of second blades which are arranged at intervals in the circumferential direction of the second fan, and the diameters of the circumscribed circles of all the positions of the second blades are equal. The fan assembly has the advantages of being large in air outlet volume and air pressure and high in cooking efficiency of food materials.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and particularly relates to a fan assembly and a cooking appliance. Background Art

[0002] An air fryer is a cooking utensil that uses hot air for "frying". The air fryer replaces hot oil with hot air, and forms a circulating heat flow in a closed pot with hot air to cook the food. At the same time, the hot air can also blow away the moisture on the surface of the food, so that the food reaches an effect similar to frying.

[0003] In the related art, when the air fryer works, a centrifugal fan is used to realize the circulating flow of gas in the cooking cavity, so as to realize the circulating heating of the food with hot air and achieve the effect of cooking the food without oil. When a single centrifugal fan works, part of the air flow blows in the direction away from the cooking cavity, which causes energy loss of the air flow, so that the air volume and air pressure entering the cooking cavity are small, and the cooking efficiency of the food is low. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] Therefore, an embodiment of the utility model provides a fan assembly, which has the advantages of large air outlet volume and air pressure, and high cooking efficiency for food.

[0006] An embodiment of the utility model also provides a cooking appliance.

[0007] The fan assembly of the embodiment of the utility model includes a first fan and a second fan. The first fan and the second fan are coaxial and arranged at intervals along the axial direction of the first fan. The first fan includes a plurality of first blades arranged at intervals along the circumferential direction of the first fan. The diameters of the circumscribed circles at each position of the plurality of first blades are equal. The second fan includes a plurality of second blades arranged at intervals along the circumferential direction of the second fan. The diameters of the circumscribed circles at each position of the plurality of second blades are equal.

[0008] According to the fan assembly of the embodiment of the present utility model, the first fan and the second fan are coaxial and arranged at intervals along the axial direction of the first fan. When the first fan rotates, the second fan can rotate synchronously with the first fan. At this time, the first fan can be arranged on the side of the second fan facing the cooking cavity. The first fan rotates to suck the gas in the cooking cavity and discharge most of the gas radially outward to the cooking cavity. At the same time, a part of the gas sucked by the first fan is also blown towards the second fan, and the second fan rotates to discharge this part of the gas radially outward to the cooking cavity, thereby avoiding the energy loss caused by this part of the gas colliding with the wall surface, ensuring that the overall air volume and air pressure of the first fan and the second fan are larger, and the cooking efficiency of the ingredients located in the cooking cavity is higher.

[0009] Optionally, the first fan further includes a first shaft connecting plate. The first blade includes a first basic blade and a first centrifugal blade that are connected and angled. One end of the first basic blade is connected to the outer peripheral edge of the first shaft connecting plate, and the first basic blade is perpendicular to the axial direction of the first shaft connecting plate. The fan assembly of the present utility model sets the first fan as a centrifugal fan blade. Compared with an impeller with a more complex structure, there is no need to set a hub, and the manufacturing cost of the first fan is lower.

[0010] Optionally, the first shaft connecting plate is located on the side of the second fan facing the cooking cavity, and the first centrifugal blade is located on the side of the first basic blade facing the cooking cavity. The fan assembly of the present utility model sets the first centrifugal blade on the side of the first basic blade facing the cooking cavity, that is, the opening of the first fan faces the cooking cavity, so as to facilitate the first fan to have a better air suction and air discharge effect.

[0011] Optionally, the second fan further includes a second shaft connecting plate. The second blade includes a second basic blade and a second centrifugal blade that are connected and angled. One end of the second basic blade is connected to the outer peripheral edge of the second shaft connecting plate, and the second basic blade is perpendicular to the axial direction of the second shaft connecting plate. The fan assembly of the present utility model sets the second fan as a centrifugal fan blade. Compared with an impeller with a more complex structure, there is no need to set a hub, and the manufacturing cost of the second fan is lower.

[0012] Optionally, the second shaft connecting plate is located on the side of the first fan facing away from the cooking cavity, and the second centrifugal blade is located on the side of the second basic blade facing the cooking cavity or away from the cooking cavity. In the fan assembly of the present utility model, the second centrifugal blade can be arranged on the side of the second basic blade facing the cooking cavity, so that the opening of the second fan faces the cooking cavity, facilitating the second fan to have a greater air intake and air outlet effect. Alternatively, the second centrifugal blade can also be arranged on the side of the second basic blade facing away from the cooking cavity, that is, the opening direction of the second fan is opposite to the cooking cavity, thereby sucking the air on the side of the second fan away from the cooking cavity and blowing it out radially outward, and the large air volume and large air pressure air outlet effect of the fan assembly can also be achieved.

[0013] Optionally, the fan assembly further includes a motor. The motor body of the motor is located on the side of the second fan facing away from the first fan, and the motor shaft of the motor is coaxially connected to the first fan and the second fan. By arranging the motor body of the motor on the side of the second fan facing away from the first fan in the fan assembly of the present utility model, it is ensured that the air outlet airflow blown by each of the first fan and the second fan is not interfered by the motor body when flowing towards the cooking cavity, thereby effectively avoiding energy loss of the air outlet airflow.

[0014] Optionally, the fan assembly further includes a third fan, a first shaft sleeve, a second shaft sleeve and a nut. The motor shaft is coaxially connected to the third fan. The third fan is located between the motor body and the second fan, and the third fan blows air towards the motor body; the first shaft sleeve is sleeved on the motor shaft and clamped between the second fan and the third fan; the second shaft sleeve is sleeved on the motor shaft and clamped between the first fan and the second fan; the nut is threadedly connected to the motor shaft and presses against the side of the first fan facing away from the second fan. By arranging the third fan that blows air towards the motor body in the fan assembly of the present utility model, the heat dissipation of the motor can be accelerated to improve the service life of the motor. The settings of the first shaft sleeve and the second shaft sleeve effectively ensure the relative fixation of the first fan and the second fan in the axial direction of the motor shaft.

[0015] The cooking appliance according to an embodiment of the present utility model includes the fan assembly as described in any one of the above embodiments.

[0016] The technical advantages of the cooking appliance according to an embodiment of the present utility model are the same as those of the fan assembly in the above embodiments, and will not be elaborated here.

[0017] Optionally, the cooking utensil is an air fryer, and the air fryer further comprises a lining assembly, a pot body, a protective cover and a heating assembly, and the motor is installed on the lining assembly; the pot body is connected to the lining assembly, and the pot body defines a cooking cavity, and the first fan is located on the side of the second fan facing the cooking cavity; the protective cover is connected to the lining assembly, and a protective cavity is defined between the protective cover and the lining assembly, and the protective cavity is separated from the cooking cavity by the protective cover, and the first fan and the second fan are both located in the protective cavity, and the protective cover is provided with ventilation holes; the heating assembly is connected to the lining assembly and located in the protective cavity. The cooking utensil of the utility model sets the heating assembly in the protective cavity, and the circulating airflow generated by the first fan and the second fan when working is heated when passing through the heating assembly to form high-temperature gas, so as to achieve high-temperature baking of the food in the cooking cavity. In addition, the protective cover separates the first fan, the second fan and the heating assembly from the cooking cavity, effectively preventing the first fan, the second fan and the heating assembly from being exposed, and the air fryer is highly safe to use.

[0018] Optionally, the heating assembly includes a first heating tube, which is located on the side of the first fan away from the second fan, or the first heating tube extends along the circumference of the first fan and is located on the outer peripheral side of the first fan; and / or the heating assembly includes a second heating tube, which is located on the side of the second fan away from the first fan. The cooking utensil of the utility model is provided with a first heating tube located on the side of the first fan away from the second fan, so that the airflow generated by the first fan and the second fan when working first penetrates the food and then enters the protective cavity to collide with the heating assembly. The energy loss caused by the collision between the airflow and the heating assembly will not affect the flow rate of the airflow before penetrating the food, and the penetration of the food is good. Alternatively, the first heating tube is arranged to extend along the circumference of the first fan and be located on the outer peripheral side of the first fan, which effectively avoids the first heating tube and the fan assembly being too large in height and encroaching on the space of the cooking cavity. And / or, a second heating tube is arranged on the side of the second fan away from the first fan, which can heat the gas while not hindering the flow of gas initially entering the storage cavity and about to be discharged from the storage cavity, thereby effectively ensuring the gas flow speed in the cooking cavity and ensuring the large air volume and high air pressure cooking requirements for the food in the cooking cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a cooking utensil according to an embodiment of the utility model.

[0020] Figure 2 yes Figure 1 A magnified image of.

[0021] Figure 3 2 is another cross-sectional view of the cooking utensil according to the embodiment of the present invention.

[0022] Figure 4 is Figure 1 the enlarged view B of

[0023] Figure 5 is another cross-sectional view of the cooking appliance according to an embodiment of the present utility model.

[0024] Figure 6 is Figure 5 the enlarged view C of

[0025] Reference numerals:

[0026] 1, first fan; 11, first blade; 111, first basic blade; 112, first centrifugal blade; 12, first shaft connecting plate; 2, second fan; 21, second blade; 211, second basic blade; 212, second centrifugal blade; 22, second shaft connecting plate; 3, third fan; 4, motor; 5, inner lining assembly; 6, pot body; 7, first heating tube; 8, second heating tube; 9, protective cover; 10, nut; 110, first shaft sleeve; 120, second shaft sleeve. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0028] Below in conjunction with Figures 1 - 6 describe the fan assembly according to an embodiment of the present utility model.

[0029] The fan assembly of the embodiment of the present utility model includes a first fan 1 and a second fan 2. The first fan 1 and the second fan 2 are coaxial and arranged at intervals along the axial direction of the first fan 1. The first fan 1 includes a plurality of first blades 11 arranged at intervals along the circumferential direction of the first fan 1. The diameters of the circumscribed circles at each position of the plurality of first blades 11 are all equal. The second fan 2 includes a plurality of second blades 21 arranged at intervals along the circumferential direction of the second fan 2. The diameters of the circumscribed circles at each position of the plurality of second blades 21 are all equal.

[0030] According to the fan assembly of the embodiment of the present utility model, the first fan 1 and the second fan 2 are coaxial and arranged at intervals along the axial direction of the first fan 1. When the first fan 1 rotates, the second fan 2 can rotate synchronously with the first fan 1. At this time, the first fan 1 can be arranged on the side of the second fan 2 facing the cooking cavity. The first fan 1 rotates to suck the gas in the cooking cavity and discharge most of the gas radially outward to the cooking cavity. At the same time, a part of the gas sucked by the first fan 1 is also blown to the second fan 2, and the second fan 2 rotates to discharge this part of the gas radially outward to the cooking cavity, thereby avoiding the energy loss caused by this part of the gas hitting the wall surface, ensuring that the overall air volume and air pressure of the first fan 1 and the second fan 2 are larger, and the cooking efficiency of the ingredients located in the cooking cavity is higher.

[0031] It should be noted that the motor shaft of the motor 4 is coaxially connected to each of the first fan 1 and the second fan 2 to realize the synchronous rotation of the first fan 1 and the second fan 2. In addition, the diameter of the circumscribed circle at each position of the first blade 11 of the first fan 1 is less than or equal to the diameter of the circumscribed circle at each position of the second blade 21 of the second fan 2.

[0032] In some embodiments, as Figure 2 shown, the first fan 1 further includes a first shaft connecting plate 12. The first blade 11 includes a first basic blade 111 and a first centrifugal blade 112 that are connected and angled. One end of the first basic blade 111 is connected to the outer peripheral edge of the first shaft connecting plate 12, and the first basic blade 111 is perpendicular to the axial direction of the first shaft connecting plate 12.

[0033] That is, the first fan 1 is a centrifugal fan blade. Compared with an impeller with a more complex structure, a hub does not need to be provided, and the manufacturing cost of the first fan 1 is lower.

[0034] Exemplarily, a plurality of first blades 11 are arranged at intervals along the circumferential direction of the first shaft connecting plate 12, and the upper edge of the first centrifugal blade 112 is connected to the edge of the first basic blade 111 opposite in the circumferential direction of the first shaft connecting plate 12.

[0035] In some embodiments, as Figures 1 - 6 shown, the first shaft connecting plate 12 is located on the side of the second fan 2 facing the cooking cavity, and the first centrifugal blade 112 is located on the side of the first basic blade 111 facing the cooking cavity. That is, the opening of the first fan 1 faces the cooking cavity, so as to facilitate the first fan 1 to have better air suction and air discharge effects.

[0036] Exemplarily, the first centrifugal blade 112 is located below the first basic blade 111, the first fan 1 is located above the cooking cavity, and the opening of the first fan 1 faces downward.

[0037] In some embodiments, as Figure 2As shown, the second fan 2 further includes a second shaft connecting plate 22. The second blade 21 includes a second basic blade 211 and a second centrifugal blade 212 that are connected and angled. One end of the second basic blade 211 is connected to the outer peripheral edge of the second shaft connecting plate 22, and the second basic blade 211 is perpendicular to the axis of the second shaft connecting plate 22.

[0038] That is, the second fan 2 is a centrifugal fan blade. Compared with an impeller with a more complex structure, a hub does not need to be provided, and the manufacturing cost of the second fan 2 is lower.

[0039] Exemplarily, a plurality of second blades 21 are arranged at intervals along the circumferential direction of the second shaft connecting plate 22, and the upper edge or the lower edge of the second centrifugal blade 212 is connected to the edge of the second basic blade 211 that is opposite in the circumferential direction of the second shaft connecting plate 22.

[0040] In some embodiments, the second shaft connecting plate 22 is located on the side of the first fan 1 away from the cooking cavity, and the second centrifugal blade 212 is located on the side of the second basic blade 211 facing the cooking cavity or away from the cooking cavity.

[0041] That is, the opening of the second fan 2 can face the cooking cavity, so as to facilitate the second fan 2 to have a greater air suction and air outlet effect. Or, the opening direction of the second fan 2 is opposite to the cooking cavity, so that the air on the side of the second fan 2 away from the cooking cavity is sucked in and blown out radially outward, and the large air volume and large air pressure air outlet effect of the fan assembly can also be realized.

[0042] Exemplarily, as Figure 1 and Figure 2 shown, the second centrifugal blade 212 is located below the second basic blade 211, and the opening of the second fan 2 faces downward. As Figures 3 - 6 shown, the second centrifugal blade 212 is located above the second basic blade 211, and the opening of the second fan 2 faces upward.

[0043] In some embodiments, as Figure 1 、 Figure 3 and Figure 5 shown, the fan assembly further includes a motor 4. The motor body of the motor 4 is located on the side of the second fan 2 away from the first fan 1, and the motor shaft of the motor 4 is coaxially connected to the first fan 1 and the second fan 2.

[0044] That is, the motor body of the motor 4 is located on the side of each of the first fan 1 and the second fan 2 away from the cooking cavity, so as to ensure that the air outlet airflow blown out by each of the first fan 1 and the second fan 2 is not interfered by the motor body when flowing toward the cooking cavity, and thus effectively avoid energy loss of the air outlet airflow.

[0045] In some embodiments, as Figures 1 - 6As shown, the fan assembly also includes a third fan 3, a first sleeve 110, a second sleeve 120 and a nut 10. The motor shaft is coaxially connected to the third fan 3, the third fan 3 is located between the motor body and the second fan 2, and the third fan 3 blows air toward the motor body. The first sleeve 110 is sleeved on the motor shaft and sandwiched between the second fan 2 and the third fan 3. The second sleeve 120 is sleeved on the motor shaft and sandwiched between the first fan 1 and the second fan 2. The nut 10 is threadedly connected to the motor shaft and pressed against the side of the first fan 1 away from the second fan 2.

[0046] By providing the third fan 3 blowing air toward the motor body, the heat dissipation of the motor 4 can be accelerated to increase the service life of the motor 4. The provision of the first sleeve 110 and the second sleeve 120 effectively ensures that the first fan 1 and the second fan 2 are relatively fixed in the axial direction of the motor shaft.

[0047] For example, a heat insulation plate is provided between the third fan 3 and the second fan 2 to prevent the hot air in the cooking cavity from blowing toward the motor body. In addition to the upper end surface of the first sleeve 110 being in contact with the bottom surface of the shaft connecting plate of the third fan 3, a shaft shoulder can also be provided at the portion of the motor shaft located between the second fan 2 and the third fan 3, and the upper end surface of the first sleeve 110 and the shaft connecting plate of the third fan 3 are respectively in contact with the lower end surface and the upper end surface of the shaft shoulder.

[0048] The cooking appliance according to the embodiment of the present invention comprises a fan assembly as described in any of the above embodiments.

[0049] The technical advantages of the cooking appliance according to the embodiment of the utility model are the same as the technical advantages of the fan assembly of the above-mentioned embodiment, which will not be repeated here.

[0050] In some embodiments, Figure 1 , Figure 3 and Figure 5 As shown, the cooking appliance is an air fryer, which further includes a lining assembly 5, a pot body 6, a protective cover 9 and a heating assembly. The motor 4 is installed on the lining assembly 5. The pot body 6 is connected to the lining assembly 5, and the pot body 6 defines a cooking cavity. The first fan 1 is located on the side of the second fan 2 facing the cooking cavity. The protective cover 9 is connected to the lining assembly 5, and a protective cavity is defined between the protective cover 9 and the lining assembly 5. The protective cavity is separated from the cooking cavity by the protective cover 9, and the first fan 1 and the second fan 2 are both located in the protective cavity. The protective cover 9 is provided with ventilation holes. The heating assembly is connected to the lining assembly 5 and is located in the protective cavity.

[0051] The heating component is arranged in the protective cavity. At this time, the circulating airflow generated by the first fan 1 and the second fan 2 when working is heated when passing through the heating component to form high-temperature gas, so as to achieve high-temperature baking of the food in the cooking cavity. In addition, the protective cover 9 separates the first fan 1, the second fan 2 and the heating component from the cooking cavity, effectively preventing the first fan 1, the second fan 2 and the heating component from being exposed, and the air fryer is highly safe to use.

[0052] For example, ventilation holes are provided on the bottom wall and the peripheral wall of the protective cover 9, and the gas in the cooking cavity enters the protective cavity through the ventilation holes on the bottom wall, and the gas in the protective cavity enters the cooking cavity through the ventilation holes on the peripheral wall.

[0053] In some embodiments, Figure 1 As shown, the heating assembly includes a first heating tube 7, and the first heating tube 7 is located on the side of the first fan 1 away from the second fan 2. As a result, the airflow generated by the first fan 1 and the second fan 2 when working first penetrates the food and then enters the protective cavity to collide with the heating assembly. The energy loss caused by the collision between the airflow and the heating assembly will not affect the flow rate of the airflow before penetrating the food, and the penetration of the food is good.

[0054] Or, if Figure 5 As shown, the first heating tube 7 extends along the circumference of the first fan 1 and is located on the outer peripheral side of the first fan 1. At this time, the first heating tube 7 and the fan assembly are effectively prevented from being too large in height and occupying the space of the cooking cavity, meeting the large volume requirement of the cooking cavity of the air fryer.

[0055] and / or, if Figure 3 As shown, the heating assembly includes a second heating tube 8, and the second heating tube 8 is located on the side of the second fan 2 away from the first fan 1. At this time, the second heating tube 8 can heat the gas while not hindering the flow of the gas initially entering the storage cavity and the gas to be discharged from the storage cavity, effectively ensuring the gas flow speed in the cooking cavity and ensuring the large air volume and high air pressure cooking requirements for the food in the cooking cavity.

[0056] For example, Figure 1 As shown, the heating component only includes the first heating tube 7, and the first heating tube 7 is located below the first fan 1. Figure 3 As shown, the heating component only includes the second heating pipe 8, and the second heating pipe 8 is located above the second fan 2. Figure 5 As shown, the heating component includes a first heating tube 7 and a second heating tube 8 . The first heating tube 7 is located on the outer peripheral side of the first fan 1 , and the second heating tube 8 is located above the second fan 2 .

[0057] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0059] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0061] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present utility model. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. A fan assembly, characterized in that: The invention comprises a first fan (1) and a second fan (2), wherein the first fan (1) and the second fan (2) are coaxial and arranged at intervals along the axial direction of the first fan (1); The first fan (1) comprises a plurality of first blades (11) arranged at intervals along the circumference of the first fan (1), and the diameters of the circumscribed circles of the plurality of first blades (11) at various positions are all equal; the second fan (2) comprises a plurality of second blades (21) arranged at intervals along the circumference of the second fan (2), and the diameters of the circumscribed circles of the plurality of second blades (21) at various positions are all equal.

2. The fan assembly according to claim 1, characterized in that: The first fan (1) further comprises a first shaft connecting plate (12); the first blade (11) comprises a first basic blade (111) and a first centrifugal blade (112) which are connected and angled; one end of the first basic blade (111) is connected to the outer periphery of the first shaft connecting plate (12); and the first basic blade (111) is perpendicular to the axial direction of the first shaft connecting plate (12).

3. The fan assembly according to claim 2, characterized in that: The first shaft connecting plate (12) is located on a side of the second fan (2) facing the cooking cavity, and the first centrifugal blade (112) is located on a side of the first basic blade (111) facing the cooking cavity.

4. The fan assembly according to claim 2, characterized in that: The second fan (2) further comprises a second shaft connecting plate (22); the second blade (21) comprises a second basic blade (211) and a second centrifugal blade (212) which are connected and angled; one end of the second basic blade (211) is connected to the outer periphery of the second shaft connecting plate (22); and the second basic blade (211) is perpendicular to the axial direction of the second shaft connecting plate (22).

5. The fan assembly according to claim 4, characterized in that: The second shaft connecting plate (22) is located on a side of the first fan (1) facing away from the cooking cavity, and the second centrifugal blade (212) is located on a side of the second basic blade (211) facing toward the cooking cavity or away from the cooking cavity.

6. The fan assembly according to any one of claims 1 to 5, characterized in that: The fan assembly further comprises a motor (4), the motor body of the motor (4) being located on a side of the second fan (2) facing away from the first fan (1), and the motor shaft of the motor (4) being coaxially connected to the first fan (1) and the second fan (2).

7. The fan assembly according to claim 6, characterized in that The fan assembly also includes: a third fan (3), the motor shaft being coaxially connected to the third fan (3), the third fan (3) being located between the motor body and the second fan (2), and the third fan (3) blowing air in the direction of the motor body; A first shaft sleeve (110), the first shaft sleeve (110) being sleeved on the motor shaft and sandwiched between the second fan (2) and the third fan (3); a second shaft sleeve (120), the second shaft sleeve (120) being sleeved on the motor shaft and sandwiched between the first fan (1) and the second fan (2); and A nut (10), the nut (10) being threadably connected to the motor shaft and pressed against a side of the first fan (1) facing away from the second fan (2).

8. A cooking utensil, characterized in that: Comprising a fan assembly as claimed in claim 6 or 7.

9. The cooking device according to claim 8, characterized in that: The cooking appliance is an air fryer, and the air fryer further comprises: A lining component (5), the motor (4) being mounted on the lining component (5); A pot body (6), the pot body (6) being connected to the lining assembly (5), the pot body (6) defining a cooking cavity, the first fan (1) being located on a side of the second fan (2) facing the cooking cavity; a protective cover (9), the protective cover (9) being connected to the lining component (5), a protective cavity being defined between the protective cover (9) and the lining component (5), the protective cavity being separated from the cooking cavity by the protective cover (9), the first fan (1) and the second fan (2) both being located in the protective cavity, and the protective cover (9) being provided with ventilation holes; and A heating component is connected to the lining component (5) and is located in the protective cavity.

10. The cooking appliance according to claim 9, characterized in that The heating assembly comprises a first heating tube (7), the first heating tube (7) being located on a side of the first fan (1) away from the second fan (2), or the first heating tube (7) extending along the circumference of the first fan (1) and being located on the outer circumference of the first fan (1); And / or, the heating component comprises a second heating tube (8), and the second heating tube (8) is located on a side of the second fan (2) facing away from the first fan (1).

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