CN218186464U - Air fryer - Google Patents

Abstract

The present disclosure provides an air fryer comprising a pot body assembly, a handpiece assembly and a central support assembly, wherein the pot body assembly comprises an inner pot and an outer pot, the outer pot is provided with an inner cavity, and the inner pot is rotatably arranged in the inner cavity; the machine head assembly is arranged above the pot body assembly and comprises a lower fan and a driving motor, the lower fan is positioned at the lower part of the machine head assembly and used for blowing gas to the inner pot, an output shaft of the driving motor is connected with the lower fan, and the driving motor is used for driving the lower fan to rotate; center support assembly sets up in the radial middle part of outer pot, and upwards extends along its axial protrusion from the diapire of outer pot, and interior pot rotationally supports on center support assembly, and it is more even to make the culinary art eat material to be heated, sets up center support assembly through pot below in, can reduce interior pot and rotate the frictional force between-process and the outer pot to the pot is changeed rotatoryly in making.

Description

Air fryer

Technical Field

The present disclosure belongs to the field of cooking appliances, and particularly relates to an air fryer.

Background

With the increasing living standard and the increasing demand for food, various kitchen cooking appliances, such as air fryer, have come into play.

Air fryers are devices that cook food by heating air and delivering hot air to a location where the air contacts the food using a centrifugal lower fan to heat the food.

However, in the existing air fryer, food in some positions often turns brown due to contact with heat, and food in other positions is in a half-cooked state due to contact with less heat, so that the food is heated unevenly, and the use experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

It is a primary object of the present disclosure to provide an air fryer to improve the uniformity of heating of the cooked food.

In view of the above purpose, the present disclosure provides the following technical solutions:

in one aspect of the present disclosure, an air fryer is provided, the air fryer comprising a pot body assembly, a head assembly, and a central support assembly, the pot body assembly comprising an inner pot and an outer pot, the outer pot having an interior cavity, the inner pot rotatably disposed within the interior cavity; the machine head assembly is arranged above the pot body assembly and comprises a lower fan and a driving motor, the lower fan is positioned at the lower part of the machine head assembly and used for blowing gas to the inner pot, an output shaft of the driving motor is connected with the lower fan, and the driving motor is used for driving the lower fan to rotate; the central support component is arranged at the radial middle part of the outer pot and extends upwards from the bottom wall of the outer pot along the axial protrusion of the bottom wall, and the inner pot is rotatably supported on the central support component.

This is disclosed through rotationally setting up in outer pot with interior pot, makes the culinary art eat the material and is heated more evenly, sets up central supporting component through pot below in, can reduce interior pot and rotate the frictional force between in-process and the outer pot to the pot is changeed rotatoryly in making.

In an exemplary embodiment of the present disclosure, the center support assembly includes a bearing assembly supported between the inner pot and the outer pot, the bearing assembly includes a bearing and a connecting shaft, a first end of the connecting shaft is fixed to the bearing inner race, one of the inner pot and the outer pot is fixed to the bearing outer race, and the other is detachably connected to a second end of the connecting shaft, so that the inner pot is detachably supported in the outer pot.

Optionally, the cross section of the second end of the connecting shaft is polygonal, a sinking groove used for being matched with the second end of the connecting shaft is formed in the inner pot or the outer pot, the diameter of a circumscribed circle of the sinking groove is D1, the diameter of a circumscribed circle of the second end of the connecting shaft is D2, and the requirements that the diameter of D1-D2 is more than or equal to 0.2mm and less than or equal to 1mm are met; or the cross section of the second end of the connecting shaft is semicircular, the sinking groove is cylindrical, the diameter of the sinking groove is D1, the diameter of the second end of the connecting shaft is D2, and the requirements that D1-D2 is more than or equal to 0.2mm and less than or equal to 1mm are met.

Specifically, the heavy groove is formed by sinking the lower surface of the bottom wall of the inner pan, the second end of the connecting shaft is in clearance fit with the inside of the heavy groove, the cross section of the first end of the connecting shaft is a cylinder, the diameter of the cross section of the first end of the connecting shaft is D3, and D3 < D2 is satisfied.

Furthermore, the depth of the sinking groove is H1, the connecting shaft comprises a connecting section, the connecting section is arranged at the second end of the connecting shaft, the axial height of the connecting section is H2, H2 is more than or equal to 5mm and less than or equal to 10mm, and H1 is more than H2.

In another exemplary embodiment of the present disclosure, the center support assembly includes a boss protruding upward from the bottom wall of the outer pot along an axial direction, a top surface of the boss is a spherical surface, and the inner pot is rotatably supported on the spherical surface. Therefore, the lug boss is arranged on the bottom wall of the outer pot in a protruding mode, the inner pot can be rotatably supported on the lug boss, the contact area between the inner pot and the outer pot is reduced, the friction force between the inner pot and the outer pot in the rotating process is reduced, and the inner pot can rotate more easily.

Optionally, the bottom surface of the inner pot is concavely provided with a sinking groove matched with the boss, the diameter of the sinking groove is D1, the diameter of the spherical surface is D2, and the requirements that D1-D2 are more than or equal to 0.2mm and less than or equal to 1mm are met.

Specifically, the air fryer still includes 3 at least button head archs, the diapire of interior pot with one in the diapire of outer pot is sunken be provided with the protruding annular groove that matches of button head, the annular groove is followed the diapire of interior pot or the continuous extension of diapire circumference of outer pot, 3 at least button head archs set up on another, just 3 at least button head archs are in slide or roll in the annular groove, make the diapire of interior pot with the diapire interval of outer pot sets up.

The utility model discloses another exemplary embodiment, interior pot includes interior pot body and sets up lateral wall choke flap on the interior pot body lateral wall, the lateral wall of interior pot body is followed the circumference of interior pot body is provided with a plurality of lateral wall ventilation holes, lateral wall choke flap sets up lateral wall ventilation hole is followed interior pot body circumference one side, lateral wall choke flap follows the lateral wall surface of interior pot body is outstanding to be extended to lateral wall ventilation hole is followed the radial outside of interior pot body. Therefore, the choke area of the inner pot is increased by arranging the side wall choke pieces on the inner pot, and the gas can act on the side wall choke pieces under the action of the lower fan driving gas to rotate, so that the rotating driving force of the inner pot is increased, and the inner pot can rotate in the outer pot.

Optionally, the side wall ventilation hole extends upwards along the axial inclination of the inner pan, and an included angle α between the extending direction of the side wall ventilation hole and the axis of the inner pan is equal to or greater than 0 degree and equal to or less than 45 degrees, and the inclination direction of the side wall ventilation hole is the same as the rotation direction of the lower fan.

Specifically, lateral wall choke piece includes first lamellar body and second lamellar body, first lamellar body is followed the lateral surface of the interior pot lateral wall of interior pot body is outstanding to be extended, the second lamellar body is followed the radial outer fringe of first lamellar body is buckled and is extended, makes the second lamellar body with interior pot lateral wall interval sets up, and is on a parallel with the tangent line of interior pot body.

Further, interior pot still includes diapire choke piece, the diapire of interior pot body is provided with the edge a plurality of diapire ventilation holes that the circumference interval of interior pot body set up, diapire choke piece set up in the axial below in diapire ventilation hole, diapire choke piece is followed the lower surface orientation of the diapire of interior pot body the axial below in diapire ventilation hole extends. So, set up diapire choke flap through the diapire of pot in and improved the choke area of interior pot, under the effect that fan drive gas flows down, can drive interior pot and rotate.

Drawings

The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a longitudinal cross-sectional view of an air fryer provided in accordance with a first exemplary embodiment of the present disclosure.

Fig. 2 is a longitudinal sectional view of the assembled inner pot, outer pot and center support assembly of fig. 1.

Fig. 3 is a partial enlarged view of the structure indicated by the circle I in fig. 2.

Fig. 4 is an exploded view of the inner and outer pans and the center support assembly of fig. 2.

Fig. 5 is a structure view of the inner pot in fig. 1.

Fig. 6 is a longitudinal sectional view of the inner pot of fig. 5.

Fig. 7 is a cross-sectional view of the inner pot of fig. 5.

Fig. 8 is a partially enlarged view of the structure indicated by the J-turn in fig. 7.

Fig. 9 is a partial enlarged view of the structure indicated by the circle M in fig. 2.

Fig. 10 is a longitudinal sectional view of the combined state of the inner pot, the outer pot and the central support assembly according to the second exemplary embodiment of the present disclosure.

Fig. 11 is a partially enlarged view of the structure indicated by the N-turn in fig. 10.

Description of reference numerals:

1. a pan body assembly; 2. a head assembly; 11. an inner pot; 12. an outer pot; 13. a bearing assembly; 1421. a first sheet body; 1422; a second sheet body; 121. a boss; 21. a drive motor; 22. a lower fan; 24. a heating body; 25. a wind scooper; 26. a cover body; 110. an inner pot body; 111. a sidewall vent; 112. a sidewall choke sheet; 113. a bottom wall vent; 114. a bottom wall choke flap; 115. sinking a groove; 116. a backflow plate; 117. an oil leak hole; 118. a slot; 131. a bearing; 132. a connecting shaft; 210. an output shaft; 1121. a first sheet body; 1122. a second sheet body; 1141. a guide edge; 1142. a connecting edge;

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the embodiments of the present disclosure are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Referring to FIG. 1, the present disclosure provides an air fryer comprising a pot assembly 1 and a head assembly 2.

Head assembly 2 may be pivotally attached to one side of pan assembly 1 to form the air fryer as a clamshell air fryer, but is not so limited.

Head assembly 2 includes a cover 26, a heating body 24, a lower fan 22, and a drive motor 21.

The lid 26 can be closed over the top edge of the outer pot 12 (see below) to cooperate with the outer pot 12 to form the internal cavity as a cooking cavity. To facilitate viewing of cooking conditions within pan assembly 1, cover 26 may be a transparent structure, such as, but not limited to, cover 26 being a glass cover. Optionally, the cover 26 is a high temperature resistant glass cover, but not limited thereto.

A heating body 24 is provided under the cover 26 to be able to protrude into the cooking chamber and heat the gas therein. By way of example, the heating body 24 provided by the present disclosure is an annular heating tube that extends continuously along the circumferential direction of the cover 26, but is not limited thereto.

The lower fan 22 is rotatably disposed between the heating body 24 and the cover 26 to blow the gas heated by the heating body 24 into the inner pot 11, but not limited thereto. The driving motor 21 is used to drive the lower fan 22 to rotate, and as an example, an output shaft 210 of the driving motor 21 is fixed to the lower fan 22 to transmit the power of the driving motor 21 to the lower fan 22.

In order to improve the safety of the air fryer and prevent the lower fan 22 from accidentally touching the user, the handpiece assembly 2 in this embodiment further includes a wind guiding cover 25, and the wind guiding cover 25 is disposed below the cover 26 and covers the heating body 24, but not limited thereto. In order to improve the smoothness of the hot air flowing in the air fryer, the air guiding cover 25 is provided with a plurality of air vents, but not limited thereto.

The pot body assembly 1 comprises an outer pot 12 and an inner pot 11 for containing food, wherein the outer pot 12 can be provided with an inner cavity, and the inner pot 11 can be detachably placed in the inner cavity so as to be convenient for the inner pot 11 to be taken out and cleaned. The outer pot 12 can be used for heat preservation or heat insulation of the inner pot 11, so that heat leakage is avoided, and the utilization rate of energy is improved.

In order to improve the heating uniformity of the food, the inner pot 11 is rotatably arranged in the outer pot 12. The pot body assembly 1 provided by the disclosure can utilize the driving motor 21 as a power source, the lower fan 22 rotates to drive air to flow, the inner pot 11 is driven to rotate around the axis of the inner pot, no additional power source needs to be provided, the rotation of the inner pot 11 can be realized by the driving motor 21 of the lower fan 22, the structure of an air frying pot is simplified, and the manufacturing cost is reduced.

In this embodiment, the driving of the inner pot 11 by the driving motor 21 is indirect driving, that is, the driving motor 21 and the inner pot 11 do not contact directly, but the lower fan 22 is driven to rotate by the rotation of the driving motor 21, the lower fan 22 drives the air in the cooking cavity to flow, and the air flow acts on the inner pot 11 to drive the inner pot 11 to rotate.

With continued reference to fig. 1, in particular, the present embodiment provides an air fryer, which includes an outer pot 12, an inner pot 11, a lower fan 22 and a driving motor 21 for driving the lower fan 22 to rotate, wherein the outer pot 12 has an internal cavity, the inner pot 11 is rotatably disposed in the internal cavity, and the driving motor 21 can drive the lower fan 22 to rotate and drive the inner pot 11 to rotate around the central axis thereof.

In order to reduce the friction force during the rotation of the inner pot 11, the air fryer further comprises a central support assembly disposed at the radial middle portion of the outer pot 12 and protruding upward from the bottom wall of the outer pot 12 along the axial direction thereof, and the inner pot 11 is rotatably supported on the central support assembly.

Referring to fig. 1 to 3, the center support assembly includes a bearing assembly 13 to reduce friction during rotation of the inner pot 11 relative to the outer pot 12.

Specifically, the bearing assembly 13 is supported between the inner pot 11 and the outer pot 12, the bearing assembly 13 includes a bearing 131 and a connecting shaft 132, a first end of the connecting shaft 132 is fixed to the inner ring of the bearing, one of the inner pot 11 and the outer pot 12 is fixed to the outer ring of the bearing, and the other is detachably connected to a second end of the connecting shaft 132, so that the inner pot 11 is detachably supported in the outer pot 12.

In this embodiment, the connecting shaft 132 extends substantially along the axial direction of the inner pot 11, and the first end of the connecting shaft 132 is taken as the bottom end, and the second end is taken as the top end for illustration.

The bottom end of the connecting shaft 132 is in interference fit with the bearing inner ring, so that the connecting shaft 132 and the bearing 131 are connected to form the bearing assembly 13, and the bearing outer ring is in interference fit with the bottom wall of the outer pot 12, so that the bearing 131 is stably arranged on the outer pot 12. The sunken heavy groove 115 that is provided with of the diapire of interior pot 11, the top and the heavy groove 115 clearance fit of connecting axle 132 make things convenient for put into outer pot 12 inner chamber or take out from outer pot 12 inner chamber with interior pot 11.

In order to allow the connecting shaft 132 and the inner pot 11 to rotate simultaneously, the second end of the connecting shaft 132 has a non-circular cross-section to prevent relative rotation between the connecting shaft 132 and the sink 115.

In order to facilitate the matching of the inner pot 11 with the connecting shaft 132, the second end of the connecting shaft 132 may be polygonal, for example, but not limited to, regular polygon, and the sinking groove 115 may be capable of matching with the second end (top end) of the connecting shaft 132, for example, but not limited to, the sinking groove 115 may be cylindrical sinking groove. Since the sinking groove 115 is formed in the bottom wall of the inner pot 11 and is not visible to a user when being combined with the connecting shaft 132, the probability of matching the sinking groove 115 with the second end of the connecting shaft 132 is increased by forming the second end of the connecting shaft 132 as a regular polygon, thereby facilitating the user's assembly.

As an example, the circumscribed circle diameter of the sinking groove 115 is D1, and the circumscribed circle diameter D2 of the top end of the connecting shaft 132 satisfies 0.2 mm. Ltoreq.D 1-D2. Ltoreq.1 mm.

When the distance between the sinking groove 115 and the side wall at the top end of the connecting shaft 132 is too large, the sinking groove 115 may generate a certain degree of idle stroke, and even the sinking groove 115 does not contact with the side wall of the connecting shaft 132, so that the inner pot 11 may swing or rock freely above the connecting shaft 132, the support is unreliable, and the smooth rotation of the inner pot 11 is affected. When the distance between the sinking groove 115 and the side wall of the top end of the connecting shaft 132 is too small, the inner pot 11 is not smoothly matched with the connecting shaft 132, and a user needs to take effort to insert the top end of the connecting shaft 132 into the sinking groove 115 of the inner pot 11, or to separate the inner pot 11 from the top end of the connecting shaft 132.

In addition, it is within the scope of the present disclosure that the second end of the connecting shaft 132 be semi-circular in cross-section.

Further, the sinking groove 115 is formed by inwards sinking from the bottom wall of the inner pot 11, the second end of the connecting shaft 132 is supported in the sinking groove 115 in a clearance fit manner, the cross section of the first end of the connecting shaft 132 is a cylinder, the diameter of the cross section of the first end of the connecting shaft 132 is D3, and D3 < D2 is satisfied. In this way, the first end of the connecting shaft 132 can provide stable support to the inner pot 11.

In order to avoid accidental touch between the bottom wall of the inner pot 11 and the bottom wall of the outer pot 12, the depth of the sinking groove 115 is H1, the connecting shaft 132 may include a connecting section, the connecting section is disposed at the second end of the connecting shaft 132, the height of the connecting section is H2, and it is satisfied that H2 is greater than or equal to 5mm and less than or equal to 10mm, and H1 is greater than H2. Thus, a predetermined gap is ensured to be arranged between the bottom wall of the inner pot 11 and the bottom wall of the outer pot 12, and the inner pot 11 is prevented from shaking relative to the first end of the connecting shaft 132 and accidentally touching the bottom wall of the outer pot 12.

In this embodiment, the bearing 131 is disposed between the connecting shaft 132 and the outer pot 12, and may be disposed between the connecting shaft 132 and the inner pot 11, but not limited thereto.

In the present disclosure, the bearing assembly 13 is disposed between the inner pot 11 and the outer pot 12, so that the frictional resistance of the inner pot 11 in the rotation process relative to the outer pot 12 is reduced, and the inner pot 11 can smoothly rotate around its own axis.

In order to increase the windward resistance area of the inner pan 11, in the embodiment, a plurality of side wall wind blocking sheets 112 are arranged on the inner pan 11, the side wall wind blocking sheets 112 are arranged along the circumferential direction of the inner pan 11, so that the air can be driven to flow downwards spirally during the rotation of the lower fan 22, and when the air flow acts on the side wall wind blocking sheets 112, the air flow generates driving force to the inner pan 11, so that the inner pan 11 can rotate around the axis thereof.

Specifically, the inner pan 11 includes an inner pan body 110 and a side wall choke sheet 112, the side wall of the inner pan body 110 is provided with a plurality of side wall vent holes 111 along the circumference of the inner pan body 110, at least a portion of the plurality of side wall vent holes 111 is provided with a side wall choke sheet 112 along the rear side in the windward direction, and the side wall choke sheet 112 protrudes and extends from the side wall of the inner pan body 110 to extend to the outside of the side wall vent holes 111 along the radial direction of the inner pan body 110. In the present disclosure, the opposite direction of the flow direction of the gas is the windward direction.

In order to increase the gas throughput of the side wall vent holes 111, to increase the contact of more hot gas with food, and to increase the energy utilization rate, the side wall vent holes 111 extend obliquely upward along the axial direction of the inner pot 11, and the oblique direction of the side wall vent holes 111 is the same as the rotation direction of the lower fan 22, as shown in fig. 4, for example, but not limited to, when the lower fan 22 rotates counterclockwise, the side wall vent holes 111 extend obliquely upward along the counterclockwise direction, so that the oblique direction of the side wall vent holes 111 is substantially perpendicular to the flow direction of the gas, i.e., the extending direction of the side wall vent holes 111 is perpendicular to the windward direction, so that more gas can pass through the side wall vent holes 111.

Referring to FIG. 6, as an example, an angle α between the extending direction of the side wall vent holes 111 and the axis of the inner pot 11 satisfies 0 ≦ α ≦ 45 °, but not limited thereto.

Further, the side wall choke sheet 112 extends upwards along the axial direction of the inner pot 11 in an inclined manner, and an included angle beta between the extending direction of the side wall choke sheet 112 and the axis of the inner pot 11 is larger than or equal to 0 degree and smaller than or equal to 45 degrees, so that the side wall choke sheet 112 can intercept more gas, and more gas can pass through the side wall vent holes 111, and the energy utilization rate is further improved.

In order to make the gas pushed by the lower fan 22 flow to the outside of the inner pot 11 as much as possible so as to make the gas contact with the side wall choke sheet 112 as much as possible, the lowest point of the lower fan 22 is located above the top end edge of the inner pot body 110, the vertical distance between the lower fan 22 and the top end edge of the outer pot 12 is smaller than the vertical distance between the lower fan and the top end edge of the inner pot 11, that is, the top end edge of the inner pot 11 is located below the top end edge of the outer pot 12, at this time, the gas driven by the lower fan 22 flows downwards spirally so as to enter the gap between the inner pot body 110 and the outer pot 12, and can contact with the side wall choke sheet 112 and push the side wall choke sheet 112.

In order to further improve the wind-blocking effect of the side wall wind-blocking sheet 112, the distance Lr between the outer wall of the inner pot body 110 and the inner wall of the outer pot 12 satisfies 5mm Lr 15mm. If Lr is too small, the space outside the inner pot body 110 is too small, the side wall choke pieces 112 are small in size, and the contact area between the side wall choke pieces 112 and the gas is small, so that the thrust force applied to the side wall choke pieces 112 is insufficient, and it is difficult to achieve a predetermined rotation speed of the inner pot 11. If Lr is too large, the space outside the inner pot body 110 is too large, and the gas pushed by the lower fan 22 cannot reach the side wall choke sheet 112, so that it is difficult to push the inner pot 11 to rotate.

Referring to fig. 7 to 8, in the present embodiment, the side wall wind blocking piece 112 includes a first piece 1121 and a second piece 1122, the first piece 1121 protrudes from an outer side surface of the inner pot side wall of the inner pot body 110, and the second piece 1122 bends from a radial outer edge of the first piece 1121 to extend, so that the second piece 1122 is spaced apart from the inner pot side wall and is parallel to a tangent line of the inner pot body 110.

Specifically, the second sheet body 1122 is spaced apart from the sidewall of the inner pot body 110, and the second sheet body 1122 is disposed on the radial outer side of the inner pot body 110 and parallel to the tangent line of the inner pot body 110, so as to form an air channel between the second sheet body 1122 and the inner pot body 110, and the second sheet body 1122 is used for guiding air, so that the air can smoothly pass through the sidewall vent 111, and mainly plays a role in guiding the air.

The first sheet 1121 is connected between the second sheet 1122 and the outer wall of the inner pot body 110, the first sheet 1121 is disposed at the rear side of the side wall vent hole 111 along the windward direction, the gas flows along the second sheet 1122 to contact the first sheet 1121, the flow direction of the gas is substantially perpendicular to the direction of the first sheet 1121, and the inner pot 11 can be driven to rotate around its own axis by generating a thrust on the first sheet 1121.

Specifically, the gas contacting and colliding with the first sheet 1121 will flow along the extending direction of the first sheet 1121, i.e., the gas after contacting with the first sheet 1121 changes the flow direction to flow inward along the radial direction of the inner pot 11 to pass through the side wall ventilation holes 111 and enter the cavity of the inner pot 11 to contact with food for cooking the food.

In this embodiment, the first sheet 1121 and the second sheet 1122 cooperate to guide the gas and enable the gas to push the side wall choke sheet 112 to drive the inner pot 11 to rotate around its own axis.

With reference to fig. 8, in order to reduce the obstruction to the gas, the inner radial arc surface of the joint of the first sheet 1121 and the second sheet 1122 is transited, and the gas can smoothly enter the inner cavity of the inner pot 11 through the side wall vent holes 111 by the guiding action of the arc surface transition, so as to avoid the gas from generating turbulence at the side wall choke flap 112. Optionally, the extending direction of the first sheet 1121 is disposed substantially parallel to the extending direction of the side wall ventilation hole 111 to further avoid blocking of the air flow. Further, the first sheet 1121 and the second sheet 1122 are substantially vertically disposed, but not limited thereto.

Further, the side wall wind blocking sheet 112 further includes a first end sheet and a second end sheet, which respectively extend from two ends of the second sheet 1122 to the corresponding end of the first sheet 1121 and the outer wall of the inner pot 11, so that the side wall wind blocking sheet 112 surrounds the side wall vent holes 111 and forms a U-shaped wind collecting groove, and the opening of the wind collecting groove faces a circumferential tangential direction parallel to the inner pot body 110.

In order to further increase the force bearing area of the side wall choke flap 112, the radial distance between the second sheet body 1122 and the side wall of the inner pot body 110 along the inner pot 11 is L, the diameter of the inner pot body 110 is D, and the requirement that L/D is greater than or equal to 0.02 and less than or equal to 0.075 is met, so that the inner pot 11 can be rotated by the thrust of the gas borne by the side wall choke flap 112, and the heating uniformity of food is improved.

In the embodiment, the side wall choke pieces 112 are arranged on the inner pot 11, the driving motor 21 can be effectively used as a power source for rotating the inner pot 11, the power of the driving motor 21 is transmitted to the inner pot 11 by virtue of the airflow in the cooking cavity, and no additional power source is needed, so that the structure of the air fryer is simplified, and the manufacturing cost of the air fryer is reduced.

Besides, the side wall choke sheet 112 is arranged on the side wall of the inner pot 11, so that the inner pot 11 can be driven to rotate by the gas in the cooking cavity, the heating uniformity of the food in the inner pot 11 is improved, and the taste of the food is improved. Further, by arranging the side wall choke pieces 112, more gas enters the inner cavity of the inner pot 11 along the radial direction of the inner pot 11 to contact with food, more heat in the gas is used for cooking the food, and therefore the utilization rate of energy is improved.

Specifically, after the driving motor 21 is started, the lower fan 22 will rotate around the output axis of the driving motor 21 under the driving of the driving motor 21, so as to drive the gas in the cooking cavity to centrifugally flow from the position of the lower fan 22 along the radial direction of the inner pot 11, and to spirally flow downwards, after the gas with a predetermined speed meets the side wall wind blocking sheet 112 on the inner pot 11, the gas will be pushed by the gas, and under the pushing of the gas, the inner pot 11 will rotate around its own axis. As an example, when the driving motor 21 is started, the heating body 24 may be simultaneously started to heat the gas in the cooking cavity to heat the food material, and therefore, the gas may be hot air, but is not limited thereto.

With continued reference to fig. 2 and 4 to 6 and 9, the inner pot 11 further includes a bottom wall choke sheet 114, the bottom wall of the inner pot body 110 is provided with a plurality of bottom wall vent holes 113 arranged along the circumferential direction of the inner pot body 110 at intervals, the bottom wall choke sheet 114 extends from the bottom wall of the inner pot body 110 toward the axial outer side of the bottom wall vent holes 113, that is, the bottom wall choke sheet 114 is arranged below the bottom wall vent holes 113 so as to be capable of contacting with the gas below the inner pot body 110, and the inner pot 11 can rotate around the axis thereof under the pushing action of the gas.

Further, in order to allow as much gas as possible to enter the space outside the inner pot body 110 to be in contact with the bottom wall choke sheet 114, the lowest point of the lower fan 22 is located above the top end edge of the inner pot body 110, and the axial distance between the lower fan 22 and the top end edge of the inner pot 11 is greater than the axial distance between the lower fan 22 and the top end edge of the outer pot 12.

Optionally, the bottom wall vent holes 113 extend spirally from the middle to the edge of the inner pot body 110 in the windward direction, so that the air under the inner pot body 110 can enter the cavity of the inner pot 11 through the bottom wall vent holes 113 as much as possible, and the heat in the air is used for cooking food as much as possible, thereby improving the utilization rate of energy.

With continued reference to fig. 9, specifically, the bottom wall choke sheet 114 includes a guiding edge 1141 and a connecting edge 1142, the guiding edge 1141 is substantially parallel to the bottom wall of the inner pot body 110 to gather and guide the air below the inner pot 11, the connecting edge 1142 is connected between the guiding edge 1141 and the bottom wall of the inner pot body 110, and the air vertically acts on the connecting edge 1142 to push the bottom wall choke sheet 114 and further push the inner pot 11 to rotate.

By way of example, the connecting edge 1142 is disposed substantially perpendicular to the bottom wall of the inner pan 11 to increase the effective frontal area. Further, the guide plate 1141 is substantially parallel to the bottom wall of the inner pot 11 to increase an effective receiving area.

In order to improve the flowing smoothness of the gas and avoid the occurrence of turbulent flow of the gas at the bottom wall choke plate 114, the junction of the guiding edge 1141 and the connecting edge 1142 is in arc transition, and the gas can be in smooth transition at the bottom wall choke plate 114.

Further, the bottom wall choke flap 114 forms a U-shaped wind-collecting groove around the bottom wall vent hole 113, and the openings of the plurality of U-shaped wind-collecting grooves face a direction parallel to the circumferential tangential direction of the inner pot body 110.

In order to increase the driving force of the gas to the inner pot 11, in the present embodiment, the side wall of the inner pot body 110 is provided with the side wall choke piece 112, and the bottom wall of the inner pot body 110 is provided with the bottom wall choke piece 114, so as to increase the driving force of the gas to the inner pot 11, enable the inner pot 11 to rotate smoothly, and improve the heating uniformity of the food, but not limited thereto. It is within the scope of the present disclosure to provide the bottom wall choke flap 114 on the bottom wall of the inner pot body 110 and not provide the side wall choke flap 112 on the side wall.

According to the air fryer provided by the embodiment, the side wall choke pieces 112 and the bottom wall choke pieces 114 are arranged on the inner pot 11, more gas can be introduced into the inner pot 11 to be contacted with food, more heat in the gas is used for cooking, and therefore the energy utilization rate is improved.

Specifically, after the user adds the food material to the inner pan 11, the head assembly 2 is closed, and then the start button may be activated to start cooking the food material. The heating body 24 can be heated first, after the preset temperature is reached, the driving motor 21 is started to drive the lower fan 22 to rotate, the lower fan 22 drives gas to flow outwards along the radial direction of the inner pot 11, and the gas flows downwards along the spiral of the outer wall of the inner pot 11 after being heated by the heating body 24, so that the gas flows through the side wall wind-blocking sheets 112 as much as possible and pushes the inner pot 11 to rotate around the axis of the gas, the food material is heated more uniformly, and the taste of food is improved.

In addition, referring to fig. 10 and 11, a second exemplary embodiment of the present disclosure provides an air fryer, which is different from the first embodiment in that a center support assembly in the present embodiment includes a setting boss 121 protrudingly provided from a bottom wall of an outer pot 12 to form a point support with an inner pot 11, thereby reducing friction during rotation of the inner pot 11 with respect to the outer pot 12.

Specifically, the bottom wall of the outer pot 12 is provided with a boss 121 protruding upwards along the axial direction, the top end of the boss 121 is spherical, and the inner pot 11 is rotatably supported on the spherical surface. Illustratively, the top end of the boss 121 extends into the countersunk groove 115 such that the top end of the boss 121 is supported on the bottom of the countersunk groove 115 to provide point support between the countersunk groove 115 and the boss 121, thereby reducing the frictional force between the connecting shaft 132 and the inner pan 11. In the embodiment, the sink 115 is a cylindrical sink, but not limited thereto. In the embodiment, the top end of the boss 121 is set to be spherical, so that the contact area between the boss 121 and the sink groove 115 of the inner pot 11 is reduced, and the purpose of reducing friction force is achieved.

In addition, the sinking groove 115 may be formed as a spherical sinking groove to match the spherical surface of the boss 121, but not limited thereto.

As an example, the bottom surface of the inner pan 11 is concavely provided with a sinking groove 115, the diameter of the sinking groove 115 is D1, the diameter of the spherical surface is D2, and the requirement that D1-D2 is more than or equal to 0.2mm and less than or equal to 1mm is satisfied, on one hand, the inner pan 11 can be conveniently installed on the connecting shaft 132, and on the other hand, the inner pan 11 can smoothly rotate on the connecting shaft 132.

The boss 121 may be formed separately from the outer pot 12 and then assembled together by a welding process, or the boss 121 and the outer pot 12 may be integrally formed by a casting process, all of which are within the protection scope of the present disclosure. In addition, the top end of the boss 121 may have a 3/4 spherical surface, or a 1/2 spherical surface, or a 1/3 spherical surface, all of which are within the scope of the present disclosure.

Further, in this embodiment, the air fryer also includes at least 3 round protrusions (not shown), and the round protrusions are disposed between the bottom wall of the inner pot 11 and the bottom wall of the outer pot 12 to reduce the friction between the inner pot 11 and the outer pot 12. Specifically, one sunken being provided with the annular groove that matches with the button head arch in the diapire of interior pot 11 and the diapire of outer pot 12, this annular groove along the diapire of interior pot 11 or the continuous extension of diapire circumference of outer pot 12, 3 at least button head archs set up on another, 3 at least button head archs roll or slide in the annular groove to the diapire that makes interior pot 11 and outer pot 12 set up at the diapire interval, thereby reduce the frictional force between interior pot 11 and the outer pot 12, pot 11 rotates smoothly in the convenience.

In this embodiment, the round head protrusion is rotatably connected to the bottom wall of the inner pot 11, and the annular groove is formed in the bottom wall of the outer pot 12. In order to simplify the description, the round head protrusion is only arranged between the inner pot 11 and the outer pot 12 in the present embodiment, besides, the bottom wall of the outer pot 12 may be provided with the boss 121, and the boss 121 and the round head protrusion are matched to realize the reliable support of the inner pot 11 in the outer pot 12, which is within the protection scope of the present disclosure. Alternatively, it is also within the scope of the present disclosure that the knobs may cooperate with the bearing assembly 13 to provide a secure support for the inner pan 11.

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, and for example, may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or communicatively connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (12)

1. An air fryer, comprising:

the pot body assembly (1) comprises an inner pot (11) and an outer pot (12), wherein the outer pot (12) is provided with an inner cavity, and the inner pot (11) is rotatably arranged in the inner cavity;

the machine head assembly (2) is arranged above the pot body assembly (1), the machine head assembly (2) comprises a lower fan (22) and a driving motor (21), the lower fan (22) is located at the lower portion of the machine head assembly (2) and used for blowing air to the inner pot (11), an output shaft (210) of the driving motor (21) is connected to the lower fan (22), and the driving motor (21) is used for driving the lower fan (22) to rotate;

the central support component is arranged in the radial middle of the outer pot (12) and extends upwards from the bottom wall of the outer pot (12) along the axial projection of the outer pot, and the inner pot (11) is rotatably supported on the central support component.

2. An air fryer according to claim 1, wherein the central support assembly comprises a bearing assembly (13) supported between the inner pot (11) and the outer pot (12), the bearing assembly (13) comprising a bearing (131) and a connecting shaft (132), a first end of the connecting shaft (132) being fixed to an inner bearing ring, one of the inner pot (11) and the outer pot (12) being fixed to an outer bearing ring, the other being detachably connected to a second end of the connecting shaft (132) such that the inner pot (11) is detachably supported within the outer pot (12).

3. The air fryer according to claim 2, wherein the cross section of the second end of the connecting shaft (132) is polygonal, the inner pot (11) or the outer pot (12) is provided with a sinking groove (115) matched with the second end of the connecting shaft (132), the diameter of a circumscribed circle of the sinking groove (115) is D1, the diameter of a circumscribed circle of the second end of the connecting shaft (132) is D2, and the requirements that D1 is more than or equal to 0.2mm and D2 is less than or equal to 1mm are met; or the like, or, alternatively,

the cross section of the second end of the connecting shaft (132) is semicircular, the sinking groove (115) is cylindrical, the diameter of the sinking groove (115) is D1, the diameter of the second end of the connecting shaft (132) is D2, and the requirement that D1-D2 is more than or equal to 0.2mm and less than or equal to 1mm is met.

4. The air fryer according to claim 3, wherein said counter sink (115) is formed recessed from a lower surface of a bottom wall of said inner pot (11), a second end of said connecting shaft (132) is clearance fitted into said counter sink (115), a first end of said connecting shaft (132) has a cylindrical cross-section, and a first end of said connecting shaft (132) has a cross-sectional diameter D3 which satisfies D3 < D2.

5. An air fryer according to claim 3, wherein the depth of the sink groove (115) is H1, the connecting shaft (132) comprises a connecting section which is provided at the second end of the connecting shaft (132) and has an axial height H2 satisfying 5mm ≦ H2 ≦ 10mm, and H1 > H2.

6. An air fryer according to claim 1, wherein the central support assembly comprises a boss (121), the boss (121) projecting axially upwardly from a bottom wall of the outer pot (12), a top surface of the boss (121) having a spherical surface on which the inner pot (11) is rotatably supported.

7. The air fryer according to claim 6, wherein the bottom surface of the inner pot (11) is concavely provided with a sinking groove (115) matched with the boss (121), the diameter of the sinking groove (115) is D1, the diameter of the spherical surface is D2, and the requirements that D1 is more than or equal to 0.2mm and D2 is less than or equal to 1mm are met.

8. The air fryer according to claim 1, wherein the air fryer further comprises at least 3 rounded protrusions, one of the bottom wall of the inner pot (11) and the bottom wall of the outer pot (12) is concavely provided with an annular groove matching the rounded protrusions, the annular groove extends continuously along the circumference of the bottom wall of the inner pot (11) or the bottom wall of the outer pot (12), the at least 3 rounded protrusions are provided on the other, and the at least 3 rounded protrusions slide or roll within the annular groove, so that the bottom wall of the inner pot (11) and the bottom wall of the outer pot (12) are arranged at intervals.

9. The air fryer according to claim 1, wherein the inner pot (11) comprises an inner pot body (110) and a side wall choke plate (112) provided on a side wall of the inner pot body (110), the side wall of the inner pot body (110) is provided with a plurality of side wall vent holes (111) along a circumferential direction of the inner pot body (110), the side wall choke plate (112) is provided at one side of the side wall vent holes (111) along the circumferential direction of the inner pot body (110), and the side wall choke plate (112) protrudes and extends from an outer surface of the side wall of the inner pot body (110) to extend to an outer side of the side wall vent holes (111) along a radial direction of the inner pot body (110).

10. The air fryer according to claim 9, wherein the side wall vent holes (111) extend obliquely upward in the axial direction of the inner pot (11), and the side wall vent holes (111) extend in such a direction that an angle α between the direction of extension of the side wall vent holes and the axis of the inner pot (11) satisfies 0 ° ≦ α ≦ 45 °, and the oblique direction of the side wall vent holes (111) is the same as the rotational direction of the lower fan (22).

11. The air fryer according to claim 9, wherein the side wall choke flap (112) comprises a first tab (1121) and a second tab (1122), the first tab (1121) protruding from an outer side surface of the inner pot side wall of the inner pot body (110), the second tab (1122) extending from a radially outer edge of the first tab (1121) by being bent such that the second tab (1122) is spaced apart from the inner pot side wall and parallel to a tangent line of the inner pot body (110).

12. The air fryer according to claim 9, wherein the inner pot (11) further comprises a bottom wall choke plate (114), the bottom wall of the inner pot body (110) is provided with a plurality of bottom wall vent holes (113) arranged at intervals in the circumferential direction of the inner pot body (110), the bottom wall choke plate (114) is arranged axially below the bottom wall vent holes (113), and the bottom wall choke plate (114) extends axially below the bottom wall vent holes (113) from the lower surface of the bottom wall of the inner pot body (110).

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