Air fryer

Abstract

The utility model provides an air fryer. The air fryer comprises a body assembly, an air guide assembly, a steam assembly and a control assembly; the body assembly comprises a cooking cavity; the air guide assembly is arranged on the body assembly and comprises an air duct, the first end of the air duct is communicated with the cooking cavity, and the second end of the air duct extends to the external space of the cooking cavity; the steam assembly is arranged on the body assembly and is used for conveying steam into the cooking cavity; the control assembly comprises a shielding component, the shielding component is arranged on the air duct and is used for controlling the at least partial conduction or disconnection between the cooking cavity and the external space. When it is necessary to maintain or improve the humidity in the cooking cavity, the control assembly controls the disconnection between the cooking cavity and the external space, the air guide assembly no longer supplements air into the cooking cavity through the air duct, thereby reducing the exhaust volume of the cooking cavity, reducing the rate at which the steam with high humidity in the cooking cavity is exhausted out of the cooking cavity, thereby reducing the influence of the exhaust of the cooking cavity on the humidity in the cooking cavity, and further improving the taste of the food cooked by the cooking appliance.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliances technology, and more specifically, to an air fryer. Background Technology

[0002] Currently, air fryers are equipped with a fresh air module. When cooking food in an air fryer, this module supplies air into the cooking chamber, increasing the oxygen content. However, because the module supplies air, some of the gas inside the chamber is also released through the exhaust vent. Since food evaporates water vapor during cooking, the humidity inside the chamber is higher than the supplied air. Therefore, the humidity inside the cooking chamber decreases after the gas is expelled. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes an air fryer.

[0005] In view of the above, the first aspect of this utility model provides an air fryer, including a body assembly, an air intake assembly, a steam assembly, and a control assembly; the body assembly includes a cooking cavity; the air intake assembly is disposed in the body assembly, the air intake assembly includes an air duct, a first end of the air duct is connected to the cooking cavity, and a second end of the air duct extends to the external space of the cooking cavity; the steam assembly is disposed in the body assembly and is used to deliver steam into the cooking cavity; the control assembly includes a shielding component, the shielding component is disposed in the air duct, and is used to control the cooking cavity to be at least partially connected or disconnected from the external space.

[0006] In this technical solution, the air fryer includes a steam component, which is located in the main body and is used to supply steam into the cooking chamber. During the operation of the air fryer, the steam supplied to the cooking chamber by the steam component increases the humidity inside the cooking chamber, improves the tenderness of the food cooked in the air fryer, reduces the probability of the cooked food being too dry, and improves the quality of the food cooked in the air fryer.

[0007] The air fryer also includes a control component, which includes a shielding component disposed in the air duct to control the connection or disconnection between the cooking chamber and the external space, at least partially. During operation, when air needs to be supplied to the cooking chamber, the control component controls the cooking chamber to be at least partially connected to the external space through the air duct; when it is necessary to maintain or increase the humidity within the cooking chamber, the control component controls the cooking chamber to be disconnected from the external space, and the air intake component stops supplying air to the cooking chamber through the air duct. This reduces the exhaust volume of the cooking chamber, lowers the rate at which humid steam is expelled from the cooking chamber, and thus reduces the impact of exhaust on the humidity within the cooking chamber, further improving the taste of the food cooked by the air fryer.

[0008] Optionally, in some technical solutions of this utility model, the control component further includes a deformation component; the deformation component is connected to the shielding component; wherein, the deformation component changes shape according to the heating state, when the deformation component is in the first state, the shielding component is in the first position, and the cooking cavity is disconnected from the external space; when the deformation component is in the second state, the shielding component is in the second position, and the cooking cavity is at least partially connected to the external space.

[0009] In some technical solutions of this utility model, optionally, the deformable component includes a first metal sheet and a second metal sheet, the second metal sheet being stacked with the first metal sheet; wherein, the first metal sheet and the second metal sheet have different coefficients of thermal expansion; when the steam assembly is working, at least part of the heat generated by the steam assembly is transferred to the deformable component, and the deformable component is in a first state; when the steam assembly is not working, the deformable component is in a second state.

[0010] In some technical solutions of this utility model, optionally, the steam assembly includes a liquid storage component, a steam component, and a heating component. The liquid storage component is disposed on the body assembly; the steam component is connected to the liquid storage component and to the cooking cavity; the heating component is disposed on one side of the steam component and is used to heat the liquid in the steam component.

[0011] Optionally, in some technical solutions of this utility model, the control component further includes a heat-conducting element, one end of which is connected to the deformation component and the other end extends toward the heating component; wherein, when the steam component is working, at least part of the heat generated by the heating component is transferred to the deformation component through the heat-conducting element to drive the deformation component to switch between the second and first states.

[0012] Optionally, in some technical solutions of this utility model, a shielding component is disposed at the second end of the air duct. The shielding component includes a third metal sheet and a fourth metal sheet, with the fourth metal sheet stacked on top of the third metal sheet. The third metal sheet and the fourth metal sheet have different coefficients of thermal expansion. When the steam assembly is working, at least part of the heat generated by the steam assembly is transferred to the shielding component, which is in a third state, covering the second end of the air duct, and the cooking cavity is disconnected from the external space. When the steam assembly is not working, the shielding component is in a fourth state, with at least part of the shielding component separated from the second end of the air duct, and the cooking cavity is at least partially connected to the external space.

[0013] Optionally, in some technical solutions of this utility model, the control component further includes a driving component, which is disposed on the body component and connected to the shielding component, for driving the shielding component to move relative to the air duct; wherein, the shielding component is located in the first position, and the cooking cavity is disconnected from the external space; the shielding component is located in the second position, and the cooking cavity is at least partially connected to the external space.

[0014] In some technical solutions of this utility model, optionally, the body assembly includes a shell, a first cover and a spacer, the first cover being disposed on the shell; the spacer being disposed inside the shell, the spacer, the shell and the first cover forming a heat dissipation cavity, the spacer and the shell forming a cooking cavity, the heat dissipation cavity and the cooking cavity being located on both sides of the spacer; the second end of the air duct extends into the heat dissipation cavity, and a shielding component is disposed on the second end of the air duct.

[0015] Optionally, in some technical solutions of this utility model, the air duct includes a first air duct and a second air duct; the first end of the first air duct is at least partially connected to the external space; the first end and the second end of the second air duct are both connected to the cooking cavity, and the second end of the first air duct is connected to the second air duct.

[0016] In some technical solutions of this utility model, optionally, the second air duct includes a separation section. In the radial direction of the cooking cavity, the wall surface of the separation section close to the axis of the cooking cavity is the inner wall, and the wall surface away from the axis of the cooking cavity is the outer wall. The radius of curvature of the inner wall is smaller than the radius of curvature of the outer wall.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is one of the structural schematic diagrams of an air fryer according to an embodiment of the present invention;

[0020] Figure 2 This is a second schematic diagram of the structure of an air fryer according to an embodiment of the present invention;

[0021] Figure 3 This is a third schematic diagram of the structure of an air fryer according to an embodiment of the present invention;

[0022] Figure 4 This is a fourth schematic diagram of the structure of an air fryer according to an embodiment of the present invention;

[0023] Figure 5 This is one of the structural schematic diagrams of a control component according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a deformable component according to an embodiment of the present invention;

[0025] Figure 7 This is the fifth schematic diagram of the structure of an air fryer according to an embodiment of the present invention;

[0026] Figure 8 An exploded view of an air fryer according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of an air fryer according to an embodiment of the present invention (Figure 6).

[0028] Figure 10 This is one of the schematic diagrams showing the cooperation between the shielding component and the air duct according to an embodiment of the present invention;

[0029] Figure 11 This is a second schematic diagram showing the cooperation between the shielding component and the air duct according to an embodiment of the present invention;

[0030] Figure 12 This is one of the structural schematic diagrams of a shielding component according to an embodiment of the present invention;

[0031] Figure 13 This is a second schematic diagram of the structure of the shielding component according to an embodiment of the present invention;

[0032] Figure 14 This is a second schematic diagram of the structure of a control component according to an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of an air duct according to an embodiment of the present invention.

[0034] in, Figures 1 to 15 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0035] 100 Body assembly, 110 Cooking cavity, 120 Outer shell, 130 First cover, 140 Spacer, 150 Heat dissipation cavity, 200 Air intake assembly, 210 Air duct, 212 Separation section, 2122 Inner wall, 2124 Outer wall, 214 First air duct, 216 Second air duct, 2162 Inlet, 2164 Outlet, 300 Steam assembly, 310 Liquid storage component, 320 Steam component, 330 Heating component, 340 Liquid inlet connector, 350 Piping, 400 Control assembly, 410 Shielding component, 412 Third metal sheet, 414 Fourth metal sheet, 420 Heat conductor, 430 Deformation component, 432 First metal sheet, 434 Second metal sheet, 440 Drive component, 500 Extension component, 600 First fan blade, 700 Heating tube, 800 Axis. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] The following reference Figures 1 to 15 This invention describes an air fryer according to some embodiments of the present invention.

[0039] In one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, an air fryer is provided, including a body assembly 100, a draft assembly 200, a steam assembly 300, and a control assembly 400; the body assembly 100 includes a cooking cavity 110; the draft assembly 200 is disposed in the body assembly 100, and the draft assembly 200 includes an air duct 210, the first end of the air duct 210 is connected to the cooking cavity 110, and the second end of the air duct 210 extends to the external space of the cooking cavity 110; the steam assembly 300 is disposed in the body assembly 100 and is used to deliver steam into the cooking cavity 110; the control assembly 400 includes a shielding member 410, the shielding member 410 is disposed in the air duct 210, and is used to control the cooking cavity 110 to be at least partially connected or disconnected from the external space.

[0040] In this embodiment, the air fryer includes a body assembly 100, which serves as the frame structure of the air fryer and is used to position, protect, and support other working structures on the air fryer. A cooking cavity 110 is formed within the body assembly 100, where food is placed and processed into finished food.

[0041] The air fryer also includes a draft assembly 200, which is disposed within the body assembly 100. The draft assembly 200 includes an air duct 210, which connects the cooking chamber 110 and the space outside the body assembly 100.

[0042] During the operation of the air fryer, the gas flowing within the cooking chamber 110 forms an internal circulating airflow. Due to the characteristics of fluid media, the pressure is lower in areas of high flow velocity during flow. Because of the internal circulating airflow, the pressure within the cooking chamber 110 is lower than the pressure of the external environment surrounding the unit 100. Under this pressure difference, external gas is forced into the air duct 210, forming an intake airflow that flows from the second end to the first end of the air duct 210. This intake airflow merges with the internal circulating airflow after entering the cooking chamber 110, allowing the cooking chamber 110 to continuously draw in external air during operation. This external air helps regulate cooking parameters such as humidity and oxygen content within the cooking chamber 110 to meet the cooking requirements of specific foods.

[0043] The air fryer also includes a steam unit 300, which is located in the body assembly 100 and is used to supply steam into the cooking chamber 110. During the operation of the air fryer, the steam supplied to the cooking chamber 110 by the steam unit 300 increases the humidity inside the cooking chamber 110, improves the tenderness of the food cooked in the air fryer, reduces the probability of the cooked food being too dry, and improves the quality of the food cooked in the air fryer.

[0044] The air fryer also includes a control component 400, which includes a shielding component 410 disposed in the air duct 210 for controlling whether the cooking chamber 110 is at least partially connected to or disconnected from the external space. During operation, when air needs to be supplied to the cooking chamber 110, the control component 400 controls the cooking chamber 110 to be at least partially connected to the external space through the air duct 210; when humidity needs to be maintained or increased, the control component 400 controls the cooking chamber 110 to be disconnected from the external space, and the air intake component 200 stops supplying air to the cooking chamber 110 through the air duct 210, thereby reducing the exhaust volume of the cooking chamber 110 and decreasing the rate at which humid steam is expelled from the cooking chamber 110, thus reducing the impact of exhaust on the humidity of the cooking chamber 110 and further improving the taste of the food cooked by the air fryer.

[0045] Optionally, the external space can be the heat dissipation cavity 150 of the air fryer, or it can be the space outside the air fryer.

[0046] Specifically, the humidity inside the cooking cavity 110 can be regulated by the combined operation of the draft fan assembly 200 and the steam assembly 300. During cooking, when it is necessary to reduce the humidity inside the cooking cavity 110, the draft fan assembly 200 can be turned on and the steam assembly 300 can be turned off. Fresh air is drawn in and the humid internal air is expelled, thereby reducing the humidity inside the cooking cavity 110. When it is necessary to increase the humidity inside the cooking cavity 110, the draft fan assembly 200 can be turned off and the steam assembly 300 can be turned on. The steam generated by the steam assembly 300 increases the humidity inside the cooking cavity 110.

[0047] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0048] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the control assembly 400 also includes a deformation component 430; the deformation component 430 is connected to the shielding component 410; wherein, the deformation component 430 changes its shape according to the heating state, such as Figure 1 As shown, when the deformable component 430 is in the first state, the shielding component 410 is in the first position, and the cooking cavity 110 is disconnected from the external space; as Figure 2 As shown, when the deformable component 430 is in the second form, the shielding component 410 is in the second position, and the cooking cavity 110 is at least partially connected to the external space.

[0049] In this embodiment, when the deformable component 430 is in the first state, the shielding component 410 is in the first position, and the cooking cavity 110 is disconnected from the external space. When the deformable component 430 is in the second state, the shielding component 410 is in the second position, and the cooking cavity 110 is at least partially connected to the external space. The position of the shielding component 410 is controlled by the deformable component 430, thereby controlling the air duct 210. Controlling the position of the shielding component 410 using the deformable component 430 improves the accuracy of position control and also provides a longer service life, reducing the probability of control component 400 failure.

[0050] Optionally, when the shielding component 410 is in the first position, the air duct 210 is blocked, and the cooking cavity 110 cannot be connected to the external space through the air duct 210, thereby disconnecting the cooking cavity 110 from the external space.

[0051] When the shielding component 410 is in the second position, the air duct 210 is open, and the cooking cavity 110 is connected to the external space through the air duct 210.

[0052] Optionally, the shielding component 410 is a baffle. When the shielding component 410 is in the first position, it covers one end of the air duct 210 to block it, thus obstructing the air duct 210. When the shielding component 410 is in the second position, it moves away from the air duct 210, no longer blocking the air duct 210, thereby allowing the cooking cavity 110 to connect with the external space through the air duct 210.

[0053] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0054] like Figure 5 and Figure 6 As shown, the deformable component 430 includes a first metal sheet 432 and a second metal sheet 434, which are stacked on top of the first metal sheet 432. The first metal sheet 432 and the second metal sheet 434 have different coefficients of thermal expansion. When the steam assembly 300 is working, at least part of the heat generated by the steam assembly 300 is transferred to the deformable component 430, and the deformable component 430 is in a first state. When the steam assembly 300 is not working, the deformable component 430 is in a second state.

[0055] In this embodiment, the deformation component 430 includes a first metal sheet 432 and a second metal sheet 434. The first metal sheet 432 and the second metal sheet 434 have different coefficients of thermal expansion. When the temperature of the deformation component 430 changes, the thermal deformation of the first metal sheet 432 and the second metal sheet 434 is different, which causes the deformation component 430 to deform, thereby driving the blocking component 410 and improving the stability of the blocking component 410 during the movement.

[0056] During the operation of the air fryer, air needs to be supplied to the cooking chamber 110, and when the steam component 300 is not working, the deformation component 430 is in the second state, and the cooking chamber 110 is at least partially connected to the external space through the air duct 210.

[0057] When it is necessary to increase the humidity inside the cooking cavity 110, the steam component 300 starts to work and delivers steam into the cooking cavity. At least part of the heat generated by the steam component 300 is transferred to the deformation component 430, which is in the first state. The cooking cavity 110 is disconnected from the external space, and the air intake component 200 no longer replenishes air into the cooking cavity 110 through the air duct 210. This reduces the exhaust volume of the cooking cavity 110, decreases the probability that the steam replenished by the steam component 300 will be discharged from the cooking cavity 110, and increases the rate at which the steam module replenishes steam into the cooking cavity 110, thereby further improving the taste of the food cooked by the cooking appliance.

[0058] Specifically, when the steam assembly 300 is working, the heat transferred from the steam assembly 300 to the deformation member 430 can drive the deformation member 430 to switch from the second state to the first state. When the steam assembly 300 is not working, the temperature around the deformation member 430 can keep the deformation member 430 in the second state, thereby ensuring that the air intake assembly 200 can deliver air into the cooking cavity 110.

[0059] Specifically, the control assembly 400 also includes an extension 500, through which the shielding component 410 is connected to the deformation component 430.

[0060] Optionally, the deformable component 430 may also be a shape memory alloy component.

[0061] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0062] like Figure 7 , Figure 8 and Figure 9As shown, the steam assembly 300 includes a liquid storage component 310, a steam component 320, and a heating component 330. The liquid storage component 310 is disposed on the body assembly 100. The steam component 320 communicates with the liquid storage component 310 and with the cooking cavity 110. The heating component 330 is disposed on one side of the steam component 320 and is used to heat the liquid in the steam component 320.

[0063] In this embodiment, the steam assembly 300 includes a liquid storage component 310, a steam component 320, and a heating component 330. The liquid storage component 310 is disposed in the body assembly 100 and is used to store liquid. It can supply liquid to the steam component 320 according to the working needs of the cooking cavity 110, thereby enabling the steam component 320 and the heating component 330 to cooperate in supplying steam into the cooking cavity 110. The steam component 320 is connected to the liquid storage component 310 and also to the cooking cavity 110. After the liquid storage component 310 supplies liquid to the steam component 320, the heating component 330 heats the liquid in the steam component 320, causing the liquid to vaporize within the steam component 320, thereby supplying steam to the cooking cavity 110 to increase the humidity of the cooking cavity 110.

[0064] Optionally, the steam assembly 300 also includes an inlet connector 340 and a pipe 350. One end of the pipe 350 is connected to the liquid storage component 310 through the inlet connector 340, and the other end of the pipe 350 is connected to the steam assembly 320. The liquid in the liquid storage component 310 is transported to the steam assembly 320 through the inlet connector 340 and the pipe 350.

[0065] Optionally, the liquid storage component 310 is a water tank.

[0066] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0067] like Figure 1 and Figure 2 As shown, the control assembly 400 also includes a heat-conducting element 420, one end of which is connected to the deformation component 430 and the other end extends toward the heating component 330; wherein, when the steam assembly 300 is working, at least part of the heat generated by the heating component 330 is transferred to the deformation component 430 through the heat-conducting element 420 to drive the deformation component 430 to switch between the second mode and the first mode.

[0068] In this embodiment, when the heating component 330 is working, heat is transferred to the deformation component 430 through the heat-conducting component 420, causing the deformation component 430 to heat up. This, in turn, causes the deformation component 430 to drive the blocking component 410 to move, disconnecting the air duct 210. The air intake component 200 then stops supplying air into the cooking cavity 110, thereby reducing the exhaust volume of the cooking cavity 110 and decreasing the probability that the steam replenished by the steam component 300 will be discharged from the cooking cavity 110. This increases the rate at which the steam module replenishes steam into the cooking cavity 110, further improving the taste of the food cooked by the cooking appliance. By setting the heat-conducting component 420, after the steam component 300 starts working, the heat generated by the heating component 330 can control the deformation component 430, thereby simplifying the control method of the deformation component 430, reducing the control difficulty of the deformation component 430, and improving the consistency of the cooperation between the control component 400 and the steam component 300.

[0069] Optionally, the second metal sheet 434 and the first metal sheet 432 are stacked to form a bimetallic sheet. One end of the bimetallic sheet is fixed to the heat-conducting element 420, and the other end is connected to the shielding element 410 via the extension element 500. The bimetallic sheet is composed of at least two metals with different coefficients of thermal expansion. During heating, due to the difference in the coefficients of thermal expansion, it will bend in one direction. The bimetallic element and the heat-conducting element 420 should be in full contact, and the heat-conducting element 420 should have good thermal conductivity, at least enough to allow heat to be transferred to the bimetallic sheet through the heat-conducting element 420 when the heating element 330 is working, causing the bimetallic sheet to bend sufficiently. The heat-conducting element 420 is in contact with the heating element 330 to ensure that heat can be conducted to the bimetallic sheet through the heat-conducting element 420.

[0070] When the temperature of the bimetallic strip rises, it will bend due to the different thermal expansion coefficients of the different metals. This will cause the baffle plate connected to the bimetallic strip to bend, so that the baffle plate can block the air inlet of the outer channel and greatly reduce the fresh air intake capacity of the outer channel.

[0071] The heat-conducting component 420 does not need to directly contact the heating component 330. During all operating modes of the air fryer, the highest temperature achievable near the bimetallic strip is set to T0. When the steam assembly 300 is operating normally, the temperature achievable by the heat-conducting component 420 is set to T1, and the bimetallic strip temperature is T2. For the bimetallic strip to operate normally, the condition T2 > T0 must be met. Due to heat dissipation during heat conduction, the temperatures of the heat-conducting component 420 and the bimetallic strip should be related as follows: T1 ≥ T2. The combined temperature relationship should be: T1 ≥ T2 > T0. This relationship ensures that when the steam assembly 300 is off, the bimetallic strip will not bend and disconnect the air intake module; while when the steam assembly 300 is on, the bimetallic strip can bend sufficiently to allow the shielding component 410 to close the air intake module.

[0072] Optionally, the heat-conducting component 420 is disposed on the body assembly 100, one end of the deformation component 430 is connected to the heat-conducting component 420, and the other end of the deformation component 430 is connected to the shielding component 410, thereby supporting the deformation component 430 and the shielding component 410 through the heat-conducting component 420, and improving the stability of the deformation component 430 and the shielding component 410 during operation.

[0073] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0074] like Figure 10 , Figure 11 and Figure 12 As shown, the shielding component 410 is disposed at the second end of the air duct 210; wherein, as Figure 10 As shown, when the shielding component 410 is in the third configuration, the shielding component 410 covers the second end of the air duct 210, and the cooking cavity 110 is disconnected from the external space; as Figure 11 As shown, when the shielding member 410 is in the fourth state, at least part of the shielding member 410 is separated from the second end of the air duct 210, and the cooking cavity 110 is at least partially connected to the external space.

[0075] In this embodiment, the shielding component 410 is disposed at the second end of the air duct 210. When the shielding component 410 is in the third form, it covers the second end of the air duct 210, and the cooking cavity 110 is disconnected from the external space. When the shielding component 410 is in the fourth form, at least part of it is separated from the second end of the air duct 210, and the cooking cavity 110 is at least partially connected to the external space, thereby enabling control of the air duct 210 through the shielding component 410. By controlling the shape of the shielding component 410 itself to control the air duct 210, the structure of the control component 400 is simplified, and the space occupied by the control component 400 in the air duct 210 is reduced.

[0076] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0077] like Figure 13As shown, the shielding component 410 includes a third metal sheet 412 and a fourth metal sheet 414, which are stacked on top of the third metal sheet 412. The third metal sheet 412 and the fourth metal sheet 414 have different coefficients of thermal expansion. When the steam assembly 300 is working, at least part of the heat generated by the steam assembly 300 is transferred to the shielding component 410, and the shielding component 410 is in a third state, covering the second end of the air duct 210, and the cooking cavity 110 is disconnected from the external space. When the steam assembly 300 is not working, the shielding component 410 is in a fourth state, at least part of the shielding component 410 is separated from the second end of the air duct 210, and the cooking cavity 110 is at least partially connected to the external space.

[0078] In this embodiment, the shielding component 410 includes a third metal sheet 412 and a fourth metal sheet 414. The third metal sheet 412 and the fourth metal sheet 414 have different coefficients of thermal expansion. When the temperature of the shielding component 410 changes, the thermal deformation of the third metal sheet 412 and the fourth metal sheet 414 is different, which causes the shielding component 410 to deform, thereby driving the shielding component 410 and improving the stability of the shielding component 410 during the movement.

[0079] During the operation of the air fryer, air needs to be supplied to the cooking cavity 110, and when the steam component 300 is not working, the shielding component 410 is in the fourth state, and the cooking cavity 110 is at least partially connected to the external space through the air duct 210.

[0080] When it is necessary to increase the humidity inside the cooking cavity 110, the steam component 300 starts to work and delivers steam into the cooking cavity. At least part of the heat generated by the steam component 300 is transferred to the shielding component 410, which is in a third state. The cooking cavity 110 is disconnected from the external space, and the air intake component 200 no longer supplies air into the cooking cavity 110 through the air duct 210. This reduces the exhaust volume of the cooking cavity 110, lowers the probability that the steam supplied by the steam component 300 will be discharged from the cooking cavity 110, and increases the rate at which the steam module supplies steam into the cooking cavity 110, further improving the taste of the food cooked by the cooking appliance.

[0081] Specifically, when the steam assembly 300 is working, the heat transferred from the steam assembly 300 to the shielding member 410 can drive the shielding member 410 to switch from the fourth state to the third state. When the steam assembly 300 is not working, the temperature around the shielding member 410 can keep the shielding member 410 in the fourth state, thereby ensuring that the air intake assembly 200 can deliver air into the cooking cavity 110.

[0082] Optionally, the control component 400 also includes a heat-conducting element connected to the shielding component 410 and extending toward the heating component 330, so that the heat generated by the heating component 330 can be transferred to the shielding component 410 through the heat-conducting element.

[0083] Optionally, the third metal sheet 412 and the fourth metal sheet 414 are stacked as a baffle. When the blocking component 410 is in the third state, the blocking component 410 is in a flat state and contacts the end of the air duct 210, thereby blocking the air duct 210.

[0084] When the shielding member 410 is in the fourth state, the middle part of the shielding member 410 is recessed towards the end of the air duct 210, and / or the edge of the shielding member 410 is raised away from the end of the air duct 210. The edge of the shielding member 410 is separated from the end of the air duct 210, thereby making the air duct 210 open and the cooking cavity 110 connected to the external space through the air duct 210.

[0085] Alternatively, the shielding component 410 may also be a shape memory alloy component.

[0086] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0087] like Figure 14 As shown, the control assembly 400 also includes a drive component 440, which is disposed on the body assembly 100 and connected to the shielding component 410, for driving the shielding component 410 to move relative to the air duct 210; wherein, the shielding component 410 is in a first position, and the cooking cavity 110 is disconnected from the external space; the shielding component 410 is in a second position, and the cooking cavity 110 is at least partially connected to the external space.

[0088] In this embodiment, the control component 400 further includes a drive component 440, which is disposed on the body component 100 and connected to the shielding component 410. The drive component 440 is used to drive the shielding component 410 to move relative to the air duct 210, so that the air fryer can selectively control the position of the shielding component 410 when the steam component 300 is working, making the control of the shielding component 410 by the air fryer more flexible and the control of the position of the shielding component 410 more accurate.

[0089] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0090] like Figure 1 , Figure 2 and Figure 3As shown, the body assembly 100 includes a housing 120, a first cover 130, and a spacer 140. The first cover 130 covers the housing 120. The spacer 140 is disposed inside the housing 120. The spacer 140, the housing 120, and the first cover 130 enclose a heat dissipation cavity 150. The spacer 140 and the housing 120 enclose a cooking cavity 110. The heat dissipation cavity 150 and the cooking cavity 110 are located on both sides of the spacer 140. The second end of the air duct 210 extends into the heat dissipation cavity 150, and the shielding member 410 covers the second end of the air duct 210.

[0091] In this embodiment, the body assembly 100 includes a housing 120 and a first cover 130. The first cover 130 covers the housing 120, providing protection for the cooking appliance and preventing external contaminants from entering. It also improves the assembly efficiency of the cooking appliance. The body assembly 100 further includes a spacer 140 disposed within the housing 120. The spacer 140, housing 120, and first cover 130 enclose a heat dissipation cavity 150, forming a heat dissipation space. The spacer 140 and housing 120 enclose a cooking cavity 110. The heat dissipation cavity 150 and cooking cavity 110 are located on opposite sides of the spacer 140, ensuring temperature stability and cooking efficiency in the cooking cavity 110. Simultaneously, the heat dissipation cavity 150 also provides a cooling channel for the electronic components inside the cooking appliance, increasing the intake of fresh air while simultaneously dissipating heat from the internal electronic components.

[0092] This application achieves the isolation and integration of functional spaces by setting a spacer 140 inside the outer shell 120, which together with the outer shell 120 and the first cover 130 to form an independent cooking cavity 110 and a heat dissipation cavity 150, thereby reducing the volume of the cooking appliance and realizing a lightweight and integrated design.

[0093] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0094] like Figure 3 and Figure 15 As shown, the air duct 210 includes a first air duct 214 and a second air duct 216; the first end of the first air duct 214 is at least partially connected to the external space; the first end and the second end of the second air duct 216 are both connected to the cooking cavity 110, and the second end of the first air duct 214 is connected to the second air duct 216.

[0095] exist Figure 3 and Figure 15 In the diagram, arrow A indicates the direction of the incoming airflow, and arrow B indicates the direction of the internal recirculation airflow.

[0096] In this embodiment, the air duct 210 includes a first air duct 214 and a second air duct 216. The first end of the first air duct 214 is connected to the space outside the main body, and the second end of the first air duct 214 is connected to the second air duct 216. The airflow introduced from the outside can enter the second air duct 216 through the first air duct 214 and enter the cooking cavity 110 to regulate the temperature, humidity and oxygen content in the cooking cavity 110.

[0097] Optionally, the first end of the second air duct 216 is connected to the cooking cavity 110, and the second end of the second air duct 216 is also connected to the cooking cavity 110. The second end of the first air duct 214 is connected to the middle section of the second air duct 216, and the first end of the first air duct 214 extends toward the outer surface of the body and eventually connects with the space outside the body. That is, the second air duct 216 connects two different areas inside the cooking cavity 110, and the first air duct 214 connects the cooking cavity 110 and the outside of the air fryer.

[0098] During operation, the gas flowing within the cooking cavity 110 enters the second air duct 216 from one end of the first end and the other end, ultimately exiting from the other end, thus forming an internal circulating airflow within the second air duct 216. Due to the characteristics of fluid media, the pressure is lower in areas of high flow velocity during flow. Because of the internal circulating airflow, the pressure within the second air duct is lower than the pressure of the external environment. Under this pressure difference, external gas is forced into the first air duct 214, forming an externally introduced airflow within it. This externally introduced airflow flows from the second end to the first end of the first air duct 214. After entering the second air duct 216, the externally introduced airflow merges with the internal circulating airflow and ultimately flows into the cooking cavity 110, allowing the cooking cavity 110 to continuously introduce external air during operation. This external airflow helps regulate cooking parameters such as humidity and oxygen content within the cooking cavity 110 to meet the cooking requirements of specific foods.

[0099] Compared with the scheme where the second end of the first air duct 214 is directly connected to the cooking cavity 110, the internal circulation airflow can be accelerated inside the second air duct 216, thereby increasing the pressure difference between the second air duct 216 and the external environment, so as to increase the introduction rate of external airflow, and thus improve the regulation effect of temperature, humidity and oxygen content in the cooking cavity 110.

[0100] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0101] like Figure 3 and Figure 15 As shown, the second air duct 216 includes a separation section 212, which is located in the radial direction of the cooking cavity 110. Figure 3In the direction indicated by the middle arrow C, the wall surface of the separation segment 212 near the axis 800 of the cooking cavity 110 is the inner wall 2122, and the wall surface away from the axis 800 of the cooking cavity 110 is the outer wall 2124. The radius of curvature of the inner wall 2122 is smaller than the radius of curvature of the outer wall 2124.

[0102] In this embodiment, a separation section 212 is provided in the second air duct 216. Specifically, a bend or fold can be provided in the second air duct 216 to form the separation section 212. In the radial direction of the cooking cavity 110, the wall surface of the separation section 212 near the axis 800 of the cooking cavity 110 is the inner wall 2122, and the wall surface away from the axis 800 of the cooking cavity 110 is the outer wall 2124. The radius of curvature of the inner wall 2122 is smaller than the radius of curvature of the outer wall 2124.

[0103] By setting a separation section 212 with a smaller inner radius of curvature and a larger outer radius of curvature, the separation section 212 has a large curvature angle. When gas flows through the separation section 212 with a large curvature angle, due to the insufficient viscosity of the gas medium, flow separation occurs in the separation section 212. After flow separation, a low-pressure area with a relatively low gas velocity is generated on the inner side of the bend of the separation section 212. This low-pressure area increases the pressure difference between the air duct 210 and the external space of the main body, thereby increasing the velocity of the introduced airflow and accelerating the introduction efficiency of the introduced airflow. This ensures that the introduced airflow can adjust the parameter values ​​of the cooking cavity 110 to the cooking requirement range, thus solving the technical problems of low air introduction efficiency and inability to meet cooking requirements in related technologies. This achieves the technical effect of optimizing the air fryer structure, improving the practicality of the air fryer, and improving the quality of the cooked food.

[0104] Based on this, the separation section 212 is located in the middle section of the second air duct 216, and the second end of the first air duct 214 is connected to the separation section 212. By setting the separation section 212 on the second air duct 216, the internal circulating airflow can generate flow separation within the second air duct 216, thereby further reducing the pressure value within the second air duct 216. This increases the pressure difference between the second air duct 216 and the external space of the main body, allowing external air to be rapidly introduced into the cooking cavity 110 under this larger pressure difference. Furthermore, compared to the scheme of setting the separation section 212 within the first air duct 214, the airflow velocity within the second air duct 216 is faster, the pressure is lower, and it is more conducive to forming flow separation, thereby achieving the technical effect of increasing the rate of external air introduction and improving the quality of the cooked food.

[0105] Optionally, the second air duct 216 extends along a curve and is curved, so that part of the second air duct 216 forms a separation section 212, or the entire second air duct 216 forms a separation section 212. During the flow of the internal circulating airflow in the second air duct 216, it bends along the extension direction of the second air duct 216 and generates flow separation, thereby forming a low-pressure region with relatively low flow velocity and relatively low pressure on the inner side of the second air duct 216. Under the action of the low-pressure region, the introduced airflow accelerates into the second air duct 216 to increase the air introduction rate.

[0106] Furthermore, compared to the embodiment that extends along a broken line and forms a separation section 212 at the bend, the curved extension of the second air duct 216 has less resistance to the internal circulation airflow, which is beneficial to increasing the flow velocity of the internal circulation airflow in the second air duct 216 and can enhance the flow separation phenomenon in the second air duct 216, thereby improving the air introduction efficiency.

[0107] Optionally, the air fryer also includes a first blade 600 disposed within the cooking chamber 110, and a second air duct 216 arranged circumferentially along the first blade 600.

[0108] The air fryer also includes a heating element 700, which is arranged opposite to the first fan blade 600 and is located inside the cooking cavity 110.

[0109] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0110] like Figure 3 As shown, the second air duct 216 includes an inlet 2162 and an outlet 2164. In the flow direction from the inlet 2162 to the outlet 2164, the curvature of the second air duct 216 first increases and then decreases. On the second air duct 216, the area connected to the first air duct 214 is close to the outlet 2164 of the second air duct 216.

[0111] In this embodiment, the curvature of the middle section of the second air duct 216 is larger, while the curvature of both ends is smaller. Specifically, in the flow direction of the second air duct 216, the curvature of the second air duct 216 gradually increases first and then gradually decreases.

[0112] By increasing the radius of curvature of the connecting area, the flow separation phenomenon of the internal circulation airflow in the connecting area can be enhanced. This reduces the pressure in the connecting area, thereby increasing the pressure difference between the second air duct 216 and the external space. This allows external air to quickly enter the second air duct 216 under the pressure difference, thereby improving the efficiency of external air introduction and meeting the technical effect of cooking.

[0113] Based on this, the area on the second air duct 216 that connects to the first air duct 214 is a connected area. Compared to the inlet 2162 of the second air duct 216, the connected area is closer to the outlet 2164 of the second air duct 216. During the passage of the internal circulating airflow through the middle section of the second air duct 216, flow separation occurs. Under the influence of this flow separation, the internal air pressure gradually decreases from the middle section of the second air duct 216 to its outlet 2164. By connecting the first air duct 214 with the area near the outlet 2164 of the second air duct 216, the pressure difference between the inside and outside can be effectively increased, allowing external air to quickly enter the second air duct 216 under this pressure difference. This improves the efficiency of external air intake and meets the technical requirements for cooking.

[0114] This embodiment provides an air fryer, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0115] like Figure 3 and Figure 15 As shown, the second air duct 216 includes an inlet 2162 and an outlet 2164. In the flow direction from the inlet 2162 to the outlet 2164, the flow area of ​​the second air duct 216 first decreases and then increases. On the second air duct 216, the area connected to the first air duct 214 is close to the outlet 2164 of the second air duct 216.

[0116] In this embodiment, the flow area of ​​the second air duct 216 first decreases and then increases in the flow direction, and the area of ​​the first air duct 214 and the area of ​​the second air duct 216 near the outlet 2164 are connected.

[0117] S1 is the flow area of ​​the inlet 2162 of the second air duct 216, S2 is the flow area of ​​the connected area of ​​the second air duct 216, and S3 is the flow area of ​​the outlet 2164 of the second air duct 216, where S1 > S2 and S3 > S2.

[0118] Based on this, the flow area in the middle section of the second air duct 216 is smaller, while the flow area at both ends is larger. Specifically, in the flow direction of the second air duct 216, the flow area of ​​the second air duct 216 first gradually decreases and then gradually increases.

[0119] Based on Bernoulli's principle and the continuity equation, it is known that within the streamlines of the same medium, the fluid velocity is higher and the pressure is lower in regions with smaller flow areas. Therefore, by reducing the flow area of ​​the connected regions in the second air duct 216, the flow velocity of the internal circulating air in the region can be increased, and the pressure in the connected regions can be reduced by increasing the flow velocity, thereby increasing the pressure difference between the inside and outside.

[0120] On the other hand, the area on the second air duct 216 that connects to the first air duct 214 is a connecting area. Compared to the inlet 2162 of the second air duct 216, the connecting area is closer to the outlet 2164 of the second air duct 216. By reducing the flow area, the internal circulating airflow can be accelerated before entering the connecting area. This not only increases the flow velocity in the connecting area but also enhances the flow separation phenomenon of the internal circulating airflow in the connecting section, thereby further reducing the pressure in the connecting area. This allows external air to quickly enter the second air duct 216 under the pressure difference, thereby improving the efficiency of external air introduction and meeting the technical effect of cooking.

[0121] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0122] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0123] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air fryer characterized in that, include: A body assembly, wherein the body assembly includes a cooking cavity; An air intake assembly is provided on the body assembly. The air intake assembly includes an air duct, a first end of which communicates with the cooking cavity, and a second end of which extends to the external space of the cooking cavity. A steam assembly, disposed on the body assembly, is used to deliver steam into the cooking cavity; A control component, the control component including a shielding component disposed in the air duct, for controlling the cooking cavity to be at least partially connected to or disconnected from the external space.

2. The air fryer according to claim 1, characterized in that The control component also includes: A deformable component, which is connected to the shielding component; The deformable component changes shape according to the heating state. When the deformable component is in the first state, the shielding component is in the first position, and the cooking cavity is disconnected from the external space. When the deformable component is in the second form, the shielding component is in the second position, and the cooking cavity is at least partially connected to the external space.

3. The air fryer according to claim 2, characterized in that The deformable component includes a first metal sheet; The second metal sheet is stacked on top of the first metal sheet; The first metal sheet and the second metal sheet have different coefficients of thermal expansion. When the steam assembly is in operation, at least a portion of the heat generated by the steam assembly is transferred to the deformable component, which is in the first configuration. When the steam assembly is not in operation, the deformable component is in the second configuration.

4. The air fryer according to claim 2, characterized in that, The steam assembly includes: A liquid storage component, wherein the liquid storage component is disposed in the body assembly; A steam component, which is connected to the liquid storage component and the cooking cavity; A heating element is disposed on one side of the steam element and is used to heat the liquid inside the steam element.

5. The air fryer according to claim 4, characterized in that The control component also includes: A heat-conducting component, one end of which is connected to the deformation component, and the other end of which extends toward the heating component; When the steam assembly is in operation, at least a portion of the heat generated by the heating component is transferred to the deformation component through the heat-conducting element, thereby driving the deformation component to switch between the second mode and the first mode.

6. The air fryer according to claim 1, characterized in that, The shielding component is disposed at the second end of the air duct, and the shielding component includes: Third metal sheet; A fourth metal sheet, which is stacked with the third metal sheet; The third metal sheet and the fourth metal sheet have different coefficients of thermal expansion. When the steam assembly is working, at least a portion of the heat generated by the steam assembly is transferred to the shielding member, which is in a third configuration and covers the second end of the air duct, and the cooking cavity is disconnected from the external space. When the steam assembly is not in operation, the shielding component is in a fourth configuration, at least partially separated from the second end of the air duct, and the cooking cavity is at least partially connected to the external space.

7. The air fryer of claim 1, wherein, The control component also includes: A drive component is disposed on the body assembly and connected to the shielding component, and is used to drive the shielding component to move relative to the air duct; Wherein, the shielding component is located in the first position, and the cooking cavity is disconnected from the external space; The shielding component is located in the second position, and the cooking cavity is at least partially connected to the external space.

8. The air fryer according to claim 1, characterized in that, The fuselage components include: shell; A first cover is provided on the outer shell; A spacer is disposed inside the outer shell. The spacer, the outer shell, and the first cover form a heat dissipation cavity. The spacer and the outer shell form a cooking cavity. The heat dissipation cavity and the cooking cavity are located on opposite sides of the spacer. The second end of the air duct extends into the heat dissipation cavity, and the shielding component covers the second end of the air duct.

9. The air fryer according to any one of claims 1 to 8, characterized in that, The air duct includes: A first air duct, wherein a first end of the first air duct is at least partially connected to the external space; The second air duct has a first end and a second end that are both connected to the cooking cavity, and the second end of the first air duct is connected to the second air duct.

10. The air fryer according to claim 9, characterized in that, The second air duct includes a separation section. In the radial direction of the cooking cavity, the wall surface of the separation section near the axis of the cooking cavity is the inner wall, and the wall surface away from the axis of the cooking cavity is the outer wall. The radius of curvature of the inner wall is smaller than that of the outer wall.

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