Cooking utensil

Abstract

The embodiment of the utility model provides a cooking utensil which comprises a shell, a heating device, a fan and a variable flow guide device, a pot body is arranged in the shell and provided with a cooking cavity, the heating device is arranged in the shell, the fan is arranged in the shell and used for driving airflow to flow, and the variable flow guide device is arranged in the shell and used for changing the flowing direction of the airflow. According to the cooking utensil provided by the embodiment of the invention, by arranging the variable flow guide device, the flowing direction of the air flow in the cooking utensil is changed, in the heating process, according to different heating requirements of the food materials, the flowing direction of the air flow can be changed, the food materials are heated from different angles, and then the food materials are heated more uniformly.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically to a cooking appliance. Background Technology

[0002] As consumers increasingly prioritize healthy eating, cooking appliances like air fryers have become more common. Air fryers use high-speed circulating hot air to evaporate moisture from the surface of food, achieving the same cooking effect as deep-frying without oil. This reduces oil intake and makes food healthier. Furthermore, air fryers require minimal oil and water, are easy to operate, and cook quickly.

[0003] Current cooking appliances such as air fryers have a fixed airflow path. When food is placed in the cooking chamber, the contact surface between the airflow along the fixed path and the food is relatively fixed. This can easily cause uneven heating of the food, resulting in uneven coloring on the surface of the food after processing. Utility Model Content

[0004] This application provides a cooking appliance to at least partially improve the above-mentioned technical problems.

[0005] This application provides a cooking appliance, including a shell, a heating device, a fan, and a variable airflow guiding device. A pot body is disposed inside the shell, and the pot body has a cooking cavity. The heating device is disposed in the shell, the fan is disposed inside the shell and is used to drive airflow, and the variable airflow guiding device is disposed in the shell and is used to change the direction of airflow.

[0006] In one embodiment, the variable airflow device has an airflow channel with an air outlet facing the cooking cavity.

[0007] In one implementation, the diameter of the air outlet can be changed.

[0008] In one embodiment, the variable flow guiding device includes a top plate and a guide plate, the guide plate being connected to the edge of the top plate, the guide plate and the top plate forming an installation space, a fan and a heating element being located within the installation space, and an air outlet being formed at the end of the guide plate away from the top plate.

[0009] In one embodiment, the guide plate is rotatably connected to the top plate.

[0010] In one embodiment, the guide plate is slidably disposed on the top plate in a horizontal direction.

[0011] In one embodiment, the variable flow guiding device includes a plurality of guide plates, each with an adjustable tilt angle.

[0012] In one embodiment, the pot body includes a side wall and a bottom wall, the side wall surrounding the edge of the bottom wall, the side wall and the bottom wall forming a cooking cavity, the bottom wall including a first region and a second region surrounding the first region, the air outlet of the variable airflow guiding device having a first state and a second state, when the air outlet is in the first state, the air outlet guides the airflow to the first region, and when the air outlet is in the second state, the air outlet guides the airflow to the second region.

[0013] In one implementation, when the air outlet is in the first state, the diameter of the air outlet is a, and when the air outlet is in the second state, the diameter of the air outlet is b, where b is greater than a.

[0014] In one embodiment, the cooking appliance further includes a control unit for controlling the variable flow guide device to change the tilt angle of the guide plate in response to a control command. The control unit is configured to change the tilt angle and / or position of the guide plate intermittently or continuously.

[0015] The cooking appliance proposed in this application embodiment, by setting a variable airflow guide device, changes the airflow direction within the cooking appliance. During the heating process, the airflow direction can be changed according to the different heating requirements of the ingredients, heating the ingredients from different angles, thereby making the heating of the ingredients more uniform. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a cooking appliance proposed in this application when the variable flow guiding device is in the first state.

[0018] Figure 2 This is a structural block diagram of a cooking appliance proposed in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of a cooking appliance proposed in this application when the variable flow guiding device is in the second state.

[0020] Figure 4 This is a schematic diagram of the adjustment path of a variable flow guiding device in a cooking appliance according to an embodiment of this application.

[0021] Figure 5 This is a schematic diagram of the structure of a variable flow guiding device in another cooking appliance according to an embodiment of this application.

[0022] Figure 6This is a schematic diagram of the structure of a variable flow guiding device in another cooking appliance according to an embodiment of this application. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0024] As consumers increasingly prioritize healthy eating, cooking appliances like air fryers have become more common. Air fryers use high-speed circulating hot air to evaporate moisture from the surface of food, achieving the same cooking effect as deep-frying without oil. This reduces oil intake and makes food healthier. Furthermore, air fryers require minimal oil and water, are easy to operate, and cook quickly.

[0025] Current cooking appliances such as air fryers have a fixed airflow path. When food is placed in the cooking chamber, the contact surface between the airflow along the fixed path and the food is relatively fixed. This can easily cause uneven heating of the food, resulting in uneven coloring on the surface of the food after processing.

[0026] Example

[0027] Please refer to the following: Figure 1 and Figure 2 This application provides a cooking appliance 10, which can be an air fryer or the like. The air fryer can evaporate the moisture on the surface of vegetables and other foods through high-speed circulating hot air, so that the food can achieve the effect of frying without oil.

[0028] The cooking appliance 10 includes an outer shell 100, a pot body 200, a heating device 400, a fan 500, and a variable flow guide device 300. The pot body 200 is disposed inside the outer shell 100, and the heating device 400 and the fan 500 are both installed in the outer shell 100.

[0029] Specifically, the outer casing 100 may include a bottom shell and a top cover, which may be made of materials such as metal or plastic to improve heat dissipation, reduce the impact of internal heat on the components inside the outer casing 100, and ensure the safety of the cooking appliance 10. It also helps to improve the structural strength of the outer casing 100, extend its service life, ensure the safety of the components inside the cooking appliance 10, and reduce the impact of external vibrations or impacts.

[0030] An internal cavity is formed between the bottom shell and the top cover. The internal cavity can accommodate the pot body 200, and the bottom shell and the top cover can be connected by a fixed connection or a detachable connection. The outer shell 100 also includes structural components connected between the bottom shell and the top cover.

[0031] The pot body 200 can be detachably installed in the inner cavity. The pot body 200 includes a side wall 220 and a bottom wall 210. The side wall 220 surrounds the bottom wall 210 and forms a cooking cavity 260, which is used to hold ingredients to be cooked. The bottom wall 210 can be configured as approximately circular, rectangular, or other shapes; this embodiment does not limit this. A tray can also be provided in the cooking cavity 260. The tray can be installed on the side wall 220 and has a gap between it and the bottom wall 210. The tray can be used to place ingredients. One or more air holes can be formed on the tray, which can penetrate the tray to allow airflow from above or below the tray. It is understood that the number of trays can be one or more; this embodiment does not limit this.

[0032] The tray can be made of materials such as metal, stainless steel, or plastic; this embodiment does not limit the type of material used. The pot body 200 has an opening opposite the bottom wall 210, allowing food to be placed inside and providing airflow. The opening can be configured to have approximately the same shape as the bottom wall 210. The tray provides a flat surface on which food to be cooked can be placed, facilitating food placement and preventing food from piling up and affecting each other.

[0033] The pot body 200 can be made of a magnetic material, such as copper, and its surface can be coated with a non-stick coating. Specifically, the pot body 200 can also be made of stainless steel, which has strong rust resistance, good corrosion resistance, and is more durable and easier to clean. The pot body 200 can also be made of aluminum alloy, which is lightweight, has good heat conductivity, and can quickly conduct heat, making it suitable for short-time cooking. The pot body 200 can also be made of carbon steel, which has high weight resistance, wear resistance, and corrosion resistance, adapting to a wider range of cooking needs and occasions. The surface of the pot body 200 can also be coated with an artificial coating that is very smooth, making the fryer easier to clean and cook with, and reducing unnecessary oil usage.

[0034] The bottom wall 210 includes a first region 211 and a second region 212 surrounding the first region 211. The side wall 220 is connected to the edge of the second region 212 away from the first region 211. The first region 211 may be a generally circular region, and the second region 212 may be a generally annular region.

[0035] The heating device 400 is disposed on the outer casing 100. Specifically, the heating device 400 is disposed on the top cover of the outer casing 100 and located above the opening, with the heating device 400 corresponding to the opening. The heat generated by the heating device 400 can enter the cooking cavity 260 through the opening. The heating device 400 can be, for example, a thermistor, a resistance wire, etc., and this embodiment does not limit it.

[0036] As a more specific implementation, the heating device 400 may include a heating tube, which is arranged correspondingly to the opening. When the heating tube is working, it generates heat. Depending on the heating requirements, heating tubes of different specifications can be used as the heating device 400.

[0037] A fan 500 is disposed within the housing 100 and is used to drive the airflow heated by the heating device 400, forming a hot airflow circulation. Specifically, the fan 500 may include a drive unit 510 and fan blades 520. The drive unit 510 may include a drive shaft, and the fan blades 520 may be made of a magnetic material, such as stainless steel, copper, or aluminum alloy, so that the fan blades 520 can be subjected to the influence of the surrounding magnetic field. The drive unit 510 is disposed in the top housing, and the drive shaft of the drive unit 510 extends toward the direction close to the pot body 200. The fan blades 520 are mounted on the drive shaft, and the drive shaft drives the fan blades 520 to form an airflow. The airflow transfers heat to the food, and the food is heated thoroughly, thus completing the cooking process of the cooking appliance 10. Specifically, the fan 500 is disposed on the side of the heating device 400 away from the bottom wall 210. When the fan 500 is started, it can blow the hot air heated by the heating device 400 into the cooking chamber 260, forming a hot airflow circulation.

[0038] In a more specific embodiment, the orthographic projection of the fan 500 onto the bottom wall 210 is located in the first region 211. The advantage of this arrangement is that the hot airflow generated by the fan 500 can flow directly into the cooking cavity 260 into the first region 211, which is located in the center of the bottom wall 210, thus maximizing the heating of the food in the central area. When heating the food, by guiding the airflow through the ducts to other areas of the bottom wall, all-around heating of the food can be achieved.

[0039] In this embodiment, the drive unit 510 can be a brushless DC motor. A brushless DC motor is a DC motor that uses electronic commutation and has the following advantages compared to a traditional AC motor:

[0040] First, brushless DC motors have a higher energy efficiency ratio: because they do not require current reversal regulation via a traditional commutator, brushless DC motors can stop and start in a shorter time with lower energy consumption, resulting in a higher energy efficiency ratio. Second, brushless DC motors have a longer lifespan: because there are no friction materials (such as carbon brushes) inside the motor, frictional losses are less during operation, leading to a longer lifespan. Third, brushless DC motors are quieter: due to less internal friction, the motor is quieter. Finally, brushless DC motors have a wide speed range: brushless DC motors have a relatively wide speed adjustment range, adapting to different loads and operating conditions.

[0041] Understandably, within the normal power range, the power of the fan 500 determines the rotational speed of the drive unit 510. The rotational speed of the fan 500 can be adjusted by changing its power, thereby changing the airflow velocity within the pot body 200, which in turn changes the flow rate of the internal heat circulation, thus altering the cooking effect of the cooking appliance 10.

[0042] The variable flow guide device 300 is disposed on the housing 100 and is used to change the flow direction of the airflow. Specifically, the variable flow guide device 300 is used to change the flow direction of the hot airflow, thereby controlling the flow direction of the hot airflow at different stages or different procedures of food processing, heating the food in different areas or alternating heating, so that the food is heated more evenly.

[0043] Specifically, the variable airflow guide device 300 has an airflow channel with an air outlet 330 facing the cooking cavity 260. When the heating device 400 is turned on and the fan 500 is started, the fan 500 blows the air heated by the heating device 400 into the airflow channel, and the hot airflow enters the cooking cavity 260 from the air outlet 330. To change the flow direction of the hot airflow, in one embodiment, the airflow channel can be configured as a movable structure. For example, keeping the diameter of the air outlet 330 constant, by changing the orientation of the air outlet 330, the hot airflow has different direction vectors when entering the cooking cavity 260, thereby changing the flow direction of the airflow in the cooking cavity 260 and heating different areas of the food.

[0044] In this embodiment, the air guide channel is configured as a fixed structure, and the diameter of the air outlet 330 is set to be variable. That is, by changing the diameter of the air outlet 330, the direction of heat concentration when the hot air enters the cooking cavity 260 from the air outlet 330 is changed, thus allowing for targeted heating of different areas of the food. Targeted heating here refers to the following: In some application scenarios, when the hot airflow is relatively concentrated, the heat is usually more concentrated in the central area along the flow direction, while the heat in the edge areas is usually less. Therefore, when the food is located in the central area of ​​the flow path, the degree of heating is greater, and the flow path in the central area of ​​the hot airflow is targeted for heating; when the food is located in the edge area of ​​the flow path, the degree of heating is less. In other application scenarios, when the hot airflow is relatively dispersed, the heat is more concentrated in the edge areas along the flow direction than in the central area. Therefore, when the food is located in the edge area of ​​the flow path, the degree of heating is greater, and the flow path in the central area of ​​the hot airflow is targeted for heating. Therefore, changing the diameter of the air outlet 330 is equivalent to changing the area of ​​heat concentration during the hot airflow process, thereby changing the area targeted for heating.

[0045] When the diameter of the air outlet 330 decreases, the hot airflow becomes more concentrated, and the hot airflow focuses on heating the area corresponding to the air outlet 330. When the diameter of the air outlet 330 decreases, the hot airflow becomes relatively more dispersed, and the hot airflow flows along the wall of the air guide channel, resulting in a situation where the heat in the edge area is more concentrated than in the center area.

[0046] For details, please refer to the following: Figure 1 and Figure 3 The variable airflow guiding device 300 includes a top plate 310 and a guide plate 320. The top plate 310 is located on the side of the fan 500 away from the bottom wall 210. The drive unit is located on the side of the top plate 310 away from the bottom wall 210, and the drive shaft of the drive unit 510 passes through the top plate 310. The fan blades 520 are located on the side of the top plate 310 near the bottom wall 210 and are connected to the drive shaft. The guide plate 320 is connected to the edge of the top plate 310 and extends towards the bottom wall 210. The guide plate 320 and the top plate 310 enclose an installation space. The fan blades of the fan 500 and the heating element are located within the installation space. Thus, when the fan 500 is started, hot airflow is formed within the installation space and enters the cooking chamber 260 from the air outlet 330. At this time, the installation space serves as an airflow channel.

[0047] An air outlet 330 is formed at the end of the guide plate 320 away from the top plate 310. Hot airflow generated when the fan 500 and heating device 400 are operating enters the cooking cavity 260 through the air outlet 330. As mentioned above, in this embodiment, the diameter of the air outlet 330 can be changed; that is, the size of the air outlet 330 can be adjusted. The connection between the guide plate 320 and the top plate 310 can be movable, allowing the guide plate 320 to change position relative to the top plate 310, thereby changing the size of the air outlet 330.

[0048] In this embodiment, the guide plate 320 and the top plate 310 are rotatably connected, and the specific rotatable connection method is not limited in this embodiment. As a more specific implementation, the guide plate 320 can be made of flexible material and can be fixed to the top plate 310 by means of hinge or other connection methods. The guide plate 320 can also be configured as a pleated structure. This implementation allows the guide plate 320 to be retracted or expanded, thereby adjusting the diameter of the air outlet 330.

[0049] For example, see Figure 4The adjustable angle β of the guide plate 320 relative to the top plate 310 can be 0°-50°. Within this adjustable angle range, the diameter of the air outlet 330 is moderate, neither too small nor too large. Of course, in other embodiments, the adjustable angle of the guide plate 320 relative to the top plate 310 can also be other values, and this embodiment does not limit this. It should be noted that the adjustable angle of the guide plate 320 relative to the top plate 310 can be continuous, that is, the angle of the guide plate 320 relative to the top plate 310 can be continuously adjusted as needed. The adjustable angle of the guide plate 320 relative to the top plate 310 can also be discontinuous, that is, the angle of the guide plate 320 relative to the top plate 310 can be adjusted to several fixed positions.

[0050] As a more specific implementation, the air outlet 330 can have a first state and a second state. When the air outlet 330 is in the first state, such as... Figure 1 As shown, the air outlet 330 directs airflow to the first region 211. The hot airflow first contacts and heats the food in the first region 211, and then, while flowing within the cooking cavity 260, it contacts and heats the food in other regions. When the air outlet 330 is in the second state, as... Figure 3 As shown, the air outlet 330 directs the airflow to the second region 212. The hot airflow first contacts and heats the food in the second region 212, and then, while flowing within the cooking cavity 260, it contacts and heats the food in other regions. More specifically, when the air outlet 330 is in the first state, its diameter is 'a'; when the air outlet 330 is in the second state, its diameter is 'b', where 'b' is greater than 'a'.

[0051] When the air outlet 330 is in the second state, the hot airflow generated within the installation space flows outward along the guide plate 320 and is primarily guided to the second region 212. When the air outlet 330 is in the first state, due to its smaller diameter, the heat is more concentrated. The hot airflow generated within the installation space flows outward along the guide plate 320 and contracts, primarily guiding to the first region 211. It should be noted that the air outlet 330 can also have one or more other states. In other states, the diameter of the air outlet 330 can be other values, which are not limited in this embodiment.

[0052] The cooking appliance 10 may also include a control unit 600, which controls the movement of the variable airflow guide 300 to adjust the airflow direction. Specifically, the control unit 600 may be electrically connected to the variable airflow guide 300, thereby controlling the operation of the variable airflow guide 300. Simultaneously, the control unit 600 may also be electrically connected to the fan 500 and the heating device 400, thereby controlling the start or stop of the fan 500 and the heating device 400. The cooking appliance 10 may also be equipped with various sensors 700, such as a temperature sensor 700, which can be used to collect the temperature inside the cooking cavity 260. The sensor 700 may be electrically connected to the control unit 600, enabling the control unit 600 to acquire the temperature inside the cooking cavity 260 and control the movement of the variable airflow guide 300 based on the temperature information.

[0053] The control unit 600 may include a processor and a memory. The memory stores computer program instructions and / or application programs configured to execute a predetermined cooking program. The user can issue control commands to cause the processor to invoke the aforementioned computer program instructions and / or application programs.

[0054] The processor may include one or more processing cores. The processor connects to various parts of the entire battery management system using various interfaces and lines, and performs various functions and processes data of the battery management system by running or executing instructions, programs, code sets, or instruction sets stored in memory, and by calling data stored in memory. Optionally, the processor may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 99 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 99 and may be implemented separately through a communication chip.

[0055] The memory may include random access memory (RAM) or read-only memory (ROM). The memory can be used to store instructions, programs, code, code sets, or instruction sets. The memory may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, sound playback functionality, etc.), instructions for implementing the various method examples described below, etc. The data storage area may also store data created during the use of the cooking appliance 10.

[0056] The control unit 600 can be configured with a preset control program, which may include the status information of the air outlet 330. The control unit 600 can then control the air outlet 330 to change its state based on this status information, for example, switching between a first state and a second state. Specifically, the control unit 600 controls the airflow direction by controlling the tilt angle of the guide plate 320, where the tilt angle of the guide plate 320 is the angle between the guide plate 320 and the horizontal plane. The status information of the air outlet 330 can be user-defined or pre-set and stored in the memory by the system based on different ingredients; this embodiment does not limit this.

[0057] In some embodiments, the control unit 600 may continuously control the tilt angle of the air outlet guide plate 320, that is, continuously change the tilt angle of the guide plate 320. Alternatively, it may control the tilt angle of the guide plate 320 intermittently, for example, adjusting the guide plate 320 to a first tilt angle, holding it for a time t, and then adjusting it to a second tilt angle.

[0058] The working principle of the cooking appliance 10 provided in this embodiment is as follows:

[0059] When food needs to be heated, it is evenly placed into the cooking cavity 260. The heating device 400 and the fan 500 are then turned on. The fan 500 blows hot air into the cooking cavity 260. When the food in the first area 211 needs to be heated, the air outlet 330 is adjusted to the first state, thus focusing on heating the food in the first area 211. When the food in the second area 212 needs to be heated, the air outlet 330 is adjusted to the second state, thus focusing on heating the food in the second area 212. During the heating process, the state of the air outlet 330 can be adjusted multiple times to change the direction of the hot airflow, ensuring even heating of the food in different areas. Depending on the heating needs, the air outlet 330 can also be set to alternate between the first and second states at predetermined times.

[0060] In another implementation, such as Figure 5As shown, the variable flow guiding device includes multiple independent guide plates 320, which can be two or more. The tilt angle of each guide plate 320 can be adjusted independently. The control unit 600 controls the adjustment of the tilt angle of each guide plate 320. By changing the tilt angle of the guide plate 320, when the hot airflow blown by the fan 500 collides with the guide plate 320, the flow direction of the hot airflow is changed. Since the tilt angle of each guide plate 320 can be adjusted independently, the tilt angle of each guide plate 320 can be adjusted according to the ingredients in different areas, thus precisely controlling the flow path of the hot airflow. For example, as... Figure 5 As shown, each guide plate 320 is set to the same orientation, and the orientation is... Figure 5 The pot is tilted to the right, directing the hot airflow to the left. Ingredients that require longer heating times can be placed on the left side of the pot, while ingredients that require shorter heating times can be placed on the right side. This allows for the simultaneous processing of different ingredients.

[0061] It is understood that in this embodiment, the tilt angles of different guide plates 320 can be adjusted to be the same or different, and this embodiment does not limit this. At the same time, the control unit 600 can also control each guide plate 320 to continuously or intermittently change its tilt angle, and this embodiment does not limit this.

[0062] In another implementation, such as Figure 6 As shown, the variable flow guiding device includes a top plate 310 and a guide plate 320. The guide plate 320 is connected to the edge of the top plate 310, and the guide plate 320 and the top plate 310 enclose an installation space. The guide plate 320 is slidably disposed on the top plate 310 in a horizontal direction. When it is necessary to change the airflow direction, the control unit 600 controls the guide plate 320 to slide in a horizontal direction, thereby changing the position of the guide plate 320. At this time, the tilt angle of the guide plate 320 can be configured to be fixed or non-fixed. At the same time, the control unit 600 can also control each guide plate 320 to change its position continuously or intermittently; this embodiment does not limit this.

[0063] The cooking appliance 10 proposed in this application embodiment, by setting a variable flow guide device 300, changes the airflow direction within the cooking appliance 10. During the heating process, the airflow direction can be changed according to the different heating requirements of the ingredients, heating the ingredients from different angles, thereby making the heating of the ingredients more uniform.

[0064] It should be noted that, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A cooking appliance characterized by, The cooking appliance comprises: a housing, a pot body is arranged in the housing, the pot body has a cooking cavity; a heating device, the heating device is arranged in the housing; a fan, the fan is arranged in the housing and is used to drive air flow; and a variable air guide device, the variable air guide device is arranged in the housing and is used to change the direction of air flow.

2. The cooking appliance of claim 1, wherein, The variable air guide device has an air guide channel, the air guide channel has an air outlet, the air outlet is directed towards the cooking cavity.

3. The cooking appliance of claim 2, wherein, The size of the air outlet can be changed.

4. The cooking appliance of claim 3, wherein, The variable air guide device comprises a top plate and a guide plate, the guide plate is connected to the edge of the top plate, the guide plate and the top plate enclose a mounting space, the fan and the heating device are located in the mounting space, and the end of the guide plate away from the top plate forms the air outlet.

5. The cooking appliance of claim 4, wherein, The guide plate and the top plate are rotatably connected.

6. The cooking appliance of claim 4, wherein, The guide plate is arranged on the top plate in a horizontal sliding manner.

7. The cooking appliance of claim 3, wherein, The variable air guide device comprises a plurality of guide plates, and the inclination angle of each guide plate can be adjusted.

8. The cooking appliance of any one of claims 4-7, wherein, The pot body comprises a side wall and a bottom wall, the side wall is arranged around the edge of the bottom wall, the side wall and the bottom wall enclose the cooking cavity, the bottom wall comprises a first area and a second area surrounding the first area, the air outlet of the variable air guide device has a first state and a second state, when the air outlet is in the first state, the air outlet guides air flow to the first area, and when the air outlet is in the second state, the air outlet guides air flow to the second area.

9. The cooking appliance of claim 8, wherein, When the air outlet is in the first state, the size of the air outlet is a, and when the air outlet is in the second state, the size of the air outlet is b, b is greater than a.

10. The cooking appliance of any one of claims 4-7, wherein, The cooking appliance further comprises a control unit, the control unit is used to control the variable air guide device to change the inclination angle and / or position of the guide plate in response to a control instruction; and the control unit is configured to change the inclination angle of the guide plate intermittently or continuously.

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