Cooking equipment

Abstract

The utility model discloses cooking equipment which comprises an equipment body, a cooking cavity is formed in the equipment body, and the cooking cavity comprises an installation area and a cooking area which are distributed in the first direction; the cooking fan is rotatably mounted in the mounting area, the axial direction of the cooking fan is the same as the first direction, the cooking fan comprises centrifugal fan blades and axial flow fan blades, and the axial flow fan blades and the centrifugal fan blades are coaxially arranged; wherein the axial flow fan blades are suitable for driving airflow in the cooking area to flow into the mounting area, and the airflow in the mounting area is suitable for flowing into the cooking area along the side wall of the mounting area under the action of the centrifugal fan blades. According to the cooking equipment, through the centrifugal fan blades and the axial flow fan blades, circular flowing of air flow can be achieved, the heat exchange efficiency is improved, flowing of the air flow is accelerated, the cooking time is shortened, the static pressure and penetrating power of the air flow can be improved, the heat exchange intensity between the air flow and food is enhanced, the food is rapidly colored, and the satisfaction degree of a user is improved.

Description

Technical Field

[0001] This application relates to the field of cooking technology, and more particularly to a cooking device. Background Art

[0002] As a new type of cooking tool, the air fryer, which focuses on oil-free cooking, has received much attention and favor since its development and launch. Due to its healthy cooking method, the air fryer has gradually entered thousands of households. The air fryer mainly works by using hot air to penetrate the food, remove the moisture from the food, and then cook it.

[0003] With the increasing development of air fryers, consumers have higher and higher requirements for the cooking speed of air fryers. They not only require fast cooking speed, but also faster browning. The key to improving cooking speed and browning is to improve the convective heat transfer intensity of the airflow. The core lies in how to improve the working capacity, static pressure and hot air penetration of the cooking fan blades. There is room for improvement. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a cooking device that can realize the cooking function of a cooking device, and can achieve airflow circulation, improve heat exchange efficiency, accelerate airflow, shorten cooking time, and further enhance the static pressure and penetrating power of the airflow, thereby increasing the heat exchange intensity between the airflow and the food, allowing the food to brown quickly, and improving user satisfaction.

[0005] A cooking device according to an embodiment of this application includes: a device body, wherein a cooking cavity is formed within the device body, the cooking cavity including an installation area and a cooking area distributed along a first direction; a cooking fan, wherein the cooking fan is rotatably mounted in the installation area, and the axial direction of the cooking fan is the same as the first direction, and the cooking fan includes centrifugal fan blades and axial fan blades, the axial fan blades being coaxially arranged with the centrifugal fan blades; wherein the axial fan blades are adapted to drive airflow in the cooking area to flow into the installation area, and the airflow in the installation area is adapted to flow along the side wall of the installation area to the cooking area under the action of the centrifugal fan blades.

[0006] According to the embodiments of the present application, the cooking device can achieve the cooking function of cooking device by setting a cooking fan to allow airflow to exchange heat with food. Furthermore, the rotation of centrifugal fan blades and axial fan blades relative to the device body can realize the circulation of airflow, improve heat exchange efficiency, and generate negative pressure at the axial fan blades to accelerate the flow of airflow and shorten the cooking time. In addition, the combined action of centrifugal fan blades and axial fan blades can improve the static pressure and penetrating power of airflow, enhance the heat exchange intensity between airflow and food, and make food brown quickly, which is conducive to improving user satisfaction.

[0007] According to some embodiments of the cooking device of this application, the cooking fan further includes a first mounting part and a second mounting part, the second mounting part being located within the first mounting part and coaxially distributed, the centrifugal fan blades being disposed in the first mounting part, and the axial fan blades being disposed in the second mounting part.

[0008] According to some embodiments of the cooking apparatus of this application, the centrifugal fan blade includes a drive blade portion and a connecting blade portion, the connecting blade portion being connected to the outside of the first mounting portion and extending radially along the first mounting portion, the drive blade portion being connected to the connecting blade portion and extending axially relative to the connecting blade portion along the first mounting portion.

[0009] According to some embodiments of the cooking apparatus of this application, the axial fan blade is located on the side of the second mounting portion facing the cooking area, and the drive blade portion is located on the side of the connecting blade portion facing the cooking area.

[0010] According to some embodiments of the cooking apparatus of this application, the angle at which the axial fan blade is bent relative to the second mounting portion is smaller than the angle at which the drive blade portion is bent relative to the connecting blade portion.

[0011] According to some embodiments of the cooking device of this application, the cooking fan further includes a connecting portion, the second mounting portion is located in the middle of the first mounting portion and is spaced apart from the first mounting portion, and the second mounting portion is connected to the first mounting portion through the connecting portion.

[0012] According to some embodiments of the cooking device of this application, there are multiple connecting portions, and the multiple connecting portions are spaced apart in the circumferential direction of the first mounting portion, and a weight-reducing hole is formed between two adjacent connecting portions.

[0013] According to some embodiments of the cooking apparatus of this application, the first mounting part is constructed in an annular shape, and the inner diameter of the first mounting part is larger than the outer diameter of the axial fan blade.

[0014] According to some embodiments of the cooking apparatus of this application, the axial fan blade has a circumferentially extending guide groove or guide arc surface on the side opposite to the second mounting portion.

[0015] According to some embodiments of the cooking apparatus of this application, the outer diameter of the centrifugal fan blade is D0, and satisfies: 120mm≤D0≤130mm; and / or, the outer diameter of the axial fan blade is D1, and satisfies: 0.25≤D1 / D0≤0.33; and / or, the height of the centrifugal fan blade is H0, and satisfies: 12mm≤H0≤20mm; and / or, the height of the axial fan blade is H1, and satisfies: 0.28≤H1 / H0≤0.39.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a cross-sectional schematic diagram of a cooking apparatus according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of a cooking fan according to an embodiment of this application;

[0020] Figure 3 This is a front view of a cooking fan according to an embodiment of this application;

[0021] Figure 4 This is a side view of a cooking fan according to an embodiment of this application.

[0022] Figure label:

[0023] Cooking equipment 100,

[0024] Equipment body 1, cooking cavity 11, installation area 111, cooking area 112, installation cavity 12.

[0025] Cooking fan 2, centrifugal fan blade 21, drive blade section 211, connecting blade section 212, centrifugal blade section 213, axial fan blade 22, axial blade section 221, guide arc surface 222, first mounting section 23, second mounting section 24, connecting section 25, weight reduction hole 26.

[0026] Heating element 3, drive motor 4, cooling fan 5. DETAILED DESCRIPTION

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] The following is for reference. Figures 1-4 The cooking device 100 according to the embodiments of this application can realize the cooking function of the cooking device 100 by setting the cooking fan 2, and the airflow can be circulated by the centrifugal fan blade 21 and the axial fan blade 22, which can improve the heat exchange efficiency, accelerate the airflow, and shorten the cooking time. Furthermore, the combined action of the centrifugal fan blade 21 and the axial fan blade 22 can improve the static pressure and penetration of the airflow, enhance the heat exchange intensity between the airflow and the food, and make the food brown quickly, which is conducive to improving user satisfaction.

[0031] like Figure 1 As shown, a cooking device 100 according to one embodiment of this application includes: a device body 1 and a cooking fan 2.

[0032] A cooking chamber 11 is formed inside the device body 1. The cooking chamber 11 includes an installation area 111 and a cooking area 112 distributed along a first direction. A cooking fan 2 is rotatably installed in the installation area 111, and the axis of the cooking fan 2 is the same as the first direction. The cooking fan 2 includes a centrifugal fan blade 21 and an axial fan blade 22, and the axial fan blade 22 is coaxially arranged with the centrifugal fan blade 21. The axial fan blade 22 is adapted to drive the airflow in the cooking area 112 to flow into the installation area 111, and the airflow in the installation area 111 is adapted to flow along the side wall of the installation area 111 to the cooking area 112 under the action of the centrifugal fan blade 21.

[0033] Specifically, the cooking device 100 is used to allow airflow to flow inside it to exchange heat with the food and remove moisture from the food, thereby enabling the food to be baked or fried, etc. That is, the cooking device 100 in this application can be an air fryer, an air oven, or an air microwave oven, etc. The following description will take an air fryer as an example.

[0034] The cooking device 100 includes a device body 1 and a cooking fan 2. The cooking fan 2 is used to accelerate the flow of air, enhance the static pressure and penetrating power of the air, thereby enhancing the heat exchange intensity between the air and the food, shortening the cooking time, and enabling the food to brown quickly. The device body 1 serves as the shell structure of the cooking device 100 and can install and protect the cooking fan 2 to ensure the reliable operation of the cooking fan 2.

[0035] Furthermore, a cooking cavity 11 is formed within the device body 1. The cooking cavity 11 provides a heat exchange space, allowing airflow and food to exchange heat within it. The cooking cavity 11 includes an installation area 111 and a cooking area 112. The cooking area 112 is used to hold food, while the installation area 111 is used to install the cooking fan 2. By distributing the installation area 111 and the cooking area 112 along a first direction, the cooking fan 2 and the food can be separated along the first direction to avoid interference between them. This also prevents the cooking fan 2 from occupying the internal space of the cooking area 112, reducing the volume of the cooking area 112, and also prevents the food from affecting the cooking fan 2, causing it to malfunction or reduce its efficiency.

[0036] The first direction is vertical, and the installation area 111 can be set above the cooking area 112. The cooking fan 2 can be set above the food, so that the airflow can flow from bottom to top under the action of the cooking fan 2 to pass through the area where the food is located and exchange heat with the food, so as to realize the cooking function of the cooking device 100.

[0037] Meanwhile, the cooking fan 2 can rotate relative to the device body 1, and during the rotation, it can accelerate the flow of air, enhance the static pressure and penetrating force of the airflow, and make the axis of the cooking fan 2 the same as the first direction, so that the cooking fan 2 can extend in the horizontal direction, which can increase the facing area between the cooking fan 2 and the food, thereby increasing the flow of air through the food, improving heat exchange efficiency, and shortening the cooking time.

[0038] Furthermore, the cooking fan 2 includes centrifugal fan blades 21 and axial fan blades 22. The centrifugal fan blades 21 allow airflow to be discharged radially, while the axial fan blades 22 allow airflow to flow axially. By coaxially arranging the centrifugal fan blades 21 and axial fan blades 22, both can be distributed directly opposite the food along the first direction. This facilitates heat exchange between the airflow and the food under the combined action of the centrifugal fan blades 21 and axial fan blades 22, thereby cooking the food. Moreover, by coaxially arranging the centrifugal fan blades 21 and axial fan blades 22, the space occupied by the cooking fan 2 in the horizontal direction can be reduced, which is beneficial for the arrangement of the cooking fan 2.

[0039] It should be noted that the axial fan blade 22 is characterized by allowing airflow to flow along its own axis, that is, from one side to the other. When the axial fan blade 22 rotates, it exerts a force on the air, causing the air to accelerate and move along its own axis. Furthermore, the design of the axial fan blade 22 will affect the direction of airflow and can be flexibly set according to specific needs.

[0040] The axial fan blade 22 can drive the airflow in the cooking zone 112 to the installation zone 111. That is, the axial fan blade 22 can make the airflow flow from bottom to top along its own axis and exchange heat with the food during the flow. The centrifugal fan blade 21 can pressurize the airflow in the installation zone 111 and drive the airflow in the installation zone 111 to be discharged radially and flow along the side wall of the installation zone 111 to the cooking zone 112. This can realize the circulation of airflow in the cooking chamber 11, which can improve the heat exchange efficiency between the airflow and the food and shorten the cooking time. In addition, during the rotation of the cooking fan 2, a negative pressure can be formed at the axial fan blade 22 to quickly draw the airflow in the cooking zone 112 into the installation zone 111, which can further accelerate the airflow and shorten the cooking time. The combined action of the centrifugal fan blade 21 and the axial fan blade 22 can improve the static pressure and penetration of the airflow, enhance the heat exchange intensity between the airflow and the food, and make the food brown quickly.

[0041] According to the embodiments of this application, the cooking device 100 can exchange heat between the airflow and the food by setting the cooking fan 2, so as to realize the cooking function of the cooking device 100. In addition, the rotation of the centrifugal fan blade 21 and the axial fan blade 22 relative to the device body 1 can realize the circulation of airflow, improve the heat exchange efficiency, and generate negative pressure at the axial fan blade 22 to accelerate the airflow and shorten the cooking time. Furthermore, the combined action of the centrifugal fan blade 21 and the axial fan blade 22 can improve the static pressure and penetrating power of the airflow, enhance the heat exchange intensity between the airflow and the food, and make the food brown quickly, which is conducive to improving user satisfaction.

[0042] In some embodiments, the cooking fan 2 further includes a first mounting portion 23 and a second mounting portion 24, the second mounting portion 24 being located within the first mounting portion 23 and coaxially distributed, the centrifugal fan blade 21 being disposed in the first mounting portion 23, and the axial fan blade 22 being disposed in the second mounting portion 24.

[0043] Specifically, the first mounting part 23 and the second mounting part 24 are used to set the centrifugal fan blade 21 and the axial fan blade 22. Setting the centrifugal fan blade 21 in the first mounting part 23 can realize the installation of the centrifugal fan blade 21 and ensure the reliable operation of the centrifugal fan blade 21. Setting the axial fan blade 22 in the second mounting part 24 can realize the installation of the axial fan blade 22 and ensure the reliable operation of the centrifugal fan blade 21. Furthermore, the first mounting part 23 and the second mounting part 24 are coaxially set so that the centrifugal fan blade 21 and the axial fan blade 22 can be coaxially set through the first mounting part 23 and the second mounting part 24, thereby reducing the space occupied by the cooking fan 2 in the horizontal direction. At the same time, setting the second mounting part 24 in the first mounting part 23 can set the axial fan blade 22 in the centrifugal fan blade 21, thereby further reducing the space occupied by the cooking fan 2 in the vertical direction, which is beneficial to the setting of the cooking fan 2.

[0044] It should be noted that the centrifugal fan blade 21 and the axial fan blade 22 are coaxially arranged, and the axial fan blade 22 is arranged inside the centrifugal fan blade 21 so that when the cooking fan 2 rotates, negative pressure can be generated at the axial fan blade 22 to accelerate the flow of air and enhance the static pressure and penetrating power of the airflow, so as to shorten the cooking time and make the food color quickly.

[0045] In some embodiments, the centrifugal fan blade 21 includes a drive blade portion 211 and a connecting blade portion 212. The connecting blade portion 212 is connected to the outside of the first mounting portion 23 and extends radially along the first mounting portion 23. The drive blade portion 211 is connected to the connecting blade portion 212 and extends axially relative to the connecting blade portion 212 along the first mounting portion 23.

[0046] Specifically, the connecting blade portion 212 is used to install the centrifugal fan blade 21, and the driving blade portion 211 is used to drive the airflow. Connecting the driving blade portion 211 to the connecting blade portion 212 makes the centrifugal fan blade 21 a single unit, which improves the overall structural strength of the centrifugal fan blade 21 and enhances the reliability of its operation. Simultaneously, connecting the connecting blade portion 212 to the outside of the first mounting portion 23 allows the centrifugal fan blade 21 to be positioned outside the first mounting portion 23, preventing the first mounting portion 23 from interfering with the centrifugal fan blade 21's movement. By blocking the airflow and reducing its speed, and by extending the connecting blade portion 212 radially along the first mounting portion 23, the centrifugal fan blade 21 can be extended radially along the first mounting portion 23. This connects the area where the axial fan blade 22 is located to the side wall of the mounting area 111 through the centrifugal fan blade 21, allowing the airflow to flow from the axial fan blade 22 to the side wall of the mounting area 111 along the centrifugal fan blade 21. This guides the airflow and ensures the accuracy of the airflow direction.

[0047] Furthermore, by extending the drive blade portion 211 protruding outward relative to the connecting blade portion 212 along the axial direction of the first mounting portion 23, the drive blade portion 211 and the connecting blade portion 212 can be bent and connected, which can increase the connection length between the two, improve the connection strength and reliability between the two, and allow the drive blade portion 211 to extend along the first direction, which can increase the setting length of the drive blade portion 211 along the first direction, so that the drive blade portion 211 can drive more airflow to flow rapidly in the same time, thereby improving the heat exchange efficiency between the airflow and the food and shortening the cooking time.

[0048] In some embodiments, the axial fan blade 22 is located on the side of the second mounting portion 24 facing the cooking area 112, and the drive blade portion 211 is located on the side of the connecting blade portion 212 facing the cooking area 112.

[0049] Specifically, the axial fan blade 22 is positioned on the side of the second mounting portion 24 facing the cooking area 112, and the axial fan blade 22 is connected to the second mounting portion 24. This allows the axial fan blade 22 to be tilted relative to the side of the second mounting portion 24 facing the cooking area 112, so that the airflow in the cooking area 112 can be quickly drawn into the mounting area 111 along the first direction under the action of the axial fan blade 22. During this process, the airflow can exchange heat with the food. At the same time, the drive blade portion 211 is positioned on the side of the connecting blade portion 212 facing the cooking area 112, so that the airflow drawn into the mounting area 111 under the action of the axial fan blade 22 can flow along the centrifugal fan blade 21 to the side wall of the mounting area 111, and further flow along the side wall of the mounting area 111 into the cooking area 112, thereby realizing the circulation of airflow, improving the heat exchange efficiency between the airflow and the food, and helping to shorten the cooking time.

[0050] In some embodiments, the angle at which the axial fan blade 22 is bent relative to the second mounting portion 24 is smaller than the angle at which the drive blade portion 211 is bent relative to the connecting blade portion 212.

[0051] In other words, the angle between the axial fan blade 22 and the plane where the second mounting part 24 is located is smaller than the angle between the driving blade part 211 and the connecting blade part 212. This makes the included angle between the axial fan blade 22 and the plane where the second mounting part 24 is located smaller, thereby improving the airflow condition and achieving the purpose of increasing static pressure and efficiency. It also makes the angle between the driving blade part 211 and the connecting blade part 212 larger, thereby increasing the extension length of the driving blade part 211 along the first direction. This allows the driving blade part 211 to drive more airflow in the same amount of time, thereby improving the heat exchange efficiency between the airflow and the food and shortening the cooking time.

[0052] In some embodiments, the cooking fan 2 further includes a connecting portion 25, and a second mounting portion 24 is located in the middle of the first mounting portion 23 and is spaced apart from the first mounting portion 23. The second mounting portion 24 is connected to the first mounting portion 23 through the connecting portion 25.

[0053] Specifically, by connecting the first mounting part 23 and the second mounting part 24 through the connecting part 25, the cooking fan 2 can be integrated into a whole, which can improve the overall structural strength of the cooking fan 2 and thus improve the reliability of the cooking fan 2. At the same time, by placing the second mounting part 24 in the middle of the first mounting part 23, the axial fan blade 22 can be placed in the middle of the centrifugal fan blade 21, so as to generate negative pressure at the axial fan blade 22 and accelerate the airflow. The cooking fan 2 can also be placed in the middle of the mounting area 111 so that the airflow can circulate evenly in the cooking chamber 11, ensuring that all parts of the food are heated evenly. Furthermore, by distributing the first mounting part 23 and the second mounting part 24 separately, the centrifugal fan blade 21 and the axial fan blade 22 can be distributed separately to avoid interference between them, which would reduce the efficiency of the cooking fan 2.

[0054] In some embodiments, there are multiple connecting portions 25, and the multiple connecting portions 25 are distributed circumferentially in the first mounting portion 23, with a weight reduction hole 26 formed between two adjacent connecting portions 25.

[0055] Specifically, the connecting part 25 is used to connect the first mounting part 23 and the second mounting part 24. The connecting part 25 can be set to multiple, that is, the number of connecting parts 25 can be two, three or more, so that the first mounting part 23 and the second mounting part 24 can be connected at the same time through multiple connecting parts 25, which can improve the connection reliability between the first mounting part 23 and the second mounting part 24. Furthermore, by distributing multiple connecting parts 25 at intervals in the circumferential direction of the first mounting part 23, the first mounting part 23 and the second mounting part 24 can be connected at multiple positions at the same time, which can improve the connection stability between the two.

[0056] Furthermore, a weight-reducing hole 26 is formed between two adjacent connecting parts 25. The weight-reducing hole 26 is used to reduce the overall weight of the cooking fan 2, thereby increasing the rotation speed of the cooking fan 2 and accelerating the airflow. Since there are multiple connecting parts 25, there are also multiple weight-reducing holes 26. Thus, the weight of the cooking fan 2 can be reduced simultaneously through multiple weight-reducing holes 26, thereby improving the weight reduction effect of the cooking fan 2.

[0057] For example, such as Figures 2-3 As shown, there are six connecting parts 25, which are spaced apart, allowing the first mounting part 23 and the second mounting part 24 to be connected simultaneously, improving the reliability and stability of the connection. Similarly, there are six weight-reducing holes 26, which collectively reduce the weight of the cooking fan 2, effectively enhancing its weight-reduction effect. It should be noted that the number of connecting parts 25 and weight-reducing holes 26 is not limited to that described in this embodiment and can be flexibly set according to specific circumstances and space constraints, while ensuring the overall structural strength of the cooking fan 2.

[0058] In some embodiments, the first mounting portion 23 is constructed in an annular shape, and the inner diameter of the first mounting portion 23 is larger than the outer diameter of the axial flow fan blade 22.

[0059] Specifically, the first mounting part 23 and the second mounting part 24 are used to install the centrifugal fan blade 21 and the axial fan blade 22. The second mounting part 24 is located in the middle of the first mounting part 23, so that the axial fan blade 22 can be placed in the middle of the centrifugal fan blade 21 to realize the installation of the centrifugal fan blade 21 and the axial fan blade 22. Moreover, the first mounting part 23 is constructed as a ring, and the inner diameter of the first mounting part 23 is constructed to be larger than the outer diameter of the axial fan blade 22, so as to avoid interference between the first mounting part 23 and the axial fan blade 22, which would cause the axial fan blade 22 to be unable to rotate or to be damaged and fail.

[0060] In some embodiments, the axial fan blade 22 has a circumferentially extending guide groove or guide arc surface 222 on the side opposite to the second mounting portion 24.

[0061] Specifically, the axial fan blade 22 is connected to the second mounting part 24 to realize the installation of the axial fan blade 22. The axial fan blade 22 is connected to the radial outer side of the second mounting part 24. A guide groove or guide arc surface 222 is formed on the side of the axial fan blade 22 away from the second mounting part 24. The guide groove or guide arc surface 222 can guide the flow of air. The guide groove or guide arc surface 222 extends along the circumference of the axial fan blade 22 to realize the turbocharging effect, which is conducive to increasing the flow rate of air, thereby improving the heat exchange efficiency between airflow and food and shortening the cooking time.

[0062] In such Figure 2 In the embodiment shown, the axial fan blade 22 is formed with a guide arc surface 222, which is used to guide the airflow to improve heat exchange efficiency and shorten cooking time.

[0063] In other embodiments, the axial fan blade 22 includes a plurality of axial blade portions 221, which are spaced apart in the circumferential direction of the second mounting portion 24; and / or, the centrifugal fan blade 21 includes a plurality of centrifugal blade portions 213, which are spaced apart in the circumferential direction of the first mounting portion 23.

[0064] Specifically, the axial fan blade 22 is used to drive the airflow in the cooking zone 112 to the installation zone 111. That is, the axial fan blade 22 can be used to quickly draw the airflow in the cooking zone 112 into the installation zone 111. The axial fan blade 22 includes multiple axial blade sections 221. That is, the number of axial blade sections 221 can be two, three or more. Through the joint action of multiple axial blade sections 221, the airflow in the cooking zone 112 can be quickly drawn into the installation zone 111, which can improve the reliability of the airflow flowing from the cooking zone 112 to the installation zone 111. The multiple axial blade sections 221 are spaced apart in the circumferential direction of the second installation part 24, so that the airflow can flow evenly under the action of multiple axial blade sections 221, thereby enabling the airflow to exchange heat evenly with the food. The multiple axial blade sections 221 can be connected to the second installation part 24 to realize the installation of multiple axial blade sections 221 and ensure the reliable operation of multiple axial blade sections 221.

[0065] Furthermore, the centrifugal fan blade 21 is used to drive the airflow in the installation area 111 to flow along the side wall of the installation area 111 into the cooking area 112. That is, the centrifugal fan blade 21 can deliver the airflow in the installation area 111 to the cooking area 112. The centrifugal fan blade 21 includes multiple centrifugal blade sections 213. That is, the number of centrifugal blade sections 213 can be two, three or more. Through the joint action of multiple centrifugal blade sections 213, the airflow in the installation area 111 can be delivered to the cooking area 112, which can improve the reliability of the driving airflow from the installation area 111 to the cooking area 112. The multiple centrifugal blade sections 213 are spaced apart in the circumferential direction of the first installation part 23, so that the airflow can flow evenly under the action of multiple centrifugal blade sections 213. The multiple centrifugal blade sections 213 can be connected to the first installation part 23 to realize the installation of multiple centrifugal blade sections 213 and ensure the reliable operation of multiple centrifugal blade sections 213.

[0066] In some embodiments, the outer diameter of the centrifugal fan blade 21 is D0, and satisfies: 120mm≤D0≤130mm; and / or, the outer diameter of the axial fan blade 22 is D1, and satisfies: 0.25≤D1 / D0≤0.33; and / or, the height of the centrifugal fan blade 21 is H0, and satisfies: 12mm≤H0≤20mm; and / or, the height of the axial fan blade 22 is H1, and satisfies: 0.28≤H1 / H0≤0.39.

[0067] Specifically, the cooking fan 2 is installed within the installation area 111, and the axial fan blade 22 is located in the middle of the centrifugal fan blade 21. Therefore, the outer diameters of both the axial fan blade 22 and the centrifugal fan blade 21 should not be too large or too small. If they are too large, they will occupy too much space, which is not conducive to the installation of the cooking fan 2; if they are too small, they will weaken the driving effect on the airflow, which is not conducive to the operation of the cooking fan 2. Figure 4 As shown, the outer diameter of the centrifugal fan blade 21 can be set as D0, and the outer diameter of the axial fan blade 22 can be set as D1. D0 can be between 120mm and 130mm, that is, D0 can be 120mm, 125mm or 130mm, etc., and the result of D1 / D0 can be between 0.25 and 0.33. For example, D1 / D0 can be 0.264, D0 can be 125mm, that is, D1 can be 33mm. Thus, by reasonably designing the outer diameter of the centrifugal fan blade 21 and the axial fan blade 22, the centrifugal fan blade 21 and the axial fan blade 22 can work reliably, thereby improving the reliability of the cooking fan 2.

[0068] Furthermore, since the cooking fan 2 is installed within the installation area 111, the heights of the centrifugal fan blade 21 and the axial fan blade 22 along the first direction must not be too large or too small. That is, the heights of the centrifugal fan blade 21 and the axial fan blade 22 must not be too large or too small. If they are too large, it will result in excessive space occupation, which is not conducive to the installation of the cooking fan 2; if they are too small, it will result in weakened airflow driving effect, which is not conducive to the operation of the cooking fan 2. Figure 4 As shown, the height of the centrifugal fan blade 21 can be set as H0, and the height of the axial fan blade 22 can be set as H1. H0 can be between 12mm and 20mm, that is, H0 can be 12mm, 16mm or 20mm, etc., and the result of H1 / H0 can be between 0.28 and 0.39. For example, H1 / H0 can be 0.375, H0 can be 16mm, that is, H1 can be 6mm. Thus, by reasonably designing the height of the centrifugal fan blade 21 and the axial fan blade 22, the centrifugal fan blade 21 and the axial fan blade 22 can work reliably, thereby improving the reliability of the cooking fan 2.

[0069] In other embodiments, such as Figure 1 As shown, the cooking device 100 also includes a heating element 3, which is installed at the connection between the installation area 111 and the cooking area 112. The axial flow fan blade 22 is adapted to drive the airflow in the cooking area 112 to flow through the heating element 3 and into the installation area 111. The device body 1 also has an installation cavity 12, which is spaced apart from the cooking cavity 11. The installation cavity 12 also has a drive motor 4 and a cooling fan 5. The motor shaft of the drive motor 4 is connected to the cooling fan 5 and the cooking fan 2 in sequence.

[0070] Specifically, the cooking device 100 is used to cook food. A heating element 3 can be installed inside the cooking device 100. The heating element 3 can be a heating tube or a heating plate, etc. The heating element 3 can generate heat, and the food can be cooked by the heat generated by the heating element 3. The heating element 3 is installed at the connection between the installation area 111 and the cooking area 112, that is, the heating element 3 is placed between the cooking fan 2 and the food, so that the axial fan blade 22 can drive the airflow in the cooking area 112 to flow through the heating element 3 and then into the installation area 111. That is, when the airflow flows from the cooking area 112 into the installation area 111 in the first direction under the action of the axial fan blade 22, it can pass through the heating element 3 and exchange heat with the heating element 3 to carry the heat generated by the heating element 3. Thus, when the airflow carrying the heat generated by the heating element 3 circulates in the cooking cavity 11, it can further exchange heat with the food, thereby realizing the cooking of the food and meeting the user's needs.

[0071] Furthermore, the cooking device 100 includes a cooking cavity 11 and a mounting cavity 12. The cooking cavity 11 is used to cook food, and the mounting cavity 12 is used to mount the drive motor 4 and the cooling fan 5. By separating the mounting cavity 12 from the cooking cavity 11, interference between the two can be avoided. This also prevents the drive motor 4 and the cooling fan 5 from occupying space in the cooking cavity 11, thus reducing the volume of the cooking cavity 11. It also prevents food in the cooking cavity 11 from entering the mounting cavity 12 and affecting the drive motor 4 and the cooling fan 5, causing them to malfunction or have reduced efficiency.

[0072] Furthermore, by placing the drive motor 4 and the cooling fan 5 within the mounting cavity 12, the drive motor 4 and the cooling fan 5 can be installed within the cooking equipment 100. The drive motor 4 can drive the cooking fan 2 to rotate, ensuring the reliable operation of the cooking fan 2. The cooling fan 5 is used to cool the drive motor 4, ensuring its reliable operation. By connecting the motor shaft of the drive motor 4 sequentially to the cooling fan 5 and the cooking fan 2, the driving force of the drive motor 4 can be transmitted to the cooling fan 5 and the cooking fan 2 through the motor shaft. This allows the drive motor 4 to simultaneously drive the cooking fan 2 and the cooling fan 5 to rotate, reducing the number of drive motors 4 required and lowering the installation cost.

[0073] Furthermore, it should be noted that, according to the simulation results of the cooking device 100 according to the embodiments of this application, the average wind speed at the middle of the food can reach up to 3.05 m / s, the wind speed can be increased by at least 28.8%, the dehydration rate of the food can reach up to 48.1%, the dehydration rate can be increased by 16.7%, and the static pressure of the airflow can be increased by 22.16%.

[0074] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0075] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cooking device, characterized in that, include: The device body has a cooking cavity formed therein, the cooking cavity including an installation area and a cooking area distributed along a first direction; A cooking fan is rotatably mounted in the mounting area, and the axial direction of the cooking fan is the same as the first direction. The cooking fan includes centrifugal fan blades and axial fan blades, and the axial fan blades are coaxially arranged with the centrifugal fan blades. The axial fan blades are adapted to drive the airflow in the cooking area to the installation area, and the airflow in the installation area is adapted to flow along the side wall of the installation area to the cooking area under the action of the centrifugal fan blades.

2. The cooking apparatus according to claim 1, characterized in that, The cooking fan also includes a first mounting part and a second mounting part, the second mounting part being located within the first mounting part and coaxially distributed, the centrifugal fan blades being disposed in the first mounting part, and the axial fan blades being disposed in the second mounting part.

3. The cooking apparatus according to claim 2, characterized in that, The centrifugal fan blade includes a drive blade portion and a connecting blade portion. The connecting blade portion is connected to the outside of the first mounting portion and extends radially along the first mounting portion. The drive blade portion is connected to the connecting blade portion and extends axially relative to the connecting blade portion along the first mounting portion.

4. The cooking apparatus according to claim 3, characterized in that, The axial fan blade is located on the side of the second mounting portion facing the cooking area, and the drive blade portion is located on the side of the connecting blade portion facing the cooking area.

5. The cooking apparatus according to claim 3, characterized in that, The angle at which the axial fan blade is bent relative to the second mounting portion is smaller than the angle at which the drive blade portion is bent relative to the connecting blade portion.

6. The cooking apparatus according to claim 2, characterized in that, The cooking fan also includes a connecting part, and the second mounting part is located in the middle of the first mounting part and is spaced apart from the first mounting part. The second mounting part is connected to the first mounting part through the connecting part.

7. The cooking apparatus according to claim 6, characterized in that, There are multiple connecting parts, and the multiple connecting parts are distributed at intervals in the circumferential direction of the first mounting part, and a weight reduction hole is formed between two adjacent connecting parts.

8. The cooking apparatus according to claim 2, characterized in that, The first mounting part is constructed in a circular shape, and the inner diameter of the first mounting part is larger than the outer diameter of the axial flow fan blade.

9. The cooking apparatus according to claim 2, characterized in that, The axial flow fan blade has a circumferentially extending guide groove or guide arc surface on the side opposite to the second mounting part.

10. The cooking apparatus according to claim 1, characterized in that, The outer diameter of the centrifugal fan blade is D0, and satisfies: 120mm≤D0≤130mm; And / or, the outer diameter of the axial flow fan blade is D1, and satisfies: 0.25≤D1 / D0≤0.33; And / or, the height of the centrifugal fan blade is H0, and satisfies: 12mm≤H0≤20mm; And / or, the height of the axial fan blade is H1, and satisfies: 0.28≤H1 / H0≤0.39.

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