Baking appliance

Abstract

The utility model relates to a baking appliance which comprises an inner container provided with a cooking cavity, the inner container comprises an air duct plate, the air duct plate is provided with an air inlet area and an air outlet area which are communicated with the cooking cavity, and the air outlet area is arranged on the peripheral side of the air inlet area; the fan cover is arranged on the side face, away from the cooking cavity, of the air duct plate, an air guide cavity is defined by the fan cover and the air duct plate, and the air inlet area and the air outlet area communicate with the air guide cavity; the fan assembly comprises an impeller arranged in the air guide cavity and a motor which is arranged outside the air guide cavity and drives the impeller to rotate; the air inlet area is concavely arranged in the air guiding cavity in the axis direction of the impeller, and at least part of the air inlet area extends into the impeller. The impeller can drive gas in the cooking cavity to enter the air guide cavity through the air inlet area, the gas entering the air guide cavity can flow towards the air inlet end of the impeller, and then the impeller blows the gas to the air outlet area located on the peripheral side of the air inlet area, so that the gas in the air guide cavity can be blown out into the cooking cavity through the air outlet area. The heat in the cooking cavity is uniformly distributed, and the cooking effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a baking appliance. Background Technology

[0002] Baking appliances such as electric ovens typically include an inner cavity and a fan to ensure even heat distribution within the cavity.

[0003] However, existing circulating air devices usually have low air volume, resulting in uneven heat distribution inside the inner pot. This may cause some parts of the food to be overheated and become dry and burnt, while other parts are not fully cooked, affecting the cooking effect. Utility Model Content

[0004] Therefore, it is necessary to provide a baking appliance that can achieve a large air volume output and improve cooking results to address the above problems.

[0005] This utility model provides a baking appliance, comprising: an inner liner having a cooking cavity, the inner liner including an air duct plate, the air duct plate having an air inlet area and an air outlet area communicating with the cooking cavity, the air outlet area being located on the outer periphery of the air inlet area; a fan hood, disposed on the side of the air duct plate opposite to the cooking cavity, and forming an air guide cavity with the air duct plate, the air inlet area and the air outlet area both communicating with the air guide cavity; and a fan assembly including an impeller disposed within the air guide cavity and a motor disposed outside the air guide cavity and driving the impeller to rotate; the air inlet area being recessed into the air guide cavity along the axial direction of the impeller, and at least partially extending into the impeller.

[0006] In the aforementioned baking appliance, when the motor drives the impeller to rotate, the impeller can drive the gas in the cooking chamber to enter the air guide chamber through the air inlet area. Since the air inlet area is recessed towards the air guide chamber and extends at least partially into the impeller, the gas entering the air guide chamber can flow towards the air inlet end of the impeller. The impeller then blows the gas towards the air outlet area located on the outer periphery of the air inlet area, so that the gas in the air guide chamber can be blown out into the cooking chamber through the air outlet area to achieve heat circulation in the cooking chamber, making the heat distribution in the cooking chamber uniform and improving the cooking effect.

[0007] In one embodiment, the impeller has a cavity at its center with an opening facing the air duct plate, and at least a portion of the air inlet area extends into the cavity.

[0008] With this configuration, the gas entering the air guide cavity can enter the cavity, and the gas in the cavity is thrown towards the outer periphery of the impeller under the action of centrifugal force, so that the gas blown out by the impeller can flow towards the air outlet area located on the outer periphery of the air inlet area; in addition, the cavity can also prevent the air inlet area and the impeller from interfering with each other, ensuring the normal rotation of the impeller.

[0009] In one embodiment, the impeller includes a center plate, an annular plate, and a plurality of blades. The center plate and the annular plate are stacked together, and the plurality of blades are disposed between the center plate and the annular plate and spaced apart circumferentially along the annular plate. The center plate, the annular plate, and the plurality of blades form the cavity.

[0010] With this configuration, the airflow from the impeller is perpendicular to the axis of rotation, and it can output a larger air volume with a smaller space occupation, thereby increasing the air volume blown from the air outlet to the inner tank.

[0011] In one embodiment, the cross-sectional area of ​​the air inlet gradually decreases from the air outlet towards the cavity.

[0012] With this configuration, the gas inside the liner can flow and gather along the air inlet area toward one side wall of the liner, and the air inlet area can also increase the gas flow rate, thereby increasing the amount of air blown toward the liner from the air outlet by increasing the amount of air entering the air guide cavity from the air inlet.

[0013] In one embodiment, the air inlet area includes a second bottom wall and a second side wall, with the two ends of the second side wall connected to the second bottom wall and the air outlet area, respectively; the included angle β between the second side wall and the second bottom wall satisfies: 120°≤β≤130°.

[0014] With this configuration, the second sidewall can act as a converging element, and it can prevent the converging effect of the second sidewall from being poor due to an angle α that is too small; at the same time, it can prevent the volume of the air inlet area from being too large due to an angle α that affects the size of the air outlet area.

[0015] In one embodiment, the cross-sectional area of ​​the shroud gradually decreases from the air duct plate toward the side away from the air duct plate.

[0016] With this configuration, the side wall of the shroud facing the air guide cavity can guide the airflow, allowing the air blown out from the impeller to flow along the side wall of the shroud towards the air outlet, making the airflow smoother.

[0017] In one embodiment, the hood includes a first bottom wall and a first side wall, with the two ends of the first side wall connected to the first bottom wall and the air duct plate, respectively; the included angle α between the first side wall and the first bottom wall satisfies: 120°≤α≤140°.

[0018] With this configuration, the first sidewall can act as a guide for airflow and prevent the airflow from the impeller from colliding with the first sidewall and being weakened due to an angle α that is too small, thus avoiding affecting the airflow guiding effect of the first sidewall; at the same time, it prevents the overall volume of the shroud from becoming too large due to an angle α that is too large.

[0019] In one embodiment, the height dimension L1 of the air guide cavity near the end of the air duct plate and the diameter D of the impeller satisfy: L1 / D≥1.4; and / or the width dimension L2 of the air guide cavity near the end of the air duct plate and the diameter D of the impeller satisfy: L2 / D≥1.4.

[0020] This design ensures that there is enough space in the air guide cavity to direct the air blown out by the impeller to the air outlet, thereby ensuring the amount of air blown from the air outlet to the inner liner.

[0021] In one embodiment, the sum of the areas of the air inlets in the air inlet zone, S1, and the sum of the areas of the air outlets in the air outlet zone, S2, satisfy: 4≤S2 / S1≤5.

[0022] This design ensures that the total area of ​​the air outlet is large enough, thereby greatly increasing the amount of air blown from the air outlet to the cooking cavity. It also prevents the total area of ​​the air inlets from being too small, which would result in insufficient airflow into the air guide cavity and affect the amount of air blown from the air outlet to the cooking cavity. This improves the uniformity of heat distribution in the cooking cavity and enhances the cooking effect.

[0023] In one embodiment, at least a portion of the air outlets in the air outlet area are arc-shaped, and the arc-shaped outlets are arranged concentrically with the impeller.

[0024] This design allows the arc-shaped opening to better expel the air blown out by the impeller into the inner liner, thereby increasing the amount of air blown from the outlet into the inner liner.

[0025] In one embodiment, the central angle γ of the area where the air outlet is located on the air duct plate satisfies: 270°≤γ≤300°.

[0026] This design improves the uniformity of heat distribution within the inner liner. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the 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.

[0028] Figure 1 This is a three-dimensional cross-sectional schematic diagram of a baking appliance according to one embodiment of the present invention;

[0029] Figure 2 Provided by this utility model Figure 1 A schematic diagram of an explosion involving baking equipment;

[0030] Figure 3Provided by this utility model Figure 1 A cross-sectional view of a Chinese baking utensil;

[0031] Figure 4 Provided by this utility model Figure 1 A cross-sectional view of a Chinese baking utensil from another perspective;

[0032] Figure 5 Provided by this utility model Figure 1 Schematic diagram of the stroke duct plate;

[0033] Figure 6 Provided by this utility model Figure 1 A schematic diagram of the second embodiment of the stroke duct plate;

[0034] Figure 7 Provided by this utility model Figure 1 A schematic diagram of the third embodiment of the stroke duct plate;

[0035] Figure 8 Provided by this utility model Figure 1 A three-dimensional structural diagram of the intermediate impeller.

[0036] Reference numerals: 10, Inner liner; 11, Cooking cavity; 12, Air duct plate; 121, Air inlet; 122, Air outlet; 1221, Arc-shaped opening; 1222, Strip-shaped opening; 1223, Circular opening; 123, Air inlet area; 1231, Second bottom wall; 1232, Second side wall; 124, Air outlet area; 20, Fan assembly; 21, Impeller; 211, Cavity; 212, Center plate; 213, Annular plate; 214, Blade; 22, Motor; 30, Fan cover; 31, First bottom wall; 32, First side wall; 33, Air guide cavity; 40, Housing; 50, Heating element. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0042] Baking appliances such as electric ovens typically include an inner cavity with a circulating fan to ensure even heat distribution. However, existing circulating fan systems often have low airflow, resulting in uneven heat distribution within the cavity. This can cause some parts of the food to overheat and become dry and burnt, while other parts remain uncooked, affecting the cooking results.

[0043] To solve the above problems, such as Figures 1 to 7 As shown, this utility model provides a baking appliance to achieve a large air volume output and improve the cooking effect.

[0044] like Figures 1 to 3As shown, specifically, the baking appliance includes an inner liner 10, a fan hood 30, and a fan assembly 20, wherein: the inner liner 10 has a cooking cavity 11, and the inner liner 10 includes a duct plate 12, which has an air inlet area 123 and an air outlet area 124 communicating with the cooking cavity 11, and the air outlet area 124 is located on the outer periphery of the air inlet area 123; the fan hood 30 is located on the side of the duct plate 12 away from the cooking cavity 11, and together with the duct plate 12, forms a guide cavity 33, and both the air inlet area 123 and the air outlet area 124 are communicating with the guide cavity 33; the fan assembly 20 includes an impeller 21 located in the guide cavity 33 and a motor 22 located outside the guide cavity 33 and driving the impeller 21 to rotate; the air inlet area 123 is recessed into the guide cavity 33 along the axial direction of the impeller 21, and at least partially extends into the impeller 21.

[0045] The air intake zone 123 is provided with multiple air inlets 121 to connect the cooking cavity 11 and the air guide cavity 33; the air outlet zone 124 is provided with multiple air outlets 122 to connect the cooking cavity 11 and the air guide cavity 33.

[0046] In the baking appliance provided in this embodiment of the present invention, when the motor 22 drives the impeller 21 to rotate, the impeller 21 can drive the gas in the cooking chamber 11 to enter the air guide chamber 33 through the air inlet 121 of the air inlet area 123. Since the air inlet area 123 is recessed towards the air guide chamber 33 and at least partially extends into the impeller 21, the gas entering the air guide chamber 33 can flow towards the air inlet end of the impeller 21. The impeller 21 then blows the gas towards the air outlet area 124 located on the outer periphery of the air inlet area 123, so that the gas in the air guide chamber 33 can be blown out into the cooking chamber 11 through the air outlet 122 of the air outlet area 124, so as to realize the heat circulation in the cooking chamber 11, so that the heat distribution in the cooking chamber 11 is uniform and the cooking effect is improved.

[0047] like Figure 1 As shown, since the inner liner 10 is usually equipped with other components such as controllers and water tanks at the rear or side, the air duct plate 12 can be the side wall or rear wall of the inner liner 10. This ensures that the air blown out from the air outlet 122 can make the heat distribution in the cooking cavity 11 even, while also making use of the original space inside the baking appliance and avoiding increasing the overall volume of the baking appliance.

[0048] like Figure 2As shown, the impeller 21 has a cavity 211 at its center with an opening facing the air duct plate 12, and at least part of the air inlet area 123 extends into the cavity 211. Specifically, the blades of the impeller 21 are arranged in a ring structure at intervals along the circumference of the impeller 21 to form the cavity 211 at the center of the impeller 21. Gas entering the air guide cavity 33 can enter the cavity 211, and the gas in the cavity 211 is thrown to the outer periphery of the impeller 21 under the action of centrifugal force, so that the gas blown out by the impeller 21 can flow towards the air outlet area 124 located on the outer periphery of the air inlet area 123. Furthermore, the cavity 211 can also prevent the air inlet area 123 from interfering with the impeller 21, ensuring the normal rotation of the impeller 21.

[0049] like Figure 8 As shown, in one embodiment, the impeller 21 is a turbine. Specifically, the impeller 21 includes a central plate 212, an annular plate 213, and multiple blades 214. The central plate 212 and the annular plate 213 are stacked, and the multiple blades 214 are disposed between the central plate 212 and the annular plate 213 and are spaced apart along the circumference of the annular plate 213. The central plate 212, the annular plate 213, and the multiple blades 214 form a cavity 211. The center of the annular plate 213 is the air inlet of the impeller 21, which is also the opening of the cavity 211. The gap between the blades 214 is the air outlet of the impeller 21. The air blown out by the impeller 21 flows perpendicular to the axis of rotation and can output a larger air volume with a smaller space occupation, thereby further increasing the air volume blown from the air outlet 122 to the cooking cavity 11 by the impeller 21. Of course, in other embodiments, the impeller 21 can also be an axial flow impeller or other types of impellers, as long as it can realize the gas circulation between the cooking chamber 11 and the air guide chamber 33. This utility model embodiment does not make specific limitations here.

[0050] like Figures 3 to 4 As shown, the fan assembly 20 also includes a motor 22, which can be fixed to the outer wall of the shroud 30 by fasteners such as screws. The output shaft of the motor 22 passes through the shroud 30 and is fixedly connected to the center plate 212 of the impeller 21 so as to drive the impeller 21 to rotate relative to the shroud 30.

[0051] like Figures 3 to 4 As shown, the cross-sectional area of ​​the air inlet zone 123 gradually decreases from the air outlet zone 124 toward the cavity 211. The gas in the cooking cavity 11 can flow and gather along the side wall of the air inlet zone 123 toward the cooking cavity 11, and enter the air guide cavity 33 through the air inlet 121. The air inlet zone 123 can also increase the gas flow rate, thereby increasing the amount of air entering the air guide cavity 33 from the air inlet 121, which in turn increases the amount of air blown toward the cooking cavity 11 from the air outlet 122, making the heat distribution in the cooking cavity 11 more uniform and improving the cooking effect.

[0052] like Figures 3 to 4As shown, in one embodiment, the air inlet zone 123 includes a second bottom wall 1231 and a second side wall 1232. The two ends of the second side wall 1232 are connected to the second bottom wall 1231 and the air outlet zone 124, respectively. The cross-section of the air inlet zone 123 is approximately trapezoidal. The included angle β between the second side wall 1232 and the second bottom wall 1231 satisfies: 120°≤β≤130°. Here, β can be any angle within the range of 120° to 130°, such as 120°, 125°, or 130°. The second bottom wall 1231 is arranged corresponding to the air inlet end of the impeller 21. The projection of the second bottom wall 1231 onto the impeller 21 is located within the air inlet end of the impeller 21, thereby ensuring the air intake volume while avoiding increasing the volume of the duct plate 12. The second sidewall 1232 can act as a converging element, with an included angle β greater than or equal to 120° to prevent the included angle α from being too small, which would result in poor converging effect of the second sidewall 1232. At the same time, the included angle β is less than or equal to 130° to prevent the included angle α from being too large, which would result in an excessively large volume of the air inlet area 123 and affect the size of the air outlet area 124. Of course, in other embodiments, the cross-section of the air inlet area 123 can also be semi-circular, arc-shaped, triangular, or other shapes, as long as it can converge the gas in the cooking cavity 11. This embodiment of the present invention does not impose specific limitations here.

[0053] like Figures 2 to 4 As shown, the cross-sectional area of ​​the shroud 30 gradually decreases from the air duct plate 12 toward the side away from the air duct plate 12. In this way, the side wall of the shroud 30 facing the air guide cavity 33 can play a guiding role, and the air blown out from the impeller 21 can flow along the side wall of the shroud 30 facing the air guide cavity 33 toward the air outlet 122, making the air outlet smoother.

[0054] like Figures 3 to 4 As shown, in one embodiment, the hood 30 includes a first bottom wall 31 and a first side wall 32. The two ends of the first side wall 32 are connected to the first bottom wall 31 and the air duct plate 12, respectively. The cross-section of the hood 30 is approximately trapezoidal. The included angle α between the first side wall 32 and the first bottom wall 31 satisfies: 120°≤α≤140°. Figure 3Arrow F indicates the direction of gas flow from the impeller 21 in the air guide cavity 33 to the air outlet 122. α can be any angle within the range of 120° to 140°, such as 120°, 125°, 130°, 135°, or 140°. Furthermore, the outermost air outlet 122 is located within the projection of the first sidewall 32 onto the duct plate 12 to ensure that the airflow is not obstructed or weakened. The first bottom wall 31 is arranged correspondingly to the impeller 21, and the projection of the impeller 21 onto the fan shroud 30 is located within the first bottom wall 31. This facilitates the installation of the motor 22 and the impeller 21 while avoiding increasing the volume of the fan shroud 30. The first sidewall 32 serves as a guide for airflow. An included angle α is greater than or equal to 120° to prevent the airflow from the impeller 21 from colliding with the first sidewall 32 and being weakened due to a small included angle α, thus avoiding affecting the guiding effect of the first sidewall 32. Simultaneously, an included angle α is less than or equal to 140° to prevent the wind shield 30 from becoming too large. Of course, in other embodiments, the cross-section of the wind shield 30 can also be semi-circular, arc-shaped, triangular, or other shapes, as long as it can guide the airflow from the impeller 21. This embodiment of the present invention does not impose specific limitations here.

[0055] like Figures 3 to 4 As shown, the height dimension L1 of the air guide cavity 33 near the air duct plate 12 and the diameter D of the impeller 21 satisfy: L1 / D≥1.4; the width dimension L2 of the air guide cavity 33 near the air duct plate 12 and the diameter D of the impeller 21 satisfy: L2 / D≥1.4. Here, the height direction of the air duct plate 12 is defined as the Z-axis direction shown in the figure, and the width direction of the air duct plate 12 is defined as the X-axis direction shown in the figure. The ratios of L1 and D, and L2 and D, can be any values ​​greater than or equal to 1.4, such as 1.4, 1.5, or 2. This ensures that there is sufficient space within the air guide cavity 33 to guide the air blown out by the impeller 21 to the air outlet 122, thereby ensuring the air volume blown from the air outlet 122 to the cooking cavity 11.

[0056] like Figure 5As shown, the sum of the areas S1 of the air inlets 121 on the air inlet zone 123 and the sum of the areas S2 of the air outlets 122 on the air outlet zone 124 satisfy: 4≤S2 / S1≤5. The ratio of S2 to S1 can be any value within the range of 4 to 5, such as 4, 4.1, 4.2…4.9, 5, etc. Since the sum of the areas of the air outlets 122, S2, is greater than or equal to four times the sum of the areas of the air inlets 121, S1, the total area of ​​the air outlets 122 is large enough to greatly increase the amount of air blown from the air outlets 122 to the cooking cavity 11. Furthermore, since the sum of the areas of the air outlets 122, S2, is less than or equal to five times the sum of the areas of the air inlets 121, it can prevent the sum of the areas of the air inlets 121 from being too small, which would result in too little air entering the air guide cavity 33 and thus affect the amount of air blown from the air outlets 122 to the cooking cavity 11. This further improves the uniformity of heat distribution in the cooking cavity 11 and enhances the cooking effect.

[0057] like Figure 5 As shown, in one embodiment, the air outlet 122 is a strip-shaped outlet 1222 extending along the X-axis direction, and the air outlet area 124 is provided with multiple rows of strip-shaped outlets 1222 spaced apart along the Z-axis direction, each row of strip-shaped outlets 1222 including at least one strip-shaped outlet 1222. Alternatively, the strip-shaped outlets 1222 may also extend along the Z-axis direction, or extend along a direction that forms an angle with the X-axis and the Z-axis.

[0058] like Figure 6 As shown, in another embodiment, at least a portion of the air outlet 122 is an arc-shaped outlet 1221, which is concentrically arranged with the impeller 21. Since the impeller 21 is circular, the arc-shaped outlet 1221, concentric with the impeller 21, can better discharge the air blown by the impeller 21 into the cooking chamber 11, thereby increasing the air volume blown from the air outlet 122 into the cooking chamber 11. When a portion of the air outlet 122 is an arc-shaped outlet 1221, the remaining portion of the air outlet 122 can be a strip-shaped outlet 1222 or a circular outlet 1223. The strip-shaped outlet 1222 can extend along the X-axis and Z-axis directions, or it can extend along a direction that forms an angle with the X-axis and Z-axis. The circular outlet 1223 is smaller in size and has a flexible opening position, thereby increasing the total area of ​​the air outlet 122 and further increasing the air volume blown from the air outlet 122 into the cooking chamber 11. Of course, in other embodiments, the air outlet 122 may also be in other regular or irregular shapes, as long as the air outlet effect can be guaranteed. This utility model embodiment does not impose specific limitations here.

[0059] Furthermore, the air inlet 121 can also be formed in other regular or irregular shapes such as strip, arc, or circle, as long as the air intake effect can be guaranteed. This embodiment of the utility model does not impose specific limitations here.

[0060] like Figure 5As shown, in one embodiment, the central angle γ of the area on the air duct plate 12 where the air outlet 122 is provided is 360°, that is, the entire air outlet area 124 is provided with air outlet 122.

[0061] like Figures 6 to 7 As shown, in another embodiment, the central angle γ of the area where the air outlet 122 is located on the duct plate 12 satisfies: 270°≤γ≤300°. Here, γ can be any angle within the range of 270° to 300°, such as 270°, 280°, 290°, or 300°. Taking the duct plate 12 as the right side wall of the inner liner 10, and the central angle γ of the area where the air outlet 122 is located on the duct plate 12 being 270° as an example, the projection of the rotation axis of the impeller 21 onto the duct plate 12 is defined as the center, and the -Z axis direction is the 0° reference line. The air outlet 122 is located in the area between 0° and 270° on the air outlet area 124, while no air outlet 122 is located in the area between 270° and 360° on the air outlet area 124. This further improves the uniformity of heat distribution within the inner liner 10. Similarly, when the air duct plate 12 is the right side wall of the inner liner 10, and the central angle γ of the area where the air outlet 122 is located on the air duct plate 12 is 300°, the air outlet 122 is located in the area between 0° and 300° on the air outlet area 124; when the air duct plate 12 is the left side wall of the inner liner 10, and the central angle γ of the area where the air outlet 122 is located on the air duct plate 12 is 270°, the air outlet 122 is located in the area between 90° and 360° on the air outlet area 124; when the air duct plate 12 is the left side wall of the inner liner 10, and the central angle γ of the area where the air outlet 122 is located on the air duct plate 12 is 300°, the air outlet 122 is located in the area between 60° and 360° on the air outlet area 124.

[0062] like Figure 1 As shown, the baking appliance also includes a housing 40 and a heating element 50. The inner cavity 10, the fan hood 30, and the fan assembly 20 are all located inside the housing 40. The heating element 50 is located in the cooking cavity 11 near the top and bottom walls of the inner cavity 10 and is used to heat the food inside the cooking cavity 11. The baking appliance can be an electric oven, a steam oven, or other equipment with baking or air frying functions.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A baking appliance, characterized in that, include: The inner liner (10) has a cooking cavity (11). The inner liner (10) includes an air duct plate (12). The air duct plate (12) is provided with an air inlet area (123) and an air outlet area (124) that communicate with the cooking cavity (11). The air outlet area (124) is located on the outer periphery of the air inlet area (123). A fan hood (30) is disposed on the side of the air duct plate (12) away from the cooking cavity (11), and together with the air duct plate (12) forms an air guide cavity (33). The air inlet area (123) and the air outlet area (124) are both connected to the air guide cavity (33). The fan assembly (20) includes an impeller (21) disposed in the air guide cavity (33) and a motor (22) disposed outside the air guide cavity (33) and driving the impeller (21) to rotate; The air inlet area (123) is recessed into the air guide cavity (33) along the axial direction of the impeller (21), and at least partially extends into the impeller (21).

2. The baking appliance according to claim 1, characterized in that, The impeller (21) has a cavity (211) with an opening facing the air duct plate (12) at its center, and at least part of the air inlet area (123) extends into the cavity (211).

3. The baking apparatus according to claim 2, characterized in that, The impeller (21) includes a center plate (212), an annular plate (213) and a plurality of blades (214). The center plate (212) and the annular plate (213) are stacked together. The plurality of blades (214) are disposed between the center plate (212) and the annular plate (213) and are arranged at intervals along the circumference of the annular plate (213). The center plate (212), the annular plate (213) and the plurality of blades (214) form the cavity (211).

4. The baking apparatus according to claim 2, characterized in that, The cross-sectional area of ​​the air inlet area (123) gradually decreases from the air outlet area (124) toward the cavity (211).

5. The baking apparatus according to claim 4, characterized in that, The air inlet area (123) includes a second bottom wall (1231) and a second side wall (1232), and the two ends of the second side wall (1232) are respectively connected to the second bottom wall (1231) and the air outlet area (124); The included angle β between the second sidewall (1232) and the second bottom wall (1231) satisfies: 120°≤β≤130°.

6. The baking apparatus according to claim 1, characterized in that, The cross-sectional area of ​​the wind shield (30) gradually decreases from the air duct plate (12) toward the side away from the air duct plate (12).

7. The baking apparatus according to claim 6, characterized in that, The wind shield (30) includes a first bottom wall (31) and a first side wall (32), and the two ends of the first side wall (32) are respectively connected to the first bottom wall (31) and the air duct plate (12); The included angle α between the first sidewall (32) and the first bottom wall (31) satisfies: 120°≤α≤140°.

8. The baking apparatus according to claim 6, characterized in that, The height L1 of the air guide cavity (33) near the end of the air duct plate (12) and the diameter D of the impeller (21) satisfy: L1 / D≥1.4; and / or The width L2 of the air guide cavity (33) near the end of the air duct plate (12) and the diameter D of the impeller (21) satisfy: L2 / D≥1.

4.

9. The baking apparatus according to claim 1, characterized in that, The sum of the areas S1 of the air inlets (121) on the air inlet area (123) and the sum of the areas S2 of the air outlets (122) on the air outlet area (124) satisfy: 4≤S2 / S1≤5.

10. The baking apparatus according to claim 1, characterized in that, At least part of the air outlet (122) on the air outlet area (124) is an arc-shaped opening (1221), and the arc-shaped opening (1221) is arranged concentrically with the impeller (21).

11. The baking apparatus according to claim 1, characterized in that, The central angle γ of the area where the air outlet (122) is located on the air outlet area (124) satisfies: 270°≤γ≤300°.

Images