Air duct structure and cooking equipment

Abstract

The utility model relates to a kind of air duct structure and cooking equipment, air duct structure includes: inlet channel is located in the rear side of inner bag, including first inlet and first outlet, first outlet is located in the top of inlet channel;Steam outlet channel is located in the top of inner bag, including second inlet and second outlet, second inlet is communicated with first outlet, second outlet is located in the bottom wall of steam outlet channel;Splitting passage is located in the bottom of steam outlet channel, including third inlet and at least two third outlets, third inlet is located in the top wall of splitting passage, and it is communicated with second outlet, in the depth direction of inner bag, each third outlet is arranged with interval, the projection of third inlet on the bottom wall of splitting passage is located between any two adjacent third outlets.Third inlet and each third outlet staggered arrangement, slow down the flow rate of steam, improve heat exchange efficiency, so that the steam entering inner bag can be relatively evenly distributed in the depth direction of inner bag.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an air duct structure and cooking equipment. Background Technology

[0002] Existing cooking equipment such as steam ovens typically use a heating plate at the bottom of the inner cavity to generate steam, or supply steam directly from the lower rear side of the back panel, and utilize the natural diffusion and rising of the steam to heat the food inside the inner cavity.

[0003] However, due to the low density of high-temperature steam, it rises rapidly after generation and accumulates at the top of the inner pot, shortening its residence time within the effective heating area and reducing heat exchange efficiency. Furthermore, the rapid rise of steam also results in poor uniformity of steam distribution in the horizontal direction within the inner pot, leading to uneven heating of the food and affecting the overall cooking effect. Utility Model Content

[0004] Therefore, it is necessary to provide an air duct structure and cooking equipment to address the above problems, so as to improve heat exchange efficiency and enhance the uniformity of steam inside the inner pot.

[0005] This utility model first provides a duct structure for a cooking device, the cooking device including an inner pot and a steam generating assembly, the duct structure including: a steam inlet channel for being disposed on the rear side of the inner pot, the steam inlet channel including a first steam inlet and a first steam outlet, the first steam inlet being for communicating with the steam generating assembly, the first steam outlet being disposed at the top of the steam inlet channel; a steam outlet channel for being disposed at the top of the inner pot, the steam outlet channel including a second steam inlet and a second steam outlet, the second steam inlet being for communicating with the first steam outlet, the second steam outlet being disposed at the bottom wall of the steam outlet channel; and a diversion channel disposed at the bottom of the steam outlet channel, the diversion channel including a third steam inlet and at least two third steam outlets, the third steam inlet being disposed at the top wall of the diversion channel and communicating with the second steam outlet, the third steam outlets being arranged at intervals in the depth direction of the inner pot, the projection of the third steam inlet on the bottom wall of the diversion channel being located between any two adjacent third steam outlets.

[0006] In the aforementioned air duct structure, since the projection of the third steam inlet 71 on the bottom wall of the diversion channel 7 is located between any two adjacent third steam outlets 72, the third steam inlet 71 and each third steam outlet 72 are arranged alternately. This forces the steam to slowly diffuse from the top downwards to each third steam outlet 72 and fill the inner liner 8 by downward pressure. This slows down the steam flow rate, increases the contact time between the steam and the food and the residence time in the inner liner 8, improves heat exchange efficiency, and avoids the high-speed steam flow directly impacting the surface of the food. This achieves a good oxygen removal effect and improves nutrient retention. At the same time, each second steam outlet 22 is arranged at intervals along the depth direction of the inner liner 8, so that the steam entering the inner liner 8 can be relatively evenly distributed in the depth direction of the inner liner 8, ensuring that the food is heated evenly and improving the cooking effect.

[0007] In one embodiment, a diversion element is also provided on the bottom wall of the diversion channel. The diversion element is located at the bottom of the third steam inlet and can divert the steam entering the diversion channel from the third steam inlet to both sides along the depth direction of the inner liner.

[0008] With this configuration, the steam entering from the third steam inlet 71 is actively diverted and guided within the diversion channel 7 by the diversion component 73, so that it is evenly distributed to both sides along the depth direction of the inner liner 8. At the same time, the diversion component 73 can also buffer and guide the concentrated steam, making the steam flow more stable and orderly.

[0009] In one embodiment, in the depth direction of the inner liner, both sides of the flow divider are provided with guide surfaces; and / or, the flow divider includes a flow divider end facing the third steam inlet, and in the depth direction of the inner liner, the flow divider end is located at the center of the third steam inlet.

[0010] With this configuration, the guide surface 732 can provide a smooth transition path for the steam, guiding the steam to flow smoothly to both sides, improving flow efficiency, and helping to maintain the kinetic energy of the steam; the split end ensures that the steam entering from the third steam inlet 71 is evenly split to both sides, and the two third steam outlets 72 can maintain approximately equal air volume and air velocity.

[0011] In one embodiment, the steam generating assembly includes a heating plate disposed at the bottom of the inner liner; the first steam inlet is disposed at the bottom of the steam inlet channel and faces the heating plate.

[0012] With this configuration, some of the steam generated by the heating plate enters the steam inlet channel through the first steam inlet and rises rapidly to the steam outlet channel. The remainder can directly heat the bottom of the food inside the inner pot, thereby improving the evenness of heating and enhancing heating efficiency and cooking results.

[0013] In one embodiment, in the width direction of the inner liner, the size L1 of the first steam inlet is greater than the size L2 of the heating plate; and / or, the area S1 of the first steam inlet and the area S2 of the heating plate satisfy: S2≤S1≤2S2.

[0014] This configuration ensures that most of the steam generated by the heating plate can enter the steam inlet channel through the first steam inlet, thereby improving the steam collection efficiency; it also ensures that the steam can enter the steam inlet channel smoothly and efficiently, thus improving the steam utilization rate.

[0015] In one embodiment, the cross-sectional area S3 of the third steam inlet and the sum of the cross-sectional areas S4 of each of the third steam outlets satisfy: S3≤S4.

[0016] This design effectively reduces the steam velocity at the third steam outlet, preventing high-speed steam from directly impacting the food surface; it also extends the contact time between the steam and the food, as well as the residence time within the inner pot, thus improving heat energy utilization efficiency.

[0017] In one embodiment, the duct structure further includes a driving component, which is disposed at the connection between the steam inlet channel and the steam outlet channel, and is used to drive steam to flow from the steam inlet channel to the steam outlet channel.

[0018] With this configuration, the drive unit can quickly draw some of the steam generated by the heating plate into the steam inlet channel and stably deliver it to the steam outlet channel, thereby improving the efficiency and reliability of steam flow and distribution within the air duct structure and inner liner.

[0019] In one embodiment, the air duct structure further includes a first guide channel disposed within the steam inlet channel and communicating with the drive member, wherein the dimension of the first guide channel gradually decreases in the width direction of the inner liner from the first steam inlet to the drive member; and / or, the air duct structure further includes a second guide channel disposed within the steam outlet channel and communicating with the drive member, wherein the dimension of the second guide channel gradually increases in the width direction of the inner liner from the drive member to the second steam outlet.

[0020] With this configuration, the first guide channel can guide and accelerate the steam flowing into the steam inlet channel from the first steam inlet, so that it flows smoothly and centrally to the steam inlet of the drive component; the second guide channel can guide and diffuse the steam flowing into the steam outlet channel from the steam outlet of the drive component, so that it evenly fills the entire steam outlet channel and the diversion channel in the width direction of the inner liner.

[0021] In one embodiment, the top wall of the diversion channel and the top wall of the inner liner together form the steam outlet channel, and the second steam outlet coincides with the third steam inlet; the air duct structure also includes a baffle, which is disposed on the rear side of the inner liner and together with the rear wall of the inner liner forms the steam inlet channel.

[0022] This design simplifies the overall structure of the air duct, reduces the number of parts, and lowers the complexity and cost of production and processing. It also facilitates the miniaturization and compactness of the air duct structure, avoiding the occupation of too much space inside the liner.

[0023] This utility model also provides a cooking device, including an inner pot, a steam generating component, and an air duct structure as described above. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a three-dimensional structural diagram of a cooking device according to one embodiment of the present invention.

[0026] Figure 2 Provided by this utility model Figure 1 A three-dimensional structural diagram of the stroke duct;

[0027] Figure 3 Provided by this utility model Figure 2 Cross-sectional view of the stroke duct structure.

[0028] Reference numerals: 1. Steam inlet channel; 11. First steam inlet; 12. First steam outlet; 2. Steam outlet channel; 21. Second steam inlet; 22. Second steam outlet; 3. Driving component; 4. First guide channel; 41. First guide component; 5. Second guide channel; 51. Second guide component; 52. Third guide component; 6. Baffle; 7. Diverting channel; 71. Third steam inlet; 72. Third steam outlet; 73. Diverting component; 731. Diverting end; 732. Guide curved surface; 8. Inner liner; 9. Steam generating assembly; 91. Heating plate. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Existing steam ovens and other cooking appliances typically use a heating plate at the bottom of the inner cavity to generate steam, or supply steam directly from the lower rear side of the back panel, utilizing the natural diffusion and rising of the steam to heat the food inside. However, because high-temperature steam has a low density, it rises rapidly after generation and accumulates at the top of the inner cavity, shortening its residence time within the effective heating area and reducing heat exchange efficiency. Furthermore, the rapid rise of steam also leads to poor uniformity of steam distribution in the horizontal direction within the inner cavity, resulting in uneven heating of the food and affecting the overall cooking effect.

[0035] To solve the above problems, such as Figures 1 to 3 As shown, this utility model provides a duct structure to improve heat exchange efficiency and enhance the uniformity of steam inside the inner liner.

[0036] like Figures 1 to 3 As shown, the air duct structure is used in the cooking equipment, which includes an inner pot 8 and a steam generating assembly 9. The depth direction of the inner pot 8 is defined as the X direction, the width direction as the Y direction, and the height direction as the Z direction.

[0037] like Figures 1 to 2 As shown, specifically, the air duct structure includes a steam inlet channel 1, a steam outlet channel 2, and a diversion channel 7. Specifically, the steam inlet channel 1 is located at the rear of the inner liner 8 and includes a first steam inlet 11 and a first steam outlet 12. The first steam inlet 11 is connected to the steam generating assembly 9, and the first steam outlet 12 is located at the top of the steam inlet channel 1. The steam outlet channel 2 is located at the top of the inner liner 8 and includes a second steam inlet 21 and a second steam outlet 22. The second steam inlet 21 connects to the first steam outlet 9. Steam inlet 12 is connected, and second steam outlet 22 is located on the bottom wall of steam outlet channel 2; diversion channel 7 is located at the bottom of steam outlet channel 2. Diversion channel 7 includes third steam inlet 71 and at least two third steam outlets 72. Third steam inlet 71 is located on the top wall of diversion channel 7 and is connected to second steam outlet 22. In the depth direction of inner liner 8, each third steam outlet 72 is arranged at intervals. The projection of third steam inlet 71 on the bottom wall of diversion channel 7 is located between any two adjacent third steam outlets 72.

[0038] In the air duct structure provided in this embodiment of the utility model, the steam generated by the steam generating component 9 sequentially enters the inner liner 8 through the first steam inlet 11, the first steam outlet 12, the second steam inlet 21, the second steam outlet 22, the third steam inlet 71, and each of the third steam outlets 72 to heat the food inside the inner liner 8. Since the projection of the third steam inlet 71 on the bottom wall of the diversion channel 7 is located between any two adjacent third steam outlets 72, the third steam inlet 71 and each of the third steam outlets 72 are arranged alternately, forcing the steam to slowly diffuse from the top downwards to each of the outlets. The third steam outlet 72 fills the inner pot 8 by pressing down, which slows down the steam flow rate, increases the contact time between the steam and the food and the residence time in the inner pot 8, improves heat exchange efficiency, and avoids the high-speed steam flow from directly impacting the surface of the food, thus achieving a good oxygen removal effect and improving nutrient retention. At the same time, the second steam outlets 22 are arranged at intervals along the depth direction of the inner pot 8, so that the steam entering the inner pot 8 can be relatively evenly distributed in the depth direction of the inner pot 8, ensuring that the food is heated evenly and improving the cooking effect.

[0039] For ease of description, the following example illustrates the flow distribution channel 7, which includes two third steam outlets 72, with the projection of the third steam inlet 71 onto the bottom wall of the flow distribution channel 7 located between the two third steam outlets 72. Preferably, in the depth direction of the inner liner 8, the third steam inlet 71 is located at the center of the inner liner 8, and the distances between the two third steam outlets 72 and the third steam inlet 71 are equal. Of course, in other embodiments, the flow distribution channel 7 may also include three, four, five, or more third steam outlets 72, which can be adjusted according to factors such as the size of the inner liner 8. This embodiment of the present invention does not impose specific limitations here.

[0040] In the illustrated embodiment, both the third steam inlet 71 and the third steam outlet 72 are strip-shaped and extend along the width of the inner liner 8, allowing the steam entering the inner liner 8 to be relatively evenly distributed along its width, further ensuring uniform heating of the food. Of course, in other embodiments, the third steam inlet 71 and the third steam outlet 72 may also be wavy, arc-shaped, or other regular or irregular shapes; or, each third steam inlet 71 and the third steam outlet 72 may be formed by multiple through holes spaced apart along the width of the inner liner 8.

[0041] like Figures 2 to 3As shown, a diverter 73 is also provided on the bottom wall of the diversion channel 7. The diverter 73 is located at the bottom of the third steam inlet 71 and can divert the steam entering the diversion channel 7 from the third steam inlet 71 to both sides along the depth direction of the inner liner 8. In this way, the diverter 73 actively diverts and guides the steam entering from the third steam inlet 71 within the diversion channel 7, distributing it evenly to both sides along the depth direction of the inner liner 8, thereby further improving the uniformity of steam distribution in the depth direction of the inner liner 8 when it exits from the third steam outlet 72. At the same time, the diverter 73 can also buffer and guide concentrated steam, avoiding turbulence and energy loss caused by high-speed steam flow directly impacting the bottom wall of the diversion channel 7, making the steam flow more stable and orderly.

[0042] The diversion component 73 can be integrally formed on the bottom wall of the diversion channel 7, or it can be fixedly connected to the bottom wall of the diversion channel 7 by means of screws, adhesives, etc., as long as the stability and reliability of the connection between the two can be ensured. This embodiment of the utility model does not impose specific limitations here.

[0043] like Figure 3 As shown in the illustrated embodiment, the diverter 73 includes a diverter end 731 facing the third steam inlet 71, located at the center of the third steam inlet 71 in the depth direction of the inner liner 8. This further ensures that the steam entering from the third steam inlet 71 is evenly diverted to both sides, and that the two third steam outlets 72 maintain approximately equal airflow volume and velocity, thereby achieving a uniform distribution of steam in the depth direction of the inner liner 8. Of course, in other embodiments, the diverter end 731 can also be positioned according to actual needs, either near or away from the center of the third steam inlet 71, towards the side of the second steam inlet 21.

[0044] like Figure 3 As shown in the illustrated embodiment, guide surfaces 732 are provided on both sides of the flow divider 73 in the depth direction of the inner liner 8. Specifically, from the flow divider end 731 to the bottom wall of the flow divider channel 7, the guide surfaces 732 gradually extend towards the third steam outlet 72. In this way, the guide surfaces 732 can provide a smooth transition path for the steam, guiding the steam to flow smoothly to both sides, effectively reducing eddies and resistance caused by abrupt changes in flow direction, improving flow efficiency, and helping to maintain the kinetic energy of the steam so that it can reach a farther position inside the inner liner 8. Of course, in other embodiments, guide slopes can also be provided on both sides of the flow divider 73, or the flow divider 73 can also be configured as a flow divider plate perpendicular to the bottom wall of the flow divider channel 7.

[0045] like Figures 1 to 2As shown in the illustrated embodiment, the steam generating assembly 9 includes a heating plate 91, which is disposed at the bottom of the inner pot 8. A first steam inlet 11 is located at the bottom of the steam inlet channel 1 and faces the heating plate 91. The heating plate 91 heats the water within it and generates steam. Part of the steam enters the steam inlet channel 1 through the first steam inlet 11 and rises rapidly to the steam outlet channel 2. The remaining steam directly heats the bottom of the food inside the inner pot 8, thereby improving the uniformity of heating and enhancing heating efficiency and cooking effect. This duct structure also makes it suitable for existing cooking equipment that uses the heating plate 91 to generate steam, reducing costs. Of course, in other embodiments, the steam generating assembly 9 can also be located on the outside of the inner pot 8 as needed, and the generated steam can be directly introduced into the steam inlet channel 1 through the first steam inlet 11.

[0046] like Figure 1 As shown in the illustrated embodiment, in the width direction of the inner liner 8, the size L1 of the first steam inlet 11 is larger than the size L2 of the heating plate 91. This ensures that most of the steam generated by the heating plate 91 can enter the steam inlet channel 1 through the first steam inlet 11, thereby improving steam collection efficiency. Of course, in other embodiments, in the width direction of the inner liner 8, the size L1 of the first steam inlet 11 can be set to be less than or equal to the size L2 of the heating plate 91, depending on actual needs.

[0047] like Figure 1 As shown in the illustrated embodiment, the area S1 of the first steam inlet 11 and the area S2 of the heating plate 91 satisfy: S2≤S1≤2S2. This ensures that steam can enter the steam inlet channel 1 smoothly and efficiently, improving steam utilization. Specifically, S1≥S2 ensures that most of the steam generated by the heating plate 91 can enter the steam inlet channel 1 through the first steam inlet 11, while avoiding excessively high steam velocity and resistance at the first steam inlet 11, thus preventing noise. S1≤2S2 prevents the first steam inlet 11 from being too large, causing air pressure dispersion and weakening the steam suction capacity. Of course, in other embodiments, S1<S2 or S1>2S2 can be set according to actual needs.

[0048] like Figures 2 to 3As shown in the illustrated embodiment, the cross-sectional area S3 of the third steam inlet 71 and the sum of the cross-sectional areas S4 of each third steam outlet 72 satisfy: S3 ≤ S4. This effectively reduces the steam velocity at the third steam outlet 72, preventing high-speed steam from directly impacting the food surface, thus preventing localized overheating, deformation, or nutrient loss and improving cooking results. It also avoids steam backflow, pressure increases, and airflow disturbances caused by insufficient area of ​​the third steam outlet 72, ensuring stable, smooth, and even steam discharge. Simultaneously, it further extends the contact time between the steam and the food, as well as the residence time within the inner pot 8, allowing for more sufficient heat exchange between the steam and the food, improving heat energy utilization efficiency. Of course, in other embodiments, S3 > S4 can be set according to actual needs.

[0049] like Figures 2 to 3 As shown, the air duct structure also includes a driving component 3, which is located at the connection between the steam inlet channel 1 and the steam outlet channel 2, and is used to drive steam from the steam inlet channel 1 to the steam outlet channel 2. The driving component 3 can be a fan, air pump, etc., as long as it can drive fluid from the steam inlet channel 1 to the steam outlet channel 2; this embodiment of the invention does not impose specific limitations. In this way, the driving component 3 can quickly draw some of the steam generated by the heating plate 91 into the steam inlet channel 1 and stably deliver it to the steam outlet channel 2, thereby further improving the efficiency and reliability of steam flow and distribution within the air duct structure and the inner liner 8, ensuring that a uniform and stable steam environment can be quickly established within the inner liner 8, thus improving cooking efficiency and cooking effect.

[0050] like Figures 2 to 3 As shown, the air duct structure also includes a first guide channel 4 disposed within the steam inlet channel 1 and connected to the drive member 3. From the first steam inlet 11 to the drive member 3, the dimension of the first guide channel 4 gradually decreases in the width direction of the inner liner 8. The air duct structure also includes a second guide channel 5 disposed within the steam outlet channel 2 and connected to the drive member 3. From the drive member 3 to the second steam outlet 22, the dimension of the second guide channel 5 gradually increases in the width direction of the inner liner 8. The first guide channel 4 is a tapering channel, which can guide and accelerate the steam flowing into the steam inlet channel 1 from the first steam inlet 11, so that it flows smoothly and centrally to the steam inlet of the drive component 3; the second guide channel 5 is a expanding channel, which can guide and diffuse the steam flowing into the steam outlet channel 2 from the steam outlet of the drive component 3, so that it evenly fills the entire steam outlet channel 2 in the width direction of the inner liner 8, so that the steam discharged from the second steam outlet 22 and the third steam inlet 71 can also evenly fill the entire diversion channel 7 in the width direction of the inner liner 8, and can be evenly discharged into the inner liner 8 through each third steam outlet 72.

[0051] In the illustrated embodiment, the first guide channel 4 is formed by two first guide members 41 and the inner wall of the steam inlet channel 1. The two first guide members 41 are respectively located on both sides of the drive member 3, and from the first steam inlet 11 to the drive member 3, the first guide members 41 are inclined towards the center of the inner liner 8 in the width direction. The second guide channel 5 is formed by a third guide member 52, two second guide members 51, and the inner wall of the steam inlet channel 1. The two second guide members 51 are respectively located on both sides of the drive member 3, and from the drive member 3 to the second steam outlet 22, the second guide members 51 are inclined towards the edge of the inner liner 8 in the width direction. The two ends of the third guide member 52 are respectively connected to the ends of the two second guide members 51 away from the drive member 3, and are located on the side of the second steam outlet 22 away from the drive member 3. The third guide member 52 can prevent steam from diffusing in the steam outlet channel 2, thus affecting the efficiency of steam entering the diversion channel 7 through the second steam outlet 22 and the third steam inlet 71. Of course, in other embodiments, the first guide channel 4 can also be formed as a complete tubular structure, with both ends of the tubular structure connected to the first steam inlet 11 and the steam inlet of the drive member 3 respectively; the second guide channel 5 can also be formed as a complete tubular structure, with one end of the tubular structure connected to the steam outlet of the drive member 3 and the second steam outlet 22.

[0052] like Figures 1 to 3 As shown, the top wall of the diversion channel 7 and the top wall of the inner liner 8 together form the steam outlet channel 2, and the second steam outlet 22 coincides with the third steam inlet 71. The duct structure also includes a baffle 6, which is located on the rear side of the inner liner 8 and together with the rear wall of the inner liner 8 forms the steam inlet channel 1. Specifically, the top wall of the diversion channel 7 is provided with a third steam inlet 71, which also serves as the second steam outlet 22. The top of the baffle 6 is sealed to the diversion channel 7 to prevent steam from entering the inner liner 8 through the gap between the baffle 6 and the diversion channel 7. In this way, the overall structure of the duct is simple, with fewer parts, reducing the complexity and cost of production and processing; it also facilitates the miniaturization and compaction of the duct structure, avoiding the occupation of too much space in the inner liner 8. Of course, in other embodiments, the steam inlet channel 1 can also be formed as a complete tubular structure, with the two ends of the tubular structure being the first steam inlet 11 and the first steam outlet 12, respectively; the steam outlet channel 2 can also be formed as a complete tubular structure, with one end of the tubular structure connected to the first steam outlet 12 and the other end being a closed end, and the bottom wall of the tubular structure being provided with a second steam outlet 22 connected to the third steam inlet 71.

[0053] like Figure 1 As shown, this embodiment of the present invention also provides a cooking device, including an inner liner 8, a steam generating component 9, and the aforementioned air duct structure. This cooking device can be a steam oven, a steam oven, a steam-bake-microwave combination appliance, or other equipment with steaming functions; this embodiment of the present invention does not impose specific limitations on these devices.

[0054] The cooking equipment can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the air duct structure to perform corresponding operations, thereby realizing intelligent control of the air duct structure and improving the user experience.

[0055] 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.

[0056] 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 duct structure for a cooking device, the cooking device comprising an inner pot (8) and a steam generating assembly (9), characterized in that, The air duct structure includes: A steam inlet channel (1) is provided on the rear side of the inner liner (8). The steam inlet channel (1) includes a first steam inlet (11) and a first steam outlet (12). The first steam inlet (11) is used to communicate with the steam generating assembly (9), and the first steam outlet (12) is provided on the top of the steam inlet channel (1). A steam outlet channel (2) is provided at the top of the inner liner (8). The steam outlet channel (2) includes a second steam inlet (21) and a second steam outlet (22). The second steam inlet (21) communicates with the first steam outlet (12), and the second steam outlet (22) is provided on the bottom wall of the steam outlet channel (2). The diversion channel (7) is located at the bottom of the steam outlet channel (2). The diversion channel (7) includes a third steam inlet (71) and at least two third steam outlets (72). The third steam inlet (71) is located on the top wall of the diversion channel (7) and communicates with the second steam outlet (22). In the depth direction of the inner liner (8), each of the third steam outlets (72) is arranged at intervals. The projection of the third steam inlet (71) on the bottom wall of the diversion channel (7) is located between any two adjacent third steam outlets (72).

2. The air duct structure according to claim 1, characterized in that, The bottom wall of the diversion channel (7) is also provided with a diversion component (73), which is located at the bottom of the third steam inlet (71) and can divert the steam entering the diversion channel (7) from the third steam inlet (71) to both sides along the depth direction of the inner liner (8).

3. The air duct structure according to claim 2, characterized in that, In the depth direction of the inner liner (8), both sides of the diverter (73) are provided with guide surfaces (732); and / or, The diverter (73) includes a diverter end (731) facing the third steam inlet (71), and the diverter end (731) is located at the center of the third steam inlet (71) in the depth direction of the inner liner (8).

4. The air duct structure according to claim 1, characterized in that, The steam generating assembly (9) includes a heating plate (91) located at the bottom of the inner liner (8); the first steam inlet (11) is located at the bottom of the steam inlet channel (1) and faces the heating plate (91).

5. The air duct structure according to claim 4, characterized in that, In the width direction of the inner liner (8), the dimension L1 of the first steam inlet (11) is larger than the dimension L2 of the heating plate (91); and / or, The area S1 of the first steam inlet (11) and the area S2 of the heating plate (91) satisfy: S2≤S1≤2S2.

6. The air duct structure according to claim 1, characterized in that, The cross-sectional area S3 of the third steam inlet (71) and the sum of the cross-sectional areas S4 of each of the third steam outlets (72) satisfy: S3≤S4.

7. The air duct structure according to claim 1, characterized in that, The air duct structure also includes a driving component (3), which is located at the connection between the steam inlet channel (1) and the steam outlet channel (2) and is used to drive steam from the steam inlet channel (1) to the steam outlet channel (2).

8. The air duct structure according to claim 7, characterized in that, The air duct structure further includes a first guide channel (4) disposed within the steam inlet channel (1) and connected to the drive member (3). From the first steam inlet (11) to the drive member (3), the dimension of the first guide channel (4) gradually decreases in the width direction of the inner liner (8); and / or, The air duct structure also includes a second guide channel (5) located in the steam outlet channel (2) and connected to the drive member (3). From the drive member (3) to the second steam outlet (22), the size of the second guide channel (5) gradually increases in the width direction of the inner liner (8).

9. The air duct structure according to any one of claims 1-8, characterized in that, The top wall of the diversion channel (7) and the top wall of the inner liner (8) together form the steam outlet channel (2), and the second steam outlet (22) coincides with the third steam inlet (71); The air duct structure also includes a baffle (6), which is disposed on the rear side of the inner liner (8) and together with the rear wall of the inner liner (8) forms the steam inlet channel (1).

10. A cooking device, characterized in that, It includes an inner liner (8), a steam generating assembly (9), and a duct structure as described in any one of claims 1-9.

Images