A cooking inner pot structure, cooking device, and integrated cooking machine

Abstract

This invention relates to a cooking inner pot structure, cooking device, and integrated cooking machine, comprising an inner pot. A hot air baffle is fitted onto the inner surface of the first side wall of the inner pot, forming a hot air chamber. The fan blades of a hot air blower are located within the hot air chamber and directly opposite the air inlet of the hot air baffle. The air outlet of the hot air baffle is located beside the air inlet. A blower is formed on the first side wall of the inner pot within the hot air chamber. One side of the fan blade is a first blade, and the other side is a second blade. A first air outlet is also formed on the inner pot, through which a first airflow flows. The blower is connected to both the first air outlet and the outside air via a blower air path, which includes a control valve for adjusting the ratio of the first airflow to the outside air in the blower airflow entering the inner pot. This invention enables dehumidification of the inner pot through blower air, allows adjustment of the dehumidification speed, and ensures uniformity of the temperature field inside the inner pot while blowing air.

Description

Technical Field

[0001] This invention relates to the field of cooking appliances, and more particularly to a cooking inner pot structure, cooking appliance, and integrated cooking machine. Background Technology

[0002] Ovens, steam ovens, and other cooking appliances with baking functions have a hot air fan installed at the back of their inner cavity. A hot air baffle is located on the rear side of the inner cavity, forming a hot air chamber with the back panel of the inner cavity. The fan blades are located within this hot air chamber, and heating elements are arranged around the fan blades. During operation, the air in the inner cavity is drawn into the hot air chamber through the air inlet on the hot air baffle by the fan blades. After being heated in the hot air chamber, the air flows back into the inner cavity under the centrifugal force of the fan blades, creating a hot air circulation within the inner cavity and heating the food inside. However, existing baking appliances typically only have one exhaust vent on the inner cavity. When the air pressure at the exhaust vent is higher than the external atmospheric pressure, excess air in the inner cavity is expelled through the vent. However, when baking foods with high moisture content (such as cakes and egg tarts), the humidity inside the inner cavity is high, and the above exhaust method cannot effectively remove the moisture, thus affecting the cooking results.

[0003] Therefore, existing technologies generally use forced draft to expel excess steam from the inner liner during baking, as exemplified by the Chinese utility model patent "An Integrated Stove with Cooking Device" (patent number ZL 202122405399.X, authorization announcement number CN216307871U). However, using forced draft requires an additional blower device (such as a blower) outside the inner liner, which not only increases the production cost of the cooking device but also occupies additional installation space within the device. Furthermore, existing blower methods typically blow in cold outside air, which can affect the uniformity of the temperature field inside the inner liner. Additionally, existing blower methods can only adjust the blowing efficiency by the frequency of the blower device, and cannot adaptively adjust the blowing efficiency based on changes in the humidity within the inner liner. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a cooking inner pot structure that can achieve ventilation and dehumidification and has a simple structure, in contrast to the prior art.

[0005] The second technical problem to be solved by the present invention is to provide a cooking inner pot structure that can achieve air blowing and dehumidification with adjustable air blowing and dehumidification speed, in contrast to the prior art.

[0006] The third technical problem to be solved by the present invention is to provide a cooking inner pot structure that can achieve forced air dehumidification and has little impact on the uniformity of the temperature field inside the inner pot, in contrast to the prior art.

[0007] The fourth technical problem to be solved by the present invention is to provide a cooking device having the above-described cooking inner pot structure, in contrast to the prior art.

[0008] The fifth technical problem to be solved by the present invention is to provide a cooking appliance with the above-mentioned cooking device in contrast to the prior art.

[0009] The technical solution adopted by the present invention to solve at least one of the above-mentioned technical problems is as follows: a cooking inner pot structure, comprising an inner pot, wherein a hot air baffle is provided on the inner surface of the first side wall of the inner pot to form a hot air chamber, a fan blade of a hot air blower is located in the hot air chamber and faces the air inlet of the hot air baffle, a back heating tube is provided around the fan blade, and the air outlet of the hot air baffle is opened beside the air inlet, characterized in that...

[0010] An air inlet is provided on the first side wall of the inner liner, which is located in the hot air chamber. One side of the fan blade is a first blade that faces the air inlet of the hot air baffle, and the other side is a second blade that faces the air inlet.

[0011] The inner liner is also provided with a first air outlet located outside the hot air chamber, and the first airflow flows out through the first air outlet. The blower is connected to the first air outlet and the outside air through the blower air passage, and the blower air passage includes a control valve for adjusting the ratio of the first airflow to the outside air in the blower airflow blown into the inner liner from the blower air outlet.

[0012] Furthermore, the first air outlet is located on the first side wall and adjacent to the hot air chamber. On the one hand, this allows the first air outlet and the blower to be concentrated on one side of the inner liner, facilitating airway connection with the control valve; on the other hand, by placing the first air outlet at the point where the airflow returns from the hot air chamber to the inner liner cavity, the airflow is unstable, ensuring the flow speed of the first airflow and avoiding the impact on the stability of the air field inside the inner liner cavity caused by placing the first air outlet at a stable airflow point.

[0013] Furthermore, the first air outlet is located above the aforementioned hot air baffle, and the air outlet of the hot air baffle includes a first air outlet located at the upper end of the hot air baffle. In this way, the hot airflow blown out by the first air outlet can flow out from the first air outlet to form a first airflow.

[0014] Furthermore, the first air outlet and the first air vent are staggered. This reduces the impact on the temperature field of the upper part of the inner cavity of the liner while ensuring the flow velocity of the first airflow at the first air outlet.

[0015] Furthermore, an exhaust port is also provided on the inner liner, which is located on both sides of the inner liner, along with the first air outlet. This avoids mutual interference between the two, ensuring the exhaust effect of the inner liner and thus its dehumidification effect, while also ensuring the air output from the first air outlet, thereby allowing for adjustment of the blower's dehumidification function.

[0016] Furthermore, the control valve includes a valve body with a valve cavity, which has a first air port, a second air port, and a third air port. The first air port is connected to the outside, the second air port is fluidly connected to the first air outlet, and the third air port is fluidly connected to the blower outlet. The first and third air ports are always connected. A valve core is movably disposed in the valve cavity, which can move within the valve cavity to control the actual flow area of ​​the third and second air ports. Thus, when the actual flow area of ​​the second and third air ports is large, the proportion of the first airflow in the blower airflow is large, and the dehumidification speed of the inner liner is slow. Conversely, when the actual flow area of ​​the second and third air ports is small, the proportion of the first airflow in the blower airflow is small, and the dehumidification speed of the inner liner is fast.

[0017] Furthermore, the opening area of ​​the first air inlet is larger than that of the third air inlet, and the opening area of ​​the third air inlet is larger than that of the second air inlet. The sum of the opening areas of the second and third air inlets is less than or equal to that of the first air inlet. This ensures the efficiency of the intake of outside air, thereby ensuring the efficiency of the blower ventilation and dehumidification. In other words, adjustments are made based on ensuring a certain level of blower ventilation and dehumidification efficiency.

[0018] Furthermore, the valve body includes an elongated shell, the inner cavity of which forms the valve cavity. The first air port is located at the first end of the shell, while the second end of the shell is closed. A second and a third air port are spaced apart along the length of the shell on both sides, with the third air port adjacent to the first air port. The valve core is a valve plate that matches the cross-sectional size of the shell and is spaced within the shell along its cross-sectional direction. This valve plate can move back and forth along the length of the shell under the influence of the pressure difference on both sides. Atmospheric pressure acts on one side of the valve plate, while the other side is subjected to the internal pressure formed by the valve plate and the second end of the shell. This internal pressure is equal to or close to the internal pressure of the inner liner at the first air port. That is, the movement of the valve plate can be adjusted by the internal pressure of the inner liner, thereby adjusting the actual flow area of ​​the third and second air ports. The internal pressure of the inner liner is inversely correlated with humidity; the higher the humidity, the lower the internal pressure. When the humidity inside the inner liner is high, the actual flow area between the third and second air vents is large, resulting in a slower dehumidification speed. Conversely, when the humidity inside the inner liner is low, the actual flow area between the third and second air vents is small, resulting in a faster dehumidification speed.

[0019] Furthermore, a return spring extending along the length of the housing is sandwiched between the valve plate and the end wall of the second end of the housing.

[0020] In the initial state, the valve plate is positioned between the second and third air ports, and the return spring is in its original state. When the actual flow area between the third and second air ports is at its maximum, the return spring is compressed, causing the valve plate to tend to return to its initial state. This allows the valve plate to move smoothly and automatically return to its initial state under the elastic force of the return spring.

[0021] Furthermore, the shell also has a fourth air port with an opening area smaller than the second air port. This fourth air port is located between the second air port and the second end of the shell, and the inner liner has a return port located outside the hot air chamber, which is fluidly connected to the fourth air port. In this way, the fourth air port can play a pressure-relieving role (especially when the actual flow area between the second and third air ports is minimal), preventing excessive internal pressure in the space enclosed by the valve plate and the second end of the shell. The return of gas through the return port to the inner liner cavity reduces heat loss within the inner liner cavity, ensuring cooking efficiency. In addition, the connection between the fourth air port and the return port allows the internal pressure in the space enclosed by the valve plate and the second end of the shell to be closer to the internal pressure of the inner liner, thereby better enabling adaptive adjustment of the inner liner's blower dehumidification speed.

[0022] Furthermore, the return port is adjacent to the first air outlet, and the opening area of ​​the return port is smaller than that of the first air outlet. Concentrating the return port and the first air outlet together can better reduce the impact on the stability of the air field inside the liner, and at the same time, it can make the air pressure at the first air outlet and the return port similar, avoiding the influence of the pressure difference between the two on the airflow velocity of the second air outlet and the third air outlet (when the two are connected).

[0023] Furthermore, it also includes a blower chamber located outside the aforementioned inner liner. This blower chamber has a blower inlet communicating with the outside and a blower outlet fluidly communicating with the aforementioned blower opening. In this way, the blower airflow first enters the blower chamber, stabilizes within it, and then enters the inner liner under the negative pressure at the blower opening. This improves the stability of the blower airflow into the inner liner and reduces the impact of the negative pressure at the blower opening on the valve plate movement. This ensures that the valve plate movement is mainly affected by the pressure difference between atmospheric pressure and the inner liner pressure, thereby improving the reliability of adaptive blower dehumidification.

[0024] Furthermore, a blower hood is provided on the outer surface of the first sidewall of the inner liner. This blower hood, together with the first sidewall, defines the blower cavity. The blower inlet is located on the cover of the blower hood, and the opening of the blower hood constitutes the blower outlet. The blower outlet is enclosed within the blower hood and offset from the blower inlet. This allows for a better formation of the blower cavity and further reduces the impact of negative pressure at the blower outlet on the movement of the valve plate.

[0025] Furthermore, the air inlet is positioned directly opposite the second blade of the aforementioned fan blade, and the fan blade shaft of the hot air blower passes through the air inlet. The motor of the hot air blower is mounted on the outer surface of the aforementioned air shroud via a motor bracket. This allows for a larger and more stable negative pressure at the air inlet, ensuring blowing efficiency and enabling a secure installation of the hot air blower.

[0026] The technical solution adopted to further solve the fourth technical problem mentioned above is: a cooking device, characterized in that it has a cooking inner pot structure as described above.

[0027] The technical solution adopted to further solve the fifth technical problem mentioned above is: a cooking appliance, characterized in that it has the cooking device described above.

[0028] Compared with existing technologies, the advantages of this invention are as follows: An air vent is provided on the first side wall of the inner pot. When the hot air blower is working, a negative pressure is formed at the second blade of the fan, thereby driving the airflow from outside the inner pot through the air vent into the inner pot, compressing the moisture inside the inner pot, and achieving dehumidification, thus improving the dehumidification effect. Furthermore, compared with existing blowing methods, this invention does not require a separate blowing device, and the blowing components are integrated with the existing hot air blower, thereby reducing the space occupied inside the cooking appliance and lowering production costs.

[0029] Furthermore, the gas in the inner liner can flow out through the first air outlet to form a first airflow, and the blower is connected to both the first air outlet and the outside airflow through the blower air passage. A control valve can adjust the ratio of the first airflow to outside air in the blower airflow entering the inner liner. Thus, when the proportion of outside air in the blower airflow is higher, the dehumidification rate of the inner liner is faster (the dehumidification rate is fastest when the blower airflow is entirely composed of outside air), while when the proportion of the first airflow in the blower airflow is higher, the dehumidification rate of the inner liner is slower. The participation of the first airflow in the blower airflow also avoids the direct influence of outside cold air on the internal temperature field of the inner liner, ensuring the uniformity of the internal temperature field. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the cooking inner pot structure in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure from another direction;

[0032] Figure 3 This is a cross-sectional view of the cooking inner pot structure in an embodiment of the present invention;

[0033] Figure 4 for Figure 3Enlarged view of section A;

[0034] Figure 5 This is a schematic diagram of the control valve in an embodiment of the present invention;

[0035] Figure 6 This is a cross-sectional view of the control valve in an embodiment of the present invention. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] In the description of this invention, 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, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0038] A cooking appliance includes a cooking unit and a cooktop mounted on the cooking unit. The cooking unit includes, for example,... Figures 1-6 The cooking inner pot structure is shown.

[0039] Furthermore, the aforementioned cooking inner pot structure includes an inner pot 1, the inner surface of which is covered by a hot air baffle 2 to form a hot air chamber 20. The fan blades 31 of the hot air blower 3 are located within the hot air chamber 20 and face the air inlet 21 of the hot air baffle 2. A back heating pipe 6 is provided around the fan blades 31, and the air outlet 22 of the hot air baffle 2 is located beside the air inlet 21. Further still, a blower 11 is provided on the first side wall of the inner pot 1 within the hot air chamber 20. One side of the fan blades 31 is a first blade 311 facing the air inlet 21 of the hot air baffle 2, and the other side is a second blade 312 opposite the blower 11. The inner liner 1 is also provided with a first air outlet 13 located outside the hot air chamber 20, and the first airflow flows out through the first air outlet 13. The blower 11 is connected to the first air outlet 13 and the outside air through the blower air passage, and the blower air passage includes a control valve 4 for adjusting the ratio of the first airflow to the outside air in the blower airflow blown into the inner liner 1 by the blower air outlet 11.

[0040] As can be seen from the above, an air inlet 11 is provided on the first side wall of the inner liner 1. When the hot air blower 3 is working, a negative pressure is formed at the second blade 312 of the fan blade 31, thereby driving the airflow outside the inner liner 1 to enter the inner liner 1 through the air inlet 11, and then squeezing the moisture inside the inner liner 1 to achieve airflow dehumidification and improve the dehumidification effect. Furthermore, the gas in the inner liner 1 can flow out through the first air outlet 13 to form a first airflow, and the air inlet 11 is connected to the first air outlet 13 and the outside air through the airflow path. The ratio of the first airflow to the outside air in the airflow blown into the inner liner 1 through the control valve 4 can be adjusted. Thus, when the proportion of outside air in the airflow is higher, the dehumidification speed of the inner liner 1 is faster (the dehumidification speed is fastest when the airflow is entirely composed of outside air), while when the proportion of the first airflow in the airflow is higher, the dehumidification speed of the inner liner 1 is slower. Furthermore, the participation of the first airflow in the blower airflow can avoid the direct influence of the outside cold air on the internal temperature field of the inner liner 1, thus ensuring the uniformity of the internal temperature field of the inner liner 1.

[0041] In this embodiment, the first sidewall is the left sidewall of the inner liner 1, while an exhaust port 12 is provided on the upper right side of the rear sidewall of the inner liner 1. This avoids interference between the exhaust from the first exhaust port 13 and the exhaust from the exhaust port 12, ensuring the exhaust effect of the inner liner 1, thereby ensuring the dehumidification effect of the inner liner 1. At the same time, it ensures the exhaust from the first exhaust port 13, thereby ensuring the adjustment of the blower dehumidification.

[0042] Preferably, the first air outlet 13 is located on the first side wall and adjacent to the hot air chamber 20. This allows the first air outlet 13 and the blower 11 to be concentrated on one side of the inner liner 1, facilitating air connection with the control valve 4. Furthermore, positioning the first air outlet 13 at the point where the hot air chamber 20 flows back into the inner liner 1, where the airflow is unstable, ensures the flow speed of the first airflow and avoids the impact on the stability of the air field within the inner liner 1 caused by placing the first air outlet 13 at a stable airflow location. More preferably, the first air outlet 13 is located above the hot air baffle 2, and the hot air baffle 2's outlet 22 includes a first air outlet 22 located at the upper end of the hot air baffle 2. In this way, the hot airflow blown out by the first air outlet 22 can flow out from the first air outlet 13 to form the first airflow. More preferably, the first air outlet 13 and the first air outlet 22 are staggered. This reduces the impact on the temperature field of the upper part of the inner cavity of the inner liner 1 while ensuring the flow velocity of the first airflow at the first air outlet 13. Furthermore, a top heating pipe 8 is installed on the inner top surface of the inner liner 1. The top heating pipe 8 can heat the first airflow from the first air outlet 12, thereby further increasing the temperature of the blown airflow and better preventing the blown-in gas from affecting the temperature field of the inner cavity of the inner liner 1.

[0043] Furthermore, the aforementioned control valve 4 includes a valve body 4a with a valve cavity 400, which has a first air port 401, a second air port 402, and a third air port 403. The first air port 401 communicates with the outside, the second air port 402 is in fluid communication with the first air outlet 13, and the third air port 403 is in fluid communication with the blower 11. The first air port 401 and the third air port 403 are always in communication. Furthermore, a valve core is movably disposed within the valve cavity 400, and this valve core can operate within the valve cavity 400 to control the actual flow area of ​​the third air port 403 and the second air port 402. When the actual flow area of ​​the second air inlet 402 and the third air inlet 403 is large, the proportion of the first airflow in the blown airflow is large, and the dehumidification speed of the inner liner 1 is slow. Conversely, when the actual flow area of ​​the second air inlet 402 and the third air inlet 403 is small, the proportion of the first airflow in the blown airflow is small, and the dehumidification speed of the inner liner 1 is fast. Preferably, the opening area of ​​the first air inlet 401 is larger than that of the third air inlet 403, and the opening area of ​​the third air inlet 403 is larger than that of the second air inlet 402, and the sum of the opening areas of the second air inlet 402 and the third air inlet 403 is less than or equal to that of the first air inlet 401. This ensures the efficiency of the intake of outside air, thereby ensuring the efficiency of the dehumidification, that is, adjusting the dehumidification speed while ensuring a certain dehumidification efficiency.

[0044] Furthermore, the valve body 4a includes an elongated housing 40, the inner cavity of which constitutes the valve cavity 400. The first air port 401 is located at the first end of the housing 40, while the second end of the housing 40 is closed. A second air port 402 and a third air port 403 are spaced apart along the length of the housing 40 on both sides. The third air port 403 is adjacent to the first air port 401. The valve core is a valve plate 41 that matches the cross-sectional size of the housing 40 and is spaced within the housing 40 along its cross-sectional direction. The valve plate 41 can move back and forth along the length of the housing 40 under the influence of the pressure difference on both sides. Thus, atmospheric pressure acts on one side of the valve plate 41, while the other side of the valve plate 41 is subjected to the internal pressure of the space 400a enclosed by the valve plate 41 and the second end of the housing 40. This internal pressure is equal to or close to the internal pressure of the inner liner 1 at the first air port 401. That is, the movement of the valve plate 41 can be adjusted by changing the internal pressure of the inner liner 1, thereby adjusting the actual flow area of ​​the third air port 403 and the second air port 402. The internal pressure of the inner liner 1 is inversely correlated with its humidity; the higher the humidity, the lower the internal pressure. Thus, when the humidity inside the inner liner 1 is high, the actual flow area of ​​the third air port 403 and the second air port 402 is large, resulting in a slower dehumidification speed; conversely, when the humidity inside the inner liner 1 is low, the actual flow area of ​​the third air port 403 and the second air port 402 is small, resulting in a faster dehumidification speed. Specifically, in this embodiment, the outer shell 40 is cylindrical, the first air port 401 is the port at the first end of the shell 40, and the valve plate 41 is a circular plate. Figure 6 As shown, when valve plate 41 is positioned between the second air port 402 and the third air port 403, the actual flow area between the third air port 403 and the second air port 402 is minimized, resulting in the fastest dehumidification speed. However, when valve plate 41 is positioned at the vertical mid-section of the second air port 402, half of the second air port 402 is connected to the third air port 403, resulting in the largest actual flow area between the third air port 403 and the second air port 402, and the slowest dehumidification speed.

[0045] In addition, such as Figure 6 As shown, the aforementioned housing 40 also has a fourth air port 404 with an opening area smaller than the second air port 402. This fourth air port 404 is located between the second air port 402 and the second end of the housing 40. Furthermore, the aforementioned inner liner 1 has a return port 14 located outside the hot air chamber 20, which is in fluid communication with the fourth air port 404. Thus, the fourth air port 404 can function as a pressure relief device (especially when the actual flow area between the second air port 402 and the third air port 403 is minimized, i.e., as...). Figure 6As shown, this design avoids excessive internal pressure in the space 400a enclosed by the valve plate 41 and the second end of the housing 40. Furthermore, the return of gas through the return port 14 to the inner cavity of the inner liner 1 reduces heat loss and ensures cooking efficiency. Additionally, by connecting the fourth air port 404 to the return port 14, the internal pressure in the space 400a enclosed by the valve plate 41 and the second end of the housing 40 is made closer to the internal pressure of the inner liner 1, thus better enabling adaptive adjustment of the airflow and dehumidification speed of the inner liner 1. Preferably, the return port 14 is adjacent to the first air outlet 13, and the opening area of ​​the return port 14 is smaller than that of the first air outlet 13. Concentrating the return port 14 and the first air outlet 13 reduces the impact on the stability of the internal airflow field of the inner liner 1 and allows the air pressure at the first air outlet 13 and the return port 14 to be close, avoiding the influence of the pressure difference on the airflow velocity of the second air port 402 and the third air port 403 (when they are connected).

[0046] Furthermore, in this embodiment, preferably, a return spring 42 extending along the length of the housing 40 is sandwiched between the valve plate 41 and the end wall of the second end of the housing 40. In the initial state, the valve plate 41 is positioned between the second air port 402 and the third air port 403, and the return spring 42 is in its original state, as... Figure 6 As shown, when the actual flow area of ​​the third air port 403 and the second air port 402 is at its maximum (i.e., the valve plate 41 vertically divides the opening of the second air port 402 into two parts), the return spring 42 is compressed, causing the valve plate 41 to tend to return to its initial state. This allows the valve plate 41 to move smoothly and automatically return to its initial state under the elastic force of the return spring 42.

[0047] Furthermore, it also includes a blower chamber 50 disposed outside the inner liner 1. The blower chamber 50 has a blower inlet 501 communicating with the outside and a blower outlet 502 communicating with the blower port 11. In this way, the blower airflow first enters the blower chamber 50, and after being stabilized in the blower chamber 50, it enters the inner liner 1 under the negative pressure at the blower port 11. On the one hand, it improves the stability of the blower airflow to the inner liner 1, and on the other hand, it reduces the influence of the negative pressure at the blower port 11 on the movement of the valve plate 41. This makes the movement of the valve plate 41 mainly affected by the pressure difference between atmospheric pressure and the internal pressure of the inner liner 1, thereby improving the reliability of adaptive blower dehumidification. Specifically, a blower shroud 5 is provided on the outer surface of the first sidewall of the inner liner 1. The blower shroud 5 and the first sidewall define the blower cavity 50. The blower inlet 501 is opened on the shroud of the blower shroud 5, and the opening of the blower shroud 5 constitutes the blower outlet 502. The blower port 11 is covered in the blower shroud 5 and is offset from the blower inlet 501. This allows for a better formation of the blower cavity 50 and further reduces the impact of the negative pressure at the blower port 11 on the movement of the valve plate 41. In this embodiment, preferably, the blower port 11 is directly opposite the second blade 312 of the fan blade 31, and the fan shaft 30 of the hot air blower 3 passes through the blower port 11. The motor 32 of the hot air blower 3 is mounted on the outer surface of the blower shroud 5 via a motor bracket 7. This allows for a larger and more stable negative pressure at the blower port 11, ensuring blower efficiency and achieving a stable installation of the hot air blower 3.

[0048] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber that allows fluid to flow through, or a combination of the above.

Claims

1. A cooking liner structure comprising a liner (1), a hot air baffle (2) being provided on an inner surface of a first side wall of the liner (1) to form a hot air chamber (20), a fan blade (31) of a hot air machine (3) being located in the hot air chamber (20) and facing an air inlet (21) of the hot air baffle (2), a back heating pipe (6) being provided on a periphery of the fan blade (31), and an air outlet (22) of the hot air baffle (2) being provided on a side of the air inlet (21), characterized in that, the liner (1) is provided with a blowing port (11) in the hot air chamber (20), one side of the fan blade (31) is a first blade (311) facing the air inlet (21) of the hot air baffle (2), and the other side is a second blade (312) facing the blowing port (11), the liner (1) is further provided with a first air outlet (13) outside the hot air chamber (20), and a first air flow is discharged through the first air outlet (13), the blowing port (11) is in fluid communication with the first air outlet (13) and the outside through a blowing air path, and the blowing air path comprises a control valve (4) for adjusting a proportion of the first air flow and outside air in a blowing air flow blown into the liner (1) through the blowing port (11), the control valve (4) comprises a valve body (4a) with a valve cavity (400), the valve cavity (400) has a first air port (401), a second air port (402) and a third air port (403), the first air port (401) is in communication with the outside, the second air port (402) is in fluid communication with the first air outlet (13), and the third air port (403) is in fluid communication with the blowing port (11), the first air port (401) and the third air port (403) are always in communication, and a valve core is movably arranged in the valve cavity (400), and the valve core can act in the valve cavity (400) to control actual flow areas of the third air port (403) and the second air port (402). The first air outlet (13) is provided on the first side wall and adjacent to the hot air chamber (20). The first air outlet (13) is located above the hot air baffle (2), and the air outlet (22) of the hot air baffle (2) comprises a first air outlet (22) located at an upper end of the hot air baffle (2). The first air outlet (13) and the first air outlet (22) are staggered. The liner (1) is further provided with an exhaust port (12), and the exhaust port (12) and the first air outlet (13) are located on opposite sides of the liner (1).

2. The cooking liner structure of claim 1, wherein, An opening area of the first air port (401) is greater than that of the third air port (403), an opening area of the third air port (403) is greater than that of the second air port (402), and a combined opening area of the second air port (402) and the third air port (403) is less than or equal to that of the first air port (401).

3. The cooking liner structure of claim 2, wherein, ​ 4. The cooking liner structure of claim 3, wherein, ​ 5. The cooking liner structure according to any one of claims 1 to 4, characterized in that, ​ 6. The cooking liner structure of claim 1, wherein, ​ 7. The cooking liner structure of claim 1, wherein, The valve body (4a) comprises a long strip-shaped shell (40), an inner cavity of the shell (40) forms the valve cavity (400), the first gas port (401) is arranged at the end of the first end of the shell (40), the second end of the shell (40) is closed, and the second gas port (402) and the third gas port (403) are arranged at the two sides of the shell (40) in the length direction and are spaced apart, wherein the third gas port (403) is adjacent to the first gas port (401), the valve core is a valve plate (41) which is matched with the cross-sectional size of the shell (40) and is arranged in the shell (40) in the cross-sectional direction of the shell (40), and the valve plate (41) can move back and forth in the length direction of the shell (40) under the pressure difference of the two sides.

8. The cooking liner structure of claim 7, wherein, The valve plate (41) and the end wall of the second end of the shell (40) are clamped with a reset spring (42) extending in the length direction of the shell (40), In the initial state, the valve plate (41) is arranged between the second gas port (402) and the third gas port (403), the reset spring (42) is in the original state, and in the state that the actual flow area of the third gas port (403) and the second gas port (402) is the largest, the reset spring (42) is compressed and the valve plate (41) has a tendency to return to the initial state.

9. The cooking liner structure of claim 8, wherein, The shell (40) is further provided with a fourth gas port (404) with an opening area smaller than the second gas port (402), which is located between the second gas port (402) and the second end of the shell (40), and the inner container (1) is provided with a backflow port (14) located outside the hot air chamber (20), which is in fluid communication with the fourth gas port (404).

10. The cooking liner structure of claim 9, wherein, The backflow port (14) is adjacent to the first gas outlet (13), and the opening area of the backflow port (14) is smaller than that of the first gas outlet (13).

11. The cooking liner structure of any one of claims 1 to 4, wherein, Further comprising a blast cavity (50) arranged outside the inner container (1), the blast cavity (50) has a blast inlet (501) in communication with the outside and a blast outlet (502) in fluid communication with the blast port (11).

12. The cooking liner structure of claim 11, wherein, The outer surface of the first side wall of the inner container (1) is covered with a blast cover (5), the blast cover (5) and the first side wall define the blast cavity (50), the blast inlet (501) is arranged on the cover of the blast cover (5), the cover opening of the blast cover (5) forms the blast outlet (502), and the blast port (11) is covered in the blast cover (5) and is arranged staggered with the blast inlet (501).

13. The cooking liner structure of claim 12, wherein, The blast port (11) is arranged opposite to the second blade (312) of the fan blade (31), the fan shaft (30) of the hot air machine (3) penetrates the blast port (11), and the motor (32) of the hot air machine (3) is mounted on the outer surface of the blast cover (5) through the motor support (7).

14. A cooking apparatus, characterized by, The cooking inner container structure has any one of claims 1-13.

15. A cooking all-in-one machine, characterized in that, The cooking device has claim 14.

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