Inner container structure of cooking device and oven with the same

Abstract

The present invention relates to an inner pot structure of a cooking device and an oven thereof, comprising an inner pot, a hot air baffle plate arranged in the inner pot, the hot air baffle plate and a hot air chamber, an air inlet comprising an upper air inlet and a lower air inlet, the upper and lower air inlets being arranged at intervals along the middle of the hot air baffle plate, an upper hot air blower and a lower hot air blower corresponding to the upper and lower air inlets respectively being installed in the hot air chamber, a partition plate being horizontally and transversely installed on the back of the hot air baffle plate at the middle position between the upper and lower air inlets, a first middle air outlet opening being opened on one side of the middle of the hot air baffle plate, the setting height of the partition plate being located at the middle and upper part of the height direction of the first middle air outlet opening, and the first middle air outlet opening being located on the outer side of the partition plate. The present invention solves the problem of insufficient air outlet in the middle and upper part of the hot air baffle plate, and can increase the air outlet volume of the hot air baffle plate above the side, thereby improving the effect of single-layer baking, thereby achieving single-layer baking and double-layer baking at the same time.

Description

Technical Field

[0001] The invention relates to the field of cooking devices, and in particular to an inner container structure of a cooking device and an oven with the inner container structure. Background Art

[0002] In the hot air blower system of the oven, the hot air blower mainly blows out the air heated by the heating tube from the hot air baffle outlet. After the hot air forms an internal circulation in the oven liner, it returns to the back of the oven from the hot air baffle inlet. At present, the ovens on the market are mainly single-fan ovens. The hot air blower is installed on the back plate of the liner. The annular back heating tube is installed on the outer periphery of the hot air blower with the motor shaft of the hot air blower as the center of the circle. The hot air baffle is fixed on the inner side of the back plate of the liner, covering the circulation fan and the back heating tube, forming a hot air chamber in the hot air baffle. When the hot air blower and the back heating tube are working, the pressure at the center of the circulation fan is low and the pressure around is high. The circulation fan inhales cold air at the air inlet in the center area, and is heated by the back heating tube to become hot air and flows from the air outlet to the liner. The hot air chamber inhales cold air from the center and blows hot air to the surrounding areas, forming circulating hot air in the oven liner, and performing forced convection heat exchange on the food on the baking tray in the liner.

[0003] Single-fan ovens have insufficient air volume at the air outlet, and the hot air cannot reach the door, resulting in uneven coloring of baked food. To solve this problem, ovens with dual fans are now on the market. In this type of oven, two hot air blowers are arranged up and down, and a partition is set on the back of the hot air baffle, so that each hot air blower is in an independent hot air chamber. Compared with single-fan ovens, the circulating air volume of the air outlet of the dual-fan oven is large enough, and the hot air can reach the door and then return from the center to cover all food surfaces. For example, the oven dual-fan system disclosed in the Chinese utility model patent No. ZL201721918690.4 (authorization announcement No. CN207662174U).

[0004] However, the air outlets of existing oven fan systems are generally symmetrically opened, but after the hot air blower rotates, the air volume on one side will be greater than the air volume on the other side, making it impossible for the hot air flow to be evenly distributed in the inner pot, thereby causing one side of the baked food to be darker than the other side, affecting the baking effect of the oven. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide an inner pot structure of a cooking device with good temperature field uniformity in view of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide an inner pot structure of a cooking device with good baking effect in view of the prior art.

[0007] The third technical problem to be solved by the present invention is to provide an inner pot structure of a cooking device suitable for both single-layer baking and double-layer baking in view of the prior art.

[0008] The fourth technical problem to be solved by the present invention is to provide an oven with good baking effect in view of the prior art.

[0009] The technical solution adopted by the present invention to solve at least one of the above technical problems is: an inner pot structure of a cooking device, including an inner pot, a hot air baffle with an air inlet is arranged in the inner pot, a hot air chamber is formed between the hot air baffle and the back plate of the inner pot, the above air inlet includes an upper air inlet and a lower air inlet, the upper and lower air inlets are arranged at intervals along the middle of the hot air baffle, the above hot air chamber is installed with an upper hot air blower and a lower hot air blower corresponding to the upper and lower air inlets respectively, a partition is horizontally installed on the back side of the above hot air baffle at the middle position between the upper and lower air inlets, and it is characterized in that a first middle air outlet is opened on one side of the middle part of the hot air baffle, the installation height of the above partition is located at the upper middle part of the height direction of the first middle air outlet, and the first middle air outlet is located on the outside of the above partition.

[0010] Furthermore, the first middle air outlet is formed by the side edge of the hot air baffle being recessed inwards, which facilitates the processing and setting of the first middle air outlet and increases the air volume of the first middle air outlet.

[0011] Furthermore, the hot air baffle is in the shape of a cover, and a first top air outlet is provided on one side of the top wall thereof. The hot air flow blown out of the hot air chamber can be directed to the top area of ​​the inner container by providing the first top air outlet.

[0012] Furthermore, the first top air outlet is in the shape of a long strip and extends in the left and right directions of the hot air baffle, and is formed by the top edge of the hot air baffle being recessed inwards, which facilitates the processing and setting of the first top air outlet and also enables the air from the first top air outlet to be better blown to the top area of ​​the inner tank.

[0013] Furthermore, in order to better distribute the hot air in the top area of ​​the inner liner, a second top air outlet is provided at the upper end of the front side of the hot air baffle below the first top air outlet. In this way, more hot air flow can be distributed in the top area of ​​the inner liner through the cooperation of the first top air outlet and the second top air outlet.

[0014] Furthermore, there is at least one second top air outlet hole and the second top air outlet hole is evenly spaced along the left and right directions of the hot air baffle plate, and each second top air outlet hole is in the shape of a long strip and extends along the left and right directions of the hot air baffle plate, so that the air outlet of the second top air outlet hole can be uniform, and the hot air flow can be better blown to the top area of ​​the inner tank.

[0015] Furthermore, a first upper air outlet hole is provided on the side wall of the upper portion of the hot air baffle on the side where the first top air outlet hole is located. The first upper air outlet hole is used to meet the air outlet on the upper side of the hot air baffle, thereby promoting the baking of the fifth layer of food on the opposite side rack and improving the coloring effect of the fourth layer of food on the opposite side rack.

[0016] Furthermore, the first upper air outlet is in the shape of a long strip and extends in the vertical direction of the hot air baffle, and is formed by the side edge of the hot air baffle being recessed inwards, so as to facilitate the processing and manufacturing of the first upper air outlet, and at the same time, in multi-layer baking, the first upper air outlet can better take into account the baking of the fifth layer and the fourth layer of food on the opposite side bracket.

[0017] Furthermore, a second upper air outlet hole is provided inside the first upper air outlet hole on the front side of the hot air baffle plate adjacent to the first upper air outlet hole. The second upper air outlet hole is provided to assist the first upper air outlet hole in discharging air, thereby further increasing the air volume on the upper side of the hot air baffle plate.

[0018] Furthermore, there is at least one second upper air outlet hole and the second upper air outlet hole is evenly spaced along the vertical direction of the hot air baffle, and each second upper air outlet hole is in the shape of a long strip and extends along the vertical direction of the hot air baffle, so that the air outlet of the second upper air outlet hole is uniform, and at the same time, it can better assist in baking the food on the fifth and fourth layers of the side rack.

[0019] Furthermore, a third top air outlet is provided on the other side of the upper end of the front side of the hot air baffle. The third top air outlet cooperates with the other air outlets to blow the hot air flow from the hot air chamber to most areas of the top of the inner tank.

[0020] Furthermore, there is at least one third top air outlet hole and the third top air outlet hole is evenly spaced along the left and right directions of the hot air baffle plate and / or evenly spaced along the front and back directions, and each third top air outlet hole is in the shape of a long strip and extends along the left and right directions of the hot air baffle plate, so that the third top air outlet hole can evenly discharge air and can better blow the hot air flow toward the top of the inner tank.

[0021] Furthermore, a second middle air outlet hole is provided in the middle of the front of the hot air baffle on the side where the first middle air outlet hole is located, and the second middle air outlet hole is provided at a height lower than the height of the partition and is located outside the partition. By providing the second middle air outlet hole as the main air outlet hole on the front of one side of the lower part of the hot air baffle, the heat requirement for single-layer baking, especially baking on the third layer of the side bracket, is met.

[0022] Furthermore, there is at least one second middle air outlet hole and the second middle air outlet hole is evenly spaced along the left and right directions of the hot air baffle, and each second middle air outlet hole is in the shape of a long strip and extends along the up and down directions of the hot air baffle, so that the second middle air outlet hole can evenly discharge air and better provide heat for the food to be baked.

[0023] Furthermore, the second middle air outlet is located below the outer side of the corresponding end of the partition.

[0024] Furthermore, a third middle air outlet is provided on the other side of the middle of the front of the hot air baffle. By providing the third middle air outlet as the main air outlet on the other side of the front of the lower part of the hot air baffle, the heat requirement for single-layer baking, especially baking on the third layer of the side bracket, is met.

[0025] Furthermore, there is at least one third middle air outlet hole and the third middle air outlet hole is evenly spaced along the left and right directions of the hot air baffle, and each third middle air outlet hole is in the shape of a long strip and extends along the left and right directions of the hot air baffle, so that the third middle air outlet hole can evenly discharge air and better blow the hot air flow to the food to be baked.

[0026] Furthermore, the third middle air outlet is located below the partition, so as to avoid the interference of the rotation of the upper hot air blower on the air outlet of the third middle air outlet, and at the same time enable the hot air flow blown out of the third middle air outlet to better reach the third and second layers of the side bracket.

[0027] The partition has a relatively large resistance to the airflow. To supplement the air outlet of the third middle air outlet, a fourth middle air outlet is further provided on the front side of the hot air baffle at the outer side of the third middle air outlet.

[0028] Furthermore, there is at least one fourth middle air outlet hole and the fourth middle air outlet hole is evenly spaced along the left and right directions of the hot air baffle, and each fourth middle air outlet hole is in the shape of a long strip and extends along the up and down directions of the hot air baffle, so that the air outlet of the fourth middle air outlet hole is uniform and can better supplement the hot air flow to the third and second layers of the side bracket.

[0029] Furthermore, the fourth middle air outlet is located below the outer side of the corresponding end of the partition. Since the fourth middle air outlet is located outside the hot air baffle, it is relatively less affected by the rotation of the hot air blower. The above arrangement can better avoid the partition from blocking the airflow, thereby ensuring the air outlet at the fourth middle air outlet.

[0030] Furthermore, a first bottom air outlet is provided at the bottom of the hot air baffle, and the first bottom air outlet and the first top air outlet are staggered in the left-right direction of the hot air baffle. The hot air flow in the hot air chamber is blown to the bottom area of ​​the inner pot by the first bottom air outlet, so as to color the bottom of the food, and the air outlet of the top air outlet is balanced by staggering with the first top air outlet.

[0031] Furthermore, the first bottom air outlet is provided on the bottom wall of the hot air baffle, and the number of the first bottom air outlet is at least one and is evenly spaced along the left and right directions of the hot air baffle, and the shape of each first bottom air outlet is long and extends along the left and right directions of the hot air baffle, so that the air outlet of the first bottom air outlet is uniform, and the hot air flow can be better blown to the bottom of the inner tank.

[0032] Furthermore, a first lower air outlet is provided on one side of the lower portion of the hot air baffle, and the outer end of the fan blade of the lower hot air blower moves from top to bottom at a height adjacent to the first lower air outlet. The first lower air outlet is provided to supplement the air flow of the first bottom air outlet, so that the hot air flow can be blown to most areas of the bottom of the inner tank.

[0033] Furthermore, the first lower air outlet is provided on the side wall of the hot air baffle and extends in the up-down direction of the hot air baffle, so that the hot air flow at the bottom of the inner tank can be supplemented while the front air outlet at the other side of the lower part of the hot air baffle can be supplemented.

[0034] Furthermore, a guide surface capable of directing the airflow in the hot air chamber to the corresponding air outlet holes is provided on the rear inner surface of the hot air chamber at least at the corresponding position of each air outlet hole. The flow direction of the hot air flow in the hot air chamber can be changed by providing the guide surface, so that the hot air flow can enter the inner tank more smoothly through each air outlet hole.

[0035] Furthermore, the guide surface includes a first guide surface extending in the left-right direction of the hot air baffle and a second guide surface extending in the up-down direction of the hot air baffle, wherein the first guide surface is inclined outward from top to bottom, and the inclination angle is 110° to 130°, and the second guide surface is inclined inward from outside to inside, and the inclination angle is 110° to 130°. Through the design of the inclination angle of the first guide surface and the second guide surface, on the one hand, the resistance of each guide surface to the airflow in the hot air chamber can be reduced, and on the other hand, the hot air flow can be blown into the inner tank more smoothly.

[0036] Furthermore, the guide surface is in the shape of a closed ring, which is formed by the inner surface of the inner tank back plate protruding backwards, and the guide surface is arranged opposite to the hot air baffle and the sizes of the two are matched. In this way, the guide surface can better guide the hot air flow to each air outlet.

[0037] Furthermore, the upper and lower air inlets are circular arrays formed by arranging air inlet holes, and the outer ends of the fan blades of the upper and lower hot air blowers are located at the periphery of the corresponding air inlet. Since the pressure difference of the outer ring of the fan blade is small, the outer ends of the fan blades are located at the periphery of the corresponding air inlet, thereby improving the efficiency of air intake.

[0038] Furthermore, the air inlet holes include first air inlet holes, and each first air inlet hole is an arc strip hole concentric with the circular array, so as to maximize the air inlet area of ​​each air inlet, thereby improving the air inlet efficiency of each air inlet.

[0039] Furthermore, the air inlet holes also include circular second air inlet holes, and a first air inlet ring is arranged at the center of the circular array with the center of the circle as the center, and the first air inlet ring is formed by the first air inlet holes arranged at intervals along the circumferential direction, and the outer periphery of the first air inlet ring is concentrically arranged with a second air inlet ring, and the second air inlet ring is formed by the second air inlet holes arranged at intervals along the circumferential direction, and the outer periphery of the second air inlet ring is at least concentrically arranged with a circle of third air inlet rings, and the third air inlet ring is formed by the second air inlet holes arranged at intervals along the circumferential direction, and the area of ​​the second air inlet holes in each third air inlet ring increases from the inside to the outside, and one of the first air inlet holes is arranged between the adjacent second air inlet holes in each third air inlet ring. In this way, on the basis of ensuring the air intake efficiency, it is convenient for processing and manufacturing, and at the same time, the hot air baffle structure at each air inlet can be stabilized.

[0040] The technical solution adopted to solve the third technical problem is: an oven having the inner tank structure as described above.

[0041] Compared with the prior art, the advantages of the present invention are: a partition is arranged between the upper and lower hot air blowers, so that the air outlets of the upper and lower hot air blowers can be prevented from interfering with each other. In addition, a first middle air outlet is opened on one side of the middle part of the hot air baffle, and the installation height of the above-mentioned partition is located in the middle and upper part of the height direction of the first middle air outlet, so that the airflow in the hot air chamber is disturbed by the rotation of the upper and lower hot air blowers, so that the first middle air outlet can be used as an auxiliary air outlet on the upper part of the hot air baffle to supplement the air outlet on the upper part of the hot air baffle, thereby solving the problem of insufficient air outlet in the middle and upper part of the hot air baffle. At the same time, the first middle air outlet can also be used as the main air outlet on one side of the lower part of the hot air baffle (the side where the first middle air outlet is located), thereby increasing the air outlet volume above the hot air baffle on this side, improving the overall temperature field uniformity of the inner cavity of the inner tank, and improving the effect of single-layer baking, especially the baking effect of the baking tray placed on the third layer of the side bracket in single-layer baking, so that both single-layer baking and double-layer baking can obtain good baking effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a structural schematic diagram of an oven in an embodiment of the present invention;

[0043] Figure 2 is a cross-sectional view of an oven according to an embodiment of the present invention;

[0044] Figure 3 is another cross-sectional view of the oven in the embodiment of the present invention;

[0045] Figure 4 is a schematic diagram of a partial structure of an oven in an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of the structure of a hot air baffle in an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the structure of the upper air inlet in an embodiment of the present invention;

[0048] Figure 7 Schematic diagram of the structure of the back plate of the inner container in an embodiment of the present invention;

[0049] Figure 8 It is a structural schematic diagram of an oven in a single-layer baking state according to an embodiment of the present invention;

[0050] Fig. 9 It is a schematic diagram of the structure of an oven in a double-layer baking state according to an embodiment of the present invention;

[0051] Fig.10 This is a flow field simulation diagram of the third baking tray in a single-layer baking state in an embodiment of the present invention;

[0052] Fig.11 This is a flow field simulation diagram at the fourth baking tray in a double-layer baking state in an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below with reference to the accompanying drawings.

[0054] like Figures 1 to 9 As shown, an oven includes an inner tank structure, the inner tank structure includes an inner tank 1, an upper heating tube 21 is installed on the top surface of the inner tank 1, a lower heating tube 23 is provided on the bottom surface of the inner tank 1, and side brackets 9 are respectively installed on the left and right inner walls of the inner tank 1. In addition, a hot air baffle 3 with an air inlet is provided in the inner tank 1, and a hot air chamber 30 is formed between the hot air baffle 3 and the back plate 12 of the inner tank 1. The above-mentioned air inlet includes an upper air inlet 701 and a lower air inlet 702. The upper and lower air inlets 701, 702 are arranged at intervals along the middle of the hot air baffle 3. The above-mentioned hot air chamber 30 is installed with an upper hot air blower 81 and a lower hot air blower 82 corresponding to the upper and lower air inlets 701, 702, respectively. The outer peripheries of the upper and lower hot air blowers 81, 82 are respectively surrounded by an annular back heating tube 22. A partition 11 is horizontally fixed on the back of the hot air baffle 3 at the middle position between the upper and lower air inlets 701, 702. When installed, the front end of the partition 11 is fixed to the rear surface of the hot air baffle 3, and the rear end is fixed to the front surface of the back plate 12 of the inner tank 1, thereby separating the hot air chamber 30 up and down to avoid mutual interference between the air outlets of the upper and lower hot air blowers 81, 82. The rotation directions of the fan blades of the upper and lower hot air blowers 81, 82 are consistent. In this embodiment, the rotation directions of the fan blades of the upper and lower hot air blowers 81, 82 are both clockwise. In this embodiment, each side bracket 9 has five layers, namely the first layer 91, the second layer 92, the third layer 93, the fourth layer 94 and the fifth layer 95. Among them, the baking tray 13 is placed on the third layer 93 of the side bracket 9 when baking in a single layer by default. Figure 8As shown, in double-layer baking, two baking trays 13 are placed on the second layer 92 and the fourth layer 94 of the side bracket 9, respectively. Fig. 9 As shown, the second layer 92 is located at a lower position of the inner cavity of the inner pot 1 corresponding to the upper part of the hot air baffle 3, and the fourth layer 92 is located at a lower position of the inner cavity of the inner pot 1 corresponding to the lower part of the hot air baffle 3. When the baking tray 13 is located at these two layers, the upper and lower air inlets 701, 702 are blocked in a smaller area, and each baking tray 13 is located on the best path of the return air, so the cooking effect is the best. In this embodiment, the flow field simulation diagrams under the single-layer baking and double-layer baking states are shown as follows: Fig.10 and Fig.11 The upper and lower air inlets 701 and 702 have the same structure, wherein the structure of the upper air inlet 701 is as shown in FIG. Figure 6 shown.

[0055] The upper and lower air inlets 701, 702 are circular arrays formed by air inlet holes. Since the outer circle pressure difference of the fan blades of each hot air blower is small when the upper and lower hot air blowers 81, 82 rotate, in this embodiment, the outer ends of the fan blades of the upper and lower hot air blowers 81, 82 are located at the periphery of the corresponding air inlet, thereby improving the air intake efficiency. Further, the air inlet holes include a first air inlet hole 71 and a second air inlet hole 72, wherein the first air inlet hole 71 is a circular arc strip hole concentric with the circular array, thereby maximizing the air intake area of ​​each air inlet, thereby improving the air intake efficiency of each air inlet, and the second air inlet hole 72 is a circular hole, thereby reducing the difficulty of opening a hole on the hot air baffle 3. The center of the circular array is provided with a first air inlet ring 7a, which is formed by the first air inlet holes 71 arranged at intervals along the circumferential direction, and the outer periphery of the first air inlet ring 7a is concentrically provided with a second air inlet ring 7b, which is formed by the second air inlet holes 72 arranged at intervals along the circumferential direction, and the outer periphery of the second air inlet ring 7b is provided with at least one circle of third air inlet rings 7c concentrically, which is formed by the second air inlet holes 72 arranged at intervals along the circumferential direction, and the area of ​​the second air inlet holes 72 in each third air inlet ring 7c increases from the inside to the outside, and one of the first air inlet holes 71 is respectively provided between the adjacent second air inlet holes 72 in each third air inlet ring 7c. In this way, on the basis of ensuring the air inlet efficiency, it is convenient to process and manufacture, and at the same time, the structure of the hot air baffle 3 at each air inlet can be made stable.

[0056] In this embodiment, the outer side of the hot air baffle 3 is in the shape of a cover, which includes a front side, a top wall, a bottom wall, a left side wall and a right side wall. The hot air baffle 3 is also provided with air outlets, which include the following first top air outlet 41, second top air outlet 42, third top air outlet 43, first upper air outlet 51, second upper air outlet 52, first middle air outlet 61, second middle air outlet 62, third middle air outlet 63, fourth middle air outlet 64, first lower air outlet 31 and first bottom air outlet 32. In this embodiment, the back plate 12 of the inner liner 1 is convex to the rear to form a groove, and the side wall of the groove forms a closed ring-shaped guide surface 10, which is directly opposite to the hot air baffle 3 from front to back and the sizes of the two are matched. The guide surface 10 can change the flow direction of the hot air flow in the hot air chamber 30, so that the hot air flow can enter the inner liner 1 more smoothly through each air outlet. Preferably, the guide surface 10 includes a first guide surface 101 extending in the left-right direction of the hot air baffle 3 and a second guide surface 102 extending in the up-down direction of the hot air baffle 3, wherein the first guide surface 101 is inclined outward from top to bottom, and the inclination angle is 110° to 130° (preferably 120°), and the second guide surface 102 is inclined inward from outside to inside, and the inclination angle is 110° to 130° (preferably 120°). Through the design of the inclination angles of the first guide surface 101 and the second guide surface 102, on the one hand, the resistance of each guide surface 10 to the airflow in the hot air chamber 30 can be reduced, and on the other hand, the hot air flow can be blown into the inner tank 1 more smoothly.

[0057] Furthermore, the first top air outlet 41 is provided on the left side of the top wall of the hot air baffle 3. In the present embodiment, the first top air outlet 41 is in the shape of an elongated strip and extends in the left-right direction of the hot air baffle 3, and is formed by the top edge of the hot air baffle 3 being recessed inward. The first top air outlet 41 is used to guide the hot air flow in the hot air chamber 30 to the top of the inner pot 1, so that the heat from the upper end of the baking tray 13 has a more obvious coloring effect on the food, thereby improving the baking effect, especially for the baking tray 13 placed on the third layer 93 of the side bracket 9 in a single-layer baking and the baking tray 13 placed on the fourth layer 94 of the side bracket 9 in a double-layer baking. The first top air outlet 41 is formed by the top edge of the hot air baffle 3 facing inward, which facilitates the processing and manufacturing of the first top air outlet 41. A second top air outlet 42 is provided at the upper end of the front side of the hot air baffle 3 below the first top air outlet 41. In this embodiment, there are three second top air outlets 42 and they are evenly spaced along the left and right directions of the hot air baffle 3. Each second top air outlet 42 is in the shape of a long strip and extends along the left and right directions of the hot air baffle 3. Through the cooperation of the first top air outlet 41 and the second top air outlet 42, more hot air can be blown to the top of the inner tank 1. A first upper air outlet 51 is provided at the upper end of the left side wall of the hot air baffle 3. The first upper air outlet 51 is in the shape of a long strip and extends along the up and down directions of the hot air baffle 3, and is formed by the left edge of the hot air baffle 3 being recessed inward. The first upper air outlet 51 is used to meet the air outlet of the upper left side of the hot air baffle 3, promote the baking of the food on the fifth layer 95 of the opposite side bracket 9, and improve the coloring effect of the food on the fourth layer 94 of the opposite side bracket 9. The first upper air outlet 51 is formed by the left edge of the hot air baffle 3 being recessed inward, which facilitates the processing and manufacturing of the first upper air outlet 51. The inner side of the first upper air outlet 51 is provided with a second upper air outlet 52 on the front of the hot air baffle 3 adjacent to the first upper air outlet 51. In this embodiment, there are two second upper air outlets 52 and they are spaced apart along the up and down direction of the hot air baffle 3. The shape of each second upper air outlet 52 is long and extends along the up and down direction of the hot air baffle 3. The second upper air outlet 52 is provided to assist the first upper air outlet 51 in air outlet, thereby further increasing the air outlet volume on the upper left side of the hot air baffle 3. A third top air outlet hole 43 is provided on the right side of the upper end of the front side of the hot air baffle 3. In the present embodiment, there are three third top air outlet holes 43, two of which are arranged at intervals along the left and right directions of the hot air baffle 3, and the other one is located below the third top air outlet hole 43 located on the outer side of the two third top air outlet holes 43, and the shape of each third top air outlet hole 43 is long strip and extends along the left and right directions of the hot air baffle 3.

[0058] In this way, the blades of the upper hot air blower 81 rotate clockwise, and the airflow on the upper left side of the hot air chamber 30 moves to the first top air outlet 41 and the second top air outlet 42 under the action of the first guide surface 101 on the upper side, and enters the inner tank 1 through the first top air outlet 41 and the second top air outlet 42. The airflow on the upper right side of the hot air chamber 30 moves to the third top air outlet 43 under the action of the first guide surface 101 on the upper side, and enters the inner tank 1 through the third top air outlet 43. At the same time, the airflow on the upper left side of the hot air chamber 30 moves to the first upper air outlet 51 and the second upper air outlet 52 under the action of the second guide surface 102 on the left side, and enters the inner tank 1 through the first upper air outlet 51 and the second upper air outlet 52. Among them, the first top air outlet 41, the second top air outlet 42, the first upper air outlet 51 and the second upper air outlet 52 have a small wind resistance and are the main air outlets on the top of the hot air baffle 3, while the third top air outlet 43 is an auxiliary air outlet. Among them, the first top air outlet 41 and the second top air outlet 42 blow the hot air flow in the hot air chamber 30 to most of the top area of ​​the inner pot 1, and the third top air outlet 43 blows the hot air flow to the remaining area of ​​the top of the inner pot 1, and the air flow at the top of the inner pot 1 circulates evenly, which can replace the upper heating tube 21, that is, under certain conditions (such as the power setting of the upper hot air blower 81, the design of the air outlet area of ​​each top air outlet, etc.), the oven in the present invention does not need to be provided with the upper heating tube 21, and the heating of the top area of ​​the inner pot 1 can be achieved through the above-mentioned top air outlets.

[0059] The bottom wall of the hot air baffle 3 is provided with a first bottom air outlet 32, and the first bottom air outlet 32 ​​and the first top air outlet 41 are staggered in the left-right direction of the hot air baffle 3, that is, in this embodiment, the first bottom air outlet 32 ​​is provided on the right side of the bottom wall of the hot air baffle 3. There are two first bottom air outlets 32, which are arranged at intervals in the left-right direction of the hot air baffle 3. The shape of each first bottom air outlet 32 ​​is a long strip and extends in the left-right direction of the hot air baffle 3. The air outlet of the first bottom air outlet 32 ​​can blow to most areas of the bottom of the inner pot 1, balance the air outlet of the first top air outlet 41, and color the bottom of the food, especially the baking tray 13 placed on the third layer 93 of the side bracket 9 in single-layer baking and the baking tray 13 placed on the second layer 92 of the side bracket 9 in double-layer baking. In addition, a first lower air outlet hole 31 is opened on the right side of the lower part of the hot air baffle 3, and the movement trajectory of the outer end of the fan blade of the above-mentioned lower hot air blower 82 is from top to bottom near this height. In this embodiment, the first lower air outlet hole 31 is opened on the right side wall of the hot air baffle 3 and extends along the up and down directions of the hot air baffle 3.

[0060] In this way, the fan blades of the lower hot air blower 82 rotate clockwise, and the airflow on the lower right side of the hot air chamber 30 moves to the first bottom air outlet 32 ​​under the action of the lower first guide surface 101, and enters the inner tank 1 through the first bottom air outlet 32. At the same time, the airflow on the lower right side of the hot air chamber 30 moves to the first lower air outlet 31 under the action of the second guide surface 102 on the right side, and enters the inner tank 1 through the first lower air outlet 31. The first bottom air outlet 32 ​​can blow the hot air flow in the hot air chamber 30 to most areas of the bottom of the inner pot 1, while the first lower air outlet 31 can blow the hot air flow in the hot air chamber 30 to the remaining area of ​​the bottom of the inner pot 1, so as to realize uniform circulation of the air flow at the bottom of the inner pot 1, and can replace the lower heating tube 23. That is, under certain conditions (such as the power setting of the lower hot air blower 82, the design of the air outlet area of ​​each first bottom air outlet 32 ​​and the first lower air outlet 31, etc.), the oven in the present invention does not need to be provided with the lower heating tube 23, and the heating of the top area of ​​the inner pot 1 can be achieved through the above-mentioned first bottom air outlet holes 32 and the first lower air outlet holes 31.

[0061] The first middle air outlet 61 is provided on the left side of the middle of the hot air baffle 3, the installation height of the partition 11 is located at the middle and upper part of the height direction of the first middle air outlet 61, and the first middle air outlet 61 is located at the lower outer side of the left end of the partition 11. In this way, the airflow in the hot air chamber 30 is disturbed by the rotation of the upper and lower hot air blowers 81, 82, so that the first middle air outlet 61 can be used as an auxiliary air outlet on the upper part of the hot air baffle 3 to supplement the air outlet on the upper part of the hot air baffle 3, solving the problem of insufficient air outlet in the middle and upper part of the hot air baffle 3. At the same time, the first middle air outlet 61 is used as the main air outlet on one side of the lower part of the hot air baffle 3 (the side where the first middle air outlet 61 is located), thereby increasing the air outlet on the upper side of the hot air baffle 3, improving the effect of single-layer baking, especially the baking effect of the baking tray 13 placed on the third layer 93 of the side bracket 9 in single-layer baking. Preferably, the first middle air outlet 61 is formed by the side edge of the hot air baffle 3 being recessed inwards, so as to facilitate the processing and setting of the first middle air outlet 61 and increase the air volume of the first middle air outlet 61.

[0062] Furthermore, a second middle air outlet 62 is provided on the left side of the middle of the front of the hot air baffle 3. The opening height of the second middle air outlet 62 is lower than the height of the partition 11 and is located outside the left end of the partition 11. In this embodiment, there are two second middle air outlets 62 and they are arranged at intervals along the left and right directions of the hot air baffle 3. The appearance of each second middle air outlet 62 is long and extends along the up and down directions of the hot air baffle 3. The pressure difference of the outer ring of the hot air blower blade is small, and the mutual interference between the upper and lower hot air blowers 81 and 82 is small when they rotate. Therefore, the second middle air outlet 62 is provided on the outside of the partition 11, so that the hot air flow in the hot air chamber 30 can be fully blown out of the second middle air outlet 62. In this way, the second middle air outlet 62 serves as the main air outlet on the left front side of the lower part of the hot air baffle 3, meeting the heat requirement for single-layer baking, especially the third layer 93 of the side bracket 9. A third middle air outlet 63 is provided on the right side of the middle of the front of the hot air baffle 3. There are two third middle air outlets 63 and they are spaced apart along the left and right direction of the hot air baffle 3. The appearance of each third middle air outlet 63 is long and extends along the left and right direction of the hot air baffle 3. By providing the third middle air outlet 63 as the main air outlet on the right front side of the lower part of the hot air baffle 3, the heat requirement for single-layer baking, especially baking the third layer 93 of the side bracket 9, is met. In this embodiment, the third middle air outlet 63 is located below the above-mentioned partition 11 to avoid the interference of the rotation of the upper hot air blower 81 on the air outlet of the third middle air outlet 63, and at the same time, the hot air flow blown out of the third middle air outlet 63 can better reach the third layer 93 and the second layer 92 of the side bracket 9. In addition, a fourth middle air outlet hole 64 is opened on the front side of the hot air baffle 3 on the outside of the third middle air outlet hole 63. There are two fourth middle air outlet holes 64 and they are spaced apart along the left and right direction of the hot air baffle 3. The outer shape of each fourth middle air outlet hole 64 is long and extends along the up and down direction of the hot air baffle 3. In the present embodiment, each fourth middle air outlet hole 64 is located on the lower side of the right end portion of the above-mentioned partition 11. Since the fourth middle air outlet hole 64 is located on the outside of the hot air baffle 3, it is relatively less affected by the rotation of the hot air blower. The above arrangement can better avoid the partition 11 from blocking the airflow, thereby ensuring the air outlet at the fourth middle air outlet hole 64.

[0063] In this way, the lower hot air blower 82 rotates clockwise, and the airflow on the right side of the middle of the hot air chamber 30 moves to the third middle air outlet 63 under the action of the partition 11, and enters the inner pot 1 through the third middle air outlet 63. At the same time, the airflow on the right side of the middle of the hot air chamber 30 moves to the fourth middle air outlet 64 under the joint action of the partition 11 and the second right guide surface 102, and enters the inner pot 1 through the fourth middle air outlet 64, and the airflow on the left side of the middle of the hot air chamber 30 moves to the second middle air outlet 62 under the joint action of the partition 11 and the second left guide surface 102, and enters the inner pot 1 through the second middle air outlet 62. Among them, the second middle air outlet 62 is the main air outlet on the left front side of the lower part of the hot air baffle 3, and the third middle air outlet 63 and the fourth middle air outlet 64 are the main air outlets on the right front side of the lower part of the hot air baffle 3.

[0064] In addition, the upper and lower hot air blowers 81, 82 rotate clockwise, and the airflow on the left side of the middle part of the hot air chamber 30 moves to the first middle air outlet 61 under the joint action of the second guide surface 102 on the left and the partition 11, and enters the inner tank 1 through the first middle air outlet 61. Due to the position setting relationship between the first middle air outlet 61 and the partition 11, the first middle air outlet 61 is both the main air outlet on the left edge of the lower part of the hot air baffle 3 and the auxiliary air outlet on the upper part of the hot air baffle 3, which jointly adjust the air outlet volume of the upper and lower parts of the hot air baffle 3.

Claims

1. An inner pot structure of a cooking device, comprising an inner pot (1), wherein a hot air baffle (3) having an air inlet is arranged in the inner pot (1), a hot air chamber (30) is formed between the hot air baffle (3) and a back plate (12) of the inner pot (1), the air inlet comprising an upper air inlet (701) and a lower air inlet (702) and arranged at intervals along the middle of the hot air baffle (3), an upper hot air blower (81) and a lower hot air blower (82) corresponding to the hot air chamber (30) are installed, a partition (11) is horizontally installed on the back of the hot air baffle (3) at a middle position between the upper air inlet (701) and the lower air inlet (702), and the invention is characterized in that: A first middle air outlet hole (61) is provided on one side of the middle part of the hot air baffle (3); the installation height of the partition (11) is located at the middle and upper part of the height direction of the first middle air outlet hole (61); and the first middle air outlet hole (61) is located on the outer side of the end of the partition (11); A second middle air outlet hole (62) is provided in the middle of the front side of the hot air baffle (3) on the side where the first middle air outlet hole (61) is located, and the height of the second middle air outlet hole (62) is lower than the height of the partition (11); There is at least one second middle air outlet hole (62) and the second middle air outlet hole (62) is evenly spaced along the left and right directions of the hot air baffle (3); each second middle air outlet hole (62) is in the shape of a long strip and extends along the up and down directions of the hot air baffle (3); The second middle air outlet (62) is located below the outer side of the corresponding end of the partition (11); A third middle air outlet hole (63) is provided on the other side of the middle portion of the front side of the hot air baffle (3); There is at least one third middle air outlet hole (63) and the third middle air outlet hole (63) is arranged at intervals along the left and right directions of the hot air baffle (3); each third middle air outlet hole (63) is in the shape of a long strip and extends along the left and right directions of the hot air baffle (3); The third middle air outlet (63) is located below the partition (11); The upper and lower air inlets (701, 702) are both circular arrays formed by arranging air inlet holes, and the outer ends of the fan blades of the upper and lower hot air blowers (81, 82) are located at the periphery of the corresponding air inlets; The air inlet holes include first air inlet holes (71), and each first air inlet hole (71) is an arc-shaped strip hole concentric with the circular array; The air inlet holes also include circular second air inlet holes (72), a first air inlet ring (7a) is arranged at the center of the circular array with the center of the circular array as the center, the first air inlet ring (7a) is formed by the first air inlet holes (71) arranged evenly along the circumferential direction, and a second air inlet ring (7b) is concentrically arranged on the outer periphery of the first air inlet ring (7a), the second air inlet ring (7b) is formed by the second air inlet holes (72) arranged evenly along the circumferential direction, at least one third air inlet ring (7c) is concentrically arranged on the outer periphery of the second air inlet ring (7b), the third air inlet ring (7c) is formed by the second air inlet holes (72) arranged evenly along the circumferential direction, and the area of ​​the second air inlet holes (72) in each third air inlet ring (7c) increases from the inside to the outside, and one of the first air inlet holes (71) is respectively arranged between adjacent second air inlet holes (72) in each third air inlet ring.

2. The liner structure according to claim 1, characterized in that: The first middle air outlet hole (61) is formed by the side edge of the hot air baffle (3) being recessed inwards.

3. The liner structure according to claim 1, characterized in that: The hot air baffle (3) has a cover-like appearance, and a first top air outlet (41) is provided on one side of its top wall.

4. The liner structure according to claim 3, characterized in that: The first top air outlet hole (41) is in the shape of a long strip and extends in the left-right direction of the hot air baffle (3), and is formed by the top edge of the hot air baffle (3) being recessed inwards.

5. The liner structure according to claim 3, characterized in that: A second top air outlet (42) is provided at the upper end of the front side of the hot air baffle (3) below the first top air outlet (41).

6. The liner structure according to claim 5, characterized in that: There is at least one second top air outlet hole (42) which is evenly spaced along the left and right directions of the hot air baffle (3); each second top air outlet hole (42) is in the shape of an elongated strip and extends along the left and right directions of the hot air baffle (3).

7. The liner structure according to claim 3, characterized in that: The upper part of the hot air baffle (3) is provided with a first upper air outlet hole (51) on the side wall on the side where the first top air outlet hole (41) is located.

8. The liner structure according to claim 7, characterized in that: The first upper air outlet hole (51) is in the shape of an elongated strip and extends in the up-down direction of the hot air baffle plate (3), and is formed by the side edge of the hot air baffle plate (3) being recessed inwards.

9. The liner structure according to claim 7, characterized in that: A second upper air outlet hole (52) is provided on the inner side of the first upper air outlet hole (51) and on the front side of the hot air baffle plate (3) adjacent to the first upper air outlet hole (51).

10. The liner structure according to claim 9, characterized in that: There is at least one second upper air outlet hole (52) which is evenly spaced along the up-down direction of the hot air baffle (3); each second upper air outlet hole (52) is in the shape of an elongated strip and extends along the up-down direction of the hot air baffle (3).

11. The liner structure according to claim 5, characterized in that: A third top air outlet (43) is provided on the other side of the upper end of the front side of the hot air baffle (3).

12. The liner structure according to claim 11, characterized in that: There is at least one third top air outlet hole (43) and they are evenly spaced in the left-right direction and / or evenly spaced in the front-back direction of the hot air baffle (3). Each third top air outlet hole (43) is in the shape of an elongated strip and extends in the left-right direction of the hot air baffle (3).

13. The liner structure according to claim 1, characterized in that: The front side of the hot air baffle (3) is provided with a fourth middle air outlet hole (64) outside the third middle air outlet hole (63).

14. The liner structure according to claim 13, characterized in that: There is at least one fourth middle air outlet hole (64) which is evenly spaced along the left-right direction of the hot air baffle (3); each fourth middle air outlet hole (64) is in the shape of a long strip and extends along the up-down direction of the hot air baffle (3).

15. The liner structure according to claim 13, characterized in that: The fourth middle air outlet hole (64) is located below the outer side of the corresponding end of the partition plate (11).

16. The liner structure according to claim 3, characterized in that: A first bottom air outlet hole (32) is provided at the bottom of the hot air baffle (3), and the first bottom air outlet hole (32) and the first top air outlet hole (41) are staggered with each other along the left-right direction of the hot air baffle (3).

17. The liner structure according to claim 16, characterized in that: The first bottom air outlet hole (32) is provided on the bottom wall of the hot air baffle (3), and there is at least one first bottom air outlet hole (32) which is evenly spaced along the left and right directions of the hot air baffle (3), and each first bottom air outlet hole (32) is in the shape of an elongated strip and extends along the left and right directions of the hot air baffle (3).

18. The liner structure according to claim 17, characterized in that: A first lower air outlet (31) is provided on one side of the lower portion of the hot air baffle (3), and the movement trajectory of the outer end of the fan blade of the lower hot air blower (82) is from top to bottom at a height adjacent to the first lower air outlet (31).

19. The liner structure according to claim 18, characterized in that: The first lower air outlet hole (31) is formed on the side wall of the hot air baffle (3) and extends in the up-down direction of the hot air baffle (3).

20. The liner structure according to any one of claims 1 to 19, characterized in that: A guide surface (10) capable of guiding the airflow in the hot air chamber (30) to the corresponding air outlet hole is provided on the rear inner surface of the hot air chamber (30) at least at the position corresponding to each air outlet hole.

21. The liner structure according to claim 20, characterized in that: The guide surface (10) comprises a first guide surface (101) extending in the left-right direction of the hot air baffle (3) and a second guide surface (102) extending in the up-down direction of the hot air baffle (3), wherein the first guide surface (101) is inclined outward from top to bottom, and the inclination angle is 110° to 130°, and the second guide surface (102) is inclined inward from outside to inside, and the inclination angle is 110° to 130°.

22. The liner structure according to claim 21, characterized in that: The guide surface (10) is in the shape of a closed ring and is formed by the inner surface of the back plate (12) of the inner container (1) protruding outwards. The guide surface (10) is arranged opposite to the hot air baffle (3) and the sizes of the two are matched.

23. An oven having an inner container structure as claimed in any one of claims 1 to 22.

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