CN220505391U - A air heater and cooking device and integrated kitchen for cooking device - Google Patents

Abstract

The utility model relates to an air heater for a cooking device, a cooking device and an integrated stove, comprising an impeller, wherein the impeller comprises a base plate, first blades and second blades are vertically arranged on a first plate surface of the base plate respectively, the first blades are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate as the center, the second blades are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate as the center and are respectively positioned at the middle part between two adjacent first blades, each first blade and each second blade are arc-shaped along the length direction, the inner side end of each first blade is positioned on a first circle concentric with the base plate, the inner side end of each second blade is positioned on a second circle concentric with the base plate, the radius of the first circle is larger than that of the second circle, and each first blade and each second blade incline towards the rotation direction of the impeller from inside to outside along the length direction. The utility model can increase the air inlet of the impeller, ensure the smooth air outlet of the impeller, reduce the air loss in the air outlet process and finally realize the high air quantity of the impeller.

Description

A air heater and cooking device and integrated kitchen for cooking device

Technical Field

The utility model relates to the field of cooking devices, in particular to a hot air blower for a cooking device, the cooking device and an integrated stove.

Background

In a cooking device with a baking function, a hot air blower is generally arranged on an inner container, and the hot air blower is used as a power device for forming hot air circulation inside the inner container. For example, chinese patent application No. CN202310096320.0 (publication No. CN116350058 a) entitled "a cooking device with steaming and baking function" and chinese patent application No. ZL 202222583365.4 (grant notice No. CN218852444U entitled "a steaming and baking oven". In addition, the air heater may also cooperate with the air exhaust fan to drive the air in the inner container to be exhausted, for example, chinese patent No. ZL 202210040203.8 (grant publication No. CN114468792 a) entitled "an oven and air exhaust control method thereof". It can be seen that the performance of the air heater has an important influence on the cooking efficiency and the cooking effect of the cooking device, wherein the air quantity is one of important indexes for evaluating the performance of the air heater, however, the conventional air heater generally adopts straight-edge fan blades, so that the air quantity is generally smaller.

Further, the existing cooking devices generally have the problem of poor dehumidifying effect in the baking mode, so that the baking effect is affected, especially when food materials with large water content are cooked. In order to solve the problem, external cold air is generally blown into the inner container in a mode of arranging a blowing device, and the blown air presses moisture in the inner container, so that the moisture is strongly discharged. For example, chinese utility model patent No. ZL 20212240399. X (issued to CN 216307871U). Although the existing air blowing mode can solve the problems that the humidity in the inner container is too high in the baking mode and the residual air (such as hot air or hot steam) in the inner container is opened to directly spray the user when the cooking is finished, the additional addition of the air blowing device can increase the production cost of the cooking device and complicate the internal structure of the cooking device. In addition, the uniformity of the temperature field inside the inner container can be damaged by directly blowing external cold air into the inner container, and meanwhile, dishes after cooking can be cooled by directly blowing cold air into the inner container after cooking.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a hot air blower with large air quantity for a cooking device aiming at the prior art.

The second technical problem to be solved by the utility model is to provide a cooking device with the air heater aiming at the prior art.

The third technical problem to be solved by the utility model is to provide the cooking device with the hot air blower for the prior art, and the cooking device can realize the forced exhaust of the gas in the inner container without additionally arranging a blower device.

A fourth technical problem to be solved by the present utility model is to provide an integrated cooking range with the cooking device according to the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the hot air blower for the cooking device comprises an impeller, and is characterized in that the impeller comprises a circular base plate, a first blade and a second blade are respectively and vertically arranged on a first plate surface of the base plate, wherein the first blades are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate as the center, the second blades are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate as the center and are respectively positioned at the middle position between two adjacent first blades,

each first blade and each second blade are arc-shaped along the length direction, wherein the inner side end of each first blade is positioned on a first circle concentric with the base plate, the outer side end of each first blade is positioned on the edge of the base plate, the inner side end of each second blade is positioned on a second circle concentric with the base plate, the outer side end of each second blade is positioned on the edge of the base plate, the radius of the first circle is larger than that of the second circle, and each first blade and each second blade incline towards the rotation direction of the impeller from inside to outside along the length direction.

Further, the curvature of each first blade is greater than that of each second blade. Therefore, the air inlet flows are distributed through the first blades with larger curvatures, so that the air flows smoothly enter the gaps of the adjacent first blades, and the second blades with smaller curvatures are utilized to guide out the air flows, so that the smooth air outlet of the impeller is realized.

Further, the curvature of each first blade increases from inside to outside. Therefore, the gas can be better guided out from inside to outside by matching with the action of centrifugal force, and the smoothness of air outlet is further improved.

Further, the radius ratio of the first circle to the second circle is greater than 1.5 and less than 2.0. Therefore, on one hand, the air inlet of the impeller can be effectively increased, and on the other hand, the smooth outflow of air flow can be ensured.

Further, the inner edge of each first blade is inclined from inside to outside relative to the center of the circle of the substrate from the first plate surface of the substrate, and the outer edge is perpendicular to the first plate surface of the substrate. Thereby be favorable to leading into the intermittent type between the adjacent first blade with the air inlet air current, and can make the air-out air current regular outflow, avoid the amount of wind loss.

Further, the inner edge of each second blade is recessed from the first plate surface of the base plate to the center of the base plate from inside to outside to form an arc notch, and the outer edge of each second blade is perpendicular to the first plate surface of the base plate. Therefore, the air flow between the adjacent first blades can be better guided, and regular air outlet can be further ensured, so that the air quantity loss can be better avoided.

The technical scheme adopted for further solving the second technical problem is as follows: the cooking device comprises an inner container, and is characterized in that the hot air blower is arranged on a first side wall of the inner container, a hot air baffle is covered on the side where the first side wall is positioned in an inner cavity of the inner container to form a hot air chamber, the hot air baffle comprises a hot air inlet arranged in the center and hot air outlets arranged around the hot air inlet, and an impeller of the hot air blower is positioned in the hot air chamber and is opposite to the hot air inlet. In the working state of the air heater, the impeller rotates to drive the air flow in the inner container to move so as to form hot air circulation in the inner cavity of the inner container and the hot air chamber, thereby realizing hot air heating of food.

The technical scheme adopted for further solving the third technical problem is as follows: the first side wall is the rear side wall of the inner container, the rear side wall is provided with an air outlet positioned in the hot air chamber, the air outlet is positioned outside the horizontal projection of the impeller on the first side wall, the right side wall of the inner container is also provided with an air port with the height lower than that of the air outlet,

the air heater at least has a first rotating speed and a second rotating speed which is larger than the first rotating speed, the air heater rotates at the second rotating speed in a dehumidifying stage or a cooking end state of the baking mode, and the air vent is used for feeding outside air into the inner container. In the dehumidification stage of the baking mode or in the cooking end state, the hot air blower rotates at a second rotating speed, hot air is gathered at the exhaust port through high-speed rotation of the hot air blower, the air pressure at the exhaust port is greater than the atmospheric pressure, the hot air is discharged outside through the exhaust port, meanwhile, negative pressure is formed at the air port and is lower than the atmospheric pressure, and external air enters the inner container through the air port, so that strong moisture discharge in the baking mode or strong discharge of residual air in the inner container in the cooking end state is realized.

Further, in the dehumidifying stage or in the cooking end state of the baking mode, the second rotating speed of the air heater is 1700-2100 r/min, so that a double-path convection circulation effect is better formed.

Further, the distance between the air outlet and the upper end edge of the back side wall of the inner container is smaller than or equal to 1/3 of the height of the back side wall, hot air is facilitated to float upwards and gather at the air outlet, the distance between the air vent and the lower end edge of the right side wall of the inner container is smaller than or equal to 1/3 of the height of the right side wall, cold air is facilitated to sink at the air vent, and therefore when double-way convection circulation is formed, external air entering through the air vent can better extrude the hot air in the inner container to move towards the air outlet.

Further, the hot air outlet of the hot air baffle comprises a first hot air outlet arranged at the right lower corner of the hot air baffle, and the lowest position of the air vent is higher than the lowest position of the first hot air outlet. Thus, the air outlet air flow of the first hot air outlet can be converged with the external air entering the inner container from the air vent, so that the external air can enter the inner container more quickly.

The technical scheme adopted for further solving the fourth technical problem is as follows: an integrated cooktop characterized by comprising a cooking device as described above and a cooktop positioned over the cooking device.

Further, the kitchen range comprises a chassis with an upper opening and a panel covering the opening of the chassis, an exhaust window is arranged on the rear side of the panel, an exhaust box is covered on the lower surface of the panel at the position of the exhaust window, an air inlet and an air guide port are arranged on the bottom wall of the exhaust box at intervals, wherein the air inlet is in fluid communication with the air outlet, and the air guide port is in fluid communication with the air vent. In the dehumidification stage or the cooking end state of the baking mode, the air heater rotates at a second rotating speed, hot air is gathered at the exhaust port through the high-speed rotation of the air heater, the air pressure at the exhaust port is greater than the atmospheric pressure, and the hot air is discharged outside through the exhaust port and enters the exhaust box through the air inlet. At this time, the air guide port of the exhaust box forms negative pressure relative to the air inlet and is lower than the atmospheric pressure, so that external cold air enters the exhaust box through the air outlet of the exhaust box (namely the upper opening of the exhaust box), enters the inner container through the air guide port from the air vent on the inner container, extrudes the hot air flow in the inner container from bottom to top to the air outlet, and forms a double-way convection circulation effect in the inner container and the air chamber, thereby realizing strong moisture discharge in a baking mode or strong discharge of residual air in the inner container in a cooking end state.

Further, a heat dissipation channel for dissipating heat of the electric element which heats during working is arranged in the kitchen range, and an air inlet is formed in the side wall of the exhaust box and is in fluid communication with a heat dissipation outlet of the heat dissipation channel.

Compared with the prior art, the utility model has the advantages that: according to the impeller, the first blades and the second blades are respectively arranged on the first plate surface of the base plate of the impeller, and the second blades are respectively arranged in the middle between two adjacent first blades, so that air flow entering the impeller and flowing outwards under the action of centrifugal force can be combed and guided, the impeller can smoothly discharge air, and the air output of the impeller is ensured. And the inner side ends of the first blades and the inner side ends of the second blades are respectively positioned on the first circle and the second circle, and the radius of the first circle is larger than that of the second circle, so that the air intake of the impeller can be increased, the first blades and the second blades are arc-shaped along the length direction and incline towards the rotating direction of the impeller from inside to outside along the length direction, the air loss in the air outlet process can be reduced to the greatest extent, and the high air volume of the impeller is finally realized.

Drawings

FIG. 1 is a schematic view of an integrated kitchen range according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

FIG. 3 is a schematic view of a part of an integrated kitchen range (with a hot air baffle hidden) according to an embodiment of the present utility model;

FIG. 4 is a schematic view of another partial structure of the integrated cooker according to the embodiment of the utility model (in a state of hiding the panel of the cooker);

FIG. 5 is a schematic view of a structure of an exhaust box according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a impeller according to an embodiment of the present utility model;

fig. 7 is a schematic view of the structure of fig. 6 in another direction.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description of the present utility model, 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", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

As shown in fig. 1 to 7, an integrated cooking hob includes a cooking apparatus 1 and a hob 2 located above the cooking apparatus 1. The cooking device 1 comprises an inner container 10, a hot air baffle 11 is covered on the rear side of the inner cavity of the inner container 10 to form a hot air chamber, and a hot air blower 6 is arranged on the rear side wall of the inner container 10. The hot air baffle 11 includes a hot air inlet 111 provided at the center and a hot air outlet 112 provided around the hot air inlet 111, and the impeller 5 of the hot air blower 6 is located in the hot air chamber and is opposite to the hot air inlet 111. In the working state of the air heater 6, the impeller 5 rotates to drive the air flow in the inner container 10 to move so as to form hot air circulation in the inner cavity of the inner container 10 and the hot air chamber, thereby realizing hot air heating of food. The kitchen range 2 comprises a chassis 21 with an upper opening and a panel 22 covering the opening of the chassis 21, wherein an exhaust window 221 is arranged on the rear side of the panel 22, an exhaust cover plate 222 is covered on the exhaust window 221, and an exhaust box 8 is covered on the lower surface of the panel 22 along the left-right direction at the position of the exhaust window 221.

Further, the impeller 5 includes a circular base plate 50, a shaft hole 500 is formed at a center of the base plate 50, and a first blade 51 and a second blade 52 are vertically disposed on a first plate surface of the base plate 50, wherein the first blades 51 are circumferentially spaced about the center of the base plate 50, and the second blades 52 are circumferentially spaced about the center of the base plate 50 and are respectively located in a middle between two adjacent first blades 51. Each of the first blades 51 and each of the second blades 52 are curved in the longitudinal direction, wherein the inner side ends of each of the first blades 51 are located on a first circle 71 concentric with the base plate 50, the outer side ends of each of the second blades 52 are located on a second circle 72 concentric with the base plate 50, the outer side ends of each of the second blades 52 are located on the edge of the base plate 50, the radius of the first circle 71 is larger than that of the second circle 72, and each of the first blades 51 and each of the second blades 52 are inclined in the longitudinal direction from inside to outside in the rotation direction of the impeller 5.

As can be seen from the above, in the present utility model, the first plate surface of the base plate 50 is respectively provided with the first blade 51 and the second blade 52, wherein the second blade 52 is respectively disposed in the middle between two adjacent first blades 51, so that the air flow entering the impeller 5 and flowing outwards under the centrifugal force can be combed and guided, so that the impeller 5 can smoothly discharge air, and the air output of the impeller 5 is ensured. The inner ends of the first blades 51 and the second blades 52 are located on the first circle 71 and the second circle 72, respectively, and the radius of the first circle 71 is larger than that of the second circle 72, so that the air intake of the impeller 5 can be increased, and the first blades 51 and the second blades 52 are arc-shaped along the length direction and incline towards the rotation direction of the impeller 5 from inside to outside along the length direction, so that the air loss in the air outlet process can be reduced to the greatest extent, and finally the high air intake of the impeller 5 is realized.

Further, the curvature of each of the first blades 51 is greater than that of each of the second blades 52. In this way, the air inlet flow is distributed by each first blade 51 with larger curvature, so that the air flow smoothly enters the gap between the adjacent first blades 51, and the air flow is guided out by the second blade 52 with smaller curvature, so that the smooth air outlet of the impeller 5 is realized. Still further, the curvature of each of the first blades 51 increases from inside to outside. Therefore, the gas can be better guided out from inside to outside by matching with the action of centrifugal force, and the smoothness of air outlet is further improved. Preferably, the ratio of the radius of the first circle 71 to the second circle 72 is greater than 1.5 and less than 2.0. On the one hand, the air inlet quantity of the impeller 5 can be effectively increased, and on the other hand, the smooth outflow of air flow can be ensured.

Further, the inner edge of each of the first blades 51 is inclined from inside to outside with respect to the center of the first plate surface of the base plate 50, and the outer edge is perpendicular to the first plate surface of the base plate 50. Thereby being beneficial to guiding the inlet air flow into the intermittence between the adjacent first blades 51, and enabling the outlet air flow to flow out regularly, avoiding the air quantity loss. Meanwhile, the inner edge of each of the second blades 52 is recessed from the first plate surface of the base plate 50 to the center of the base plate 50 from inside to outside to form an arc-shaped notch 521, and the outer edge is perpendicular to the first plate surface of the base plate 50. So that the air flow between the adjacent first blades 51 can be better guided, and regular air outlet can be further ensured, thereby better avoiding air quantity loss.

Further, an air outlet 101 located in the hot air chamber is formed in the rear side wall of the inner container 10, and an air vent 102 having a lower height than the air outlet 101 is formed in the right side wall of the inner container 10 in addition to the horizontal projection of the air outlet 101 on the first side wall of the impeller 5. Meanwhile, the air heater 6 has at least a first rotation speed and a second rotation speed greater than the first rotation speed, and the air heater 6 rotates at the second rotation speed and the air vent 102 supplies the external air to the inner container 10 in the dehumidifying stage of the baking mode or in the cooking end state. In this way, in the moisture discharging stage or the cooking end state of the baking mode, the air heater 6 rotates at the second rotation speed, hot air is collected at the air outlet 101 through the high-speed rotation of the air heater 6, the air pressure at the air outlet 101 is greater than the atmospheric pressure, the hot air is discharged outside through the air outlet 101, meanwhile, the air outlet 102 forms negative pressure and is lower than the atmospheric pressure, and then the outside air enters the inner container 10 through the air outlet 102 to realize the strong moisture discharge in the baking mode or the strong discharge of residual air in the inner container 10 in the cooking end state. Therefore, the utility model can obtain the technical effect of blowing and exhausting by only designing the opening positions of the exhaust port 101 and the air port 102 on different side walls of the liner 10, the rotating speed (namely the air quantity) of the air heater 6, and the like without additionally arranging a blowing device at the air port 102. Preferably, the second rotation speed of the air heater 6 is 1700 r/min-2100 r/min in the dehumidifying stage or the cooking end state of the baking mode, which is beneficial to better realize the strong exhaust of the air in the inner container 10.

Further, the distance between the air outlet 101 and the upper edge of the back side wall of the liner 10 is less than or equal to 1/3 of the height of the back side wall, which is favorable for the hot air to float upwards and gather at the air outlet 101, while the distance between the air inlet 102 and the lower edge of the right side wall of the liner 10 is less than or equal to 1/3 of the height of the right side wall, which is favorable for the cold air to sink at the air inlet 102, so that the external air entering from the air inlet 102 can better squeeze the hot air in the liner 10 to move towards the air outlet 101 when the double-way convection circulation is formed. The hot air outlet 112 of the hot air baffle 11 includes a first hot air outlet 1121 formed in a right lower corner of the hot air baffle 11, and a lowest position of the air vent 102 is higher than a lowest position of the first hot air outlet 1121. Thus, the air flow from the first hot air outlet 112 can be converged with the external air entering the inner container 10 through the air port 102, so that the external air can enter the inner container 10 more quickly. Preferably, the first hot air outlet 1121 is formed by uniformly distributing elongated air outlet holes 1120 extending from left to right at intervals, so as to facilitate the convergence of the air outlet flow of the first hot air outlet 1121 and the air inlet flow of the air inlet 102.

Further, the bottom wall of the exhaust box 8 is provided with an air inlet 81 and an air guide 82 at a distance from each other in the left-right direction, wherein the air inlet 81 is in fluid communication with the exhaust port 101, and the air guide 82 is in fluid communication with the air vent 102. In this way, in the dehumidifying stage of the baking mode or in the cooking end state, the hot air blower 6 rotates at the second rotation speed, hot air is collected at the exhaust port 101 by the high-speed rotation of the hot air blower 6, the air pressure at the exhaust port 101 is greater than the atmospheric pressure, and the hot air is discharged through the exhaust port 101 and enters the exhaust box 8 through the air inlet 81. At this time, negative pressure is formed at the air guide port 82 of the air discharge box 8 relative to the air inlet 81 and lower than the atmospheric pressure, so that external cold air enters the air discharge box 8 through the air outlet 84 of the air discharge box 8 (i.e., the upper opening of the air discharge box 8), enters the inner container 10 through the air guide port 82 via the air vent 102 on the inner container 10, and extrudes the hot air flow in the inner container 10 from bottom to top toward the air outlet 101, thereby forming a double-way convection circulation effect in the inner container 10 and the air chamber, and realizing strong moisture discharge in the baking mode or strong discharge of residual air in the inner container 10 in the cooking end state. In this embodiment, the exhaust port 101 of the liner 10 communicates with the air inlet 81 through the exhaust pipe 3, and the air vent 101 communicates with the air guide port 82 through the air vent pipe 4, as shown in fig. 2.

Preferably, the kitchen range 2 is provided with a heat dissipation channel 23 for dissipating heat of an electric element which heats up during operation, and the front side wall of the exhaust box 8 is provided with an air inlet 83, and the air inlet 83 is in fluid communication with a heat dissipation outlet of the heat dissipation channel 23. In this way, the warm air in the heat dissipation channel 23 enters the exhaust box 8 and is partially mixed into the air flow of the air guide port 82, and enters the inner container 10 through the air port 102, so that the influence of the cold air directly entering the inner container 10 on the uniformity of the temperature field of the inner container 10 can be avoided. Preferably, the air inlet 83 includes a first air inlet 831 and a second air inlet 832, wherein the first air inlet 831 is opposite to the air inlet 81, the second air inlet 832 is opposite to the air guide 82, and the air inlet direction of the first air inlet 831 is upward, and the air inlet direction of the second air inlet 832 is downward. Thus, the air inlet flow of the first air inlet 831 can promote the air inlet flow of the air inlet 81 to flow towards the direction of the air outlet window 221, so as to accelerate the air outlet speed of the air outlet 101, while the air inlet flow of the second air inlet 832 can mix with the air outlet flow of the air guide 82 from top to bottom to improve the flow speed thereof, so as to accelerate the air inlet speed of the air inlet 102, thereby improving the double-way convection circulation effect and the strong air outlet effect on the liner 10.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, and may be directly communicated between the first part and the second part, or may be indirectly communicated between the first part and the second part through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, or the like, or may be a chamber allowing a fluid to flow through, or a combination of the above.

Claims (14)

1. An air heater for a cooking device comprises an impeller (5), and is characterized in that the impeller (5) comprises a circular base plate (50), a first blade (51) and a second blade (52) are vertically arranged on a first plate surface of the base plate (50), wherein the first blades (51) are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate (50) as the center, the second blades (52) are uniformly arranged at intervals along the circumferential direction by taking the center of the base plate (50) as the center and are respectively positioned at the middle part between two adjacent first blades (51),

each first blade (51) and each second blade (52) are arc-shaped along the length direction, wherein the inner side end of each first blade (51) is located on a first circle (71) concentric with the base plate (50), the outer side end of each second blade (52) is located on the edge of the base plate (50), the inner side end of each second blade (52) is located on a second circle (72) concentric with the base plate (50), the outer side end of each second blade is located on the edge of the base plate (50), the radius of the first circle (71) is larger than that of the second circle (72), and each first blade (51) and each second blade (52) incline towards the rotation direction of the impeller (5) from inside to outside along the length direction.

2. A hot air blower for a cooking appliance according to claim 1, wherein each of the first vanes (51) has a greater curvature than each of the second vanes (52).

3. A hot air blower for a cooking appliance according to claim 2, wherein the curvature of each of the first vanes (51) increases from inside to outside.

4. A hot air blower for a cooking device according to claim 1, characterized in that the ratio of the radius of the first circle (71) to the second circle (72) is greater than 1.5 and less than 2.0.

5. A hot air blower for a cooking appliance according to any one of claims 1-4, wherein the inner end edges of each of the first blades (51) are inclined from inside to outside with respect to the center of the base plate (50) from the first plate surface of the base plate (50), respectively, and the outer end edges are perpendicular to the first plate surface of the base plate (50), respectively.

6. A hot air blower for a cooking appliance according to any one of claims 1-4, wherein each of the second blades (52) has an inner edge recessed from the first plate surface of the base plate (50) to the center of the base plate (50) from inside to outside to form an arc-shaped notch (521), and an outer edge perpendicular to the first plate surface of the base plate (50).

7. A cooking device comprising an inner container (10), wherein a first side wall of the inner container (10) is provided with a hot air blower (6) according to any one of claims 1 to 6, a hot air baffle (11) is covered on the side where the first side wall is located in an inner cavity of the inner container (10) to form a hot air chamber, the hot air baffle (11) comprises a hot air inlet (111) arranged in the center and hot air outlets (112) arranged around the hot air inlet (111), and an impeller (5) of the hot air blower (6) is positioned in the hot air chamber and is opposite to the hot air inlet (111).

8. The cooking device according to claim 7, wherein the first side wall is a rear side wall of the inner container (10), an exhaust port (101) located in the hot air chamber is formed in the rear side wall, the exhaust port (101) is located in addition to the horizontal projection of the impeller (5) on the first side wall, a vent (102) with a lower height than the exhaust port (101) is formed in the right side wall of the inner container (10),

the air heater (6) has at least a first rotation speed and a second rotation speed which is larger than the first rotation speed, the air heater (6) rotates at the second rotation speed in a dehumidifying stage or a cooking end state of the baking mode, and the air port (102) is used for feeding outside air into the inner container (10).

9. Cooking device according to claim 8, wherein the second rotational speed of the air heater (6) is 1700-2100 r/min in the dehumidifying phase of the baking mode or in the end of cooking.

10. Cooking device according to claim 8, wherein the distance between the air outlet (101) and the upper edge of the back side wall of the inner container (10) is less than or equal to 1/3 of the height of the back side wall, and the distance between the air outlet (102) and the lower edge of the right side wall of the inner container (10) is less than or equal to 1/3 of the height of the right side wall.

11. The cooking device according to claim 10, wherein the hot air outlet (112) of the hot air baffle (11) comprises a first hot air outlet (1121) formed at a right lower corner of the hot air baffle (11), and the lowest position of the air vent (102) is higher than the lowest position of the first hot air outlet (1121).

12. An integrated hob, characterized in, that it comprises a cooking device according to any one of the claims 8 to 11 and a hob (2) located above the cooking device (1).

13. The integrated cooking range according to claim 12, characterized in that the cooking range (2) comprises a chassis (21) with an upper opening and a panel (22) covering the opening of the chassis (21), the rear side of the panel (22) is provided with an exhaust window (221), the lower surface of the panel (22) is covered with an exhaust box (8) at the exhaust window (221), the bottom wall of the exhaust box (8) is provided with an air inlet (81) and an air guide opening (82) at intervals, wherein the air inlet (81) is in fluid communication with the air outlet (101), and the air guide opening (82) is in fluid communication with the air vent (102).

14. The integrated kitchen range according to claim 13, characterized in that the kitchen range (2) is provided with a heat dissipation channel (23) for dissipating heat from an electrical component that heats up during operation, and the side wall of the exhaust box (8) is provided with an air inlet (83), and the air inlet (83) is in fluid communication with a heat dissipation outlet of the heat dissipation channel (23).