Cooking apparatus

Abstract

This utility model discloses a cooking device, including a cooking chamber and a heating assembly. The cooking chamber is hollow, forming a cooking cavity. The cooking chamber includes a first side plate with an opening and a mounting side plate. The mounting side plate is opposite to or connected to the first side plate. Multiple air outlets and a central air inlet are located on the mounting side plate, with all air outlets distributed around the air inlet. The heating assembly is located on the outside of the cooking chamber and includes a heating cover, a heating element, a first impeller, and a second impeller. The heating cover is connected to the mounting side plate to form the heating cavity. Both the first and second impellers are rotatably mounted within the heating cavity. The first impeller faces the air inlet, and the second impeller faces the air outlet. The heating element is positioned in the air outlet direction of the first impeller, which is parallel to a first direction. The air outlet direction of the second impeller forms an angle α with the second direction, where 0 ≤ α < 60°. This utility model's cooking device has low air resistance, fast speed, and uniform heating.

Description

Technical Field

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

[0002] Ovens and other cooking equipment use hot air to heat food. These types of hot air cooking equipment generally have heating elements (such as metal electric heating tubes, light wave tubes, etc.) arranged around the fan blades. When the fan blades rotate, the airflow blows over the surrounding heating elements, carrying away the local heat of the heating elements and turning it into a high-temperature airflow. The high-temperature airflow then enters the cavity where the food is located through the air outlet, making direct contact with the food and heating it until the food reaches an edible state.

[0003] The existing cooking equipment has a cooking chamber inside and a heating chamber at the rear. The cooking chamber and the heating chamber are separated by a metal plate at the rear of the cooking chamber. This metal plate has air inlets and outlets, allowing the two chambers to communicate. A fan blade is installed in the heating chamber, positioned directly opposite the air inlet. This fan blade draws air from the cooking chamber into the heating chamber. Heating elements around the fan blades heat the airflow, creating a high-temperature airflow. This high-temperature airflow, under the centrifugal force of the fan blades, returns to the cooking chamber through the outlet, circulating and heating the food. Existing cooking equipment has the following drawbacks: the air inlet is generally located in the middle of the metal plate, and the fan blades blow the airflow horizontally from the middle to the surrounding area. Under the constraint of the heating chamber wall, the airflow enters the cooking chamber along the air outlet. Since the airflow angle is distributed from the center to the surrounding area, after entering the cooking chamber, the airflow will again be constrained by the chamber wall and wrap around the food. During this process, the airflow is subject to greater wind resistance. Especially when there is a lot of food in the cooking chamber, it is difficult for the high-temperature airflow to circulate quickly and evenly in the cooking chamber, which can easily lead to problems such as local overcooking or undercooking of food. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a cooking device with low hot air resistance, fast circulation speed, uniform heating and high heating efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A cooking device is provided, comprising:

[0007] A cooking cabinet has a hollow interior forming a cooking chamber. The cooking cabinet has a first side panel with an opening communicating with the cooking chamber. A door is provided at the opening. The cooking cabinet also has a mounting side panel that is directly opposite to or connected to the first side panel. An air inlet is provided at the center of the mounting side panel, and multiple air outlets are provided on the mounting side panel. All the air outlets are distributed in a rectangular or ring shape around the air inlet.

[0008] A heating assembly is disposed on the outside of the cooking cabinet. The heating assembly includes a heating cover, a heating element, a first fan, and a second fan. The heating cover is connected to the mounting side plate, forming a heating chamber between the heating cover and the mounting side plate. Both the first and second fan wheels are rotatably disposed within the heating chamber. The first fan wheel is directly opposite the air inlet. The number of second fan wheels is the same as the number of air outlets, and their positions correspond one-to-one. The heating element is disposed in the air outlet direction of the first fan wheel. The air outlet direction of the first fan wheel is parallel to a first direction, and the air outlet direction of the second fan wheel forms an angle α with a second direction, where 0 ≤ α < 60°. The first direction is parallel to the mounting side plate, and the second direction is perpendicular to the mounting side plate.

[0009] As a preferred embodiment of the cooking equipment, the mounting side panel is rectangular, and the air vents are provided at least at the four corners adjacent to the mounting side panel.

[0010] As a preferred embodiment of the cooking device, the first impeller includes at least two sub-impellers, and the air inlet includes a number of sub-air holes that are the same as the number of sub-impellers, with the sub-impellers and the sub-air holes corresponding one-to-one in position;

[0011] All of the aforementioned sub-rotors are arranged in a straight line along the vertical or horizontal direction; or,

[0012] All of the sub-wind rotors are arranged in a ring around the center of the mounting side plate.

[0013] As a preferred embodiment of the cooking equipment, the cooking cabinet includes a second side plate directly opposite the first side plate, and the first side plate and the second side plate are connected by a connecting cylinder.

[0014] The mounting side plate is the second side plate; or, the connecting cylinder has a rectangular cross-section, and the connecting cylinder includes a third side plate, a fourth side plate, a fifth side plate, and a sixth side plate connected in sequence, and the mounting side plate is the third side plate, the fourth side plate, the fifth side plate, or the sixth side plate.

[0015] As a preferred embodiment of cooking equipment, the cross-sectional area of ​​the air inlet is larger than the cross-sectional area of ​​a single air outlet.

[0016] As a preferred embodiment of the cooking equipment, the heating component further includes a first motor and a second motor, wherein the first motor is driven to the first impeller and the second motor is driven to the second impeller.

[0017] As a preferred embodiment of the cooking equipment, the heating assembly further includes a heat insulation plate and a heat insulation layer. The heat insulation plate is disposed on the side of the heating cover plate away from the mounting side plate, and the heat insulation layer is disposed between the heat insulation plate and the heating cover plate. The first motor and the second motor are both disposed on the side of the heat insulation plate away from the heat insulation layer.

[0018] As a preferred embodiment of the cooking device, the first impeller includes a first connecting portion and a plurality of first blades surrounding the periphery of the first connecting portion. The first blades include a first body and a flange. The first body is parallel to the mounting side plate, and the flange is set at an angle to the first body. The flange is located on one side of the first body along the rotation direction of the first impeller.

[0019] As a preferred embodiment of the cooking device, the heating element is arranged in a ring around the outer periphery of the first impeller, and the heating element is located between the first impeller and the second impeller.

[0020] As a preferred embodiment of the cooking device, the heating cover includes a first connecting plate, the first connecting plate protruding towards the side away from the mounting side plate to form a first protrusion, and a first groove formed on the side of the first connecting plate facing the mounting side plate corresponding to the position of the first protrusion. The first connecting plate and the mounting side plate are detachably connected, and a sealing ring is provided between them.

[0021] The beneficial effects of this utility model are as follows: By arranging the air inlet at the center of the mounting side plate and distributing all the air outlets in a rectangular or annular manner around the air inlet, the hot air circulation can cover more areas from the center to the periphery, improving the uniformity of the hot air. In addition, a second impeller is set for each air outlet. The first impeller draws hot air from the cooking chamber through the air inlet and then enters the heating chamber. The hot air is then radially transported along the first impeller to heat the heating device. Under the enhanced transport action of the second impeller, the heated hot air not only has its direction forcibly changed, but its transport speed is also increased. The second impeller directs the hot air at an angle close to direct airflow back into the cooking chamber, increasing the speed of the hot air and reducing the wind resistance during the circulation process, so that the food in the cooking chamber can be heated efficiently and evenly. Attached Figure Description

[0022] Figure 1This is an exploded view of a cooking device according to an embodiment of the present invention (rear panel not shown).

[0023] Figure 2 This is a perspective view of a cooking device according to an embodiment of the present invention (the door is not shown).

[0024] Figure 3 for Figure 2 Front view diagram.

[0025] Figure 4 for Figure 2 Front view schematic diagram (partial sectional view).

[0026] Figure 5 This is a front view schematic diagram of the first impeller of a cooking device according to an embodiment of the present invention.

[0027] Figure 6 This is a top view of the first impeller of a cooking device according to an embodiment of the present invention.

[0028] Figure 7 This is a front view schematic diagram of the second impeller of a cooking device according to an embodiment of the present invention.

[0029] Figure 8 This is a top view of the second impeller of a cooking device according to an embodiment of the present invention.

[0030] Figure 9 This is a cross-sectional schematic diagram of a cooking device according to an embodiment of the present invention.

[0031] Figure 10 This is a front view schematic diagram of a cooking device according to another embodiment of the present invention (the door is not shown).

[0032] In the picture:

[0033] 1. Cooking cabinet body; 11. Cooking chamber; 12. First side panel; 13. Cabinet door; 14. Second side panel; 141. Air inlet; 1410. Sub-air vent; 1411. First through hole; 142. Air outlet; 1421. Second through hole; 15. Connecting cylinder; 151. Third side panel; 152. Fourth side panel; 153. Fifth side panel; 154. Sixth side panel; 16. Rear panel;

[0034] 2. Heating assembly; 21. Heating cover plate; 211. First connecting plate; 212. First protrusion; 213. First groove; 214. Receiving groove; 22. Heating device; 23. First impeller; 230. Sub-impeller; 231. First connecting part; 232. First blade; 2321. First body; 2322. Flanged edge; 233. Reinforcing protrusion; 234. Connecting protrusion; 24. Second impeller; 241. Second connecting part; 242. Second blade; 25. Heating chamber; 26. Heat insulation plate; 261. Second connecting plate; 262. Second protrusion; 263. Second groove; 27. Heat insulation layer; 28. First motor; 29. ​​Second motor;

[0035] 100. Baking pan. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] Reference Figures 1 to 3 As shown, the cooking device of this utility model embodiment is a hot air functional cooking device, that is, it generates hot air by heating airflow and uses the hot air to bake food. Such cooking devices can be ovens, air fryers, etc. The cooking device of this utility model embodiment includes a cooking chamber 1 and a heating component 2. The cooking chamber 1 is hollow inside to form a cooking chamber 11. The cooking chamber 1 has a first side plate 12 with an opening communicating with the cooking chamber 11. A door 13 is provided at the opening. The cooking chamber 1 has a mounting side plate, which is opposite to or connected to the first side plate 12. An air inlet 141 is opened in the center of the mounting side plate, and multiple air outlets 142 are opened on the mounting side plate. All the air outlets 142 are distributed in a rectangular or ring shape around the air inlet 141. The heating component 2 is located on the outside of the cooking chamber 1. The heating component 2 includes a heating cover plate 21 and heating elements. 22. A first impeller 23 and a second impeller 24 are connected to a heating cover plate 21, which is connected to a mounting side plate. A heating chamber 25 is formed between the heating cover plate 21 and the mounting side plate. The first impeller 23 and the second impeller 24 are rotatably disposed in the heating chamber 25. The first impeller 23 is directly opposite the air inlet 141. The number of second impellers 24 is the same as the number of air outlets 142, and their positions correspond one-to-one. The heating device 22 is disposed in the air outlet direction of the first impeller 23. The air outlet direction of the first impeller 23 is parallel to the first direction. The air outlet direction of the second impeller 24 forms an angle α with the second direction, where 0≤α<60°. The first direction is parallel to the mounting side plate, and the second direction is perpendicular to the mounting side plate.

[0041] The cooking device of this utility model has an air inlet 141 arranged in the center of the mounting side plate, and all the air outlets 142 distributed in a rectangular or ring manner on the outer periphery of the air inlet 141. This allows the hot air circulation to cover more areas from the center to the surrounding areas, forming a spatial effect where hot air surrounds the food in the center of the cooking chamber 11, thereby improving the uniformity of the hot air acting on the food.

[0042] In addition, the air outlet direction of the second impeller 24 is at an angle α to the second direction, where α is an acute angle or 0°. When α is 0°, the second impeller 24 is in direct blowing mode. When α is an acute angle less than 60°, the second impeller 24 is in close direct blowing mode. Direct blowing mode means that the air outlet angle of the second impeller 24 is parallel to the second direction (i.e., the direction perpendicular to the mounting side plate).

[0043] In this embodiment, the cooking device is equipped with a second impeller 24 for each air outlet 142. The first impeller 23 draws hot air from the cooking chamber 11 through the air inlet 141 and enters the heating chamber 25. Then, the hot air is conveyed along the radial direction (i.e., the first direction) of the first impeller 23 to heat the heating device 22. Under the enhanced conveying action of the second impeller 24, the heated hot air not only forces a change in the direction of the hot air, but also increases the conveying speed of the hot air. The second impeller 24 directs the hot air at an angle close to direct blowing back into the cooking chamber 11, thereby increasing the speed of the hot air and reducing the wind resistance of the hot air during the circulation process. This makes the food in the cooking chamber 11 heat up efficiently and evenly.

[0044] like Figures 1 to 4 , Figure 9 As shown, in one embodiment of this utility model, the cooking chamber 1 includes a second side plate 14 directly opposite the first side plate 12, and the first side plate 12 and the second side plate 14 are connected by a connecting cylinder 15; wherein, the mounting side plate is the second side plate 14. The first side plate 12 is provided with an opening and a door 13 for food to enter and exit the cooking chamber 11, while the air outlet 142 and air inlet 141 of the circulating hot air are provided on the second side plate 14, which can avoid the hot air circulation being restricted by the opening and the door 13, and the hot air convection effect will be better.

[0045] In this embodiment, the connecting cylinder 15 has a rectangular cross-section and includes a third side plate 151, a fourth side plate 152, a fifth side plate 153, and a sixth side plate 154 connected sequentially. The second side plate 14 is rectangular, and its four sides are connected to the third side plate 151, the fourth side plate 152, the fifth side plate 153, and the sixth side plate 154, respectively. The rectangular cross-section of the connecting cylinder 15 makes the entire cooking cabinet 1 a hexahedral structure, which can hold more food. In other embodiments, the cross-section of the connecting cylinder 15 is not limited to being rectangular; it can also be circular, pentagonal, hexagonal, or other structures.

[0046] Furthermore, such as Figure 2 , Figure 3 and Figure 4 As shown, an air inlet 141 is provided at the center of the second side plate 14, and an air outlet 142 is provided at each of the four corners adjacent to the second side plate 14. The four air outlets 142 are rectangularly distributed around the air inlet 141. This design facilitates the effective envelopment of the food in the center of the cooking chamber 11 by hot air from all sides, improving the uniformity of heating of the food. Furthermore, each of the four air outlets 142 is equipped with a second impeller 24, which delivers the heated air from the heating chamber 25 directly or nearly directly into the cooking chamber 11, increasing the hot air circulation speed and accelerating the cooking of the food. In other embodiments, the air outlets 142 are not limited to being distributed in a rectangular manner around the air inlet 141; they can also be distributed in a ring-shaped even distribution around the air inlet 141. In addition, the number of air outlets 142 is not limited to four; it can also be two, three, five, or more. When there are two air outlets 142, the two air outlets 142 can be arranged horizontally or vertically in a row with the air inlet 141, and the two air outlets 142 are symmetrically arranged on both sides of the air inlet 141. When there are three air outlets 142, the three air outlets 142 can be arranged in an equilateral triangle or an isosceles triangle, and the air inlet 141 is located at the center of the equilateral triangle or the isosceles triangle.

[0047] The following explanation uses the example of four air outlets 142 arranged in a rectangular pattern around the outer periphery of the air inlet 141.

[0048] In this embodiment, the cross-sectional area of ​​the central air inlet 141 is larger than the cross-sectional area of ​​a single air outlet 142. Since the air inlet 141 is centrally located and smooth circulation needs to be ensured, when the number of air outlets 142 is greater than the number of air inlets 141, the cross-sectional area of ​​the air inlet 141 needs to be made larger than the cross-sectional area of ​​a single air outlet 142 to avoid poor circulation.

[0049] like Figure 3 As shown, the air inlet 141 is composed of a plurality of first through holes 1411, all of which are evenly distributed within the area where the air inlet 141 is located. The shape of the first through holes 1411 can be circular, square, triangular, polygonal, or irregular. The arrangement and specific shape of the first through holes 1411 are not limited here, as long as they can allow hot air to pass through. Of course, in other embodiments, the air inlet 141 is not limited to being set as a plurality of first through holes 1411; it can also be a structure with a large hole directly in the air inlet 141.

[0050] Each air outlet 142 is composed of several second through holes 1421, all of which are evenly distributed within the area where the air outlet 142 is located. The shape of the second through holes 1421 can be circular, square, triangular, polygonal, or irregular. The arrangement and specific shape of the second through holes 1421 are not limited here, as long as they can allow hot air to pass through. Of course, in other embodiments, it is not limited to setting the air outlet 142 in the shape of several second through holes 1421; the air outlet 142 can also be directly formed with a large hole.

[0051] like Figure 1 and Figure 9 As shown, the heating assembly 2 also includes a first motor 28 and a second motor 29. The first motor 28 is driven by the first impeller 23, and the second motor 29 is driven by the second impeller 24. By connecting the first impeller 23 and the second impeller 24 to a motor respectively, the first impeller 23 and the second impeller 24 can be controlled independently or in conjunction. If the first impeller 23 and the second impeller 24 are selected to be controlled independently, an independent control mode between the first impeller 23 and the second impeller 24 can be achieved. When cooking a small amount of food, the efficiency requirement for hot air is not high. The first motor 28 can be stopped, and only the second motor 29 (i.e., only the second impeller 24) can be started, which can still achieve good hot air circulation and reduce energy consumption. When the first impeller 23 and the second impeller 24 are selected to be controlled in conjunction, the first motor 28 and the second motor 29 can be controlled simultaneously, which can save the cost of the control circuit.

[0052] In this embodiment, the heating assembly 2 further includes a heat insulation plate 26 and a heat insulation layer 27. The heat insulation plate 26 is disposed on the side of the heating cover plate 21 away from the second side plate 14 (i.e., the mounting side plate). The heat insulation layer 27 is disposed between the heat insulation plate 26 and the heating cover plate 21. The first motor 28 and the second motor 29 are both disposed on the side of the heat insulation plate 26 away from the heat insulation layer 27. By setting the heat insulation plate 26 and the heat insulation layer 27, the heat insulation plate 26 can provide support for the installation of the first motor 28 and the second motor 29, while the heat insulation layer 27 can isolate the heat of the heating chamber 25 from the first motor 28 and the second motor 29, preventing the first motor 28 and the second motor 29 from being heated for a long time or from being overheated and malfunctioning. Moreover, the setting of the heat insulation layer 27 can also prevent the heat of the heating chamber 25 from dissipating towards the side away from the cooking chamber 11, and conduct heat towards the side where the cooking chamber 11 is located as much as possible to reduce energy consumption.

[0053] Specifically, the insulation layer 27 is made of insulation cotton. The insulation cotton has good heat retention and is lightweight, which can prevent excessive increase in the overall weight of the cooking equipment. The two sides of the insulation cotton in the thickness direction can respectively press against the insulation plate 26 and the heating cover plate 21, which not only has a heat insulation effect, but also cushions the heating cover plate 21 and the insulation plate 26, reducing the chance of deformation of the heating cover plate 21 and the insulation plate 26.

[0054] like Figure 1 As shown, the heating cover plate 21 includes a first connecting plate 211. The first connecting plate 211 protrudes towards the side away from the second side plate 14 (i.e., the mounting side plate) to form a first protrusion 212. A first groove 213 is formed on the side of the first connecting plate 211 facing the second side plate 14, corresponding to the position of the first protrusion 212. The first connecting plate 211 and the second side plate 14 are detachably connected, and a sealing ring (not shown in the figure) is provided between them. The first protrusion 212 allows the heating cover plate 21 to form the first groove 213. After the heating cover plate 21 and the second side plate 14 are connected, a sufficiently large heating chamber 25 can be formed between them. This design can reduce the overall thickness of the heating cover plate 21. Preferably, the first protrusion 212 is integrally stamped on the first connecting plate 211. The stamping method can effectively reduce the manufacturing difficulty, and the first protrusion 212 can also increase the strength of the heating cover plate 21. In other embodiments, the first connecting plate 211 is not limited to being stamped to form the first protrusion 212; the heating cover plate 21 with the first protrusion 212 and the first groove 213 can also be formed by welding, injection molding, or other methods. Preferably, the heating cover plate 21 is a metal plate, such as a stainless steel plate or an aluminum alloy plate.

[0055] A ring-shaped receiving groove 214 is provided around the opening of the first groove 213 on the side of the first connecting plate 211 facing the second side plate 14. The sealing ring is fitted into this receiving groove 214, and the sealing ring portion protrudes from the opening of the receiving groove 214 and abuts against the second side plate 14. The receiving groove 214 facilitates the installation of the sealing ring and prevents the sealing ring from shifting during use and causing sealing failure. The number of receiving grooves 214 is not limited to one ring; two or more rings can be provided as needed. When there are two or more receiving grooves 214, a sealing ring is provided in each receiving groove 214, and all receiving grooves 214 are spaced apart and concentrically arranged.

[0056] like Figure 1As shown, the heat insulation plate 26 includes a second connecting plate 261. The second connecting plate 261 protrudes towards the side away from the heating cover plate 21 to form a second protrusion 262. A second groove 263 is formed on the side of the second connecting plate 261 facing the heating cover plate 21, corresponding to the position of the second protrusion 262. The second connecting plate 261 is detachably connected to the first connecting plate 211. The first protrusion 212 is inserted into the second protrusion 262, and the heat insulation layer 27 is pressed against the bottom of the groove between the first protrusion 212 and the second groove 263. The provision of the second protrusion 262 allows the heat insulation plate 26 to form the second groove 263. After the heat insulation plate 26 is connected to the heating cover plate 21, a space is formed between them to accommodate the first protrusion 212 and the heat insulation layer 27. This design can reduce the overall thickness of the heat insulation plate 26. Preferably, the second protrusion 262 is formed by stamping on the second connecting plate 261. Stamping effectively reduces manufacturing difficulty, and the second protrusion 262 also increases the strength of the heat insulation plate 26. In other embodiments, the second protrusion 262 is not limited to being formed by stamping the second connecting plate 261; the structure of the heat insulation plate 26 with the second protrusion 262 and the second groove 263 can also be formed by welding, injection molding, etc. Preferably, the heat insulation plate 26 is a metal plate, such as a stainless steel plate or an aluminum alloy plate.

[0057] The second side plate 14 has a third protrusion protruding from its center towards the side away from the cooking chamber 11. A third groove is formed on the side of the second side plate 14 near the cooking chamber 11, corresponding to the position of the third protrusion. An air inlet 141 is located at the bottom of the third groove. Near the four corners of the second side plate 14, a fourth protrusion protrudes towards the side away from the cooking chamber 11. A fourth groove is formed on the side of the second side plate 14 near the position of the fourth protrusion, corresponding to the position of the fourth protrusion. An air outlet 142 is located at the bottom of the fourth groove. Preferably, both the third and fourth protrusions are circular. Further, the dimensions of the second side plate 14 are 415mm * 235mm, the radius of the third protrusion is 80mm, and the height is 5mm. The radius of the fourth protrusion is 50mm, and the height is 5mm. The center-to-center distance between the fourth and third protrusions is 150mm. Preferably, a plurality of first through holes 1411 forming the air inlet 141 are distributed throughout the bottom of the third groove, and a plurality of second through holes 1421 forming the air outlet 142 are distributed throughout the bottom of the fourth groove.

[0058] like Figure 5 and Figure 6 (See attached document) Figures 1 to 4As shown in the figure, the arrows indicate the direction of hot air flow. The first impeller 23 includes a first connecting portion 231 and several first blades 232 surrounding the first connecting portion 231. The first connecting portion 231 is used for transmission connection with the output end of the first motor 28. The first blades 232 include a first body 2321 and a flange 2322. The first body 2321 is parallel to the second side plate 14 (i.e., the mounting side plate), and the flange 2322 is set at an angle to the first body 2321. The flange 2322 is located on one side of the first body 2321 along the rotation direction of the first impeller 23. By setting the flange 2322 at an angle to the first body 2321, the flange 2322 can change the direction of the hot air drawn in by the first impeller 23 in the second direction and send it out radially (i.e., in the first direction) from the second impeller 24 to the position where the second impeller 24 is located, so that the hot air can be smoothly heated by the heating device 22. In this embodiment, the first body 2321 is parallel to the second side plate 14, and the flange 2322 is perpendicular to the first body 2321. A channel for conveying hot air is formed between two adjacent flanges 2322. Preferably, the first connecting part 231, the first body 2321, and the flange 2322 are integrally formed by stamping sheet metal. More preferably, the first impeller 23 is made of stainless steel. The first impeller 23 can be made not only of stainless steel but also of other metals or hard plastics, such as aluminum alloy.

[0059] Eight first blades 232 are arranged in a ring around the periphery of the first connecting portion 231. Each first blade 232 has a reinforcing protrusion 233 stamped along its thickness direction (i.e., the second direction) on its first body 2321. Adjacent reinforcing protrusions 233 are connected by connecting protrusions 234 located on the first connecting portion 231. By providing the stamped reinforcing protrusions 233, the strength of the first blade 232 is increased, preventing deformation. Furthermore, the connection of all reinforcing protrusions 233 to the connecting protrusions 234, located on the first connecting portion 231, also increases the strength of the first connecting portion 231.

[0060] like Figure 7 and Figure 8 (See attached document) Figures 1 to 4 As shown in the figure, the arrows indicate the direction of hot air flow. The second impeller 24 includes a second connecting part 241 and several second blades 242 surrounding the second connecting part 241. The second connecting part 241 is used for transmission connection with the output end of the second motor 29. The second blades 242 are arc-shaped. With the plane of the second side plate 14 as the reference, when the second impeller 24 rotates counterclockwise, the front position of the second blades 242 is arc-shaped downward and the rear position is arc-shaped upward.

[0061] The second connecting part 241 has five second blades 242 arranged in a ring around its periphery. The second connecting part 241 and the second blades 242 are integrally formed by stamping sheet metal. More preferably, the second impeller 24 is made of stainless steel. The second impeller 24 can be made of other metals or hard plastics, such as aluminum alloy, in addition to stainless steel.

[0062] like Figure 9 As shown, in order to avoid the first motor 28 and the second motor 29 being exposed, a rear plate 16 is detachably installed on the side of the heat insulation plate 26 away from the heating cover plate 21. The rear plate 16 covers the first motor 28 and the second motor 29, effectively protecting the motors and making the overall appearance of the cooking equipment more integrated.

[0063] The connecting cylinder 15 of the cooking cabinet 1 is bent and then connected by laser welding. Specifically, the third side plate 151, the fourth side plate 152, the fifth side plate 153, and the sixth side plate 154 are formed by first bending a metal plate and then connecting them at the joint (which can be the connection point of the third side plate 151 and the sixth side plate 154) by laser welding, so that the connecting cylinder 15 forms a complete cylindrical structure with a rectangular cross-section. The first side plate 12 and the second side plate 14 are respectively welded to both ends of the connecting cylinder 15 by sealing welding. Then, the cabinet door 13 is installed through a hinge structure to form the cooking cabinet 1.

[0064] like Figure 1 and Figure 9 As shown, the heating element 22 is arranged in a ring around the outer periphery of the first impeller 23, and is located between the first impeller 23 and the second impeller 24. The surrounding heating element 22 ensures that the hot air delivered from all positions around the first impeller 23 is heated evenly. The evenly heated hot air is then delivered to the second impeller 24 and returned to the cooking chamber 11 in a direct or near-direct blowing manner to heat the food, effectively improving heating uniformity. In this embodiment, the heating element 22 includes a ring-shaped heating tube. Multiple heating tubes can be arranged at intervals along the second direction, and each heating tube surrounds the outer periphery of the first impeller 23. The first impeller 23 has a certain size along the second direction, so multiple heating tubes can be arranged using this size to increase heat exchange efficiency.

[0065] like Figure 2 and Figure 4As shown, the hot air circulation of the cooking device in this embodiment is as follows: hot air is drawn into the heating chamber 25 from point a of the second side plate 14, and under the action of the first impeller 23, it passes through the heating device 22 in the direction of arrow b (i.e., the first direction) for heating, and then blows to the four second impellers 24 around the perimeter. Under the action of the second impellers 24, the direction of the hot air is changed and blows directly into the cooking chamber 11 in the direction of arrow c (i.e., the second direction). Due to the suction action of the first impeller 23 in the central area, the hot air in the cooking chamber 11 returns to point a in the direction of arrow d to achieve a complete hot air circulation.

[0066] In another embodiment of this utility model, referring to Figures 1 to 9 As shown, this embodiment is similar in structure to the above embodiment, except that the heating component 2 in this embodiment is connected to any one of the third side plate 151, the fourth side plate 152, the fifth side plate 153 and the sixth side plate 154, that is, the mounting side plate is any one of the third side plate 151, the fourth side plate 152, the fifth side plate 153 and the sixth side plate 154.

[0067] In another embodiment of this utility model, such as Figure 10 As shown (some of the reference numerals in the accompanying drawings are retained), Figures 1 to 9 This embodiment is structurally similar to the above embodiment, except that: in this embodiment, the centrally arranged first impeller 23 consists of multiple sub-impellers 230. Specifically, the first impeller 23 includes two sub-impellers 230, and the air inlet 141 includes a number of sub-air holes 1410 equal to the number of sub-impellers 230. The sub-impellers 230 and sub-air holes 1410 are positioned in a one-to-one correspondence. The two sub-impellers 230 are arranged in a straight line along the vertical direction, and the four second impellers 24 are distributed at the four corners of the second side plate 14. The two sub-impellers 230 and the four second impellers 24 can be arranged in a two-row, three-column matrix on the second side plate 14. By setting two sub-impellers 230, the force of the hot air suction in the middle can be increased, improving the circulation effect. Furthermore, the sub-impellers 230 cover a sufficient amount of space in the cooking chamber 11 in the vertical direction, allowing the cooking chamber 11 to draw in more hot air in the central area, resulting in higher uniformity of hot air.

[0068] Two third protrusions extend from the center of the second side plate 14 toward the side away from the cooking chamber 11. These two third protrusions are spaced vertically apart. A third groove is formed on the side of the second side plate 14 near the cooking chamber 11 corresponding to the position of each third protrusion. An air inlet 141 is located at the bottom of the third groove. Fourth protrusions extend from the four corners of the second side plate 14 toward the side away from the cooking chamber 11. A fourth groove is formed on the side of the second side plate 14 near the position of each fourth protrusion. An air outlet 142 is located at the bottom of the fourth groove. The two third protrusions and four fourth protrusions are arranged in a two-row, three-column matrix. Preferably, both the third and fourth protrusions are circular. Further, the dimensions of the second side plate 14 are 415mm * 235mm. The radius of the third protrusion is 50mm, and the height is 5mm. The center-to-center distance between the two third protrusions is 115mm. The radius of the fourth protrusion is 50mm, and the height is 5mm. The center-to-center distance between the fourth and third protrusions in the same row is 140mm. Preferably, a plurality of first through holes 1411 forming the air inlet 141 are distributed throughout the bottom of the third groove, and a plurality of second through holes 1421 forming the air outlet 142 are distributed throughout the bottom of the fourth groove.

[0069] like Figure 10 As shown, the hot air circulation of the cooking device in this embodiment is as follows: hot air is drawn into the heating chamber 25 from point a of the second side plate 14, and under the action of the first impeller 23, it passes through the heating device 22 in the direction of arrow b (i.e., the first direction) for heating, and then blows to the four second impellers 24 around the perimeter. Under the action of the second impellers 24, the direction of the hot air is changed and blows directly into the cooking chamber 11 in the direction of arrow c (i.e., the second direction). Due to the suction action of the first impeller 23 in the central area, the hot air in the cooking chamber 11 returns to point a in the direction of arrow d to achieve a complete hot air circulation.

[0070] The cooking device in this embodiment has six motors. These six motors can be controlled simultaneously, saving on control circuit costs, or they can be controlled independently. When multi-chamber cooking is required, or when a separate small chamber is needed for efficient cooking, a baking tray 100 can be placed inside the cooking chamber 11. The baking tray 100 separates the cooking chamber 11 vertically, and the first motor 28 of the upper control fan 230 and the second motor 29 of the control second fan 24 distributed to its left and right are controlled independently, forming a hot air cooking area where only the upper part operates independently. This design makes the cooking chamber more flexible in use.

[0071] Of course, the arrangement of the sub-wind turbines 230 is not limited to a straight line in the vertical direction. They can also be arranged in a straight line in the horizontal direction or in a ring. In addition, the number of sub-wind turbines 230 is not limited to two. They can also be three or more.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cooking device, characterized in that, include: A cooking cabinet has a hollow interior forming a cooking chamber. The cooking cabinet has a first side panel with an opening communicating with the cooking chamber. A door is provided at the opening. The cooking cabinet also has a mounting side panel that is directly opposite to or connected to the first side panel. An air inlet is provided at the center of the mounting side panel, and multiple air outlets are provided on the mounting side panel. All the air outlets are distributed in a rectangular or ring shape around the air inlet. A heating assembly is disposed on the outside of the cooking cabinet. The heating assembly includes a heating cover, a heating element, a first fan, and a second fan. The heating cover is connected to the mounting side plate, forming a heating chamber between the heating cover and the mounting side plate. Both the first and second fan wheels are rotatably disposed within the heating chamber. The first fan wheel is directly opposite the air inlet. The number of second fan wheels is the same as the number of air outlets, and their positions correspond one-to-one. The heating element is disposed in the air outlet direction of the first fan wheel. The air outlet direction of the first fan wheel is parallel to a first direction, and the air outlet direction of the second fan wheel forms an angle α with a second direction, where 0 ≤ α < 60°. The first direction is parallel to the mounting side plate, and the second direction is perpendicular to the mounting side plate.

2. The cooking apparatus according to claim 1, characterized in that, The mounting side panel is rectangular, and the air outlet is provided at least at the four corners adjacent to the mounting side panel.

3. The cooking apparatus according to claim 1, characterized in that, The first wind turbine includes at least two sub-wind turbines, and the air inlet includes a number of sub-wind inlets that are the same as the number of sub-wind turbines. The sub-wind turbines and the sub-wind inlets are in one-to-one correspondence. All of the aforementioned sub-rotors are arranged in a straight line along the vertical or horizontal direction; or, All of the sub-wind rotors are arranged in a ring around the center of the mounting side plate.

4. The cooking apparatus according to claim 1, characterized in that, The cooking cabinet includes a second side panel that is directly opposite the first side panel, and the first side panel and the second side panel are connected by a connecting tube. The mounting side plate is the second side plate; or, the connecting cylinder has a rectangular cross-section, and the connecting cylinder includes a third side plate, a fourth side plate, a fifth side plate, and a sixth side plate connected in sequence, and the mounting side plate is the third side plate, the fourth side plate, the fifth side plate, or the sixth side plate.

5. The cooking apparatus according to any one of claims 1 to 4, characterized in that, The cross-sectional area of ​​the air inlet is larger than the cross-sectional area of ​​a single air outlet.

6. The cooking apparatus according to any one of claims 1 to 4, characterized in that, The heating assembly also includes a first motor and a second motor, wherein the first motor is driven to the first impeller and the second motor is driven to the second impeller.

7. The cooking apparatus according to claim 6, characterized in that, The heating assembly further includes a heat insulation plate and a heat insulation layer. The heat insulation plate is disposed on the side of the heating cover plate away from the mounting side plate, and the heat insulation layer is disposed between the heat insulation plate and the heating cover plate. The first motor and the second motor are both disposed on the side of the heat insulation plate away from the heat insulation layer.

8. The cooking apparatus according to any one of claims 1 to 4, characterized in that, The first impeller includes a first connecting portion and a plurality of first blades surrounding the periphery of the first connecting portion. Each first blade includes a first body and a flange. The first body is parallel to the mounting side plate, and the flange is set at an angle to the first body. The flange is located on one side of the first body along the rotation direction of the first impeller.

9. The cooking apparatus according to any one of claims 1 to 4, characterized in that, The heating device is arranged in a ring around the outer periphery of the first impeller, and the heating device is located between the first impeller and the second impeller.

10. The cooking apparatus according to any one of claims 1 to 4, characterized in that, The heating cover plate includes a first connecting plate, which protrudes to the side away from the mounting side plate to form a first protrusion. A first groove is formed on the side of the first connecting plate facing the mounting side plate corresponding to the position of the first protrusion. The first connecting plate and the mounting side plate are detachably connected, and a sealing ring is provided between them.

Images