Top-and-bottom baking-type air fryer oven with shingled oil drip tray structure

Abstract

A top-and-bottom baking-type air fryer oven with a shingled oil drip tray structure (10). The top-and-bottom baking-type air fryer oven comprises the shingled oil drip tray structure (10) and a bottom electric heating assembly (30-2-1) mounted therebelow, thereby achieving the function of an air fryer over or air fryer in which heating and baking can be carried out from both the top and the bottom. A hot airflow formed by top-and-bottom heating makes the temperature of hot air inside the air fryer oven or the air fryer more uniform, thereby mitigating the phenomenon whereby food fried by existing air fryer ovens or air fryers have good effects on the upper surfaces but poor effects on the lower surfaces, and overcoming the defect of it being difficult for existing air fryer ovens or air fryers to fry and bake two or more layers of food in a balanced way.

Description

An air fryer with a tile-shaped oil collection grid structure for both top and bottom baking. Technical Field

[0001] This invention belongs to the field of kitchen appliance manufacturing, specifically a top and bottom baking type air fryer oven with a tile-shaped oil collection grid structure. Background Technology

[0002] Figure 1 is a schematic diagram of the main structure of an existing air fryer oven on the market. The basic structure includes an oil collection tray (100), a bottom frying tray (200), an upper frying tray (300), an electric heating device (400), a fan (500), a fan motor (600), and a control system and operation panel (700).

[0003] Because the bottom tray of this type of air fryer only has the function of collecting oil or water droplets and does not allow air to flow through it, the air fryer can only have an electric heating device (400) on top and rely on the rotation of the fan (500) to stir the air, so that the hot air sinks along the side wall area of ​​the air fryer and then rises along the center area of ​​the air fryer. This results in a high temperature at the top and a low temperature at the bottom of the air fryer, and a high temperature gradient between the top and bottom. As a result, the top surface of the food is fried better, while the bottom surface is fried worse. In particular, it has the defect of not being able to provide even frying for two or more layers of food. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing air fryer ovens and to provide an air fryer oven or frying pan with a top and bottom baking type and a tile-type oil collection grid structure. The technical solution is as follows:

[0005] Referring to Figures 2 and 3, an air fryer oven with a tile-shaped oil collection grid structure and an upper and lower baking type has a main structure including a housing, a baking grid, an electric heating device, a control system, and an operation panel. It also includes a tile-shaped oil collection grid structure and a bottom heating element disposed below the tile-shaped oil collection grid structure. The tile-shaped oil collection grid structure includes at least an upper tile layer assembly and a lower tile layer assembly that are vertically overlapped. The upper tile layer assembly and the lower tile layer assembly each include a number of upper and lower tile pieces arranged at intervals. The upper and lower tile pieces are stacked in a staggered manner, and the lower tile piece is provided with a concave groove for storing a small amount of liquid. The function of the concave groove is to retain a small amount of oil or water droplets flowing down from the fried food.

[0006] Referring to Figure 5, the projected area of ​​each upper tile in the vertical direction can completely cover the space between the two adjacent lower tiles; so that oil or water droplets dripping through the space between the upper tile components will eventually fall into the concave grooves of each lower tile in the lower tile layer component and remain there. The vertical spacing of the overlapping upper and lower tile layers allows the hot air below to pass smoothly through the tile-type oil receiving grid structure to reach the frying space inside the frying oven.

[0007] In Figure 5, the small gray dots represent oil or water droplets, and the upward arrows represent hot air rising through the oil collection grid.

[0008] Referring to Figure 3, the upper and lower tiles are straight grid-type structures or regular or irregular curved structures along a straight line, and are arranged at intervals.

[0009] Alternatively, referring to Figures 6a to 6c, the upper and lower tiles are concentric but different scale tile ring structures or tile disc structures. The shapes of the tile ring structures and tile disc structures are one or more combinations of circular rings, near-circular rings, annular rectangles, near-circular shapes, or rectangles. The concave tile ring structures and tile disc structures are designed to retain small amounts of oil or water droplets that flow down from the fried or roasted food through the space in the innermost tile ring.

[0010] Referring to Figure 6e, the cross-section of the upper tile is a horizontally extending planar structure, or, as shown in Figure 4a, a sloping structure with one side higher than the other, or an umbrella-shaped structure, an arched structure, or an arc-shaped structure with the middle higher and both sides lower and extending; the cross-section of the lower tile is a groove-shaped structure with the middle lower and both sides higher and extending.

[0011] Referring to Figures 6d to 6g, the center of the lower layer tile ring assembly can be a concave tile with an upward opening. The cross-section of the concave tile is a concave arc or curve with a low center and upward-curving edges.

[0012] Referring to Figures 6h and 6i, the center of the upper tile ring assembly can be an upper tile plate whose vertically projected area along its edge is sufficient to cover the central space of the smallest scale tile ring of the lower layer. The upper tile plate can be a convex tile, a flat tile, or a concave tile.

[0013] The upper tile of the umbrella-shaped structure includes two inclined surfaces, as shown in Figure 4b. The two inclined surfaces have the same length and inclination angle. Alternatively, as shown in Figures 4d and 4e, one inclined surface is longer than the other but has a smaller inclination angle.

[0014] Or / and, see Figure 4c, the upper tile of the arc-shaped structure includes arc-shaped surfaces that bend downwards on both sides;

[0015] Or / and, see Figure 4f, the upper tile of the arched structure includes a flat top surface and two inclined surfaces connected to the sides of the flat top surface.

[0016] Referring to Figures 4a to 4f, the groove structure is an arc shape with upturned edges, or an open trapezoid with upturned edges, or an open triangle with upturned edges, or other shapes with upturned edges.

[0017] Referring to Figures 6d to 6i, cross-sectional diagrams of six typical combinations of tile ring structures or tile-containing structures are shown respectively. In fact, there can be many more combinations.

[0018] Referring to Figure 2, the electric heating assembly includes a bottom electric heating device, including or excluding a fan and a fan motor for agitating the flow of hot air.

[0019] The bottom of the inner cavity of the oven is provided with an oil collecting grid structure. The tile-shaped oil collecting grid structure can be detachably installed in the inner cavity of the oven, making it easy to put in or take out the fryer.

[0020] A component skeleton is provided between the upper tile assembly and the lower tile assembly. The upper tile assembly and the lower tile assembly are integrally connected through the component skeleton, or they are connected through the component skeleton to form a separable combined structure.

[0021] Referring to Figure 8, the frying grid is composed of a frying basket with a grid or mesh bottom; the side or top of the box has an inlet and outlet that connects to the inner cavity of the box, and the frying basket can be detachably installed and removed from the inner cavity of the box by pulling it out from the side or by sinking it down from above.

[0022] The control system is connected to the upper heating element, the lower heating element, and the temperature sensor inside the oven. By adjusting the power and duration of the heating element, the control system can realize various frying and baking functions of the air fryer or air fryer.

[0023] The beneficial effects of this invention are:

[0024] 1. Improves upon the existing air fryer ovens or air fryers on the market, which typically produce better results on the top surface of food but less so on the bottom surface.

[0025] 2. It overcomes the shortcomings of existing air fryer ovens or air fryer grills on the market, which cannot evenly fry or grill two or more layers of food. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the basic structure of existing air fryer ovens on the market today.

[0027] Figure 2 is a schematic diagram of an air fryer oven with a tile-type oil collection grid structure.

[0028] Figure 3 is a structural schematic diagram of the arrangement and stacking of the upper and lower grid-shaped tile components.

[0029] Figures 4a to 4f are schematic diagrams of the cross-sectional shapes of the grid-shaped upper and lower tile layer components, respectively.

[0030] Figure 5 is a schematic diagram illustrating the functional effects of using a corrugated oil catcher structure to separate oil and allow for the flow of hot air.

[0031] Figures 6a, 6b, and 6c are schematic diagrams of the upper layer tile ring, lower layer tile ring, and lower layer tile plate stacked together in a ring structure.

[0032] Figures 6d to 6i are cross-sectional views of six typical combinations of upper and lower tile rings and lower or upper tile discs in a ring structure.

[0033] Figure 7 is a schematic diagram of the basic structure of the deep fryer oven in Example 1 and the circulation of hot air from the top and bottom.

[0034] Figure 8 is a schematic diagram of the basic structure of the fryer and the circulation of hot air from top to bottom in Example 2.

[0035] The reference numerals in Figure 1 are as follows: 100 is the oil collection grid, 200 is the lower frying grid, 300 is the upper frying grid, 400 is the electric heating device, 500 is the fan wheel, 600 is the fan wheel motor, and 700 is the control system and operation panel.

[0036] The reference numerals in Figures 2 to 8 are as follows: 10 is the overlapping oil-receiving grid structure, 10-1 is the upper tile layer assembly, 10-1-1 is the upper strip tile, 10-2 is the lower tile layer assembly, 10-2-1 is the lower strip tile, 10-3-1 is the upper tile ring, 10-3-2 is the upper tile disc, 10-4-1 is the lower tile ring, and 10-4-2 is the lower tile disc.

[0037] 20 is the frying and grilling grid, 21 is the food to be fried or grilled, 30-1 is the upper electric heating device, 30-1-1 is the upper impeller, 30-1-2 is the upper impeller motor, 30-2-1 is the bottom electric heating device, 30-2-2 is the lower impeller, and 30-2-3 is the lower impeller motor.

[0038] 40 is the control system and operation panel of the fryer oven; 50 is the oven body; 60 is the pot body of the fryer; 70 is the frying basket of the fryer; and 80 is the control system and operation panel of the fryer.

[0039] In Figures 5, 7 and 8, 00 represents oil or water droplets, arrow 01 represents the downward hot airflow generated by the upper heating element, and arrow 02 represents the upward hot airflow generated by the lower heating element. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments. Specific Implementation Example 1:

[0041] As shown in Figure 7, the main structure of this embodiment includes a box 50, a frying grid 20, an upper electric heating device 30-1, an upper impeller 30-1-1 and motor 30-1-2, a bottom electric heating device 30-2-1, a lower impeller 30-2-2 and motor 30-2-3, and a control system and operation panel 40.

[0042] Referring to Figure 3, the tile-type oil-receiving grid structure 10 in this embodiment adopts an upper tile layer assembly and a lower tile layer assembly of a grid structure. The upper tile layer assembly consists of 9 upper tile pieces, which are upper strip tiles 10-1-1. The lower tile layer assembly consists of 10 lower tile pieces, which are lower strip tiles 10-2-1.

[0043] For large frying ovens, each lower strip tile 10-2-1 of the lower tile assembly can be made to be slightly tilted downwards at one end forward or one end backwards. Then, another concave oil collection groove can be horizontally connected below one end of the 10 lower strip tiles 10-2-1 with the lower tilt, so that the oil and water of each lower strip tile 10-2-1 can flow into the newly added oil collection groove and collect, which makes cleaning easier.

[0044] The bottom electric heating device 30-2-1 and the lower fan wheel 30-2-2 are located below the tiled oil receiving grid structure.

[0045] The frying and baking process in this embodiment:

[0046] Place the food 21 into the fryer oven, select the frying temperature and time on the control panel, and start the fryer oven. The hot air flow 01 generated by the upper heating element diffuses from top to bottom, while the hot air flow 02 generated by the bottom heating element 30-2-1 diffuses from bottom to top through the tiled oil collection grid structure 10. The downward and upward hot air flows cross and converge in the middle space of the fryer oven, making the temperature of the upper, middle and lower layers of the oven more consistent. The upper, lower and surrounding surfaces of the food 21 are fried at a relatively uniform temperature.

[0047] 00 represents an oil droplet or a water droplet, 01 arrow represents a downward hot airflow generated by the upper heating element, and 02 arrow represents an upward hot airflow generated by the lower heating element.

[0048] Oil or water droplets 00 generated by the fried or grilled food 21 are deposited in the concave grooves of the lower tile assembly through the gaps in the upper tile assembly, and will not drip onto the bottom heating device 30-2-1.

[0049] After being fried and baked for a set time, the top, bottom and surrounding surfaces of the food 21 are all fried and baked to a relatively even degree, achieving high-quality frying and baking without the need for flipping.

[0050] After frying or baking, the tile-shaped oil collection grid structure 10 can be easily removed from the fryer oven, and the upper tile layer assembly 10-1 and the lower tile layer assembly 10-2 can be cleaned separately. Specific Implementation Example 2:

[0051] As shown in Figure 8, this embodiment 2 uses a tile-type oil collection grid structure for an air fryer. Its main structure includes a pot body 60, an air fryer basket 70, an upper electric heating device 30-1, an upper impeller 30-1-1 and a motor 30-1-2, a bottom electric heating device 30-2-1, a lower impeller 30-2-2 and a motor 30-2-3, and a control system and operation panel 80.

[0052] Referring to Figures 6a to 6c, the overlapping oil receiving grid structure 10 in this embodiment adopts a rotary structure. The upper tile layer assembly 10-3 is composed of two upper tile pieces, which are upper tile rings 10-3-1. The lower tile layer assembly 10-4 is composed of two lower tile pieces and one lower tile disc 10-4-2 with an upward opening, which is a lower tile ring 10-4-1.

[0053] The overlapping oil receiving grid structure 10 and the frying basket 70 adopt a separate structure.

[0054] Both the tile-shaped oil collection grid structure 10 and the frying basket 70 can be inserted into or removed from the rim of the air fryer.

[0055] The bottom electric heating device 30-2-1 is located below the tile-type oil receiving grid structure.

[0056] In this embodiment, if the fryer basket is relatively shallow, only the bottom heating element can be installed, thus eliminating the need for a fan and fan motor.

[0057] Oil or water droplets 00 produced by the fried or roasted food 21 are deposited through the gaps in the upper tile ring 10-3-1 into the concave grooves of the lower tile ring 10-4-1 and the central tile plate, and will not drip onto the bottom heating device 30-2-1.

[0058] In Figure 8, 00 represents oil or water droplets, arrow 01 represents the downward hot airflow generated by the upper heating element, and arrow 02 represents the upward hot airflow generated by the bottom heating element.

[0059] After frying or baking, the tile-shaped oil collection grid structure 10 can be removed from the edge of the air fryer for cleaning.

[0060] The other frying and baking processes in this embodiment are almost the same as in Embodiment 1, and will not be described in detail here.

[0061] It should be noted that the preferred embodiments of the present invention are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. These embodiments are not intended to impose additional limitations on the content of the present invention, and are provided to provide a more thorough and comprehensive understanding of the disclosure of the invention. Furthermore, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of the present invention specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An air fryer oven with a tile-type oil collection grid structure and an upper and lower baking type, the main structure of which includes a housing (50), a baking grid (20), an electric heating device (30), and a control system and operation panel (40), characterized in that: It also includes a tile-type oil receiving grid structure (10) and a bottom layer electric heating component (30-2) disposed below the tile-type oil receiving grid structure. The tile-type oil receiving grid structure (10) includes at least an upper tile layer component (10-1) and a lower tile layer component (10-2) that are stacked at intervals in the vertical direction. The upper tile layer component (10-1) and the lower tile layer component (10-2) each include a number of upper and lower tile pieces arranged at intervals. The upper and lower tile pieces are stacked in an interleaved manner, and the lower tile piece is provided with a concave groove for storing a small amount of liquid.

2. The air fryer oven with a top and bottom baking type and a tile-shaped oil receiving grid structure according to claim 1, characterized in that: The projected area of ​​each upper tile along the vertical direction can completely cover the space between the two adjacent lower tiles.

3. The air fryer oven with a top and bottom baking type and a tile-shaped oil receiving grid structure according to claim 1, characterized in that: The upper and lower tiles are straight grid-type structures or regular or irregular curved structures along a straight line, and are arranged at intervals. Alternatively, the upper and lower tiles are concentric tile ring structures or tile disc structures with different dimensions. The shape of the tile ring structure and tile disc structure is one or a combination of two or more of the following: circular ring, near-circular ring, annular rectangle, near-circular, or rectangular.

4. The air fryer oven with a top and bottom baking type and a tile-type oil receiving grid structure according to claim 3, characterized in that: The cross-section of the upper tile is a horizontally extending planar structure, or a sloping structure with one side higher than the other, or an umbrella-shaped structure, an arch-shaped structure, or an arc-shaped structure with the middle higher and the two sides lower and extending; the cross-section of the lower tile is a groove-shaped structure with the middle lower and the two sides higher and extending.

5. The air fryer oven with a top and bottom baking type and a tile-shaped oil receiving grid structure according to claim 4, characterized in that: The upper tile of the umbrella-shaped structure includes two inclined surfaces, the two inclined surfaces having the same length and inclination angle, or one inclined surface being longer than the other but having a smaller inclination angle than the other inclined surface; Or / and, the upper tile of the arc-shaped structure includes arc-shaped surfaces that bend downwards on both sides; Or / and, the upper tile of the arched structure includes a flat top surface and two inclined surfaces connected to the sides of the flat top surface.

6. The air fryer oven with a top and bottom baking type and a tile-type oil receiving grid structure according to claim 4, characterized in that: The groove structure is an arc shape with upturned edges, or an open trapezoid with upturned edges, or an open triangle with upturned edges, or other shapes with upturned edges.

7. The air fryer oven with a top and bottom baking type and a tile-type oil receiving grid structure according to claim 1, characterized in that: The bottom heating assembly (30-2) includes a bottom heating device (30-2-1), which may or may not include a fan (30-2-2) and a fan motor (30-2-3) for stirring the flow of hot air.

8. The air fryer oven with a top and bottom baking type and a tile-type oil receiving grid structure according to claim 1, characterized in that: The bottom of the inner cavity of the box is provided with an oil collecting grid support structure, and the tile-type oil collecting grid structure (10) is detachably installed in the inner cavity of the box through the oil collecting grid support structure.

9. The air fryer oven with a top and bottom baking type and a tile-type oil receiving grid structure according to claim 1, characterized in that: A component skeleton is provided between the upper tile assembly (10-1) and the lower tile assembly (10-2). The upper tile assembly (10-1) and the lower tile assembly (10-2) are integrally connected through the component skeleton, or they are connected through the component skeleton to form a separable combined structure.

10. The air fryer oven with a top and bottom baking type and a tile-shaped oil receiving grid structure according to claim 1, characterized in that: The frying grid (20) is composed of a frying basket with a grid or mesh bottom; the side or top of the box has an inlet and outlet that connects to the inner cavity of the box, and the frying basket can be detached and installed in and out of the inner cavity of the box by side pull-out or by sinking from above.

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