Air frying microwave oven

Abstract

The utility model provides an air frying microwave oven which comprises an oven cavity and a hot air structure, a lower heating piece is arranged above the bottom of the oven cavity, and the hot air structure is located on the upper portion of the oven cavity and used for circularly conveying hot air into the oven cavity. The hot air structure comprises an upper heating piece, the upper heating piece comprises a first heating piece, and the first heating piece is located above the top of the furnace chamber; the upper heating piece further comprises a second heating piece, and the second heating piece is located below the top of the oven cavity. According to the air frying microwave oven, the first heating piece and the second heating piece are arranged above and below the top plate respectively, direct pollution of oil smoke to the upper heating piece in the cooking process can be reduced, heat radiation generated by the second heating piece directly acts on the interior of the oven cavity, and meanwhile the lower heating piece is arranged at the bottom of the oven cavity. And the temperature balance in the oven cavity is further ensured, so that the cooked food is heated uniformly, the cooking time is short, and the user experience is good.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and more specifically, to an air fryer microwave oven. Background Technology

[0002] As living standards improve, cooking methods are becoming increasingly diverse, and single kitchen appliances can no longer meet consumer needs. Air fryer microwaves, which integrate the functions of an air fryer and a microwave oven, have a promising market prospect due to their ability to rapidly heat, defrost, and cook food using high-temperature air circulation and / or microwave radiation, while also occupying minimal space.

[0003] Existing air fryer microwave ovens are mostly based on traditional microwave ovens, achieving complementary microwave heating and air frying functions by adding an air frying component to the top of the microwave oven. However, this approach suffers from slow heating speed and uneven heating. To address this, Chinese Patent Application No. 202323020083.4, filed earlier by the applicant, discloses a cooking device suitable for heating food, including a shell and a hot air mechanism. The hot air mechanism has at least two independent hot air chambers; these chambers are connected to the interior of the shell and form hot air channels, with adjacent hot air channels having hot air flows in opposite directions. This design improves the uniformity of hot air distribution within the shell, but it suffers from slow heating and long cooking times, thus affecting the user experience.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] The problem solved by this invention is that the existing air fryer microwave ovens have an unreasonable structure, resulting in uneven heating inside the oven cavity and long cooking time.

[0006] To address the aforementioned problems, this utility model provides an air fryer microwave oven, comprising a cavity and a hot air structure. A lower heating element is disposed above the bottom of the cavity, and the hot air structure is located at the upper part of the cavity for circulating hot air into the cavity. The hot air structure includes an upper heating element, which includes a first heating element located above the top of the cavity. The upper heating element also includes a second heating element located below the top of the cavity.

[0007] This setup can further improve the uniformity of heating within the oven cavity, shorten cooking time, and improve the final cooking effect on the food; it is simple in structure and easy to implement.

[0008] Preferably, the oven cavity includes a top plate, and the first heating element and the second heating element are located on the upper and lower sides of the top plate and are disposed adjacent to the top plate, respectively. This arrangement exposes only the second heating element inside the oven cavity, effectively preventing oil fumes from contaminating the upper heating element; at the same time, the second heating element directly generates heat radiation inside the oven cavity, thereby reducing temperature fluctuations inside the oven cavity and improving the final cooking effect of the food.

[0009] Preferably, the first heating element is two straight heating tubes, and the second heating element is a U-shaped heating wire. The second heating element has protrusions on both sides parallel to the first heating element, and these protrusions converge towards each other at the center. This arrangement increases the heating length of the second heating element and, in conjunction with the first heating element, enhances the heating uniformity within the oven cavity, thus improving the food's cooking effect.

[0010] Preferably, a lower cover plate is provided on the upper part of the lower heating element, and the lower cover plate is made of borosilicate glass. This arrangement can further ensure that the temperature inside the oven cavity is uniform and there is no significant temperature difference, resulting in good uniform heating of the cooked food and short cooking time, thus providing a better user experience. Borosilicate glass has a low coefficient of thermal expansion, which can maintain good stability when heated at high temperatures and is not prone to deformation or cracking.

[0011] Preferably, the hot air structure includes a cover and a partition. The furnace cavity includes a top plate, the cover is located above the top plate and the two together form a hot air space, and the partition divides the hot air space into two relatively independent hot air chambers. The hot air structure also includes a motor assembly and a fan. The fan is disposed in the hot air chamber, and the drive shaft of the motor assembly passes through the cover and is driven to connect with the fan, thereby delivering hot air flows in opposite directions to the furnace cavity from the two adjacent hot air chambers.

[0012] This setup allows two hot air chambers to simultaneously deliver hot air into the furnace cavity, which improves the uniformity of hot air distribution within the furnace cavity, enhancing heating efficiency and speed. Furthermore, the two hot air chambers operate independently with opposite airflow directions, preventing airflow interference and resulting in better airflow performance.

[0013] Preferably, the housing includes a fixed plate and a heat insulation plate stacked together. The heat insulation plate is located on the side of the fixed plate near the top plate. The fan is located between the heat insulation plate and the top plate. The motor assembly is fixed on the side of the fixed plate away from the heat insulation plate. There is a gap between the mounting surface of the fixed plate and the heat insulation plate.

[0014] This design reduces the upward conduction of heat generated by the upper heating element to the motor assembly, improving the operational stability and reliability of the motor assembly; at the same time, it increases the overall strength of the hot air structure and enhances the heat insulation effect, preventing the loss of internal heat.

[0015] Preferably, multiple ventilation holes are evenly distributed at positions corresponding to the hot air space on the top plate, and a portion of the top plate is recessed downwards to form a clearance section for accommodating the fan. This arrangement allows the hot air generated by the fan to enter the oven cavity more smoothly, while reducing the overall height of the hot air structure, making the air fryer microwave oven more compact.

[0016] Preferably, the top plate is provided with reinforcing ribs, and there are two reinforcing ribs located on opposite sides of the fixing plate. This arrangement can increase the overall mechanical strength of the top plate, while limiting and constraining the installation positions of the fixing plate and the heat insulation plate, thereby improving assembly efficiency and accuracy.

[0017] Preferably, the fixing plate is provided with a first receiving groove for limiting the assembly of the motor assembly, and the heat insulation plate is provided with a second receiving groove at a corresponding position to the first receiving groove. This arrangement can help to position the installation between the fixing plate and the heat insulation plate, while reducing the overall height of the hot air structure, making the air fryer microwave oven more compact.

[0018] Compared with the prior art, the air fryer microwave oven of this utility model has the following beneficial effects: 1) By setting the first heating element and the second heating element at the top and bottom of the top plate respectively, the direct pollution of the upper heating element by oil fumes during cooking can be reduced. At the same time, the heat radiation generated by the second heating element directly acts on the oven cavity, so that the temperature fluctuation inside the oven cavity is small. By setting the lower heating element at the bottom of the oven cavity, the temperature inside the oven cavity is further ensured to be even, so that the food is heated evenly and the cooking time is short, resulting in a better user experience; 2) By delivering hot air into the oven cavity through two hot air chambers at the same time, the uniformity of hot air distribution inside the oven cavity can be improved, thereby improving the heating effect and heating speed; 3) The structure is simple and easy to manufacture and process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the air fryer microwave oven described in this embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of an explosion of the air fryer microwave oven described in an embodiment of the present invention;

[0021] Figure 3 This is a longitudinal cross-sectional schematic diagram of the air fryer microwave oven described in this embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Furnace cavity; 101-Top plate; 1011-Allowing part; 1012-Ventilation hole; 1013-Reinforcing rib; 102-Bottom plate; 2-Hot air structure; 21-Fixing plate; 211-First receiving slot; 22-Heat insulation plate; 221-Second receiving slot; 23-Motor assembly; 231-First motor; 232-Second motor; 24-Fan; 25-Upper heating element; 251-First heating element; 252-Second heating element; 26-Separator; 3-Lower heating element; 4-Lower cover plate. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Without conflict, the technical features of the embodiments of this utility model can be combined with each other.

[0025] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0026] In the description of this utility model, 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; 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.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] With technological advancements, air fryer microwave ovens are gaining popularity as a new type of cooking appliance. They combine microwave penetrating heating with radiant heating from heating elements, enabling rapid heating, defrosting, and cooking of food while occupying minimal space, thus possessing broad market prospects. However, the heating element is typically positioned at the top of the cooking cavity, which can lead to long cooking times and uneven temperature distribution within the cavity, negatively impacting the user experience. Therefore, the applicant proposes the following technical solution:

[0029] like Figure 1-3 As shown, an air fryer microwave oven includes an oven cavity 1 and a hot air structure 2. The hot air structure 2 is located at the upper part of the oven cavity 1 and is used to circulate hot air into the oven cavity 1. The hot air structure 2 includes an upper heating element 25, which includes a first heating element 251 located above the top of the oven cavity 1. The upper heating element 25 also includes a second heating element 252 located below the top of the oven cavity 1.

[0030] This setup can further improve the heating uniformity within the oven cavity 1, shorten cooking time, and improve the final cooking effect on the food; it is simple in structure and easy to implement.

[0031] Preferably, the first heating element 251 consists of two straight heating tubes, and the second heating element 252 is a U-shaped heating wire. The second heating element 252 has protrusions on both sides parallel to the first heating element 251, with the protrusions converging towards each other at the center. This arrangement increases the heating length of the second heating element 252 and, in conjunction with the first heating element 251, enhances the heating uniformity within the oven cavity 1, thus improving the food's performance.

[0032] As an example of this utility model, the oven cavity 1 includes a top plate 101, and the first heating element 251 and the second heating element 252 are respectively located on the upper and lower sides of the top plate 101. This arrangement exposes only the second heating element 252 inside the oven cavity 1, effectively preventing oil fumes from contaminating the upper heating element 25; at the same time, the second heating element 252 directly generates heat radiation inside the oven cavity 1, thereby reducing temperature fluctuations inside the oven cavity 1 and improving the final cooking effect of the food.

[0033] Preferably, a lower heating element 3 is disposed above the bottom of the oven cavity 1, and a lower cover plate 4 is disposed above the lower heating element 3. The lower cover plate 4 is made of borosilicate glass. This arrangement can further ensure that the temperature inside the oven cavity 1 is uniform and there is no significant temperature difference, resulting in good uniform heating of the cooked food and short cooking time, providing a better user experience. Borosilicate glass has a low coefficient of thermal expansion, which can maintain good stability when heated at high temperatures and is not prone to deformation or cracking. Its smooth surface is not easily contaminated with oil and food residue, making it easy to clean. As an example of this utility model, the oven cavity 1 includes a bottom plate 102, and the lower heating element 3 is horizontally disposed on the bottom plate 102.

[0034] As an example of this utility model, the hot air structure 2 includes a cover and a partition 26. The cover is located above the top plate 101 and the two together form a hot air space. The partition 26 divides the hot air space into two relatively independent hot air chambers. The hot air structure 2 also includes a motor assembly 23 and a fan 24. The fan 24 is disposed in the hot air chamber. The drive shaft of the motor assembly 23 passes through the cover and is driven to connect with the fan 24, thereby delivering hot air flows in opposite directions to the furnace cavity 1 from the two adjacent hot air chambers.

[0035] This configuration allows two hot air chambers to simultaneously supply hot air into the furnace cavity 1, improving the uniformity of hot air distribution within the furnace cavity 1 and enhancing heating efficiency and speed. The two hot air chambers are independent of each other, and the hot air flows in opposite directions, preventing mutual interference and resulting in better airflow. As an example of this invention, the motor assembly 23 includes a first motor 231 and a second motor 232, which respectively drive the fans 24 in the two relatively independent hot air chambers to rotate.

[0036] Preferably, the housing includes a stacked fixing plate 21 and a heat insulation plate 22. The heat insulation plate 22 is located on the side of the fixing plate 21 near the top plate 101. The fan 24 is disposed between the heat insulation plate 22 and the top plate 101. The motor assembly 23 is fixed on the side of the fixing plate 21 away from the heat insulation plate 22. There is a gap between the mounting surface of the fixing plate 21 and the heat insulation plate 22. This arrangement can reduce the upward conduction of heat generated by the upper heating element 25 to the motor assembly 23, improving the operational stability and reliability of the motor assembly 23; at the same time, it can improve the overall strength of the hot air structure 2 and increase the heat insulation effect, preventing the loss of internal heat.

[0037] As an example of this utility model, a plurality of ventilation holes 1012 are evenly arranged at positions corresponding to the hot air space on the top plate 101, and a portion of the top plate 101 is recessed downward to form a clearance portion 1011 for accommodating the fan 24. This arrangement allows the hot air generated by the fan 24 to enter the oven cavity 1 more smoothly, while reducing the overall height of the hot air structure 2, making the structure of the air fryer microwave oven more compact.

[0038] Preferably, the top plate 101 is provided with reinforcing ribs 1013, and there are two reinforcing ribs 1013 located on opposite sides of the fixing plate 21. This arrangement can increase the overall mechanical strength of the top plate 101, and at the same time limit and constrain the installation position of the fixing plate 21 and the heat insulation plate 22, thereby improving assembly efficiency and accuracy.

[0039] Preferably, the fixing plate 21 is provided with a first receiving groove 211 for limiting the assembly of the motor assembly 23, and the heat insulation plate 22 is provided with a second receiving groove 221 at a position corresponding to the first receiving groove 211. This arrangement can serve to position the installation between the fixing plate 21 and the heat insulation plate 22, while reducing the overall height of the hot air structure 2, making the structure of the air fryer microwave oven more compact.

[0040] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air fryer microwave oven, characterized in that, It includes a furnace cavity (1) and a hot air structure (2). A lower heating element (3) is arranged above the bottom of the furnace cavity (1), and the hot air structure (2) is located in the upper part of the furnace cavity (1) for circulating and delivering hot air into the furnace cavity (1); the hot air structure (2) includes an upper heating element (25), and the upper heating element (25) includes a first heating element (251) which is located above the top of the furnace cavity (1); the upper heating element (25) further includes a second heating element (252) which is located below the top of the furnace cavity (1).

2. The air fryer microwave oven according to claim 1, characterized in that, The furnace cavity (1) includes a top plate (101), and the first heating element (251) and the second heating element (252) are respectively located on the upper and lower sides of the top plate (101) and are arranged adjacent to the top plate (101).

3. The air fryer microwave oven according to claim 2, characterized in that, The first heating element (251) is a linear heating tube, the second heating element (252) is a heating wire in the shape of a "mouth", and the second heating element (252) is provided with protrusions on two sides parallel to the first heating element (251), and the protrusions approach each other towards the middle position.

4. The air fryer microwave oven according to claim 1, characterized in that, A lower cover plate (4) is arranged on the upper part of the lower heating element (3), and the material of the lower cover plate (4) is borosilicate glass.

5. The air fryer microwave oven according to claim 1, characterized in that, The hot air structure (Z) includes a housing and a partition member (26). The furnace cavity (1) includes a top plate (101). The housing is located above the top plate (101), and the two together form a hot air space. The partition member (26) divides the hot air space into two relatively independent hot air chambers; the hot air structure (2) further includes a motor assembly (23) and a fan (24). The fan (24) is arranged in the hot air chamber, and the drive shaft of the motor assembly (23) passes through the housing and is drivingly connected to the fan (24), so that adjacent two hot air chambers deliver hot air flows with opposite rotation directions into the furnace cavity (1).

6. The air fryer microwave oven according to claim 5, characterized in that, The housing includes a fixed plate (21) and a heat insulation plate (22) stacked. The heat insulation plate (22) is located on the side of the fixed plate (21) close to the top plate (101). The fan (24) is arranged between the heat insulation plate (22) and the top plate (101). The motor assembly (23) is fixed on the side of the fixed plate (21) away from the heat insulation plate (22), and there is a gap between the mounting surface of the fixed plate (21) and the heat insulation plate (22).

7. The air fryer microwave oven according to claim 6, characterized in that, A plurality of ventilation holes (1012) are uniformly arranged at the corresponding positions of the top plate (101) and the hot air space. A part of the top plate (101) is recessed downward to form an avoidance part (1011) for accommodating the fan (24).

8. The air fryer microwave oven according to claim 7, characterized in that, Reinforcing ribs (1013) are arranged on the top plate (101), and there are two reinforcing ribs (1013) and they are located on the opposite sides of the fixed plate (21).

9. The air fryer microwave oven according to claim 8, characterized in that, A first accommodation groove (211) is arranged on the fixed plate (21) for limiting and assembling the motor assembly (23), and a second accommodation groove (221) is arranged at the position corresponding to the first accommodation groove (211) on the heat insulation plate (22).

Images