An air-frying microwave oven

Abstract

This invention provides an air fryer microwave oven, comprising a cavity and a circulating air duct chamber disposed on the upper part of the cavity. The cavity and the circulating air duct chamber are separated by a top plate of the cavity. A heating element is disposed near the top of the cavity, and the circulating air duct chamber is located above the heating element. A fan is disposed inside the circulating air duct chamber, and the heating element is located on the axially lower side of the fan. Since there is no heating element in the top-mounted dual circulating air duct chamber, the fan is only responsible for circulating air into the cavity. This allows for a larger fan blade diameter, resulting in a larger air volume. The top of the cavity has a wave-shaped heating element positioned directly below the fan, allowing the heat from the heating element to be directly directed onto the food, resulting in better cooking performance.

Description

Technical Field

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

[0002] As people's living standards improve, cooking methods have become increasingly diverse, leading to the emergence of various types of kitchen appliances, such as air fryers, ovens, and microwave ovens. However, multiple appliances occupy a significant amount of kitchen space and can easily create clutter. Therefore, appliance manufacturers have begun to integrate different household appliances into a single unit. The air fryer / microwave oven is a kitchen appliance that integrates the functions of an air fryer and a microwave oven. Because it utilizes high-temperature air circulation and / or microwave radiation to quickly heat, defrost, and cook food while occupying minimal space, it has a promising market prospect.

[0003] Existing air fryer microwave ovens generally employ two or more heating systems, such as a lower heating element at the bottom of the cavity, an upper heating element at the top, and a hot air heating element on the outer side of the top. This results in a complex structure, complicated assembly process, low production efficiency, and high cost. For example, prior art publication CN222937862U discloses an air fryer microwave oven including a cavity with a hot air structure at the top. The hot air structure includes heating elements located within the cavity. The cavity includes a top plate with a first clearance portion protruding upwards to accommodate the heating elements. While this saves cavity space, the first clearance portion occupies a large space in the radial direction of the fan, resulting in a smaller fan size and reduced airflow. Furthermore, the heating elements are located to the side of the fan, preventing the fan from directly blowing heat from the heating elements onto the food, thus affecting cooking performance. Utility Model Content

[0004] In view of this, the present invention aims to propose an air fryer microwave oven to solve the problems of the existing technology, such as the small size of the fan, the limited air volume, and the inability of the fan to directly blow the heat from the heating element onto the food, thus affecting the cooking effect.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] An air fryer microwave oven includes a cavity and a circulating air duct chamber disposed on the upper part of the cavity, wherein the cavity and the circulating air duct chamber are separated by a top plate of the cavity, a heating element is disposed near the top of the cavity, the circulating air duct chamber is located above the heating element, a fan is disposed inside the circulating air duct chamber, and the heating element is located on the axially lower side of the fan.

[0007] Furthermore, the outer diameter R of a single fan is 1 / 4 to 1 / 2 of the width w of the cavity.

[0008] Furthermore, the fan blades are configured with an irregular blade structure.

[0009] Furthermore, the heating element is configured with a wavy structure.

[0010] Furthermore, a baffle plate is provided in the circulating air duct chamber, which divides the circulating air duct chamber into two hot air chambers, left and right. The lower part of each hot air chamber is set with a hollow structure corresponding to the position of the top plate. A first fan and a second fan are respectively provided in the two hot air chambers, wherein the first fan is located on the left and the second fan is located on the right, and the first fan and the second fan rotate in opposite directions.

[0011] Furthermore, the heating element includes an inlet section, an outlet section, and a bending section, wherein there are two bending sections, and the two bending sections are respectively located below the first fan and the second fan. The two bending sections are connected by a U-shaped section in the middle, and the two bending sections are arranged in a mirror symmetrical manner with the central axis of the U-shaped section as the axis of symmetry.

[0012] Furthermore, a fixing structure is provided on each of the bending segments, and the bending segments are fixedly connected to the top plate of the cavity through the fixing structure.

[0013] Furthermore, the bending section includes a vertical pipe section, a horizontal pipe section, an inclined pipe section, and an arc-shaped section. The vertical pipe section is located on the side closest to the sidewall of the cavity. The vertical pipe section extends in a front-to-back direction, and the extension direction of the vertical pipe section is parallel to the sidewall of the cavity. The rear end of the vertical pipe section is connected to an inlet section or an outlet section. The front end of the vertical pipe section is connected to a horizontal pipe section. The horizontal pipe section extends in a direction close to the U-shaped section. The end of the horizontal pipe section away from the vertical pipe section is connected to an inclined pipe section. The rear side of the inclined pipe section is inclined in a direction away from the U-shaped section. The other end of the inclined pipe section is connected to an arc-shaped section, and the other end of the arc-shaped section is connected to the U-shaped section.

[0014] Furthermore, both the inlet and outlet sections pass through the right side wall of the cavity, the inlet section extends in the left-right direction, and the inlet section is substantially parallel to the front baffle of the cavity.

[0015] Furthermore, the circulating air duct chamber includes a heat insulation cover, which includes an outer heat insulation cover and an inner heat insulation cover. Both the outer heat insulation cover and the inner heat insulation cover are configured to bulge upwards. The inner heat insulation cover is located at the lower part of the outer heat insulation cover, and a motor is located on the outside of the outer heat insulation cover.

[0016] Compared with existing technologies, the air fryer microwave oven described in this utility model has the following advantages:

[0017] Since there are no heating elements in the top-mounted dual-circulation air duct chamber, the fan is only responsible for circulating air into the oven cavity. At this time, the diameter of the fan blades can be made larger, and the air volume blown out by the fan will also be greater. The top of the oven cavity is equipped with wave-shaped heating elements, which are arranged directly below the fan. This allows the heat from the heating elements to be blown directly onto the food, resulting in better cooking effects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the air fryer microwave oven described in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the inner heat insulation cover structure described in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the inner heat insulation cover from another perspective according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional view of the air fryer microwave oven described in this embodiment of the present invention;

[0022] Figure 4a for Figure 4 A magnified view of the selected area;

[0023] Figure 5 This is a schematic diagram of the structure of the air fryer microwave oven of this utility model from another perspective;

[0024] Figure 5a for Figure 5 A magnified view of the selected area.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Circulating air duct chamber, 11-Heating element, 111-Inlet section, 112-Outlet section, 113-Bent section, 1131-Vertical pipe section, 1132-Horizontal pipe section, 1133-Inclined pipe section, 1134-Arc-shaped section, 114-U-shaped section, 115-Fixed structure, 12-Motor, 121-First motor, 122-Second motor, 13-Heat insulation cover, 131-Outer heat insulation cover, 132-Inner heat insulation cover, 14-Baffle plate, 151-First fan, 152-Second fan, 2-Cavity, 21-Rear wall, 22-Top plate, 23-Front baffle, 24-Bottom plate Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. In addition, the orientations involved in the following specific embodiments are briefly explained: the directions or positional relationships indicated by "front," "rear," "up," "down," "left," "right," "top," and "bottom" mentioned in the embodiments refer to the orientations or positional relationships shown in the accompanying drawings. The term "on..." means directly or indirectly supported by the... element.

[0028] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] like Figures 1-5 As shown, an air fryer microwave oven includes a cavity 2 and a circulating air duct chamber 1 disposed on the upper part of the cavity 2. The cavity 2 and the circulating air duct chamber 1 are separated by a top plate 22 of the cavity 2. A heating element 11 is disposed near the top of the cavity 2. The top plate 22 of the cavity 2 is configured with a hollow structure at least at the position corresponding to the circulating air duct chamber 1, so that airflow can enter the cavity 2 through the top plate 22. The circulating air duct chamber 1 is located above the heating element 1. A fan is disposed inside the circulating air duct chamber 1, so that the heating element 11 is located on the axial lower side of the fan. The heating element 1 does not occupy the space in the radial direction of the fan, so the diameter of the fan blades can be made larger and the air volume blown by the fan will be greater. The heating element is arranged directly below the fan, so that the heat of the heating element can be blown directly onto the food, resulting in good cooking effect.

[0030] The circulating air duct chamber 1 includes a motor 12, a heat insulation cover 13 and a fan. The space formed by the heat insulation cover 13 and the top plate 22 of the cavity 1 is the air duct chamber. The fan is installed inside the air duct chamber. The motor 12 is located on the upper part of the heat insulation cover 13, and the motor shaft of the motor 12 passes through the heat insulation cover 13 and is connected to the fan, thereby driving the fan to operate normally.

[0031] Specifically, the circulating air duct chamber 1 is configured as a double-circulating air duct chamber. A baffle plate 14 is installed inside the air duct chamber. The upper end of the baffle plate 14 is connected to a heat insulation cover 13, and the lower end of the baffle plate 14 is connected to the top plate 22 of the cavity 2. Thus, the circulating air duct chamber 1 is divided into two hot air chambers, left and right, by the baffle plate 14. The lower part of each hot air chamber, corresponding to the position on the top plate 22, is designed with a hollow structure, allowing both hot air chambers to communicate with the interior of the cavity 2. The corresponding fans include a first fan 151 and a second fan 152. The first fan 151 is located on the left side, and the second fan 152 is located on the right side. The first fan 151 and the second fan 152 rotate in opposite directions; that is, one fan is connected to a forward-rotating motor, and the other to a reverse-rotating motor, facilitating airflow.

[0032] Furthermore, since the position of the heating element 11 provides ample space for the fans, both the first fan 151 and the second fan 152 can be configured with relatively large diameters. Preferably, with the width w of the cavity 2 as a reference, the outer diameter R of a single fan is 1 / 4 to 1 / 2 of the width w. This increases the airflow by enlarging the fans, thereby improving the cooking effect.

[0033] Specifically, the blades of both the first fan 151 and the second fan 152 are configured with irregular blade structures.

[0034] In this embodiment, the heat insulation cover 13 includes an outer heat insulation cover 131 and an inner heat insulation cover 132. Both the outer heat insulation cover 131 and the inner heat insulation cover 132 are designed to bulge upwards. The inner heat insulation cover 132 is located below the outer heat insulation cover 131. The lugs at both ends of the outer heat insulation cover 131 are fixedly connected to the top plate 22. The lugs at both ends of the inner heat insulation cover 132 are located above the lugs of the outer heat insulation cover 131 and fit against the lugs of the outer heat insulation cover 131. Thus, the lugs fix both the outer heat insulation cover 131 and the inner heat insulation cover 132 to the top plate 22. The two layers of heat insulation covers can provide sufficient insulation for the circulating air duct chamber.

[0035] A first motor 121 and a second motor 122 are provided on the outside of the outer heat insulation cover 131. The first motor 121 corresponds to the position of the first fan 151, and the second motor 122 corresponds to the position of the second fan 152. Correspondingly, the parts of the heat insulation cover that correspond to the first motor 121 and the second motor 122 are all designed with a downward recessed structure to accommodate the motors and prevent the motors from being too high and affecting the overall height of the microwave oven.

[0036] As one embodiment of this utility model, in order to ensure that the heating element is located at the bottom of the fan and that each fan has a corresponding heating element structure at the bottom, the structure of the heating element 11 can be set as a wavy structure. Specifically, the heating element 11 includes an inlet section 111, an outlet section 112, and a bending section 113, wherein there are two bending sections 113, and the two bending sections 113 are respectively located at the bottom of the first fan 151 and the second fan 152, increasing the amount of hot air flowing vertically into the cavity 2. The two bending sections 113 are connected by a U-shaped section 114 in the middle. With the central axis of the U-shaped section 114 as the axis of symmetry, the two bending sections 113 are arranged in a mirror symmetrical manner, so that the air volume on both sides is the same, which facilitates the uniform heating of food inside the cavity 2.

[0037] Specifically, the bent section 113 is configured as an approximately "U"-shaped structure. Taking the left bent section 113 as an example, one end of the left bent section 113 near the left side wall of the cavity 2 is connected to the inlet section 111, and the other end of the bent section 113 is connected to the U-shaped section 114; the right bent section 113 near the right side wall of the cavity 2 is connected to the outlet section 112, and the other end of the right bent section 113 is connected to the U-shaped section 114.

[0038] Furthermore, both the inlet section 111 and the outlet section 112 pass through the right side wall of the cavity 2. The inlet section 111 extends in the left-right direction and is basically parallel to the front baffle 23 of the cavity 2.

[0039] In this embodiment, the inlet segment 111 and the outlet segment 112 can be interchanged.

[0040] A fixing structure 115 is provided on each bending section 113. The bending section 113 is fixedly connected to the top plate of the cavity 2 through the fixing structure to ensure the overall working stability of the heating tube 11 and prevent the heating tube from falling off.

[0041] Furthermore, the bent section 113 includes a vertical pipe section 1131, a horizontal pipe section 1132, an inclined pipe section 1133, and an arc-shaped section 1134. The vertical pipe section 1131 is located on the side closest to the side wall of the cavity 2. The vertical pipe section 1131 extends in the front-to-back direction, and its extension direction is parallel to the side wall of the cavity 2. The rear end of the vertical pipe section 1131 connects to the inlet section 111 or the outlet section 112, and the front end of the vertical pipe section 1131 connects to... A horizontal tube section 1132 is connected to the vertical tube section 1131, extending towards the U-shaped section 114. One end of the horizontal tube section 1132, away from the vertical tube section 1131, connects to an inclined tube section 1133. The rear side of the inclined tube section 1133 slopes away from the U-shaped section 114. The other end of the inclined tube section 1133 connects to an arc-shaped section 1134, and the other end of the arc-shaped section 1134 connects to the U-shaped section 114. This bend in the tube increases the heating length of the heating element 11 compared to a straight heating element, improving heating efficiency and thus cooking efficiency. The inclined tube section is positioned to slope away from the U-shaped section 114, ensuring that the inclined tube section 1133 is essentially directly below the fan, allowing the fan to directly blow heat onto the food.

[0042] In this embodiment, the plane formed by the entire heating element 11 is parallel to and close to the top plate 22 of the cavity 2, thus avoiding interference between the heating element 11 and the food inside the cavity 2. Furthermore, the heating element 11 is integrally molded, resulting in a simple structure, high production efficiency, and low cost.

[0043] The air fryer microwave oven provided by this utility model has no heating element in the top-mounted double-circulation air duct chamber. The fan is only responsible for circulating air into the oven cavity. At this time, the diameter of the fan blades can be made larger, and the air volume blown by the fan will also be greater. The top of the oven cavity is equipped with a wave-shaped heating element, which is arranged directly below the fan. At this time, the heat of the heating element can be blown directly onto the food, resulting in a good cooking effect.

[0044] 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, comprising a cavity (2) and a circulating air duct chamber (1) disposed on the upper part of the cavity (2), wherein the cavity (2) and the circulating air duct chamber (1) are separated by a top plate (22) of the cavity (2), characterized in that, A heating tube (11) is installed near the top of the cavity (2). The circulating air duct chamber (1) is located above the heating tube (11). A fan is installed inside the circulating air duct chamber (1). The heating tube (11) is located on the axial lower side of the fan.

2. The air fryer microwave oven according to claim 1, characterized in that, The outer diameter R of a single fan is 1 / 4 to 1 / 2 of the width w of the cavity (2).

3. The air fryer microwave oven according to claim 1, characterized in that, The fan blades are designed with an irregular blade structure.

4. The air fryer microwave oven according to claim 1, characterized in that, The heating element (11) is configured with a wavy structure.

5. The air fryer microwave oven according to claim 1, characterized in that, A baffle plate (14) is provided in the circulating air duct chamber (1), which divides the circulating air duct chamber (1) into two hot air chambers, left and right. The lower part of each hot air chamber is set with a hollow structure corresponding to the position of the top plate (22). A first fan (151) and a second fan (152) are respectively provided in the two hot air chambers. The first fan (151) is located on the left and the second fan (152) is located on the right. The first fan (151) and the second fan (152) rotate in opposite directions.

6. The air fryer microwave oven according to claim 5, characterized in that, The heating element (11) includes an inlet section (111), an outlet section (112), and a bending section (113). There are two bending sections (113), which are located at the lower part of the first fan (151) and the second fan (152), respectively. The two bending sections (113) are connected by a U-shaped section (114) in the middle. With the central axis of the U-shaped section (114) as the axis of symmetry, the two bending sections (113) are arranged in a mirror symmetric manner.

7. The air fryer microwave oven according to claim 6, characterized in that, A fixing structure (115) is provided on each of the bending segments (113), and the bending segments (113) are fixedly connected to the top plate of the cavity (2) through the fixing structure (115).

8. The air fryer microwave oven according to claim 6, characterized in that, The bent section (113) includes a vertical pipe section (1131), a horizontal pipe section (1132), an inclined pipe section (1133), and an arc-shaped section (1134). The vertical pipe section (1131) is located on the side near the side wall of the cavity (2). The vertical pipe section (1131) extends in the front-to-back direction, and the extension direction of the vertical pipe section (1131) is parallel to the side wall of the cavity (2). The rear end of the vertical pipe section (1131) is connected to the inlet section (111) or the outlet section (112). 31) is connected to a horizontal pipe section (1132) at its front end. The horizontal pipe section (1132) extends toward the U-shaped section (114). The end of the horizontal pipe section (1132) away from the vertical pipe section (1131) is connected to an inclined pipe section (1133). The rear side of the inclined pipe section (1133) is inclined toward the U-shaped section (114). The other end of the inclined pipe section (1133) is connected to an arc-shaped section (1134). The other end of the arc-shaped section (1134) is connected to the U-shaped section (114).

9. The air fryer microwave oven according to claim 6, characterized in that, The inlet section (111) and outlet section (112) both pass through the right side wall of the cavity (2). The inlet section (111) extends in the left-right direction and is basically parallel to the front baffle (23) of the cavity (2).

10. The air fryer microwave oven according to claim 1, characterized in that, The circulating air duct chamber (1) includes a heat insulation cover (13), which includes an outer heat insulation cover (131) and an inner heat insulation cover (132). Both the outer heat insulation cover (131) and the inner heat insulation cover (132) are configured to protrude upwards. The inner heat insulation cover (132) is located at the lower part of the outer heat insulation cover (131), and a motor is provided on the outside of the outer heat insulation cover (131).

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