Double-pan air fryer capable of blowing air from top to bottom

Abstract

The utility model relates to an upper-top and lower-back blowing double-pan air fryer, and aims to solve the problems that the temperature difference between an upper cavity and a lower cavity of an existing same upper-lower double-pan air fryer is large, food with the high-temperature requirement is difficult to process and cook at the same time, and the food cooking and processing effect is poor. The double-pan air fryer is characterized in that the height of a top hardware heat insulation layer of a lower hardware heat insulation layer at a lower heating pipe at the top of a lower cavity of the double-pan air fryer is increased from the front part of one side of an opening of a machine body to the back part to form a curved surface, a cap edge is arranged, and a back hardware heat insulation cover fixed on the lower hardware heat insulation layer is arranged on the outer side of a lower hardware centrifugal fan blade on the back part of the lower hardware heat insulation layer; a pot opening of the pot body below the cap edge abuts against the top hardware heat insulation layer, a gap of the curved surface is formed between the top hardware heat insulation layer on the back and the pot opening of the pot body below the cap edge, an air outlet is formed in the upper portion of the lining hardware heat insulation layer on the back of the gap, and an air inlet is formed in the lower portion of the lining hardware heat insulation layer on the back below the air outlet. And the air inlet holes are aligned with the honeycomb holes in the front end of the back part of the lower pot body.

Description

Technical Field

[0001] This utility model relates to an air fryer, specifically a double-pot air fryer with top and bottom air blowing. Background Technology

[0002] An air fryer is a new type of household appliance that uses high-speed air circulation technology to fry food. Compared to traditional electric fryers, it reduces oil content by up to 80%, is easy to clean, and is both safe and economical, making it very popular. To improve efficiency, some air fryers feature double-layered designs, with the upper layer containing a heating element and fan, and the lower layer containing another heating element and fan, as seen in Chinese patent application number 202322669357.6, authorized on April 26, 2024, entitled "A Double-Layer Air Fryer." However, these products and similar products often have a significant temperature difference between the upper and lower chambers, making it difficult to simultaneously process foods requiring high temperatures. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a top-and-bottom air fryer with dual-pot design, which solves the technical problem of large temperature difference between the upper and lower chambers of existing dual-pot air fryers, making it difficult to simultaneously process foods requiring high temperatures, resulting in poor food processing effects. This objective is achieved through the following technical solution.

[0004] A top-and-bottom air fryer with dual pots and airflow, comprising upper and lower layers and corresponding upper and lower cavities; the lower cavity has a lower metal centrifugal fan and a lower plastic centrifugal fan on its back, and the motor shaft at the lower motor on the outside of the lower metal insulation layer inside the body is connected to the lower metal centrifugal fan and the lower plastic centrifugal fan; a lower heating element is located at the top of the lower cavity; the upper cavity has an upper heating element and an upper metal centrifugal fan on its top, and the upper plastic centrifugal fan and an upper motor on the outside of the upper metal insulation layer inside the top of the body, with the motor shaft at the upper motor connected to the upper metal centrifugal fan and the upper plastic centrifugal fan; the upper and lower cavities each have an opening on one side for inserting the upper pot and the lower pot. The key structural design features a curved top metal heat insulation layer at the lower heating element of the lower cavity, where the height of the top metal heat insulation layer increases from the front of the opening side of the machine body towards the back. A cap-shaped edge is provided on the top metal heat insulation layer above the pot opening in the lower cavity. The inner lining metal heat insulation layer at the lower metal centrifugal fan blade is integrally formed with the top metal heat insulation layer to correspond to the opening on one side of the machine body. A back metal heat insulation cover, fixed to the lower metal heat insulation layer, is provided on the outer side of the lower metal centrifugal fan blade on the back of the lower metal heat insulation layer. The pot opening at the lower pot body at the cap-shaped edge abuts against the top metal heat insulation layer. A gap, as described above, is provided between the top metal heat insulation layer and the pot opening at the lower pot body at the back. The upper part of the inner metal heat insulation layer on the back has an air vent, and the lower part of the inner metal heat insulation layer below the air vent has an air inlet. The air inlet is aligned with the honeycomb opening at the front end of the back of the lower pot body. The upper heating element and the upper centrifugal fan blade are installed in the groove of the top metal heat insulation layer of the upper cavity. The outer diameter of the upper plastic centrifugal fan blade is provided with an upper air guide shroud fixed to the top of the top metal heat insulation layer, and the outer diameter of the lower plastic centrifugal fan blade is provided with a lower air guide shroud fixed to the back of the back metal heat insulation shroud. The machine body has an air outlet and an air inlet. The upper air guide shroud and the lower air guide shroud are respectively connected to the air outlet of the machine body. The upper heating element, the upper motor, the lower heating element, and the lower motor are respectively connected to the power board assembly inside the machine body through wiring.

[0005] The lower pot body has symmetrically distributed and raised guide ribs on the inner wall of the opposite side of its back front. The guide ribs are integrally stamped with the lower pot body; or the guide ribs are set on a guide component, which is installed on the inner wall of the lower pot body. The above structure further enhances the air guiding and circulation effect inside the lower pot.

[0006] The upper cavity has a power board assembly and an external power cord located on the back of the upper cavity, near the partition between the upper and lower cavities. A PCB control assembly is located at the top corner of the machine body, above the handle on the side of the upper pot extending from the upper cavity. The PCB control assembly is connected to the power board assembly via wiring. This is an embodiment of installing the power board assembly via a partition inside the machine body.

[0007] The outer side of the upper handle is aligned vertically or diagonally with the outer side of the lower handle, and the outer sides of the upper and lower pot bodies are aligned. The outer diameters of the back of the upper and lower cavities are aligned or stepped. The internal volumes of the upper and lower pot bodies may be the same or different. The volumes of the upper and lower pot bodies, the space at the back of the machine body, and the alignment of the handle side are set according to the actual situation.

[0008] NTC temperature sensors are installed on one side of the upper and lower heating elements within the upper and lower cavities, respectively, extending from the upper and lower metal insulation layers. These NTC temperature sensors are connected to the power board assembly inside the machine via wiring. This allows for more accurate recording of the temperature within the upper and lower cavities using the NTC temperature sensors, facilitating automatic adjustment of the control program.

[0009] This utility model has a simple and reasonable structural design, good airflow heating effect, and fast food cooking and processing. In particular, it is convenient to process foods that require high temperature cooking simultaneously in the upper and lower chambers. It is suitable for use as a double-pot air fryer with top and bottom air blowing, as well as a structural improvement of similar products. Attached Figure Description

[0010] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present invention, in which the arrows indicate the direction of hot air circulation inside the upper and lower pots, respectively.

[0011] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure.

[0012] Figure 3 yes Figure 2 A schematic diagram of the upper and lower pot structure.

[0013] Figure 4 yes Figure 2 A schematic diagram of the rear structure of the upper and lower metal heat insulation layers. The outer shell, partitions and other components of the machine body are omitted in the diagram.

[0014] Attached Figure Numbers and Names: 1. PCB Control Components, 2. Upper Metal Heat Insulation Layer, 3. Upper Heating Element, 4. Upper Handle, 5. Upper Pot Body, 6. Upper Grill Rack, 7. Lower Metal Heat Insulation Layer, 8. Lower Heating Element, 9. Lower Handle, 10. Lower Pot Body, 11. Lower Grill Rack, 12. Lower Metal Centrifugal Fan, 13. Lower Plastic Centrifugal Fan, 14. Lower Motor, 15. Power Board Assembly, 16. Air Outlet, 17. Upper Metal Centrifugal Fan, 18. Upper Plastic Centrifugal Fan, 19. Upper Motor, 20. Rear Metal Heat Insulation Cover, 21. NTC Temperature Sensor. Implementation

[0015] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figure 1-4As shown, the air fryer is divided into upper and lower layers, and corresponding upper and lower cavities. The lower cavity of the air fryer is equipped with a lower metal centrifugal fan 12 and a lower plastic centrifugal fan 13 on the back. The motor shaft at the lower motor 14 outside the lower metal heat insulation layer 7 inside the machine body is connected to the lower metal centrifugal fan and the lower plastic centrifugal fan. The lower heating tube 8 is provided at the top of the lower cavity. The upper heating tube 3 and the upper metal centrifugal fan 17 are arranged in sequence at the top of the upper cavity. The upper plastic centrifugal fan 18 and the upper motor 19 are arranged in sequence outside the upper metal heat insulation layer 2 inside the machine body at the top. The motor shaft at the upper motor is connected to the upper metal centrifugal fan and the upper plastic centrifugal fan. The upper and lower cavities are respectively provided with openings and upper pot body 5 and lower pot body 10 for insertion on one side. The height of the top metal heat insulation layer at the lower heating tube in the lower cavity increases from the front of the opening side of the machine body towards the back, forming a curved surface. The top metal heat insulation layer above the pot opening in the lower cavity has a cap edge. The inner lining metal heat insulation layer at the lower metal centrifugal fan blade is integral with the top metal heat insulation layer to form the lower metal heat insulation layer corresponding to the opening on one side of the machine body. A back metal heat insulation cover 20, fixed to the lower metal heat insulation layer, is provided on the outer side of the lower metal centrifugal fan blade on the back of the lower metal heat insulation layer. The pot opening at the lower pot body at the cap edge abuts against the top metal heat insulation layer. A gap, described above, exists between the top metal heat insulation layer and the pot opening at the lower pot body at the back. The inner lining metal heat insulation layer at the gap... The upper part of the metal heat insulation layer is provided with an air outlet, and the lower part of the inner metal heat insulation layer on the back below the air outlet is provided with an air inlet. The air inlet is aligned with the honeycomb opening at the front end of the back of the lower pot body. The upper heating element and the upper centrifugal fan are provided in the groove of the top metal heat insulation layer of the upper cavity. The outer diameter of the upper plastic centrifugal fan is provided with an upper air guide shroud fixed to the top of the top metal heat insulation layer, and the outer diameter of the lower plastic centrifugal fan is provided with a lower air guide shroud fixed to the back of the back metal heat insulation shroud. The machine body is provided with an air outlet and an air inlet. The upper air guide shroud and the lower air guide shroud are respectively connected to the air outlet of the machine body. The upper heating element, the upper motor, the lower heating element, and the lower motor are respectively connected to the power board assembly 15 inside the machine body through wiring.

[0016] The lower pot body has symmetrically distributed and raised guide ribs on the inner wall of the opposite side of its back front. These guide ribs are integrally stamped with the lower pot body; or the guide ribs are set on a guide component, which is installed on the inner wall of the lower pot body. A power board assembly and an external power cord are located on the back of the upper cavity at the partition between the upper and lower cavities. A PCB control assembly 1 is located at the top corner of the machine body above the handle on the side of the upper pot body extending out of the upper cavity. The PCB control assembly is connected to the power board assembly via wiring. The outer side of the upper handle is aligned diagonally with the lower handle below, and with the outer sides of the upper and lower pot bodies. The outer diameters of the machine body are aligned on the back of the upper and lower cavities, and the internal volumes of the upper and lower pot bodies are the same. NTC temperature sensors 21 extend from the upper and lower metal insulation layers on one side of the upper and lower heating tubes in the upper and lower cavities, respectively. These NTC temperature sensors are connected to the power board assembly inside the machine body via wiring. An upper grill rack 6 is located inside the upper pot body, and a lower grill rack 11 is located inside the lower pot body.

[0017] The upper pot of this double-pot air fryer uses a back-blowing airflow system. Air is gathered at the center of the upper metal centrifugal fan blades, then blown through the surrounding walls of the upper metal insulation layer onto the surrounding walls of the upper pot body. It then flows upwards from around the grill rack, finally passing through the surface of the upper heating element and returning to the center of the upper metal centrifugal fan blades. The lower pot uses a back-blowing airflow system. Air is gathered at the center of the lower metal centrifugal fan blades and, guided by the lower metal insulation layer, blown downwards through the interface of the lower insulation layer onto the lower heating element. This heat-generated air is then guided downwards along the lower insulation layer towards the handle and into the lower pot body. From there, it is blown from the lower handle towards the front of the lower pot body, passing through the honeycomb openings at the front of the lower pot body and finally returning to the center of the lower metal centrifugal fan blades.

[0018] In use, the lower pot can be removed from the double-pot air fryer using the lower handle, or the upper pot can be removed using the upper handle. After placing food on the lower rack inside the lower pot, the lower pot can be placed back into the lower unit using the lower handle, or food can be placed on the upper rack inside the upper pot, and the upper pot can be placed back into the upper unit using the upper handle. Finally, press the corresponding cooking button on the control panel of the PCB control component, and the corresponding food in the lower or upper pot will be automatically processed and cooked.

Claims

1. A double-pot air fryer with top and bottom airflow, the air fryer is divided into upper and lower layers and corresponding upper and lower cavities; the lower cavity of the air fryer is provided with a lower metal centrifugal fan (12) and a lower plastic centrifugal fan (13) on the back, the motor shaft at the lower motor (14) outside the lower metal heat insulation layer (7) inside the machine body is connected to the lower metal centrifugal fan and the lower plastic centrifugal fan, and the lower heating tube (8) is provided at the top of the lower cavity; the upper cavity is provided with an upper heating tube (3) and an upper metal centrifugal fan (17) in sequence at the top, the upper plastic centrifugal fan (18) and an upper motor (19) in sequence outside the upper metal heat insulation layer (2) inside the machine body at the top, the motor shaft at the upper motor is connected to the upper metal centrifugal fan and the upper plastic centrifugal fan; the upper and lower cavities are respectively provided with an opening and an upper pot body (5) and a lower pot body (10) for insertion; characterized in that The height of the top metal heat insulation layer (7) at the lower heating tube (8) at the top of the lower cavity increases from the front of the opening side of the machine body to the back, forming a curved surface. The top metal heat insulation layer at the opening side of the machine body above the pot opening at the lower pot body (10) in the lower cavity is provided with a cap edge. The inner lining metal heat insulation layer at the lower metal centrifugal fan (12) is integral with the top metal heat insulation layer to form the lower metal heat insulation layer corresponding to the opening side of the machine body. The outer side of the lower metal centrifugal fan on the back of the lower metal heat insulation layer is provided with a back metal heat insulation cover (20) fixed to the lower metal heat insulation layer. The pot opening at the lower pot body at the cap edge abuts against the top metal heat insulation layer. There is a gap between the top metal heat insulation layer at the back and the pot opening at the lower pot body. The inner lining metal heat insulation layer at the gap is located at the back. The upper part is provided with an air outlet, and the lower part of the inner metal heat insulation layer on the back below the air outlet is provided with an air inlet. The air inlet is aligned with the honeycomb opening at the front end of the back of the lower pot body. The upper metal heat insulation layer (2) of the upper cavity is provided with an upper heating tube (3) and an upper metal centrifugal fan (17) in the groove of the top metal heat insulation layer. The outer diameter of the upper plastic centrifugal fan (18) is provided with an upper air guide hood fixed to the top of the top metal heat insulation layer. The outer diameter of the lower plastic centrifugal fan (13) is provided with a lower air guide hood fixed to the back of the back metal heat insulation hood. The machine body is provided with an air outlet and an air inlet. The upper air guide hood and the lower air guide hood are respectively connected to the air outlet of the machine body. The upper heating tube, the upper motor (19), the lower heating tube, and the lower motor (14) are respectively connected to the power board assembly (15) inside the machine body through lines.

2. The dual-pot air fryer with top and bottom airflow as described in claim 1, characterized in that... The lower pot body (10) has equidistant and protruding guide ribs on the inner wall of the opposite side of the back front end. The guide ribs are integrally stamped with the lower pot body; or the guide ribs are set on the guide component, and the guide component is installed on the inner wall of the lower pot body.

3. The dual-pot air fryer with top and bottom airflow as described in claim 1, characterized in that... The upper cavity has a power board assembly (15) and an external power cord at the back of the upper cavity, and a PCB control assembly (1) is provided at the top corner of the machine body above the handle (4) on the side of the upper pot body (5) extending out of the upper cavity. The PCB control assembly is connected to the power board assembly through a line.

4. The dual-pot air fryer with top and bottom airflow as described in claim 3, characterized in that... The outer side of the upper handle (4) is aligned with the lower handle (9) below, and the outer sides of the upper pot body (5) and the lower pot body (10) are aligned vertically or diagonally. The outer diameters of the back of the upper and lower cavities are aligned or stepped. The internal volumes of the upper pot body and the lower pot body are the same or different.

5. The dual-pot air fryer with top and bottom airflow as described in claim 1, characterized in that... The upper heating tube (3) and lower heating tube (8) in the upper and lower cavities are respectively provided with NTC temperature sensors (21) extending from one side of the upper metal heat insulation layer (2) and lower metal heat insulation layer (7). The NTC temperature sensors are respectively connected to the power board assembly (15) inside the machine through lines.

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