Air fryer

Abstract

The utility model relates to an air fryer which comprises a machine shell and a motor assembly, the machine shell comprises an outer shell, a lining and a wind scooper, the lining and the wind scooper are both arranged in the outer shell, the wind scooper is arranged on the upper side of the lining, a cooking cavity is defined by the wind scooper and the lining, and the motor assembly comprises a driving motor, a motor base, a first fan and a supporting column. The first fan is arranged in the cooking cavity, the motor base is arranged on the upper side of the wind scooper, the driving motor is arranged on the motor base and connected with the first fan, and the supporting column is arranged between the motor base and the wind scooper in a stopping mode so that a heat insulation gap can be formed between the motor base and the wind scooper. The air fryer is low in production cost and good in heat insulation effect.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, specifically to an air fryer. Background Technology

[0002] An air fryer is a cooking appliance that uses hot air to "fry" food. Instead of hot oil, the air fryer uses hot air to create a circulating hot airflow in the sealed pot to cook the food. At the same time, the hot air can also blow away the moisture on the surface of the food, giving the ingredients an effect similar to deep-frying.

[0003] In related technologies, in order to reduce the temperature of the motor mount, manufacturers usually place a heat insulation plate between the air guide and the motor mount to reduce the heat transferred from the air guide to the motor mount and reduce the risk of the motor mount melting. However, the above structure has problems such as high cost and poor heat insulation effect. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] Therefore, this utility model proposes an air fryer that has a low cost and good heat insulation effect.

[0006] The air fryer of this utility model includes: a housing, the housing comprising an outer shell, an inner liner, and an air guide shroud, the inner liner and the air guide shroud being disposed within the outer shell, the air guide shroud being disposed on the upper side of the inner liner and forming a cooking cavity with the inner liner; and a motor assembly, the motor assembly comprising a drive motor, a motor mount, a first fan, and a support column, the first fan being disposed within the cooking cavity, the motor mount being disposed on the upper side of the air guide shroud, the drive motor being disposed on the motor mount and connected to the first fan, and the support column stopping between the motor mount and the air guide shroud to form a heat insulation gap between the motor mount and the air guide shroud.

[0007] According to this invention, the air fryer has a heat-insulating gap between the motor base and the air guide shroud, which prevents direct contact between them. This reduces the heat transferred from the air guide shroud to the motor base. Furthermore, the support column limits the axial movement of the motor base and air guide shroud, preventing them from becoming too close together or touching during assembly, thus improving assembly accuracy and providing better heat insulation. Compared to designs that use a heat-insulating plate between the motor base and air guide shroud, this invention reduces production costs.

[0008] Optionally, the heat insulation gap is H, where 0.2mm ≤ H ≤ 1.5mm. By setting the heat insulation gap within the above parameter range, the air fryer of this invention can, on the one hand, ensure effective heat insulation of the motor base, and on the other hand, prevent excessive hot air from escaping through the heat insulation gap, thereby ensuring that the air fryer has a better ventilation effect.

[0009] Optionally, either the motor mount or the air guide shroud can be detachably connected to the support column. This allows the motor mount, air guide shroud, and support column to be manufactured separately, enabling the support column to be made of high-temperature resistant materials, thus facilitating processing and material selection.

[0010] Optionally, the upper end of the support column is snapped into the motor mount, and the lower end of the support column abuts against the air guide shroud. This invention's air fryer, by configuring the support column with the above-described structure, facilitates the installation of the support column and simplifies the assembly process.

[0011] Optionally, the motor base has a slot with a lower opening, and the inner peripheral wall of the slot is provided with a rib. The support column is inserted into the slot through the lower opening and engages with the rib. By connecting the support column and the motor base in the above manner, the air fryer of this invention can reduce the risk of the support column becoming detached from the motor base and improve the reliability of the support column connection.

[0012] Optionally, there are multiple support columns, which are arranged circumferentially around the motor base and positioned near the edge of the motor base. By using multiple support columns, the air fryer of this invention improves the stability of the motor base installation and helps ensure the consistency of dimensions across the insulation gap.

[0013] Optionally, one of the motor base and the air guide shroud is provided with a positioning groove, and the other of the motor base and the air guide shroud is provided with a positioning protrusion, which engages within the positioning groove. The air fryer of this invention, through the cooperation of the positioning groove and the positioning protrusion, can pre-position the motor base during installation, thereby improving the installation efficiency and accuracy.

[0014] Optionally, the air fryer further includes fasteners that pass through the positioning protrusion and the positioning groove. This invention, by using fasteners at the positioning protrusion and positioning groove, can both fix the motor base and provide positioning functionality, thus facilitating the fixed installation of the air guide and motor base, and resulting in a simple structure.

[0015] Optionally, the positioning groove is disposed on the motor base and arranged adjacent to the edge of the motor base, and the positioning protrusion is disposed on the air guide cover; and / or, there are multiple positioning grooves, which are arranged at intervals along the circumference of the motor base, and there are multiple positioning protrusions that correspond one-to-one with the multiple positioning grooves. The air fryer of this utility model designs the positioning protrusions and positioning grooves as described above, which can improve the stability of the motor base fixed to the air guide cover, and ensures stable installation without easy shaking.

[0016] Optionally, the upper surface of the air guide shroud includes a first mating surface and a second mating surface. The second mating surface surrounds the outer periphery of the first mating surface. The first mating surface and the motor base define the heat insulation gap, and the second mating surface and the motor base define a heat insulation cavity. The motor assembly also includes a second fan, which is disposed within the heat insulation cavity and connected to the drive motor. This invention, by providing a heat insulation cavity and arranging a second fan within it, can cool the motor base and drive motor, thereby extending their service life. Attached Figure Description

[0017] Figure 1 Schematic diagram of an air fryer according to an embodiment of the present invention.

[0018] Figure 2 This is a partial cross-sectional view of the air fryer according to an embodiment of the present invention.

[0019] Figure 3 yes Figure 2 A magnified view of A in the middle.

[0020] Figure 4 This is an exploded view of some parts of the air fryer according to an embodiment of the present invention.

[0021] Figure 5 This is an exploded view of the motor base and support column of the air fryer according to an embodiment of the present invention.

[0022] Figure 6 yes Figure 5 A magnified view of B in the middle.

[0023] Figure 7 This is a schematic diagram of the liner and air guide of the air fryer according to an embodiment of the present invention.

[0024] Figure label:

[0025] 1. Housing; 11. Outer shell; 111. Heat dissipation vents; 12. Inner liner; 121. Cooking cavity; 13. Air guide shroud; 131. First mating surface; 132. Second mating surface; 133. Positioning protrusion;

[0026] 2. Motor assembly; 21. Drive motor; 22. Motor mount; 221. Slot; 222. Lower opening; 223. Rib; 224. Positioning slot; 225. Heat dissipation channel; 226. Heat insulation cavity; 23. First fan; 24. Support column; 25. Second fan;

[0027] 3. Inner pot;

[0028] 4. Heating element. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] Please refer to the following Figures 1 to 7 This invention describes an air fryer according to an embodiment of the present invention.

[0031] like Figures 1 to 5 As shown, the air fryer of this utility model embodiment includes a housing 1 and a motor assembly 2. The housing 1 includes an outer shell 11, an inner liner 12 and an air guide shroud 13. The motor assembly 2 includes a drive motor 21, a motor base 22, a first fan 23 and a support column 24.

[0032] The inner liner 12 and the air guide shroud 13 are both located inside the outer shell 11. The air guide shroud 13 is located on the upper side of the inner liner 12 and together with the inner liner 12, they form a cooking cavity 121. The first fan 23 is located inside the cooking cavity 121. The motor base 22 is located on the upper side of the air guide shroud 13. The drive motor 21 is located on the motor base 22 and connected to the first fan 23. The support column 24 stops between the motor base 22 and the air guide shroud 13 to form a heat insulation gap between the motor base 22 and the air guide shroud 13.

[0033] According to the embodiment of the present invention, the air fryer has a heat insulation gap between the motor base 22 and the air guide shroud 13, which prevents direct contact between the motor base 22 and the air guide shroud 13. This reduces the heat transferred from the air guide shroud 13 to the motor base 22. Furthermore, the support column 24 can limit the axial movement of the motor base 22 and the air guide shroud 13, preventing them from being too close together or touching during assembly, thus improving the assembly accuracy of the air fryer and providing better heat insulation. Moreover, compared to a solution that uses a heat insulation plate between the motor base 22 and the air guide shroud 13, the air fryer of the embodiment of the present invention can reduce production costs.

[0034] Understandably, the lower end face of the motor base 22 and the upper end face of the air guide shroud 13 are spaced apart in the vertical direction of the housing 1 to form a heat insulation gap. Since the support column 24 stops between the motor base 22 and the air guide shroud 13, it can limit direct contact between the lower end face of the motor base 22 and the upper end face of the air guide shroud 13, avoiding the problem of the heat insulation gap narrowing or disappearing due to assembly deviations or the dimensional deviations of the parts themselves.

[0035] Because a heat insulation gap is provided between the motor base 22 and the air guide shroud 13, the heat transferred from the air guide shroud 13 to the motor base 22 can be reduced, thus reducing the risk of glue melting at the contact surface between the motor base 22 and the air guide shroud 13. Furthermore, it can reduce the heat distortion temperature of the motor base 22 material, saving on the material cost of the motor base 22.

[0036] It should be noted that, as Figure 2 As shown, the air fryer also includes a heating element 4, which is located on the upper side of the cooking cavity 121. For example, the heating element 4 is located inside the air guide shroud 13 and below the first fan 23. The drive motor 21 can drive the first fan 23 to rotate, so as to circulate the heat from the heating element 4 within the cooking cavity 121.

[0037] In one example, the liner 12 and the air guide shroud 13 can be an integral structural component. For example, the air guide shroud 13 and the liner 12 are integrally formed sheet metal parts. In other examples, the liner 12 and the air guide shroud 13 can be manufactured separately and then assembled together. This invention does not specifically limit the connection form of the liner 12 and the air guide shroud 13.

[0038] In some embodiments, as Figure 3 As shown, the heat insulation gap is H, where 0.2mm ≤ H ≤ 1.5mm. For example, the heat insulation gaps are 0.2mm, 0.5mm, 0.8mm, 1mm, and 1.5mm. By setting the heat insulation gap within the above parameter range, the air fryer of this embodiment can, on the one hand, ensure effective heat insulation of the motor base 22, and on the other hand, prevent excessive hot air from escaping through the heat insulation gap, thus ensuring good ventilation of the air fryer.

[0039] It is understandable that, such as Figure 3 and Figure 4 As shown, the motor base 22 is a cover structure, and the heat insulation gap is the gap between the outer peripheral side of the motor base 22 and the air guide shroud 13. The space inside the motor base 22 and the upper end face of the air guide shroud 13 form a heat insulation cavity 226. The heat insulation cavity 226 is connected to the heat dissipation hole 111 on the housing 1 through the heat dissipation channel 225 inside the motor base 22, and the heat insulation gap is connected to the heat insulation cavity 226.

[0040] The inventors of this application discovered through experimental research that when the heat insulation gap H is too small (less than 0.2 mm), the motor base 22 cannot be effectively insulated, meaning that a significant amount of heat is still transferred from the air guide shroud 13 to the motor base 22, resulting in a higher risk of the motor base 22 melting and sticking. When the heat insulation gap H is too large (greater than 1.5 mm), hot air that should have flowed out through the heat dissipation channel 225 will flow out in large quantities through the heat insulation gap, weakening the air fryer's exhaust effect and affecting the overall temperature rise test.

[0041] Optionally, either the motor base 22 or the air guide shroud 13 can be detachably connected to the support column 24. That is, the support column 24 is detachably connected to the motor base 22, and the air guide shroud 13 is detachably connected to the support column 24. This allows the motor base 22, the air guide shroud 13, and the support column 24 to be manufactured separately, so that the support column 24 can be made of a high-temperature resistant material, facilitating processing and material selection.

[0042] In one example, the upper end of the support column 24 is snapped into the motor base 22, and the lower end of the support column 24 abuts against the air guide shroud 13. When assembling the motor base 22 and the air guide shroud 13, the support column 24 can be snapped into the motor base 22 first to secure it and prevent it from falling off during subsequent assembly. Therefore, the air fryer of this embodiment, by setting the support column 24 to the above structure, facilitates the installation of the support column 24 and simplifies the assembly process.

[0043] In addition, since the lower end of the support column 24 abuts against the air guide shroud 13, there is no need to set a corresponding mating structure on the air guide shroud 13, so as to simplify the structure of the air guide shroud 13 and facilitate the processing and manufacturing of the air guide shroud 13.

[0044] Specifically, if Figure 5 and Figure 6 As shown, the motor base 22 has a slot 221 with a lower opening 222. The inner circumferential wall of the slot 221 is provided with a rib 223. The support column 24 is inserted into the slot 221 through the lower opening 222 and engages with the rib 223. By connecting the support column 24 and the motor base 22 in the above manner, the air fryer of this embodiment can reduce the risk of the support column 24 becoming detached from the motor base 22, improve the reliability of the connection, and the engagement method between the motor base 22 and the support column 24 is simple and easy to manufacture.

[0045] For example, there are multiple ribs 223, which are arranged at intervals along the circumference of the slot 221 to improve the firmness of the fit between the support column 24 and the slot 221.

[0046] Optionally, such as Figure 4As shown, there are multiple support columns 24, which are arranged circumferentially around the motor base 22 at intervals, and the support columns 24 are arranged near the edge of the motor base 22. By setting multiple support columns 24, the air fryer of this embodiment can improve the stability of the motor base 22 installation and help ensure the consistency of the dimensions of each area of ​​the heat insulation gap.

[0047] For example, there are four support columns 24, arranged in an array at the four corners of the motor base 22. Of course, there can also be three or five support columns 24, and this utility model does not limit the number of support columns 24.

[0048] Optionally, such as Figures 5 to 7 As shown, one of the motor base 22 and the air guide shroud 13 is provided with a positioning groove 224, and the other of the motor base 22 and the air guide shroud 13 is provided with a positioning protrusion 133, which fits into the positioning groove 224. Through the cooperation of the positioning groove 224 and the positioning protrusion 133, the air fryer of this embodiment can be pre-positioned during the installation of the motor base 22, thereby improving the installation efficiency and accuracy of the motor base 22.

[0049] For example, the positioning groove 224 is provided on the motor base 22, and the positioning protrusion 133 is provided on the air guide cover 13. As another example, the positioning groove 224 is provided on the air guide cover 13, and the positioning protrusion 133 is provided on the motor base 22.

[0050] In this example of the present invention, the positioning groove 224 is located at the outer edge of the motor base 22, and the positioning protrusion 133 is located at the outer edge of the air guide shroud 13. In other words, the positioning groove 224 is arranged near the edge of the motor base 22, and the positioning protrusion 133 is arranged near the edge of the upper surface of the air guide shroud 13. When assembling the motor base 22 onto the air guide shroud 13, the positioning groove 224 can be aligned with the positioning protrusion 133 on the air guide shroud 13 to place the motor base 22 in the accurate position.

[0051] Specifically, if Figures 5 to 7 As shown, the air fryer also includes fasteners (not shown), which pass through the positioning protrusion 133 and the positioning groove 224. It is understood that by inserting fasteners through the positioning protrusion 133 and the positioning groove 224, the motor base 22 can be fixed, and the positioning protrusion 133 and the positioning groove 224 can be used for positioning, thus facilitating the fixed installation of the air guide shroud 13 and the motor base 22, and resulting in a simple structure.

[0052] There are multiple positioning slots 224, which are arranged at intervals along the circumference of the motor base 22. There are also multiple positioning protrusions 133, which correspond one-to-one with the multiple positioning slots 224. The air fryer of this embodiment of the present invention has the positioning protrusions 133 and positioning slots 224 designed as described above, which can improve the stability of the motor base 22 fixed to the air guide cover 13, and make the installation stable and not easy to shake.

[0053] In some embodiments, as Figure 4 and Figure 7 As shown, the upper surface of the air guide shroud 13 includes a first mating surface 131 and a second mating surface 132. The second mating surface 132 surrounds the outer periphery of the first mating surface 131. A heat insulation gap is defined between the first mating surface 131 and the motor base 22. A heat insulation cavity 226 is defined between the second mating surface 132 and the motor base 22. The motor assembly 2 also includes a second fan 25. The second fan 25 is disposed in the heat insulation cavity 226 and connected to the drive motor 21.

[0054] It is understandable that, such as Figure 2 As shown, the drive motor 21 can simultaneously drive the first fan 23 and the second fan 25 to rotate. The first fan 23 can drive the hot airflow to circulate within the cooking chamber 121, while the second fan 25 blows air towards the motor base 22 to dissipate heat from both the motor base 22 and the drive motor 21. The heat dissipation channel 225 within the motor base 22 communicates with the heat dissipation holes 111 on the housing 1, allowing the hot airflow within the insulation chamber 226 to be discharged through the heat dissipation channel 225 and the heat dissipation holes 111. Therefore, the air fryer of this embodiment, by providing an insulation chamber 226 and arranging a second fan 25 within it, can cool the motor base 22 and the drive motor 21, thereby extending their service life.

[0055] In this example of the invention, the air fryer also includes an inner pot 3, which can be placed into and removed from the cooking chamber 121. For example, the inner pot 3 is removably installed in the cooking chamber 121 in the front-to-back direction to allow the user to take it out.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. An air fryer, characterized in that, include: The housing (1) includes an outer shell (11), an inner liner (12), and an air guide (13). The inner liner (12) and the air guide (13) are both located inside the outer shell (11). The air guide (13) is located on the upper side of the inner liner (12) and together with the inner liner (12) form a cooking cavity (121). The motor assembly (2) includes a drive motor (21), a motor base (22), a first fan (23), and a support column (24). The first fan (23) is located inside the cooking cavity (121). The motor base (22) is located on the upper side of the air guide shroud (13). The drive motor (21) is located on the motor base (22) and connected to the first fan (23). The support column (24) stops between the motor base (22) and the air guide shroud (13) to form a heat insulation gap between the motor base (22) and the air guide shroud (13).

2. The air fryer according to claim 1, characterized in that, The heat insulation gap is H, where 0.2mm≤H≤1.5mm.

3. The air fryer according to claim 1, characterized in that, Either the motor mount (22) or the air guide shroud (13) is detachably connected to the support column (24).

4. The air fryer according to claim 3, characterized in that, The upper end of the support column (24) is engaged with the motor base (22), and the lower end of the support column (24) abuts against the air guide cover (13).

5. The air fryer according to claim 3, characterized in that, The motor base (22) has a slot (221) with a lower opening (222). The inner peripheral wall of the slot (221) is provided with a rib (223). The support column (24) is inserted into the slot (221) through the lower opening (222) and engages with the rib (223).

6. The air fryer according to claim 1, characterized in that, There are multiple support columns (24), which are arranged circumferentially around the motor base (22) and are located near the edge of the motor base (22).

7. The air fryer according to claim 1, characterized in that, One of the motor base (22) and the air guide shroud (13) is provided with a positioning groove (224), and the other of the motor base (22) and the air guide shroud (13) is provided with a positioning protrusion (133), which fits into the positioning groove (224).

8. The air fryer according to claim 7, characterized in that, The air fryer also includes fasteners that pass through the positioning protrusion (133) and the positioning groove (224).

9. The air fryer according to claim 7, characterized in that, The positioning groove (224) is provided on the motor base (22) and arranged near the edge of the motor base (22), and the positioning protrusion (133) is provided on the air guide cover (13); And / or, there are multiple positioning slots (224), and the multiple positioning slots (224) are arranged at intervals along the circumference of the motor base (22), and there are multiple positioning protrusions (133) that correspond one-to-one with the multiple positioning slots (224).

10. The air fryer according to any one of claims 1-9, characterized in that, The upper surface of the air guide shroud (13) includes a first mating surface (131) and a second mating surface (132). The second mating surface (132) surrounds the outer periphery of the first mating surface (131). The first mating surface (131) and the motor base (22) define the heat insulation gap. The second mating surface (132) and the motor base (22) define a heat insulation cavity (226). The motor assembly (2) also includes a second fan (25). The second fan (25) is disposed in the heat insulation cavity (226) and connected to the drive motor (21).

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