Air fryer

Abstract

The air fryer comprises a machine shell with an opening in the top and a top cover for sealing the opening, a reflecting cover is arranged in the machine shell, the reflecting cover divides the space in the machine shell into an upper installation cavity and a lower cooking cavity, a motor and a motor support for fixing the motor are arranged in the installation cavity, and the motor support is arranged on the upper portion of the machine shell. A circuit board assembly is arranged above the motor support in the mounting cavity, the circuit board assembly is fixed below the top cover, the motor support is provided with a supporting column extending upwards, and the top end of the supporting column abuts against the bottom face of the circuit board assembly. On the basis that the circuit board assembly is fixed to the top cover, a support is additionally arranged below the circuit board assembly, stable operation hand feeling can be provided, the balance and stability of the circuit board assembly can be enhanced, and the problem that operation of a user fails can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of kitchen appliances, and particularly to an air fryer. Background Art

[0002] In the design of air fryers, the user interface and display screen integrated on the top cover are crucial for providing intuitive operation and feedback. However, there are still some problems in the existing air fryers during use. For example, the existing Chinese patent CN213721526U discloses an air fryer, which includes a main body and a cover plate assembly. The cover plate assembly includes a cover plate and a circuit board assembly. Among them, the circuit board assembly is connected to the inner side of the cover plate, and the cover plate covers the top of the main body. When the user operates the buttons on the cover plate to make the air fryer work, since the cover plate is only snap-fitted to the main body through the periphery and there is a lack of certain support below the circuit board assembly, most of the middle area of the entire cover plate assembly is in a suspended state. Inevitably, the user will feel a void when operating the buttons, and this kind of feel greatly reduces the user experience.

[0003] In addition, the circuit board assembly is only fixed on the inner side of the cover plate, and it is easy to occur that the installation is not firm and the circuit board assembly tilts. When the circuit board assembly tilts, the distance distribution between the circuit board and the cover plate will be uneven, and the induction failure problem will occur at some pressing positions. In this way, it will affect the normal operation and use of the user, and also reduce the user experience. Summary of the Utility Model

[0004] In order to solve the technical problem that in the prior art, due to the suspended state of the position where the circuit board assembly is located and it is not suitable for bearing force, resulting in poor pressing feel for the user, the utility model provides an air fryer. On the basis that the circuit board assembly is fixed to the top cover, a support is added below the circuit board assembly, which can not only provide a stable operation feel, but also enhance the balance and stability of the circuit board assembly, and can avoid the problem of user operation failure.

[0005] The utility model discloses an air fryer, which includes a housing with an opening at the top and a top cover closing the opening. A reflector is arranged inside the housing. The reflector divides the space inside the housing into an upper installation cavity and a lower cooking cavity. An electric motor and a motor bracket for fixing the electric motor are arranged in the installation cavity. A circuit board assembly is arranged above the motor bracket in the installation cavity. The circuit board assembly is fixed below the top cover. The motor bracket is provided with a support column extending upward, and the top end of the support column abuts against the bottom surface of the circuit board assembly.

[0006] The air fryer of the utility model further has the following additional technical features:

[0007] The circuit board assembly includes a touchpad bracket and a touch circuit board. The touch circuit board is disposed in a closed cavity formed by enclosing the touchpad bracket and the top cover. The bottom of the touchpad bracket includes a bottom plate and a convex portion protruding downward relative to the bottom plate. The support column is supported below the bottom plate.

[0008] A ventilation opening of the installation cavity is provided between the top cover and the upper end of the housing. The support column is disposed on a side of the motor bracket away from the ventilation opening.

[0009] The motor is hoisted below the motor bracket. The support column extends upward from the upper surface of the motor bracket.

[0010] A cooling fan is disposed in the installation cavity. The motor is an external rotor brushless motor. The cooling fan is mounted on the external rotor of the motor.

[0011] An air inlet is provided in the middle of the motor bracket. The support column is disposed on the outer peripheral edge of the motor bracket to avoid the air inlet.

[0012] A plurality of the support columns are provided. The plurality of support columns are distributed on both sides of the central axis of the circuit board assembly.

[0013] A plurality of the support columns are provided. The plurality of support columns are evenly arranged along the circumferential direction of the motor bracket. The top cover is provided with a plurality of buttons. The plurality of buttons are arranged in a circular pattern. The circle where the plurality of buttons are located is concentric with the circle where the plurality of support columns are located.

[0014] The support column includes a plate-shaped support plate and a reinforcing plate forming an angle with the support plate.

[0015] A heat insulation sleeve is sleeved on the upper end of the support column.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] 1. For the air fryer of the utility model, in order to solve the technical problems that the user feels poor when operating the buttons on the top cover and the circuit board assembly is not firmly installed, on the premise of fixing the circuit board assembly, by adding supports below the circuit board assembly, not only can a stable operation feel be provided, but also the balance and stability of the circuit board assembly can be enhanced, and the problem of user operation failure can be avoided.

[0018] Adopting the structure on the motor bracket to support the circuit board assembly has less modification to the existing structure, simple configuration, low cost, is beneficial to making full use of the space in the installation cavity, and promotes the compact arrangement of the structure.

[0019] 2. To prevent the touch control circuit board from being vulnerable to the erosion of water vapor during the processing when it is exposed for setting, and at the same time improve its heat dissipation effect. As a preferred implementation manner, the circuit board assembly includes a touch panel bracket and a touch control circuit board. The touch control circuit board is disposed in a closed cavity formed by enclosing the touch panel bracket and the top cover. The top end of the support column abuts against the bottom surface of the touch panel bracket. By enclosing and setting the touch control circuit board, it is possible to prevent water vapor from invading and damaging the components on the touch control circuit board or causing a short circuit, which may lead to potential safety hazards. At the same time, it can play a heat insulation role to avoid the heat in the installation cavity being transferred to the touch control circuit board, resulting in too high a temperature rise, which affects its service performance and life.

[0020] To further improve the stability of the support column in supporting the touch panel bracket. As a preferred embodiment, the bottom of the touch panel bracket includes a bottom plate and a convex portion protruding downward relative to the bottom plate. The support column is supported below the bottom plate. Since the bottom plate has a relatively large area, it is convenient to be evenly supported by a plurality of support columns, which is beneficial to ensuring the balance and stability of the touch panel bracket.

[0021] 3. When the machine is working, the operation of the motor and other electrical components will cause the temperature in the installation cavity to rise. To meet the heat dissipation requirements of the installation cavity and at the same time avoid the heat air gathering near the support column during the heat dissipation process, which may lead to a temperature rise of the support column, and further lead to a too high temperature rise of the circuit board assembly due to the heat transfer from the support column to the circuit board assembly. As a preferred implementation manner, a ventilation opening of the installation cavity is provided between the top cover and the upper end of the machine shell. The support column is disposed on a side of the motor bracket away from the ventilation opening. That is, on the premise that the ventilation opening meets the heat dissipation of the installation cavity, by setting the support column away from the ventilation opening, the problem of heat air transferring to the circuit board assembly during the heat dissipation process can be effectively solved.

[0022] 4. To simplify the structure of the motor bracket and reduce its size. As a preferred implementation manner, the motor is hoisted below the motor bracket, and the support column extends upward from the upper surface of the motor bracket. In this way, compared with the conventional structure where the motor base is installed on the motor bracket, this solution can reduce the distance between the motor bracket and the circuit board assembly, and can reduce the length of the support column. On the one hand, it is beneficial to cost reduction. On the other hand, it can avoid the support column being easily knocked and broken during transportation when it is relatively long, that is, it is beneficial to ensure the integrity of the motor bracket structure and extend its service life.

[0023] Further, in order to simplify the structure of the motor, as a preferred embodiment, a cooling fan is provided in the installation cavity, the motor is an outer-rotor brushless motor, and the cooling fan is installed on the outer rotor of the motor; the use of an outer-rotor brushless motor features a simple structure and small size, which is conducive to reducing the space occupied by the installation cavity, facilitating the miniaturization of the air fryer, and extending the service life while ensuring the working efficiency; the cooling fan is installed on the outer rotor, with simple assembly and improved transmission efficiency and stability.

[0024] 5. To ensure smooth heat dissipation of the motor and thus the heat dissipation efficiency, and to avoid the influence of the support columns on the air intake of the motor position, as a preferred implementation manner, an air inlet is provided in the middle of the motor bracket, and the support columns are arranged at the outer peripheral edge of the motor bracket to avoid the air inlet; in this way, when the motor is working, cold air is sucked in from the air inlet and blown towards the motor, and the air intake volume can be guaranteed without obstruction of the air inlet, thus ensuring the air intake efficiency.

[0025] 6. To improve the balance of the support of the circuit board assembly, as a preferred implementation manner, a plurality of support columns are provided, and the plurality of support columns are distributed on both sides of the central axis of the circuit board assembly; this can prevent the circuit board assembly from tilting due to uneven force when only one side of the circuit board assembly is supported after the top cover is frequently pressed, which may affect subsequent normal sensing.

[0026] 7. To enable users to obtain a more stable operating feel during operation and no longer feel a void, as a preferred implementation manner, a plurality of support columns are provided, the plurality of support columns are evenly arranged along the circumference of the motor bracket, the top cover is provided with a plurality of buttons, the plurality of buttons are arranged in a circular pattern, and the circle where the plurality of buttons are located is concentric with the circle where the plurality of support columns are located; this is not only conducive to arranging more buttons on the circumferential path and improving the space utilization rate, but also can improve the operating feel of the buttons by means of the support below. Even if pressed frequently, the operation stability can be ensured, improving the use reliability.

[0027] 8. On the premise of ensuring the effective support of the support columns, to strengthen the structural strength of the support columns and improve the stability and reliability of the support, as a preferred implementation manner, the support column includes a plate-shaped support plate and a reinforcing plate that forms an angle with the support plate; in this way, the support plate has a small volume and can avoid interfering with other structures on the motor bracket. At the same time, under the action of the reinforcing plate, the overall strength of the support column increases, the probability of its fracture can be reduced, and the service life can be extended.

[0028] 9. To reduce the heat transfer of the motor through the motor bracket - support column to the circuit board assembly, keep the circuit board assembly at a good working temperature, and avoid the influence of excessive temperature rise on its use and lifespan. As a preferred embodiment, a heat insulation sleeve is sleeved on the upper end of the support column; the heat insulation sleeve can block the heat transfer of the motor to the circuit board assembly, improving the reliability of the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments and descriptions thereof are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0030] Figure 1 It is a schematic diagram of the composition structure of the casing, its internal structure, and the top cover under an embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view of the internal structure of the installation cavity under an embodiment of the present application.

[0032] Figure 3 It is a schematic diagram of the cooperation between the motor bracket and the top cover under an embodiment of the present application.

[0033] Figure 4 For Figure 1 an enlarged schematic diagram of the structure at position A in

[0034] Reference numerals:

[0035] 10, casing; 11, top cover; 12, reflector; 13, installation cavity; 14, motor; 15, motor bracket; 16, circuit board assembly; 17, support column; 161, touch panel bracket; 162, touch circuit board; 163, components; 164, bottom plate; 165, convex part; 18, cooling fan; 141, rotating shaft; 151, air inlet; 19, ventilation opening; 191, ventilation groove; 171, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To more clearly illustrate the overall concept of the present utility model, the following will be further described in detail by way of examples in combination with the accompanying drawings of the specification.

[0037] In order to more clearly understand the above-mentioned objects, features, and advantages of the present application, the following will further describe the present application in detail in combination with the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0038] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0039] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through a transition structure between the two connected main bodies, and only a connection structure is used to connect them to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0043] As shown Figures 1 to 4 in the figure, the present application provides an air fryer, which includes a housing 10 with an opening at the top and a top cover 11 closing the opening. A reflector 12 is provided inside the housing 10. The reflector 12 divides the space inside the housing 10 into an upper installation cavity 13 and a lower cooking cavity. An electric motor 14 and a motor bracket 15 for fixing the electric motor 14 are provided in the installation cavity 13. A circuit board assembly 16 is provided above the motor bracket 15 in the installation cavity 13. The circuit board assembly 16 is fixed under the top cover 11. The motor bracket 15 is provided with a support column 17 extending upward, and the top end of the support column 17 abuts against the bottom surface of the circuit board assembly 16.

[0044] For the air fryer of the present application, in order to solve the technical problems that the user feels poor when operating the buttons on the top cover 11 and the circuit board assembly 16 is not firmly installed. On the premise that the circuit board assembly 16 is fixed, by adding support below the circuit board assembly 16, not only can a stable operation feel be provided, but also the balance and stability of the circuit board assembly 16 can be enhanced, and the problem of user operation failure can be avoided.

[0045] Using the structure on the motor bracket 15 to support the circuit board assembly 16 has less modification to the existing structure, simple configuration and low cost, which is beneficial to making full use of the space in the installation cavity 13 and promoting the compact arrangement of the structure.

[0046] As Figure 1 and Figure 2 shown, by arranging the motor assembly below the circuit board assembly 16 and using the structure of the motor bracket 15 to support the upper circuit board assembly 16, the dimensions of the installation cavity 13 itself in the axial and radial directions are not affected, so the overall dimensions of the air fryer are not affected. At the same time, an additional support structure can be omitted, which is beneficial to the simplification of the configuration and the improvement of the utilization of the space in the installation cavity 13. Specifically, since the top cover 11 is only stressed with the housing 10 around the edge, most of the middle area of the top cover 11 lacks support below. And there are buttons on the top cover 11 for users to operate. Without support, the user will feel a void or dare not press hard when pressing the buttons, resulting in poor user experience. Usually, the buttons are set within the corresponding range of the circuit board assembly 16. To solve the above problems, the operation feel of the user can be improved by setting support below the circuit board assembly 16. In addition, there is usually a suitable distance between the circuit board and the top cover 11 to ensure that the circuit board senses and provides a signal after being pressed by the user. When the circuit board assembly 16 is supported, the situation that the circuit board tilts due to shaking can be prevented, and the stable distance range between the circuit board and the top cover 11 can be ensured, so the user operation failure can be avoided (for example, when the circuit board tilts, the distance between some positions of the circuit board and the top cover 11 becomes larger, and the circuit board is prone to sensing failure).

[0047] Among them, the circuit board assembly 16 is first fixed on the top cover 11, and the circuit board assembly 16 can be fixed by means such as snap connection and screw fixation; then when the top cover 11 is installed on the casing 10, the support column 17 supports the circuit board assembly 16. The support column 17 can be integrally formed on the motor bracket 15, for example, which is convenient for processing and can reduce the probability of its breakage. The shape of the support column 17 is not limited. For example, a cylindrical or square column structure can be adopted, or a plate-like structure can be adopted. The number and distribution of the support columns 17 are set according to actual needs, and this application does not make requirements.

[0048] In order to prevent the touch control circuit board 162 from being vulnerable to the erosion of water vapor during the processing when it is exposed, and at the same time improve its heat dissipation effect, as a preferred embodiment, the circuit board assembly 16 includes a touch panel bracket 161 and a touch control circuit board 162. The touch control circuit board 162 is disposed in a closed cavity formed by enclosing the touch panel bracket 161 and the top cover 11, and the top end of the support column 17 abuts against the bottom surface of the touch panel bracket 161; by enclosing and disposing the touch control circuit board 162, water vapor can be prevented from invading and damaging the components 163 on the touch control circuit board 162 or causing a short circuit, leading to potential safety hazards. At the same time, it can play a heat insulation role and avoid the heat in the installation cavity 13 from being transferred to the touch control circuit board 162, resulting in too high a temperature rise and affecting its service performance and life.

[0049] As Figure 2 shown, the touch panel bracket 161 includes a bracket bottom wall and bracket side walls extending upward. The bracket side walls abut against the top cover 11 to enclose a closed cavity. The touch control circuit board 162 can be disposed closely against the inner side of the bracket bottom wall or can be kept at a certain gap from the bracket bottom wall.

[0050] Furthermore, a plurality of components 163 are provided on the touch control circuit board 162, and the components 163 can be provided on at least one of the upper surface and the lower surface of the touch control circuit board 162. When components 163 are provided on both the upper and lower surfaces of the touch control circuit board 162, since the distance between the touch control circuit board 162 and the top cover 11 is relatively small (to ensure the sensing effect), some components 163 with larger sizes can be provided on the lower surface of the touch control circuit board 162. In order to avoid these components 163, the bottom of the touch panel bracket 161 can be set in a non-uniform height form.

[0051] In order to improve the stability of the support of the support column 17 for the touch panel bracket 161, as a preferred embodiment, the bottom of the touch panel bracket 161 includes a bottom plate 164 and a convex portion 165 protruding downward relative to the bottom plate 164, and the support column 17 supports below the bottom plate 164. As Figure 2As shown, the convex part 165 can be used to accommodate the downwardly convex component 163. Since the bottom plate 164 has a relatively large area and is convenient for being uniformly supported by a plurality of support columns 17, it is beneficial to ensure the balance and stability of the touchpad bracket 161.

[0052] Alternatively, in some other embodiments, a plurality of support columns 17 with different lengths may be provided to correspondingly support the lower sides of the bottom plate 164 and the convex part 165.

[0053] When the machine is working, the operation of the motor 14 and other electrical components will cause the temperature in the installation cavity 13 to rise. To meet the heat dissipation requirements of the installation cavity 13 and at the same time avoid the hot air gathering near the support columns 17 during the heat dissipation process, resulting in the temperature rise of the support columns 17, and further leading to the temperature rise of the circuit board assembly 16 due to the heat transfer from the support columns 17 to the circuit board assembly 16. As a preferred embodiment, a ventilation opening 19 of the installation cavity 13 is provided between the top cover 11 and the upper end of the machine shell 10, and the support columns 17 are arranged on the side of the motor bracket 15 away from the ventilation opening 19; that is, on the premise that the ventilation opening 19 meets the heat dissipation of the installation cavity 13, by arranging the support columns 17 away from the ventilation opening 19, the problem of heat transfer of hot air to the circuit board assembly 16 during the heat dissipation process can be effectively solved. As Figure 1 and Figure 4 shown, a plurality of ventilation grooves 191 communicating with the outside are provided at the top edge of the machine shell 10. When the motor is working, the heat dissipation fan 18 can drive the hot air to be discharged from the ventilation grooves 191.

[0054] To simplify the structure of the motor bracket 15 and reduce its size, as a preferred embodiment, the motor 14 is hoisted below the motor bracket 15, and the support columns 17 extend upward from the upper surface of the motor bracket 15; thus, compared with the conventional structure in which the motor 14 is mounted on the motor bracket 15, this solution can reduce the distance between the motor bracket 15 and the circuit board assembly 16, and can reduce the length of the support columns 17. On the one hand, it is beneficial to cost reduction, and on the other hand, it can avoid the support columns 17 being easily knocked and broken during transportation, that is, it is beneficial to ensure the integrity of the structure of the motor bracket 15 and extend its service life.

[0055] As Figure 2 shown, the overall axial volume formed by the motor 14 and the motor bracket 15 is relatively small, which is beneficial to reducing the occupation of the space of the installation cavity 13 and is beneficial to reducing the axial dimension of the air fryer. The motor bracket 15 can adopt either a plate-shaped bracket structure or a cover-shaped bracket structure, which is selected according to actual needs. For example, as Figure 3 shown, when the motor bracket 15 adopts a cover-shaped bracket structure, the motor bracket 15 can surround the motor 14, which is beneficial to forming a heat dissipation air duct inside to optimize the heat dissipation of the motor 14.

[0056] Further, to simplify the structure of the motor 14, as a preferred embodiment, a cooling fan 18 is disposed in the installation cavity 13. The motor 14 is an outer-rotor brushless motor 14, and the cooling fan 18 is mounted on the outer rotor of the motor 14. The use of an outer-rotor brushless motor 14 has a simple structure and a small volume, which is conducive to reducing the space occupied by the installation cavity 13, facilitating the miniaturization of the air fryer, and ensuring the working efficiency while extending the service life. The cooling fan 18 is mounted on the outer rotor, with simple assembly and can improve the transmission efficiency and stability.

[0057] The cooling fan 18 and the motor 14 can be connected as a whole by means such as welding or thermal nesting, or the cooling fan 18 can be directly formed by the outer rotor of the motor 14, which can further thin the motor assembly and is conducive to reducing the axial dimension of the air fryer. The lower end of the rotating shaft 141 of the motor 14 passes through the reflection cover 12 and extends into the cooking cavity. A hot air fan is connected to the lower end of the rotating shaft 141, and the motor 14 can drive the hot air fan and the cooling fan 18 to work simultaneously.

[0058] When the motor 14 is operating, to meet the heat dissipation requirements of the motor 14, cold air is blown into the motor 14 from above the motor bracket 15, and then the hot air is radially ejected under the drive of the rotation of the cooling fan 18. To ensure smooth heat dissipation of the motor 14 and ensure the heat dissipation efficiency, and to avoid the influence of the setting of the support column 17 on the air intake position of the motor 14, as a preferred implementation manner, an air inlet 151 is provided in the middle of the motor bracket 15, and the support column 17 is arranged at the outer peripheral edge of the motor bracket 15 to avoid the air inlet 151. In this way, when the motor 14 is operating, cold air is sucked in from the air inlet 151 and blown towards the motor 14. When the air inlet 151 is not blocked, the air intake volume can be guaranteed, thereby ensuring the air intake efficiency.

[0059] Preferably, a plurality of support columns 17 are provided, and the arrangement of the plurality of support columns 17 can be set based on the support effect on the circuit board assembly 16 and the correspondence with the buttons. For example, to improve the balance of the circuit board assembly 16 being supported, as a preferred implementation manner, a plurality of support columns 17 are provided, and the plurality of support columns 17 are distributed on both sides of the central axis of the circuit board assembly 16, which can prevent the circuit board assembly 16 from being inclined due to uneven force when only one side of the circuit board assembly 16 is supported after the top cover 11 is frequently pressed, affecting subsequent normal sensing. When the circuit board assembly 16 is supported on both the left and right sides of the central axis, when the user presses the left or right side of the top cover 11 corresponding to the circuit board assembly 16, due to the overall balanced support of the circuit board assembly 16, a stable operating feel can be ensured, and at the same time, it is beneficial for the circuit board assembly 16 to maintain balance and stability. The support columns 17 are provided with the same number on the left and right sides of the central axis, for example, to enhance the balance of support.

[0060] The above-mentioned multiple support columns 17 can be arranged in an array, for example. For example, the support columns 17 are provided with two columns and are distributed on both sides of the central axis. Of course, the multiple support columns 17 can also adopt other arrangement methods.

[0061] As a preferred embodiment, a plurality of the support columns 17 are provided. The plurality of support columns 17 are evenly arranged along the circumferential direction of the motor bracket 15. The top cover 11 is provided with a plurality of buttons. The plurality of buttons are arranged in a circular arrangement. The circle where the plurality of buttons are located is concentric with the circle where the plurality of support columns 17 are located. In this embodiment, the plurality of support columns 17 are arranged in a circular arrangement, and the plurality of buttons are distributed in the supported area. Not only can the operating feel of the buttons be improved by means of the supporting action below, and the operating stability can be ensured even when pressed frequently, but also the number of buttons can be increased under the premise of saving space by arranging the buttons along a circular path, which is beneficial to enriching the operating functions of the air fryer.

[0062] On the premise of ensuring the supporting effect, in order to improve the cooperation relationship between the support column 17 and other components on the motor bracket 15 and optimize the overall performance of the motor bracket 15, as a preferred embodiment, the top of the motor bracket 15 is provided with a plurality of heat dissipation holes. The support column 17 is a plate-shaped member. The width of the support column 17 extends along the circumferential direction of the motor bracket 15 to avoid the heat dissipation holes. Using a plate-shaped support column 17 can ensure that a certain area of the support surface is formed at its top to ensure the supporting effect on the circuit board assembly 16. At the same time, the support column 17 avoiding the heat dissipation holes is beneficial to the heat dissipation of the related structure below the motor bracket 15.

[0063] As Figure 1 shown, the support column 17 has a certain width d and thickness, and its width is greater than the thickness. The central area of the motor bracket 15 is provided with an air inlet 151, and a plurality of heat dissipation holes are provided around the air inlet 151. If the width of the support column 17 extends along the radial direction of the motor bracket 15, it will inevitably block the heat dissipation holes or occupy the setting space of the heat dissipation holes. That is, by making the width of the support column 17 extend along the circumferential direction of the motor bracket 15, the heat dissipation holes can be avoided from being blocked. The lower surface of the motor bracket 15 is provided with a motor drive board, for example. By providing the heat dissipation holes, cold air can pass through the heat dissipation holes to dissipate heat from the motor drive board, which is beneficial to improving the heat dissipation effect of the motor drive board.

[0064] Furthermore, in order to strengthen the structural strength of the support column 17, as a preferred embodiment, the support column 17 includes a plate-shaped support plate 171 and a reinforcing plate that forms an angle with the support plate 171. As Figure 1As shown, the support plate 171 has a relatively small volume, which can avoid interfering with other structures on the motor bracket 15. At the same time, under the action of the reinforcing plate, the overall strength of the support column 17 is increased, the probability of its fracture can be reduced, and the service life can be extended. Specifically, the reinforcing plate can be arranged, for example, on the side of the support plate 171 facing away from the center of the motor bracket to avoid occupying the space of the motor bracket 15 near the center. The upper end of the reinforcing plate is connected to the support plate 171, and the lower end is connected to the motor bracket 15. The reinforcing plate is arranged perpendicular to the support plate 171, for example, or an acute angle is formed between the upper end of the reinforcing plate and the support plate 171.

[0065] It can be understood that the above-mentioned reinforcing plate is in a plate shape, and the structure for improving the strength of the support plate 171 is not limited to this. For example, reinforcing ribs can also be used.

[0066] In order to reduce the heat of the motor 14 from being transferred to the circuit board assembly 16 through the motor bracket 15 - support column 17, keep the circuit board assembly 16 at a good working temperature, and avoid the influence of excessive temperature rise on its use and service life. As a preferred embodiment, a heat insulation sleeve is sleeved on the upper end of the support column 17; the heat insulation sleeve can block the heat of the motor 14 from being transferred to the circuit board assembly 16, and improve the reliability of the support column 17 in use. The heat insulation sleeve preferably also has flexibility to achieve flexible support, so that the vibration generated by the motor 14 can be avoided from being transmitted upward, and structural resonance can be avoided, which is beneficial to reducing the working noise.

[0067] The technical solution protected by the present utility model is not limited to the above embodiments. It should be noted that the combination of the technical solution of any one embodiment with the technical solutions of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail with general descriptions and specific embodiments above, based on the present utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all belong to the scope required to be protected by the present utility model.

Claims

1. An air fryer, comprising a casing with an opening at the top and a top cover closing the opening, wherein a reflector is arranged in the casing, and the reflector divides the space in the casing into an upper mounting cavity and a lower cooking cavity, wherein a motor and a motor bracket for fixing the motor are arranged in the mounting cavity, characterized in that: A circuit board assembly is arranged above the motor bracket in the installation cavity, and the circuit board assembly is fixed below the top cover. The motor bracket is provided with a support column extending upward, and the top end of the support column abuts against the bottom surface of the circuit board assembly.

2. An air fryer according to claim 1, characterized in that: The circuit board assembly includes a touchpad bracket and a touch circuit board. The touch circuit board is arranged in a closed cavity formed by the touchpad bracket and the top cover. The bottom of the touchpad bracket includes a bottom plate and a convex portion protruding downward relative to the bottom plate. The support column is supported below the bottom plate.

3. An air fryer according to claim 1, characterized in that: A vent of the mounting cavity is provided between the top cover and the upper end of the housing, and the support column is provided on a side of the motor bracket away from the vent.

4. The air fryer according to claim 1, characterized in that: The motor is hoisted below the motor bracket, and the support column is extended upward from the upper surface of the motor bracket.

5. An air fryer according to claim 4, characterized in that: A cooling fan is arranged in the installation cavity, the motor is an outer rotor brushless motor, and the cooling fan is installed on the outer rotor of the motor.

6. The air fryer according to claim 1, characterized in that: An air inlet is arranged in the middle of the motor bracket, and the support column is arranged at the outer peripheral edge of the motor bracket to avoid the air inlet.

7. The air fryer according to claim 1, characterized in that: There are multiple support columns, and the multiple support columns are distributed on both sides of the central axis of the circuit board assembly.

8. The air fryer according to claim 1, characterized in that: There are multiple support columns, and the multiple support columns are evenly arranged along the circumference of the motor bracket. The top cover is provided with multiple buttons, and the multiple buttons are arranged along the circumference. The circle where the multiple buttons are located is concentrically arranged with the circle where the multiple support columns are located.

9. The air fryer according to claim 1, characterized in that: The support column includes a plate-shaped support plate and a reinforcing plate which forms an angle with the support plate.

10. The air fryer according to claim 1, characterized in that: The upper end of the support column is sleeved with a heat insulation sleeve.

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