Air fryer safe to use

Abstract

The utility model discloses a safe-to-use air fryer which comprises a machine shell, a reflecting cover is arranged in the machine shell, the reflecting cover divides the space in the machine shell into an upper mounting cavity and a lower cooking cavity, a motor is arranged in the mounting cavity, a hot air fan and a heating piece are arranged in the cooking cavity, and the heating piece is arranged in the motor. The lower end of an output shaft of the motor penetrates through a shaft hole in the reflecting cover and extends into the cooking cavity so as to drive the hot air fan to rotate, and an annular surrounding piece extending towards the cooking cavity is arranged at the position of the shaft hole. In order to solve the technical problems that steam or water vapor in a cooking cavity is likely to overflow into a mounting cavity through a shaft hole to affect the use safety and the service life of an electric device, and meanwhile cold airflow in the mounting cavity enters the cooking cavity through the shaft hole to affect the heating effect in the cooking cavity, a fence piece is arranged at the shaft hole; steam or water vapor can be prevented from overflowing into the mounting cavity from the cooking cavity or the overflowing amount can be reduced, electric parts in the mounting cavity can be protected, and meanwhile the heating effect of the cooking cavity can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of kitchen appliances, in particular to an air fryer which is safe to use. Background Art

[0002] As a new type of cooking device, air fryer uses rapidly circulating hot air to cook food, simulating the effect of traditional frying without using a lot of oil, thus providing a low-fat, healthy food option.

[0003] In the existing air fryer design, it is necessary to use a motor drive shaft to drive the fan circulation to achieve head cooling and hot air circulation. Usually, an axial hole is provided on the reflector cover, and the lower end of the motor drive shaft extends into the cooking cavity through the axial hole. Due to the existence of the axial hole, the head and the cooking cavity form a partially connected space. When the connection is formed, the following problems will arise: First, the steam or water vapor generated in the cooking cavity during the cooking process can easily enter the interior of the head, and the head is equipped with electrical components such as motors and circuit boards. The motor is easily rusted when exposed to a humid environment for a long time, which is not conducive to its service life and efficiency; at the same time, high-temperature steam or water vapor may damage the circuit board, causing a short circuit, increasing the failure rate, and affecting the reliability and safety of the circuit board. Secondly, when the cold air in the head flows back to the cooking cavity, it will cause the temperature in the cooking cavity to drop, or produce drastic temperature fluctuations, which will not only affect the cooking efficiency and prolong the cooking time, but may also cause uneven cooking of food, affecting the quality and taste of the food.

[0004] Therefore, how to solve the problem of air flow exchange at the shaft hole to enhance the safety of electrical components in the machine head while ensuring the heating effect in the cooking cavity is a direction that needs to be improved in the field of air fryers. Utility Model Content

[0005] In order to solve the technical problems in the prior art that the airflow exchange at the shaft hole of the reflector cover leads to a decrease in the safety and life of electrical components in the machine head, and a decrease in the heating efficiency in the cooking cavity, the utility model provides a safe air fryer, which aims to optimize the structural form at the shaft hole to provide a certain airflow blockage to prevent the airflow on both sides from exchanging through the shaft hole.

[0006] The utility model discloses an air fryer which is safe to use, comprising a casing, wherein a reflective cover is arranged in the casing, wherein the reflective cover divides the space in the casing into an upper installation cavity and a lower cooking cavity, wherein a motor is arranged in the installation cavity, wherein a heat fan and a heating element are arranged in the cooking cavity, wherein the lower end of the output shaft of the motor passes through an axial hole on the reflective cover and extends into the cooking cavity to drive the heat fan to rotate, wherein an annular enclosure extending toward the cooking cavity is arranged at the axial hole.

[0007] The safe-to-use air fryer of the utility model also has the following additional technical features:

[0008] The enclosure is formed by folding the reflector downward along the edge of the shaft hole.

[0009] The enclosure member has an enclosure wall, and the enclosure wall is arranged obliquely toward the center of the shaft hole.

[0010] The angle formed by the enclosure wall and the horizontal plane ranges from 30° to 60°.

[0011] The enclosure member has an enclosure wall, and the enclosure wall is connected to the reflector cover through a rounded transition.

[0012] The height of the enclosure is h, where h≥1 mm.

[0013] The distance from the hot fan to the reflector is H, and 1 / 2H≤h<H.

[0014] The output shaft is sleeved with a clamping spring and a fastening nut arranged below the clamping spring, and the heat fan is fastened between the clamping spring and the fastening nut.

[0015] A heat dissipation fan driven by a motor is arranged in the installation cavity. The motor has an outer rotor. The heat dissipation fan is arranged on the outer peripheral wall of the outer rotor.

[0016] A heat dissipation fan driven by a motor is arranged in the installation cavity, and the blades of the heat dissipation fan extend upward.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0018] 1. The utility model is a safe air fryer. In order to solve the technical problems that the steam or water vapor in the cooking cavity is easy to overflow into the installation cavity through the shaft hole on the reflective cover, affecting the safety and life of the electrical components, and the cold air flow in the installation cavity enters the cooking cavity through the shaft hole and affects the heating effect in the cooking cavity, the present application sets a blocking member at the shaft hole to prevent the steam or water vapor from overflowing from the cooking cavity into the installation cavity or reduce the overflow amount, which is beneficial to protecting the electrical components in the installation cavity to ensure their performance and life, and at the same time ensure the heating effect in the cooking cavity.

[0019] 2. Based on the existing structure, in order to reduce the cost of transformation and save the installation of parts, as a preferred embodiment, the enclosure is formed by folding the reflector downward along the edge of the shaft hole. That is, the enclosure can be integrally formed with the reflector, which is easy to process and can also omit the assembly steps between the reflector and the enclosure.

[0020] 3. In order to enhance the blocking effect of the airflow in the cooking cavity, as a preferred embodiment, the enclosure has an enclosure wall, and the enclosure wall is inclined toward the center of the shaft hole. Specifically, the channel contraction formed by the enclosure can reduce the steam and water vapor in the cooking cavity from entering the installation cavity through the channel, and the enclosure wall is inclined to form an air guide side wall, which is convenient for guiding the upward airflow to flow to the lower surface of the reflector after turning along the air guide side wall, and then the airflow flows back to the cooking cavity along the reflector, which can reduce the probability of the airflow entering the installation cavity through the shaft hole, ensure the heating efficiency in the cooking cavity, and avoid adverse effects on the electrical components in the installation cavity.

[0021] Furthermore, in one embodiment, the angle formed by the enclosure wall and the horizontal plane is in the range of 30° to 60°. By limiting the inclination angle of the enclosure wall, it can be avoided that when the angle is too small, the narrowing diameter formed by the bottom end of the enclosure wall is too small, which may interfere with the rotation of the motor output shaft, which is not conducive to the stable transmission of the output shaft; at the same time, it can be avoided that when the angle is too large, part of the airflow in the cooking cavity easily bypasses the enclosure wall and continues to overflow from the shaft hole, resulting in failure to block the airflow, that is, by limiting the appropriate angle range, the probability of the airflow and the enclosure wall interacting can be increased, and the effect of blocking the airflow overflow can be achieved.

[0022] 4. In order to improve the guiding effect of the airflow along the enclosure wall and prevent the airflow from easily hitting the reflective cover after turning through the enclosure wall and increasing noise, as a preferred embodiment, the enclosure member has an enclosure wall, and the enclosure wall and the reflective cover are connected through a rounded transition. In this way, the airflow in the cooking cavity can flow more smoothly along the bottom of the reflective cover when passing through the rounded position along the enclosure wall, and at the same time, it can prevent the airflow from hitting the reflective cover and increasing noise.

[0023] 5. The enclosure has a certain height. In order to effectively guide the airflow to turn and flow back at the shaft hole and prevent the airflow from overflowing the cooking cavity, the height of the enclosure should not be too small. As a preferred embodiment, the height of the enclosure is h, h≥1mm.

[0024] Furthermore, the setting of the enclosure should not interfere with the operation of the heat fan below. In one embodiment, the distance from the heat fan to the reflector is H, and 1 / 2H≤h<H.

[0025] 6. In conventional structures, the lower end of the output shaft of the motor is provided with a sleeve to install the heat fan. In order to facilitate the lower end of the output shaft provided with the sleeve to pass through the shaft hole and extend into the cooking cavity, the shaft hole is required to have a larger opening. The increase in the shaft hole will inevitably increase the probability of airflow overflowing from the cooking cavity during the operation of the machine, causing high-temperature steam and water vapor to damage the electrical components in the installation cavity. In order to solve this problem, as a preferred embodiment, a retaining ring and a fastening nut provided below the retaining ring are sleeved on the output shaft, and the heat fan is fastened between the retaining ring and the fastening nut. That is, by omitting the sleeve and using the retaining ring and the fastening nut to limit the heat fan from both ends, not only can the heat fan be firmly installed, but it is also conducive to reducing the size of the shaft hole to further reduce the probability of airflow overflow.

[0026] 7. In order to enhance the heat dissipation of the motor, as a preferred embodiment, a heat dissipation fan driven by a motor is also provided in the installation cavity, the motor has an outer rotor, and the heat dissipation fan is arranged on the outer peripheral wall of the outer rotor. The use of an outer rotor motor and the use of the outer rotor to install the heat dissipation fan is conducive to reducing the overall height of the motor assembly and promoting the compactness of the structure, and the heat dissipation fan is installed more firmly. Compared with the traditional method of fixing the motor shaft, this solution has higher structural reliability, can reduce the shaking of the heat dissipation fan during operation, and reduce noise.

[0027] 8. In order to prevent the airflow in the installation cavity from passing downward through the shaft hole into the cooking cavity and affecting the heating efficiency of the cooking cavity, as a preferred embodiment, a heat dissipation fan driven by a motor is provided in the installation cavity, and the blades of the heat dissipation fan extend upward. By extending the blades of the heat dissipation fan upward, it is prevented that the heat dissipation fan blows the airflow in the installation cavity downward through the shaft hole into the cooking cavity and affects the temperature of the cooking cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0029] Figure 1 A cross-sectional schematic diagram of an air fryer according to an embodiment of the present application.

[0030] Figure 2 for Figure 1 Schematic diagram of the air flow path in the cooking cavity when the air fryer is working.

[0031] Figure 3 for Figure 1 Schematic diagram of the air flow path in the installation cavity when the air fryer is working.

[0032] Figure 4This is a schematic diagram of the structure of an enclosure under one implementation mode of the present application.

[0033] Figure 5 for Figure 1 A magnified schematic diagram of the structure in the middle.

[0034] Reference numerals:

[0035] 10. Casing; 11. Reflector; 12. Installation cavity; 13. Cooking cavity; 14. Motor; 15. Hot fan; 16. Heating element; 141. Output shaft; 111. Shaft hole; 17. Enclosure; 18. Cooling fan; 171. Enclosure wall; 172. Channel; 173. Fillet; 19. Circlip; 20. Fastening nut; 181. Fan blade; 21. Fryer assembly. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

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

[0039] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are only connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" 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 the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] like Figures 1 to 5 As shown, the present application provides an air fryer that is safe to use, including a casing 10, wherein a reflective cover 11 is provided in the casing 10, wherein the reflective cover 11 divides the space in the casing 10 into an upper mounting cavity 12 and a lower cooking cavity 13, wherein a motor 14 is provided in the mounting cavity 12, wherein a hot fan 15 and a heating element 16 are provided in the cooking cavity 13, wherein the lower end of an output shaft 141 of the motor 14 passes through an axial hole 111 on the reflective cover 11 and extends into the cooking cavity 13 to drive the hot fan 15 to rotate, wherein an annular enclosure 17 extending toward the cooking cavity 13 is provided at the axial hole 111.

[0044] The utility model provides an air fryer that is safe to use, in order to solve the technical problems that the steam or water vapor in the cooking cavity 13 is easy to overflow into the mounting cavity 12 through the axial hole 111 on the reflective cover 11, affecting the safety of use and the life of the electrical components, and at the same time the cold air flow in the mounting cavity 12 enters the cooking cavity 13 through the axial hole 111 and affects the heating effect in the cooking cavity 13, the present application sets a blocking member 17 at the axial hole 111, which can prevent the steam or water vapor from overflowing from the cooking cavity 13 into the mounting cavity 12 or can reduce the overflow amount, which is beneficial to protecting the electrical components in the mounting cavity 12 to ensure their performance and life, and at the same time can ensure the heating effect in the cooking cavity 13.

[0045] Since the motor 14 needs to drive the two fans (the cooling fan 18 and the hot fan 15) on both sides of the reflective cover 11 to work at the same time, a part of the output shaft 141 of the motor 14 is located in the installation cavity 12, and the other part is located in the cooking cavity 13 (the air fryer includes a frying pot assembly 21 arranged under the reflective cover 11, and the reflective cover 11 and the frying pot assembly 21 enclose the cooking cavity 13). The shaft hole 111 provides conditions for the output shaft 141 of the motor 14 to pass through two spaces, and also makes the installation cavity 12 and the cooking cavity 13 partially connected. In order to reduce the influence of the airflow exchange on the two sides of the shaft hole 111 on the respective chambers, the shape of the shaft hole 111 can be optimized, and a baffle 17 can be added. For the inner side of the baffle 17, the inner side of the baffle 17 is connected with the shaft hole 111 to form a channel 172. The formation of the channel 172 is conducive to improving the flow path of the airflow. In addition, when the airflow flows into the channel 172, the airflow is easy to contact the inner wall of the channel 172, and some steam condensation will occur. When the steam forms condensed water, the condensed water is easy to fall back into the cooking cavity 13 under the action of gravity, which is also conducive to reducing steam overflow. For the outer side of the baffle 17, its wall extending toward the cooking cavity 13 will guide the airflow in the cooking cavity 13, and can guide the airflow to turn and then flow back into the cooking cavity 13, which is also conducive to reducing steam overflow.

[0046] Furthermore, for the mounting cavity 12, when the enclosure 17 has the effect of reducing the size of the channel 172 at the axial hole 111, it can also prevent the airflow in the mounting cavity 12 from flowing into the cooking cavity 13, so that the influence of the airflow in the mounting cavity 12 on the temperature fluctuation in the cooking cavity 13 can be eliminated, thereby ensuring the heating effect of the cooking cavity 13.

[0047] The enclosure 17 can be a separate accessory or formed on the reflector 11, which has little impact on the structure of the existing reflector 11 and is convenient for controlling costs. On the basis of the existing structure, in order to reduce the cost of modification and save the installation of components, as a preferred embodiment, the enclosure 17 is formed by folding the reflector 11 downward along the edge of the shaft hole 111. That is, the enclosure 17 can be integrally formed with the reflector 11, which is convenient for processing and can also omit the assembly steps between the reflector 11 and the enclosure 17.

[0048] It is understandable that in other embodiments, the enclosure 17 is an independent structure, which can be connected to the reflector 11 by welding or other methods.

[0049] In order to enhance the blocking effect of the airflow in the cooking cavity 13, as a preferred embodiment, the enclosure 17 has an enclosure wall 171, and the enclosure wall 171 is inclined toward the center of the shaft hole 111. Specifically, the channel 172 formed by the enclosure 17 is contracted, which can reduce the steam and water vapor in the cooking cavity 13 from entering the installation cavity 12 through the channel 172, and the enclosure wall 171 is inclined to form an air guide side wall, which is convenient for guiding the upward airflow to flow to the lower surface of the reflector 11 after turning along the air guide side wall, and then the airflow flows back to the cooking cavity 13 along the reflector 11, which can reduce the probability of the airflow entering the installation cavity 12 through the shaft hole 111, ensure the heating efficiency in the cooking cavity 13, and avoid adverse effects on the electrical components in the installation cavity 12.

[0050] like Figure 4 As shown, the channel 172 formed by the shaft hole 111 and the surrounding wall 171 is set to shrink toward the cooking cavity 13. Since the bottom opening of the channel 172 is smaller than the size of the shaft hole 111, it is helpful to prevent the airflow in the cooking cavity 13 from overflowing into the installation cavity 12. At the same time, it is also helpful to inhibit the airflow in the installation cavity 12 from flowing into the cooking cavity 13. Figure 2 As shown, during the upward flow of the airflow in the cooking cavity 13, the airflow can flow to the outside of the shaft hole 111 below the reflector 11 under the guidance of the enclosure wall 171, and then flow back to the cooking cavity 13 along the reflector 11, thereby solving the problem of airflow overflow in the cooking cavity 13. Figure 3 As shown, during the downward flow of the airflow driven by the cooling fan 18, the airflow is blocked by the enclosure wall 171 and turns to flow upward, thereby solving the problem of the airflow in the installation cavity 12 flowing into the cooking cavity 13.

[0051] Furthermore, in one embodiment, the angle formed between the enclosure wall 171 and the horizontal plane is in the range of 30° to 60°. Figure 4 As shown, the enclosing wall 171 forms an angle α with the horizontal plane. By limiting the inclination angle α of the enclosing wall 171, it can be avoided that when the angle α is too small, the diameter of the narrowed opening formed by the bottom end of the enclosing wall 171 is too small, which may cause interference with the rotation of the output shaft 141 of the motor 14, and is not conducive to the stable transmission of the output shaft 141; at the same time, it can be avoided that when the angle α is too large, a part of the airflow in the cooking cavity 13 is easy to bypass the enclosing wall 171 and continue to overflow from the shaft hole 111, resulting in failure of blocking the airflow, that is, by limiting the appropriate angle range, the probability of the airflow and the enclosing wall 171 interacting can be increased, thereby achieving the effect of blocking the airflow from overflowing.

[0052] In order to improve the guiding effect of the airflow along the enclosure wall 171 and prevent the airflow from easily hitting the reflector 11 after turning through the enclosure wall 171 and increasing noise, as a preferred embodiment, the enclosure member 17 has an enclosure wall 171, and the enclosure wall 171 and the reflector 11 are transitionally connected through a rounded corner 173. In this way, the airflow in the cooking cavity 13 can flow more smoothly along the bottom of the reflector 11 when passing through the rounded corner 173 along the enclosure wall 171, and at the same time, it can prevent the airflow from hitting the reflector 11 and increasing noise.

[0053] It should be noted that, in other embodiments, the enclosure wall 171 may also extend vertically or be inclined in a direction away from the center of the shaft hole 111. This is because the airflow under the action of the hot fan 15 includes multiple directions, and the airflow near the enclosure 17 includes airflow that forms a certain flow angle with the enclosure wall 171. This part of the airflow will be blocked by the enclosure wall 171 and cannot continue to overflow from the shaft hole 111, thereby achieving the effect of preventing the airflow from overflowing the cooking cavity 13. Figures 1 to 4 The solution of the enclosing wall 171 in the cooking chamber 13 can prevent the airflow from overflowing the cooking chamber 13 with a greater probability, that is, it can reduce the amount of steam overflow to a greater extent.

[0054] The enclosure 17 of the present application has a certain height. In order to effectively guide the airflow to turn and flow back at the shaft hole 111 and prevent the airflow from overflowing the cooking cavity 13, the height of the enclosure 17 should not be too small. As a preferred embodiment, the height of the enclosure 17 is h, h≥1mm. The height h refers to the vertical height of the enclosure 17.

[0055] Furthermore, the setting of the enclosure 17 should not interfere with the operation of the lower heat fan 15. In one embodiment, the distance between the heat fan 15 and the reflector 11 is H, and 1 / 2H≤h<H. By setting the distance H, while taking into account the reflection effect of the reflector 11 on heat energy, when 1 / 2H≤h, the gap between the bottom end of the enclosure 17 and the heat fan 15 is small, which sets an obstacle for the airflow to flow to the gap and then overflow the shaft hole 111 through the gap, thereby further reducing the probability of airflow overflow.

[0056] In the conventional structure, the lower end of the output shaft 141 of the motor 14 is provided with a shaft sleeve to install the heat fan 15. In order to facilitate the lower end of the output shaft 141 provided with the shaft sleeve to pass through the shaft hole 111 and extend into the cooking cavity 13, the shaft hole 111 is required to have a larger opening. The increase in the shaft hole 111 will inevitably increase the probability of the airflow overflowing from the cooking cavity 13 during the operation of the machine, resulting in damage to the electrical components in the installation cavity 12 caused by high-temperature steam and water vapor. In order to solve this problem, as a preferred embodiment, as shown in FIG. Figure 5As shown, the output shaft 141 is sleeved with a retaining spring 19 and a fastening nut 20 disposed below the retaining spring 19, and the hot fan 15 is fastened between the retaining spring 19 and the fastening nut 20. That is, by omitting the shaft sleeve and using the retaining spring 19 and the fastening nut 20 to limit the hot fan 15 from both ends, not only can the hot fan 15 be firmly installed, but it is also helpful to reduce the size of the shaft hole 111, so as to further reduce the probability of airflow overflow.

[0057] In order to enhance the heat dissipation of the motor 14, as a preferred embodiment, a cooling fan 18 driven by the motor 14 is also provided in the installation cavity 12. The motor 14 has an outer rotor, and the cooling fan 18 is arranged on the outer peripheral wall of the outer rotor. The use of an outer rotor motor 14 and the use of the outer rotor to install the cooling fan 18 is conducive to reducing the overall height of the motor 14 assembly and promoting the compactness of the structure, and the cooling fan 18 is installed more firmly. Compared with the traditional method of fixing the shaft of the motor 14, the structural reliability of this solution is higher, which can reduce the shaking of the cooling fan 18 during operation and reduce noise. The cooling fan 18 and the motor 14 can be connected as a whole by, for example, welding or heat nesting, or the cooling fan 18 can be directly formed by the outer rotor of the motor 14, which can further thin the motor 14 assembly and help reduce the axial size of the air fryer.

[0058] In order to prevent the airflow in the installation cavity 12 from entering the cooking cavity 13 downward through the shaft hole 111 and affecting the heating efficiency of the cooking cavity 13, as a preferred embodiment, a cooling fan 18 driven by a motor 14 is provided in the installation cavity 12, and the fan blades 181 of the cooling fan 18 extend upward. Figure 3 As shown, by extending the blades 181 of the heat dissipation fan 18 upward, it is prevented that the heat dissipation fan 18 blows the airflow in the installation cavity 12 downward through the shaft hole 111 into the cooking cavity 13 and affects the temperature of the cooking cavity 13 .

[0059] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution 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 above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A safe air fryer, comprising a housing, a reflector provided in the housing, the reflector dividing the space in the housing into an upper mounting cavity and a lower cooking cavity, a motor provided in the mounting cavity, a heat fan and a heating element provided in the cooking cavity, the lower end of the output shaft of the motor passing through the shaft hole on the reflector and extending into the cooking cavity to drive the heat fan to rotate, characterized in that: An annular enclosure extending toward the cooking cavity is provided at the axial hole.

2. The safe air fryer according to claim 1, characterized in that: The enclosure is formed by folding the reflector downward along the edge of the shaft hole.

3. The safe air fryer according to claim 1, characterized in that: The enclosure member has an enclosure wall, and the enclosure wall is arranged obliquely toward the center of the shaft hole.

4. The safe air fryer according to claim 3, characterized in that: The angle formed by the enclosure wall and the horizontal plane ranges from 30° to 60°.

5. The safe air fryer according to claim 1, characterized in that: The enclosure member has an enclosure wall, and the enclosure wall is connected to the reflector cover through a rounded transition.

6. The safe air fryer according to claim 1, characterized in that: The height of the enclosure is h, where h≥1 mm.

7. The safe air fryer according to claim 6, characterized in that: The distance from the hot fan to the reflector is H, and 1 / 2H≤h<H.

8. The safe air fryer according to claim 1, characterized in that: The output shaft is sleeved with a clamping spring and a fastening nut arranged below the clamping spring, and the heat fan is fastened between the clamping spring and the fastening nut.

9. The safe air fryer according to claim 1, characterized in that: A heat dissipation fan driven by a motor is arranged in the installation cavity. The motor has an outer rotor. The heat dissipation fan is arranged on the outer peripheral wall of the outer rotor.

10. The safe air fryer according to claim 1, characterized in that: A heat dissipation fan driven by a motor is arranged in the installation cavity, and the blades of the heat dissipation fan extend upward.

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