Air fryer capable of improving heating effect

Abstract

The air fryer comprises a cooking cavity and a hot air assembly arranged on the upper portion of the inner side of the cooking cavity, the hot air assembly comprises an upper heating piece and a hot air fan, a lower heating assembly is arranged at the bottom of the inner side of the cooking cavity, the lower heating assembly comprises a reflecting plate and a lower heating piece arranged above the reflecting plate, and the lower heating piece is arranged above the reflecting plate. The reflecting plate is coated with a coating, the reflecting plate comprises a main plate and a boss arranged on the main plate in a protruding mode, a protruding rib is arranged on the top face of the boss, and the lower heating piece is supported on the protruding rib so that the lower heating piece can be separated from the boss and the main plate. The small-size convex ribs are adopted to support the lower heating piece, so that the lower heating piece can be isolated from the main board and the boss, the contact area of the convex ribs and the lower heating piece can be reduced, the influence of high temperature of the lower heating piece on the coating of the reflecting plate can be effectively reduced, the falling probability of the coating of the reflecting plate can be reduced, and the service life of the reflecting plate is prolonged. And the service performance and the service life of the reflecting plate are optimized.

Description

Technical Field

[0001] The utility model relates to the field of kitchen appliances, in particular to an air fryer for improving heating effect. Background Art

[0002] An air fryer is a kitchen appliance that uses a heating component to form a hot air circulation to bake food. By setting the corresponding heating temperature and time, after the machine finishes working, the food baking is completed.

[0003] To improve the baking effect of the bottom of the food, a heating element can also be provided at the bottom of the cooking cavity of the air fryer. By heating the bottom of the food through the heating element, the uniform heating effect in the cooking cavity can be improved, which is beneficial to shortening the heating time and improving the taste of the food. Further, according to the principle of the reflector above the cooking cavity, the applicant thought that a reflector plate could also be provided at the bottom of the cooking cavity to ensure that the heat of the bottom heating element is transmitted upward to the food. The reflector plate is provided with a coating, and a galvanized layer is also provided on the inner side of the coating to ensure the reflection efficiency. During the use of the air fryer, a high-temperature and high-humidity environment will be formed in the cooking cavity, which is likely to cause the coating to fall off. After the coating falls off, the galvanized layer will be exposed, and the falling off of the galvanized layer will reduce the reflection efficiency of the reflector plate, resulting in uneven heat energy distribution. Moreover, the falling off of the coating and the galvanized layer may enter the food, which will affect the food hygiene and the health of users.

[0004] Further, if the heating tube is directly arranged on the reflector plate, the heating tube is relatively close to the reflector plate, and the heat of the heating tube is extremely easy to be transmitted to the reflector plate. The aggravated high-temperature effect plus the high-humidity environment will increase the probability of the coating and the galvanized layer falling off, so it is urgent to solve.

[0005] The existing Chinese patent CN219742494U discloses an air fryer, which is provided with a heat reflector plate at the bottom of the fryer basket assembly and a lower heating tube arranged on the heat reflector plate. Specifically, the heat reflector plate is provided with a tube groove formed by stamping, and a convex platform formed by stamping and supporting the lower heating tube is arranged in the tube groove. Although the convex platform can support the lower heating tube, the contact area between the convex platform and the lower heating tube is too large, and the lower heating tube is relatively close to the top surface of the heat reflector plate. The high temperature of the lower heating tube is extremely easy to be transmitted to the heat reflector plate through the convex platform. This solution has the problem that the heat reflector plate is easily deformed under the influence of the high temperature of the lower heating tube. Moreover, this solution does not find the influence of the specific use environment of the air fryer on the coating of the reflector plate. Without realizing the above technical problems, it is difficult for the prior art to make improvements in this regard.

[0006] In addition, in other scenarios such as grills, heating tubes are often used on the reflector (such as the solution in patent CN219048134U), and a baking tray is provided above the reflector. This solution is different from the usage scenario of an air fryer. The reflector is not in a high-temperature and high-humidity environment, and there is no problem of the coating on the reflector peeling off. On this basis, it is difficult to give an inspiration that can be applied to an air fryer to solve the problem of the coating peeling off on the reflector. Summary of the Utility Model

[0007] In order to solve the technical problem that in the prior art, for the heating structure at the bottom of an air fryer, the coating on the reflector is easily peeled off under the influence of a high-temperature and high-humidity environment, the present utility model provides an air fryer that improves the heating effect. A small-sized convex rib is used to support the lower heating element to isolate the lower heating element from the main board, so as to reduce the damage of the high temperature of the lower heating element to the coating on the reflector.

[0008] The present utility model discloses an air fryer that improves the heating effect, which includes a cooking cavity and a hot air assembly provided above the inner side of the cooking cavity. The hot air assembly includes an upper heating element and a hot air fan. A lower heating assembly is provided at the inner bottom of the cooking cavity. The lower heating assembly includes a reflector and a lower heating element provided above the reflector. A coating is covered on the reflector. The reflector includes a main board and a convex platform protruding on the main board. A convex rib is provided on the top surface of the convex platform. The lower heating element is supported on the convex rib so that the lower heating element is isolated from the convex platform and the main board.

[0009] The air fryer that improves the heating effect of the present utility model further has the following additional technical features:

[0010] The lower heating element is a heating tube, and the convex rib extends along the radial direction of the heating tube.

[0011] The length of the convex rib is greater than or equal to the diameter of the heating tube.

[0012] A support surface is provided at the top of the convex rib, and the support surface is convex arc-shaped.

[0013] An installation surface is provided at the top of the convex platform, and the installation surface is a plane. The lower heating element is fixed to the installation surface through a fixing member.

[0014] The convex platform further includes a heat dissipation surface that extends obliquely downward along the installation surface to the main board.

[0015] The fixing member covers the upper part of the lower heating element. The fixing member includes a card slot and two fixing parts provided on both sides of the card slot. The two fixing parts are respectively fixed to the installation surface and are located outside both ends of the convex rib.

[0016] The lower heating element is a heating tube, and the inner top wall of the card slot is in clearance fit with the heating tube, or the inner side wall of the card slot is in clearance fit with the heating tube.

[0017] The length of the rib ranges from 4 to 10 mm; and / or, the width of the rib ranges from 0.5 to 1 mm.

[0018] The height of the rib is not less than 2 mm, and the height of the boss is not less than 4 mm.

[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0020] 1. The air fryer for improving the heating effect of the utility model, on the premise of using the lower heating component to improve the heating effect of the bottom of the food, in order to solve the technical problems that the coating of the reflector is easily peeled off due to the influence of water vapor in the cooking cavity and the high temperature of the lower heating element, resulting in a reduction in the reflection efficiency of the reflector and the coating entering the food, causing food safety problems. In this application, small-sized ribs are convexly provided on the boss, and the ribs are used to support the lower heating element. Not only can the lower heating element be isolated from the main board and the boss, but also the contact area between the ribs and the lower heating element can be reduced, effectively reducing the influence of the high temperature of the lower heating element on the coating of the reflector, and realizing the reduction of the probability of peeling off of the coating of the reflector, thereby optimizing the service performance and life of the reflector.

[0021] 2. When using the ribs to support the lower heating element, in order to prevent unstable support caused by point support and the heating tube from being easily squeezed and deformed, as a preferred embodiment, the lower heating element is a heating tube, and the ribs extend along the radial direction of the heating tube; that is, the ribs extending along the radial direction of the heating tube can realize stable support of the heating tube, and at the same time, it can avoid excessive contact area between the ribs and the heating tube, increasing heat loss and making it difficult to effectively isolate the high temperature of the heating tube from the main board.

[0022] Furthermore, in order to prevent the problem that the heating tube is separated from the rib when it is offset in the horizontal direction, resulting in the failure of the rib support, in a preferred embodiment, the length of the rib is greater than or equal to the diameter of the heating tube, so as to ensure that the heating tube is always on the rib.

[0023] 3. In order to further reduce the heat transfer area and reduce the influence of the temperature of the heating tube on the coating of the reflector, as a preferred embodiment, the top of the rib is provided with a support surface, and the support surface is convex arc-shaped; specifically, only the middle part of the arc-shaped support surface contacts the heating tube, the contact area is small, and a gap can be formed between the edge of the support surface and the heating tube to reduce heat conduction.

[0024] 4. To achieve the fixed installation of the lower heating element, as a preferred embodiment, the top of the boss is provided with an installation surface, and the installation surface is a flat surface. The lower heating element is fixed to the installation surface through a fixing member; the flat installation surface facilitates the assembly of the fixing member on the one hand and provides convenience for the processing of the rib on the other hand.

[0025] In order to further isolate the influence of the high temperature of the lower heating element on the main board, in one embodiment, the boss further includes a heat dissipation surface that extends obliquely downward along the installation surface to the main board; that is, the use of an inclined surface for the heat dissipation surface can extend the heat conduction path. Even if the heat of the lower heating element is transmitted to the boss through the rib, when the heat is conducted along the heat dissipation surface from the boss, it will not reach the main board quickly, and it can still reduce the influence of the high temperature on the coating on the main board.

[0026] 5. To ensure that the lower heating element always remains on the rib and prevent it from detaching from the rib when it undergoes horizontal displacement, in a preferred embodiment, the fixing member covers the upper part of the lower heating element. The fixing member includes a card slot and two fixing parts arranged on both sides of the card slot. The two fixing parts are respectively fixed to the installation surface and are located outside the two ends of the rib; that is, the extending direction of the fixing member is the same as that of the rib, and the two fixing parts are located outside the two ends of the rib. While fixing the lower heating element, it can horizontally limit the lower heating element on the rib, thus preventing the lower heating element from sliding outside the rib.

[0027] Furthermore, since the fixing member is also in contact with the boss, in order to prevent the heat of the lower heating element from being transmitted to the boss through the fixing member and then to the main board, in one embodiment, the lower heating element is a heating tube, and the inner top wall of the card slot is in clearance fit with the heating tube, or the inner side wall of the card slot is in clearance fit with the heating tube; that is, by reducing the contact between the heating tube and the fixing member, the heat transfer efficiency can be reduced, and the rapid arrival of high temperature at the main board can be avoided.

[0028] 6. The rib is a small-sized structure. By defining its size range, while effectively supporting the heating tube, it should be ensured that the contact area with the heating tube is not too large, so as to prevent the high temperature of the heating tube from quickly transferring to the main board. As a preferred embodiment, the length range of the rib is 4 - 10 mm; by setting an appropriate length, the heating tube can be stably supported on the rib, and the heating tube can be prevented from sliding onto the boss.

[0029] The width range of the rib is 0.5 - 1 mm; by setting an appropriate width, stable support can be achieved, and it can be avoided that the top of the rib is too sharp, causing the heating tube to be easily squeezed and deformed.

[0030] 7. To prevent the lower heating element from being too close to the reflector, the isolation height between the lower heating element and the main board can be limited to prevent the high temperature of the lower heating element from damaging the coating of the reflector. As a preferred embodiment, the height of the rib is not less than 2 mm, and the height of the boss is not less than 4 mm. Description of the Drawings

[0031] The drawings described herein are used to provide a further understanding of the present invention and form a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0032] Figure 1 It is a schematic structural diagram of an air fryer housing under an embodiment of the present application.

[0033] Figure 2 It is a schematic structural diagram of a reflector under an embodiment of the present application.

[0034] Figure 3 It is a schematic structural diagram of a lower heating assembly under an embodiment of the present application.

[0035] Figure 4 is Figure 3 an enlarged schematic diagram of the structure at A in

[0036] Figure 5 It is a side view schematic diagram of a lower heating assembly under an embodiment of the present application.

[0037] Reference Numerals:

[0038] 10. Lower heating assembly; 11. Reflector; 12. Heating tube; 111. Main board; 112. Boss; 113. Rib; 131. Housing; 132. Bottom case; 133. Opening; 121. First straight tube; 122. Second straight tube; 123. Second elbow; 124. First elbow; 125. Connection end; 1131. Support surface; 1121. Installation surface; 1122. Heat dissipation surface; 14. Fixing member; 141. Card slot; 142. Fixing part; 143. Through hole; 1123. Screw hole. Detailed Embodiments

[0039] To more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of examples in combination with the drawings of the specification.

[0040] To be able 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.

[0041] 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 scope of protection of the present utility model is not limited by the specific embodiments disclosed below.

[0042] In addition, in the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are 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, and thus should not be construed as limiting the present utility model.

[0043] Furthermore, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, 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 of" means two or more, unless otherwise specifically defined.

[0044] In the present utility model, unless otherwise clearly specified and defined, 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 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 they are only connected through the connection structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and defined, 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 referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. 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 expressions 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.

[0046] As shown Figures 1 to 5 in the figure, the present application provides an air fryer for improving the heating effect, which includes a cooking cavity and a hot air assembly disposed above the inner side of the cooking cavity. The hot air assembly includes an upper heating element and a hot air fan. A lower heating assembly 10 is provided at the inner bottom of the cooking cavity. The lower heating assembly 10 includes a reflector 11 and a lower heating element disposed above the reflector 11. A coating is covered on the reflector 11. The reflector 11 includes a main board 111 and a convex platform 112 protruding from the main board 111. A convex rib 113 is provided on the top surface of the convex platform 112. The lower heating element is supported by the convex rib 113 so that the lower heating element is isolated from the convex platform 112 and the main board 111.

[0047] For the air fryer for improving the heating effect of the present application, on the premise of using the lower heating assembly 10 to improve the heating effect of the bottom of the food, in order to solve the technical problems that the coating on the reflector 11 is easily peeled off due to the water vapor in the cooking cavity and the high temperature of the lower heating element, resulting in a reduction in the reflection efficiency of the reflector 11 and the coating entering the food and causing food safety problems, the present application protrudes a small-sized convex rib 113 on the convex platform 112, and uses the convex rib 113 to support the lower heating element, which can not only isolate the lower heating element from the main board 111 and the convex platform 112, but also reduce the contact area between the convex rib 113 and the lower heating element, effectively reducing the influence of the high temperature of the lower heating element on the coating of the reflector 11, and realizing a reduction in the probability of peeling off of the coating on the reflector 11, thereby optimizing the service performance and life of the reflector 11.

[0048] As shown Figure 1As shown in the figure, the air fryer includes a housing 131 and a bottom shell 132 provided at the bottom of the housing 131. The housing 131 is covered above the bottom shell 132. The housing 131 and the bottom shell 132 enclose a cooking cavity. An opening 133 is provided at the lower end of one side of the housing 131 for the fryer or the fry basket assembly to horizontally enter and exit the cooking cavity. Among them, the upper hot air assembly can blow air downward to heat the food from above, and the lower heating assembly 10 below can blow air upward to heat the food from below, which is beneficial to heating the upper and lower surfaces of the food, can form uniform heating, improve the heating efficiency, and achieve the effect that the food does not need to be turned over. For the lower heating assembly 10, it is inevitable that a part of the heat of the lower heating element reaches the reflector 11 and is radiated to the food through the reflector 11. The problem solved by this application is that the distance between the lower heating element and the reflector 11 is too close, resulting in the rapid temperature rise of the reflector 11 and causing high temperature to damage the coating of the reflector 11. This is not contradictory to the normal heat reception and reflection of the reflector 11, but aims to increase the isolation distance between the lower heating element and the main board 111 of the reflector 11 to achieve the purpose of preventing the high temperature of the lower heating element from damaging the coating of the reflector 11. Further, it can mainly prevent the influence of the high temperature of the lower heating element on the coating on the main board 111. The coating may or may not be provided on the boss 112, and the heat reflection is mainly achieved through the main board 111.

[0049] The solution of this application is beneficial to avoiding the damage of the coating of the reflector 11 caused by the high temperature of the lower heating element, can prevent the coating from peeling off and causing the reflector 11 to rust, so the service life of the reflector 11 can be extended, which is beneficial to the reflector 11 to maintain high-efficiency heat reflection efficiency to reflect the heat of the lower heating element to the food to improve the cooking effect of the food, and at the same time can prevent the coating and rust from entering the food to ensure the food hygiene and safety.

[0050] When using the rib 113 to support the lower heating element, in order to prevent unstable support caused by point support and the heating tube 12 from being easily squeezed and deformed, as a preferred embodiment, the lower heating element is the heating tube 12, and the rib 113 extends along the radial direction of the heating tube 12; that is, the rib 113 extending along the radial direction of the heating tube 12 can achieve stable support of the heating tube 12, and at the same time can avoid excessive contact area between the rib 113 and the heating tube 12, which increases heat loss and makes it difficult to effectively isolate the high temperature of the heating tube 12 from the main board 111. It can be understood that in other embodiments, the rib 113 can also extend along the extension direction of the heating tube 12, and at the same time, the extension dimension of the rib 113 needs to be controlled to avoid excessive contact with the heating tube 12.

[0051] Further, to prevent the problem that the heating tube 12 disengages from the rib 113 when it is horizontally offset, resulting in the failure of the rib 113 to support, in a preferred embodiment, the length of the rib 113 is greater than or equal to the diameter of the heating tube 12, so as to ensure that the heating tube 12 is always on the rib 113. When the length of the rib 113 is greater than the diameter of the heating tube 12, for example, the length of the rib 113 does not exceed twice the diameter of the heating tube 12, so that there is a margin space for the horizontal offset of the heating tube 12 on the rib 113, and at the same time, it can be avoided that the rib 113 is too long, resulting in an increase in the size of the boss 112 and affecting the space of the main board 111.

[0052] The heating tube 12 can be a simple circular heating tube 12, or the heating tube 12 can also adopt a special-shaped structure. For example, in one embodiment, as Figure 3 shown, the heating tube 12 is in a concave shape, and the heating tube 12 includes a first straight tube 121 on the outer circle, a second straight tube 122 and a second bent tube 123 on the inner circle, and a first bent tube 124 connecting the first straight tube 121 and the second straight tube 122. The rib 113 is used to support at least any one of the first straight tube 121, the first bent tube 124, the second straight tube 122 or the second bent tube 123. In this solution, the rib 113 can support different parts of the heating tube 12 to optimize the distribution of the rib 113. For example, the rib 113 is used to support the first straight tube 121 or the second straight tube 122, and the extending direction of the rib 113 is perpendicular to the extending direction of the first straight tube 121 or the second straight tube 122. Or, the rib 113 is used to support the first bent tube 124 or the second bent tube 123, and the extending direction of the rib 113 is perpendicular to the tangent direction of the first bent tube 124 or the second bent tube 123. Whether the heating tube 12 is a straight tube or a bent tube, the rib 113 extends along the width direction of the tube, which can reduce the contact area between the rib 113 and the heating tube 12 and is beneficial to reducing heat transfer.

[0053] To further reduce the heat transfer area and reduce the influence of the temperature of the heating tube 12 on the coating of the reflector 11, as a preferred implementation manner, a support surface 1131 is provided at the top of the rib 113, and the support surface 1131 is in a convex arc shape; as Figure 2 shown, only the middle part of the arc-shaped support surface 1131 contacts the heating tube 12, and the contact area is small. A gap can be formed between the edge of the support surface 1131 (bending downward along the arc) and the heating tube 12 to reduce heat conduction. Of course, in other implementation manners, the support surface 1131 can also be a flat surface.

[0054] To achieve the fixed installation of the lower heating element, as a preferred implementation, the top of the boss 112 is provided with an installation surface 1121, the installation surface 1121 is a flat surface, and the lower heating element is fixed to the installation surface 1121 through a fixing member 14; the flat installation surface 1121 facilitates the assembly of the fixing member 14 on the one hand and provides convenience for the processing of the rib 113 on the other hand. As Figure 3 shown, the heating tube 12 is provided with connection ends 125. The two connection ends 125 are inserted and fixed on the side wall of the reflector 11 and are at a certain height from the main board 111. On the side away from the connection ends 125, the reflector 11 is provided with two symmetric bosses 112 to support the heating area of the heating tube 12, so that the whole heating tube 12 is kept at a certain height. The boss 112 is arranged close to the side wall of the reflector 11, so that the central area of the main board 111 is smooth in a large area to improve the heat reflection effect of this area.

[0055] In order to further isolate the influence of the high temperature of the lower heating element on the main board 111, in one embodiment, the boss 112 further includes a heat dissipation surface 1122 that extends obliquely downward along the installation surface 1121 to the main board 111; as Figure 2 shown, the heat dissipation surface 1122 is an inclined surface, which can extend the heat conduction path. Even if the heat of the lower heating element is transmitted to the boss 112 through the rib 113, the heat will not reach the main board 111 quickly when it is conducted along the heat dissipation surface 1122 of the boss 112, and it can still reduce the influence of the high temperature on the coating on the main board 111. In addition, when condensed water drops from above the cooking cavity, the inclined heat dissipation surface 1122 is also conducive to guiding the condensed water flow to the reflector 11 and then discharging it through the drainage structure, which can avoid water accumulation on the reflector 11 and damage the coating.

[0056] To ensure that the lower heating element always remains on the rib 113 and prevent the lower heating element from detaching from the rib 113 when it undergoes horizontal displacement, in a preferred embodiment, the fixing member 14 covers the upper part of the lower heating element. The fixing member 14 includes a card slot 141 and two fixing parts 142 arranged on both sides of the card slot 141. The two fixing parts 142 are respectively fixed to the installation surface 1121 and are located outside the two ends of the rib 113; as Figure 3 and Figure 4 shown, the extending direction of the fixing member 14 is the same as that of the rib 113. The two fixing parts 142 are located outside the two ends of the rib 113. While fixing the lower heating element, the lower heating element can be horizontally limited on the rib 113, so that the lower heating element can be prevented from sliding to the outside of the rib 113.

[0057] As Figure 4As shown, the fixing member 14 is, for example, a bent fixing piece. Through holes 143 are provided in both fixing portions 142. Correspondingly, two screw holes 1123 are provided on the outer sides of both ends of the rib 113 on the mounting surface 1121. Screws can be used to fasten the fixing portion 142 to the mounting surface 1121.

[0058] Furthermore, since the fixing member 14 is also in contact with the boss 112, in order to prevent the heat of the lower heating member from being transmitted to the boss 112 through the fixing member 14 and then to the main board 111, in one embodiment, the lower heating member is a heating tube 12, and the slot 141 is a U-shaped slot 141. By making the inner wall of the slot 141 fit with the heating tube 12 with a gap, the contact between the heating tube 12 and the fixing member 14 can be reduced, thereby reducing the heat transfer efficiency and preventing high temperature from reaching the main board 111 quickly. Specifically, at least one of the inner top wall of the slot 141 and the inner side wall of the slot 141 fits with the heating tube 12 with a gap.

[0059] The rib 113 is a small-sized structure. By defining its dimension range, while effectively supporting the heating tube 12, the contact area with the heating tube 12 should be ensured not to be too large, so as to prevent the high temperature of the heating tube 12 from being quickly transmitted to the main board 111. As a preferred implementation manner, the range of the length L of the rib 113 is 4 - 10 mm; by setting an appropriate length, the heating tube 12 can be stably supported on the rib 113, and the heating tube 12 can be prevented from sliding onto the boss 112. The length of the rib 113 can also be set with reference to the diameter of the heating tube 12. For example, the length of the rib 113 is at least equal to the diameter of the heating tube 12.

[0060] The range of the width D of the rib 113 is 0.5 - 1 mm; by setting an appropriate width, stable support can be achieved, and the top of the rib 113 can be prevented from being too sharp, which may cause the heating tube 12 to be easily squeezed and deformed. It should be noted that the width of the rib 113 here refers to the effective width of the rib 113 in contact with the heating tube 12. For example, when the supporting surface 1131 at the top of the rib 113 is an arc surface, the width of the rib 113 at this time refers to the width of the arc surface in contact with the heating tube 12; when the supporting surface 1131 is a plane, the width of the rib 113 at this time refers to the width of the plane in contact with the heating tube 12.

[0061] In order to prevent the lower heating member from being too close to the reflector 11, the isolation height between the lower heating member and the main board 111 can be defined to prevent the high temperature of the lower heating member from damaging the coating of the reflector 11. As a preferred implementation manner, the height h1 of the rib 113 is not less than 2 mm, and the height h2 of the boss 112 is not less than 4 mm. As Figure 5As shown, since there is a certain isolation height (i.e., h1 + h2) between the lower heating element and the main board 111, based on this isolation height, when the lower heating element works, the temperature obtained by the main board 111 will not damage the coating, thus ensuring the service performance and life of the reflector 11.

[0062] 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, on the basis of 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 with improved heating effect, comprising a cooking cavity and a hot air component arranged on the upper inner side of the cooking cavity, wherein the hot air component comprises an upper heating element and a hot air fan, characterized in that: A lower heating assembly is provided at the inner bottom of the cooking cavity, and the lower heating assembly includes a reflecting plate and a lower heating element arranged above the reflecting plate, the reflecting plate is covered with a coating, the reflecting plate includes a main board and a boss protruding from the main board, a rib is provided on the top surface of the boss, and the lower heating element is supported on the rib to isolate the lower heating element from the boss and the main board.

2. The air fryer with improved heating effect according to claim 1, characterized in that: The lower heating element is a heating tube, and the convex rib extends along the radial direction of the heating tube.

3. The air fryer with improved heating effect according to claim 2, characterized in that: The length of the convex rib is greater than or equal to the diameter of the heating tube.

4. The air fryer with improved heating effect according to claim 1, characterized in that: A supporting surface is provided on the top of the convex rib, and the supporting surface is in a convex arc shape.

5. The air fryer with improved heating effect according to claim 1, characterized in that: A mounting surface is provided on the top of the boss, and the mounting surface is a plane. The lower heating element is fixed to the mounting surface via a fixing element.

6. The air fryer with improved heating effect according to claim 5, characterized in that: The boss also includes a heat dissipation surface extending obliquely downward along the mounting surface to the mainboard.

7. The air fryer with improved heating effect according to claim 5, characterized in that: The fixing member cover is arranged above the lower heating member, and the fixing member comprises a slot and two fixing parts arranged on both sides of the slot, and the two fixing parts are respectively fixed to the mounting surface and located outside the two ends of the convex rib.

8. The air fryer with improved heating effect according to claim 7, characterized in that: The lower heating element is a heating tube, and the inner top wall of the slot is in gap fit with the heating tube, or the inner side wall of the slot is in gap fit with the heating tube.

9. The air fryer with improved heating effect according to claim 1, characterized in that: The length of the convex rib is in the range of 4-10 mm; and / or the width of the convex rib is in the range of 0.5-1 mm.

10. The air fryer with improved heating effect according to claim 1, characterized in that: The height of the rib is not less than 2 mm, and the height of the boss is not less than 4 mm.

Images