Air fryer

Abstract

The utility model discloses an air fryer which comprises a fryer body and a cover body covering the fryer body, the cover body comprises a machine head and a cover body connected to the lower end of the machine head, the cover body covers the upper portion of the fryer body to form a cooking cavity, a reflecting cover is arranged on the machine head, a connecting cylinder is arranged above the reflecting cover, and the reflecting cover and the connecting cylinder are matched to form a heat dissipation cavity. A cooling fan used for generating cold air is arranged in the cooling cavity, the connecting cylinder comprises an air outlet wall extending in the height direction, the inner side face of the air outlet wall comprises an inclined face inclining outwards from top to bottom, a first air outlet is formed in the lower portion of the inclined face, and in the height direction, the cooling fan and the inclined face at least partially coincide. At least part of cold air in the heat dissipation cavity flows out through the first air outlet and is blown to the cover body. According to the air fryer, the inclined face is arranged on the connecting cylinder, so that cold air generated by the cooling fan can be smoothly exhausted to the outside from the first air outlet, and meanwhile the cold air is obliquely blown downwards to the cover body. In the prior art, when cold air is exhausted from a first air outlet, the cold air is basically exhausted parallel to a cover body and even part of the cold air is exhausted upwards, and therefore the cooling effect on the cover body is poor. The cold air can be directly blown to the cover body due to the guiding effect of the inclined face, and the cooling effect of the cold air on the cover body can be improved.

Description

Technical Field

[0001] This application relates to the field of small household appliances, and particularly to an air fryer. Background Art

[0002] In the prior art, as in Chinese Utility Model Patent CN216393859U, a driving motor is provided on the machine head. A first fan blade (heat dissipation fan) and a second fan blade (referred to as a heating fan in this application) are arranged on the output shaft of the driving motor from top to bottom. An exhaust air ring (connecting cylinder) is arranged on the outer periphery of the first fan blade. The first fan blade is used to generate cold air, the second fan blade cooperates with a heating tube to form hot air, and the cold air generated by the first fan blade is discharged from the exhaust air ring to the outside of the air fryer.

[0003] The lid and the pot body of the air fryer can be hinged. The lid can be reversed relative to the pot body to open or close the cooking cavity; of course, the lid can also be directly placed on the pot body, or the lid can be placed on the pot body by means of coupling. The pot body encloses to form a cooking cavity, and food can be placed inside the cooking cavity. A hot air assembly is arranged inside the air fryer, and the hot air assembly includes a heating tube and a heating fan. The heating fan disperses the heat generated by the heating tube into the cooking cavity, so as to heat the food placed in the cooking cavity.

[0004] Because during the process of heating food by the hot air assembly, the heat generated by the hot air assembly not only heats the food in the cooking cavity, but also the generated heat rises and contacts the lid body, and the temperature of the lid body will increase. When the lid body is made of glass material, the temperature of the lid body will rise rapidly after absorbing heat. When the user needs to observe the cooking situation of the food inside the cooking cavity through the lid body, or needs to open the lid to take out the food in the cooking cavity, the user is likely to touch the lid body. Due to the high temperature of the lid body, it is easy to scald the user, which has certain potential safety hazards. Summary of the Utility Model

[0005] This application discloses an air fryer, which is used to solve the technical problem that during the process of cooking food, the heat generated in the cooking cavity will cause the temperature of the lid body to increase. In the prior art, the air fryer itself does not have a device for cooling the temperature of the lid body and can only rely on external objects for cooling. At the same time, although a heat dissipation fan is provided on the lid, only a small part or no cold air blown by the heat dissipation fan blows towards the lid body, so the temperature of the lid body only drops slightly or does not drop, resulting in a relatively high temperature of the lid body and scalding the user.

[0006] The cover is connected with a cover body at the lower end of the cover body, the cover body is arranged on the upper part of the cooking cavity, and a reflector cover is arranged on the cover body at the lower end of the cover body, and a connecting tube is arranged on the side of the reflector cover facing away from the cooking cavity, and the connecting tube cooperates with the reflecting tube to form a heat dissipation cavity, and the connecting tube comprises a tube top wall and an air outlet wall extending downward from the tube top wall, a heat dissipation fan for generating cold air is arranged in the heat dissipation cavity, and a first air outlet is also arranged on the air outlet wall, the inner side surface of the air outlet wall comprises an inclined surface inclined outwardly, the first air outlet is arranged below the inclined surface, and in the height direction, the heat dissipation fan and the inclined surface at least partially overlap, and the inclined surface guides the cold air to flow out from the first air outlet and then flow in the direction of the cover body.

[0007] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0008] Furthermore, in order to enable more cold air to contact the inclined surface and thus change its flow path, more cold air is blown toward the cover body, thereby enhancing the cooling effect of the cold air on the cover body.

[0009] Optionally, the lower end of the cooling fan is higher than the upper end of the first air outlet.

[0010] Furthermore, in order to enable most of the cold air generated by the heat dissipation fan to change its flow direction and then blow toward the cover body.

[0011] Optionally, the lower end of the heat dissipation fan is not lower than the lower end of the inclined surface, and the upper end of the heat dissipation fan is not higher than the upper end of the inclined surface.

[0012] Furthermore, in order to enable the cold air blown out from the first air outlet to be better gathered together.

[0013] Optionally, the inner side surface includes a first side surface and a second side surface connected in sequence from top to bottom, a corner is formed between the first side surface and the second side surface, the inclined surface is arranged on the first side surface, the lower end of the cooling fan is located above the corner, the angle is greater than 90° and less than 180°, and the first air outlet is at least partially located on the second side surface.

[0014] Furthermore, in order to allow more area of the cover body to be blown by cold air at the same time, the entire cover body can be cooled at the same time.

[0015] Optionally, the upper end of the first air outlet extends to the first side surface, so that the first air outlet penetrates through the corner.

[0016] Furthermore, in order to be able to accelerate the speed of the cold air discharged from the first air outlet.

[0017] Optionally, the reflecting cover bulges upward. The reflecting cover includes a cover top wall and a cover side wall arranged obliquely. The cover side wall gradually approaches the air outlet wall from top to bottom in the height direction, and is correspondingly arranged between the first air outlet and the cover side wall.

[0018] Furthermore, in order to recycle the cold air blown towards the cover body multiple times to reduce the temperature of the cover body.

[0019] Optionally, an avoidance space is formed in the middle of the cover body. The machine head is arranged in the avoidance space. A flanging is arranged on the outer periphery of the cover body, and the flanging bulges upward.

[0020] Furthermore, in order to enable the cold air to smoothly change the flow direction and reduce the energy loss when the cold air changes the direction.

[0021] Optionally, the flanging includes a leeward surface and a windward surface. The leeward surface gradually extends towards the direction close to the machine head from low to high; the windward surface is connected to the leeward surface, and the windward surface gradually extends towards the direction close to the machine head from high to low.

[0022] Optionally, a plurality of first air outlets are arranged on the air outlet wall, and the plurality of first air outlets are evenly spaced on the air outlet wall.

[0023] Optionally, a hot air component for generating hot air is arranged on one side of the reflecting cover facing the cooking cavity. A second air outlet is arranged on the side wall of the connecting cylinder. A part of the cold air in the heat dissipation cavity is discharged to the outside from the first air outlet. A plurality of air distribution plates are arranged on the side wall of the connecting cylinder, and a mixing channel is formed between the plurality of air distribution plates. The mixed gas in the mixing channel is discharged from the second air outlet. A third air outlet is arranged on the reflecting cover, and the third air outlet communicates the cooking cavity with the mixing channel. The hot air in the cooking cavity enters the mixing channel through the third air outlet and is mixed with another part of the cold air in the heat dissipation cavity and then discharged to the outside.

[0024] An air fryer of the present application has an inclined surface provided on the connecting cylinder, such that the cold air generated by the cooling fan can smoothly discharge from the first air outlet to the outside, and at the same time, the cold air blows obliquely downward towards the cover body. In the prior art, when the cold air discharges from the first air outlet, the cold air basically discharges parallel to the cover body or even some cold air discharges upward, resulting in a poor cooling effect on the cover body. However, in the present application, due to the guiding effect of the inclined surface, the cold air can directly blow towards the cover body, which can improve the cooling effect of the cold air on the cover body.

[0025] In order to enable more cold air blown by the cooling fan to change its direction and blow towards the cover body, the lower end of the cooling fan is set higher than the upper end of the first air outlet. In this way, most of the cold air blown from the cooling fan will first pass through the inclined surface and then flow out to the outside from the first air outlet. The cold air passing through the inclined surface will change its original flowing direction. Since most of the cold air changes its direction and flows towards the cover body, the cooling efficiency of the cover body will be accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the air fryer in the first embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the longitudinal section structure of the air fryer in the first embodiment of the present application;

[0028] Figure 3 is a first schematic diagram of the cover body of the air fryer in the first embodiment of the present application;

[0029] Figure 4 is a second schematic diagram of the cover body of the air fryer in the first embodiment of the present application;

[0030] Figure 5 is Figure 4 a partial enlarged schematic diagram at A in;

[0031] Figure 6 is a schematic diagram of the connecting cylinder of the air fryer in the first embodiment of the present application;

[0032] Figure 7 is a schematic diagram of the cover body and the connecting cylinder of the air fryer in the first embodiment of the present application.

[0033] The reference numerals in the drawings are explained as follows:

[0034] 100, air fryer;

[0035] 200, cover body; 201, head; 202, heat dissipation cavity; 203, cooling fan; 204, drive motor;

[0036] 300, Cooker body; 301, Cooking cavity;

[0037] 400, Cover body; 401, Avoidance space; 402, Flange; 403, Windward side; 404, Leeward side;

[0038] 500, Reflector; 501, Cover top wall; 502, Cover side wall;

[0039] 600, Connecting cylinder; 601, Cylinder top wall; 602, Air outlet wall; 603, First air outlet; 604, Inclined surface; 605, First side; 606, Second side; 607, Corner; 608, Second air outlet; 609, Air distribution plate; 610, Mixing channel;

[0040] 700, Hot air component; 701, Heating fan; 702, Heating pipe. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0042] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] Such as Figure 1 、 Figure 2 And Figure 3As shown in the figure, an air fryer 100 includes a pot body 300 and a lid body 200 covering the pot body 300. The lid body 200 includes a machine head 201 and a lid body main body 400 connected to the lower end of the machine head 201. The lid body 200 is arranged above the pot body 300 to form a cooking cavity 301. A reflector 500 is arranged on the machine head 201, and a connecting cylinder 600 is arranged above the reflector 500. The reflector 500 and the connecting cylinder 600 cooperate to form a heat dissipation cavity 202. A heat dissipation fan 203 for generating cold air is arranged in the heat dissipation cavity 202. The connecting cylinder 600 includes an air outlet wall 602 extending in the height direction. The inner side surface of the air outlet wall 602 includes an inclined surface 604 inclined outward from top to bottom. A first air outlet 603 is arranged below the inclined surface 604. In the height direction, the heat dissipation fan 203 at least partially coincides with the inclined surface 604. At least part of the cold air in the heat dissipation cavity 202 flows out through the first air outlet 603 and blows towards the lid body main body 400.

[0045] A hot air component 700 for generating hot air is arranged on the side of the reflector 500 facing the cooking cavity 301. A second air outlet 608 is arranged on the side wall of the connecting cylinder 600. Part of the cold air in the heat dissipation cavity 202 is discharged to the outside from the first air outlet 603. A plurality of air distribution plates 609 are arranged on the side wall of the connecting cylinder 600. A mixing channel 610 is formed between the plurality of air distribution plates 609. The mixed gas in the mixing channel 610 is discharged from the second air outlet 608. A third air outlet is arranged on the reflector 500. The third air outlet communicates the cooking cavity 301 with the mixing channel 610. The hot air in the cooking cavity 301 enters the mixing channel 610 through the third air outlet and is mixed with another part of the cold air in the heat dissipation cavity 202 and then discharged to the outside.

[0046] The arrangement of the air distribution plates 609 can play a role in diverting the cold air generated in the heat dissipation cavity 202, so that part of the cold air flows out to the outside through the first air outlet 603, and another part of the cold air enters the mixing channel 610 to be mixed with the hot air and then is discharged to the outside through the second air outlet 608, which not only reduces the heat when the hot air is discharged but also reduces the generation of condensed water.

[0047] In this embodiment, the air fryer 100 includes a pot body 300 and a lid body 200. The lid body 200 is covered above the pot body 300, and a cooking cavity 301 for holding food is formed between the lid body 200 and the pot body 300. A reflector 500 is provided on the lid body 200, the cooking cavity 301 is arranged below the reflector 500, and a hot air assembly 700 is arranged in the cooking cavity 301. The hot air assembly 700 includes a heating tube 702 and a heating fan 701. A driving motor 204 and a cooling fan 203 are arranged above the reflector 500. The lid body 200 and the pot body 300 can be hinged, and the lid body 200 can be reversed relative to the pot body 300 to open or close the cooking cavity 301; of course, the lid body 200 can also be directly covered on the pot body 300, and of course, the lid body 200 can also be covered on the pot body 300 by a coupling method.

[0048] The lid body 200 has a first position that mutually covers with the pot body 300, and a second position where the pot body 300 is in an open state after the lid body 200 is flipped or plugged relative to the pot body 300. Taking the pot body 300 and the lid body 200 being flipped together through a hinge device as an example, before cooking, the user flips the lid body 200 to make the lid body 200 in the second position. At this time, the lid body 200 and the pot body 300 are in an open state, and the user puts the food into the cooking cavity 301. During cooking, the user flips the lid body 200 again to make the lid body 200 in the first position. At this time, the lid body 200 and the pot body 300 are in a closed state.

[0049] The lid body 200 includes a lid body main body 400, a machine head 201, and a connecting cylinder 600. The connecting cylinder 600 is connected between the lid body main body 400 and the machine head 201. The connecting cylinder 600 plays a certain guiding role in the cold air generated by the cooling fan 203, so that the cold air flows along the outer contour shape of the connecting cylinder 600. A first air outlet 603 and a second air outlet 608 are provided on the side wall of the cylinder of the connecting cylinder 600, and the heat dissipation cavity 202 and the outside are connected through the first air outlet 603 and the second air outlet 608. The heat dissipation cavity 202 and the cooking cavity 301 are connected to the outside through the first air outlet 603 and the second air outlet 608 provided on the side wall of the cylinder of the connecting cylinder 600 for corresponding gas or liquid and other substance exchanges.

[0050] The connecting cylinder 600 is a hollow cylindrical structure. The cross-section of the connecting cylinder 600 can be circular, square, elliptical, or irregular in shape, and the specific shape is not limited. Preferably, the connecting cylinder 600 is a Figure 4 cylindrical structure with a narrower upper part and a wider lower part.

[0051] Under normal circumstances, when the drive motor 204 is set inside the air fryer 100, during the operation of the drive motor 204, a relatively large amount of heat will be generated inside the drive motor 204. If the heat generated inside the drive motor 204 cannot be discharged to the outside in time, the temperature of the drive motor 204 will continue to rise, and in severe cases, the drive motor 204 will stop working. Therefore, in order to reduce the temperature of the drive motor 204, a cooling fan 203 is provided in the cooling chamber 202, and a part of the cold air generated by the cooling fan 203 is used to reduce the heat of the drive motor 204. A part of the cold air generated by the cooling fan 203 is discharged to the outside through the first air outlet 603, and the other part of the cold air enters the mixing channel 610 and is discharged to the outside through the second air outlet 608.

[0052] Preferably, the cover body 200 and the pot body 300 are hermetically connected. After the hot air component 700 generates hot air, the pressure inside the cooking chamber 301 will gradually increase due to the hot air and the water vapor generated during cooking. Since only the third air outlet is provided on the reflection cover 500 to connect the cooking chamber 301 and the mixing channel 610, the hot air will enter the mixing channel 610 through the third air outlet and thus be discharged outside the cooking chamber 301 to prevent the pressure inside the cooking chamber 301 from being too high.

[0053] The air distribution plate 609 is arranged on both sides of the second air outlet 608. The third air outlet on the reflection cover 500 is arranged opposite to the second air outlet 608 on the connecting cylinder 600. The air distribution plate 609 will guide the hot air to enter the mixing channel 610 from the third air outlet and be discharged to the outside. At this time, the function of the air distribution plate 609 can guide the hot air into the mixing channel 610 and play a guiding role in the flow path of the hot air.

[0054] When the air distribution plate 609 is provided, most of the hot air directly enters the mixing channel 610 inside the cooling chamber 202 through the third air outlet and is discharged to the outside through the second air outlet 608; if the air distribution plate 609 is not provided between the first air outlet 603 and the second air outlet 608, most of the hot air will enter the interior of the cooling chamber 202 after passing through the third air outlet. After the hot air enters the interior of the cooling chamber 202 and comes into contact with the cold air, condensed water will be generated, which will cause the air fryer 100 to be difficult to clean and affect the user experience. All the hot air in the mixing channel 610 is mixed with a part of the cold air, reducing the proportion of the cold air mixed with the hot air and avoiding the situation where the water vapor in the hot air rapidly cools and liquefies to generate condensed water.

[0055] The number of the air distribution plates 609 can be set to two. A mixing channel 610 is formed on the opposite sides of the two air distribution plates 609. By arranging the two air distribution plates 609, part of the cold air is discharged to the outside from the first air outlet 603, and part of the cold air is mixed with the hot air discharged from the mixing channel 610 and the cooking cavity 301.

[0056] In order to ensure that the cold air and the hot air entering the mixing channel 610 do not generate turbulence, at least one more air distribution plate 609 is additionally arranged between the two air distribution plates 609. As a preferred solution, the number of the air distribution plates 609 is set to four. In this way, the cold air and the hot air entering the mixing channel 610 can be divided into multiple air ducts, so that the cold air and the hot air can be smoothly discharged to the outside from the mixing channel 610, preventing the cold air and the hot air from swirling in the mixing channel 610.

[0057] The air distribution plate 609 can be a long strip plate structure or can be set as a cylindrical structure, as long as part of the cold air can enter the middle of the air distribution plate 609 to be mixed with the hot air.

[0058] The mixing channel 610 is arranged with a certain length in the radial direction of the air fryer 100. When the cooling fan 203 rotates to generate cold air, the cold air will enter the mixing channel 610 in the radial direction of the air fryer 100; the hot air will enter the mixing channel 610 in the axial direction of the air fryer 100; the wind speed of the cold air is greater than that of the hot air. Therefore, the pressure in the mixing channel 610 is less than the pressure at the third air outlet, and the hot air will be sucked into the mixing channel 610. While accelerating the entry of the hot air into the mixing channel 610, it can also effectively prevent the hot air from entering the heat dissipation cavity 202.

[0059] Since a large amount of heat is generated during the high-speed operation of the drive motor 204, and part of the heat generated by the heating tube 702 in the hot air assembly 700 is also transferred to the drive motor 204 and the connecting cylinder 600. If the drive motor 204 and the connecting cylinder 600 cannot be cooled in time, the drive motor 204 will stop working due to too rapid temperature rise, or some components of the drive motor 204 will be deformed because they cannot withstand the high temperature, and the connecting cylinder 600 will also be deformed due to being in a high-temperature state for a long time. Therefore, a cooling fan 203 is provided in the air fryer 100 to cool the drive motor 204 and the connecting cylinder 600 by the cold air generated by the cooling fan 203. The cold air generated by the cooling fan 203 is used to cool the drive motor 204 and the connecting cylinder 600. A part of the cold air generated by the cooling fan 203 is discharged to the outside from the first air outlet 603; another part of the cold air generated by the cooling fan 203 will enter the mixing channel 610 together with the hot air discharged from the cooking chamber 301. The cold air and the hot air are mixed in the mixing channel 610 to form a mixed air. The temperature of the mixed air is relatively low, and it is not easy to scald the user after being discharged to the outside from the second air outlet 608. At the same time, through the air distribution plate 609 for physical separation, it is possible to prevent the hot air from escaping from the mixing channel 610, and prevent the hot air from entering the area outside the mixing channel 610 of the cooling chamber 202 and mixing with a large amount of cold air and quickly cooling and liquefying to form condensed water; at the same time, only part of the cold air entering the mixing chamber can also prevent the temperature in the mixing channel 610 from dropping too fast and causing the generation of condensed water.

[0060] In an embodiment of the present application, the drive motor is used to drive the rotation of the heating fan 701 and the cooling fan 203, and the drive motor 204 is fixed on the connecting cylinder 600. In this way, the drive motor 204 is hoisted on the machine head 201, which can reduce the overall height of the drive motor 204, so as to achieve the effect of making the machine head 201 thinner.

[0061] In another embodiment of the present application, the connecting cylinder 600 further includes a top wall, and the upper edge of the cylinder side wall extends radially inward to form the top wall, and the drive motor 204 is installed on the top wall. The drive motor 204 is installed at the upper end of the connecting cylinder 600. Specifically, the lower end of the drive motor 204 can be installed at the upper end of the connecting cylinder 600, that is, the drive motor 204 is seated on the upper end of the connecting cylinder 600. It can also be that the upper end of the drive motor 204 is installed at the lower end of the connecting cylinder 600, that is, the drive motor 204 is hoisted on the connecting cylinder 600.

[0062] Appendix Figure 1 ~Appendix Figure 7Only an air fryer 100 with a flip cover through a hinge device is given. The connecting cylinder 600 is arranged in a cylindrical structure that is narrower at the top and wider at the bottom, and the first air outlets 603 are arranged adjacent to both sides of the second air outlet 608. The first air outlets 603 and the second air outlet 608 cover the side wall of the cylinder. Other embodiments are not shown in the form of drawings and are described in words, but they are all within the protection scope of the present invention.

[0063] When the hot air component 700 heats the food in the cooking cavity 301, in addition to being absorbed by the food, the heat generated by the hot air component 700 will also be absorbed by the cover body 400, causing the temperature of the cover body 400 to rise, which is likely to scald the user and has a certain potential safety hazard.

[0064] In order to quickly cool down the cover body 400, the cold air discharged from the first air outlet 603 is blown obliquely towards the cover body 400. When the air fryer 100 starts to work, the heating tube 702 on the hot air component 700 generates heat, and the driving motor 204 drives the heating fan 701 to rotate, thereby transferring the heat generated by the heating tube 702 to the cover body 200. At the same time, the driving motor 204 drives the cooling fan 203 to rotate to reduce the temperature of the cooling cavity 202 where the driving motor 204 is located.

[0065] The cooling fan 203 is a centrifugal fan. When the cooling fan 203 rotates, the air flow will be thrown from the trailing end of the fan blades of the cooling fan 203 towards the connecting cylinder 600. At this time, a low-pressure area with low density and low pressure is formed at the trailing end of the fan blades. In order to make the density and pressure in the low-pressure area balance with those in other areas, the air flow will enter the cooling fan 203 from the rotating shaft of the cooling fan 203 and then flow towards the low-pressure area at the trailing end of the fan blades, thereby replenishing the air flow for the low-pressure area and forming a cycle.

[0066] The air outlet wall 602 includes an inner side facing the inside of the cooling cavity 202 and an outer side facing the outside. The structure of the outer side can be circular, rectangular or other suitable shapes, and no more restrictions are made here.

[0067] In order to make the cold air coming out of the first air outlet 603 blow towards the cover body 400, the inner side is set as an inclined surface 604 that is inclined outward from top to bottom. In this way, when the cold air flies away from the centrifugal fan to the inclined surface 604, due to the effect of the inclined surface 604, the flow direction of the cold air will gradually change, making the flow direction of the cold air gradually inclined downward, so that the cold air coming out of the first air outlet 603 will blow towards the cover body 400.

[0068] The inclined surface 604 can be a surface with a fixed slope, in which case the cross-section of the inner side surface is a straight line; or the inclined surface 604 can be a surface composed of multiple different slopes from top to bottom. However, the inclined surface 604 as a whole still gradually expands outward from top to bottom, except that the slopes of the inclined surface 604 at different heights will be different.

[0069] The slopes between the inclined surface 604 and the first air outlet 603 can be the same or different.

[0070] In order to enable the cold air blown out by the cooling fan 203 to change the flow direction through the inclined surface 604, at least part of the cooling fan 203 and the inclined surface 604 need to overlap. In this way, part of the cold air generated by the cooling fan 203 can come into contact with the inclined surface 604, thereby changing the flow path of part of the cold air.

[0071] The inner side surface of the air outlet wall 602 refers to the surface facing the heat dissipation cavity 202. The cold air blown out by the cooling fan 203 flows toward the inner side surface after being thrown out from the tail end of the fan blade. When the cold air is thrown out from the cooling fan 203, it moves along the tangent direction of the tail end of the fan blade. After passing through the inclined surface 604 of the inner side surface, the cold air will change its previous running direction and move obliquely downward along the height direction of the air fryer 100. In this way, when the cold air leaves the inside of the heat dissipation cavity 202 from the first air outlet 603 and enters the outside world, the cold air still moves obliquely downward. Since the lowest point of the connecting cylinder 600 is higher than the highest point of the cover body 400, the obliquely downward blown cold air coming out from the first air outlet 603 will flow toward the cover body 400, accelerating the air flow rate around the cover body 400, thereby reducing the temperature of the cover body 400 itself and preventing safety accidents such as scalding the user.

[0072] Furthermore, in order to enable more cold air to come into contact with the inclined surface 604 to change its flow path, so that more cold air blows toward the cover body 400 and enhances the cooling effect of the cold air on the cover body 400.

[0073] The lower end of the cooling fan 203 is higher than the upper end of the first air outlet 603.

[0074] Since there is an inclined surface 604 above the first air outlet 603, when the cooling fan 203 is completely located above the first air outlet 603, only a small amount of cold air, or even no cold air, directly flows out of the first air outlet 603 to the outside. And this part of the cold air flowing directly to the outside moves along the tangential direction of the fan blade end, so when this part of the cold air comes out of the first air outlet 603, it flows parallel to or away from the cover body 400 and cannot effectively cool the cover body 400. Most of the cold air will first contact the inclined surface 604, and the flow path of most of the cold air is changed due to the action of the inclined surface 604, so that most of the cold air flows towards the cover body 400, accelerating the cooling effect on the cover body 400. In this embodiment, the height of the cooling fan 203 can be completely covered by the height of the inclined surface 604, or the upper end height of the cooling fan 203 can be higher than the upper section height of the inclined surface 604.

[0075] Further, in order to enable most of the cold air generated by the cooling fan 203 to change its flow direction and blow towards the cover body 400.

[0076] The lower end of the cooling fan 203 is not lower than the lower end of the inclined surface 604, and the upper end of the cooling fan 203 is not higher than the upper end of the inclined surface 604.

[0077] For example, a light source is placed at the center position of the heat dissipation cavity 202, and the light emitted by the light source is irradiated on the cooling fan 203 and the inclined surface 604 in the left-right direction (the up-down direction is the height direction of the air fryer 100, and the left-right direction is the width direction of the air fryer 100). A vertical projection plane is arranged outside the inclined surface 604, and the projections of the cooling fan 203 and the inclined surface 604 are projected on the projection plane. On the projection plane, the projected height of the inclined surface 604 completely covers the projected height of the cooling fan 203. In this way, all the cold air generated by the cooling fan 203 needs to pass through the inclined surface 604 before leaving the heat dissipation cavity 202 from the first air outlet 603, and the cold air passing through the inclined surface 604 can change the wind direction of the cold air, so that all the cold air can flow obliquely downward, and thus all the cold air can blow towards the cover body 400, accelerating the cooling efficiency of the cover body 400.

[0078] Further, in order to enable the cold air blown out from the first air outlet 603 to converge better.

[0079] The inner side surface includes a first side surface 605 and a second side surface 606 connected in sequence from top to bottom. A corner 607 is formed between the first side surface 605 and the second side surface 606. The inclined surface 604 is provided on the first side surface 605. The lower end of the cooling fan 203 is located above the corner 607. The corner 607 is greater than 90° and less than 180°. At least a part of the first air outlet 603 is located on the second side surface 606.

[0080] The connecting cylinder 600 includes a cylinder top wall 601 and an air outlet wall 602. The upper edge of the air outlet wall 602 extends radially inward to form a top wall. The driving motor 204 is installed on the cylinder top wall 601. The driving motor 204 is installed at the upper end of the connecting cylinder 600. Specifically, the lower end of the driving motor 204 can be installed at the upper end of the connecting cylinder 600, that is, the driving motor 204 is seated on the upper end of the connecting cylinder 600. Or, the upper end of the driving motor 204 can be installed at the lower end of the connecting cylinder 600, that is, the driving motor 204 is suspended on the connecting cylinder 600.

[0081] The first side surface 605 and the second side surface 606 extend downward from the cylinder top wall 601. In order to enable the cold air to converge better after passing through the first side surface 605, the first side surface 605 and the second side surface 606 are set with different inclined slopes, so a corner 607 is formed between the first side surface 605 and the second side surface 606. When the cold air passes through the inclined surface 604 on the first side surface 605, the cold air will change the flow direction and flow obliquely downward. Although the inclined inclined surface 604 can change the flow direction of the cold air, at the same time of changing the direction of the cold air, part of the cold air will spread out due to the impact of the cold air on the inclined surface 604, which will affect the flow rate of the cold air when flowing out from the first air outlet 603. In order to converge the relatively scattered cold air passing through the first inclined surface 604 together, a corner 607 is provided between the first side surface 605 and the second side surface 606. Through the setting of the corner 607, the scattered cold air can be re-converged together, so that more cold air can pass through the first air outlet 603 in a short time, thereby increasing the flow rate of the cold air when flowing out from the first air outlet 603.

[0082] In order to enable the downward-flowing cold air to still flow downward after passing through the first air outlet 603 and thus blow onto the cover body 400, the second side surface 606 should contract inward relative to the first side surface 605. At this time, the second side surface 606 will also exert a certain force on the cold air, causing the cold air to flow downward obliquely again. The angle of the corner 607 is greater than 90° and less than 180°. As a preferred solution, the angle of the corner 607 is set to 163°. The second side surface 606 with a contracted setting can also reduce the overall volume of the connecting cylinder 600, and will not cause a large part of the second side surface 606 to protrude outside the machine head 201. Of course, the second side surface 606 can also extend along the extension direction of the first side surface 605, that is, at this time, the first side surface 605 and the second side surface 606 form a plane.

[0083] The first air outlet 603 can be entirely arranged on the second side surface 606, or a part of the first air outlet 603 is arranged on the second side surface 606 and another part is arranged on the first side surface 605.

[0084] Furthermore, in order to enable more areas of the cover body 400 to be blown by the cold air simultaneously, so that the entire cover body 400 can be cooled simultaneously.

[0085] The upper end of the first air outlet 603 extends to the first side surface 605, so that the first air outlet 603 penetrates through the corner 607.

[0086] Since the first air outlet 603 located on the first side surface 605 is only affected by the inclined surface 604 on the cold air, the angle of the cold air coming out of the first side surface 605 is changed less and can be blown onto the cover body 400 at a farther distance; the first air outlet 603 located on the second side surface 606 is not only affected by the inclined surface 604 on the cold air, but also affected by the second side surface 606 on the cold air. Therefore, the angle of the cold air coming out of the second side surface 606 is changed more and can be blown onto the cover body 400 at a closer distance. In this way, the farther cold air blown out from the first air outlet 603 on the first side surface 605 and the closer cold air blown out from the first air outlet 603 on the second side surface 606 can combine to roughly cover the entire cover body 400, enabling the entire cover body 400 to be cooled quickly.

[0087] Figure 4 The arrow direction in the figure shows a schematic diagram of the flow path of the cold air after flowing out from the heat dissipation fan 203, passing through the inclined surface 604 and the first air outlet 603 to change the flow direction, and finally contacting the cover body 400.

[0088] Furthermore, in order to be able to accelerate the speed of the cold air discharged from the first air outlet 603.

[0089] The reflector 500 protrudes upward. The reflector 500 includes a top wall 501 and a side wall 502 arranged obliquely. The side wall 502 of the cover and the air outlet wall 602 gradually approach each other from top to bottom in the height direction, and the first air outlet 603 and the side wall 502 of the cover are correspondingly arranged.

[0090] After the cold air is thrown from the trailing end of the fan blades of the cooling fan 203 to the connecting cylinder 600, the cold air will rotate circumferentially downward and gradually approach the first air outlet 603 in a swirling manner. The reflector 500 protrudes upward along the height direction of the air fryer 100, so that part of the reflector coincides with part of the connecting cylinder, reducing the space of the heat dissipation cavity 202. When the reflector 500 extends into the heat dissipation cavity 202, before the cold air enters between the reflector 500 and the connecting cylinder 600, the cold air swirls downward in a relatively open place; when the cold air enters between the reflector 500 and the connecting cylinder 600, the cold air will swirl downward in a relatively narrow place. At this time, because the area where the cold air flows becomes narrower, the flow rate of the cold air between the reflector 500 and the connecting cylinder 600 will be accelerated, thereby accelerating the flow rate of the gas above the cover body 400.

[0091] In order to further improve the flow rate of the cold air between the reflector 500 and the connecting cylinder 600, the side wall 502 of the cover and the air outlet wall 602 are arranged to gradually approach each other from top to bottom in the height direction. This will gradually reduce the distance between the reflector 500 and the connecting cylinder 600, thereby further accelerating the flow rate of the cold air between the reflector 500 and the connecting cylinder 600.

[0092] As Figure 4 and Figure 5 shown, further, in order to recycle the cold air blown towards the cover body 400 multiple times to reduce the temperature of the cover body 400.

[0093] An avoidance space 401 is provided in the middle of the cover body 400, the machine head 201 is arranged in the avoidance space 401, and a flanging 402 is provided on the outer periphery of the cover body 400, and the flanging 402 protrudes upward.

[0094] An avoidance space 401 is provided in the middle area of the cover body 400, so that the cold air coming out of the first air outlet 603 can flow evenly towards the cover body 400. When the cold air flows from the middle area of the cover body 400 towards the outer periphery of the cover body 400, the cold air will change its flow direction due to the downward-sloping flow direction coming into contact with the cover body 400, and change into an outward flow direction parallel to the cover body 400. Since there is an upward-protruding flange 402 provided at the outer periphery of the cover body 400, the cold air will change its flow direction again due to the action of the flange 402. From the previous outward flow direction parallel to the cover body 400, part of the cold air will change into a direction that slopes downward and flows towards the central area of the cover body 400, or part of the cold air will change into an inward flow direction parallel to the cover body 400. The effect of cooling the cover body 400 by the cold air again is achieved.

[0095] Furthermore, in order to enable the cold air to smoothly change its flow direction and reduce the energy loss when the cold air changes direction.

[0096] The flange 402 includes a leeward surface 403 and a windward surface 404. The leeward surface 403 extends gradually from low to high towards the direction close to the machine head 201; the windward surface 404 is connected to the leeward surface 403, and the windward surface 404 extends gradually from high to low towards the direction close to the machine head 201.

[0097] The leeward surface 403 that extends gradually from low to high towards the direction close to the machine head 201 can enhance the overall strength of the flange 402. The windward surface 404 that extends gradually from high to low towards the direction close to the machine head 201 can change the flow direction of the cold air, and because the windward surface 404 is a gradual change type, the cold air can reduce energy loss when changing the wind direction through the windward surface 404, so that most of the cold air can blow towards the cover body 400 again.

[0098] Such as Figure 6 and Figure 7 As shown, a plurality of first air outlets 603 are provided on the air outlet wall 602, and the plurality of first air outlets 603 are evenly spaced and distributed on the air outlet wall 602.

[0099] In order to enable the cold air to be evenly discharged from the first air outlet 603 to the outside, the first air outlets 603 are spaced and evenly arranged on the cylindrical side wall of the connecting cylinder 600, and the first air outlets 603 cover the entire air outlet wall 602 of the connecting cylinder 600. In this way, when the cold air moves from the top of the connecting cylinder 600 towards the first air outlet 603, the cold air at different circumferential positions can be discharged from the inside of the heat dissipation cavity 202 to the cover body 400 after moving basically the same distance and passing through basically the same time.

[0100] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification. When the technical features in different embodiments are embodied in the same drawing, the drawing can be regarded as simultaneously disclosing the combination examples of the various embodiments involved.

[0101] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. An air fryer, comprising a pot body and a cover body covering the pot body. The cover body includes a machine head and a cover body main body connected to the lower end of the machine head. The cover body covers the upper part of the pot body to form a cooking cavity. A reflector is provided on the machine head, and a connecting cylinder is provided above the reflector. The reflector and the connecting cylinder cooperate to form a heat dissipation cavity, and a heat dissipation fan for generating cold air is provided in the heat dissipation cavity. It is characterized in that, The connecting tube includes an air outlet wall extending in the height direction, the inner side surface of the air outlet wall includes an inclined surface inclined outward from top to bottom, a first air outlet is provided below the inclined surface, and in the height direction, the cooling fan at least partially overlaps with the inclined surface, and at least part of the cold air in the cooling cavity flows out through the first air outlet and blows toward the cover body.

2. An air fryer according to claim 1, wherein, The lower end of the heat dissipation fan is higher than the upper end of the first air outlet.

3. An air fryer according to claim 1, characterized in that, The lower end of the heat dissipation fan is not lower than the lower end of the inclined surface, and the upper end of the heat dissipation fan is not higher than the upper end of the inclined surface.

4. An air fryer according to claim 1, characterized in that, The inner side surface includes a first side surface and a second side surface connected in sequence from top to bottom, and a turning angle is formed between the first side surface and the second side surface. The inclined surface is arranged on the first side surface, and the lower end of the cooling fan is located above the turning angle. The turning angle is greater than 90° and less than 180°, and the first air outlet is at least partially located on the second side surface.

5. An air fryer according to claim 4, characterized in that, The upper end of the first air outlet extends to the first side surface, so that the first air outlet passes through the corner.

6. An air fryer according to claim 1, characterized in that, The reflective cover protrudes upward, and includes a cover top wall and an inclined cover side wall. The cover side wall and the air outlet wall gradually approach each other in height from top to bottom, and the first air outlet is correspondingly arranged between the cover side wall.

7. An air fryer according to claim 1, characterized in that, An escape space is provided in the middle of the cover body, the machine head is arranged in the escape space, and a flange is provided on the outer periphery of the cover body, and the flange protrudes upward.

8. An air fryer according to claim 7, characterized in that, The flange includes a leeward surface and a windward surface, wherein the leeward surface gradually extends from low to high toward the direction close to the nose; the windward surface is connected to the leeward surface, and the windward surface gradually extends from high to low toward the direction close to the nose.

9. An air fryer according to claim 1, characterized in that, A plurality of first air outlets are arranged on the air outlet wall, and the plurality of first air outlets are evenly spaced and distributed on the air outlet wall.

10. An air fryer according to claim 1, characterized in that, A hot air component for generating hot air is arranged on the side of the reflector facing the cooking cavity, a second air outlet is arranged on the side wall of the connecting tube, a part of the cold air in the heat dissipation cavity is discharged to the outside through the first air outlet, a plurality of air dividing plates are arranged on the side wall of the connecting tube, a mixing channel is formed between the plurality of air dividing plates, the mixed gas in the mixing channel is discharged from the second air outlet, a third air outlet is arranged on the reflector, the third air outlet connects the cooking cavity and the mixing channel, the hot air in the cooking cavity enters the mixing channel through the third air outlet, is mixed with another part of the cold air in the heat dissipation cavity and is discharged to the outside.

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