Exhaust outlet structure, machine head assembly and air fryer

Abstract

The utility model discloses an exhaust outlet structure, handpiece subassembly and air fryer, the exhaust outlet structure includes intermediate plate, outer exhaust hood, first baffle and transverse convex rib, intermediate plate is suitable for being connected with the casing of handpiece subassembly, intermediate plate is provided with first exhaust hole that is communicated with the heat dissipation chamber in the casing and with second exhaust hole that is communicated with the heating chamber in the casing, the outer exhaust hood is arranged on the outer side face of the middle plate and surrounds to form a first exhaust channel communicated with the second exhaust holes, third exhaust holes communicated with the first exhaust channel are formed in the peripheral face of the outer exhaust hood, the first baffle is arranged on the peripheral face of the outer exhaust hood, and the first baffle is located on the side, away from the middle plate, of the third exhaust holes; and the transverse convex ribs are arranged on the outer end face of the outer exhaust hood. The exhaust outlet structure provided by the utility model has the advantage that the sprayed high-temperature gas has little influence on the temperature of the wall surface.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, and in particular to an exhaust vent structure, a head assembly and an air fryer. Background Art

[0002] An air fryer heats the air in a heating chamber through a heating tube, and then uses the fan blades in the heating chamber to blow the high-temperature air into the cooking chamber, so that the hot air circulates in the cooking chamber to cook the food. The air fryer is equipped with an exhaust vent structure to discharge the high-temperature gas and the heat dissipation air for the motor to the outside. The exhaust vent structure is usually set on the rear side of the shell. Based on user habits, when placing the air fryer, the user usually puts the back side against the wall or the wall of the kitchen wall, that is, the exhaust vent structure is against the wall. At this time, the high-temperature gas exhaust holes on the exhaust vent structure are close to the wall. The discharged high-temperature gas and the exhaust vent structure itself are likely to transfer heat to the wall, increasing the risk of fire or damage to the wall due to excessive temperature. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides an air outlet structure, which has the advantage that the ejected high-temperature gas has little impact on the temperature of the wall surface.

[0005] The embodiments of the present invention also provide a head assembly and an air fryer.

[0006] The exhaust outlet structure of an embodiment of the present utility model includes an intermediate plate, an outer exhaust hood, a first baffle and transverse ribs, the intermediate plate is suitable for being connected to the shell of the head assembly, the intermediate plate is provided with a first exhaust hole connected to the heat dissipation cavity in the shell and a second exhaust hole connected to the heat generation cavity in the shell; the outer exhaust hood is arranged on the outer side of the intermediate plate, the outer exhaust hood surrounds and forms a first exhaust channel connected to the second exhaust hole, and the outer peripheral surface of the outer exhaust hood is provided with a third exhaust hole connected to the first exhaust channel; the first baffle is arranged on the outer peripheral surface of the outer exhaust hood, and the first baffle is located on the side of the third exhaust hole away from the intermediate plate; the transverse rib is arranged on the outer end surface of the outer exhaust hood.

[0007] According to the exhaust vent structure of the embodiment of the present invention, after the middle plate is connected to the shell of the air fryer, the heat-dissipating gas in the heat-dissipating cavity is discharged to the outside through the first exhaust hole in the middle plate. The high-temperature gas in the heat-dissipating cavity enters the first exhaust channel through the second exhaust hole in the middle plate, and finally is discharged to the outside through the third exhaust hole. The third exhaust hole is designed on the outer peripheral surface of the outer exhaust hood so that the initial flow direction of the high-temperature gas when it is discharged to the outside is perpendicular to the horizontal direction, thereby preventing it from directly blowing against the side walls. Furthermore, the design of the first baffle means that even if the heat-dissipating gas discharged to the outside carries the high-temperature gas with it and blows towards the wall, it will be blocked by the first baffle, effectively reducing the risk of the high-temperature gas directly heating the wall and causing it to overheat.

[0008] Moreover, the transverse ribs replace the outer exhaust hood in direct contact with the wall, so that the outer exhaust hood is separated from the wall, thereby effectively reducing the heat exchange efficiency between the outer exhaust hood and the wall, and the wall is less likely to overheat and catch fire or be damaged.

[0009] Optionally, the third exhaust holes and the first baffle are both disposed on the top surface of the outer exhaust hood, with a portion of the first exhaust holes located above the outer exhaust hood; and along a projection plane perpendicular to the axial direction of the first exhaust holes, the projection of the first baffle covers at least a portion of the projection of the first exhaust holes. Thus, the heat-dissipating gas exhausted from the first exhaust holes located above the outer exhaust hood will intersect with the high-temperature gas exhausted from the third exhaust holes, thereby cooling the high-temperature gas. Simultaneously, the first baffle can also separate the cooled high-temperature gas from the wall, further reducing the risk of excessive wall heating.

[0010] Optionally, the first baffle includes a first baffle, a second baffle, and a third baffle connected in sequence along a first direction, the first direction and the axial and height directions of the first exhaust hole are perpendicular to each other, the first baffle and the third baffle are both located on the side of the second baffle facing the middle plate, and the first baffle and the third baffle are located on opposite sides of each third exhaust hole along the first direction. The exhaust outlet structure of the present invention is provided with a first baffle, a second baffle, and a third baffle surrounding a U-shaped chamber with a molded opening facing the middle plate. When the second baffle guides the high-temperature gas to flow in the first direction, it is also guided by the first baffle and the third baffle to flow in a direction away from the wall. As a result, the first baffle has a better blocking effect on the high-temperature gas, and the risk of the high-temperature gas directly blowing on the wall is reduced.

[0011] Optionally, the exhaust port structure further includes an inner connecting sleeve, which is arranged on the inner side surface of the intermediate plate, and is used to connect to the inner lining in the head assembly, and the inner connecting sleeve surrounds and forms a second exhaust channel connecting the heating chamber and the second exhaust hole. The exhaust port structure of the present invention is provided with an inner connecting sleeve to form a second exhaust channel connecting the heating chamber and the second exhaust hole, thereby achieving good guidance of the high-temperature gas discharged from the heating chamber and still located in the shell, and facilitating the rapid discharge of the high-temperature gas to the outside through the second exhaust hole.

[0012] Optionally, the exhaust vent structure further includes a second baffle, which is disposed on the outer circumferential surface of the inner connecting sleeve and / or the inner side surface of the intermediate plate, and at least a portion of the first exhaust holes and the second baffle are arranged sequentially along the direction of gas flow within the heat dissipation cavity. The exhaust vent structure of the present invention includes a second baffle to change the flow direction of the heat dissipating gas within the heat dissipating cavity, ensuring that a portion of the heat dissipating gas always flows toward the first exhaust holes, thereby increasing the speed at which the heat dissipating gas is discharged from the first exhaust holes to the outside world, thereby better cooling the high-temperature gas.

[0013] Optionally, the peripheral wall of the inner connecting sleeve separates the heat dissipation cavity and the second exhaust channel; or, the outer peripheral surface of the inner connecting sleeve is provided with a fourth exhaust hole connecting the heat dissipation cavity and the second exhaust channel. The exhaust port structure of the present invention can be set to separate the heat dissipation cavity and the second exhaust channel, ensuring that the high-temperature gas in the hot air cavity can only be discharged to the outside through the third exhaust hole, avoiding the high-temperature gas from entering the heat dissipation cavity and affecting the heat dissipation efficiency of the motor. Alternatively, the heat dissipation cavity can be connected to the second exhaust channel through the fourth exhaust hole, thereby allowing part of the high-temperature gas to enter the heat dissipation cavity and mix with the heat dissipation gas and be discharged to the outside through the first exhaust hole. At this time, the exhaust path of the high-temperature gas is dispersed, and the high-temperature gas discharged to the outside has a lower temperature when it contacts the wall, and the wall is less likely to catch fire or be damaged.

[0014] Optionally, the end surface of the inner connecting sleeve facing away from the middle plate is a curved surface that contacts the outer surface of the inner liner, and the end surface of the inner connecting sleeve facing away from the middle plate is provided with a guide column and a threaded hole;

[0015] The inner lining is provided with corresponding guide holes and connection holes, the guide post is adapted to fit within the guide hole, and the inner connection sleeve is adapted to be connected to the inner lining via a threaded member that passes through the connection hole and threadedly engages with the threaded hole. The exhaust vent structure of the present invention achieves positioning of the inner connection sleeve and the inner lining through the cooperation of the guide hole and the guide post, and connects the inner connection sleeve and the inner lining via the threaded member, thereby achieving stable and reliable communication between the heating chamber and the second exhaust channel.

[0016] Optionally, the housing is provided with a mounting hole for the intermediate plate to engage, and the outer peripheral surface of the intermediate plate is provided with a limiting flange, so that when the intermediate plate is partially engaged in the mounting hole, the limiting flange abuts against the inner surface of the housing. The exhaust vent structure of the present utility model is provided with a limiting flange to clamp and fix the inner connecting sleeve and part of the intermediate plate between the inner liner and the housing, thereby ensuring the reliable installation of the exhaust vent structure in the housing.

[0017] Optionally, the maximum axial dimension of the outer exhaust hood and the transverse ribs as a whole in the first exhaust hole is d, where d ≥ 50 mm. The exhaust vent structure of the present invention ensures a sufficiently large gap between the housing and the wall by setting d ≥ 50 mm, providing a longer path for high-temperature gases to reach the wall, effectively reducing the temperature of the high-temperature gases upon reaching the wall, and lowering the risk of fire or damage to the wall.

[0018] According to an embodiment of the present invention, the head assembly includes a shell, an inner lining and an exhaust port structure as described in any of the above embodiments, the inner lining is installed in the shell, the inner lining surrounds the heating cavity, the heat dissipation cavity is formed between the outer surface of the inner lining and the inner surface of the shell, the middle plate is connected to the shell, and the outer exhaust hood is exposed outside the shell.

[0019] The technical advantages of the head assembly according to the embodiment of the present invention are the same as the technical advantages of the exhaust port structure of the above embodiment, and will not be repeated here.

[0020] The air fryer according to the embodiment of the present invention includes the head assembly as described in the above embodiment.

[0021] The technical advantages of the air fryer according to the embodiment of the present invention are the same as the technical advantages of the head assembly of the above embodiment, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 2 is a schematic diagram of an air fryer according to an embodiment of the present invention.

[0023] Figure 2 2 is a schematic diagram of an air fryer according to an embodiment of the present invention, wherein a portion of the shell is hidden.

[0024] Figure 3 It is a cross-sectional view of an air fryer according to an embodiment of the present utility model.

[0025] Figure 4 yes Figure 3 A magnified view of .

[0026] Figure 5 It is a schematic diagram of the air outlet structure and part of the shell according to an embodiment of the present utility model.

[0027] Figure 6 It is a schematic diagram of the air outlet structure according to an embodiment of the present utility model.

[0028] Figure 7 2 is another schematic diagram of the air outlet structure according to an embodiment of the present invention.

[0029] Figure 8 It is a schematic diagram of the lining in the head assembly according to an embodiment of the present utility model.

[0030] Reference numerals:

[0031] 1. Middle plate; 11. First exhaust hole; 12. Second exhaust hole; 13. Limiting flange; 2. External exhaust cover; 21. First exhaust channel; 22. Third exhaust hole; 3. First baffle; 31. First stop; 32. Second stop; 33. Third stop; 4. Horizontal rib; 5. Internal connecting sleeve; 51. Second exhaust channel; 52. Fourth exhaust hole; 53. Guide column; 54. Threaded hole; 6. Second baffle; 7. Shell; 71. Heat dissipation chamber; 8. Lining; 81. Guide hole; 82. Connecting hole; 83. Heat dissipation chamber. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] The following combination Figures 1-8 The air outlet structure according to an embodiment of the present invention is described.

[0034] The exhaust port structure of the embodiment of the present utility model includes an intermediate plate 1, an outer exhaust hood 2, a first baffle 3 and a transverse rib 4. The intermediate plate 1 is suitable for being connected to the housing 7 of the head assembly. The intermediate plate 1 is provided with a first exhaust hole 11 connected to the heat dissipation cavity 71 in the housing 7 and a second exhaust hole 12 connected to the heat generation cavity 83 in the housing 7. The outer exhaust hood 2 is provided on the outer side of the intermediate plate 1. The outer exhaust hood 2 surrounds and forms a first exhaust channel 21 connected to the second exhaust hole 12. The outer peripheral surface of the outer exhaust hood 2 is provided with a third exhaust hole 22 connected to the first exhaust channel 21. The first baffle 3 is provided on the outer peripheral surface of the outer exhaust hood 2. The first baffle 3 is located on the side of the third exhaust hole 22 facing away from the intermediate plate 1. The transverse rib 4 is provided on the outer end surface of the outer exhaust hood 2.

[0035] According to the exhaust vent structure of the embodiment of the present invention, after the middle plate 1 is connected to the shell 7 of the air fryer, the heat-dissipating gas in the heat-dissipating cavity 71 is discharged to the outside through the first exhaust hole 11 on the middle plate 1, and the high-temperature gas in the heat-dissipating cavity 83 enters the first exhaust channel 21 through the second exhaust hole 12 on the middle plate 1, and is finally discharged to the outside through the third exhaust hole 22. The third exhaust hole 22 is arranged on the outer peripheral surface of the outer exhaust cover 2, so that the initial flow direction of the high-temperature gas when it is discharged to the outside is perpendicular to the horizontal direction, and thus does not directly blow against the side walls. At the same time, the design of the first baffle 3 means that even if the heat-dissipating gas discharged to the outside brings the high-temperature gas to blow toward the wall, it will be blocked by the first baffle 3, effectively reducing the risk of the high-temperature gas directly heating the wall and causing the wall to overheat.

[0036] Moreover, the transverse ribs 4 replace the outer exhaust hood 2 in direct contact with the wall, so that the outer exhaust hood 2 is separated from the wall, thereby effectively reducing the heat exchange efficiency between the outer exhaust hood 2 and the wall, and the wall is less likely to overheat and catch fire or be damaged.

[0037] It should be noted that the intermediate plate 1 is mounted on the rear cover of the housing 7. The end surface area of ​​the transverse rib 4 away from the outer exhaust hood 2 is smaller than the area of ​​the outer end surface of the outer exhaust hood 2. As a result, the heat exchange area between the transverse rib 4 and the wall is smaller than the heat exchange area when the outer exhaust hood 2 is in contact with the wall, thereby further reducing the heat exchange efficiency between the exhaust port structure and the wall. At the same time, the cross-sectional area of ​​the transverse rib 4 can gradually decrease or decrease in a stepwise manner in the direction away from the outer exhaust hood 2. The transverse rib 4 can be integrally formed with the outer exhaust hood 2, or the transverse rib 4 can be made of a material with better thermal insulation properties.

[0038] In addition, the heat dissipation cavity 71 is a cavity in the housing 7 where the motor and the heat dissipation blades are located, and the heating cavity 83 is a cavity formed around the liner 8 and connected to the cooking cavity.

[0039] In some embodiments, as Figure 4 and Figure 7 As shown, the third exhaust hole 22 and the first baffle 3 are both provided on the top surface of the outer exhaust cover 2, and a portion of the first exhaust hole 11 is located above the outer exhaust cover 2. Along a projection plane perpendicular to the axial direction of the first exhaust hole 11, the projection of the first baffle 3 covers at least a portion of the projection of the first exhaust hole 11.

[0040] As a result, the heat dissipation gas discharged from the first exhaust hole 11 located above the external exhaust hood 2 will intersect with the high-temperature gas discharged from the third exhaust hole 22 to cool the high-temperature gas. At the same time, the first baffle 3 can also separate the cooled high-temperature gas and the wall, further reducing the risk of excessive wall temperature increase.

[0041] For example, Figure 7As shown, on a projection plane perpendicular to the axial direction of the first exhaust holes 11, the projection of the portion of the first exhaust holes 11 located above the outer exhaust hood 2 is directly above the projection of the outer exhaust hood 2, and the projection of the first baffle 3 covers the projection of this portion of the first exhaust holes 11. Furthermore, other portions of the first exhaust holes 11 are located on both sides of the outer exhaust hood 2 in the width direction of the air fryer. That is, the first exhaust holes 11 are arranged around the outer exhaust hood 2, facilitating the effective cooling of the high-temperature gas by the heat dissipation gas.

[0042] It should be noted that the number of the third exhaust holes 22 provided on the top surface of the outer exhaust cover 2 can be two, and the two third exhaust holes 22 are spaced apart along the width direction of the air fryer. Figure 5 As shown, the third exhaust hole 22 can also be set on the bottom surface of the outer exhaust cover 2, so that part of the high-temperature steam is discharged downward to the outside.

[0043] In some embodiments, as Figure 7 As shown, the first baffle 3 includes a first stopper 31, a second stopper 32, and a third stopper 33, which are sequentially connected along a first direction. The first direction, the axial direction, and the height direction of the first exhaust hole 11 are perpendicular to each other. The first stopper 31 and the third stopper 33 are both located on the side of the second stopper 32 facing the middle plate 1. The first stopper 31 and the third stopper 33 are located on opposite sides of each third exhaust hole 22 along the first direction.

[0044] That is, the first baffle 31, the second baffle 32 and the third baffle 33 surround the U-shaped cavity formed with an opening toward the middle plate 1. When the second baffle 32 guides the high-temperature gas to flow in the first direction, it will also be guided by the first baffle 31 and the third baffle 33 to flow in the direction away from the wall. As a result, the first baffle 3 has a better blocking effect on the high-temperature gas, and the risk of the high-temperature gas blowing directly into the wall is lower.

[0045] For example, the first direction is the width direction of the air fryer, and the outer side surface of the first baffle 3 is coplanar with the outer side surface of the outer exhaust hood 2 .

[0046] In some embodiments, as Figure 4-Figure 7 As shown, the exhaust port structure also includes an inner connecting sleeve 5, which is arranged on the inner side surface of the middle plate 1. The inner connecting sleeve 5 is used to be connected to the inner lining 8 in the head assembly. The inner connecting sleeve 5 surrounds and forms a second exhaust channel 51 connecting the heating chamber 83 and the second exhaust hole 12.

[0047] The inner connecting sleeve 5 forms a second exhaust channel 51 connecting the heating chamber 83 and the second exhaust hole 12, thereby achieving good guidance of the high-temperature gas discharged from the heating chamber 83 and still located in the shell 7, and facilitating the rapid discharge of the high-temperature gas to the outside through the second exhaust hole 12.

[0048] For example, the inner connecting sleeve 5 and the middle plate 1 are integrally formed, and the inner connecting sleeve 5 is fixedly connected to the inner liner 8 to achieve relative fixation between the middle plate 1 and the shell 7 .

[0049] In some embodiments, as Figure 5-Figure 7 As shown, the exhaust port structure also includes a second baffle 6, which is arranged on the outer peripheral surface of the inner connecting sleeve 5 and / or the inner side surface of the middle plate 1, and at least part of the first exhaust holes 11 and the second baffle 6 are arranged in sequence along the gas flow direction in the heat dissipation cavity 71.

[0050] The second baffle 6 can change the flow direction of the heat dissipation gas in the heat dissipation cavity 71, ensuring that a portion of the heat dissipation gas always flows toward the first exhaust hole 11, so as to increase the speed of the heat dissipation gas discharged from the first exhaust hole 11 to the outside, thereby better achieving cooling of the high-temperature gas.

[0051] For example, Figure 6 As shown, the second baffle 6 is perpendicular to the first direction. The second baffle 6 is arranged on the outer peripheral surface of the inner connecting sleeve 5 and the inner side surface of the middle plate 1. Most of the first exhaust holes 11 and the second exhaust holes 12 are located on the same side of the second baffle 6.

[0052] In some embodiments, as Figure 6 As shown, the peripheral wall of the inner connecting sleeve 5 separates the heat dissipation cavity 71 from the second exhaust channel 51, thereby ensuring that the high-temperature gas in the hot air cavity can only be discharged to the outside through the third exhaust hole 22, preventing the high-temperature gas from entering the heat dissipation cavity 71 and affecting the heat dissipation efficiency of the motor.

[0053] Or, as Figure 4 、 Figure 5 and Figure 7 As shown, the outer peripheral surface of the inner connecting sleeve 5 is provided with a fourth exhaust hole 52 connecting the heat dissipation cavity 71 and the second exhaust channel 51, thereby allowing part of the high-temperature gas to enter the heat dissipation cavity 71 and mix with the heat dissipation gas and be discharged to the outside through the first exhaust hole 11. At this time, the exhaust path of the high-temperature gas is dispersed, and the temperature of the high-temperature gas discharged to the outside is lower when it contacts the wall, and the wall is less likely to catch fire or be damaged.

[0054] In some embodiments, as Figure 2 、 Figure 4 and Figure 8 As shown, the end surface of the inner connecting sleeve 5 facing away from the middle plate 1 is a curved surface that contacts the outer surface of the inner liner 8. The end surface of the inner connecting sleeve 5 facing away from the middle plate 1 is provided with a guide post 53 and a threaded hole 54. The inner liner 8 is provided with a guide hole 81 and a connecting hole 82, respectively. The guide post 53 is adapted to fit within the guide hole 81. The inner connecting sleeve 5 is adapted to be connected to the inner liner 8 via a threaded member that passes through the connecting hole 82 and threadably engages with the threaded hole 54.

[0055] The inner connecting sleeve 5 and the inner lining 8 are positioned by the cooperation of the guide hole 81 and the guide column 53, and the inner connecting sleeve 5 and the inner lining 8 are connected by screws to achieve stable and reliable communication between the heating chamber 83 and the second exhaust channel 51.

[0056] like Figure 6 and Figure 8 As shown, there are two guide columns 53 and two threaded holes 54. The two guide columns 53 and the two threaded holes 54 are arranged at four corners on the end face of the inner connecting sleeve 5 away from the middle plate 1. The end face of the inner connecting sleeve 5 away from the middle plate 1 is in contact with the outer surface of the inner lining 8. Combined with the plug-in fit of the two guide columns 53 and the two guide holes 81, the relative fixation of the inner connecting sleeve 5 and the inner lining 8 is guaranteed. At this time, it is convenient for the threaded part to pass through the connecting hole 82 and threadedly fit with the threaded hole 54. The connection between the inner connecting sleeve 5 and the inner lining 8 is convenient and reliable.

[0057] In some embodiments, as Figure 2 、 Figure 5-Figure 7 As shown, the shell 7 is provided with a mounting hole for the middle plate 1 to cooperate with, and the outer peripheral surface of the middle plate 1 is provided with a limiting flange 13. When the middle plate 1 is partially fitted in the mounting hole, the limiting flange 13 abuts against the inner surface of the shell 7.

[0058] By setting the limiting flange 13 to abut against the inner surface of the shell 7, the inner connecting sleeve 5 and part of the middle plate 1 are clamped and fixed between the inner lining 8 and the shell 7, ensuring the reliable installation of the exhaust port structure in the shell 7.

[0059] For example, the cross-sectional outer contour of the mounting hole matches that of the intermediate plate 1 and is substantially square, and the limiting flange 13 is in contact with the inner surface of the rear cover of the housing 7 to ensure that the intermediate plate 1 is sealed to the rear cover.

[0060] In some embodiments, the maximum dimension of the outer exhaust cover 2 and the transverse rib 4 as a whole in the axial direction of the first exhaust hole 11 is d, where d≥50 mm.

[0061] By setting d≥50mm to ensure a sufficiently large gap between the shell 7 and the wall, the high-temperature gas is given a longer path to reach the wall, effectively reducing the temperature of the high-temperature gas when it reaches the wall, and reducing the risk of fire or damage to the wall.

[0062] For example, the distance between the end surface of the limiting flange 13 facing away from the middle plate 1 and the outer surface of the middle plate 1 is d, and d can be 50 mm, 55 mm, and 60 mm.

[0063] According to an embodiment of the present invention, the head assembly includes a shell 7, an inner lining 8 and an exhaust port structure as in any of the above embodiments. The inner lining 8 is installed in the shell 7, and the inner lining 8 forms a heating cavity 83. A heat dissipation cavity 71 is formed between the outer surface of the inner lining 8 and the inner surface of the shell 7. The middle plate 1 is connected to the shell 7, and the outer exhaust hood 2 is exposed outside the shell 7.

[0064] The technical advantages of the head assembly according to the embodiment of the present invention are the same as the technical advantages of the exhaust port structure of the above embodiment, and will not be repeated here.

[0065] The air fryer according to the embodiment of the present invention includes the head assembly as described in the above embodiment.

[0066] The technical advantages of the air fryer according to the embodiment of the present invention are the same as the technical advantages of the head assembly of the above embodiment, and will not be repeated here.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0072] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. An air outlet structure, characterized in that: include: an intermediate plate (1), the intermediate plate (1) being adapted to be connected to a housing (7) of a head assembly, the intermediate plate (1) being provided with a first exhaust hole (11) communicating with a heat dissipation cavity (71) in the housing (7) and a second exhaust hole (12) communicating with a heat dissipation cavity (83) in the housing (7); an outer exhaust hood (2), the outer exhaust hood (2) being arranged on the outer side of the middle plate (1), the outer exhaust hood (2) surrounding a first exhaust passage (21) communicating with the second exhaust hole (12), and the outer peripheral surface of the outer exhaust hood (2) being provided with a third exhaust hole (22) communicating with the first exhaust passage (21); a first baffle (3), the first baffle (3) being arranged on the outer peripheral surface of the outer exhaust cover (2), the first baffle (3) being located on a side of the third exhaust hole (22) facing away from the middle plate (1); A transverse convex rib (4) is provided on the outer end surface of the outer exhaust hood (2).

2. The air outlet structure according to claim 1, characterized in that: The third air exhaust hole (22) and the first baffle (3) are both arranged on the top surface of the outer air exhaust cover (2), and part of the first air exhaust hole (11) is located above the outer air exhaust cover (2); On a projection surface perpendicular to the axial direction of the first air exhaust hole (11), the projection of the first baffle (3) covers at least a portion of the projection of the first air exhaust hole (11).

3. The air outlet structure according to claim 2, characterized in that: The first baffle (3) comprises a first baffle (31), a second baffle (32) and a third baffle (33) which are sequentially connected along a first direction; the first direction, the axial direction and the height direction of the first exhaust hole (11) are perpendicular to each other; the first baffle (31) and the third baffle (33) are both located on the side of the second baffle (32) facing the middle plate (1); and the first baffle (31) and the third baffle (33) are located on opposite sides of each third exhaust hole (22) along the first direction.

4. The air outlet structure according to claim 1, characterized in that: The exhaust port structure further includes an inner connecting sleeve (5), which is arranged on the inner side surface of the intermediate plate (1), and is used to be connected to the inner lining (8) in the head assembly, and the inner connecting sleeve (5) surrounds and forms a second exhaust channel (51) connecting the heating chamber (83) and the second exhaust hole (12).

5. The air outlet structure according to claim 4, characterized in that: The air outlet structure further includes a second baffle (6), which is arranged on the outer peripheral surface of the inner connecting sleeve (5) and / or the inner side surface of the intermediate plate (1), and at least part of the first air outlet holes (11) and the second baffle (6) are arranged in sequence along the gas flow direction in the heat dissipation cavity (71).

6. The air outlet structure according to claim 4, characterized in that: The peripheral wall of the inner connecting sleeve (5) separates the heat dissipation cavity (71) and the second exhaust channel (51); Alternatively, the outer peripheral surface of the inner connecting sleeve (5) is provided with a fourth exhaust hole (52) communicating with the heat dissipation cavity (71) and the second exhaust channel (51).

7. The air outlet structure according to claim 4, characterized in that: The end surface of the inner connecting sleeve (5) facing away from the middle plate (1) is a curved surface that contacts the outer surface of the inner lining (8), and the end surface of the inner connecting sleeve (5) facing away from the middle plate (1) is provided with a guide column (53) and a threaded hole (54); The inner lining (8) is provided with a guide hole (81) and a connecting hole (82) correspondingly, the guide column (53) is adapted to fit in the guide hole (81), and the inner connecting sleeve (5) is adapted to be connected to the inner lining (8) via a threaded member that passes through the connecting hole (82) and is threadedly engaged with the threaded hole (54).

8. The air outlet structure according to claim 1, characterized in that: The shell (7) is provided with a mounting hole for the intermediate plate (1) to cooperate with, and the outer peripheral surface of the intermediate plate (1) is provided with a limiting flange (13). When the intermediate plate (1) is partially fitted in the mounting hole, the limiting flange (13) abuts against the inner surface of the shell (7).

9. The air outlet structure according to claim 1, characterized in that: The maximum dimension of the outer exhaust cover (2) and the transverse rib (4) as a whole in the axial direction of the first exhaust hole (11) is d, wherein d≥50mm.

10. A head assembly, characterized in that: It comprises a shell (7), an inner lining (8) and an exhaust vent structure according to any one of claims 1 to 9, wherein the inner lining (8) is installed in the shell (7), the inner lining (8) surrounds and forms the heat-generating cavity (83), the outer surface of the inner lining (8) and the inner surface of the shell (7) surround and form the heat-dissipating cavity (71), the intermediate plate (1) is connected to the shell (7), and the outer exhaust hood (2) is exposed outside the shell (7).

11. An air fryer, characterized in that: Comprising a handpiece assembly according to claim 10.

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