Air guide assembly and cooking appliance having the same

Abstract

The application provides a wind guide assembly and a cooking utensil with the same. The wind guide assembly comprises: a wind guide cylinder having an air inlet and an air outlet; a fan comprising a motor and an axial fan blade connected with the motor, the axial fan blade being rotatably arranged in the wind guide cylinder; a heating structure arranged above the air outlet; and a partition arranged between the axial fan blade and the air outlet, the partition separating the air outlet into at least two sub-air outlets. The application can solve the problem of short service life of the cooking utensil in the prior art.

Description

Technical Field

[0001] This invention relates to the field of small household appliance technology, and more specifically, to a wind guide assembly and a cooking appliance having the same. Background Technology

[0002] Currently, the side-entry air fryers in existing technology use axial flow fans. Because the airflow from axial flow fans is uneven radially and lacks blades in the central area, the airflow in the central region is often very low. This causes heat from the heating element to radiate to the fan blades, easily damaging the central area of ​​the fan blades near the heating element or the motor, thus shortening the fryer's lifespan. Summary of the Invention

[0003] The main objective of this invention is to provide an air guide assembly and a cooking appliance having the same, in order to solve the technical problem of short service life of cooking appliances in the prior art.

[0004] To achieve the above objectives, according to one aspect of the present invention, an air guiding assembly is provided, comprising: an air guiding duct having an air inlet and an air outlet; a fan including a motor and an axial flow fan blade connected to the motor, the axial flow fan blade being rotatably disposed within the air guiding duct; a heating structure disposed above the air outlet; and a separator disposed between the axial flow fan blade and the air outlet, the separator dividing the air outlet into at least two sub-air outlets.

[0005] By applying the technical solution provided by this invention, when air flows to the separator, the separator divides the air outlet into at least two sub-air outlets. Thus, the air at each sub-air outlet flows circumferentially along that outlet. By changing the position of the separator, the airflow at each outlet position can be reasonably adjusted, directing some of the airflow flowing circumferentially to the center of the outlet. This increases the airflow in the center of the outlet, facilitating the removal of heat from the center and reducing the heat radiated from the center of the outlet to the axial fan blades. This reduces damage to the central area of ​​the axial fan blades near the heating structure or the motor, effectively improving the lifespan of the air fryer.

[0006] Furthermore, the separator is a partition plate. The above structure is simple, easy to manufacture, and can effectively play a role in turbulence.

[0007] Furthermore, there are multiple partition plates, which are spaced apart. This structure allows the air outlet to be divided into multiple sub-outlets. The air in each sub-outlet flows along its periphery. By adjusting the position of each baffle plate, the airflow at different locations within the outlet can be easily adjusted, thus directing some of the airflow along the circumference of the outlet to the center, thereby better protecting the axial fan blades.

[0008] Furthermore, the air outlet is rectangular, wherein multiple partitions are spaced apart along the length of the rectangular outlet; or, multiple partitions are spaced apart along the width of the rectangular outlet. This structure facilitates adjustment of the airflow at different locations within the air outlet, allowing air to be blown from different positions.

[0009] Furthermore, there are multiple partitions, with at least two partitions arranged alternately. This structure not only increases the air volume in the center of the air outlet but also improves the overall uniformity of airflow at the air outlet to a certain extent.

[0010] Furthermore, there are multiple partitions, with at least two of them arranged vertically. This layout effectively increases the number of sub-outlets, improving the overall airflow uniformity to some extent.

[0011] Furthermore, the bottom thickness of the partition plate is T1, and the top thickness of the partition plate is T2, where T1 ≤ T2. By adopting the above structure, and making the bottom thickness of the partition plate less than or equal to the top thickness, it is possible to facilitate the flow of air from the bottom to the top within the air duct, thus playing a guiding role to a certain extent.

[0012] Furthermore, the ratio of the top thickness T2 to the bottom thickness T1 of the partition plate satisfies: 1 ≤ T2 / T1 ≤ 1.5. When the ratio of T2 / T1 is too small, specifically when it is less than 1, the top thickness will be less than the bottom thickness, hindering the smooth flow of air from the bottom to the top. When the ratio of T2 / T1 is too large, specifically when it is greater than 1.5, the partition plate will occupy more space and increase its obstruction of airflow, further hindering smooth airflow. Therefore, by setting T2 / T1 within the aforementioned range, it is possible to facilitate smooth airflow and provide some guidance for the airflow.

[0013] Furthermore, the partition plate gradually increases in size from the air inlet to the air outlet, with a gradient angle of β, where 1° ≤ β ≤ 3°. When the value of β is too small, specifically when β is less than 1°, the gradient is too small, which is not conducive to air guidance. When the value of β is too large, specifically when β is greater than 3°, the top thickness is too large, which is not conducive to air outlet. Therefore, by setting β within the above range, both air intake and air guidance are facilitated, as well as air outlet.

[0014] Furthermore, the separator and the axial fan blades are spaced apart by a distance H in the axial direction of the air guide tube. This structure prevents the separator from interfering with the operation of the axial fan blades during the operation of the air guide assembly, effectively ensuring the smooth operation of the axial fan blades.

[0015] Furthermore, the distance H between the separator and the axial fan blades satisfies: 0.5mm ≤ H ≤ 10mm. With this structural arrangement, the minimum distance between the separator and the axial fan blades is 0.5mm to avoid interference with the normal operation of the axial fan blades, thus ensuring the stability of the airflow. Additionally, considering the overall length of the air duct and the turbulence-causing effect of the separator, the maximum distance between the separator and the axial fan blades is 10mm. When the distance between the separator and the axial fan blades is greater than 10mm, the distance is too large, and the separator cannot effectively provide turbulence control.

[0016] Furthermore, a clearance groove is provided at the end of the separator facing the axial fan blade. This structure effectively prevents interference between the separator and the protruding structure, thus ensuring the normal operation of the axial fan blade.

[0017] Furthermore, the air guide duct includes a guide section and a tapering section connected together. The end of the guide section furthest from the tapering section forms an air inlet, and the end of the tapering section furthest from the guide section forms an air outlet. The flow area of ​​the tapering section gradually decreases from the air inlet to the air outlet. Axial flow fan blades are disposed within the guide section, and separators are disposed within the tapering section. This structure facilitates an increase in the outlet air pressure.

[0018] According to another aspect of the present invention, a cooking appliance is provided, the cooking appliance including a wind guide assembly, the wind guide assembly being the wind guide assembly provided above, the cooking appliance mainly including an air fryer or a cooking appliance with a baking function. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of an air guide assembly having a partition extending along the width direction of a rectangular air outlet, according to an embodiment of the present invention, is shown.

[0021] Figure 2 It shows Figure 1 A sectional view of the structure in the middle;

[0022] Figure 3 It shows Figure 1 A schematic diagram of the external structure of the structure;

[0023] Figure 4 It shows Figure 1 Top view of the structure;

[0024] Figure 5 It shows Figure 1A schematic diagram showing the placement of the partition plates in the structure;

[0025] Figure 6 A top view of an axial flow fan blade provided according to an embodiment of the present invention is shown;

[0026] Figure 7 A front view of an axial flow fan blade provided according to an embodiment of the present invention is shown;

[0027] Figure 8 It shows Figure 1 A schematic diagram of the airflow direction in the structure;

[0028] Figure 9 A schematic diagram of an air guide assembly having a separator extending along the length direction of a rectangular air outlet, according to an embodiment of the present invention, is shown.

[0029] Figure 10 It shows Figure 9 A sectional view of the structure in the middle;

[0030] Figure 11 It shows Figure 9 A schematic diagram of the external structure of the structure;

[0031] Figure 12 It shows Figure 9 Top view of the structure;

[0032] Figure 13 It shows Figure 9 A schematic diagram showing the placement of the partition plates in the structure;

[0033] Figure 14 It shows Figure 9 A schematic diagram of the airflow direction in the structure;

[0034] Figure 15 A schematic diagram of a wind guide assembly with staggered partitions provided according to an embodiment of the present invention is shown;

[0035] Figure 16 It shows Figure 15 A sectional view of the structure in the middle;

[0036] Figure 17 It shows Figure 15 A schematic diagram of the external structure of the structure;

[0037] Figure 18 It shows Figure 15 Top view of the structure;

[0038] Figure 19 It shows Figure 15 A schematic diagram showing the placement of the partition plates in the structure;

[0039] Figure 20 It shows Figure 15 A schematic diagram of the airflow direction in the structure;

[0040] Figure 21 A schematic diagram of a wind-guiding assembly having a plurality of spacers spaced apart along its length, according to an embodiment of the present invention, is shown.

[0041] Figure 22 It shows Figure 21 A sectional view of the structure in the middle;

[0042] Figure 23 It shows Figure 21 A schematic diagram of the external structure of the structure;

[0043] Figure 24 It shows Figure 21 A schematic diagram showing the placement of the partition plates in the structure;

[0044] Figure 25 It shows Figure 21 A schematic diagram of the airflow direction in the structure;

[0045] Figure 26 A front view of the air guide assembly of the structure provided in this embodiment is shown;

[0046] Figure 27 It shows Figure 26 A schematic diagram of the structure in the BB direction.

[0047] The above figures include the following reference numerals:

[0048] 10. Air guide duct; 11. Air guide section; 12. Gradient section; 13. Air inlet; 14. Air outlet; 20. Fan; 21. Motor; 22. Axial flow fan blade; 30. Heating structure; 31. Winding plate; 32. Heating wire; 33. Wire; 34. Heating wire fixing bracket; 40. Partition plate; 41. Clearance groove; 50. Motor fixing bracket; 60. Shock-absorbing pad; 70. Flat pad; 80. Screen; 90. Heat insulation frame; 100. Nut. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] like Figures 1 to 27As shown, an embodiment of the present invention provides an air guiding assembly, which includes an air guiding duct 10, a fan 20, a heating structure 30, and a separator. The air guiding duct 10 has an air inlet 13 and an air outlet 14. The fan 20 includes a motor 21 and an axial flow fan blade 22 connected to the motor 21. The axial flow fan blade 22 is rotatably disposed inside the air guiding duct 10. The heating structure 30 is disposed above the air outlet 14. The separator is disposed between the axial flow fan blade 22 and the air outlet 14, dividing the air outlet 14 into at least two sub-air outlets 14. In this embodiment, the heating structure 30 includes a winding plate 31, a heating wire 32, a wire 33, a heating wire fixing bracket 34, and a heating housing. The heating housing is disposed at the air outlet 14 and communicates with the air guiding duct 10. The heating wire 32 is wound on the winding plate 31, and the wire 33 is connected to the heating wire 32. The heating wire fixing bracket 34 is used to fix the heating wire 32.

[0051] The air guide assembly provided in this embodiment is mainly used in cooking appliances, including air fryers. Due to the inherent characteristics of the axial fan blade 22, when the axial fan blade 22 rotates, the air will flow along the circumference of the axial fan blade 22. When air flows to the separator, the separator divides the air outlet 14 into at least two sub-outlets 14. Air at each sub-outlet 14 flows circumferentially around the outlet 14. By changing the position of the separator, the airflow at each outlet position of the air outlet 14 can be reasonably adjusted. This directs some of the airflow along the circumference of the outlet 14 to the center of the outlet 14, increasing the airflow in the center. This facilitates the removal of heat from the center of the outlet 14, reducing the heat radiated from the center of the outlet 14 to the axial fan blades 22. This reduces damage to the central area of ​​the axial fan blades 22 near the heating structure 30 or the motor 21, effectively improving the lifespan of the air fryer. It should be noted that the center of the air outlet 14 is not limited to the center point; it can also include the area excluding the periphery of the outlet 14.

[0052] Preferably, in one embodiment, the air outlet 14 has a symmetrical structure, and a separator is arranged along the axis of symmetry of the air outlet 14, dividing the air outlet 14 into two sub-air outlets 14 of the same size. In this way, the turbulence effect of the separator facilitates better guidance of the airflow from the periphery of the air outlet 14 to the central area of ​​the air outlet 14, thereby increasing the airflow in the central area of ​​the air outlet 14 and better protecting the axial fan blades 22. Specifically, the central area of ​​the air outlet 14 mainly refers to the airflow at the position of the axis of symmetry of the air outlet 14, and the middle part of the air outlet 14 includes the central area of ​​the air outlet 14.

[0053] Specifically, in this embodiment, the separator can be a separator plate 40, which extends along the axial direction of the air guide duct 10. This structural arrangement simplifies the separator plate 40, making it easy to manufacture, and effectively turbulence, directing airflow from the periphery of the air outlet 14 to its center. Specifically, the separator's structure is not limited to a separator plate 40; it only needs to be able to divide the air outlet 14 into at least two sub-outlets. The separator can also be a grille structure, an open ring structure (the opening of the open ring structure is connected to the inner wall of the air guide duct 10 to guide airflow from the inner wall of the air guide duct 10 into the ring), etc. The separator plate 40 is not limited to a straight plate structure and can be an arc-shaped plate.

[0054] In another embodiment, there are multiple partition plates 40, which are spaced apart. Specifically, the multiple partition plates 40 can be arranged in parallel or not in parallel. Using multiple partition plates 40 facilitates dividing the air outlet 14 into multiple sub-air outlets 14. The air in each sub-air outlet 14 flows along its periphery. By changing the position of each baffle plate, the airflow at different locations of the air outlet 14 can be easily adjusted, thus directing some of the airflow along the periphery of the air outlet 14 to the center of the air outlet 14, thereby better protecting the axial fan blades 22.

[0055] In another embodiment, the air outlet 14 is rectangular. Multiple partitions 40 are spaced apart along the length of the rectangular outlet, thus dividing the air outlet 14 into multiple narrow sub-outlets 14. Alternatively, the multiple partitions 40 are spaced apart along the width of the rectangular outlet, thus dividing the air outlet 14 into multiple approximately square sub-outlets 14. This allows for easy adjustment of the airflow at different locations within the air outlet 14, according to specific usage requirements, so that air is blown from different positions.

[0056] In another embodiment, there are multiple partition plates 40, with at least two partition plates 40 arranged alternately. Compared to a structure with partition plates 40 that are not arranged alternately, the arrangement in this embodiment can increase the number of sub-outlets 14, which can not only increase the air volume in the middle of the outlet 14, but also improve the overall air uniformity of the outlet 14 to a certain extent.

[0057] In another embodiment, there are multiple partition plates 40, with at least two of them arranged vertically. Specifically, the multiple partition plates 40 can be separate structures assembled together; or, the multiple partition plates 40 can be a cross-shaped integrated structure for easy installation. The layout structure in this embodiment can also effectively increase the number of sub-air outlets 14, thereby improving the overall airflow uniformity of the outlets 14 to a certain extent.

[0058] Specifically, the bottom thickness of the partition plate 40 can be T1, and the top thickness of the partition plate 40 can be T2, where T1 ≤ T2. By making the bottom thickness of the partition plate 40 less than or equal to the top thickness, it is easier for the air in the air guide duct 10 to flow from the bottom to the top, thus playing a guiding role to a certain extent.

[0059] Preferably, the ratio of the thickness of the top end of the partition plate 40 (T2) to the thickness of the bottom end (T1) satisfies the condition: 1 ≤ T2 / T1 ≤ 1.5. If the ratio of T2 / T1 is too small, specifically less than 1, the top thickness will be less than the bottom thickness, hindering the smooth flow of air from the bottom to the top. If the ratio of T2 / T1 is too large, specifically greater than 1.5, the partition plate 40 will occupy more space and increase the obstruction of airflow, further hindering smooth airflow. Therefore, by setting T2 / T1 within the above range, it is possible to facilitate smooth airflow and provide some guidance. Specifically, 0.5mm ≤ T1 ≤ 2mm, setting reasonable dimensions facilitates effective airflow guidance.

[0060] Specifically, the partition plate gradually increases in size along the direction from the air inlet 13 to the air outlet 14, and the gradient angle of the partition plate 40 is β, where 1°≤H≤3°. When the value of β is too small, specifically when β is less than 1°, the gradient is too small, which is not conducive to air guidance. When the value of β is too large, specifically when β is greater than 3°, the top thickness is too large, which is not conducive to air outlet at 14. Therefore, by setting β within the above range, both air intake and air guidance are facilitated, as well as air outlet.

[0061] In all the above embodiments, the separator and the axial fan blade 22 are spaced apart by a distance H in the axial direction of the air guide duct 10. This structural arrangement avoids interference between the separator and the axial fan blade 22 during operation of the air guide assembly, effectively ensuring the smooth operation of the axial fan blade 22.

[0062] Specifically, the distance H between the separator and the axial fan blade 22 satisfies: 0.5mm ≤ H ≤ 10mm. The minimum distance between the separator and the axial fan blade 22 is 0.5mm to avoid interference with the normal operation of the axial fan blade 22, thereby ensuring the stability of the airflow. Furthermore, considering the overall length of the air duct 10 and the turbulence effect of the separator, the maximum distance between the separator and the axial fan blade 22 is 10mm. When the distance between the separator and the axial fan blade 22 is greater than 10mm, the distance is too large, and the separator cannot effectively play its turbulence-disrupting role.

[0063] In all the above embodiments, a clearance groove 41 is provided at the end of the separator facing the axial flow fan blade 22. Specifically, the side of the axial flow fan blade 22 facing the air outlet 14 has a protruding structure, which is mainly used for fixing the axial flow fan blade 22 nut 100. By providing the clearance groove 41, mutual interference between the separator and the nut 100 can be effectively avoided, so as to ensure the normal operation of the axial flow fan blade 22.

[0064] In all the above embodiments, the air guide duct 10 includes a guide section 11 and a tapering section 12 connected together. The end of the guide section 11 away from the tapering section 12 forms an air inlet 13, and the end of the tapering section 12 away from the guide section 11 forms an air outlet 14. The flow area of ​​the tapering section 12 gradually decreases in the direction from the air inlet 13 to the air outlet 14. An axial flow fan blade 22 is disposed within the guide section 11, and a separator is disposed within the tapering section 12. With this structure, the air outlet pressure at the air outlet 14 can be increased by setting the tapering section 12. After the air outlet 14 is divided into multiple sub-outlets 14 by the separator, the flow area of ​​the sub-outlets 14 is smaller than the air outlet area of ​​the main outlet 14, which also increases the air pressure at the sub-outlets 14 to a certain extent. Specifically, the height of the separator 40 can be the same as the height of the tapering section 12, or the height of the separator 40 can be slightly smaller than the height of the tapering section 12.

[0065] In all the above embodiments, the air guiding assembly also includes a motor 21, which is driven and connected to the axial flow fan blade 22. The motor 21 and the axial flow fan blade 22 together form a fan 20. The air guiding assembly also includes a motor mounting bracket 50, a shock-absorbing pad 60, a flat pad 70, a screen 80, and a heat insulation frame 90. The motor mounting bracket 50 is used to fix the motor 21. The shock-absorbing pad 60 is disposed at the motor mounting bracket 50, and the flat pad 70 is disposed on the axial flow fan blade 22. By setting the shock-absorbing pad 60, the vibration transmitted to the air guiding duct 10 can be reduced, thereby improving the installation stability of the air guiding duct 10. The screen 80 is disposed at the air outlet 14, and the heat insulation frame 90 is disposed on the outside of the heating shell to reduce the heat loss of the heating shell and improve the heat utilization efficiency.

[0066] Another embodiment of the present invention provides a cooking appliance, which includes a wind guide assembly, which is the wind guide assembly provided in all the above embodiments. Specifically, the cooking appliance includes an air fryer, a rice cooker, an electric pressure cooker, or a multi-functional heating pot with baking, cooking, and food preparation functions.

[0067] As can be seen from the above description, the above embodiments of the present invention achieve the following technical effects: increasing the air volume in the middle region of the axial fan blades to reduce the damage of the heating structure to the middle region or the blower of the axial fan blades, thereby improving the service life of the fan and thus improving the service life of the air fryer.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0070] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0071] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0072] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An air guiding component, characterized in that, include: The air guide tube (10) has an air inlet (13) and an air outlet (14). A fan (20) includes a motor (21) and an axial flow fan blade (22) connected to the motor (21), the axial flow fan blade (22) being rotatably disposed inside the air guide tube (10); A heating structure (30) is disposed above the air outlet (14); A separator is disposed between the axial fan blade (22) and the air outlet (14), the separator dividing the air outlet (14) into at least two sub-air outlets; The air guide duct (10) includes a guide section (11) and a tapering section (12) connected together. The air inlet (13) is formed at the end of the guide section (11) away from the tapering section (12), and the air outlet (14) is formed at the end of the tapering section (12) away from the guide section (11). The flow area of ​​the tapering section (12) gradually decreases in the direction from the air inlet (13) to the air outlet (14). The axial flow fan blade (22) is disposed in the guide section (11), and the separator is disposed in the tapering section (12). The separator is a separator plate (40); there are multiple separator plates (40), and the multiple separator plates (40) are spaced apart; the air outlet (14) is a rectangular opening, wherein the multiple separator plates (40) are spaced apart along the length direction of the rectangular opening; or, the multiple separator plates (40) are spaced apart along the width direction of the rectangular opening.

2. The air guide assembly according to claim 1, characterized in that, There are multiple partition plates (40), and at least two of the multiple partition plates (40) are staggered.

3. The air guiding assembly according to claim 1, characterized in that, There are multiple partition plates (40), and at least two of the multiple partition plates (40) are arranged vertically.

4. The air guiding assembly according to claim 1, characterized in that, The bottom thickness of the partition plate (40) is T1, and the top thickness of the partition plate (40) is T2, where T1 ≤ T2.

5. The air guide assembly according to claim 4, characterized in that, The ratio of the thickness of the top end of the partition plate (40) to the thickness of the bottom end of the partition plate (40) is such that 1 ≤ T2 / T1 ≤ 1.

5.

6. The air guiding assembly according to claim 1, characterized in that, The partition plate (40) gradually increases in size along the direction from the air inlet (13) to the air outlet (14), and the gradient angle of the partition plate (40) is β, where 1°≤β≤3°.

7. The air guiding assembly according to claim 1, characterized in that, The separator and the axial flow fan blade (22) are spaced apart by a distance H in the axial direction of the air guide tube (10).

8. The air guide assembly according to claim 7, characterized in that, The distance H between the separator and the axial flow fan blade (22) satisfies: 0.5mm≤H≤10mm.

9. The air guiding assembly according to claim 1, characterized in that, The separator is provided with an avoidance groove (41) at the end facing the axial flow fan blade (22).

10. A cooking utensil, characterized in that, The cooking appliance includes a wind guide assembly, which is the wind guide assembly according to any one of claims 1 to 9.

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