Air guide assembly and cooking appliance having the same

By designing the tapered section of the air guide component and optimizing the heating structure, the problem of insufficient hot air pressure in air fryers has been solved, achieving uniform heating of food from top to bottom and improving cooking results.

CN114532865BActive Publication Date: 2025-12-09ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
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Patent Information

Application Number
CN202011300318.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-11-18
Publication Date
2025-12-09
Estimated Expiration
2040-11-18

AI Technical Summary

Technical Problem

The distance between the fan and the bottom of the pot in existing side-intake air fryers is far, resulting in low hot air pressure, which causes the food to burn on the top and remain raw on the bottom, resulting in poor cooking.

Method used

An air guide assembly is adopted, including air guide components, axial flow fans and heating structures. The air pressure at the air outlet is increased by the tapered section design. Combined with the rectangular air outlet and heating shell, the air duct structure is optimized to improve the air pressure and heating efficiency of hot air reaching the bottom of the pot.

Benefits of technology

It improves the cooking effect of cooking utensils, ensuring that food is heated evenly from top to bottom, solving the problem of undercooked food at the bottom, and improving the cooking quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a wind guide assembly and a cooking utensil with the same, which comprises a wind guide piece with an air inlet and an air outlet, an axial flow fan arranged in the wind guide piece, and a heating structure arranged above the air outlet, wherein the wind guide piece is provided with a flow pipe section and a tapered section in communication, the air inlet is located at one end of the flow pipe section away from the tapered section, the air outlet is located at one end of the tapered section away from the flow pipe section, and the flow area of the tapered section gradually decreases in the direction from the air inlet to the air outlet. The technical scheme provided by the application can solve the technical problem of poor cooking effect of the cooking utensil in the prior art.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of small household appliances, in particular to a wind guide assembly and a cooking appliance having the same. BACKGROUND

[0002] At present, for the air fryer with side air inlet, the fan used is an axial fan or a centrifugal fan. Since the distance from the fan to the bottom of the pot to be heated is relatively far, the air pressure of the hot air is small. Thus, the upper layer of the cooked food is easily burnt while the bottom layer is still raw, which affects the cooking effect. SUMMARY

[0003] The main purpose of the present application is to provide a wind guide assembly and a cooking appliance having the same, so as to solve the technical problem of poor cooking effect of the cooking appliance in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a wind guide assembly is provided, comprising: a wind guide member having an air inlet and an air outlet; an axial fan arranged in the wind guide member; a heating structure arranged above the air outlet; wherein the wind guide member has a flow-through pipe section and a tapered section arranged in communication, the air inlet is located at one end of the flow-through pipe section away from the tapered section, the air outlet is located at one end of the tapered section away from the flow-through pipe section, and the flow area of the tapered section gradually decreases in the direction from the air inlet to the air outlet.

[0005] Under the action of the axial fan, the air flows from the air inlet to the air outlet, and when the air passes through the tapered section, the flow area of the tapered section gradually decreases in the direction from the air inlet to the air outlet. Thus, the air outlet pressure at the air outlet can be increased, so as to increase the air pressure of the hot air, thereby facilitating the hot air to blow to the bottom of the pot body, so as to better cook the bottom layer of the food, thereby improving the cooking effect of the cooking appliance. Therefore, the wind guide assembly provided by the present embodiment can solve the technical problem of poor cooking effect of the cooking appliance in the prior art.

[0006] Further, the flow area of the air inlet is greater than the flow area of the air outlet, so as to better improve the air outlet pressure at the air outlet.

[0007] Further, the flow-through pipe section is of an equal cross-section structure. Such structure is simple in structure, easy to produce and manufacture, and facilitates the air guide through the flow-through pipe section.

[0008] Further, the air outlet is a rectangular opening. The above structure can facilitate the shape of the air outlet to match the shape of the heating part of the heating structure, so as to better emit hot air and improve the air outlet effect.

[0009] Further, the tapered section is provided with a communication port at one end close to the flow pipe section, and the communication port is a circular port. The above structure can facilitate the matching of the communication port and the flow pipe section, so as to facilitate the smooth flow of air in the flow pipe section to the tapered section through the communication port.

[0010] Further, the diameter of the communication port is d, the air outlet is a rectangular port, and the width of the air outlet is b, wherein 2.5≤d / b≤3.5. When the value of d / b is too small, specifically when the value of d / b is less than 2.5, the difference between the width of the air outlet and the diameter of the communication port is not large, and the tapering degree of the tapered section is relatively gentle, which is not conducive to effectively improving the air pressure at the air outlet. When the value of d / b is too large, specifically when the value of d / b is greater than 3.5, although the air pressure at the air outlet is improved, the air outlet area is greatly reduced, and the air at the air outlet cannot cover the heating part inside the heating structure, thus not conducive to improving the heating effect. By setting the value of d / b within the above range, both the air pressure and the air outlet area can be effectively ensured.

[0011] Further, the length of the flow pipe section is H1, and the length of the tapered section is H2, wherein 2≤H1 / H2≤3. When the ratio of H1 / H2 is too small, specifically when the ratio of H1 / H2 is less than 2, the length of the flow pipe section is too small, which is not conducive to the guiding effect of the flow pipe section on the air. When the ratio of H1 / H 2的 When the ratio of H1 / H2 is too large, specifically when the ratio of H1 / H2 is greater than 3, the length of the flow pipe section is too long, which increases the flow time of the air in the flow pipe section, and is not conducive to effectively improving the heating efficiency. By setting the ratio of H1 / H2 within the above range, both the guiding of the air and the effective improvement of the heating effect can be achieved.

[0012] Further, the tapering angle of the tapered section is α, and 35°≤α≤50°. When the tapering angle α is too small, specifically when α is less than 35°, although the pressure increasing effect is improved, the angle is too small, which makes the air outlet shape similar to a long strip, and is not conducive to the connection of the air outlet and the heating structure, and is not conducive to improving the heating effect. When the tapering angle α is too large, specifically when α is greater than 50°, although the shape of the air outlet is ensured, the tapering degree of the tapered section is small, which is not conducive to effectively increasing the air pressure at the air outlet, and is not conducive to improving the heating effect. By setting the tapering angle α within the above range, both the reasonable air outlet area and shape of the air outlet and the effective improvement of the heating effect can be achieved.

[0013] Further, the heating structure comprises a heating shell and a heating piece, the heating piece is arranged in the heating shell, the heating shell is arranged at one end of the tapering section away from the flow passage section, and the heating shell is in communication with the tapering section. With the arrangement, the air is flowed into the heating shell after being pressurized by the tapering section, and is flowed out after being heated by the heating piece in the heating shell. In this way, the air pressure of the hot air is ensured, and the air is effectively heated, and the heat loss is reduced.

[0014] Further, the heating shell has a heating inlet and a heating outlet, the heating inlet is in communication with the air outlet, and the heating outlet is located at the side of the heating shell. The heating inlet and the heating outlet are both rectangular openings, and the heating piece is arranged opposite to the heating outlet. By arranging the heating inlet and the heating outlet as rectangular openings, the shapes of the heating inlet, the heating outlet and the heating piece are matched, so that the air entering the heating inlet can be uniformly blown to the heating piece, and the air heated by the heating piece can be uniformly blown to the heating outlet, thereby facilitating the smooth blowing of the hot air and improving the cooking effect.

[0015] Further, the air guide assembly further comprises a heat insulation frame arranged outside the heating structure to reduce the heat dissipation of the heating shell and improve the heat utilization efficiency.

[0016] Further, the air guide assembly further comprises a partition arranged in the tapering section, and the partition extends in the direction from the axial flow fan to the air outlet. The above structure can divide the tapering section into at least two flow passage sections to disturb the air flow in the tapering section, so that part of the circumferential air flows to the middle region of the tapering section.

[0017] According to another aspect of the present application, a cooking appliance is provided, and the air guide assembly is the air guide assembly provided above. The cooking appliance comprises an air fryer or an electric rice cooker or an electric pressure cooker or a multifunctional heating pot with baking, cooking and making dishes. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the present application, explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 Fig. 1 shows a structure schematic view of an air guide assembly provided according to an embodiment of the present application;

[0020] Figure 2 Fig. 2 shows a sectional view of the air guide assembly provided according to an embodiment of the present application;

[0021] Figure 3 Fig. 3 shows an external structure schematic view of the air guide assembly provided according to an embodiment of the present application;

[0022] Figure 4 A top view of the air guiding assembly according to an embodiment of the present application is shown;

[0023] Figure 5 A position diagram of the partition of the air guiding assembly according to an embodiment of the present application is shown;

[0024] Figure 6 A front view of the fan blade according to an embodiment of the present application is shown;

[0025] Figure 7 A top view of the fan blade according to an embodiment of the present application is shown;

[0026] Figure 8 A size diagram of the air guiding assembly according to an embodiment of the present application is shown.

[0027] Among the above drawings, the following reference signs are included:

[0028] 10, air guiding member; 11, flow pipe section; 12, tapered section; 13, air inlet; 14, air outlet; 20, axial flow fan; 21, motor; 22, fan blade; 30, heating structure; 31, heating shell; 311, heating inlet; 312, heating outlet; 32, heating member; 33, winding board; 34, wire; 35, heating wire fixing frame; 40, partition; 50, motor fixing frame; 60, shock absorbing pad; 70, flat pad; 80, screen; 90, heat insulation frame. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] As Figures 1 to 8As shown, the embodiment one of the present application provides a wind guide assembly, which comprises a wind guide 10, an axial flow fan 20 and a heating structure 30. The wind guide 10 has a flow pipe segment 11 and a tapered segment 12 which are communicated. The axial flow fan 20 is arranged in the flow pipe segment 11, and the axial flow fan 20 comprises a motor 21 and a fan blade 22. The motor 21 drives the fan blade 22 to rotate. The motor 21 is fixed in the flow pipe segment 11 by a motor fixing frame 50, so as to improve the setting stability of the motor 21. The heating structure 30 is arranged in the wind guide 10 or at the end of the tapered segment 12 away from the flow pipe segment 11, so as to heat the air blown out of the wind guide 10 by the heating structure 30. Specifically, when the heating structure 30 is arranged at the end of the tapered segment 12 away from the flow pipe segment 11, the heating structure 30 is located outside the wind guide 10, so as to reduce the damage of the heat radiation of the heating structure 30 to the wind guide 10, thereby protecting the wind guide 10. The end of the flow pipe segment 11 away from the tapered segment 12 forms an air inlet 13, and the end of the tapered segment 12 away from the flow pipe segment 11 forms an air outlet 14. The flow area of the tapered segment 12 gradually decreases along the direction from the air inlet 13 to the air outlet 14, so as to form a pressure boosting effect and improve the air outlet pressure at the air outlet 14. Specifically, the flow pipe segment 11 in the embodiment is a circular pipe or a square pipe structure.

[0031] By using the wind guide assembly provided in the embodiment, the wind guide assembly in the embodiment is used in a cooking appliance, which mainly comprises an air fryer or a cooking appliance with a baking function. Under the action of the axial flow fan 20, the air flows from the air inlet 13 to the air outlet 14. When the air passes through the tapered segment 12, the flow area of the tapered segment 12 gradually decreases along the direction from the air inlet 13 to the air outlet 14, so as to increase the air outlet pressure at the air outlet 14, so as to increase the air pressure of the hot air, thereby making the hot air better blow to the bottom of the pot body, so as to better cook the bottom layer of food, thereby improving the cooking effect of the cooking appliance. Therefore, by using the wind guide assembly provided in the embodiment, the technical problem of poor cooking effect of the cooking appliance in the prior art can be solved.

[0032] Specifically, the flow area of the air inlet 13 is greater than the flow area of the air outlet 14, so as to better improve the air outlet pressure at the air outlet 14.

[0033] In the embodiment, the flow pipe segment 11 is an equal cross-section structure, that is, the cross-sections at different heights of the flow pipe segment 11 are the same. By using such a structure, the structure is simple, and it is easy to produce and manufacture, and it is also easy to guide the air through the flow pipe segment 11. In addition, the equal cross-section structure also has enough space, so as to facilitate the installation of the axial flow fan 20 in the flow pipe segment 11. Specifically, the cross-section of the flow pipe segment 11 in the embodiment can be a circular pipe structure.

[0034] In the embodiment, the air outlet 14 is a rectangular port. Since the cross-sectional area of the heating part of the heating structure 30 is in a strip shape, the air outlet 14 in a rectangular port structure is adopted, so that the shape of the air outlet 14 is adapted to the shape of the heating part of the heating structure 30, so as to better blow hot air and improve the air blowing effect.

[0035] Specifically, the tapered section 12 in the embodiment is connected to one end of the flow pipe section 11 and is a circular port. With such a structure, the flow pipe section 11 and the tapered section 12 are adapted to each other, so that the air in the flow pipe section 11 flows smoothly into the tapered section 12 through the connecting port.

[0036] In the embodiment, the diameter of the connecting port is d, the air outlet is a rectangular port, and the width of the air outlet is b, where 2.5≤d / b≤3.5. When the value of d / b is too small, specifically when the value of d / b is less than 2.5, the width of the air outlet 14 and the diameter of the connecting port are not significantly different, and the tapering degree of the tapered section is relatively gentle, which is not conducive to effectively improving the air pressure at the air outlet. When the value of d / b is too large, specifically when the value of d / b is greater than 3.5, although the air pressure of the air outlet 14 is improved, the air outlet area of the air outlet 14 is greatly reduced, and the air at the air outlet 14 cannot cover the heating part inside the heating structure, thus not conducive to improving the heating effect. By setting the value of d / b in the above range, the air pressure can be effectively ensured, and the air outlet area can also be effectively ensured.

[0037] Specifically, the length of the flow pipe section 11 in the embodiment is H1, and the length of the tapered section 12 is H2, where 2≤H1 / H2≤3. When the ratio of H1 / H2 is too small, specifically when the ratio of H1 / H2 is less than 2, the length of the flow pipe section 11 is too small, which is not conducive to the guiding effect of the flow pipe section 11 on the air. When the ratio of H1 / H2 is too large, specifically when the ratio of H1 / H2 is greater than 3, the length of the flow pipe section 11 is too long, which increases the flow time of the air in the flow pipe section, and is not conducive to effectively improving the heating efficiency. By setting the ratio of H1 / H2 in the above range, the air can be guided, and the heating effect can be effectively improved. 2的 Specifically, the length of the flow pipe section 11 in the embodiment is H1, and the length of the tapered section 12 is H2, where 2≤H1 / H2≤3. When the ratio of H1 / H2 is too small, specifically when the ratio of H1 / H2 is less than 2, the length of the flow pipe section 11 is too small, which is not conducive to the guiding effect of the flow pipe section 11 on the air. When the ratio of H1 / H2 is too large, specifically when the ratio of H1 / H2 is greater than 3, the length of the flow pipe section 11 is too long, which increases the flow time of the air in the flow pipe section, and is not conducive to effectively improving the heating efficiency. By setting the ratio of H1 / H2 in the above range, the air can be guided, and the heating effect can be effectively improved.

[0038] In the embodiment, the tapering angle of the tapering section 12 is α, and 35°≤α≤50°. When the tapering angle α is too small, specifically when α is less than 35°, although the supercharging effect is improved, the air outlet shape of the air outlet 14 is similar to a long strip, which is not conducive to the connection between the air outlet 14 and the heating structure 30, and is not conducive to improving the heating effect. When the tapering angle α is too large, specifically when α is greater than 50°, although the shape of the air outlet is ensured, the tapering degree of the tapering section 12 is small, which is not conducive to effectively increasing the air pressure at the air outlet 14, and thus is not conducive to improving the heating effect. By setting the tapering angle α in the above range, the air outlet 14 can have a reasonable air outlet area and shape, and the heating effect can be effectively improved.

[0039] In the embodiment, the heating structure 30 includes a heating shell 31 and a heating element 32, the heating element 32 is arranged in the heating shell 31, the heating shell 31 is arranged at one end of the tapering section 12 away from the flow-through pipe section 11, and the heating shell 31 communicates with the tapering section 12. By adopting such a structure, after the air is supercharged by the tapering section 12, the air flows into the heating shell 31, and is heated by the heating element 32 in the heating shell 31 and then flows out. In this way, on the one hand, the air pressure of the hot air can be ensured, and on the other hand, the air can be effectively heated, and the heat loss is reduced. By arranging the heating shell 31, the heating effect of the heating element 32 can be concentrated, and the damage to the structure of the air guide piece 10 caused by excessive heat radiation when the heating element 32 is arranged in the air guide piece 10 is avoided.

[0040] Specifically, the heating element 32 in the embodiment is a heating wire, the heating wire is wound on a winding plate 33, and the winding plate 33 is a strip-shaped plate structure. Preferably, the shapes of the heating inlet 311 and the heating outlet 312 are adapted to the shape of the winding plate 33. The heating wire is connected to an external power supply through a wire 34, and a heating wire fixing frame 35 is used to fix the heating element 32 and the winding plate 33.

[0041] Specifically, the heating shell 31 in the embodiment has a heating inlet 311 and a heating outlet 312, the heating inlet 311 is communicated with the air outlet 14, and the heating outlet 312 is located at the side of the heating shell 31. Both the heating inlet 311 and the heating outlet 312 are rectangular ports. With such a structure, after the air enters the heating shell 31 through the heating inlet 311, the air is heated by the heating element 32 inside the heating shell 31 to form hot air, and the hot air is discharged through the heating outlet 312 located at the side of the heating shell 31 to heat the food in the pot. Since the heating element 32 is generally in a strip shape, by setting the heating inlet 311 and the heating outlet 312 as rectangular ports, the heating inlet 311 and the heating outlet 312 can be matched with the shape of the heating element 32, so that the air entering through the heating inlet 311 can be uniformly blown to the heating element 32, and the air heated by the heating element 32 can be uniformly blown to the heating outlet 312, so as to facilitate the smooth blowing of the hot air, thereby improving the cooking effect.

[0042] In order to better improve the hot air outlet effect of the heating outlet 312, the heating element 32 in the embodiment is arranged opposite to the heating outlet 312. With such a structure, the air heated by the heating element 32 can be smoothly discharged from the heating outlet 312, avoiding heat dissipation and ensuring the cooking effect of the food. It should be noted that the "heating element 32 is arranged opposite to the heating outlet 312" in the embodiment can mean that "all the heating element 32 is arranged opposite to the heating outlet 312", or that "part of the heating element 32 is arranged opposite to the heating outlet 312".

[0043] In the embodiment, the air guide assembly further comprises a heat insulation frame 90 made of heat insulation material, and the heat insulation frame 90 is arranged outside the heating structure 30. Preferably, the heat insulation frame 90 in the embodiment is arranged outside the heating shell 31. With such a structure, the heat dissipation of the heating shell 31 can be reduced by the heat insulation frame 90, and the heat utilization efficiency is improved.

[0044] Specifically, the air guide assembly in the embodiment further comprises a partition 40 arranged in the tapered section 12, and the partition 40 extends in the direction from the axial flow fan 20 to the air outlet 14. Due to the characteristics of the axial flow fan 20 itself, the air in the air guide piece 10 blows along the circumferential direction of the air guide piece 10, and the air volume in the middle of the air guide piece 10 is extremely small. By arranging the partition 40, the air at the tapered section 12 can be disturbed. Specifically, the partition 40 is arranged in the tapered section 12, that is, the partition 40 is connected with the inner wall of the tapered section 12 and divides the air outlet 14 into at least two flow-through sections by the partition 40, so that the air in each flow-through section flows along the circumferential direction of the flow-through section under the action of the axial flow fan 20, thereby increasing the air volume at the middle region of the air outlet 14 and improving the uniformity of the air outlet to a certain extent. Specifically, the partition 40 can extend along the length direction of the rectangular air outlet 14, or the partition 40 can extend along the width direction of the rectangular air outlet 14.

[0045] The air guide assembly in the embodiment further comprises a damping pad 60, a flat pad 70 and a screen 80, and the damping pad 60 and the flat pad 70 are arranged at the motor fixing frame 50. The damping pad 60 can effectively play a damping role, reduce the influence of the movement of the axial flow fan 20 on the air guide piece 10, and improve the setting stability of the air guide barrel. The screen 80 is arranged at the heating outlet 312 to improve the uniformity of the air outlet.

[0046] Embodiment two of the present application provides a cooking utensil, which comprises an air guide assembly provided in embodiment one. The cooking utensil comprises an air fryer or an electric rice cooker or an electric pressure cooker or a multifunctional heating pot with baking, cooking and making dishes.

[0047] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: the air pressure of the air outlet is improved, the hot air can smoothly enter the bottom of the pot body, the upper and lower layers of the food can be heated, the defect of the food at the bottom being undercooked is improved, and the cooking effect is improved.

[0048] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] The foregoing description, for purposes of clarity, describes the present application in terms of its components, processes and operations. Such descriptions and representations are the means used by those skilled in the art of describing the physical structure, configuration and operation of implementations of the application in the best mode contemplated for carrying out the application. However, the application should not be construed as limited to the descriptions and representations used because the purposed described herein can be produced by other equally effective components, processes, acts, structures, functionality, objects, or utilities. The present application is to be measured only in accordance with the claims as set forth and the full scope of equivalents thereof. All examples and conditional language recited herein are intended to be included within the scope of the present application and to be used only in the sense as used in obtaining the benefits provided by the present application. Additionally, it is intended that the present application not be limited to the specific examples and / or methods described herein, but that the present application include all implementations that fall within the scope of the present application.

[0050] In the description of the present application, it is to be understood that the specific location or position relationships indicated by the orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0051] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0052] In addition, it should be noted that the use of the words "first", "second" and the like to describe various components is merely intended to distinguish the corresponding components, and unless otherwise stated, the above words have no special meaning, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0053] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An air deflector assembly comprising: The application relates to a cooking utensil comprising: an air guide (10) having an air inlet (13) and an air outlet (14); an axial flow fan (20) arranged in the air guide (10); a heating structure (30) arranged above the air outlet (14); wherein the air guide (10) has a flow passage section (11) and a tapered section (12) arranged in communication, the air inlet (13) is located at one end of the flow passage section (11) away from the tapered section (12), the air outlet (14) is located at one end of the tapered section (12) away from the flow passage section (11), and the flow area of the tapered section (12) gradually decreases in the direction from the air inlet (13) to the air outlet (14); the heating structure (30) comprises a heating shell (31) and a heating element (32), the heating element (32) is arranged in the heating shell (31), the heating shell (31) is arranged at one end of the tapered section (12) away from the flow passage section (11), and the heating shell (31) is in communication with the tapered section (12); the flow area of the air inlet (13) is greater than that of the air outlet (14); the flow passage section (11) is of an equal cross-section structure.

2. The air deflector assembly of claim 1, wherein, the air outlet (14) is a rectangular port.

3. The air deflector assembly of claim 1, wherein, one end of the tapered section (12) close to the flow passage section (11) is a communication port, and the communication port is a circular port.

4. The air deflector assembly of claim 3, wherein, the diameter of the communication port is d, the air outlet (14) is a rectangular port, and the width of the air outlet (14) is b, wherein 2.5<=d / b<=3.

5.

5. The air deflector assembly of claim 1, wherein, the length of the flow passage section (11) is H1, and the length of the tapered section (12) is H2, wherein 2<=H1 / H2<=3.

6. The air deflector assembly of claim 1, wherein, the gradient angle of the tapered section (12) is alpha, and 35<=alpha<=50.

7. The air deflector assembly of claim 1, wherein, the heating shell (31) has a heating inlet (311) and a heating outlet (312), the heating inlet (311) is in communication with the air outlet (14), the heating outlet (312) is located at the side of the heating shell (31), the heating inlet (311) and the heating outlet (312) are both rectangular ports, and the heating element (32) is arranged opposite to the heating outlet (312).

8. The air deflector assembly of claim 1, wherein, The air guide assembly further comprises: a heat insulation frame (90) arranged outside the heating structure (30).

9. The air deflector assembly of claim 1, wherein, The air guide assembly further comprises: a partition (40) arranged in the tapered section (12), and the partition (40) extends in the direction from the axial flow fan (20) to the air outlet (14).

10. A cooking appliance characterized by, The cooking utensil comprises the air guide assembly, and the air guide assembly is the air guide assembly according to any one of claims 1-9.

Citation Information

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