Smoke inlet assembly and range hood

Abstract

The utility model provides a kind of smoke inlet assembly and range hood, it is related to kitchen appliance technical field, smoke inlet assembly includes smoke inlet passage and first oil collecting part;The inner wall of the smoke inlet passage is equipped with flow guide groove;The first oil collecting part is arranged in the bottom of the flow guide groove, the flow guide groove can guide flow to the first oil collecting part with oil dirt.When oil fume flows through smoke inlet passage, oil dirt can flow along flow guide groove under the action of centrifugal force, after oil dirt flows along flow guide groove to the bottom of flow guide groove, oil dirt continues to flow into first oil collecting part downwards, so that oil dirt is collected in first oil collecting part.The utility model provides smoke inlet assembly, oil dirt on the inner wall of smoke inlet passage can flow to first oil collecting part along flow guide groove under the action of centrifugal force, can prevent the accumulation of oil dirt on the inner wall of smoke inlet passage, prevent the occurrence of dripping phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a smoke intake component and a range hood. Background Technology

[0002] A range hood is an electrical appliance specifically designed to purify the kitchen environment. Its core function is to absorb and filter the fumes, odors, and heat generated during cooking through a mechanical power system, in order to maintain clean air in the kitchen.

[0003] Range hoods are equipped with a smoke inlet channel. After the fumes flow through the smoke inlet channel, they are discharged to the outside through an external pipe. When the fumes flow in the smoke inlet channel, turbulence is easily generated. Some oil droplets are carried back into the exhaust system by the airflow, causing oil stains to accumulate on the inner wall of the smoke inlet channel and even causing leakage. Utility Model Content

[0004] The purpose of this invention is to provide a smoke inlet assembly to solve the technical problem that oil stains easily accumulate on the inner wall of the smoke inlet channel in the prior art.

[0005] The smoke inlet assembly provided by this utility model includes a smoke inlet channel and a first oil collection component; The inner wall of the smoke inlet channel is provided with a guide groove; The first oil collecting element is disposed at the bottom of the guide channel, and the guide channel can guide the oil sludge to the first oil collecting element.

[0006] Furthermore, the smoke inlet assembly also includes a first flow guide; The first guide member covers the inner wall of the smoke inlet channel, and the guide groove is disposed on the inner wall of the first guide member; The first oil collecting component is located at the bottom of the first flow guide component.

[0007] Furthermore, the first guide member is detachably connected to the inner wall of the smoke inlet channel.

[0008] Furthermore, the first oil collecting component is detachably connected to the first flow guiding component.

[0009] Furthermore, the guide groove is spiral-shaped.

[0010] Furthermore, the smoke inlet assembly also includes an external pipe, a second flow guide, and a filter screen; One end of the external pipe is located inside the smoke inlet channel, and the other end of the external pipe is used to extend to the outside of the range hood; The second flow guide is disposed at one end of the external pipe; the second flow guide is a hollow structure; the outer contour of the second flow guide is tapered, and the diameter of the second flow guide gradually decreases from the top to the bottom along the axial direction of the second flow guide; the side of the second flow guide is provided with a plurality of flow guide holes, and the plurality of flow guide holes are spaced apart along the circumference of the second flow guide. The outer contour of the filter screen is conical, and the filter screen is sleeved on the outside of the second guide member.

[0011] Furthermore, the smoke inlet assembly also includes a second oil collection component; the second oil collection component is detachably connected to the bottom of the filter screen.

[0012] Furthermore, the smoke inlet assembly also includes multiple guide vane mechanisms; Multiple guide vane mechanisms are arranged around the outside of the filter screen, and the multiple guide vane mechanisms are spaced apart along the circumference of the filter screen; Each of the guide vane mechanisms includes a drive component and a guide vane; the drive component is connected to the inner wall of the external pipe; the drive component is connected to the guide vane, and the drive component can drive the guide vane to rotate around the axis of the guide vane; the axis of the guide vane is inclined to the vertical direction, and the bottom end of the axis of the guide vane is inclined towards the inside of the filter screen.

[0013] Furthermore, the guide vane mechanism also includes a first gear and a second gear; The drive component is connected to the guide vane via a shaft, and the first gear is sleeved on the shaft. The second gear is fixedly connected to the inner wall of the external pipe, and the first gear meshes with the second gear.

[0014] The purpose of this utility model is also to provide a range hood, including the smoke inlet component provided by this utility model.

[0015] The smoke inlet assembly provided by this utility model includes a smoke inlet channel and a first oil collection component. The inner wall of the smoke inlet channel is provided with a guide groove. The first oil collection component is disposed at the bottom of the guide groove, and the guide groove can guide oil to the first oil collection component. When the oily smoke flows through the smoke inlet channel, the oil can flow along the guide groove under the action of centrifugal force. After flowing to the bottom of the guide groove, the oil continues to flow downwards into the first oil collection component, thereby collecting the oil in the first oil collection component. The smoke inlet assembly provided by this utility model allows oil on the inner wall of the smoke inlet channel to flow along the guide groove to the first oil collection component under the action of centrifugal force, preventing oil accumulation on the inner wall of the smoke inlet channel and preventing leakage. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the smoke inlet assembly provided in this embodiment of the utility model; Figure 2 This is a bottom view of the smoke inlet assembly provided in this embodiment of the utility model; Figure 3 This is a cross-sectional view of the smoke inlet assembly provided in an embodiment of this utility model; Figure 4 This is a partial cross-sectional view of the second flow guide and filter screen of the smoke inlet assembly provided in this embodiment of the utility model; Figure 5 yes Figure 4 A magnified view of a portion at point A; Figure 6 This is a schematic diagram of the structure of the second guide element and filter screen of the smoke inlet assembly provided in this embodiment of the utility model.

[0018] Icons: 1-Range hood; 11-External duct; 111-Conical body; 112-Duct body; 12-Axial motor; 13-Axial fan blade; 2-First guide component; 21-First oil collection component; 22-Connecting part; 3-Second gear; 31-Limiting disc; 4-Rotating motor; 41-Shaft; 42-Guide blade; 43-First gear; 5-Second guide component; 6-Filter screen; 61-Female threaded connector; 7-Second oil collection component; 71-Female threaded connector; 8-Smoke inlet channel. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] This utility model provides a smoke inlet assembly and a range hood. Several embodiments are given below to describe the smoke inlet assembly and range hood provided by this utility model in detail.

[0021] Example 1 The smoke inlet assembly provided in this embodiment, such as Figures 1 to 6As shown, it includes a smoke inlet channel 8 and a first oil collection component 21; the inner wall of the smoke inlet channel 8 is provided with a guide groove; the first oil collection component 21 is located at the bottom of the guide groove, and the guide groove can guide the oil to the first oil collection component 21.

[0022] When the oily fume airflow passes through the smoke inlet channel 8, the oil can flow along the guide channel under the action of centrifugal force. After the oil flows along the guide channel to the bottom of the guide channel, the oil continues to flow downward into the first oil collection component 21, so that the oil is collected in the first oil collection component 21.

[0023] The smoke inlet assembly provided in this embodiment allows oil stains on the inner wall of the smoke inlet channel 8 to flow along the guide groove to the first oil collection component 21 under the action of centrifugal force, which can prevent oil stains from accumulating on the inner wall of the smoke inlet channel 8 and prevent leakage.

[0024] The guide channel can be directly set on the inner wall of the smoke inlet channel 8, or it can be indirectly set on the inner wall of the smoke inlet channel 8 through the first guide member 2.

[0025] Furthermore, the smoke inlet assembly also includes a first guide member 2; the first guide member 2 covers the inner wall of the smoke inlet channel 8, and a guide groove is disposed on the inner wall of the first guide member 2; the first oil collecting member 21 is disposed at the bottom of the first guide member 2.

[0026] The first guide member 2 matches the shape of the inner wall of the smoke inlet channel 8, the first guide member 2 is in contact with the inner wall of the smoke inlet channel 8, and the first guide member 2 is fixed to the inner wall of the smoke inlet channel 8, so that the first guide member 2 covers the inner wall of the smoke inlet channel 8. In this embodiment, the inner wall of the smoke inlet channel 8 is hemispherical, and both the outer and inner walls of the first guide member 2 are hemispherical, with the outer wall of the first guide member 2 in contact with the inner wall of the smoke inlet channel 8.

[0027] The first guide member 2 covers the inner wall of the smoke inlet channel 8, and a guide groove is provided on the inner wall of the first guide member 2, so that the guide groove is indirectly provided on the inner wall of the smoke inlet channel 8 through the first guide member 2.

[0028] When the oily fume airflow passes through the first guide member 2, the oil is able to flow along the guide channel under the action of centrifugal force. After the oil flows to the bottom of the guide channel, it continues to flow downward into the first oil collecting member 21, thus collecting the oil in the first oil collecting member 21. This prevents the accumulation of oil on the inner wall of the first guide member 2, thereby preventing the accumulation of oil on the inner wall of the smoke inlet channel 8 and preventing leakage.

[0029] The bottom of the first guide member 2 is fixedly installed with a first oil collection member 21. The oil sludge flowing along the guide channel can flow from the bottom of the guide channel to the first oil collection member 21. The first oil collection member 21 is used to collect the oil sludge separated by the first guide member 2.

[0030] The first oil collection component 21 can be cup-shaped or trough-shaped, etc.

[0031] The first guide member 2 can be fixedly connected to the inner wall of the smoke inlet channel 8. The connection method can be any suitable method such as welding or bonding, so that the first guide member 2 is firmly connected to the inner wall of the smoke inlet channel 8.

[0032] Furthermore, the first guide member 2 is detachably connected to the inner wall of the smoke inlet channel 8.

[0033] The first guide member 2 is detachably connected to the inner wall of the smoke inlet channel 8. The connection method can be any suitable method such as threaded connection or snap-fit, so that the first guide member 2 and the inner wall of the smoke inlet channel 8 can be easily disassembled and assembled.

[0034] For example, the bottom of the first guide member 2 is provided with a connecting part 22, which is annular and has a threaded structure on its outer wall. This threaded structure is threadedly connected to the inner wall of the smoke inlet channel 8, so that the first guide member 2 is tightly connected to the inner wall of the smoke inlet channel 8 through the threaded structure on the outer wall of the connecting part 22.

[0035] The first oil collection component 21 can be fixedly connected to the bottom of the smoke inlet channel 8.

[0036] The first oil collecting component 21 can also be connected to the connecting part 22. The first oil collecting component 21 can be an annular groove. The annular groove is located below the first guide component 2, and the projection of the bottom end of the guide groove in the vertical direction is the first projection. The first projection can fall within the range of the first annular groove, so that the oil flowing out of the guide groove can fall into the first oil collecting component 21.

[0037] The first oil collecting component 21 can be fixedly connected to the bottom of the first flow guide 2. For example, the first oil collecting component 21 can be connected to the bottom wall of the connecting part 22. The connection method can be welding or bonding, so that the first flow guide 2 and the first oil collecting component 21 can be firmly connected.

[0038] Furthermore, the first oil collecting component 21 and the first flow guide component 2 are detachably connected, and the connection method can be threaded connection or snap-fit, so that the first oil collecting component 21 and the first flow guide component 2 are easy to disassemble and assemble. Users can easily disassemble the first oil collecting component 21, so as to clean and maintain the first oil collecting component 21 in a timely manner.

[0039] The number of guide channels can be multiple, and the multiple guide channels are arranged at intervals along the circumference of the inner wall of the smoke inlet channel 8. Preferably, the multiple guide channels are evenly spaced along the circumference of the inner wall of the smoke inlet channel 8.

[0040] The guide channel extends from the top to the bottom of the inner wall of the smoke inlet channel 8. The shape of the guide channel can be straight, curved, or any other suitable shape, as long as the oil can flow from the top to the bottom of the guide channel under the action of centrifugal force.

[0041] Furthermore, the guide channel is spiral-shaped.

[0042] Specifically, the guide channel is spirally arranged on the inner wall of the first guide member 2 around the axis of the smoke inlet channel 8. This shape allows the oil to flow more smoothly along the guide channel.

[0043] Furthermore, the smoke inlet assembly also includes an external pipe 11, a second guide member 5, and a filter screen 6; one end of the external pipe 11 is disposed in the smoke inlet channel 8, and the other end of the external pipe 11 is used to extend to the outside of the range hood 1; the second guide member 5 is disposed at one end of the external pipe 11; the second guide member 5 has a hollow structure; the outer contour of the second guide member 5 is conical, and the diameter of the second guide member 5 gradually decreases from the top to the bottom along the axial direction of the second guide member 5; the side of the second guide member 5 is provided with multiple guide holes, and the multiple guide holes are spaced apart along the circumference of the second guide member 5; the outer contour of the filter screen 6 is conical, and the filter screen 6 is sleeved on the outside of the second guide member 5.

[0044] The external duct 11 includes a conical body 111 and a duct body 112 connected to each other. The conical body 111 is one end of the external duct 11 and is disposed within the smoke inlet channel 8, with the conical body 111 spaced apart from the smoke inlet channel 8. The duct body 112 passes through the top of the smoke inlet channel 8 and extends to the outside of the range hood 1. The end of the duct body 112 away from the conical body 111 is the other end of the external duct 11, and the end of the duct body 112 away from the conical body 111 extends to the outside of the range hood 1. An axial flow fan mechanism is embedded in the duct body 112. The axial flow fan mechanism includes an axial flow motor 12 and axial flow fan blades 13 driven by the axial flow motor 12. The axial flow fan mechanism is responsible for generating negative pressure to extract the fumes generated during cooking.

[0045] The outer contour of the second guide member 5 is conical. The second guide member 5 is located at one end of the external pipe 11, that is, at the end of the external pipe 11 located inside the smoke inlet channel 8. Specifically, the bottom of the cone 111 has an opening, and the top of the second guide member 5 extends into the cone 111 through the opening. Most of the area of ​​the second guide member 5 is located below the cone 111; or the top edge of the second guide member 5 is flush with the bottom opening edge of the cone 111, and the remaining area of ​​the second guide member 5 is located below the cone 111. The second guide member 5 is coaxially arranged with the cone 111, coaxially arranged with the filter screen 6, and coaxially arranged with the smoke inlet channel 8.

[0046] The second guide element 5 is fixedly or detachably connected to the inner wall of the external duct to securely install the second guide element 5 at one end of the external duct 11. For example, the second guide element 5 is snapped or welded to the inner wall of the cone 111. The second guide element 5 can optimize the airflow direction and reduce turbulence, thereby optimizing the performance of the range hood 1.

[0047] Multiple guide holes can be evenly spaced along the circumference of the second guide member 5. The extension direction of the guide holes can be parallel to or inclined to the generatrix of the side of the second guide member 5. The shape of the guide holes can be straight, curved, or any other suitable shape.

[0048] The filter screen 6 is fitted onto the outside of the second guide member 5, with the filter screen 6 spaced apart from the second guide member 5. The filter screen 6 can be fixedly connected to or detachably connected to the inner wall of the external pipe. For example, the filter screen 6 can be snapped or welded to the inner wall of the cone-shaped body 111. The filter screen 6 can also be fixedly connected to or detachably connected to the second guide member 5, so that the filter screen 6 is fixedly installed on the outside of the second guide member 5. The filter screen 6 can filter and separate oil and grease. After being filtered by the filter screen 6, the oil fumes flow to the second guide member 5.

[0049] Furthermore, the smoke inlet assembly also includes a second oil collection component 7; the second oil collection component 7 is detachably connected to the bottom of the filter screen 6.

[0050] The bottom of the filter screen 6 is detachably connected to the second oil collection component 7. The connection method can be threaded connection or snap-fit, which facilitates the disassembly and assembly of the second oil collection component 7 and makes it easy to clean and maintain the second oil collection component 7 in a timely manner.

[0051] For example, the bottom of the filter screen 6 is provided with a female threaded connector 61, and the second oil collecting part 7 is provided with a male threaded connector 71. The female threaded connector 61 and the male threaded connector 71 are threadedly connected.

[0052] Specifically, the vertical projection of the bottom end of the filter screen 6 is the second projection, which falls within the range of the second oil collecting component 7, so that the oil flowing down from the bottom of the filter screen 6 can fall into the second oil collecting component 7. The second oil collecting component 7 can be any suitable shape, such as a trough or a cup. The second oil collecting component 7 includes a bottom wall, and a threaded connector 71 is threadedly fixedly connected to the center of the bottom wall and protrudes from the top of the second oil collecting component 7.

[0053] The surface of filter screen 6 is coated with an oleophobic coating, which facilitates the smooth flow of oil into the second oil collection component 7. Through the guiding effect of the second guide component 5 and the filtering effect of filter screen 6, the oil collection efficiency is improved.

[0054] Furthermore, the smoke inlet assembly also includes multiple guide vane mechanisms; the multiple guide vane mechanisms surround the outside of the filter screen 6, and the multiple guide vane mechanisms are spaced apart along the circumference of the filter screen 6; each guide vane mechanism includes a drive member and a guide vane 42; the drive member is connected to the inner wall of the external pipe 11; the drive member is connected to the guide vane 42, and the drive member can drive the guide vane 42 to rotate around the axis of the guide vane 42; the axis of the guide vane 42 is inclined to the vertical direction, and the bottom end of the axis of the guide vane 42 is inclined towards the inside of the filter screen 6.

[0055] Multiple guide vane mechanisms can be evenly spaced along the circumference of the filter screen 6. The guide vanes 42 of each of the multiple guide vane mechanisms are spaced apart from the filter screen 6. In this embodiment, the driving component is a rotary motor 4, which is fixedly connected to the inner wall of the cone-shaped body 111 via a bracket.

[0056] The output shaft of the drive unit drives the guide vane 42 to rotate around its axis. When the guide vane 42 rotates, it guides the oil fumes to form a spiral airflow, which helps to further optimize the oil fume separation effect. By guiding the oil fumes to form a spiral airflow through the guide vane mechanism, the second guide component 5 optimizes the airflow direction and reduces turbulence, and the filter screen 6 filters the oil, enabling the oil to be collected in the second oil collecting component 7, which can efficiently separate the oil and improve the oil collection efficiency.

[0057] The axis of the guide vane 42 is inclined to the vertical direction. The axis of the guide vane 42 can be parallel to the generatrix of the conical surface of the second guide member 5, or it can be inclined to the generatrix of the conical surface of the second guide member 5. Figure 4 As shown, the bottom end of the axis of the guide vane 42 is inclined toward the inside of the filter screen 6, that is, along the horizontal direction, the bottom end of the axis of the guide vane 42 is located on the side of the top end of the axis of the guide vane 42 facing the inside of the filter screen 6.

[0058] Furthermore, the guide vane mechanism also includes a first gear 43 and a second gear 3; the drive unit is connected to the guide vane 42 via a shaft 41, and the first gear 43 is sleeved on the shaft 41; the second gear 3 is fixedly connected to the inner wall of the external pipe 11, and the first gear 43 meshes with the second gear 3.

[0059] The output shaft of the drive unit is fixedly connected to the rotating shaft of the guide vane 42 via the shaft body 41. The drive unit can drive the guide vane 42 to rotate around the axis of the rotating shaft. The axis of the rotating shaft of the guide vane 42 is also the axis of the guide vane 42. The guide vane 42 is an arc-shaped blade. When the guide vane 42 rotates around its axis, it can guide the oil fumes to form a spiral airflow, which helps to improve the oil fume separation effect.

[0060] The first gear 43 is fixedly sleeved on the shaft 41. When the guide vane 42 rotates around the axis of the guide vane 42, the first gear 43 rotates around the axis of the shaft 41, and the first gear 43 meshes with the second gear 3, thereby ensuring the stability of the rotation of the guide vane 42.

[0061] The limiting disk 31 is fixedly connected to the inner wall of the cone 111, and the second gear 3 is fixedly connected to the limiting disk 31 to better limit the position of the second gear 3, thereby improving the stability of the rotation of the guide vane 42.

[0062] In this embodiment, both the first gear 43 and the second gear 3 are bevel gears.

[0063] Under the action of the first guide member 2, the second guide member 5, and the guide vane mechanism, the first guide member 2 enables the oil stains on the inner wall of the smoke inlet channel 8 to flow through the guide groove to the first oil collection member 21. The second guide member 5 can optimize the airflow direction and reduce turbulence. The oil fumes blown towards the external pipe 11 can be collected in the second oil collection member 7 under the action of the filter screen 6. The guide vane mechanism can guide the oil fumes to form a spiral airflow, which helps to improve the oil fume separation effect. Thus, the smoke inlet assembly can achieve efficient separation and collection of oil stains, and improve the oil collection efficiency.

[0064] Example 2 The range hood 1 provided in this embodiment includes the smoke inlet assembly provided in embodiment 1. When the oily smoke airflow passes through the smoke inlet channel 8, the oil can flow along the guide channel under the action of centrifugal force. After the oil flows along the guide channel to the bottom of the guide channel, the oil continues to flow downward into the first oil collection component 21, so that the oil is collected in the first oil collection component 21.

[0065] The range hood 1 provided in this embodiment allows grease on the inner wall of the smoke inlet channel 8 to flow along the guide groove to the first oil collection component 21 under the action of centrifugal force, preventing grease buildup on the inner wall of the smoke inlet channel 8 and preventing dripping. The range hood 1 has a compact structure and reasonable design, achieving efficient separation and collection of grease through the action of the first guide component 2, the second guide component 5, the filter screen 6, and the guide vane mechanism, thus improving grease collection efficiency.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A smoke inlet assembly, characterized in that, Including the smoke inlet channel (8) and the first oil collection component (21); The inner wall of the smoke inlet channel (8) is provided with a guide groove; The first oil collecting element (21) is disposed at the bottom of the guide channel, and the guide channel can guide the oil sludge to the first oil collecting element (21).

2. The smoke inlet assembly according to claim 1, characterized in that, The smoke inlet assembly also includes a first guide element (2); The first guide member (2) covers the inner wall of the smoke inlet channel (8), and the guide groove is disposed on the inner wall of the first guide member (2); The first oil collecting component (21) is located at the bottom of the first guide component (2).

3. The smoke inlet assembly according to claim 2, characterized in that, The first guide (2) is detachably connected to the inner wall of the smoke inlet channel (8).

4. The smoke inlet assembly according to claim 2, characterized in that, The first oil collecting component (21) is detachably connected to the first flow guide component (2).

5. The smoke inlet assembly according to claim 1, characterized in that, The flow channel is spiral-shaped.

6. The smoke inlet assembly according to any one of claims 1-5, characterized in that, The smoke inlet assembly also includes an external pipe (11), a second flow guide (5), and a filter (6). One end of the external pipe (11) is located inside the smoke inlet channel (8), and the other end of the external pipe (11) is used to extend to the outside of the range hood (1); The second guide (5) is disposed at one end of the external pipe (11); the second guide (5) is a hollow structure; the outer contour of the second guide (5) is tapered, and the diameter of the second guide (5) gradually decreases from the top to the bottom along the axial direction of the second guide (5); the side of the second guide (5) is provided with a plurality of guide holes, and the plurality of guide holes are arranged at intervals along the circumference of the second guide (5); The outer contour of the filter (6) is conical, and the filter (6) is sleeved on the outside of the second guide member (5).

7. The smoke inlet assembly according to claim 6, characterized in that, The smoke inlet assembly also includes a second oil collection component (7); the second oil collection component (7) is detachably connected to the bottom of the filter screen (6).

8. The smoke inlet assembly according to claim 6, characterized in that, The smoke inlet assembly also includes multiple guide vane mechanisms; Multiple guide vane mechanisms are arranged around the outside of the filter screen (6), and the multiple guide vane mechanisms are arranged at circumferential intervals along the filter screen (6); Each of the aforementioned guide vane mechanisms includes a drive element and a guide vane (42). The driving component is connected to the inner wall of the external pipe (11); the driving component is connected to the guide vane (42), and the driving component can drive the guide vane (42) to rotate around the axis of the guide vane (42); the axis of the guide vane (42) is inclined to the vertical direction, and the bottom end of the axis of the guide vane (42) is inclined towards the inside of the filter screen (6).

9. The smoke inlet assembly according to claim 8, characterized in that, The guide vane mechanism also includes a first gear (43) and a second gear; The drive unit is connected to the guide vane (42) via a shaft (41), and the first gear (43) is sleeved on the shaft (41); The second gear is fixedly connected to the inner wall of the external pipe (11), and the first gear (43) meshes with the second gear.

10. A range hood, characterized in that, Includes the smoke inlet assembly as described in any one of claims 1-9.

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