A multi-baffle linkage control method of a range hood

Abstract

The present application belongs to the technical field of range hood, and discloses a range hood multi-baffle linkage control method, which comprises a driving device installed on a range hood shell and a baffle assembly rotationally connected to the top of the opening side of the range hood shell. The baffle assembly comprises a first baffle and a second baffle. The range hood multi-baffle linkage control method comprises: when the range hood is in a non-working state, the first baffle and the second baffle are coplanar to cover the opening side of the range hood shell, so as to reduce the occupied space of the range hood and protect the internal structure of the range hood shell; when the range hood is in a working state, the driving device drives the first baffle and the second baffle to flip away from the range hood shell at the same time, linkage synchronous flip opens the first baffle and the second baffle, expands the smoke gathering space, has better smoke blocking effect, and can also reduce the obstruction to the user's line of sight. There is no motion interference between the first baffle and the second baffle, the oil fume suction port formed by the range hood is closer to the smoke emitting area, and has better smoke suction effect.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a multi-baffle linkage control method for a range hood. Background Technology

[0002] Range hoods are widely used appliances in kitchens. They are usually equipped with an upper baffle that can be flipped outward to gather and block cooking fumes. However, most range hoods on the market currently have a large, one-piece flat upper baffle. When the outward angle is too large, it will seriously obstruct the user's view, causing inconvenience. In addition, an excessively large opening will reduce the suction power and affect the smoke extraction effect. If the outward angle is too small, the smoke collection area will be too small, resulting in a poor smoke collection effect and affecting the smoke extraction performance of the range hood. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-baffle linkage control method for range hoods, which can effectively solve the problems of baffles turning outward and obstructing the user's view, as well as the problem of the oil fume inlet being far from the smoke-generating area and the poor smoke extraction effect.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A multi-baffle linkage control method for a range hood is provided. The range hood includes a drive device installed on the range hood housing and a baffle assembly rotatably connected to the top of the opening side of the range hood housing. The baffle assembly includes a first baffle and a second baffle. The multi-baffle linkage control method for the range hood includes:

[0006] When the range hood is not in operation, the first baffle and the second baffle are coplanar and cover the opening side of the range hood housing;

[0007] When the range hood is in operation, the driving device drives the first baffle and the second baffle to flip simultaneously away from the range hood housing.

[0008] As a preferred embodiment of the present invention, the baffle assembly further includes a third baffle, which is rotatably connected to the bottom of the opening side of the range hood housing; the multi-baffle linkage control method for the range hood includes:

[0009] When the range hood is not in operation, the third baffle is abutted against the inner side of the first baffle and the second baffle;

[0010] When the range hood is in operation, the driving device drives the first baffle, the second baffle, and the third baffle to flip simultaneously in a direction away from the range hood housing.

[0011] As a preferred embodiment of the present invention, the range hood further includes a multi-link assembly, and the multi-baffle linkage control method of the range hood includes:

[0012] When the range hood is in operation, the drive device drives the multi-bar assembly to synchronously rotate the first baffle, the second baffle, and the third baffle.

[0013] As a preferred embodiment of the present invention, the multi-link assembly includes a movable frame, a main push rod, and a linkage rod group, wherein the movable frame is pulsatorically connected to the linkage rod group; the multi-baffle linkage control method for the smoke hood includes:

[0014] When the smoke hood is in operation, the driving device pushes the moving frame to move linearly, and the first end and the second end of the main push rod respectively push the first baffle and the third baffle to flip outward, and the second baffle flips outward through the linkage rod group.

[0015] As a preferred embodiment of the present invention, the movable frame is provided with a first sliding groove and a second sliding groove; the first end of the first rotating rod is rotatably connected to the movable frame, and the second end is slidably connected to the first sliding groove; the first end and the second end of the second rotating rod are respectively movably connected to the second end of the first rotating rod and the second sliding groove; the linkage rod group is rotatably connected to the second end of the second rotating rod through a first connecting rod; the multi-baffle linkage control method for the range hood includes:

[0016] When the range hood is in operation, the second end of the first rotating rod moves from position A of the first sliding groove to position B, and the second end of the second rotating rod moves from position C of the second sliding groove to position D. The linkage rod group cooperates with the first connecting rod to drive the second baffle to flip relative to the first baffle.

[0017] As a preferred embodiment of the present invention, the linkage assembly includes a second connecting rod, a third connecting rod, a first connecting frame, a second connecting frame, and a first and second crank rod rotatably connected. The first connecting frame and the second connecting frame are respectively connected to the inner walls of the first baffle and the second baffle. The end of the first connecting rod away from the second rotating rod is movably connected to the second connecting rod and the first crank rod. The multi-baffle linkage control method for the smoke hood includes:

[0018] When the smoke hood is in operation, the first connecting rod is pressed, which drives the second connecting rod, the first crank rod, the second crank rod and the third connecting rod to move, so as to drive the first baffle and the second baffle to flip outward synchronously.

[0019] As a preferred embodiment of the present invention, when the smoke hood is in operation, the outward angle α formed by the first baffle and the vertical direction, and the outward angle β formed by the second baffle and the vertical direction, wherein the outward angle α < the outward angle β.

[0020] As a preferred embodiment of the present invention, when the smoke hood is in operation, the third baffle forms an outward angle δ with the vertical direction, and the values ​​of the outward angle α, the outward angle β and the outward angle δ are in the following ranges: 0°≤α<45°, 0°≤β≤90°, 0°≤δ≤45°.

[0021] As a preferred embodiment of the present invention, when the smoke hood is in operation, the horizontal gap L1 between the first baffle and the second baffle is greater than 0 cm.

[0022] As a preferred embodiment of the present invention, when the smoke hood is in a non-working state, the vertical gap between the first baffle and the second baffle is H1, where 0cm < H1 < 1cm.

[0023] The beneficial effects of this invention are:

[0024] The multi-baffle linkage control method of the present invention, when the range hood is not in operation, has the first baffle and the second baffle coplanarly covering the opening side of the range hood housing to reduce the space occupied by the range hood and protect the internal structure of the range hood housing. When the range hood is in operation, under the action of the driving device, the first baffle and the second baffle are linked and synchronously flipped open, expanding the smoke collection space and providing a better smoke blocking effect, while also reducing obstruction of the user's view. There is no movement interference between the first baffle and the second baffle, and the oil fume inlet formed by the range hood is closer to the smoke generation area, resulting in a better smoke extraction effect. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the range hood in a non-working state;

[0026] Figure 2 This is a structural diagram of a range hood in operation.

[0027] Figure 3 This is a schematic diagram of the internal structure of the range hood when it is not in operation;

[0028] Figure 4 This is a schematic diagram of the internal structure of the range hood when it is in operation;

[0029] Figure 5 This is a structural diagram of the multi-link assembly and baffle assembly of the range hood when it is not in operation (the linkage structure is hidden).

[0030] Figure 6 This is a structural diagram of the multi-link assembly and baffle assembly of the range hood in operation.

[0031] Figure 7 This is a schematic diagram of the linkage rod assembly and baffle assembly when the range hood is in a non-working state;

[0032] Figure 8 This is a schematic diagram of the linkage rod assembly and baffle assembly when the range hood is in operation.

[0033] In the picture:

[0034] 1. Drive unit; 11. Electric actuator;

[0035] 2. Multi-link assembly; 21. Moving frame; 211. First slide rail; 212. Second slide rail; 22. Main push rod; 23. Linkage rod group; 231. First connecting rod; 232. Second connecting rod; 233. Third connecting rod; 234. First connecting frame; 235. Second connecting frame; 236. First crank; 237. Second crank;

[0036] 24. First rotating rod; 25. Second rotating rod;

[0037] 3. Baffle assembly; 31. First baffle; 32. Second baffle; 33. Third baffle; 331. Through hole;

[0038] 100. Range hood housing. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0043] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] This invention provides a multi-baffle linkage control method for a range hood, the specific structure of which is as follows: Figures 1-8 As shown, it includes a drive device 1 installed on the range hood housing 100 and a baffle assembly 3 rotatably connected to the top of the opening side of the range hood housing 100. The baffle assembly 3 includes a first baffle 31 and a second baffle 32. The first baffle 31 is rotatably connected to the top of the opening side of the range hood housing 100. The multi-baffle linkage control method of the range hood includes:

[0045] When the range hood is not in operation, such as Figure 1 and Figure 3 As shown, the first baffle 31 and the second baffle 32 are coplanarly covered to seal the opening side of the range hood housing 100, so as to reduce the space occupied by the range hood and protect the internal structure of the range hood housing 100.

[0046] When the range hood is in operation, such as Figure 2 and Figure 4 As shown, the drive device 1 synchronously drives the first baffle 31 and the second baffle 32 to flip outwards, which expands the smoke collection space of the range hood, provides better smoke blocking and collection effects, and reduces obstruction of the user's line of sight. There is no movement interference between the first baffle 31 and the second baffle 32, and the oil fume inlet formed by the range hood is closer to the smoke generation area, which provides a better smoke extraction effect.

[0047] Optionally, in the above-mentioned multi-baffle linkage control method for the range hood, the baffle assembly 3 further includes a third baffle 33, which is rotatably connected to the bottom of the opening side of the range hood housing 100. For example... Figure 3 and Figure 4As shown, when the range hood is not in operation, the third baffle 33 is against the inner side of the first baffle 31 and the second baffle 32. When the range hood is in operation, the drive device 1 drives the first baffle 31, the second baffle 32 and the third baffle 33 to flip simultaneously away from the range hood housing 100. The first baffle 31 and the second baffle 32 form a larger smoke-gathering space, while the third baffle 33 flips outward to block the entrance of the smoke-gathering space. The third baffle 33 is provided with uniformly spaced strip-shaped smoke inlet holes. Smoke is drawn into the range hood housing 100 through the strip-shaped smoke inlet holes on the third baffle 33. The third baffle 33 not only optimizes the airflow channel to facilitate the intake of oil fumes and obtain a better intake effect, but also effectively prevents foreign objects from being drawn into the range hood, improving the safety of use. The first baffle 31, the second baffle 32, and the third baffle 33 can achieve synchronous flipping motion through the same drive device 1. The different motion requirements of multiple baffles can be achieved through a single drive source, and multiple baffle functions can be realized at the same time. This can effectively save power costs and effectively avoid the synchronization and interference problems that exist in multiple power controls.

[0048] Optionally, in the above-mentioned multi-baffle linkage control method for the range hood, the range hood also includes a multi-link assembly 2, which is connected to the first baffle 31, the second baffle 32 and the third baffle 33. When the range hood is in operation, under the driving action of the driving device 1, it can simultaneously drive the first baffle 31, the second baffle 32 and the third baffle 33 to rotate outward, thereby realizing the synchronous linkage of the first baffle 31, the second baffle 32 and the third baffle 33.

[0049] Specifically, in the above-mentioned multi-baffle linkage control method for the range hood, the multi-link assembly 2 includes a movable frame 21, a main push rod 22, and a linkage rod group 23. The movable frame 21 is connected to the output end of the drive device 1, and the movable frame 21 is provided with a first slide groove 211 and a second slide groove 212; a first rotating rod 24 is rotatably connected to the movable frame 21, the first end of the first rotating rod 24 is rotatably connected to the movable frame 21, the second end is movably connected to the first slide groove 211 and the first end of the second rotating rod 25, and the second end of the second rotating rod 25 is slidably connected to the second slide groove 212; the main push rod 22 is fixedly connected to the movable frame 21, the first end of the main push rod 22 is connected to the first baffle 31, and the second end is connected to the third baffle 33; the linkage rod group 23 is rotatably connected to the second end of the second rotating rod 25 through a first connecting rod 231, and the linkage rod group 23 and the first connecting rod 231 can cooperate to drive the first baffle 31 and the second baffle 32 to rotate simultaneously.

[0050] In this embodiment, as Figure 3 and Figure 4 As shown, the main push rod 22 is vertically and fixedly connected to the movable frame 21, and its first end (i.e. Figure 3 and Figure 4 The top end of the main push rod 22 (shown) is connected to the first baffle 31 via a short connecting rod, and the second end of the main push rod 22 (i.e. Figure 3 and Figure 4 The bottom end of the main push rod 22 (shown) is connected to the third baffle 33 via a short connecting rod; the movable frame 21 is provided with an arc-shaped first slide groove 211 and a second slide groove 212, the two ends of the arc of the first slide groove 211 are respectively marked as position A and position B, and the two ends of the arc of the second slide groove 212 are respectively marked as position C and position D, and positions A, B, C, and D are marked as follows. Figure 6 As shown. When the range hood is not in operation, the second end of the first rotating rod 24 is at position A of the first sliding groove 211, and the second end of the second rotating rod 25 is at position C of the second sliding groove 212. At this time, the third baffle 33 retracts, and the first baffle 31 and the second baffle 32 are in a coplanar position, covering the opening side of the range hood housing 100, as shown. Figure 5 As shown; when the range hood is in operation, the drive device 1 pushes the moving frame 21 to move linearly, the first end of the main push rod 22 pushes the first baffle 31, and the first baffle 31 flips outward under the pushing action of the main push rod 22. The second end of the first rotating rod 24 moves from position A to position B of the first slide groove 211, and the second end of the second rotating rod 25 moves from position C to position D of the second slide groove 212. The linkage group 23 cooperates with the first connecting rod 231 to drive the second baffle 32 to flip relative to the first baffle 31, as shown. Figure 6 and Figure 4 As shown, the first baffle 31, the second baffle 32 and the third baffle 33 are rotated in a coordinated manner.

[0051] Specifically, in the above-mentioned multi-baffle linkage control method for the range hood, the linkage rod group 23 includes a second connecting rod 232, a third connecting rod 233, a first connecting frame 234, a second connecting frame 235, and a first crank rod 236 and a second crank rod 237 that are rotatably connected. The first connecting frame 234 and the second connecting frame 235 are respectively connected to the inner walls of the first baffle 31 and the second baffle 32. The two ends of the first connecting frame 234 are respectively movably connected to the first end of the second connecting rod 232 and the first end of the second crank rod 237. The two ends of the second connecting frame 235 are respectively movably connected to the first end of the first crank rod 236 and the first end of the third connecting rod 233. The second end of the third connecting rod 233 is movably connected to the second end of the second crank rod 237. The end of the first connecting rod 231 away from the second rotating rod 25 is movably connected to the second end of the second connecting rod 232 and the second end of the first crank rod 236.

[0052] In this embodiment, when the driving device 1 drives the moving frame 21 to move, such as Figure 6 As shown, in conjunction with the reference appendix Figure 7 and attached Figure 8The main push rod 22 pushes the first baffle 31 to flip, and the first connecting frame 234 moves with the first baffle 31, driving the second connecting rod 232, the first connecting rod 231, the second rotating rod 25, and the first rotating rod 24 to move. The second end of the second rotating rod 25 moves from position C to position D in the second slide groove 212, and the second end of the first rotating rod 24 moves from position A to position B in the first slide groove 211. At the same time, the first connecting rod 231 is pressed, causing the first crank rod 236 and the second crank rod 237 to move together, forming an obtuse angle between the first baffle 31 and the second baffle 32. This linkage rod group 23 enables the first baffle 31 and the second baffle 32 to flip and open smoothly, effectively avoiding interference between the lower edge of the first baffle 31 and the second baffle 32 during the outward flipping process.

[0053] Optionally, the third baffle 33 is provided with a through hole 331 to provide clearance space for the linkage assembly 23. One end of the linkage assembly 23 is connected to the first baffle 31, and the other end passes through the through hole 331 and is connected to the second baffle 32. It can be understood that, as Figure 4 As shown, in order to prevent the third baffle 33 from interfering with the linkage group 23 when it flips outward, a through hole 331 is provided on the third baffle 33 for the linkage group 23 to pass through. The through hole 331 provides clearance space to prevent the third baffle 33 from interfering with the linkage group 23.

[0054] Optionally, in the above-mentioned multi-baffle linkage control method for the range hood, when the range hood is in operation, the first baffle 31 forms an outward turning angle α with the vertical direction, and the second baffle 32 forms an outward turning angle β with the vertical direction, with the outward turning angle α < the outward turning angle β, so that the first baffle 31 and the second baffle 32 are in the obtuse angle shape with the best outward turning angle, thereby improving the smoke extraction effect and reducing visual obstruction.

[0055] Preferably, in the above-mentioned multi-baffle linkage control method for range hoods, when the range hood is in the working state, such as Figure 4 As shown, in this embodiment, the preferred range of motion for the outward-turning angle α is 0°≤α<45°, the preferred range of motion for the outward-turning angle β is 0°≤β≤90°, and the preferred range of motion for the outward-turning angle δ is 0°≤δ≤45°. This ensures that the first baffle 31, the second baffle 32, and the third baffle 33 are in their optimal state, providing strong smoke blocking, smoke gathering, and smoke extraction effects without obstructing the user's view, thus improving the user experience. It is understood that the range of motion for the outward-turning angle β is not limited to 0°-90°. The range can be expanded from 0°-90° to 0°-270° by adjusting the length of some connecting rods in the linkage group 23. The design should be selected according to actual needs and is not limited to the range shown in this embodiment.

[0056] Preferably, in the above-mentioned multi-baffle linkage control method for range hoods, such as Figure 8As shown, when the range hood is in operation, after the first baffle 31 and the second baffle 32 are rotated open, the horizontal gap L1 between the first baffle 31 and the second baffle 32 is greater than 0cm, which effectively prevents the possibility of oil fumes escaping from the gap between the first baffle 31 and the second baffle 32 when the range hood is working, and obtains a better smoke collection and blocking effect.

[0057] Preferably, when the range hood is not in operation, the vertical gap between the first baffle 31 and the second baffle 32 is H1, where 0cm < H1 < 1cm. In this embodiment, as... Figure 7 As shown, the vertical gap H1 between the first baffle 31 and the second baffle 32 is preferably close to 0, and the absence of gaps can provide users with a better visual experience.

[0058] Optionally, in the above-mentioned multi-baffle linkage control method for the range hood, the drive device 1 includes an electric push rod 11, which drives the moving frame 21 to move linearly through the linear output end of the electric push rod 11. In addition, the drive device 1 can be other types of linear drive mechanisms, such as hydraulic push rod transmission, gear and rack transmission, etc., including but not limited to the method used in this embodiment.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for multi-baffle linkage control of a range hood, characterized in that, The range hood includes a drive device (1) installed on the range hood housing (100) and a baffle assembly (3) rotatably connected to the top of the opening side of the range hood housing (100). The baffle assembly (3) includes a first baffle (31) and a second baffle (32). The multi-baffle linkage control method of the range hood includes: When the range hood is not in operation, the first baffle (31) and the second baffle (32) coplanarly cover the opening side of the range hood housing (100); When the range hood is in operation, the driving device (1) drives the first baffle (31) and the second baffle (32) to flip simultaneously away from the range hood housing (100); The baffle assembly (3) further includes a third baffle (33), which is rotatably connected to the bottom of the opening side of the range hood housing (100); the multi-baffle linkage control method for the range hood includes: When the range hood is not in operation, the third baffle (33) is abutted against the inner side of the first baffle (31) and the second baffle (32); When the range hood is in operation, the drive device (1) drives the first baffle (31), the second baffle (32) and the third baffle (33) to flip simultaneously away from the range hood housing (100).

2. The multi-baffle linkage control method for a range hood according to claim 1, characterized in that, The range hood also includes a multi-link assembly (2), and the multi-baffle linkage control method of the range hood includes: When the smoke machine is in operation, the driving device (1) drives the multi-bar assembly (2) to rotate the first baffle (31), the second baffle (32) and the third baffle (33) synchronously.

3. The multi-baffle linkage control method for a range hood according to claim 2, characterized in that, The multi-link assembly (2) includes a movable frame (21), a main push rod (22), and a linkage group (23), wherein the movable frame (21) is connected to the linkage group (23) in a transmission manner; the multi-baffle linkage control method for the smoke machine includes: When the smoke machine is in working condition, the drive device (1) pushes the moving frame (21) to move linearly, and the first end and the second end of the main push rod (22) respectively push the first baffle (31) and the third baffle (33) to flip outward, and the second baffle (32) flips outward through the linkage rod group (23).

4. The multi-baffle linkage control method for a range hood according to claim 3, characterized in that, The movable frame (21) is provided with a first slide groove (211) and a second slide groove (212); the first end of the first rotating rod (24) is rotatably connected to the movable frame (21), and the second end is slidably connected to the first slide groove (211); the first end and the second end of the second rotating rod (25) are respectively movably connected to the second end of the first rotating rod (24) and the second slide groove (212); the linkage rod group (23) is rotatably connected to the second end of the second rotating rod (25) through the first connecting rod (231); the multi-baffle linkage control method of the smoke machine includes: When the smoke hood is in working condition, the second end of the first rotating rod (24) moves from position A of the first slide groove (211) to position B, and the second end of the second rotating rod (25) moves from position C of the second slide groove (212) to position D. The linkage rod group (23) cooperates with the first connecting rod (231) to drive the second baffle (32) to flip relative to the first baffle (31).

5. The multi-baffle linkage control method for a range hood according to claim 4, characterized in that, The linkage assembly (23) includes a second connecting rod (232), a third connecting rod (233), a first connecting frame (234), a second connecting frame (235), and a first crank (236) and a second crank (237) rotatably connected. The first connecting frame (234) and the second connecting frame (235) are respectively connected to the inner walls of the first baffle (31) and the second baffle (32). The end of the first connecting rod (231) away from the second rotating rod (25) is movably connected to the second connecting rod (232) and the first crank (236). The multi-baffle linkage control method of the smoke machine includes: When the smoke machine is in operation, the first connecting rod (231) is pressed and drives the second connecting rod (232), the first crank rod (236), the second crank rod (237) and the third connecting rod (233) to move, so as to drive the first baffle (31) and the second baffle (32) to flip outward synchronously.

6. The multi-baffle linkage control method for a range hood according to any one of claims 1-5, characterized in that, When the smoke hood is in operation, the first baffle (31) forms an outward angle α with the vertical direction, and the second baffle (32) forms an outward angle β with the vertical direction, wherein the outward angle α < the outward angle β.

7. The multi-baffle linkage control method for a range hood according to claim 6, characterized in that, When the smoke machine is in working condition, the third baffle (33) forms an outward angle δ with the vertical direction. The values ​​of the outward angle α, the outward angle β and the outward angle δ are: 0°≤α<45°, 0°≤β≤90°, 0°≤δ≤45°.

8. The multi-baffle linkage control method for a range hood according to any one of claims 1-5, characterized in that, When the smoke hood is in operation, the horizontal gap L1 between the first baffle (31) and the second baffle (32) is greater than 0 cm.

9. The multi-baffle linkage control method for a range hood according to any one of claims 1-5, characterized in that, When the range hood is not in operation, the vertical gap between the first baffle (31) and the second baffle (32) is H1, where 0cm < H1 < 1cm.

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