Range hood

Abstract

The utility model discloses a range hood, which comprises a shell, a range hood cover and a range hood cover, the flow dividing structure is arranged in the oil smoke suction channel and used for dividing the oil smoke suction channel into a left side channel and a right side channel, the flow dividing structure comprises a rotating part rotationally arranged in the oil smoke suction channel, and the rotating part is used for adjusting the size of the left side channel and the size of the right side channel; the rotating range of the rotating part relative to the left side channel and / or the right side channel from the vertical state is 0-90 degrees. According to the technical scheme, the requirement for improving the oil smoke suction effect of the range hood can be more effectively met.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] Range hoods are usually installed above cooking appliances and can quickly extract and discharge the fumes generated during the cooking process.

[0003] In order to adapt to the layout of the left and right double burners of the kitchen stove, the existing range hood is often provided with two left and right air inlets to match the stove, and each burner is matched with one air inlet to achieve uniform oil fume extraction for the cooking utensils on the two burners.

[0004] However, in some cooking scenarios, users only use one burner to cook, resulting in a large amount of oil smoke under one air inlet, while only a small amount of oil smoke is diffused under the other air inlet, or the cooking utensils on one burner are used for frying and other operations that produce a large amount of oil smoke, while the cooking utensils on the other burner are used for stewing and other operations that produce a small amount of oil smoke, resulting in a large amount of oil smoke under one air inlet, while a small amount of oil smoke is generated under the other air inlet. In these cooking scenarios, if the uniform oil smoke extraction method is still used, the oil smoke on the side with a large amount of oil smoke cannot be completely extracted, while the wind force on the side with a small amount of oil smoke is excessive, resulting in poor oil smoke extraction effect of the range hood. Utility Model Content

[0005] The main purpose of the utility model is to provide a range hood, aiming to effectively meet the demand for improving the oil fume extraction effect of the range hood.

[0006] To achieve the above object, the range hood proposed by the utility model comprises:

[0007] A housing having an oil fume suction passage therein; and

[0008] A diversion structure is arranged in the oil fume suction channel, and is used to divide the oil fume suction channel into a left channel and a right channel. The diversion structure includes a rotating part rotatably arranged in the oil fume suction channel, and the rotating part is used to adjust the size of the left channel and the right channel. The rotating part can rotate from a vertical state relative to the left channel and / or the right channel in a range of 0° to 90°.

[0009] Optionally, when the channel constructed between the rotating part and the left channel or the right channel is smallest, the rotation angle of the rotating part relative to the left channel or the right channel from the vertical state is β, and the value range of β is 30° to 60°.

[0010] Optionally, the outer shell includes a smoke collecting hood and a fan cover arranged on the upper side of the smoke collecting hood, a smoke outlet is arranged between the fan cover and the smoke collecting hood, and the rotating part can be rotatably arranged in the smoke collecting hood, when the free end of the rotating part is closest to the left edge of the smoke outlet, the channel constructed between the rotating part and the left channel is the smallest; when the free end of the rotating part is closest to the right edge of the smoke outlet, the channel constructed between the rotating part and the right channel is the smallest.

[0011] Optionally, the outer shell includes a smoke collecting hood and a fan hood arranged on the upper side of the smoke collecting hood, a smoke outlet is arranged between the fan hood and the smoke collecting hood, and two guide members are arranged on opposite sides of the smoke outlet in the smoke collecting hood, and the width between the two guide members is gradually reduced in the direction approaching the smoke outlet; when the free end of the rotating part is closest to the guide member on the left, the channel constructed between the rotating part and the left channel is the smallest; when the free end of the rotating part is closest to the guide member on the right, the channel constructed between the rotating part and the right channel is the smallest.

[0012] Optionally, the upper end of the rotating portion is arranged no higher than the smoke outlet.

[0013] Optionally, the diversion structure further includes a fixed portion connected to the housing, and the rotating portion is rotatably connected to the fixed portion.

[0014] Optionally, the fixing portion is located at the lower side of the rotating portion, and a connecting groove is provided on the lower end surface of the rotating portion so as to movably cover the upper end of the fixing portion through the connecting groove.

[0015] Optionally, the fixed part is provided with a left positioning stop protrusion and a right positioning stop protrusion, and when the rotating part stops against the left positioning stop protrusion, the rotation angle of the rotating part relative to the left channel is the largest; when the rotating part stops against the right positioning stop protrusion, the rotation angle of the rotating part relative to the right channel is the largest.

[0016] Optionally, the diverter structure further comprises an extension portion provided on the rotating portion, and the extension portion is capable of changing the length of the diverter structure to change the ability of the diverter structure to adjust the sizes of the left channel and the right channel.

[0017] Optionally, the shell includes a guide plate, the guide plate includes a main guide section extending upwardly and obliquely in a direction from rear to front, the main guide section is provided with a smoke inlet connected to the oil smoke suction channel; at least part of the rotating part is located on the upper side of the smoke inlet, and an avoidance structure is provided between the front edge of the rotating part and the part of the main guide section located on the upper side of the smoke inlet.

[0018] The technical solution of the utility model is to set a diversion structure in the oil fume suction channel to separate the oil fume suction channel into a left channel and a right channel, thereby effectively reducing the vortex caused by the collision of two streams of oil smoke entering the oil fume suction channel from both sides of the smoke inlet, improving the smoothness of oil smoke passing through the oil fume suction channel, thereby improving the suction effect of the range hood and reducing noise; in addition, the diversion structure includes a rotating part, which can increase the channel corresponding to the large amount of oil smoke side by rotating the rotating part, and reduce the channel corresponding to the small amount of oil smoke side, thereby improving the oil fume suction capacity of the channel corresponding to the large amount of oil smoke side, and reducing the oil fume suction capacity of the channel corresponding to the small amount of oil smoke side, thereby improving the oil fume suction effect of the range hood; in addition, the rotation range α of the rotating part relative to the left channel and / or the right channel from the vertical state is 0° to 90°, so that the rotation range α of the rotating part is large, so that the rotating part has a strong ability to adjust the size of the left channel and / or the right channel, thereby more effectively meeting the demand for improving the oil fume suction effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of an embodiment of the range hood of the utility model;

[0021] Figure 2 for Figure 1 A front view schematic diagram of a central range hood;

[0022] Figure 3 for Figure 1 Schematic diagram of the rear view of the central range hood with the back panel hidden;

[0023] Figure 4 for Figure 1 A schematic front view of a central range hood with the smoke collecting plate and air guide plate hidden;

[0024] Figure 5 for Figure 1 A partial cross-sectional schematic diagram of a mid-range hood;

[0025] Figure 6 for Figure 1 A schematic diagram of the structure of the back panel of the central range hood;

[0026] Figure 7 for Figure 1 A schematic diagram of the structure of the diversion structure of the central range hood;

[0027] Figure 8 for Figure 7 A rear view schematic diagram of the middle split flow structure;

[0028] Fig. 9 for Figure 8 The enlarged schematic diagram of point A in the middle;

[0029] Fig.10 It is a cross-sectional schematic diagram of another embodiment of the range hood of the utility model;

[0030] Fig.11 for Fig.10 A schematic diagram of the structure of the diversion structure of the central range hood;

[0031] Fig.12 for Fig.11 A schematic diagram of the structure of the flexible isolation member of the middle diversion structure;

[0032] Fig.13 This is an explosion diagram of another embodiment of the range hood of the utility model;

[0033] Fig.14 for Fig.13 The enlarged schematic diagram of point B in the middle;

[0034] Fig.15 It is a structural schematic diagram of another embodiment of the flow diversion structure of the range hood of the utility model;

[0035] Fig.16 It is a structural schematic diagram of another embodiment of the range hood of the utility model.

[0036] Description of Figure Numbers:

[0037] 1. Shell; 11. Smoke hood; 12. Fan hood; 110. Smoke outlet; 100. Smoke inlet; 101. Left inlet; 102. Right inlet; 10. Fume suction channel; 10a. Left channel; 10b. Right channel; 13. Back plate; 131. Mounting boss; 14. Guide plate; 141. Main guide section; 142. Secondary guide section; 103. Wind guide trough; 15. Blocking member; 151. Passage; 16. Separation beam; 17. Guide member; 2. Diversion structure; 21. Rotating part; 21 a, rectifier surface; 21b, connecting groove; 211, avoidance gap; 212, reinforcing rib; 22, fixing part; 22a, guide surface; 22b, right positioning stopper; 22c, limit slot; 23, flexible isolation member; 231, installation plane; 232, positioning slot; 233, avoidance opening; 234, slit; 24, extension; 3, smoke exhaust fan; 31, fan inlet; 41, trigger member; 42, induction member; 411, trigger protrusion; 421, touch switch; 5, smoke collecting plate; 51, transmission rod

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0042] The utility model provides a range hood.

[0043] Reference Figures 1 to 3 In one embodiment of the utility model, the range hood comprises:

[0044] The housing 1 is provided with an oil fume suction passage 10; and

[0045] The diversion structure 2 is arranged in the oil fume suction channel 10, and is used to divide the oil fume suction channel 10 into a left channel 10a and a right channel 10b.

[0046] Without loss of generality, the housing 1 is provided with a smoke inlet 100 and a smoke exhaust port both of which are connected to the oil smoke suction channel 10. The diversion structure 2 is usually arranged near the smoke inlet 100 to separate the oil smoke suction channel 10 into a left channel 10a and a right channel 10b inside the smoke inlet 100, thereby effectively reducing the vortex caused by the collision of two streams of oil smoke entering the oil smoke suction channel 10 from both sides of the smoke inlet 100, improving the smoothness of oil smoke passing through the oil smoke suction channel 10, thereby improving the suction effect of the range hood and reducing noise.

[0047] In one embodiment, the diverter structure 2 can be configured as a structure that is fixed as a whole relative to the housing 1, that is, the diverter structure 2 can be a fixed structure fixed in the oil fume suction channel 10 (see Fig.15 However, the present design is not limited thereto. In other embodiments, the flow dividing structure 2 may also be configured as a structure that at least partially rotates relative to the housing 1 (see Figure 7 ) to adjust the size of the left channel 10a and the right channel 10b through the rotating part.

[0048] For the embodiment of the flow dividing structure 2 which is at least partially rotated relative to the housing 1, refer to Figures 1 to 3 , Figure 5 and Figure 7 The diversion structure 2 may include a rotating part 21 rotatably disposed in the oil fume suction channel 10, so as to adjust the size of the left channel 10a and the right channel 10b through the rotating part 21, thereby adjusting the oil fume suction capacity of the left channel 10a and the right channel 10b. It should be noted that the adjustment of the size of the left channel 10a and the right channel 10b referred to here does not mean adjusting the size of all positions in the left channel 10a and the right channel 10b, but means adjusting the size of the minimum connecting cross-section of the left and right channels and the right channel 10b. The minimum connecting cross-section is the throat of the corresponding channel, and its size is proportional to the suction capacity of the corresponding channel.

[0049] When the rotating part 21 rotates relative to the left channel 10a, the oil fume absorption capacity of the left channel 10a can be reduced, and the oil fume absorption capacity of the right channel 10b can be increased. When the rotating part 21 rotates relative to the right channel 10b, the oil fume absorption capacity of the right channel 10b can be reduced, and the oil fume absorption capacity of the left channel 10a can be increased. For a gas stove with two burners, a user may only use one of the left and right burners for cooking, resulting in a large amount of oil smoke being generated under one of the left channel 10a and the right channel 10b, and a small amount of oil smoke being diffused under the other. Alternatively, when a user uses both the left and right burners for cooking, one burner is performing operations such as frying that generate a large amount of oil smoke, while the other burner is performing operations such as stewing that generate a small amount of oil smoke, resulting in a large amount of oil smoke being generated under one of the left channel 10a and the right channel 10b, and a small amount of oil smoke being generated under the other. In this case, the channel corresponding to the side with a large amount of oil smoke can be enlarged and the channel corresponding to the side with a small amount of oil smoke can be reduced by rotating the rotating part 21, thereby improving the oil smoke absorption capacity of the channel corresponding to the side with a large amount of oil smoke, while reducing the oil smoke absorption capacity of the channel corresponding to the side with a small amount of oil smoke, thereby improving the oil smoke absorption effect of the range hood.

[0050] It is worth mentioning that the rotation control of the rotating part 21 can be manually controlled by the user according to the size of the oil smoke, or the range hood can be automatically controlled by setting an oil smoke monitoring device for detecting the size of the oil smoke on the corresponding side and configuring a controller according to the detection result of the oil smoke monitoring device.

[0051] In addition, in the present invention, the rotating portion 21 can be directly rotatably connected to the housing 1 or indirectly rotatably connected to the housing 1 .

[0052] For the embodiment indirectly connected to the housing 1, the flow dividing structure 2 further comprises a fixed portion 22 connected to the housing 1, and the rotating portion 21 is rotatably connected to the fixed portion 22 (see Figure 7). The fixed part 22 not only provides a mounting support for the rotating part 21 to be rotatably connected, but also has the function of separating the oil fume suction channel 10, thereby more effectively reducing the vortex caused by the collision of two streams of oil smoke entering the oil fume suction channel 10 from both sides of the smoke inlet 100, and better improving the smoothness of oil smoke passing through the oil fume suction channel 10. In addition, the space in the fixed part 22 can also be used to install a driving mechanism for driving the rotating part 21 to rotate, so as to isolate the oil fume for the driving mechanism through the shell of the fixed part 22, avoid the oil fume from being deposited on the driving structure, and thus extend the service life of the driving mechanism.

[0053] Reference Figure 5 and Figure 6 , further, the housing 1 is provided with a mounting boss 131 which is convex inwardly, and the fixing portion 22 is mounted on the mounting boss 131, so that the oil fume liquid condensed in the housing 1 and located above the mounting boss 131 will bypass the mounting boss 131 and flow downward, thereby preventing the oil liquid from leaking from the connection between the fixing portion 22 and the housing 1 to the outside of the range hood. Optionally, the mounting boss 131 is provided on the back plate 13 of the housing 1. Further optionally, part of the back plate 13 is raised into the oil fume suction channel 10 to form the mounting boss 131 which is convex inwardly, and a receiving groove is formed on the back side of the mounting boss 131 to receive the outer end of the fastener connecting the fixing portion 22 and the mounting boss 131 through the receiving groove, and the fastener can be a screw or a rivet, etc.

[0054] Reference Figure 5 and Figure 7 Furthermore, the fixed portion 22 is located at the lower side of the rotating portion 21. Thus, the fixed portion 22 is arranged closer to the smoke inlet 100 than the rotating portion 21. The two streams of smoke entering the smoke suction channel 10 from both sides of the smoke inlet 100 can be separated by the fixed portion 22, thereby limiting the collision of the two streams of smoke, reducing eddy currents, and improving the smoothness of smoke suction. However, the present design is not limited thereto. In other embodiments, the fixed portion 22 can also be located at the upper side of the rotating portion 21.

[0055] Without loss of generality, refer to Figure 8 The rotating portion 21 has two rectifying surfaces 21 a facing the left channel 10 a and the right channel 10 b respectively.

[0056] Furthermore, the spacing between the two straightening surfaces 21a is gradually reduced in the direction away from the fixed part 22, so as to reduce the distance between the ends of the two straightening surfaces 21a away from the fixed part 22, thereby reducing the vortex generated when the oil smoke airflow leaves the end of the straightening surface 21a away from the fixed part 22, thereby reducing noise. Optionally, the ends of the two straightening surfaces 21a away from the fixed part 22 are connected to form a conical top, which can not only reduce the generation of vortex, but also guide the condensed oil smoke downward through the conical top, thereby avoiding the accumulation of oil smoke at the top of the rotating part 21.

[0057] Furthermore, the distance between the two straightening surfaces 21a is set to be equal in the front-to-back direction, so that the straightening capabilities of the straightening surfaces 21a at various locations in the front-to-back direction are equivalent, thereby reducing the probability of eddy currents being generated on the straightening surfaces 21a.

[0058] Without loss of generality, refer to Figure 8 The fixing portion 22 has two guide surfaces 22a facing the left channel 10a and the right channel 10b respectively.

[0059] Furthermore, the distance between the two guide surfaces 22a is gradually reduced in the direction away from the rotating part 21, that is, the guide surface 22a is gradually inclined in the upward direction, which can guide the oil fume airflow to the rotating part 21 more smoothly.

[0060] Furthermore, the distance between the two guide surfaces 22a is set to be equal in the front-to-back direction, so that the guide capacity of the guide surface 22a at each location in the front-to-back direction is equivalent, thereby reducing the probability of vortex generation on the guide surface 22a.

[0061] Further, refer to Figure 8 and Fig. 9 The lower end surface of the rotating part 21 is provided with a connecting groove 21b, so that the upper end of the fixed part 22 can be movably covered by the connecting groove 21b. In this way, the oil smoke condensed on the rotating part 21 will drip onto the guide surface 22a of the fixed part 22 after flowing to the edge of the connecting groove 21b, thereby reducing the probability of condensed oil smoke entering between the rotating part 21 and the fixed part 22, and avoiding the accumulation of oil smoke in the connection gap between the two, resulting in the phenomenon of rotation jamming.

[0062] Optionally, the connecting groove 21b is arranged in an arc shape to match the rotation trajectory of the rotating part 21, thereby reducing the gap between the rotating part 21 and the fixed part 22, and further reducing the probability of oil entering the gap. Further optionally, the upper end surface of the fixed part 22 is arranged in an arc shape to further reduce the gap between the rotating part 21 and the fixed part 22, and even if oil drips onto the upper end surface of the fixed part 22, the oil will flow along the arc-shaped upper end surface to the guide surface 22a, thereby reducing the probability of oil entering the gap.

[0063] Further, refer to Figure 7 The lower end surface of the rotating part 21 is set in a V-shaped surface with the tip facing downward, so as to increase the rotation range of the rotating part 21, thereby improving the ability of the rotating part 21 to adjust the size of the left channel 10a and the right channel 10b.

[0064] Furthermore, in order to prevent the rotating portion 21 from rotating relative to the fixed portion 22 to a position that is difficult to reset, the fixed portion 22 is provided with a left positioning stop convex and a right positioning stop convex 22b (see Fig.14 ), when the rotating part 21 abuts against the left positioning stop convex, the rotation angle of the rotating part 21 relative to the left channel 10a is the largest; when the rotating part 21 abuts against the right positioning stop convex 22b, the rotation angle of the rotating part 21 relative to the right channel 10b is the largest. Optionally, the left positioning stop convex and the right positioning stop convex 22b are both arranged on the rear end surface of the fixed part 22 to avoid the left positioning stop convex and the right positioning stop convex 22b from forming a block to the rising oil fume airflow. Further optionally, the left positioning stop convex and the right positioning stop convex are respectively arranged on the opposite side edges of the rear end surface of the fixed part 22, and extend in the up-down direction, so that the left positioning stop convex and the right positioning stop convex 22b also have the function of guiding the oil fume airflow upward.

[0065] Reference Figure 1 , Figure 2 and Figure 5 , further, at least part of the diverter structure 2 extends into the lower side of the smoke inlet 100. It can be understood that, since the oil smoke airflow has a wall attachment effect, extending at least part of the diverter structure 2 into the lower side of the smoke inlet 100 can reduce the probability of the oil smoke airflow intersecting and colliding on the lower side of the diverter structure 2 to form a vortex, thereby improving the smoke intake efficiency, reducing vortex noise, and improving the user experience. It should be noted that in the embodiment where the fixing portion 22 is provided and the fixing portion 22 is located at the lower side of the rotating portion 21, at least part of the fixing portion 22 extends into the lower side of the smoke inlet 100.

[0066] Furthermore, the housing 1 includes a guide plate 14, and the guide plate 14 includes a main guide section 141 extending upwardly and obliquely in a direction from the rear to the front, and the smoke inlet 100 is arranged at the main guide section 141. The arrangement of the guide plate 14 increases the smoke collecting area on the left and right sides of the range hood, so as to improve the smoking effect of the smoke inlet 100 by utilizing the wall attachment effect of the airflow; at the same time, the arrangement of the guide plate 14 can also prevent the dirt in the range hood duct 10 from being exposed to the outside, thereby preventing the reduction of user experience.

[0067] Optionally, the periphery of the smoke inlet 100 is provided with an air guiding groove 103 which is arranged to be gradually contracted inwardly, so as to further improve the smoking effect of the smoke inlet 100 .

[0068] Furthermore, the guide plate 14 further includes a secondary guide section 142 connected to the lower end of the main guide section 141, and the secondary guide section 142 extends downwardly and obliquely in the direction from the back to the front, so as to gradually guide the oil smoke airflow to the smoke inlet 100. It can be understood that the secondary guide section 142 is a part of the wind guide sink 103; without loss of generality, the periphery of the smoke inlet 100 bulges inward to form the wind guide sink 103, so that the secondary guide section 142 extending downwardly and obliquely in the direction from the back to the front is formed on the lower side of the smoke inlet 100.

[0069] Further, refer to Figure 5 The front-to-rear width of the portion of the fixed portion 22 extending into the lower side of the smoke inlet 100 is gradually increased in the downward direction, so that the portion of the fixed portion 22 extending into the lower side of the smoke inlet 100 is adapted to abut against the secondary guide section 142, thereby, on the one hand, avoiding the oil smoke airflow from crossing and colliding in the gap between the fixed portion 22 and the secondary guide section 142 to generate eddy currents, and on the other hand, improving the installation stability of the fixed portion 22.

[0070] However, the present design is not limited thereto. In other implementations, refer to Fig.13 and Fig.14In order to reduce the probability of the oil smoke airflow intersecting and colliding to form a vortex at the lower side of the fixed part 22, the range hood may further include a blocking member 15 disposed at the lower side of the smoke inlet 100 and extending in the transverse direction, wherein the blocking member 15 is provided with a through-hole 151 corresponding to the fixed part 22, and the lower end of the fixed part 22 is provided with the through-hole 151. It can be understood that the blocking member 15 can prevent the oil smoke airflow from entering the lower side of the fixed part 22 on the one hand, and can also prevent the user from extending his hand into the lower side of the smoke inlet 100 when cleaning the oil in the oil smoke suction channel 10, thereby preventing the user's hand from being scratched by the sharp flange that may exist in the smoke inlet 100. Optionally, a limit slot 22c extending in the transverse direction is provided at the lower end of the fixed part 22, and the edge of the through-hole 151 is provided with the limit slot 22c to achieve the limit installation of the blocking member 15. Optionally, the blocking member 15 is detachably connected to the fixing portion 22. Further optionally, the blocking member 15 is connected to the fixing portion 22 by screw locking, so as to improve the connection reliability between the two.

[0071] Reference Figure 2 , Figure 3 and Figure 6 Further, the housing 1 includes a smoke hood 11 and a fan cover 12 disposed on the upper side of the smoke hood 11, the smoke inlet 100 is disposed on the smoke hood 11, the smoke exhaust port is disposed on the fan cover 12, a smoke outlet 110 is disposed between the fan cover 12 and the smoke hood 11, and the smoke exhaust fan 3 of the range hood is disposed in the fan cover 12. However, the present design is not limited thereto, and in some other implementations, the housing 1 may also include only the smoke hood 11, in which case the smoke exhaust fan 3 is integrated in the smoke hood 11; and in some other implementations, when the housing 1 includes both the smoke hood 11 and the fan cover 12, the smoke exhaust fan 3 may also partially extend into the smoke hood 11.

[0072] Reference Figure 2 Furthermore, the upper end of the diverter structure 2 is not higher than the smoke outlet 110, that is, the diverter structure 2 is entirely arranged in the smoke collecting hood 11; it can be understood that the fan hood 12 is usually smaller than the smoke collecting hood 11. If the upper end of the diverter structure 2 extends into the fan hood 12 through the smoke outlet 110, the extended part is likely to form wind resistance in the fan hood 12, resulting in increased noise.

[0073] Optionally, the upper end of the diverter structure 2 extends to the smoke outlet 110, so that the diverter length of the diverter structure 2 is larger, thereby having a better diverter effect. It should be noted that, for the diverter structure 2 including the rotating part 21 and the fixing part 22, and the fixing part 22 is located at the lower side of the rotating part 21, when the rotating part 21 is in a vertical state, the upper end of the rotating part 21 extends to the smoke outlet 110.

[0074] However, the present design is not limited thereto. In other embodiments, refer to Figure 2 , the upper end of the diverter structure 2 may also be located below the smoke outlet 110 and disposed close to the smoke outlet 110, so that the diverter structure 2 can also have a good diverter effect. Optionally, the vertical spacing between the upper end of the diverter structure 2 and the smoke outlet 110 is ΔH, the height of the smoke hood 11 is H, and the ΔH and H satisfy: 0≤ΔH≤0.1H, so that the upper end of the diverter structure 2 is disposed relatively close to the smoke outlet 110. Further optionally, the ΔH and H satisfy: 0≤ΔH≤1 / 30H, so that the closeness between the upper end of the diverter structure 2 and the smoke outlet 110 is more guaranteed. In other words, optionally, the ΔH satisfies, 2mm≤ΔH≤10mm, so that the upper end of the diverter structure 2 is disposed relatively close to the smoke outlet 110. Further optionally, the ΔH satisfies 3mm≤ΔH≤5mm, so that the proximity between the upper end of the diversion structure 2 and the smoke outlet 110 is more guaranteed.

[0075] Reference Figure 2 , further, in the embodiment of the diversion structure 2 including the rotating part 21, the rotation axis of the rotating part 21 is located between the upper edge and the lower edge of the smoke inlet 100, and is arranged close to the upper edge of the smoke inlet 100. Without loss of generality, taking the case where the rotating part 21 needs to adjust the left flue to the minimum as an example, the rotation axis of the rotating part 21 is arranged between the upper edge and the lower edge of the smoke inlet 100, so that the space between the rotating part 21 and the left flue can be as small as possible, thereby reducing the amount of oil smoke escaping into the space (this part of the oil smoke will be retained here, which is not conducive to smoke exhaust), and the rotation axis of the rotating part 21 is arranged close to the upper edge of the smoke inlet 100, so that when the rotating part 21 is rotated to the maximum rotatable angle in a relatively vertical state, the probability of the rotating part 21 being exposed to the smoke inlet 100 can be reduced. Optionally, the distance between the upper edge and the lower edge of the smoke inlet 100 is L3, the minimum distance between the rotation axis of the rotating part 21 and the upper edge of the smoke inlet 100 is L4, and L4 and L3 satisfy: 0≤L4≤0.25L3. Further optionally, L4 and L3 satisfy: 0.1L3≤L4≤0.2L3.

[0076] Reference Figure 2 , further, a partition beam 16 is provided on the smoke inlet 100 to separate the smoke inlet 100 into a left inlet 101 connected to the left flue and a right inlet 102 connected to the right flue; the fixing portion 22 is located on the inner side of the partition beam 16, and the partition beam 16 can cover the fixing portion 22 in the left and right directions. The technical solution of this embodiment is to arrange the fixing portion 22 on the inner side of the partition beam 16 to avoid the two oil fume airflows entering from the left inlet 101 and the right inlet 102 to collide and form a vortex on the inner side of the partition beam 16, thereby reducing noise and improving user experience. In addition, the covering of the fixing portion 22 by the partition beam 16 can prevent the fixing portion 22 from being exposed to the outside, so that even if there is oil fume liquid or other dirt attached to the fixing portion 22, the dirt will not be revealed to the user, avoiding the user's experience being affected, and the fixing portion 22 will not block the path of the oil fume airflow entering the smoke inlet 100. Optionally, the width of the partition beam 16 in the left-right direction is L1, the minimum distance between the fixing portion 22 and the edges of the left inlet 101 and the right inlet 102 is L2, and L2 and L1 satisfy: 0≤L2≤0.25L1.

[0077] Reference Figure 3 Furthermore, the rotatable range α of the rotating part 21 from the vertical state relative to the left channel 10a and / or the right channel 10b is 0° to 90°. In this way, the rotation range α of the rotating part 21 is larger, so that the rotating part 21 has a stronger ability to adjust the size of the left channel 10a and / or the right channel 10b.

[0078] In the utility model, when only the burner head on the right side is turned on, it is necessary to adjust the right channel 10b to the maximum and the left channel 10a to the minimum; and when only the burner head on the left side is turned on, it is necessary to adjust the left channel 10a to the maximum and the right channel 10b to the minimum. Optionally, when it is necessary to minimize the channel constructed between the rotating part 21 and the left channel 10a, it is necessary to control the rotation angle of the rotating part 21 from the vertical state relative to the left channel 10a to β1; and when it is necessary to minimize the channel constructed between the rotating part 21 and the right channel 10b, it is necessary to control the rotation angle of the rotating part 21 from the vertical state relative to the right channel 10b to β2. In one embodiment, the left channel 10a and the right channel 10b are symmetrically arranged, and the β1 and the β2 are both equal to β (see Figure 3), and the value range of β is 30° to 60°; however, the present design is not limited thereto, and in other embodiments, the β1 and the β2 may also be unequal.

[0079] For an embodiment in which the housing 1 includes a smoke collecting hood 11 and a fan hood 12, and the fan hood 12 is connected to the smoke collecting hood 11 through a smoke port 110, refer to Figure 3 , further, when the free end of the rotating part 21 is closest to the left edge of the cigarette outlet 110, the channel constructed between the rotating part 21 and the left channel 10a is the smallest; when the free end of the rotating part 21 is closest to the right edge of the cigarette outlet 110, the channel constructed between the rotating part 21 and the right channel 10b is the smallest. It should be noted that the "smallest channel" here can be completely closing the corresponding channel. In this case, the free end of the rotating part 21 will abut against the left edge or the right edge of the cigarette outlet 110; it can also be incompletely closing the corresponding channel, but minimizing the opening size of the corresponding channel. In this case, although there is a gap between the free end of the rotating part 21 and the left edge or the right edge of the cigarette outlet 110, the gap width is the smallest. Optionally, refer to Fig.16 In order to facilitate the complete closure of the corresponding channel and avoid the phenomenon of wind power waste when using a single burner, the diversion structure 2 also includes an extension part 24 arranged on the rotating part 21, and the extension part 24 can change the length of the diversion structure 2 to change the size adjustment ability of the diversion structure 2 to the left channel 10a and the right channel 10b. Further optionally, the extension part 24 can be slidably connected to the rotating part 21 and extend and retract by sliding; or the extension part 24 can be flip-connected to the rotating part 21 and open and retract by flipping; or the extension part 24 can also be arranged in a folded shape, and its extended length can be adjusted by the degree of expansion; of course, the extension part 24 can also be configured in other ways that can change the length of the rotating part 21.

[0080] However, the present design is not limited thereto. In other embodiments, the smoke collecting hood 11 may further be provided with two guide members 17 disposed on opposite sides of the smoke outlet 110 (see Figure 4), the width between the two guide pieces 17 is gradually reduced in the direction close to the smoke outlet 110, so as to smoothly guide the oil smoke airflow to the smoke outlet 110, improve the smoke exhaust smoothness, and at the same time avoid the oil smoke airflow from forming vortices at the corners on both sides of the top of the smoke hood 11, thereby reducing noise. In this embodiment, further, when the free end of the rotating part 21 is closest to the left guide piece 17, the channel constructed between the rotating part 21 and the left channel 10a is the smallest; when the free end of the rotating part 21 is closest to the right guide piece 17, the channel constructed between the rotating part 21 and the right channel 10b is the smallest.

[0081] Reference Figure 4 Without loss of generality, a smoke exhaust fan 3 is provided in the housing 1, and the smoke exhaust fan 3 is provided with a fan inlet 31 connected to the oil fume suction channel 10, and a fan outlet connected to the smoke exhaust port of the housing 1. Further, the fan inlet 31 is offset in the left-right direction, and the upper end of the diverter structure 2 is deflected relative to the vertical direction in the left-right direction, and the deflection direction of the diverter structure 2 is consistent with the offset direction of the fan inlet 31, so that the air intake volume of the left channel 10a and the right channel 10b tends to be consistent, that is, the smoke intake capacity of the left channel 10a and the right channel 10b tends to be consistent, so that when the left and right burners are both turned on, the left and right channels can absorb oil fume evenly, thereby improving the oil fume suction effect of the range hood. It is worth mentioning that since the fan inlet 31 is offset in the left and right directions, without loss of generality, taking the fan inlet 31 offset to the left as an example, in this case, the center of the fan inlet 31 is located on the left side of the vertical center plane of the fan cover 12, so that the negative pressure on the left side of the smoke outlet 110 is stronger than the negative pressure on the right side of the smoke outlet 110. In this way, the diversion structure 2 is deflected to the left by a certain angle to adjust the left channel 10a to be smaller than the right channel 10b, so that the smoke intake capacities of the left channel 10a and the right channel 10b can be made consistent, thereby achieving uniform oil fume absorption in the left and right channels.

[0082] In one embodiment, the offset distance of the fan inlet 31 in the left-right direction is small. In this case, the angle of deflection required at the upper end of the diverter structure 2 is also small. Optionally, the deflection angle γ of the diverter structure 2 ranges from 5° to 10° (see Figure 4 ).

[0083] In one embodiment, the flow-dividing structure 2 is fixed as a whole relative to the housing 1, that is, the flow-dividing structure 2 may be a fixed structure fixed in the oil fume suction channel 10 (see Fig.15In this embodiment, the diversion structure 2 does not have a portion that can rotate relative to the housing 1, but its upper end is configured to be fixedly deflected toward the corresponding side, so that the smoke intake capacities of the left channel 10a and the right channel 10b can be made consistent.

[0084] In another embodiment, the flow dividing structure 2 may also be configured as a structure that at least partially rotates relative to the housing 1 (see Figure 4 ). Further, the diversion structure 2 includes a rotating part 21 rotatably arranged in the oil fume suction channel 10, and the rotating part 21 is used to adjust the size of the left channel 10a and the right channel 10b. The rotating part 21 can be positioned in a preset state in which the air intake volume of the left channel 10a and the right channel 10b tends to be consistent. In the preset state, the rotating part 21 is deflected in the left and right directions relative to the vertical direction. It should be noted that, in this embodiment, the diversion structure 2 may also include a fixed part 22 connected to the outer shell 1, and the rotating part 21 is rotatably connected to the fixed part 22; of course, the diversion structure 2 may also not include the fixed part 22, and the rotating part 21 is directly rotatably connected to the outer shell 1.

[0085] In the present invention, the method for positioning the rotating part 21 in the preset state can be through mechanical matching or through inductive control.

[0086] As for the mechanical matching method, optionally, one of the housing 1 and the rotating part 21 is provided with a positioning protrusion (not shown), and the other is provided with a positioning pit (not shown). When the rotating part 21 is in the preset state, the positioning protrusion is embedded and matched with the positioning pit. It should be noted that the embedded matching between the positioning protrusion and the positioning pit does not cause the rotation ability of the rotating part 21 to be completely stuck. The role of the embedded matching is that when the rotating part 21 is not subjected to external force, or only subjected to a small external force, the rotating part 21 will not rotate, thereby maintaining the preset state. However, when the rotating part 21 is subjected to a large external force, the embedded matching between the positioning protrusion and the positioning pit will be broken, so that the rotating part 21 can further rotate beyond the preset state.

[0087] For the method of induction control, optionally, the oil fume extractor further includes a driving mechanism for driving the rotating part 21 to rotate, and a position acquisition device for acquiring the rotational position of the rotating part 21, and the driving mechanism is electrically connected to the position acquisition device. It is worth mentioning that the control process itself, in which the controller performs corresponding control according to the monitoring results fed back by the monitoring device electrically connected thereto, is relatively common. In this embodiment, the rotational position acquisition of the rotating part 21 is achieved by adding a position acquisition device, so that when the rotating part 21 rotates to the position corresponding to the preset state, the driving mechanism controls the rotating part 21 to stop at this position and maintain it in the preset state.

[0088] Further, refer to Figure 8 and Fig. 9 , the position acquisition device includes a triggering member 41 disposed on the rotating part 21, and a sensing member 42 disposed on the fixed part 22, the driving mechanism is electrically connected to the sensing member 42, when the rotating part 21 is in the preset state, the sensing member 42 is triggered by the triggering member 41, when the driving mechanism receives the trigger signal fed back by the sensing member 42, the driving mechanism controls the rotating part 21 to stop in the preset state. However, the present design is not limited to this, in other embodiments, the position acquisition device can also be configured as a device that can obtain the rotation angle of the rotating part 21 in real time, rather than a device that is only triggered at the position corresponding to the preset state.

[0089] In one embodiment, the trigger member 41 is configured as a magnet, and the induction member 42 is configured as a Hall sensor. When the rotating part 21 is in the preset state, the magnet is close to the Hall sensor, and the magnetic field strength detected by the Hall sensor is the strongest, thereby being triggered. In another embodiment, the trigger member 41 is configured as a trigger protrusion 411, and the induction member 42 is configured as a touch switch 421 (see Fig. 9 ), when the rotating part 21 is in the preset state, the trigger protrusion 411 presses and triggers the touch switch 421. In another embodiment, the trigger member 41 is configured as a reflective portion, and the sensing member 42 is configured as a light sensor, and the light sensor includes a transmitter and a receiver. When the rotating part 21 is in the preset state, the light signal emitted by the transmitter is reflected by the reflective portion and then incident on the receiver. However, the present design is not limited to this. In other implementations, the trigger member 41 and the sensing member 42 can also be configured in other forms, as long as it can be achieved that in the preset state, the sensing member 42 can be triggered by the trigger member 41.

[0090] For the embodiment in which the housing 1 is provided with the guide plate 14, refer to Figure 5 and Fig.10 , further, the diversion structure 2 includes a rotating part 21 rotatably arranged in the oil fume suction channel 10, the rotating part 21 is used to adjust the size of the left channel 10a and the right channel 10b, at least part of the rotating part 21 is located on the upper side of the smoke inlet 100, and an avoidance structure is provided between the front edge of the rotating part 21 and the part of the main flow section 141 located on the upper side of the smoke inlet 100. It can be understood that due to the inclined setting of the main flow section 141, if the front edge of the rotating part 21 directly fits and abuts the main flow section 141, the rotating part 21 will not be able to rotate during the left and right rotation process due to the interference with the main flow section 141. Therefore, the technical solution of this embodiment avoids the rotation of the rotating part 21 from being affected by the interference through the setting of the avoidance structure, thereby ensuring that the rotating part 21 has the ability to adjust the size of the left channel 10a and the right channel 10b. It should be noted that, in this embodiment, the diversion structure 2 may also include a fixed portion 22 connected to the outer shell 1, and the rotating portion 21 is rotatably connected to the fixed portion 22; of course, the diversion structure 2 may also not include the fixed portion 22, and the rotating portion 21 may be directly rotatably connected to the outer shell 1.

[0091] In the present invention, the avoidance structure can be only an air avoidance structure, or a combination of an air avoidance structure and a flexibly deformable filling structure. It can be understood that when the avoidance structure is only an air avoidance structure, it can also avoid the interference of the rotating part 21 when it rotates; and when the avoidance structure is further provided with a flexibly deformable filling structure on the basis of the air avoidance structure, it can not only avoid rotation interference, but also block the air avoidance structure through the flexibly deformable structure, so as to avoid the vortex of the airflow on both sides from intersecting and colliding at the air avoidance structure, thereby avoiding the generation of noise.

[0092] For the embodiment of the air-avoiding structure, refer to Figure 5 and Figure 7 Optionally, a front edge of the rotating portion 21 is provided with an avoidance notch 211 corresponding to a portion of the main flow section 141 located on the upper side of the smoke inlet 100, and the avoidance structure is configured as the avoidance notch 211. Due to the provision of the avoidance notch 211, the rotating portion 21 can avoid interference with the main flow section 141 during the process of rotating left and right, thereby ensuring that the rotating portion 21 has the ability to adjust the size of the left channel 10a and the right channel 10b.

[0093] Optionally, the avoidance notch 211 is provided with a reinforcing rib 212 extending in the up-down direction in the middle of the left-right direction. It can be understood that the thickness of the reinforcing rib 212 in the left-right direction is much smaller than the thickness of the rotating part 21 in the left-right direction, that is, a clearance position is formed on both sides of the reinforcing rib 212 to avoid interference with the main flow section 141 during the rotation process. Of course, the provision of the reinforcing rib 212 can improve the structural strength of the rotating part 21 and extend the service life of the rotating part 21. Further optionally, the convex height of the reinforcing rib 212 is gradually reduced in the downward direction, so that in the direction from the back to the front, the reinforcing rib 212 also extends upwardly and obliquely, and this shape is adapted to the extension shape of the main flow section 141, so that the interference between the reinforcing rib 212 and the main flow section 141 during the rotation process can be more effectively avoided. Optionally, the reinforcing rib 212 and the rotating part 21 are integrally formed, and the integrally formed structure has high strength, is conducive to the batch preparation of products, and improves the preparation efficiency of products.

[0094] For an embodiment of a combination of a void-avoiding structure and a flexibly deformable filling structure, refer to Figures 10 to 13 Optionally, the avoidance structure includes a flexible isolator 23 provided at the front edge of the rotating part 21. It should be noted that in the present utility model, there is an avoidance structure between the front edge of the rotating part 21 and the main airflow section 141, and the avoidance structure can be in the form of a notch, that is, the lower end portion of the front edge of the rotating part 21 can be cut off, or the front edge of the rotating part 21 can be cut off as a whole, thereby forming an overall avoidance from bottom to top. It can be understood that the flexible isolator 23 has a flexible deformation capability. During the left and right rotation of the rotating part 21, the flexible isolator 23 can abut against the main airflow section 141 through adaptive deformation, thereby avoiding rotation interference and avoiding the vortex of the airflow on both sides of the front edge of the rotating part 21, thereby avoiding the generation of noise. Optionally, the flexible isolator 23 can be configured as, but not limited to, a silicone member, a rubber member, a flexible foam material member or a brush member.

[0095] Optionally, at least part of the flexible isolating member 23 has a mounting plane 231 facing the front edge of the rotating portion 21, and the mounting plane 231 is arranged face-to-face with the front edge of the rotating portion 21 to reduce the probability of air leakage between the flexible isolating member 23 of this part and the front edge of the rotating portion 21, and the face-to-face mounting method is conducive to improving the stability of the connection between the two. Further optionally, the mounting plane 231 can be fixed by bonding or welding.

[0096] Optionally, a front edge of the rotating part 21 is provided with a relief notch 211 corresponding to the portion of the main flow section 141 located on the upper side of the smoke inlet 100, and a reinforcing rib 212 extending in the up-down direction is provided in the middle of the relief notch 211 in the left-right direction, and at least part of the flexible isolation member 23 is connected to the reinforcing rib 212. Both sides of the reinforcing rib 212 form a relief position, which can avoid interference with the main flow section 141 during the rotation process, and the reinforcing rib 212 can provide a mounting attachment for part of the flexible isolation member 23. Optionally, the flexible isolation member 23 is provided with a positioning slot 232 corresponding to the reinforcing rib 212, and the positioning slot 232 is snapped into the reinforcing rib 212. In this way, part of the flexible isolation member 23 can be positioned and installed on the reinforcing rib 212 first, and then the mounting plane 231 and the rotating part 21 are fixed. Therefore, when fixing the mounting plane 231, there is no need to hold the flexible isolation member 23, and the fixing and installation operation is more convenient. Of course, the flexible isolation member 23 and the reinforcing rib 212 can also be connected by other connection methods.

[0097] Optionally, the upper end of the flexible isolator 23 is in a cone shape with the tip facing upward, which can not only reduce the generation of vortexes, but also guide the condensed oil smoke downward through the cone upper end, thereby avoiding the accumulation of oil smoke on the upper end of the flexible isolator 23.

[0098] Furthermore, the range hood is provided with a smoke collecting plate 5 that can be opened and closed corresponding to the smoke inlet 100, and the power mechanism of the smoke collecting plate 5 includes an active driving part arranged on one side of the left and right directions of the smoke collecting plate 5, a driven driving part arranged on the other side of the left and right directions of the smoke collecting plate 5, and a transmission rod 51 that transmits and connects the active driving part and the driven driving part, so that the use of the active driving part can be reduced, the product cost can be reduced, and the phenomenon of asynchronous driving on both sides can be avoided. In this embodiment, the flexible isolation member 23 is provided with an avoidance opening 233 corresponding to the transmission rod 51, and the transmission rod 51 is penetrated through the avoidance opening 233 to avoid the flexible isolation member 23 from interfering with the setting of the transmission rod 51. Optionally, the flexible isolation member 23 is also provided with a slit 234 on the side of the avoidance opening 233 away from the rotating part 21, and the slit 234 is connected to the avoidance opening 233 to improve the deformation capacity of the avoidance opening 233.

[0099] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A range hood, characterized in that: include: The outer shell is provided with an oil fume suction passage; as well as A diversion structure is arranged in the oil fume suction channel, and is used to divide the oil fume suction channel into a left channel and a right channel. The diversion structure includes a rotating part rotatably arranged in the oil fume suction channel, and the rotating part is used to adjust the size of the left channel and the right channel. The rotating part can rotate from a vertical state relative to the left channel and / or the right channel in a range of 0° to 90°.

2. The range hood according to claim 1, characterized in that: When the channel constructed between the rotating part and the left channel or the right channel is the smallest, the rotation angle of the rotating part relative to the left channel or the right channel from the vertical state is β, and the value range of β is 30° to 60°.

3. The range hood according to claim 1, characterized in that: The outer shell includes a smoke collecting hood and a fan cover arranged on the upper side of the smoke collecting hood, a smoke outlet is arranged between the fan cover and the smoke collecting hood, and the rotating part is rotatably arranged in the smoke collecting hood. When the free end of the rotating part is closest to the left edge of the smoke outlet, the channel constructed between the rotating part and the left channel is the smallest; when the free end of the rotating part is closest to the right edge of the smoke outlet, the channel constructed between the rotating part and the right channel is the smallest.

4. The range hood according to claim 1, characterized in that: The outer shell includes a smoke collecting hood and a fan cover arranged on the upper side of the smoke collecting hood, a smoke outlet is arranged between the fan cover and the smoke collecting hood, and two guide members are arranged on opposite sides of the smoke outlet in the smoke collecting hood, and the width between the two guide members is gradually reduced in the direction approaching the smoke outlet; when the free end of the rotating part is closest to the guide member on the left, the channel constructed between the rotating part and the left channel is the smallest; when the free end of the rotating part is closest to the guide member on the right, the channel constructed between the rotating part and the right channel is the smallest.

5. The range hood according to claim 3 or 4, characterized in that: The upper end of the rotating part is arranged no higher than the smoke outlet.

6. The range hood according to claim 1, characterized in that: The diversion structure further includes a fixing portion connected to the housing, and the rotating portion is rotatably connected to the fixing portion.

7. The range hood according to claim 6, characterized in that: The fixing part is located at the lower side of the rotating part, and a connecting groove is provided on the lower end surface of the rotating part so as to movably cover the upper end of the fixing part through the connecting groove.

8. The range hood according to claim 6, characterized in that: The fixed part is provided with a left positioning stop protrusion and a right positioning stop protrusion. When the rotating part stops at the left positioning stop protrusion, the rotation angle of the rotating part relative to the left channel is the largest; when the rotating part stops at the right positioning stop protrusion, the rotation angle of the rotating part relative to the right channel is the largest.

9. The range hood according to claim 1, characterized in that: The diverter structure further includes an extension portion disposed on the rotating portion, and the extension portion is capable of changing the length of the diverter structure to change the ability of the diverter structure to adjust the sizes of the left channel and the right channel.

10. The range hood according to claim 1, characterized in that: The shell includes a guide plate, which includes a main guide section extending upwardly and obliquely in a direction from rear to front, and the main guide section is provided with a smoke inlet connected to the oil smoke suction channel; at least part of the rotating part is located on the upper side of the smoke inlet, and an avoidance structure is provided between the front edge of the rotating part and the part of the main guide section located on the upper side of the smoke inlet.

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