A range hood and a control method of the range hood

Abstract

The application belongs to the technical field of electrical appliances, and discloses a range hood and a control method of the range hood. A smoke gathering device comprises a smoke collecting hood, a turnover cavity assembly, a smoke gathering plate and a linkage driving mechanism. The lower end of the turnover cavity assembly is movably installed in the smoke collecting hood and can be turned outwards through the front side opening. The turnover cavity assembly has a smoke inlet communicating with the smoke collecting cavity. The smoke gathering plate is rotatably installed on the front side of the smoke collecting hood to open or close the smoke inlet and the front side opening. The linkage driving mechanism is configured to only drive the smoke gathering plate to rotate when the opening angle of the smoke gathering plate is less than or equal to a first preset opening angle, and to drive the smoke gathering plate and the turnover cavity assembly to be linked to open outwards or gather inwards when the opening angle of the smoke gathering plate is greater than the first preset opening angle. The application can improve the smoke gathering effect while saving energy consumption.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a smoke collection device, a range hood, and a control method for the range hood. Background Technology

[0002] A range hood is a common kitchen appliance used to extract cooking fumes from the kitchen. It can effectively purify the kitchen environment and improve the user's cooking experience.

[0003] To reduce the footprint of range hoods, existing technology provides a range hood comprising a smoke collection hood, a main smoke baffle, a first smoke plate, and a second smoke plate. The front of the smoke collection hood has an installation opening. The main smoke baffle is rotatably mounted on the front of the smoke collection hood. The lower end of the first smoke plate is hinged to the smoke collection hood, and its upper end is hinged to one side of the second smoke plate. The other side of the second smoke plate is hinged to the main smoke baffle. The second smoke plate has a smoke inlet. When the main smoke baffle rotates, it causes the first and second smoke plates to unfold in conjunction, so that the main smoke baffle, the first smoke plate, and the second smoke plate close together to form a smoke-collecting space.

[0004] Existing range hoods can enhance smoke collection through the coordinated operation of the first smoke plate, second smoke plate, and main smoke baffle. However, the driving components need to simultaneously drive the first smoke plate, second smoke plate, and main smoke baffle, resulting in high driving costs. Especially when the amount of smoke is small, if the main smoke baffle is fully opened, it will cause a significant waste of driving energy. On the other hand, reducing the driving cost by decreasing the flip angle of the main smoke baffle will result in partial obstruction of the smoke inlet, leading to poor smoke intake and affecting the normal use of the range hood. Summary of the Invention

[0005] The purpose of this invention is to provide a range hood and a control method for the range hood, which can improve the oil fume extraction effect of the range hood while reducing the driving cost of the range hood and saving energy.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A range hood includes a smoke collection hood having a smoke collection chamber and a front opening, characterized in that the range hood further includes:

[0008] The flip-up cavity assembly is movably installed inside the smoke collection hood at its lower end and can be flipped outward through the front opening. The flip-up cavity assembly has a smoke inlet communicating with the smoke collection cavity.

[0009] A smoke collection plate is rotatably mounted on the front side of the smoke collection hood to open or close the smoke inlet and the front opening;

[0010] The linkage drive mechanism is configured to drive the smoke-gathering plate to rotate only when the opening angle of the smoke-gathering plate is less than or equal to a first preset opening angle, and to drive the smoke-gathering plate and the flipping cavity assembly to open outward or close inward in linkage when the opening angle of the smoke-gathering plate is greater than the first preset opening angle.

[0011] As an optional technical solution for a range hood, the side of the flipping chamber assembly is provided with a connection hole. The linkage drive mechanism includes a flipping linkage component, a drive motor and a transmission component. The transmission component is connected to the flipping linkage component and the smoke gathering plate. While the drive motor drives the smoke gathering plate to rotate through the transmission component, it also actuates the flipping linkage component to slide in the connection hole, thereby driving the flipping chamber assembly to rotate.

[0012] As an optional technical solution for a range hood, the connecting hole includes a clearance hole and an actuation hole connected to the front end of the clearance hole. The shape of the clearance hole is consistent with the running trajectory of the flip linkage when the smoke collecting plate is opened from the closed state to the first preset opening angle. When the opening angle of the smoke collecting plate is less than the first preset opening angle, the flip linkage slides along the clearance hole. When the opening angle of the smoke collecting plate is greater than the first preset opening angle, the sliding of the flip linkage in the actuation hole actuates the flip cavity assembly to rotate.

[0013] And / or, the range hood further includes a reset member that always applies a backward-rotating elastic force to the flip-up cavity assembly.

[0014] As an optional technical solution for a range hood, the clearance hole is an arc-shaped hole with its opening facing the rotation axis of the smoke-collecting plate, and the actuation hole is an elongated hole extending along the height direction of the flipping cavity assembly.

[0015] As an optional technical solution for a range hood, the flip-up cavity assembly includes an outer mounting frame and an inner smoke-gathering frame. The lower end of the outer mounting frame is rotatably mounted inside the smoke collection hood. The inner smoke-gathering frame is slidably mounted on the outer mounting frame along the height direction of the outer mounting frame, so that the upper end of the inner smoke-gathering frame is close to or away from the smoke-gathering plate. The inner smoke-gathering frame has the smoke inlet. The linkage drive mechanism is connected to the outer mounting frame.

[0016] And / or, the smoke collecting plate includes a main smoke plate and an auxiliary smoke plate hinged to the lower end of the main smoke plate, the upper end of the main smoke plate is rotatably mounted on the smoke collecting hood, and the main smoke plate and the auxiliary smoke plate cooperate to close or open the front opening, and the linkage drive mechanism is connected between the main smoke plate and the flipping cavity assembly.

[0017] As an optional technical solution for a range hood, a connecting component is provided between the smoke-collecting plate and the inner smoke-collecting frame. The connecting component is configured to pull the upper end of the inner smoke-collecting frame close to the smoke-collecting plate when the smoke-collecting plate is flipped open relative to the smoke hood.

[0018] Alternatively, a connecting component is provided between the auxiliary smoke plate and the inner smoke collection frame. The connecting component is configured to pull the upper end of the inner smoke collection frame closer to the main smoke plate when the auxiliary smoke plate is flipped relative to the main smoke plate in a direction away from the smoke collection hood.

[0019] A control method for a range hood, applied to the control of the range hood as described above, the control method comprising: controlling the opening angle of the smoke-collecting plate according to the current cooking state, and when the current cooking state is a low-smoke cooking state, controlling the opening angle of the smoke-collecting plate to be less than or equal to a first preset opening angle.

[0020] As an optional technical solution for control methods, the smoke collecting plate includes a main smoke plate and an auxiliary smoke plate hinged to the lower end of the main smoke plate. The upper end of the main smoke plate is rotatably mounted on the smoke collection hood, and the linkage drive mechanism acts on the main smoke plate.

[0021] The control method further includes: when a preset expansion condition is met, controlling the auxiliary smoke plate to flip relative to the main smoke plate in a direction away from the smoke collection hood; and / or, the control method further includes: when it is determined that the smoke collection plate obstructs the user's view, controlling the auxiliary smoke plate to flip relative to the main smoke plate in a direction toward the smoke collection hood.

[0022] As an optional technical solution for the control method, the controller of the range hood has multiple smoke value ranges and air volume ranges built in. The control method includes: real-time detection of smoke concentration and actual operating air volume of the fan during the cooking process, and determining whether the preset expansion conditions are met based on the preset smoke range where the detected smoke value is located and the air volume range where the actual operating air volume value is located.

[0023] And / or, when it is determined that the smoke gathering plate is obstructing the user's view and the current opening angle of the main smoke plate is less than the maximum opening angle, the auxiliary smoke plate is controlled to flip relative to the main smoke plate in the direction toward the smoke collection hood and the opening angle of the main smoke plate is increased.

[0024] As an optional technical solution for control, when the current cooking state is a high smoke cooking state, if the user's height is less than the preset height, the main smoke plate is controlled to open to a second preset angle, and the auxiliary smoke plate is controlled to flip outward relative to the main smoke plate.

[0025] And / or, when the current cooking state is high smoke cooking state, if the user's height is greater than or equal to the preset height, control the main smoke plate to open to the third preset angle, and control the auxiliary smoke plate to flip inward relative to the main smoke plate.

[0026] The beneficial effects of this invention are:

[0027] The range hood provided by this invention, by setting a rotating cavity assembly that can rotate outward relative to the smoke collection hood and a smoke gathering plate that can rotate relative to the smoke collection hood, allows the smoke gathering plate and the rotating cavity assembly to form a smoke gathering space when both rotate outward relative to the smoke collection hood. This smoke gathering space is closer to the smoke-generating position, improving the smoke gathering effect. Simultaneously, because the linkage drive mechanism only drives the smoke gathering plate to rotate without driving the rotating cavity assembly when the smoke gathering plate opens at a less than a first preset opening angle, energy consumption is reduced and costs are lowered when the smoke gathering plate opens at a small angle. When the smoke gathering plate opens at a greater than the first preset opening angle, the linkage between the smoke gathering plate and the rotating cavity assembly is activated, effectively reducing drive costs and control difficulty. Furthermore, because the smoke inlet is located at the rotating cavity assembly, the opening angle of the smoke gathering plate does not affect the size of the smoke inlet, ensuring effective smoke extraction and improving the range hood's smoke gathering capacity.

[0028] The range hood provided by this invention, by adopting the above-mentioned range hood, can improve the oil fume extraction effect of the range hood while reducing the driving cost of the range hood and saving energy.

[0029] The control method for a range hood provided by this invention controls the opening angle of the smoke collection plate to be less than or equal to a first preset angle when the current cooking state is a low smoke cooking state. This ensures the smoke extraction effect of the range hood while reducing the driving cost of the range hood and saving energy. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the range hood provided in Embodiment 1 of the present invention when the smoke collection device is in the closed state;

[0031] Figure 2 This is a schematic diagram of the range hood provided in Embodiment 1 of the present invention when the smoke collection device is in the open state;

[0032] Figure 3 This is a partial structural diagram of the smoke collection device provided in Embodiment 1 of the present invention in the closed state;

[0033] Figure 4 This is a partial structural side view of the smoke collection device provided in Embodiment 1 of the present invention in the closed state;

[0034] Figure 5 This is a partial structural side view of the smoke collection device provided in Embodiment 1 of the present invention in the open state;

[0035] Figure 6 This is a schematic diagram of the smoke collection device provided in Embodiment 1 of the present invention in the open state;

[0036] Figure 7 for Figure 6 A magnified view of a section at point I;

[0037] Figure 8 This is a schematic diagram of the flipping linkage mechanism provided in Embodiment 1 of the present invention;

[0038] Figure 9 This is a partial structural diagram of the smoke collection device provided in Embodiment 2 of the present invention in the closed state;

[0039] Figure 10 This is a partial structural side view of the smoke collection device provided in Embodiment 2 of the present invention in the closed state;

[0040] Figure 11 This is a partial structural side view of the smoke collection device provided in Embodiment 2 of the present invention in the open state;

[0041] Figure 12 This is a side view of the structure of the smoke collection device provided in Embodiment 3 of the present invention in the open state, with the auxiliary smoke plate flush with the main smoke plate;

[0042] Figure 13 This is a side view of the structure of the smoke-gathering device provided in Embodiment 3 of the present invention in the open state, with the auxiliary smoke plate flipped outward relative to the main smoke plate;

[0043] Figure 14 This is a side view of the structure of the smoke-gathering device provided in Embodiment 3 of the present invention in the open state and when the auxiliary smoke plate is flipped inward relative to the main smoke plate;

[0044] Figure 15 A flowchart of the control method provided in Embodiment 4 of the present invention;

[0045] Figure 16 A flowchart of the control method provided in Embodiment 5 of the present invention;

[0046] Figure 17 A flowchart of the control method provided in Embodiment Six of the present invention;

[0047] Figure 18 A flowchart of the control method provided in Embodiment 7 of the present invention;

[0048] Figure 19 This is a schematic diagram of the range hood provided in Embodiment 7 of the present invention in the user's usage state;

[0049] Figure 20 A flowchart of the control method provided in Embodiment 8 of the present invention;

[0050] Figure 21 A flowchart of the control method provided in Embodiment Nine of the present invention.

[0051] In the picture:

[0052] 100. Smoke collection device; 200. Bellows assembly; 300. Oil cup; 400. Stovetop; 500. Cooking utensils;

[0053] 1. Flip plate assembly; 11. Smoke collection plate; 111. Main smoke plate; 112. Auxiliary smoke plate; 12. Smoke guide boss; 13. Mounting support;

[0054] 2. Tilting cavity assembly; 21. Inner frame of smoke collection; 211. Side of smoke collection; 2111. Side frame; 2112. Side baffle; 212. Top of smoke collection; 213. Bottom beam; 214. Smoke inlet; 215. Clearance shaft hole; 22. Side slide rail; 23. Connecting hole; 231. Clearance hole; 232. Actuation hole;

[0055] 3. Linkage drive mechanism; 31. Tilting linkage component; 32. Mounting rod; 321. Main rod; 322. Mounting plate; 33. Transmission rod; 34. Support rod; 35. Limiting rod; 36. Connecting assembly; 361. Connecting plate; 362. First shaft; 363. Second shaft; 37. Drive motor; 371. Drive shaft; 372. Protruding shaft; 373. Motor housing;

[0056] 4. Reset component;

[0057] 5. Connecting assembly; 51. Sliding member; 52. First linkage member; 53. First hinge shaft; 54. Second hinge shaft; 55. Guide rail; 56. Second linkage member; 561. First connecting rod; 562. Second connecting rod;

[0058] 6. Smoke hood; 61. Vertical smoke collection section; 611. Back plate; 62. Horizontal smoke collection section;

[0059] 7. Front panel; 8. Panel mounting bracket; 9. Bottom mounting bracket; 10. Fixing bracket. Detailed Implementation

[0060] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0061] 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, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 based on the specific circumstances.

[0062] In this invention, unless otherwise explicitly 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 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 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.

[0063] In the description of this embodiment, the terms "upper," "lower," "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.

[0064] Example 1

[0065] This embodiment provides a range hood that can improve the smoke extraction effect, reduce the operating cost, and enhance the user experience while achieving a slimmer and lighter design.

[0066] like Figures 1 to 3 As shown, the range hood includes a smoke collection device 100 and a fan assembly 200. The smoke collection device 100 has a smoke collection chamber and a front opening communicating with the smoke collection chamber. The top of the smoke collection device 100 has a smoke outlet communicating with the smoke collection chamber. The fan assembly 200 is installed on the top of the smoke collection device 100. The fan assembly 200 includes a fan box and a fan installed inside the fan box. The fan's air inlet communicates with the smoke outlet, and a check valve is installed at the fan's air outlet. The outlet end of the check valve is connected to an exhaust pipe, which extends outside the fan box to discharge the fumes into the external environment.

[0067] The smoke collection device 100 includes a smoke collection hood 6, a flipping chamber assembly 2, a flap assembly 1, and a linkage drive mechanism 3. The smoke collection hood 6 has a smoke collection chamber and a front opening. The lower end of the flipping chamber assembly 2 is movably installed inside the smoke collection hood 6, and the upper end can flip outward through the front opening. The flipping chamber assembly 2 has a smoke inlet 214 communicating with the smoke collection chamber. The flap assembly 1 includes a smoke collection plate 11, which is rotatably installed on the front side of the smoke collection hood 6 to open or close the smoke inlet 214 and the front opening. The linkage drive mechanism 3 is configured to drive only the smoke collection plate 11 to rotate when the opening angle of the smoke collection plate 11 is less than or equal to a first preset opening angle, and to drive the smoke collection plate 11 and the flipping chamber assembly 2 to open outward or close inward in conjunction when the opening angle of the smoke collection plate 11 is greater than the first preset opening angle.

[0068] The smoke-collecting device 100 and range hood provided in this embodiment, by setting a rotating cavity assembly 2 that can rotate outward relative to the smoke collection hood 6 and a smoke-collecting plate 11 that can rotate relative to the smoke collection hood 6, ensure that when both the smoke-collecting plate 11 and the rotating cavity assembly 2 rotate outward relative to the smoke collection hood 6, they can close together to form a smoke-collecting space, which is closer to the smoke-generating position, thus improving the smoke-collecting effect. Simultaneously, because the linkage drive mechanism 3 only drives the smoke-collecting plate 11 when the opening angle of the smoke-collecting plate 11 is less than the first preset opening angle,... The rotation without driving the flipping cavity assembly 2 reduces energy consumption and lowers costs when the smoke collecting plate 11 is opened at a small angle. When the opening angle of the smoke collecting plate 11 is greater than the first preset opening angle, the smoke collecting plate 11 and the flipping cavity assembly 2 are driven to move together, which can effectively reduce driving costs and control difficulty. Furthermore, since the smoke inlet 214 is located at the flipping cavity assembly 2, the opening angle of the smoke collecting plate 11 will not affect the size of the smoke inlet 214, ensuring the smoke extraction effect and improving the smoke collecting capacity of the smoke collecting device 100.

[0069] In this embodiment, the smoke collection device 100 has a closed state, a first open state, and a second open state. When the smoke collection device 100 is in the closed state, the flipping cavity assembly 2 is located inside the smoke collection chamber, and the smoke collection plate 11 simultaneously closes the front opening and the smoke inlet 214 to ensure the overall aesthetic appearance of the smoke collection device 100 and facilitate the cleaning of the smoke collection device 100. When the smoke collection device 100 is in the first open state, the flipping cavity assembly 2 is located inside the smoke collection chamber, and the smoke collection plate 11 flips forward relative to the smoke collection hood 6, with the smoke collection plate 11 and the front of the smoke collection hood 6 enclosing each other to form a smoke collection space. When the smoke collection device 100 is in the second open state, the upper end of the flipping cavity assembly 2 extends out of the front opening, and the flipping cavity assembly 2 and the smoke collection plate 11 cooperate to form a smoke collection space.

[0070] To reduce the overall thickness of the smoke collection hood 6, the smoke collection hood 6 has a vertical smoke collection section 61 and a horizontal smoke collection section 62 connected to the top of the vertical smoke collection section 61. The horizontal smoke collection section 62 extends forward from the top of the vertical smoke collection section 61, making the smoke collection hood 6 have a "7" shaped structure. This results in a smaller overall thickness of the smoke collection hood 6, while the top has sufficient width for installing the bellows. At the same time, the horizontal smoke collection section 62 can prevent the oil fumes from escaping upwards, improving the smoke collection effect. The front opening is located on the front side of the vertical smoke collection section 61. The front panel 7 is located on the front side of the smoke collection hood 6. The front panel 7 is located above the front opening, and when the smoke collection device 100 is in the closed state, the front side of the smoke collection plate 11 is located below the front panel 7. The front side of the smoke collection device 100 and the front side of the front panel 7 are arranged side by side vertically and are roughly flush.

[0071] To collect oil within the smoke collection chamber, the range hood also includes an oil cup 300, which is installed at the bottom of the smoke collection hood 6. An oil drain port is located at the bottom of the smoke collection chamber, directly opposite the upper opening of the oil cup 300. It is worth noting that the structures of the oil cup 300 and the fan assembly 200 can be designed with reference to existing technology; this is not the focus of this invention and will not be elaborated upon further.

[0072] To simplify the structure of the smoke collection device 100, in this embodiment, the lower end of the flipping cavity assembly 2 is rotatably mounted inside the smoke collection chamber. This simplifies the assembly and disassembly of the flipping cavity assembly 2 on the smoke collection hood 6 and reduces the space occupied by the flipping cavity assembly 2 within the smoke collection hood 6. Specifically, bottom mounting seats 9 are provided on both the left and right sides of the bottom of the smoke collection chamber and the lower end of the flipping cavity assembly 2 is rotatably mounted on the bottom mounting seats 9.

[0073] In other embodiments, the lower end of the flipping cavity assembly 2 can rotate relative to the smoke hood 6 while sliding relative to the smoke hood 6 in the front-back direction or in the height direction of the smoke hood 6.

[0074] like Figure 4 and 5 As shown in the figure, the side of the flipping cavity assembly 2 is provided with a connecting hole 23. The linkage drive mechanism 3 includes a flipping linkage 31, a drive motor 37 and a transmission assembly. The transmission assembly is connected to the flipping linkage 31 and the smoke collecting plate 11. While the drive motor 37 drives the smoke collecting plate 11 to rotate through the transmission assembly, it actuates the flipping linkage 31 to slide in the connecting hole 23, so as to drive the flipping cavity assembly 2 to rotate.

[0075] This configuration, through the shape of the connecting hole 23 and the cooperation between the flipping linkage 31 and the connecting hole 23, ensures that when the opening angle of the smoke gathering plate 11 is less than or equal to the first preset opening angle, the sliding of the flipping linkage 31 within the connecting hole 23 will not actuate the flipping cavity assembly 2. However, when the opening angle of the smoke gathering plate 11 is greater than the first preset opening angle, the sliding of the flipping linkage 31 within the connecting hole 23 can actuate the flipping cavity assembly 2. This simplifies the cooperation structure between the flipping cavity assembly 2 and the flipping linkage assembly, reducing the difficulty of structural design. At the same time, the actuation of the flipping cavity assembly 2 through the cooperation of the connecting hole 23 and the flipping linkage 31 not only enables the opening control of the flipping cavity assembly 2 but also facilitates the closing control of the flipping cavity assembly 2, ensuring the smooth opening and closing of the flipping cavity assembly 2.

[0076] In other embodiments, a flexible component can be used to connect the smoke-gathering plate 11 and the flipping cavity assembly 2, or the linkage drive mechanism 3 and the flipping cavity assembly 2. When the opening angle of the smoke-gathering plate 11 is less than a first preset opening angle, the flexible component is in a relaxed state, so that the action of the linkage drive mechanism 3 or the smoke-gathering plate 11 is not transmitted to the flipping cavity assembly 2. When the opening angle of the smoke-gathering plate 11 is greater than the first preset angle, the flexible component is in a taut state, and the linkage drive mechanism 3 transmits driving force to the flipping cavity assembly 2 through the flexible component, causing the flipping cavity assembly 2 to flip open. In this configuration, a reset elastic component can be provided to achieve the closing and reset of the flipping cavity assembly 2.

[0077] Specifically, the connecting hole 23 includes a clearance hole 231 and an actuation hole 232 connected to the front end of the clearance hole 231. The shape of the clearance hole 231 is consistent with the running trajectory of the flipping linkage 31 when the smoke collecting plate 11 is opened from the closed state to the first preset opening angle. When the opening angle of the smoke collecting plate 11 is less than the first preset opening angle, the flipping linkage 31 slides along the clearance hole 231, so that the sliding of the flipping linkage 31 in the connecting hole 23 will not drive the flipping cavity assembly 2 to move. When the opening angle of the smoke collecting plate 11 is greater than the first preset angle, the flipping linkage 31 slides in the actuation hole 232 to actuate the flipping cavity assembly 2 to rotate.

[0078] While the drive motor 37 drives the smoke collecting plate 11 to flip forward through the transmission component, it also drives the flipping linkage 31 to move forward. As a result, the forward movement of the flipping linkage 31 drives the upper end of the flipping cavity assembly 2 to move forward, thereby causing the upper end of the flipping cavity assembly to flip forward. While the drive motor 37 drives the smoke collecting plate 11 to flip backward through the transmission component, it also drives the flipping linkage 31 to move backward. As a result, the backward movement of the flipping linkage 31 drives the upper end of the flipping cavity assembly 2 to move backward, thereby causing the flipping cavity assembly 2 to close and reset backward.

[0079] In this embodiment, the avoidance hole 231 is an arc-shaped hole with its opening facing the rotation axis of the smoke collecting plate 11, and the actuation hole 232 is an elongated hole extending along the height direction of the flipping cavity assembly 2. This helps to reduce the difficulty of opening the connection hole 23, thereby reducing the size requirements of the flipping cavity assembly 2 in the front-back direction for the setting of the connection hole 23 and improving the structural compactness.

[0080] Since the movement of the flipping linkage 31 within the clearance hole 231 does not cause the flipping cavity assembly 2 to move when the smoke collecting plate 11 flips to close, the smoke collecting device 100 also includes a reset member 4 to ensure accurate and reliable reset of the flipping cavity assembly 2. The reset member 4 is used to apply a backward flipping elastic force to the flipping cavity assembly 2 to prevent the flipping cavity assembly 2 from not closing completely. Further, the reset member 4 is a spring extending in the front-to-back direction. The rear end of the spring is installed on the back plate 611 or the bottom of the smoke collecting cavity, and the front end of the spring is connected to the flipping cavity assembly 2. To ensure reset reliability, multiple reset members 4 can be spaced apart in the left-to-right direction.

[0081] like Figures 3 to 6 As shown, the tilting cavity assembly 2 includes two smoke-gathering sides 211 arranged opposite to each other and spaced apart in the left-right direction, and a smoke-gathering top 212 connected between the top ends of the two smoke-gathering sides 211. The smoke-gathering sides 211 and the smoke-gathering top 212 together form a smoke inlet 214. In one embodiment, a bottom beam 213 is connected between the lower ends of the two smoke-gathering sides 211 to enhance the overall structural stability of the tilting cavity assembly 2. In other embodiments, the bottom beam 213 may not be provided.

[0082] The smoke-gathering side portion 211 includes a side frame portion 2111 and a side baffle portion 2112 that is connected to the rear side of the side frame portion 2111 and extends rearward. The thickness of the side frame portion 2111 in the left-right direction is greater than the thickness of the side baffle portion 2112 in the left-right direction. The connecting hole 23 is opened in the side frame portion 2111, which helps to ensure the overall structural strength and rigidity of the flip cavity assembly 2 at the location where the connecting hole 23 is opened, and reduces the probability of deformation of the flip cavity assembly 2. At the same time, the side baffle portion 2112 can increase the depth of the smoke inlet 214, improve the smoke gathering effect, reduce the probability of lateral escape of oil fumes, and reduce the overall weight of the flip cavity assembly 2, thereby reducing the overall weight of the range hood.

[0083] In this embodiment, the rotating linkage 31 has a rod-like structure extending in the left-right direction, which facilitates the sliding arrangement of the rotating linkage 31 within the connecting hole 23 and also facilitates the connection between the rotating linkage 31 and the transmission assembly. The connecting hole 23 extends through both sides of the smoke-collecting side 211, which reduces the processing difficulty of the connecting hole 23 and improves the ease of assembly and disassembly of the rotating linkage 31 within the connecting hole 23.

[0084] like Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, in this embodiment, the transmission assembly includes a mounting rod 32 and a transmission rod 33. The first end of the mounting rod 32 is connected to the upper end of the smoke-collecting plate 11, and the second end is hinged to the smoke-collecting hood 6. The drive shaft 371 of the drive motor 37 is connected to the mounting rod 32. One end of the transmission rod 33 is hinged to the motor housing 373 of the drive motor 37, and the other end is connected to the flipping linkage 31. When the drive shaft 371 of the drive motor 37 rotates, it drives the mounting rod 32 to rotate, thereby causing the smoke-collecting plate 11 to rotate relative to the smoke-collecting hood 6. Since the drive shaft 371 of the drive motor 37 is connected to the mounting rod 32, the movement of the mounting rod 32 causes the entire drive motor 37 to move accordingly, thereby causing the drive motor 37 to drive the transmission rod 33 to move, which in turn drives the flipping linkage 31 to move.

[0085] That is, the above-mentioned configuration enables the drive motor 37 to move with the smoke-collecting plate 11 while the flipping cavity assembly 2 and the smoke-collecting plate 11 are linked. The drive force of the drive motor 37 to the smoke-collecting plate 11 is transmitted by the mounting rod 32, and the transmission connection between the drive motor 37 and the flipping linkage 31 is achieved by the transmission rod 33. The relative position of the rotation axis of the drive motor 37 with respect to the smoke-collecting plate 11 and the upper end of the flipping cavity assembly 2 can be set, so that the drive motor 37 can achieve the linkage drive of the smoke-collecting plate 11 and the flipping cavity assembly 2 with a smaller driving force, while also reducing the probability of interference between the smoke-collecting plate 11 and the flipping cavity assembly 2. Furthermore, since the drive motor 37 moves with the smoke-collecting plate 11, the opening stroke of the smoke-collecting plate 11 can be increased while the space required for the drive motor 37 to move can be reduced, thereby reducing the overall footprint of the linkage drive mechanism 3, which is conducive to achieving a slimmer design of the smoke-collecting device 100 and the range hood. Since the drive shaft 371 of the drive motor 37 is connected to the mounting rod 32, the driving force of the drive motor 37 can directly overcome the gravity of the smoke collecting plate 11 and drive the smoke collecting plate 11 to rotate. The flipping cavity assembly 2 can flip under the assistance of gravity, saving the driving force of the drive motor 37 and making it easier to control the driving stroke of the smoke collecting plate 11.

[0086] In other embodiments, the drive motor 37 can be mounted on the smoke collection hood 6, and the transmission assembly includes a first linkage group and a second linkage group. The first linkage group is connected between the drive motor 37 and the smoke collection plate 11, so that the rotation of the drive motor 37 drives the smoke collection plate 11 to rotate through the first linkage group; the second linkage group is connected between the smoke collection plate 11 and the flipping linkage 31, so that the flipping of the smoke collection plate 11 drives the flipping linkage 31 to move back and forth.

[0087] The first end of the mounting rod 32 is fixedly connected to the back side of the smoke collecting plate 11, and the second end of the mounting rod 32 is hinged to the inside of the smoke collecting hood 6. The mounting rod 32 is at least partially a bent rod structure that bends inward and backward. The upper edge of the front opening of the smoke collecting hood 6 is located in the concave space of the arc-shaped structure, which facilitates the connection between the mounting rod 32 and the smoke collecting plate 11 and the smoke collecting hood 6. Furthermore, a plate mounting seat 8 is installed on the front cavity wall of the smoke collecting chamber, and a mounting support 13 is provided on the back side of the smoke collecting plate 11. The first end of the mounting rod 32 is connected to the mounting support 13, and the second end is hinged to the plate mounting seat 8.

[0088] The mounting rod 32 includes a main rod 321 and a mounting plate 322. The main rod 321 is at least partially bent backward, with its lower end connected to the smoke collection plate 11 and its upper end connected to the smoke hood 6. The mounting plate 322 is detachably connected to the main rod 321, and the drive shaft 371 is connected to the mounting plate 322. By providing a detachably connected main rod 321 and mounting plate 322, it is convenient to set and adjust the connection position of the drive motor 37 on the mounting rod 32, thereby improving the convenience and reliability of the connection between the mounting rod 32 and the drive motor 37. In other embodiments, the main rod 321 and the mounting plate 322 may also be integrally formed.

[0089] Specifically, the mounting plate 322 is connected to the rear bend of the mounting rod 32. In the front-to-back direction, the drive shaft 371 is spaced at the upper rear side of the main rod 321. In the vertical direction, the drive shaft 371 is located between the two ends of the main rod 321. That is, the rotation axis of the mounting rod 32, the connection position between the mounting plate 322 and the main rod 321, and the drive shaft 371 are arranged sequentially from front to back.

[0090] The drive motor 37 is higher than the upper end of the flipping cavity assembly 2. The upper end of the transmission rod 33 is connected to the drive motor 37. The transmission rod 33 extends downward at an angle from top to bottom and its front end is connected to the flipping linkage 31. Specifically, the motor housing 373 of the drive motor 37 has a protruding convex shaft 372, and the upper end of the transmission rod 33 is rotatably sleeved on the convex shaft 372. The convex shaft 372 and the drive shaft 371 are respectively protruding on opposite sides of the motor housing 373. Preferably, the axes of the convex shaft 372 and the drive shaft 371 are parallel and spaced apart to avoid dead points during movement and improve the driving reliability of the drive motor 37 on the smoke collecting plate 11 and the flipping cavity assembly 2. Further, when the smoke collecting device 100 is in the closed state, in the front-rear direction, the convex shaft 372 is located in front of the drive shaft 371, and the transmission rod 33 is located entirely in front of the drive motor 37.

[0091] When the drive shaft 371 of the drive motor 37 rotates, the lower end of the main rod 321 flips forward under the drive of the drive motor 37, and the drive motor 37 moves downward as a whole. This causes the upper end of the transmission rod 33 to move downward, driving the lower end of the drive motor 37 to move forward, which in turn drives the upper end of the flipping cavity assembly 2 to move forward. When the drive shaft 371 of the drive motor 37 rotates in the opposite direction, the drive shaft 371 drives the lower end of the main rod 321 to move backward, thereby causing the smoke collecting plate 11 to close. At the same time, the drive motor 37 rises as a whole, causing the upper end of the transmission rod 33 to rise, while the lower end of the transmission rod 33 moves backward, thereby driving the flipping linkage 31 to move backward, causing the upper end of the flipping cavity assembly 2 to move backward and reset. This arrangement saves more driving force of the drive motor 37, and when the smoke collecting plate 11 flips open, the distance between the flipping cavity assembly 2 and the upper end of the smoke collecting plate 11 can be reduced, improving the smoke collecting effect. In other embodiments, the transmission rod 33 may also be a bent rod structure or other forms of rod-shaped structure.

[0092] To further improve the operational stability of the tilting chamber assembly 2, the transmission assembly also includes a support rod 34. The lower end of the support rod 34 is connected to the tilting linkage 31, and the support rod 34 is connected to the smoke hood 6. This arrangement allows the upper end of the tilting chamber assembly 2 to be supported on the smoke hood 6 via the support rod 34, avoiding the problem of excessive stress on the drive motor 37 caused by the upper end of the tilting chamber assembly 2 being suspended and supported solely by the transmission rod 33, thus improving the stability and reliability of the tilting chamber assembly 2 and extending the service life of the drive motor 37.

[0093] Specifically, a fixed base 10 is installed on the inner side of the smoke hood 6. The upper end of the support rod 34 is hinged to the fixed base 10, and the lower end is connected to the flipping linkage 31. The support rod 34 is preferably a U-shaped structure with the opening facing forward, which helps to avoid interference between the support rod 34 and the smoke hood 6. The lower end of the support rod 34 is sleeved on the flipping linkage 31.

[0094] In this embodiment, the linkage drive mechanism 3 further includes a limiting rod 35. The first end of the limiting rod 35 is connected to the mounting rod 32, and the second end of the limiting rod 35 is connected to the flipping linkage 31. The limiting rod 35 restricts the maximum flipping angle of the flipping cavity assembly 2 and the smoke collecting plate 11. The hinge axis of the second end of the limiting rod 35 is parallel to and spaced apart from the hinge axis of the upper end of the transmission rod 33. When the drive motor 37 drives the flipping linkage 31 to move, the movement of the flipping linkage 31 causes the limiting rod 35 to rotate relative to the mounting rod 32. Since the limiting rod 35 is hinged to the mounting rod 32, the rotation stroke of the flipping cavity assembly 2 is restricted by the limiting rod 35. Thus, the setting of the limiting rod 35 restricts the movement stroke of the flipping cavity assembly 2, thereby limiting the maximum opening angle of the smoke collecting plate 11 relative to the smoke collection hood 6.

[0095] The lower end of the limiting rod 35 is sleeved on the flipping linkage 31 to improve connection convenience. The limiting rod 35 is preferably an arc-shaped structure with the opening facing forward, which is simple in structure and easy to install. However, it is understood that the shape of the limiting rod 35 can be specifically limited according to the maximum stroke required for the smoke collector 11 to open. Furthermore, one limiting rod 35 is provided on each of the left and right sides of the mounting rod 32 to ensure the limiting effect and stability, and to reduce the probability of the limiting rod 35 being damaged by force.

[0096] When the smoke collecting plate 11 closes the smoke inlet 214, the upper end of the limiting rod 35, the upper end of the transmission rod 33, and the drive shaft 371 are sequentially spaced from front to back in the front-to-back direction, thereby improving the reliability of linkage and limiting. That is, when the smoke collecting plate 11 closes the smoke inlet 214, the rotation axis of the smoke collecting plate 11, the hinge axis of the limiting rod 35 and the mounting rod 32, the first end of the transmission rod 33, and the axis of the drive shaft 371 are sequentially spaced parallel from front to back in the front-to-back direction. Furthermore, in the vertical direction, the axis of the drive shaft 371 is located between the two ends of the limiting rod 35. Thus, while keeping the relative position of the drive motor 37 of the flipping linkage 31 unchanged, the length of the limiting rod 35 is increased, thereby avoiding the problem that the maximum flipping angle of the flipping cavity assembly 2 is small due to the limiting rod 35 being too short.

[0097] One linkage drive mechanism 3 is provided on each of the left and right sides of the tilting cavity assembly 2. One linkage drive mechanism 3 is equipped with a drive motor 37, and the mounting rod 32 and transmission rod 33 of the other linkage drive mechanism 3 are connected by a connecting assembly 36. This ensures that both ends of the smoke collecting plate 11 are supported on the smoke collecting hood 6 by the mounting rod 32, and both ends of the tilting cavity assembly 2 are supported on the smoke collecting hood 6 by the connecting shaft. This ensures the stability of the smoke collecting plate 11 and reduces the number of drive motors 37, thus lowering the drive cost. In other embodiments, the mounting rods 32 and transmission rods 33 in both linkage drive mechanisms 3 can be connected by drive motors 37.

[0098] In this embodiment, the connecting assembly 36 includes a connecting plate 361 and a first shaft portion 362 and a second shaft portion 363 protruding from opposite sides of the connecting plate 361. The first shaft portion 362 is connected to the mounting rod 32, and the second shaft portion 363 is hinged to the transmission rod 33. The drive shaft 371 is connected to the mounting rod 32. The first shaft portion 362 and the drive shaft 371 are coaxially aligned, and the second shaft portion 363 is coaxially aligned with the hinge axis of the motor housing 373. This allows the two sets of linkage drive mechanisms 3 to operate synchronously, ensuring the stability of the movement of the smoke collecting plate 11 and the flipping cavity assembly 2 at both ends.

[0099] In this embodiment, a side baffle is provided in the smoke collection chamber. One side baffle is provided on each of the left and right sides of the front opening. The drive motor 37 and the transmission assembly are located on the side of the side baffle away from the flipping chamber assembly 2, so as to prevent the oil fumes from flowing to the drive motor 37 and the transmission assembly.

[0100] like Figure 3 and Figure 5 As shown, in order to improve the smoke collection and smoke guiding effect when the smoke collection plate 11 is opened, a smoke guiding boss 12 is provided on the rear side of the smoke collection plate 11. The smoke guiding boss 12 extends in the left and right direction, and a smoke guiding surface is formed on the side of the smoke guiding boss 12 away from the smoke collection plate 11. When the smoke collecting plate 11 is in the closed state, it closes the smoke inlet 214, and the smoke guide protrusion 12 is located in the smoke inlet 214 of the flipping cavity assembly 2 to avoid interference between the smoke guide protrusion 12 and the flipping cavity assembly 2, and also to avoid the smoke guide protrusion 12 occupying additional space in the smoke collection cavity. When the smoke collecting plate 11 is in the open state, the upper end of the smoke guide protrusion 12 is close to the upper side of the smoke inlet 214, and the smoke guide surface of the smoke guide protrusion 12 guides the oil fumes to flow towards the smoke inlet 214 to improve the smoke collection and oil guiding effect. At the same time, the setting of the smoke guide protrusion 12 can reduce the probability of oil fumes escaping upward through the gap between the upper end of the flipping cavity assembly 2 and the smoke collecting plate 11, further improving the smoke collection effect. Only one smoke guide protrusion 12 can be provided, or multiple protrusions can be provided along the left and right sides.

[0101] Example 2

[0102] This embodiment provides a smoke collection device 100 and a range hood. The smoke collection device 100 provided in this embodiment is a further improvement based on the smoke collection device 100 in Embodiment 1. This embodiment will not repeat the same structure as Embodiment 1.

[0103] like Figures 9 to 11 As shown, in this embodiment, the flipping cavity assembly 2 includes an outer mounting frame and an inner smoke collecting frame 21. The lower end of the outer mounting frame is rotatably mounted inside the smoke collecting hood 6. The inner smoke collecting frame 21 can be slidably mounted on the outer mounting frame along the height direction of the outer mounting frame, so that the upper end of the inner smoke collecting frame 21 is close to or away from the smoke collecting plate 11. The inner smoke collecting frame 21 has a smoke inlet 214, and the linkage drive mechanism 3 is connected to the outer mounting frame.

[0104] The smoke-collecting device 100 provided in this embodiment allows the inner smoke-collecting frame 21 to slide relative to the mounting outer frame to approach the smoke-collecting plate 11. This enables the inner smoke-collecting frame 21 to slide closer to the smoke-collecting plate 11 when the smoke-collecting plate 11 is open relative to the smoke hood 6, thereby increasing the size of the smoke-collecting space and improving the smoke-collecting effect. At the same time, this arrangement avoids the overall height of the flipping cavity assembly 2 being too high when the smoke-collecting device 100 is in the closed state, reducing the opening height requirement for the front opening. Furthermore, the inner smoke-collecting frame 21 is slidably disposed inside the mounting outer frame, allowing the inner smoke-collecting frame 21 and the mounting outer frame to flip outward as a whole, while the inner smoke-collecting frame 21 can slide relative to the mounting outer frame along the height direction to approach or move away from the smoke-collecting plate 11. This achieves a certain degree of decoupling of the connection structure between sliding and rotational movements, improving the operational reliability of the flipping cavity assembly 2.

[0105] In this embodiment, a connecting component 5 is connected between the smoke collecting plate 11 and the inner smoke collecting frame 21. The connecting component 5 is configured to pull the upper end of the inner smoke collecting frame 21 close to the smoke collecting plate 11 when the smoke collecting plate 11 is flipped open relative to the smoke collecting hood 6.

[0106] That is, in this embodiment, the opening of the smoke-collecting plate 11 is achieved by the connecting component 5 driving the inner smoke-collecting frame 21 to move automatically upward, realizing the linkage action of opening the inner smoke-collecting frame 21 and the smoke-collecting plate 11. No additional driving structure is needed for the sliding of the inner smoke-collecting frame 21, reducing costs and simplifying the overall control of the smoke-collecting device 100. In other embodiments, a sliding drive component can be provided, which drives the inner smoke-collecting frame 21 to slide relative to the mounting outer frame.

[0107] In this embodiment, the mounting frame includes two opposing and spaced-apart side slide rails 22. One side slide rail 22 is provided on each of the left and right sides of the inner smoke-collecting frame 21, and the lower end of each side slide rail 22 is rotatably connected to the smoke-collecting hood 6. The extending direction of the side slide rails 22 is consistent with the height direction of the inner smoke-collecting frame 21. The left and right sides of the inner smoke-collecting frame 21 are slidably mounted on the two side slide rails 22 respectively. This simplifies the structure of the flipping cavity assembly 2 and reduces its weight.

[0108] Furthermore, the side slide rail 22 is provided with a connecting hole 23, and the left and right sides of the smoke collection inner frame 21 are provided with clearance shaft holes 215, the extending direction of the clearance shaft holes 215 being consistent with the extending direction of the connecting hole 23. The connecting hole 23 and the clearance shaft hole 215 are at least partially aligned, and the flipping linkage 31 passes through the clearance shaft hole 215. The setting of the clearance shaft hole 215 can reduce the matching requirements between the flipping cavity assembly 2 and the flipping linkage 31, and avoid interference between the structures.

[0109] In this embodiment, the connecting component 5 includes a sliding member 51 and a first linkage member 52. The sliding member 51 is slidably mounted on the smoke collecting plate 11 along the height direction of the smoke collecting plate 11. The two ends of the first linkage member 52 are respectively hinged to the upper ends of the sliding member 51 and the flipping cavity component 2.

[0110] That is, when the smoke collecting plate 11 is flipped open, the inner smoke collecting frame 21 and the side slide rail 22 are driven to rotate by the flipping linkage 31. Since the inner smoke collecting frame 21 and the sliding member 51 are connected by the first linkage 52, the sliding member 51 slides down along the smoke collecting plate 11 when the inner smoke collecting frame 21 and the smoke collecting plate 11 rotate, thereby driving the inner smoke collecting frame 21 to slide up relative to the side slide rail 22 and approach the smoke collecting plate 11, thereby increasing the depth of the smoke collecting space and improving the smoke collecting effect.

[0111] In this embodiment, the top of the inner smoke-collecting frame 21 is hinged to the first linkage member 52, which facilitates control of the position of the inner smoke-collecting frame 21 relative to the smoke-collecting plate 11, while avoiding interference between the first linkage member 52 and the smoke guide protrusion 12 on the back side of the smoke-collecting plate 11. In other embodiments, the inner smoke-collecting frame 21 may be hinged to the first linkage member 52 at other locations. Furthermore, when the smoke-collecting plate 11 is in the closed state, the first linkage member 52 extends straight from front to back or extends obliquely upward from front to back. Thus, when the sliding member 51 slides downward relative to the smoke-collecting plate 11, it pulls the inner smoke-collecting frame 21 upward and closer to the smoke-collecting plate 11.

[0112] To improve the sliding convenience of the slider 51, in this embodiment, a guide rail 55 is installed on the back side of the smoke gathering plate 11. The guide rail 55 extends along the height direction of the smoke gathering plate 11, and a guide groove is provided on the guide rail 55. The slider 51 is slidably installed in the guide groove to ensure the sliding stability and reliability of the slider 51.

[0113] To improve the ease of connection between the first linkage 52 and the inner smoke-collecting frame 21 and the sliding member 51, a first hinge shaft 53 is connected to the inner smoke-collecting frame 21, and a second hinge shaft 54 ​​is connected to the sliding member 51. The two ends of the first linkage 52 are respectively fitted onto the first hinge shaft 53 and the second hinge shaft 54. The first hinge shaft 53 and the second hinge shaft 54 ​​can be, but are not limited to, pins or other structures capable of hinged connection of the first linkage 52.

[0114] In this embodiment, the inner smoke collection frame 21 includes two smoke collection side portions 211 that are arranged opposite to each other and spaced apart in the left-right direction, and a smoke collection top portion 212 connected between the top ends of the two smoke collection side portions 211. The smoke collection side portions 211 have a rearwardly extending side baffle portion 2112, and the side baffle portion 2112 extends rearwardly out of the side slide rail 22 to prevent the oil fumes from flowing to the side slide rail 22 and causing the side slide rail 22 to be covered with a lot of oil fumes. This prevents the side frame portion 2111 and the side slide rail 22 from sticking together and affecting the sliding of the inner smoke collection frame 21, thereby improving the smoothness of the sliding of the inner smoke collection frame 21.

[0115] To ensure the stability and smoothness of the movement of the inner smoke collection frame 21, at least two connecting components 5 are provided at intervals along the left and right directions to ensure the stability of the inner smoke collection frame 21 under stress.

[0116] Example 3

[0117] This embodiment provides a smoke collection device 100 and a range hood including the smoke collection device 100. The smoke collection device 100 provided in this embodiment is basically the same as the smoke collection device 100 in embodiment 2, with only some differences in the settings. This embodiment will not describe the same structure as embodiment 2 again.

[0118] like Figures 12 to 14 As shown, in this embodiment, the smoke collecting plate 11 includes a main smoke plate 111 and an auxiliary smoke plate 112 hinged to the lower end of the main smoke plate 111. The upper end of the main smoke plate 111 is rotatably mounted on the smoke collection hood 6, and the main smoke plate 111 and the auxiliary smoke plate 112 cooperate to close or open the front opening. The linkage drive mechanism 3 is connected between the main smoke plate 111 and the flipping cavity assembly 2.

[0119] That is, in this embodiment, the smoke gathering plate 11 has a flat state in which the main smoke plate 111 and the auxiliary smoke plate 112 are arranged side by side, and a non-flat state in which the auxiliary smoke plate 112 is flipped relative to the main smoke plate 111. When the smoke-gathering plate 11 is in a flat state, it can cooperate to close the smoke inlet 214, and the included angle between the main smoke plate 111 and the auxiliary smoke plate 112 is 180°. When the auxiliary smoke plate 112 flips relative to the main smoke plate 111 in a direction away from the flipping cavity assembly 2, the distance between the auxiliary smoke plate 112 and the inner smoke-gathering frame 21 increases, which can increase the smoke-gathering range and improve the smoke-gathering effect. When the auxiliary smoke plate 112 flips relative to the main smoke plate 111 in a direction toward the flipping cavity assembly 2, it can reduce the maximum distance that the smoke baffle extends forward from the front side of the smoke collection hood 6, thereby preventing the smoke baffle from obstructing the user's view during cooking. When the auxiliary smoke plate 112 flips inward relative to the main smoke plate 111, it can move the front end of the smoke-gathering plate 11 backward, thereby preventing the smoke-gathering plate 11 from obstructing the user's view.

[0120] In this embodiment, the connecting component 5 is connected between the auxiliary smoke plate 112 and the inner smoke collection frame 21, so that when the auxiliary smoke plate 112 flips relative to the main smoke plate 111 in a direction away from the flipping cavity component 2, the upper end of the inner smoke collection frame 21 is driven to approach the main smoke plate 111.

[0121] That is, the auxiliary smoke plate 112 and the inner smoke collecting frame 21 are linked, so that when the flip plate assembly 1 rotates around the first axis, the flipping cavity assembly 2 rotates around the second axis, while the inner smoke collecting frame 21 and the mounting outer frame remain relatively stationary (or the inner smoke collecting frame 21 slides slightly relative to the mounting outer frame); when the auxiliary smoke plate 112 rotates relative to the main smoke plate 111, it drives the inner smoke collecting frame 21 to slide relative to the mounting outer frame, so that the auxiliary smoke plate 112 flips outward and the inner smoke collecting frame 21 approaches the main smoke plate 111 at the same time, effectively increasing the volume of the smoke collecting space, improving the smoke collecting effect, and reducing the difficulty of controlling the smoke collecting mechanism.

[0122] In another embodiment, the connecting component 5 can also be connected between the main smoke plate 111 and the inner smoke collecting frame 21. That is, when the smoke collecting plate 11 rotates around the first axis, the connecting component 5 drives the upper end of the inner smoke collecting frame 21 to approach the main smoke plate 111.

[0123] In another embodiment, the flipping cavity assembly 2 can also adopt the structure in Embodiment 1, that is, the rotation of the auxiliary smoke plate 112 relative to the main smoke plate 111 is separated from the flipping cavity assembly 2. In yet another embodiment, the flipping of the auxiliary smoke plate 112 relative to the main smoke plate 111 and the sliding of the inner smoke collecting frame 21 relative to the mounting outer frame can be controlled separately.

[0124] The connecting component 5 includes a sliding member 51, a driving member, a first linkage member 52, and a second linkage member 56. The first linkage member 52 is connected between the sliding member 51 and the inner smoke collection frame 21, and the second linkage member 56 is connected between the auxiliary smoke plate 112 and the sliding member 51.

[0125] Specifically, when the slider 51 slides downward, the upper end of the smoke-collecting inner frame 21 moves closer to the main smoke plate 111 via the first linkage 52 and the auxiliary smoke plate 112 flips away from the flipping cavity assembly 2 via the second linkage 56. When the slider 51 slides upward, the upper end of the smoke-collecting inner frame 21 moves away from the main smoke plate 111 and the auxiliary smoke plate 112 flips in the direction toward the flipping cavity assembly 2.

[0126] The sliding member 51 is driven to slide by the driving member, and the linkage between the auxiliary smoke plate 112 and the inner smoke collection frame 21 is achieved through the cooperation of the sliding member 51, the first linkage member 52, and the second linkage member 56. This simplifies the structure of the connecting component 5 and reduces the difficulty of setting up the driving member. In other embodiments, the driving member can adopt a linkage assembly or other transmission structure to achieve the linkage between the inner smoke collection frame 21 and the auxiliary smoke plate 112.

[0127] Furthermore, the two ends of the first linkage 52 are hinged to the inner smoke-collecting frame 21 and the sliding member 51, respectively. The specific configuration of the first linkage 52 and the sliding member 51 can be referred to Embodiment 2.

[0128] The second linkage 56 includes a first link 561 and a second link 562. One end of the first link 561 is hinged to the sliding member 51, and the second end of the first link 561 is hinged to the first end of the second link 562. The second end of the second link 562 is hinged to the auxiliary smoke plate 112. This type of second linkage 56 has a simple structure and is easy to install. It is worth noting that the driving member can use a gear and rack structure, a lead screw and nut structure, or other existing transmission structures to drive the sliding member 51 to slide. The driving member can also be a linear drive structure.

[0129] Preferably, at least two connecting components 5 are spaced apart along the left-right direction to improve the stress stability of the inner smoke-collecting frame 21 and the auxiliary smoke plate 112. The specific number and position of the connecting components 5 can be referred to in Embodiment 2.

[0130] Example 4

[0131] This embodiment provides a control method for a range hood, which is applied to the range hood provided in the above embodiment.

[0132] The control method for the range hood provided in this embodiment includes: controlling the opening angle of the smoke collection plate 11 according to the cooking state, and when the current cooking state is a low smoke cooking state, controlling the opening angle of the smoke collection plate 11 to be less than or equal to a first preset opening angle.

[0133] The control method provided in this embodiment indicates that if the current cooking state is a low-smoke cooking state, it means that the amount of oil smoke generated during the current cooking is small. Therefore, it can control the opening angle of the smoke collection plate 11 to be less than or equal to the first preset opening angle, which can reduce costs and save energy while ensuring the oil smoke extraction effect.

[0134] In this embodiment, the control method further includes: real-time detection of the amount of oil fumes, and when the amount of oil fumes detected is less than or equal to a first preset amount of oil fumes, determining that the current cooking state is a low-smoke cooking state.

[0135] By detecting the amount of cooking fumes, it is possible to determine whether the current cooking state is a low-smoke cooking state. The control method is relatively direct, and the judgment structure of the smoke volume is relatively accurate, which can improve the control precision and thus more effectively ensure the smoke extraction effect.

[0136] Specifically, the smoke collection device 100 is equipped with a smoke concentration sensor, which is connected to the controller of the range hood. The smoke concentration sensor can detect the amount of oil smoke in real time. When the detected amount of oil smoke is small, the angle at which the smoke collection plate 11 opens is less than or equal to a first preset angle.

[0137] In another embodiment, the control method includes: acquiring the current cooking mode and determining the current cooking state based on the current cooking mode. In this setting, the user can select a cooking mode, and the controller predicts the amount of oil fumes generated during cooking based on the user-selected cooking mode, thereby controlling the opening size of the smoke collection plate 11. For example, the range hood has a daily mode and a stir-fry mode, etc. When the current cooking mode is the daily mode, it is determined that the amount of oil fumes generated during cooking will be lower than a first preset oil fume amount.

[0138] In another embodiment, the control method includes: acquiring the current heat level and determining the current cooking state based on the current heat level. That is, by detecting the current heat level of the stove, the potential amount of oil fumes can be predicted. For example, the stove has low, medium, and high settings. When the stove is operating at a low setting, the heat level is lower, thus the current cooking state can be determined as a low-smoke cooking state. Alternatively, the current heat level can be determined by detecting the temperature of the cooking appliance 500, and the current cooking state can be determined based on the heat level.

[0139] That is, in other embodiments, a Bluetooth module or other wireless communication module can be set on the range hood to realize the linkage setting between the range hood and the stove.

[0140] Furthermore, the control method includes: when the current cooking state is a low-smoke cooking state, controlling the opening angle of the smoke collection plate 11 to a first preset opening angle. This reduces the control difficulty of the smoke collection plate 11, simplifies the control logic of the range hood, and reduces control costs.

[0141] The control method also includes: when the current cooking state is a medium smoke cooking state or a high smoke cooking state,

[0142] The smoke-controlling plate 11 opens to a second preset opening angle, which is greater than the first preset opening state.

[0143] This design allows for an increase in the opening angle of the smoke collection plate 11 when the amount of oil fumes generated during the current cooking process is relatively large. It also allows the upper end of the flipping chamber assembly 2 to flip outward to increase the size of the smoke collection space, improve the smoke collection capacity, and ensure the extraction effect.

[0144] Specifically, such as Figure 15 As shown, the control method includes the following steps:

[0145] S101. Obtain the current cooking status;

[0146] S102. Determine whether the cooking state is low smoke. If yes, proceed to step S103; otherwise, proceed to step S104.

[0147] S103, control the opening angle of the smoke collection plate 11 to be less than or equal to the first preset opening angle;

[0148] S104. Control the opening angle of the smoke collection plate 11 to be greater than or equal to the preset opening angle.

[0149] Furthermore, when the current cooking state is medium smoke cooking state, the smoke collection plate 11 is controlled to open to the second preset opening angle; when the current cooking state is high smoke cooking state, the smoke collection plate 11 is controlled to open to the third preset opening angle, the third preset opening angle is greater than the second preset opening angle, so that the greater the amount of oil smoke, the greater the opening angle of the smoke collection plate 11 and the opening angle of the flipping cavity assembly 2.

[0150] The control method provided in this embodiment is applicable to the control of any of the range hoods in Embodiments 1 to 3. The specific structure of the range hood will not be described in this embodiment.

[0151] Example 5

[0152] This embodiment provides a control method for a range hood, and the control method provided in this embodiment is a further improvement based on the control method in Embodiment 4. This embodiment will not repeat the same structure as the above embodiments.

[0153] In this embodiment, the smoke collection plate 11 includes a main smoke plate 111 and an auxiliary smoke plate 112 hinged to the lower end of the main smoke plate 111. The upper end of the main smoke plate 111 is rotatably mounted on the smoke collection hood 6, and the linkage drive mechanism 3 acts on the main smoke plate 111. That is, the control method provided in this embodiment is applied to the range hood mentioned in Embodiment 3.

[0154] The control method also includes: when the preset expansion conditions are met, controlling the auxiliary smoke plate 112 to flip relative to the main smoke plate 111 in a direction away from the smoke collection hood 6.

[0155] In some cases, when the amount of oily smoke is large and the current opening angle of the main smoke plate 111 cannot adequately meet the oily smoke extraction requirements, the smoke collection space can be increased and the smoke collection effect improved by controlling the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111. Compared with the conventional method of increasing the opening angle of the main smoke plate 111 relative to the smoke hood 6 to increase the smoke collection space, this method has a wider range of adjustment for the smoke collection space and is more flexible and diverse, which can better meet the user's adjustment needs for the smoke collection range.

[0156] Normally, when the opening angle of the main smoke plate 111 is less than the first preset opening angle, the smoke-gathering space formed by the smoke-gathering plate 11 and the smoke-collecting hood 6 is small. When it is necessary to expand the space, it is preferable to increase the opening angle of the main smoke plate 111. While controlling the main smoke plate 111 to flip outward, the flipping cavity assembly 2 is pulled outward to increase the smoke-gathering space. When the opening angle of the smoke-gathering plate 11 is relatively large, the smoke-gathering plate 11 may not be able to continue to increase the opening angle, or increasing the opening angle may easily cause obstruction of the user's view. Therefore, it is more appropriate to increase the expansion space by using the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111. In this case, the expansion space can be increased by using the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111.

[0157] Preset expansion conditions include:

[0158] The main smoke plate 111 has reached its maximum opening angle and the current operating wind force does not meet the requirements for smoke extraction.

[0159] Alternatively, the opening angle of the main smoke plate 111 is greater than or equal to the second preset angle, and the current operating wind force does not meet the requirements for fume extraction;

[0160] Alternatively, if the opening angle of the main smoke panel 111 is greater than or equal to the second preset angle and the main smoke panel 111 continues to rotate, there is a risk of obstructing the user's view.

[0161] Specifically, such as Figure 16 As shown, the control method includes the following steps:

[0162] S201. Obtain the current cooking status;

[0163] S202. Determine whether the cooking state is low smoke. If yes, proceed to step S203; otherwise, proceed to step S204.

[0164] S203, control the smoke gathering plate 11 to open to the first angle, and control the auxiliary smoke plate 112 to be flush with the main smoke plate 111;

[0165] S204, Control the smoke collection plate 11 to open to the second angle;

[0166] S205. Determine whether the preset expansion conditions are met. If yes, proceed to step S206; otherwise, return to step S201.

[0167] S206, Control the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111.

[0168] It is worth noting that the angle at which the auxiliary smoke plate 112 flips outward relative to the main smoke plate 111 can be fixed or determined according to the amount of oil smoke.

[0169] Example 6

[0170] This embodiment provides a control method, which is a further improvement on the control method provided in Embodiment 5. This embodiment will not repeat the same technical solutions as in Embodiment 5.

[0171] like Figure 17 As shown, in this embodiment, a smoke concentration sensor is installed in the range hood to detect the smoke concentration, and an air volume sensor is installed at the air inlet of the fan or the smoke exhaust outlet of the smoke collection device 100 to detect the actual operating air volume.

[0172] To simplify the judgment, in this embodiment, the controller is preset with multiple different smoke concentration ranges, multiple air volume ranges, and multiple preset opening angle values.

[0173] Control methods include:

[0174] During the cooking process, the smoke concentration and actual operating air volume are monitored in real time.

[0175] Based on the preset smoke range where the detected smoke value is located and the air volume range where the actual operating air volume value is located, it is determined whether the preset expansion conditions are met.

[0176] That is, the control method provided in this embodiment can determine the target smoke collection state required for the current cooking state by combining the detected smoke concentration value and the current actual operating air volume. By combining the opening angle of the main smoke plate 111 and the angle of the auxiliary smoke plate 112 relative to the main smoke plate 111, the smoke collection state of the smoke collection device 100 is comprehensively adjusted to ensure the smoke collection effect while reducing the demand on the fan and improving the performance of the range hood.

[0177] The control methods specifically include:

[0178] Based on the smoke concentration range where the detected smoke concentration value is located, obtain the target opening angle and target wind force of the main smoke panel 111;

[0179] Rotate the main smoke plate 111 to the target opening angle and adjust the fan speed to the target speed.

[0180] Based on the preset smoke range where the detected smoke value is located and the air volume range where the actual operating air volume value is located, it is determined whether the preset expansion conditions are met.

[0181] For example, the controller has four preset smoke concentration thresholds, namely a first preset concentration value a, a second preset concentration value b, a third preset concentration value c and a fourth preset concentration value d, corresponding to five smoke concentration ranges, namely [a), [ab), [bc), [cd) and [d+∞).

[0182] The controller has three preset opening angle values: the first preset opening angle, the second preset opening angle, and the maximum preset opening angle.

[0183] The controller has four preset airflow thresholds: a` (first preset airflow value), b` (second preset airflow value), c` (third preset airflow value), and d` (fourth preset airflow value). Correspondingly, there are five airflow ranges: [a`), [a`b`), [b`c`), [c`d`), and [d`+∞).

[0184] The control methods specifically include:

[0185] When the range hood is started, the smoke collection plate 11 flips to the first preset angle;

[0186] Real-time monitoring of smoke concentration value X and actual operating air volume value Y;

[0187] When x ≤ the first preset concentration value and y ≤ the first preset air volume value, control the smoke collection plate 11 to open at the first preset angle and make the auxiliary smoke plate 112 flush with the main smoke plate 111.

[0188] When the first preset concentration value < x ≤ the second preset concentration value, and the first preset air volume value < y ≤ the second preset air volume value, the smoke collection plate 11 is controlled to open at the second preset angle and the auxiliary smoke plate 112 is flush with the main smoke plate 111.

[0189] When the second preset concentration value < x ≤ the third preset concentration value, and the second preset air volume value < y ≤ the third preset air volume value, the smoke collection plate 11 is controlled to open at the second preset angle and the auxiliary smoke plate 112 is flipped outward relative to the main smoke plate 111.

[0190] When the third preset concentration value < x ≤ the fourth preset concentration value, and the third preset air volume value < y ≤ the fourth preset air volume value, the smoke collection plate 11 is controlled to open at the third preset angle and the auxiliary smoke plate 112 is aligned with the main smoke plate 111; when x > the fourth preset concentration value and y > the fourth preset air volume value, the smoke collection plate 11 is controlled to open at the third preset angle and the auxiliary smoke plate 112 is flipped outward relative to the main smoke plate 111.

[0191] That is, when the detected smoke concentration value X falls into the first smoke concentration range [0a), the actual operating air volume is also smaller than the air volume value used by the range hood at this time, and a larger smoke collection range is not required. Then, the smoke collection plate 11 is controlled to open to the first preset opening angle, and the auxiliary smoke plate 112 is controlled to be flush with the main smoke plate 111, that is, the drive component for flipping the auxiliary smoke plate 112 is not working.

[0192] When the detected smoke concentration value falls into the second smoke concentration range [ab), the actual operating air volume is in the second air volume range [a`b`). At this time, the range hood needs to maintain a medium air volume value. It is determined that there needs to be a certain smoke collection range. That is, the smoke collection plate 11 is controlled to open at the second preset opening angle, so the auxiliary smoke plate 112 does not need to rotate relative to the main smoke plate 111.

[0193] When the detected smoke concentration value falls into the third smoke concentration range [bc), the actual operating air volume of the range hood is in the third air volume range [b`c`). The required air volume value is moderate, but a relatively larger smoke collection range is required. At this time, the smoke collection plate 11 is controlled to open at the second preset angle, and the auxiliary smoke plate 112 is flipped outward at a preset angle relative to the main smoke plate 111.

[0194] When the detected smoke concentration value falls into the fourth smoke concentration range [cd), the actual operating air volume of the range hood is in the fourth air volume range [c`d`). Since the current air volume value is large, it is determined that no additional smoke collection space is needed to achieve the extraction of oil fumes. That is, the smoke control panel is controlled to open the second preset angle, and the auxiliary smoke plate 112 does not need to be flipped relative to the main smoke plate 111.

[0195] When the detected smoke concentration value falls into the fifth smoke concentration range [d+∞), the actual operating air volume is relatively large and is in the fifth air volume range [d`+∞). However, due to the large amount of oil smoke, a large smoke collection space is required to ensure the oil smoke extraction effect, that is, to control the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111.

[0196] Example 7

[0197] This embodiment provides a control method for a range hood, and the control method provided in this embodiment is a further improvement on the control method in Embodiment 4. This embodiment is not limited to the same content as the above embodiments.

[0198] like Figure 18 and Figure 19 As shown, in this embodiment, the smoke collection plate 11 includes a main smoke plate 111 and an auxiliary smoke plate 112 hinged to the lower end of the main smoke plate 111. The upper end of the main smoke plate 111 is rotatably mounted on the smoke collection hood 6, and the linkage drive mechanism 3 acts on the main smoke plate 111.

[0199] The control method also includes: when it is determined that the smoke-collecting plate 11 is obstructing the user's view, controlling the auxiliary smoke-collecting plate 112 to rotate relative to the main smoke-collecting plate 111 in the direction toward the smoke hood 6. This setting can reduce the problem of the smoke-collecting plate 11 obstructing the user's view due to a large rotation angle by controlling the inward rotation of the auxiliary smoke-collecting plate 112, thus ensuring the user's cooking convenience.

[0200] Since there is no risk of the smoke baffle obstructing the user's view when the smoke baffle 11 is opened at a small angle, in order to simplify control, when the opening angle of the smoke baffle 11 is greater than the first preset angle, it is determined whether the smoke baffle obstructs the user's view.

[0201] That is, the control methods specifically include:

[0202] S301. Obtain the current cooking status;

[0203] S302. Determine whether it is low-smoke cooking. If yes, proceed to step S303; otherwise, proceed to step S304.

[0204] S303, control the smoke gathering plate 11 to open to the first angle, and control the auxiliary smoke plate 112 to be flush with the main smoke plate 111;

[0205] S304, Control the smoke collection plate 11 to open to the second angle;

[0206] S305. Determine whether the smoke collection plate 11 obstructs the user's view. If yes, proceed to step S306; otherwise, proceed to step S301.

[0207] Step S306: Control the auxiliary smoke plate 112 to flip the main smoke plate 111 inward first.

[0208] It is worth noting that the first angle is less than or equal to the first preset angle, and the second angle is greater than the first preset angle. The second angle can be a fixed value, such as the second preset angle, or it can be a value that varies depending on the specific amount of oil fume.

[0209] Specifically, in this embodiment, a height sensor is installed on the range hood. The height sensor is communicatively connected to the controller and used to detect the user's height. Based on the detected user's height and the current opening angle of the main smoke panel 111, the controller determines whether the smoke collection panel 11 poses a risk of obstructing the user's view.

[0210] Specifically, the steps S for determining whether the smoke-collecting plate 11 obstructs the user's view include:

[0211] S3051. Obtain the distance c between the ground and the stove 400 countertop and the distance x between the front end of the smoke collection plate 11 and the front end of the range hood in the front-back direction.

[0212] S3052. Obtain the user's height h and the distance e between the user and the front of the range hood in the front-to-back direction;

[0213] S3053. Calculate the user's line-of-sight angle k = arctan[(hfc) / (e+ag);

[0214] Where c is the distance between the top of the cooking appliance 500 and the ground, a is the distance between the front end of the range hood and the wall in the front-to-back direction, g is the distance between the center of the cooking appliance 500 and the wall in the front-to-back direction, and f is the distance between the user's eyes and the top of their head. a, c, g and f are all constants.

[0215] S3054. Compare the magnitudes of y`=x / tanσ and y=(agx)×tank. If y`>y, there is no occlusion; otherwise, there is occlusion.

[0216] Furthermore, the control method also includes: when it is determined that the smoke gathering plate 11 obstructs the user's view and the current opening angle of the main smoke plate 111 is less than the maximum opening angle, controlling the auxiliary smoke plate 112 to flip relative to the main smoke plate 111 in the direction toward the smoke collection hood 6, and increasing the opening angle of the main smoke plate 111.

[0217] Since the auxiliary smoke plate 112 is flipped relative to the main smoke plate 111 in the direction towards the smoke collection hood 6, the smoke collection capacity of the smoke collection device 100 will be affected to a certain extent. If the opening angle of the main smoke plate 111 is not at its maximum opening angle, the smoke collection effect of the smoke collection plate 11 can be ensured by increasing the opening angle of the main smoke plate 111, thereby improving the oil fume extraction performance while avoiding obstruction of the user's view.

[0218] That is, the control method further includes: when it is determined that the smoke gathering plate 11 is obstructing the user's line of sight and the current opening angle of the main smoke plate 111 is less than the maximum opening angle, the auxiliary smoke plate 112 is controlled to flip relative to the main smoke plate 111 in the direction toward the smoke collection hood 6 and the opening angle of the main smoke plate 111 is increased.

[0219] Furthermore, the opening angle of the main smoke panel 111 is increased to a third preset opening angle, which simplifies the control of the range hood. The third preset opening angle is equal to or less than the maximum opening angle of the main smoke panel 111.

[0220] In this embodiment, the control method further includes: when it is determined that the smoke gathering plate 11 is obstructing the user's view, the auxiliary smoke plate 112 is flipped and rotated to be parallel with the user.

[0221] In another embodiment, the control method includes: when it is determined that the smoke-gathering plate 11 obstructs the user's view, controlling the auxiliary smoke plate 112 to rotate at an angle less than the current opening angle of the main smoke plate 111 relative to the main smoke plate 111. This arrangement ensures that after the auxiliary smoke plate 112 rotates relative to the main smoke plate 111, it is either vertically positioned or tilted forward from bottom to top, thereby preventing the smoke flowing onto the auxiliary smoke plate 112 from flowing outward along the auxiliary smoke plate 112 and reducing the interference of the inward rotation of the auxiliary smoke plate 112 on the smoke-gathering effect.

[0222] In another embodiment, when it is determined that the smoke-collecting plate 11 is obstructing the user's view, the auxiliary smoke plate 112 is controlled to flip inward and extend backward and upward in a direction away from the main smoke plate 111, so that when the smoke acts on the auxiliary smoke plate 112, it can flow along the auxiliary smoke plate 112 into the smoke-collecting space.

[0223] Example 8

[0224] This embodiment provides a control method for a range hood. The control method provided in this embodiment is basically the same as the control method provided in Embodiment 7, with only some differences in settings. This embodiment will not repeat the same content as Embodiment 7.

[0225] like Figure 20 As shown, the control method provided in this embodiment includes the following steps:

[0226] S401, Stove ignition;

[0227] S402. Obtain the firepower status. When the firepower status is low, execute step S403; when the firepower status is medium, execute step S404; when the firepower status is ignition, execute step S405.

[0228] S403, The range hood is running, and the smoke collection plate 11 is opened to the first preset angle;

[0229] S404, The range hood is running, the smoke collection plate 11 is opened to the second preset angle, and step S406 is executed;

[0230] S405, The range hood is running, the smoke collection plate 11 is opened to the third preset angle, and step S406 is executed;

[0231] S406. Determine whether the smoke baffle obstructs the user's view. If yes, proceed to step S407; otherwise, return to step S402.

[0232] S407, Control the auxiliary smoke plate 112 to flip inward relative to the main smoke plate 111.

[0233] That is, the control method provided in this embodiment determines the current cooking state based on the ignition power level, and controls the opening angle of the smoke baffle 11 based on the power level. When the opening angle of the smoke baffle 11 is the second preset angle and the third preset angle, it determines whether the smoke baffle obstructs the user's view. The control method is simple and reliable.

[0234] Example 9

[0235] This embodiment provides a control method for a range hood, and the control method provided in this embodiment can be applied to the range hood provided in Embodiment 3.

[0236] In this embodiment, the control method includes: when the current cooking state is a high-smoke cooking state, determining the opening angle of the main smoke plate 111 and the rotation direction of the auxiliary smoke plate 112 relative to the main smoke plate 111 based on the user's height. This allows for good smoke extraction while preventing the smoke-collecting plate 11 from obstructing the user's view.

[0237] like Figure 21 As shown, the control method provided in this embodiment includes:

[0238] S501. Obtain the current cooking state. If the cooking state is a low smoke cooking state, execute step S502. If the current cooking state is a high smoke cooking state, execute step S503.

[0239] The current cooking status can be obtained by referring to the above embodiments, and will not be repeated here;

[0240] S502, control the smoke gathering plate 11 to open to the first preset angle and control the auxiliary smoke plate 112 to be flush with the main smoke plate 111;

[0241] S503. Determine whether the user's height is less than the preset height. If yes, proceed to step S504; otherwise, proceed to step S505.

[0242] S504, control the smoke collecting plate 11 to open to the second preset opening angle, and control the auxiliary smoke plate 112 to flip outward relative to the main smoke plate 111;

[0243] S505, control the smoke gathering plate 11 to open to the third preset angle, and control the auxiliary smoke plate 112 to flip inward relative to the main smoke plate 111.

[0244] When the main smoke plate 111 is rotated at a large angle, or when the auxiliary smoke plate 112 is rotated outward relative to the main smoke plate 111, if the user is tall, there is a possibility of obstructing the user's view. If a larger smoke collection space is required, it is necessary to increase the rotation angle of the main smoke plate 111 while simultaneously rotating the auxiliary smoke plate 112 inward to avoid obstruction, thus accommodating a relatively large smoke collection space and avoiding the risk of obstructing the view. If the user's height ensures that rotating the auxiliary smoke plate 112 outward relative to the main smoke plate 111 will not obstruct the user's view, then the method of rotating the auxiliary smoke plate 112 outward relative to the main smoke plate 111 is preferred to increase the size of the smoke collection space.

[0245] It is worth noting that in this embodiment, when the current cooking state is medium smoke cooking state, step S503 can be executed, or the smoke gathering plate 11 can be directly controlled to open the second preset opening angle, and the auxiliary smoke plate 112 can be controlled to be flush with the main smoke plate 111.

[0246] 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 will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. 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 range hood, comprising a smoke collection hood (6) having a smoke collection chamber (63) and a front opening, characterized in that, The range hood also includes: The flip chamber assembly (2) is movably installed in the smoke collection hood (6) at its lower end and can be flipped outward through the front opening. The flip chamber assembly (2) has a smoke inlet (214) that communicates with the smoke collection chamber (63). A smoke collection plate (11) is rotatably mounted on the front side of the smoke collection hood (6) to open or close the smoke inlet (214) and the front opening; The linkage drive mechanism (3) is configured to drive the smoke-collecting plate (11) to rotate only when the opening angle of the smoke-collecting plate (11) is less than or equal to the first preset opening angle, and to drive the smoke-collecting plate (11) and the flipping cavity assembly (2) to open outward or close inward in linkage when the opening angle of the smoke-collecting plate (11) is greater than the first preset opening angle. The side of the flipping cavity assembly (2) is provided with a connecting hole (23). The linkage drive mechanism (3) includes a flipping linkage component (31), a drive motor (37) and a transmission component. The transmission component is connected to the flipping linkage component (31) and the smoke collecting plate (11). The drive motor (37) drives the smoke collecting plate (11) to rotate through the transmission component, while actuating the flipping linkage component (31) to slide in the connecting hole (23) to drive the flipping cavity assembly (2) to rotate.

2. The range hood according to claim 1, characterized in that, The connecting hole (23) includes a clearance hole (231) and an actuation hole (232) connected to the front end of the clearance hole (231). The shape of the clearance hole (231) is consistent with the running trajectory of the flip linkage (31) when the smoke collecting plate (11) is opened from the closed state to the first preset opening angle. When the opening angle of the smoke collecting plate (11) is less than the first preset opening angle, the flip linkage (31) slides along the clearance hole (231). When the opening angle of the smoke collecting plate (11) is greater than the first preset opening angle, the flip linkage (31) slides in the actuation hole (232) to actuate the flip cavity assembly (2) to rotate. And / or, the range hood further includes a reset member (4) that always applies a backward-rotating elastic force to the flip chamber assembly (2).

3. The range hood according to claim 2, characterized in that, The avoidance hole (231) is an arc-shaped hole with its opening facing the rotation axis of the smoke collection plate (11), and the actuation hole (232) is an elongated hole extending along the height direction of the flipping cavity assembly (2).

4. The range hood according to any one of claims 1-3, characterized in that, The flipping cavity assembly (2) includes an outer mounting frame and an inner smoke collection frame (21). The lower end of the outer mounting frame is rotatably mounted inside the smoke collection hood (6). The inner smoke collection frame (21) can be slidably mounted on the outer mounting frame along the height direction of the outer mounting frame, so that the upper end of the inner smoke collection frame (21) is close to or away from the smoke collection plate (11). The inner smoke collection frame (21) has the smoke inlet (214). The linkage drive mechanism (3) is connected to the outer mounting frame. And / or, the smoke collecting plate (11) includes a main smoke plate (111) and an auxiliary smoke plate (112) hinged to the lower end of the main smoke plate (111). The upper end of the main smoke plate (111) is rotatably mounted on the smoke collection hood (6), and the main smoke plate (111) and the auxiliary smoke plate (112) cooperate to close or open the front opening. The linkage drive mechanism (3) is connected between the main smoke plate (111) and the flipping cavity assembly (2).

5. The range hood according to claim 4, characterized in that, A connecting component (5) is connected between the smoke collecting plate (11) and the smoke collecting inner frame (21). The connecting component (5) is configured to pull the upper end of the smoke collecting inner frame (21) close to the smoke collecting plate (11) when the smoke collecting plate (11) is flipped open relative to the smoke collecting hood (6). Alternatively, a connecting component (5) is connected between the auxiliary smoke plate (112) and the inner smoke collection frame (21), the connecting component (5) being configured to: when the auxiliary smoke plate (112) is flipped relative to the main smoke plate (111) in a direction away from the smoke collection hood (6), pull the upper end of the inner smoke collection frame (21) closer to the main smoke plate (111).

6. A control method for a range hood, characterized in that, The control method is applied to the control of the range hood as described in any one of claims 1-5, wherein the control method includes: controlling the opening angle of the smoke collection plate (11) according to the current cooking state, and when the current cooking state is a low smoke cooking state, controlling the opening angle of the smoke collection plate (11) to be less than or equal to the first preset opening angle.

7. The control method according to claim 6, characterized in that, The smoke collection plate (11) includes a main smoke plate (111) and an auxiliary smoke plate (112) hinged to the lower end of the main smoke plate (111). The upper end of the main smoke plate (111) is rotatably mounted on the smoke collection hood (6). The linkage drive mechanism (3) acts on the main smoke plate (111). The control method further includes: when a preset expansion condition is met, controlling the auxiliary smoke plate (112) to flip relative to the main smoke plate (111) in a direction away from the smoke collection hood (6); and / or, the control method further includes: when it is determined that the smoke collection plate (111) obstructs the user's view, controlling the auxiliary smoke plate (112) to flip relative to the main smoke plate (111) in a direction toward the smoke collection hood (6).

8. The control method according to claim 7, characterized in that, The controller of the range hood has multiple smoke value ranges and air volume ranges built in. The control method includes: real-time detection of smoke concentration and actual operating air volume of the fan during the cooking process, and determining whether the preset expansion conditions are met based on the preset smoke range where the detected smoke value is located and the air volume range where the actual operating air volume value is located. And / or, when it is determined that the smoke gathering plate (11) is obstructing the user's view and the current opening angle of the main smoke plate (111) is less than the maximum opening angle, the auxiliary smoke plate (112) is controlled to flip relative to the main smoke plate (111) in the direction toward the smoke collection hood (6) and the opening angle of the main smoke plate (111) is increased.

9. The control method according to claim 8, characterized in that, When the current cooking state is high smoke cooking state, if the user's height is less than the preset height, the main smoke plate (111) is controlled to open to the second preset angle, and the auxiliary smoke plate (112) is controlled to flip outward relative to the main smoke plate (111); And / or, when the current cooking state is high smoke cooking state, if the user's height is greater than or equal to the preset height, control the main smoke plate (111) to open to the third preset angle, and control the auxiliary smoke plate (112) to flip inward relative to the main smoke plate (111).

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