Range hood and range hood control method

Abstract

The present invention provides a range hood and a range hood control method, belonging to the technical field of kitchen appliances. The air duct structure for the range hood includes a baffle assembly, a drive assembly, and a guide assembly. The drive assembly is connected to the baffle assembly for driving the baffle assembly; the guide assembly is connected to the baffle assembly and the drive assembly for guiding the movement of the baffle assembly. The baffle assembly is slidably connected to the guide assembly. The drive assembly and the guide assembly cooperate to enable the baffle assembly to have a first operating state and a second operating state. The present invention uses the baffle assembly to movably divide the air duct into two independent spaces, thereby preventing airflow interference.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a range hood and a range hood control method. Background Art

[0002] In recent years, the concept of "close-in" (or "near-inhalation")—namely, smaller sizes, closer extraction ports to stoves, and reduced smoke leakage—has been gaining increasing attention in the kitchen appliance market. The range hood market has also begun to focus on concepts like "near-inhalation" and "ultra-thin." Ultra-thin, near-inhalation models are also the fastest-growing category in the overall range hood market.

[0003] Range hoods employing parallel-connected air cabinets achieve the same air volume at a lower impeller speed than traditional single-cabinet range hoods, providing users with a better user experience. To further reduce the height of the range hood, the smoke collection chamber is typically designed to be retractable. This means that when the range hood is operating, the smoke collection chamber extends downward; when the range hood is not operating, it retracts upward, achieving a "fully concealed" design.

[0004] When the range hood of this design is working, the smoke collecting chamber extends out of the box, and a large cavity will be generated in the position originally used to store the smoke collecting chamber. When the two fans of the dual-fan range hood work at the same time or are turned on individually, the airflows will interfere with each other, resulting in reduced efficiency in extracting smoke.

[0005] Directly designing a fixed baffle in the above-mentioned large cavity will affect the telescopic function of the smoke collecting cavity and cannot achieve the "fully hidden" design requirement of the smoke collecting cavity. Summary of the Invention

[0006] The object of the present invention is to provide an air duct structure, wherein the baffle assembly, the drive assembly and the guide assembly enable the baffle assembly to divide the air duct into two independent spaces, thereby avoiding airflow interference and reducing noise.

[0007] The object of the present invention is to provide a range hood that can divide the accommodating chamber between the fan and the smoke collecting chamber assembly into two independent spaces without affecting the product structure and function of the range hood, thereby avoiding mutual interference between the airflows when the two fans work simultaneously or are turned on separately, and improving the efficiency of extracting smoke.

[0008] The object of the present invention is to provide a range hood control method.

[0009] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0010] According to one aspect of the present invention, there is provided an air duct structure, characterized in that the air duct structure is used for a range hood, and the air duct structure comprises:

[0011] baffle assembly;

[0012] a driving assembly, connected to the baffle assembly, for driving the baffle assembly to move;

[0013] a guide assembly connected to the baffle assembly and the drive assembly, and configured to guide the movement of the baffle assembly, wherein the baffle assembly is slidably connected to the guide assembly;

[0014] Wherein, the driving assembly and the guide assembly cooperate with each other so that the baffle assembly has a first working condition and a second working condition.

[0015] According to one embodiment of the present invention, the guide assembly comprises:

[0016] vertical guide rail portion;

[0017] a horizontal guide rail portion, perpendicular to the vertical guide rail portion, wherein one end of the baffle assembly is connected to the horizontal guide rail portion, and the other end is slidably connected to the vertical guide rail portion;

[0018] When the driving assembly drives one end of the baffle assembly to move horizontally along the axis of the horizontal guide rail portion, the other end of the baffle assembly moves vertically along the vertical guide rail portion, so that the baffle assembly switches between the first working condition and the second working condition.

[0019] According to one embodiment of the present invention, the vertical guide rail portion includes:

[0020] Two vertical guide rails, wherein the two vertical guide rails are symmetrically arranged;

[0021] a rotating shaft, slidably connected between the two vertical guide rails, wherein the vertical guide rails are provided with guide grooves, and the rotating shaft is inserted into the guide grooves;

[0022] The baffle assembly includes a baffle, one end of which is hinged to the horizontal guide rail portion, and the other end of which is rotatably connected to the rotating shaft.

[0023] According to one embodiment of the present invention, the horizontal guide rail portion includes:

[0024] A horizontal guide rail, vertically arranged above the vertical guide rail;

[0025] a guide sleeve, sleeved on the outer periphery of the horizontal guide rail to slide along the horizontal guide rail, wherein the guide sleeve is connected to the drive assembly and the baffle assembly respectively;

[0026] When the driving assembly drives the guide sleeve to move, the baffle drives the rotating shaft to move up and down along the vertical guide rail.

[0027] According to one embodiment of the present invention, a position limiting component is further included, and the position limiting component includes:

[0028] a first limit block group, arranged on the horizontal guide rail to limit the motion range of the guide sleeve;

[0029] a second limit block group, arranged in the guide groove to limit the movement range of the rotating shaft;

[0030] The first limit block group and the second limit block group are used to limit the baffle to switch between the first working condition and the second working condition.

[0031] According to one embodiment of the present invention, in the first working condition, the drive assembly is in a retracted state, the guide sleeve is located at one end of the horizontal guide rail close to the drive assembly, the rotating shaft is located at one end of the vertical guide rail close to the horizontal guide rail, and the plane where the baffle is located intersects with the axis of the vertical guide rail.

[0032] According to an embodiment of the present invention, the included angle between the plane where the baffle is located and the axis of the vertical guide rail is θ, wherein 45°<θ1≤90°.

[0033] According to one embodiment of the present invention, in the second working condition, the guide sleeve is located at the end of the horizontal guide rail away from the drive assembly, the rotating shaft is located at the end of the vertical guide rail away from the horizontal guide rail, and the plane where the baffle is located intersects with the axis of the horizontal guide rail.

[0034] According to one embodiment of the present invention, the baffle is arranged to be inclined with respect to the horizontal guide rail, and the angle between the plane where the baffle is located and the axis of the vertical guide rail is θ2, wherein 0°≤θ2<20°.

[0035] According to a second aspect of the present invention, there is provided a range hood, the range hood comprising:

[0036] The air duct structure according to any one of the first aspects of the present invention, wherein the air duct structure comprises a baffle assembly;

[0037] Box;

[0038] A fan assembly is arranged inside the box body, comprising a first fan and a second fan, wherein an accommodating cavity is provided between the box body and the air inlet end of the fan assembly;

[0039] The smoke collecting chamber assembly is liftable and connected to the accommodating chamber, wherein the air duct structure is arranged in the accommodating chamber and is located above the smoke collecting chamber assembly.

[0040] The baffle assembly has a first working condition and a second working condition. In the first working condition, the range hood is in a non-working state, and the smoke collecting chamber assembly is located inside the accommodating chamber.

[0041] In the second working condition, when the range hood is in working condition, the smoke collection chamber assembly moves to the outside of the accommodating chamber, and the baffle assembly is in the second working condition. The baffle assembly divides the accommodating chamber into two sub-cavities, and the two sub-cavities are respectively connected to the air inlet ends of the first fan and the second fan.

[0042] According to one embodiment of the present invention, the smoke collecting chamber assembly includes:

[0043] The smoke collecting chamber comprises a first smoke collecting chamber air duct corresponding to the first fan and a second smoke collecting chamber air duct corresponding to the second fan,

[0044] a panel connected to the smoke collecting chamber;

[0045] Wherein, one of the sub-cavities is connected to the first fan and the first smoke collecting chamber air duct, and the other sub-cavity is connected to the second fan and the second smoke collecting chamber air duct.

[0046] According to one embodiment of the present invention, the vertical guide rail portion includes two vertical guide rails, one of the vertical guide rails is fixed to the box body, and the other vertical guide rail is fixed to the connection between the first fan and the second fan;

[0047] The horizontal guide rail is fixed to the interior of the box body, and the horizontal guide rail is perpendicular to the vertical guide rail.

[0048] According to a third aspect of the present invention, a range hood control method is provided, the range hood control method comprising:

[0049] Turn on the range hood, at which point the smoke collection chamber assembly is located at the smoke collection chamber initial position within the accommodating chamber, and the baffle is located at the baffle initial position within the accommodating chamber;

[0050] determining whether the cooker is cooking; if so, moving the smoke collection chamber assembly to a first preset smoke collection chamber position outside the accommodating chamber, and simultaneously driving the baffle to move to a first preset baffle position inside the accommodating chamber via the driving assembly, so as to divide the accommodating chamber into two sub-cavities;

[0051] When the smoke collecting chamber assembly moves to the first smoke collecting chamber preset position, the panel is opened and the fan assembly is started to discharge the oil smoke;

[0052] Determining whether cooking on the stove is finished, and if so, turning off the range hood, the fan assembly, and the panel;

[0053] When the panel is closed, the baffle is restored to its initial position, and the smoke collecting chamber assembly is restored to its initial position.

[0054] According to an embodiment of the present invention, when the cooker is cooking, after the smoke collecting chamber assembly moves to the first smoke collecting chamber preset position, the baffle is moved to the first baffle preset position by the driving assembly.

[0055] According to one embodiment of the present invention, when the cooker is cooking, after the smoke collection chamber assembly moves downward to a second smoke collection chamber preset position, the baffle is driven downward by the driving assembly, wherein the second smoke collection chamber preset position is located between the smoke collection chamber initial position and the first smoke collection chamber preset position; the movement speed of the baffle is less than or equal to the movement speed of the smoke collection chamber assembly.

[0056] According to an embodiment of the present invention, when the panel is closed, after the baffle moves to the baffle initial position, the smoke collecting chamber assembly is moved to the smoke collecting chamber initial position of the accommodating chamber.

[0057] According to one embodiment of the present invention, when the panel is closed, the smoke collection chamber assembly starts to move after the baffle moves to the second baffle preset position, wherein the second baffle preset position is located between the baffle initial position and the first baffle preset position; the movement speed of the baffle is greater than or equal to the movement speed of the smoke collection chamber assembly.

[0058] An embodiment of the present invention has the following advantages or beneficial effects:

[0059] The air duct structure of the present invention can divide the air duct into two independent spaces, thereby avoiding air flow interference and reducing noise.

[0060] The range hood of the present invention can divide the accommodating chamber between the fan and the smoke collecting chamber assembly into two independent spaces through the air duct structure without affecting the product structure and function, thereby avoiding mutual interference of airflows when the two fans work simultaneously or are turned on separately, and improving the efficiency of extracting range hoods.

[0061] The range hood control method of the present invention fully utilizes the space of the accommodating cavity by controlling the movement of the air duct structure and the smoke collecting chamber assembly. When the range hood is in working state, the accommodating cavity can be separated into two independent air ducts on the left and right, thereby avoiding mutual interference when the two fans are not working at the same time, thereby improving the efficiency of extracting oil smoke; when the range hood is not in working state, the air duct structure can be retracted to a specified position, thereby making way for the smoke collecting chamber, so that the smoke collecting chamber can be completely hidden in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings.

[0063] Figure 1 is a schematic diagram of an air duct structure in a first working condition according to an exemplary embodiment.

[0064] Figure 2 is a schematic diagram of the air duct structure in the second working condition according to an exemplary embodiment.

[0065] Figure 3 is a schematic diagram of a range hood according to an exemplary embodiment.

[0066] Figure 4 FIG. 1 is an explosion intention of a range hood according to an exemplary embodiment.

[0067] Figure 5 1 is a state diagram of the air duct structure and oil fume suction in the first working condition according to an exemplary embodiment.

[0068] Figure 6 1 is a diagram showing the state of the duct structure and oil fume suction in the first working condition according to an exemplary embodiment.

[0069] Figure 7 FIG. 1 is a flow chart of a method for controlling cooking fume according to an exemplary embodiment.

[0070] The description of the accompanying drawings is as follows:

[0071] 1. Baffle assembly; 11. Baffle;

[0072] 2. Drive components;

[0073] 3. Guide assembly; 31. Vertical guide rail portion; 311. Two vertical guide rails; 312. Rotating shaft; 3110. Guide groove; 32. Horizontal guide rail portion; 321. Horizontal guide rail; 322. Guide sleeve;

[0074] 4. Limiting assembly; 41. First limiting block group;

[0075] 5. Box body;

[0076] 6. Fan assembly; 61. First fan; 62. Second fan;

[0077] 7. Smoke collecting chamber assembly; 71. Smoke collecting chamber; 711. First smoke collecting chamber air duct; 712. Second smoke collecting chamber air duct; 72. Panel;

[0078] 100. Accommodation cavity. DETAILED DESCRIPTION

[0079] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0080] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0081] like Figures 1 to 2 As shown, Figure 1 A schematic diagram of the air duct structure provided by the present invention in the first working condition is shown. Figure 2 A schematic diagram of the air duct structure provided by the present invention in the second working condition is shown.

[0082] An air duct structure according to an embodiment of the present invention is used for a range hood, and includes:

[0083] Baffle assembly 1;

[0084] The driving assembly 2 is connected to the baffle assembly 1 and is used to drive the baffle assembly 1 to move;

[0085] The guide assembly 3 is connected to the baffle assembly 1 and the driving assembly 2 and is used to guide the movement of the baffle assembly 1, wherein the baffle assembly 1 is slidably connected to the guide assembly 3;

[0086] The driving assembly 2 and the guide assembly 3 cooperate with each other so that the baffle assembly 1 has a first working condition and a second working condition.

[0087] The air duct structure is located inside the housing 5 of the range hood and includes a baffle assembly 1, a drive assembly 2, and a guide assembly 3. The drive assembly 2 drives the baffle assembly 1 to move along the guide assembly 3. The baffle assembly 1 is used to control the range hood. In particular, for the air inlet duct near the air inlet end of a dual-fan range hood, the baffle assembly 1 can separate the air inlet duct into two independent channels, thereby avoiding airflow disturbance within the dual-fan range hood. Specifically, when the baffle assembly 1 is in a first operating state, the drive assembly 2 is in a retracted state, so that the baffle assembly 1 does not separate the air inlet duct of the range hood. In a second operating state, the drive assembly 2 extends and pushes the baffle assembly 1 along the guide assembly 3 to the middle of the air inlet duct, forming two independent channels. This structure meets the technical requirements of dual-fan range hoods for independent air inlet ducts. This structure is applicable to various range hoods, especially for repairing and adding air duct structures in range hoods after they leave the factory, meeting the different usage needs of users.

[0088] In a preferred embodiment of the present invention, the guide assembly 3 comprises:

[0089] vertical guide rail portion 31;

[0090] The horizontal guide rail portion 32 is perpendicular to the vertical guide rail portion 31 , wherein one end of the baffle assembly 1 is connected to the horizontal guide rail portion 32 and the other end is slidably connected to the vertical guide rail portion 31 ;

[0091] When the driving assembly 2 drives one end of the baffle assembly 1 to move horizontally along the axis of the horizontal guide rail portion 32, the other end of the baffle assembly 1 moves vertically along the vertical guide rail portion 31, so that the baffle assembly 1 switches between the first working condition and the second working condition.

[0092] like Figure 1-2 As shown, the driving assembly 2 can drive one end of the baffle assembly 1 to move horizontally along the axis of the horizontal guide rail portion 32, and the other end of the baffle assembly 1 to move vertically along the vertical guide rail portion 31, so that the baffle assembly 1 is in the first working state. Figure 1 and the second working condition Figure 2 When switching from the first operating mode to the second operating mode, the drive assembly 2 drives one end of the baffle assembly 1 toward the center of the horizontal guide rail 32, while the other end of the baffle assembly 1 moves downward along the vertical guide rail, allowing the baffle assembly 1 to separate the range hood's air inlet channel into two independent spaces. When switching from the second operating mode to the first operating mode, the drive section of the drive assembly 2 returns to its original position, and the two ends of the baffle assembly 1 move upward to be retracted near the horizontal guide rail 32, meeting different usage requirements.

[0093] In a preferred embodiment of the present invention, the vertical guide rail portion 31 includes:

[0094] Two vertical guide rails 311, wherein the two vertical guide rails 311 are symmetrically arranged;

[0095] The rotating shaft 312 is slidably connected between the two vertical guide rails 311 , wherein the vertical guide rails 311 are provided with guide grooves 3110 , and the rotating shaft 312 is inserted into the guide grooves 3110 ;

[0096] The baffle assembly 1 includes a baffle 11 , one end of which is hinged to the horizontal guide rail portion 32 , and the other end of which is rotatably connected to the rotating shaft 312 .

[0097] In a preferred embodiment of the present invention, the horizontal guide rail portion 32 includes:

[0098] The horizontal guide rail 321 is vertically arranged above the vertical guide rail 311;

[0099] The guide sleeve 322 is sleeved on the outer periphery of the horizontal guide rail 321 to slide along the horizontal guide rail 321, wherein the guide sleeve 322 is respectively connected to the drive assembly 2 and the baffle assembly 1;

[0100] When the driving assembly 2 drives the guide sleeve 322 to move, the baffle 11 drives the rotating shaft 312 to move up and down along the vertical guide rail 311 .

[0101] like Figure 1-2 As shown, one end of the baffle 11 is hinged to the guide sleeve 322, and the other end is rotatably connected to the rotating shaft 312. When the driving component 2 drives the guide sleeve 322 to move, the guide sleeve 322 drives the baffle 11 to slide along the horizontal guide rail 321. At the same time, the rotating shaft 312 can slide up and down along the guide groove 3110 to realize the switching of the baffle 11 between the first working condition and the second working condition.

[0102] In a preferred embodiment of the present invention, a limiting component 4 is further included, and the limiting component 4 includes:

[0103] A first limit block group 41 is provided on the horizontal guide rail 321 to limit the range of motion of the guide sleeve 322;

[0104] A second limit block set is provided in the guide groove 3110 to limit the range of motion of the rotating shaft 312;

[0105] The first limit block group 41 and the second limit block group are used to limit the baffle 11 from switching between the first working condition and the second working condition.

[0106] like Figure 1-2 As shown, the first limit block group includes a first limit block. By installing the first limit block on the horizontal guide rail 321, the guide sleeve 322 can be limited to the motion range of the first working condition and the second working condition;

[0107] The second limit block group includes a second limit block. By arranging the second limit block in the guide groove 3110, the movement range of the rotating shaft 312 can be limited to the first working condition and the second working condition.

[0108] In a preferred embodiment of the present invention, in the first working condition, the drive assembly 2 is in a retracted state, the guide sleeve 322 is located at one end of the horizontal guide rail 321 close to the drive assembly 2, the rotating shaft 312 is located at one end of the vertical guide rail 311 close to the horizontal guide rail 321, and the plane where the baffle 11 is located intersects with the axis of the vertical guide rail 311.

[0109] The included angle between the plane where the baffle 11 is located and the axis of the vertical guide rail 311 is θ1, wherein 45°<θ1≤90°.

[0110] like Figure 1 As shown, in the first working condition, the plane where the baffle 11 is located is parallel to or intersects with the horizontal guide rail 321, and the angle θ1 between the plane where the baffle 11 is located and the axis of the vertical guide rail 311 is greater than 0°, preferably 45°<θ1≤90°.

[0111] In a preferred embodiment of the present invention, in the second working condition, the guide sleeve 322 is located at the end of the horizontal guide rail 321 away from the drive assembly 2, the rotating shaft 312 is located at the end of the vertical guide rail 311 away from the horizontal guide rail 321, and the plane where the baffle 11 is located intersects with the axis of the horizontal guide rail 321.

[0112] The baffle 11 and the horizontal guide rail 321 are arranged at an angle, and the angle between the plane where the baffle 11 is located and the axis of the vertical guide rail 311 is θ2, wherein 0°≤θ2<20°.

[0113] like Figure 2 As shown, the drive assembly 2 pushes the guide sleeve 322 close to the vertical guide rail 311. At this time, the other end of the baffle 11 moves to the lower part of the vertical guide rail 311. The baffle 11 is parallel to the vertical guide rail 311 or is inclined upward from the vertical guide rail 311 to the horizontal guide rail 321. The angle between the plane where the baffle 11 is located and the axis of the vertical guide rail 311 is θ2, where 0°≤θ2<20°.

[0114] In a preferred embodiment of the present invention, the number of baffles 11 is 1-2, the number of guide sleeves 322 is the same as the number of baffles 11, and the number of drive assemblies 2 is 1-2.

[0115] like Figure 1-2As shown, there are two baffles 11 and two guide sleeves 322. The horizontal guide rail 321 is provided with a first limit block group for limiting the range of movement of the two guide sleeves 322. The two baffles 11 are both rotatably connected to the rotating shaft 312. The driving assembly 2 can be one or two. When the driving assembly 2 is one, the driving assembly 2 is fixed to one guide sleeve 322. When the driving assembly 2 pushes the baffle 11 on one guide sleeve 322 to move, the movement of the rotating shaft 312 can drive the movement of the other baffle 11 and the other guide sleeve 322. In addition, the horizontal guide rail 321 can also be two as shown in FIG. Figure 1-2 The symmetrical arrangement shown is shown. Thus, each horizontal guide rail 321 is equipped with a guide sleeve 322 and a baffle 11. The lower ends of the two baffles 11 are rotatably connected to the rotating shaft 312. The drive assembly 2 is connected to one of the guide sleeves 322. The drive assembly 2 drives the movement of one guide sleeve 322 and baffle 11, thereby driving the other baffle 11 to move synchronously. Of course, two drive assemblies 2 can also be provided, each connected to the two guide sleeves 322. The synchronous movement of the two drive assemblies 2 further drives the two baffles 11 to move between the first operating state and the second operating state.

[0116] Of course, when the range hood is not in operation, both baffles 11 are retracted above the accommodating chamber 11. The two baffles 11 can be parallel to the horizontal guide rail 321, or there can be a certain angle between the two baffles 11, as long as the two baffles 11 do not affect the operation of other components in the range hood. When the range hood is in operation, the drive assembly 2 drives the two guide sleeves 322 toward each other, pushing the end of the baffle 11 connected to the rotating shaft 312 downward, that is, causing the two baffles 11 to move toward the center of the accommodating chamber 11. At this time, the angle between the two baffles 11 is greater than 0°, with a recommended range of greater than 0° and less than 40°. At this time, the baffle 11 can separate the air distribution channel into two independent left and right channels, avoiding mutual interference when the two fans are not working at the same time. This ensures that the air duct inside the range hood has a good separation effect.

[0117] like Figures 3 to 6 As shown, Figure 3 A schematic diagram of the range hood provided by the present invention is shown. Figure 2 The explosion intention of the range hood provided by the present invention is shown. Figure 5 The diagram shows the state of the air duct structure and oil fume suction in the first working condition provided by the present invention. Figure 6 The diagram shows the state of the duct structure and oil fume suction during the first working condition provided by the present invention.

[0118] A range hood according to an embodiment of the present invention includes:

[0119] As the air duct structure described above, wherein the air duct structure includes a baffle assembly 1;

[0120] Box 5;

[0121] The fan assembly 6 is arranged inside the box body 5 and includes a first fan 61 and a second fan 62, wherein an accommodating cavity 100 is provided between the box body 5 and the air inlet end of the fan assembly 7;

[0122] The smoke collecting chamber assembly 7 is connected to the accommodating chamber 100 in a liftable manner, wherein the air duct structure is arranged in the accommodating chamber 100 and is located above the smoke collecting chamber assembly 7

[0123] The baffle assembly 1 has a first working condition and a second working condition. In the first working condition, the range hood is in a non-working state, and the smoke collecting chamber assembly 7 is located inside the accommodating chamber 100.

[0124] In the second working condition, when the range hood is in working condition, the smoke collection chamber assembly 7 moves to the outside of the accommodating chamber 100, and the baffle assembly 1 is in the second working condition. The baffle assembly 1 divides the accommodating chamber 100 into two sub-cavities, and the two sub-cavities are respectively connected to the air inlet ends of the first fan 61 and the second fan 62.

[0125] Among them, the range hood includes any of the above-mentioned air duct structures. Since the above-mentioned air duct structure has the above-mentioned technical effects, the range hood having the above-mentioned air duct structure should also have the same technical effects.

[0126] When the range hood is in working condition, the smoke collecting chamber assembly 7 moves to the outside of the accommodating chamber 100, and the baffle assembly 1 is in the second working condition, that is, the baffle 11 moves to the middle of the accommodating chamber 100. Preferably, the rotating shaft 312 at the bottom of the baffle 11 can contact the smoke collecting chamber 71, so that the baffle 11 can separate the accommodating chamber 100 into two sub-cavities. The two sub-cavities serve as two independent air duct sections on the left and right, which can avoid mutual interference when the two fans are not working at the same time, thereby improving the efficiency of extracting oil smoke; when the range hood is in non-working condition, the baffle 11 is in the first working condition, and the smoke collecting chamber assembly 7 and the air duct structure are both located inside the accommodating chamber 100.

[0127] By controlling the movement of the air duct structure and the smoke collection chamber assembly 7, the space of the accommodating chamber 100 is fully utilized. When the range hood is in operation, the accommodating chamber 100 can be separated into two independent air ducts on the left and right sides. This can prevent the two fans from interfering with each other when they are not operating at the same time, thereby improving the efficiency of extracting oil smoke. When the range hood is not in operation, the air duct structure can be retracted to a designated position, thereby making way for the smoke collection chamber 71, so that the smoke collection chamber 71 can be completely hidden inside the housing 5. This application solves the problem of a dual-fan range hood, in which the smoke collection chamber 71 must be completely hidden inside the housing 5, while also preventing mutual interference between the first fan 61 and the second fan 62 when they are operating simultaneously or at different times.

[0128] In a preferred embodiment of the present invention, the smoke collecting chamber assembly 7 comprises:

[0129] The smoke collecting chamber 71 includes a first smoke collecting chamber air duct 711 corresponding to the first fan 61 and a second smoke collecting chamber air duct 712 corresponding to the second fan 62.

[0130] The panel 72 is connected to the smoke collecting chamber 71;

[0131] One sub-cavity is connected to the first fan 61 and the first smoke collecting chamber air duct 711 , and the other sub-cavity is connected to the second fan 62 and the second smoke collecting chamber air duct 712 .

[0132] like Figure 3-6 As shown, when the range hood is in a non-working state, the baffle 11 is in a first working state, and the smoke collecting chamber assembly 7 and the air duct structure are both located inside the accommodating chamber 100 .

[0133] When the range hood is in working condition, the smoke collecting chamber assembly 7 moves to the outside of the accommodating chamber 100, and the baffle assembly 1 is in the second working condition, that is, the baffle 11 moves to the middle of the accommodating chamber 100. Preferably, the rotating shaft 312 at the bottom of the baffle 11 can contact the smoke collecting chamber 71, so that the baffle 11 can separate the accommodating chamber 100 into two sub-cavities, wherein one sub-cavity is connected to the first fan 61 and the first smoke collecting chamber air duct 711, and the other sub-cavity is connected to the second fan 62 and the second smoke collecting chamber air duct 712, so that the two sub-cavities become two independent air inlet channels, avoiding the mutual interference problem between the first fan 61 and the second fan 62 when they are running at the same time or at different times, thereby improving the efficiency of extracting oil smoke.

[0134] In a preferred embodiment of the present invention, the vertical guide rail portion 31 includes two vertical guide rails 311 , one vertical guide rail 311 is fixed to the box body 5 , and the other vertical guide rail 311 is fixed to the connection between the first fan 61 and the second fan 62 ;

[0135] The horizontal guide rail 321 is fixed to the interior of the box 5 , and is perpendicular to the vertical guide rail 311 .

[0136] like Figure 4-6 As shown, the air duct structure of the present application is located at the upper part of the accommodating chamber 100, wherein two vertical guide rails 311 are provided, one of which is fixed to the housing 5, and the other is fixed to the connection between the first fan 61 and the second fan 62. When the range hood is not in operation, the smoke collecting chamber 71 can be inserted between the two vertical guide rails 311, that is, the two vertical guide rails 311 will not affect the telescopic movement of the crude oil smoke collecting chamber assembly 7;

[0137] The horizontal guide rail 321 is located above the smoke collecting chamber assembly 7, fixed to the interior of the box body 5, and is perpendicular to the vertical guide rail 311;

[0138] The driving component 2 is fixed inside the box body 5, and the driving end of the driving component 2 is fixedly connected to the guide sleeve 322. The driving component 2 can push the guide sleeve 322 to slide horizontally along the horizontal guide rail 321. The guide sleeve 322 drives one end of the baffle 11 to move horizontally, and the other end to move up and down along the vertical guide rail 311. When the range hood is in working state, the baffle 11 moves to the lowest end of the vertical guide rail 311. At this time, the baffle 11 is parallel or approximately parallel to the vertical guide rail 311, thereby dividing the accommodating chamber 100 into two sub-cavities; when the range hood is in non-working state, the baffle 11 is parallel or approximately horizontal to the horizontal guide rail 321, as long as it does not affect the smoke collection chamber assembly 71 hidden in the accommodating chamber 100. It should be noted that the baffle 11 can be set to two, the corresponding guide sleeves 322 are two, and the horizontal guide rail 321 can also be two. Figure 3-6 Symmetrical setup as shown. Figure 3-6 For example, two horizontal guide rails 321 can be symmetrically arranged inside the housing 5. Each horizontal guide rail 321 is equipped with a guide sleeve 322 and a baffle 11. The lower ends of the two baffles 11 are rotatably connected to the rotating shaft 312. The drive assembly 2 is connected to one of the guide sleeves 322. The drive assembly 2 drives one guide sleeve 322 and baffle 11 to move, thereby driving the other baffle 11 to move synchronously. Of course, two drive assemblies 2 can also be provided, each connected to the two guide sleeves 322. The synchronous movement of the two drive assemblies 2 further drives the two baffles 11 to move in the first working condition and the second working condition. When the range hood is not in operation, the two baffles 11 are retracted above the accommodating chamber 11. The two baffles 11 can be parallel to the horizontal guide rail 321, or there can be a certain angle between the two baffles 11, as long as the two baffles 11 do not affect the storage of the smoke collection chamber assembly 7 in the accommodating chamber 100. When the range hood is in operation, the drive assembly 2 drives the two guide sleeves 322 toward each other, pushing the end of the baffle 11 connected to the rotating shaft 312 downward, causing the two baffles 11 to move toward the center of the accommodating chamber 100. At this time, the angle between the two baffles 11 is greater than 0°, with a recommended range of greater than 0° and less than 40°. The baffles 11 move to the center of the accommodating chamber 100 and separate two independent left and right sub-cavities within the accommodating chamber 100, which can serve as air inlet ducts for the first fan 61 and the second fan 62, and can also prevent mutual interference when the two fans are not operating simultaneously, to ensure that the air duct inside the range hood has a good separation effect.

[0139] like Figure 1-7 As shown, Figure 1 A schematic diagram of the air duct structure provided by the present invention in the first working condition is shown. Figure 2 A schematic diagram of the air duct structure provided by the present invention in the second working condition is shown. Figure 3 A schematic diagram of the range hood provided by the present invention is shown. Figure 2The explosion intention of the range hood provided by the present invention is shown. Figure 5 The diagram shows the state of the air duct structure and oil fume suction in the first working condition provided by the present invention. Figure 6 The diagram shows the state of the duct structure and oil fume suction during the first working condition provided by the present invention. Figure 7 The flowchart of the range hood control method provided by the present invention is shown.

[0140] A range hood control method according to an embodiment of the present invention includes:

[0141] Turn on the range hood, at this time the smoke collecting chamber assembly 7 is located at the smoke collecting chamber initial position in the accommodating chamber 100, and the baffle 11 is located at the baffle initial position in the accommodating chamber 100;

[0142] Determine whether the cooker is cooking. If so, move the smoke collection chamber assembly 7 to a first smoke collection chamber preset position outside the accommodating chamber 100. Simultaneously, drive the baffle 11 to move to a first baffle preset position inside the accommodating chamber 100 via the driving assembly 2, thereby dividing the accommodating chamber 100 into two sub-cavities.

[0143] When the smoke collecting chamber assembly 7 moves to the first smoke collecting chamber preset position, the panel 72 is opened and the fan assembly 6 is started to discharge the oil smoke;

[0144] Determine whether cooking on the stove is finished. If so, turn off the range hood, fan assembly 6 and panel 72;

[0145] When the panel 72 is closed, the baffle 11 is restored to its initial position, and the smoke collecting chamber assembly 7 is restored to its initial position.

[0146] Among them, when the range hood is in a non-working state, the smoke collection chamber assembly 7 and the air duct structure are both located inside the accommodating chamber 100. At this time, the baffle 11 is in the first working condition. This application refers to the position of the baffle 11 in the first working condition as the baffle initial position; the position of the smoke collection chamber assembly 7 when the range hood is in a non-working state is referred to as the smoke collection chamber initial position.

[0147] When the range hood is in working condition, the smoke collection chamber assembly 7 is in the first smoke collection chamber preset position. At this time, the smoke collection chamber assembly 7 is completely moved to the outside of the box body 5, and the accommodating chamber 100 is converted into an air inlet channel between the smoke collection chamber 71 and the fan assembly 6. The baffle 11 moves to the second working condition, that is, at this time the baffle 11 moves to the middle of the accommodating chamber 100. Preferably, the rotating shaft 312 at the bottom of the baffle 11 can contact the smoke collection chamber 71, so that the baffle 11 can separate the accommodating chamber 100 into two sub-cavities, and the two sub-cavities can serve as two independent air ducts on the left and right. One of the sub-cavities is connected to the first fan 61 and the first smoke collection chamber air duct 711, and the other sub-cavity is connected to the second fan 62 and the second smoke collection chamber air duct 712. This can avoid mutual interference when the two fans are not working at the same time, thereby improving the efficiency of extracting range hoods.

[0148] The present invention fully utilizes the space of the accommodating chamber 100 by controlling the movement of the air duct structure and the smoke collection chamber assembly 7. When the range hood is in operation, the accommodating chamber 100 can be separated into two independent air ducts on the left and right sides. This can prevent mutual interference between the two fans when they are not working at the same time, thereby improving the efficiency of extracting oil smoke. When the range hood is not in operation, the air duct structure can be retracted to a designated position, thereby making way for the smoke collection chamber 71, so that the smoke collection chamber 71 can be completely hidden in the housing 5. This solves the problem of mutual interference between the first fan 61 and the second fan 62 when the smoke collection chamber 71 is required to be completely hidden in the housing 5 in a dual-fan range hood.

[0149] In a preferred embodiment of the present invention, when the cooker is cooking, after the smoke collecting chamber assembly 7 moves to the first smoke collecting chamber preset position, the baffle 11 is moved to the first baffle preset position by the driving assembly 2 .

[0150] like Figure 7 As shown, this can avoid mutual interference between the movements of the smoke collecting chamber assembly 7 and the baffle 11, reduce damage caused by product interference, and improve the service life and user experience of the product.

[0151] In a preferred embodiment of the present invention, when the cooker is cooking, after the smoke collection chamber assembly 7 moves downward to the second smoke collection chamber preset position, the baffle 11 is driven downward by the driving assembly 2, wherein the second smoke collection chamber preset position is located between the smoke collection chamber initial position and the first smoke collection chamber preset position; the movement speed of the baffle 11 is less than or equal to the movement speed of the smoke collection chamber assembly 7.

[0152] like Figure 7 When the smoke collecting chamber assembly 7 moves downward to a position between the smoke collecting chamber initial position and the first smoke collecting chamber preset position, as long as there is no mutual interference between the baffle 11 and the smoke collecting chamber assembly 7, the position of the smoke collecting chamber assembly 7 at this time can be defined as the second smoke collecting chamber preset position.

[0153] After the smoke collecting chamber assembly 7 moves downward to the preset position of the second smoke collecting chamber, the smoke collecting chamber assembly 7 and the baffle 11 can be moved downward at the same time, but the movement speed of the baffle 11 needs to be less than or equal to the movement speed of the smoke collecting chamber assembly 7 to avoid mutual interference between the movements of the smoke collecting chamber assembly 7 and the baffle 11, reduce the damage caused by product interference, and at the same time, save the waiting time for extracting range fumes, and improve the service life and usage experience of the product.

[0154] In a preferred embodiment of the present invention, after the panel 72 is closed and the baffle 11 moves to the initial baffle position, the smoke collecting chamber assembly 7 is moved to the initial smoke collecting chamber position of the accommodating chamber 100 .

[0155] like Figure 7 As shown, when cooking is finished, the range hood enters an inoperative state, at which point the smoke collection chamber assembly 7 and the baffle 11 return to their initial positions within the accommodating chamber 100. By moving the baffle 11 to its initial position before the smoke collection chamber assembly 7 returns to its initial position within the accommodating chamber 100, interference between the movement of the smoke collection chamber assembly 7 and the baffle 11 can be avoided, minimizing damage caused by interference and improving the product's lifespan and user experience.

[0156] In a preferred embodiment of the present invention, when the panel 72 is closed, the smoke collection chamber assembly 7 starts to move after the baffle 11 moves to the second baffle preset position, wherein the second baffle preset position is located between the baffle initial position and the first baffle preset position; the movement speed of the baffle 11 is greater than or equal to the movement speed of the smoke collection chamber assembly 7.

[0157] like Figure 7 As shown, when cooking is finished, the range hood enters the non-operating state, at which point the smoke collection chamber assembly 7 and the baffle 11 return to their initial positions within the accommodating chamber 100. The baffle 11 is first moved upward to any position between the initial baffle position and the first baffle preset position, as long as there is no interference between the baffle 11 and the smoke collection chamber assembly 7. This position of the baffle at this point is referred to herein as the second baffle preset position.

[0158] After the baffle 11 moves to the preset position of the second baffle, the smoke collecting chamber assembly 7 and the baffle 11 are moved downward at the same time. However, the movement speed of the baffle 11 at this time needs to be greater than or equal to the movement speed of the smoke collecting chamber assembly 7 to avoid mutual interference between the movements of the smoke collecting chamber assembly 7 and the baffle 11, reduce the damage caused by product interference, and at the same time, save the waiting time for extracting range fumes, and improve the service life and usage experience of the product.

[0159] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on specific circumstances.

[0160] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0161] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0162] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible in the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: The range hood includes an air duct structure, and the air duct structure includes: A baffle assembly (1), comprising a baffle (11); A driving assembly (2) connected to the baffle assembly (1) and used to drive the baffle assembly (1) to move; A guide assembly (3) is connected to the baffle assembly (1) and the drive assembly (2) and is used to guide the movement of the baffle assembly (1), wherein the baffle assembly (1) is slidably connected to the guide assembly (3); wherein, the drive assembly (2) and the guide assembly (3) cooperate to enable the baffle assembly (1) to have a first working condition and a second working condition; The range hood further comprises: Box (5); A fan assembly (6) is arranged inside the box (5), comprising a first fan (61) and a second fan (62), wherein an accommodating cavity (100) is provided between the box (5) and the air inlet end of the fan assembly (6); A smoke collecting chamber assembly (7) is liftably connected to the accommodating chamber (100), wherein the air duct structure is arranged in the accommodating chamber (100) and is located above the smoke collecting chamber assembly (7); The baffle assembly (1) has a first working condition and a second working condition. In the first working condition, the range hood is in a non-working state, and the smoke collecting chamber assembly (7) is located inside the accommodating chamber (100). In the second working condition, when the range hood is in operation, the smoke collecting chamber assembly (7) moves to the outside of the accommodating chamber (100), and the baffle assembly (1) divides the accommodating chamber (100) into two sub-cavities, and the two sub-cavities are respectively connected to the air inlet ends of the first fan (61) and the second fan (62); The guide assembly (3) comprises a vertical guide rail portion (31) and a horizontal guide rail portion (32); the vertical guide rail portion (31) comprises a vertical guide rail (311) and a rotating shaft (312); and the horizontal guide rail portion (32) comprises a horizontal guide rail (321) and a guide sleeve (322); In the first working condition, the drive assembly (2) is in a retracted state, the guide sleeve (322) is located at one end of the horizontal guide rail (321) close to the drive assembly (2), the rotating shaft (312) is located at one end of the vertical guide rail (311) close to the horizontal guide rail (321), and the plane where the baffle (11) is located intersects with the axis of the vertical guide rail (311); In the second working condition, the guide sleeve (322) is located at an end of the horizontal guide rail (321) away from the drive assembly (2), the rotating shaft (312) is located at an end of the vertical guide rail (311) away from the horizontal guide rail (321), and the plane where the baffle (11) is located intersects with the axis of the horizontal guide rail (321).

2. The range hood according to claim 1, characterized in that: The guide assembly (3) comprises: vertical guide rail portion (31); A horizontal guide rail portion (32) is perpendicular to the vertical guide rail portion (31), wherein one end of the baffle assembly (1) is connected to the horizontal guide rail portion (32) and the other end is slidably connected to the vertical guide rail portion (31); When the driving assembly (2) drives one end of the baffle assembly (1) to move horizontally along the axis of the horizontal guide rail portion (32), the other end of the baffle assembly (1) moves vertically along the vertical guide rail portion (31), so that the baffle assembly (1) switches between the first working condition and the second working condition.

3. The range hood according to claim 2, characterized in that: The vertical guide rail portion (31) comprises: Two vertical guide rails (311), wherein the two vertical guide rails (311) are symmetrically arranged; A rotating shaft (312) is slidably connected between the two vertical guide rails (311), wherein the vertical guide rails (311) are provided with guide grooves (3110), and the rotating shaft (312) is inserted into the guide grooves (3110); The baffle assembly (1) comprises a baffle (11), one end of the baffle (11) is hinged to the horizontal guide rail portion (32), and the other end is rotatably connected to the rotating shaft (312).

4. The range hood according to claim 3, characterized in that: The horizontal guide rail portion (32) includes: A horizontal guide rail (321) is vertically arranged above the vertical guide rail (311); A guide sleeve (322) is sleeved on the outer periphery of the horizontal guide rail (321) to slide along the horizontal guide rail (321), wherein the guide sleeve (322) is respectively connected to the drive assembly (2) and the baffle assembly (1); When the driving assembly (2) drives the guide sleeve (322) to move, the baffle (11) drives the rotating shaft (312) to move up and down along the vertical guide rail (311).

5. The range hood according to claim 4, characterized in that: It also includes a limiting component (4), which includes: A first limit block group (41) is provided on the horizontal guide rail (321) to limit the range of motion of the guide sleeve (322); a second limit block group, arranged in the guide groove (3110) to limit the range of motion of the rotating shaft (312); The first limit block group (41) and the second limit block group are used to limit the baffle (11) to switch between the first working condition and the second working condition.

6. The range hood according to claim 1, characterized in that: The included angle between the plane where the baffle (11) is located and the axis of the vertical guide rail (311) is θ1, wherein 45°<θ1≤90°.

7. The range hood according to claim 1, characterized in that: The baffle (11) and the horizontal guide rail (321) are arranged at an angle, and the angle between the plane where the baffle (11) is located and the axis of the vertical guide rail (311) is θ2, wherein 0°≤θ2<20°.

8. The range hood according to claim 1, characterized in that: The smoke collecting chamber assembly (7) comprises: The smoke collecting chamber (71) comprises a first smoke collecting chamber air duct (711) corresponding to the first fan (61) and a second smoke collecting chamber air duct (712) corresponding to the second fan (62). A panel (72) connected to the smoke collecting chamber (71); One of the sub-cavities is connected to the first fan (61) and the first smoke collecting chamber air duct (711), and the other sub-cavity is connected to the second fan (62) and the second smoke collecting chamber air duct (712).

9. The range hood according to claim 8, characterized in that: The vertical guide rail portion (31) includes two vertical guide rails (311), one of the vertical guide rails (311) is fixedly connected to the box body (5), and the other vertical guide rail (311) is fixedly connected to the connection between the first fan (61) and the second fan (62); The horizontal guide rail (321) is fixed to the interior of the box (5), and the horizontal guide rail (321) is perpendicular to the vertical guide rail (311).

10. A range hood control method according to claim 9, characterized in that: include: The range hood is turned on, and the smoke collecting chamber assembly (7) is located at the smoke collecting chamber initial position in the accommodating chamber (100), and the baffle (11) is located at the baffle initial position in the accommodating chamber (100); Determining whether the cooker is cooking; if so, moving the smoke collecting chamber assembly (7) to a first smoke collecting chamber preset position outside the accommodating chamber (100), and simultaneously driving the baffle (11) to move to a first baffle preset position in the accommodating chamber (100) via the driving assembly (2) to divide the accommodating chamber (100) into two sub-cavities; When the smoke collecting chamber assembly (7) moves to the first smoke collecting chamber preset position, the panel (72) is opened and the fan assembly (6) is started to discharge the oil smoke; Determining whether cooking on the stove is finished, and if so, turning off the range hood, the fan assembly (6) and the panel (72); When the panel (72) is closed, the baffle (11) is restored to the baffle initial position, and the smoke collecting chamber assembly (7) is restored to the smoke collecting chamber initial position.

11. The range hood control method according to claim 10, characterized in that: When the cooker is cooking, after the smoke collecting chamber assembly (7) moves to the first smoke collecting chamber preset position, the baffle (11) is moved to the first baffle preset position by the driving assembly (2).

12. The range hood control method according to claim 10, characterized in that: When the cooker is cooking, after the smoke collecting chamber assembly (7) moves downward to a second smoke collecting chamber preset position, the baffle (11) is driven downward by the driving assembly (2), wherein the second smoke collecting chamber preset position is located between the smoke collecting chamber initial position and the first smoke collecting chamber preset position; and the movement speed of the baffle (11) is less than or equal to the movement speed of the smoke collecting chamber assembly (7).

13. The range hood control method according to claim 10, characterized in that: When the panel (72) is closed, after the baffle (11) moves to the baffle initial position, the smoke collecting chamber assembly (7) is moved to the smoke collecting chamber initial position of the accommodating chamber (100).

14. The range hood control method according to claim 10, characterized in that: When the panel (72) is closed, the smoke collecting chamber assembly (7) starts to move after the baffle (11) moves to a second baffle preset position, wherein the second baffle preset position is located between the baffle initial position and the first baffle preset position; and the movement speed of the baffle (11) is greater than or equal to the movement speed of the smoke collecting chamber assembly (7).

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