Air inlet structure and range hood

Abstract

The application relates to an air inlet structure and an extractor hood. The air inlet structure comprises a box body, a driving member, a smoke baffle and side baffles. An air inlet is formed in the front side of the box body. The smoke baffle is hinged to the box body. The driving member is connected with the smoke baffle to drive the smoke baffle to switch between an open state and a closed state. Two side baffles are movably connected to the two sides of the smoke baffle along the width direction of the box body. In the closed state, the side baffles are located inside the box body. In the open state, the smoke baffle and the side baffles extend to the front side of the box body to form a smoke collection cover in front of the air inlet. During the switching process of the smoke baffle between the open state and the closed state, the bottom surface of the side baffle is always inclined downward from front to back along the front-back direction. Based on the inclined posture, the oil attached to the surface of the side baffle will flow backward along the bottom surface under the action of gravity and finally gather in the box body, so that the cleaning trouble and the health hazard caused by the oil dripping to the cooking table or outside the machine body are effectively avoided.

Description

Technical Field

[0001] This invention relates to the technical field of range hoods, and in particular to an air intake structure and a range hood. Background Technology

[0002] Currently available ultra-thin, low-profile range hoods have a relatively thin casing, typically using the cavity formed between the baffle and the casing as the air inlet for fume extraction. However, this ultra-thin, low-profile structure means the air inlet is close to the wall with a large open area. In actual operation, the airflow velocity at the inlet is often insufficient, limiting the range of the negative pressure zone. Consequently, their ability to capture and handle sudden or intense cooking fumes is not ideal.

[0003] In response, some range hoods now opt to fix side baffles to the side of the smoke baffle, so that when the smoke baffle is opened, the smoke baffle and the side baffle can form a smoke collection hood structure, which helps to prevent the airflow from dissipating too much, thereby optimizing the smoke extraction effect to a certain extent.

[0004] However, when the range hood is closed (the baffle flips back to the closed state), the oil on the side baffle, which is rigidly fixed and rotates at a large angle along with the baffle, tends to gather and roll to one side and eventually drip onto the stove or into the machine body when the side baffle is flipped inward, causing cleaning problems and hygiene hazards. Summary of the Invention

[0005] Therefore, it is necessary to address the hygiene hazard caused by oil dripping in current range hoods designed to improve smoke extraction efficiency, and to provide an air intake structure and range hood that can optimize smoke extraction without creating additional hygiene hazards.

[0006] An air intake structure includes a housing, a drive unit, a smoke baffle, and side baffles. An air inlet is provided on the front side of the housing. The smoke baffle is hinged to the housing. The drive unit is connected to the smoke baffle to drive the smoke baffle to switch between an open state and a closed state. The smoke baffle is movably connected to a side baffle on each side along the width direction of the housing. In the closed state, the side baffle is located inside the housing; in the open state, the smoke baffle and the side baffle extend to the front of the housing to form a smoke hood in front of the air inlet; during the switching between the open and closed states, the bottom surface of the side baffle always gradually slopes downward from front to back in the front-back direction.

[0007] In one embodiment, during the switching process from the open state to the closed state of the smoke baffle, the tilt angle of the bottom surface of the side baffle first decreases and then increases.

[0008] In one embodiment, the air intake structure further includes driven components corresponding to the side baffles. The driven components include a first driven rod and a second driven rod. The smoke baffle, the first driven rod, the second driven rod, and the bottom wall of the housing are hinged in sequence. The side baffles are fixed to the corresponding first driven rods.

[0009] In one embodiment, the air intake structure further includes a lower baffle fixed to the second driven rod and having a lower air intake. In the open state, the lower baffle is vertical and blocks the lower half of the air intake.

[0010] In one embodiment, the air intake structure satisfies: -30°≤ ≤30° Where L is the length of the side baffle. The angle between the side baffle and the air inlet structure in the front-to-back direction when the structure is in the closed state. The angle between the side baffle and the air inlet structure in the non-closed state is the angle in the front-to-back direction. and The displacement of the hinge point between the first driven rod and the second driven rod along the front-to-back direction and the vertical direction during the process from the open state to the closed state. and The displacement of the hinge point between the first driven rod and the smoke baffle along the front-to-back direction and the vertical direction during the process from the open state to the closed state.

[0011] In one embodiment, the smoke baffle includes a plate body and connecting rods fixed to both sides of the plate body along the width direction. The connecting rods are hinged to the inner wall of the front side of the housing. The driving member is a push rod, with its fixed end hinged to the inner wall of the housing and its driving end hinged to one of the connecting rods.

[0012] In one embodiment, the first hinge point of the connecting rod is located between the second hinge point and the fixed point, and the distance between the first hinge point and the fixed point is greater than the distance between the first hinge point and the second hinge point. The first hinge point is the hinge position between the connecting rod and the housing, the second hinge point is the hinge position between the connecting rod and the driving member, and the fixed point is the fixed position between the connecting rod and the plate.

[0013] In one embodiment, the side baffle is U-shaped with the opening facing upwards, and the connecting rod and the first driven rod are at least partially located inside the corresponding side baffle.

[0014] In one embodiment, the air intake structure further includes an air guide plate located on the lower side of the plate body in the open state. The two ends of the air guide plate are respectively fixed to the upper end of the inner side of the two side baffles along the width direction. In the open state, the air guide plate and the plate body form an angle with the opening facing backward.

[0015] In one embodiment, the side baffle is located on the inner side of the plate surface along the width direction, and its upper end is inclined inward along the width direction.

[0016] This application also provides a range hood, including the aforementioned air intake structure.

[0017] The aforementioned air intake structure, through the combination of the baffle and the side baffles on both sides, can form an outward-expanding smoke collection hood, thereby extending the negative pressure zone directly above the cooking area to optimize the smoke extraction effect. By movably connecting the side baffle to the baffle with corresponding mechanical constraints, during the switching process from the open to the closed state, the bottom surface of the side baffle always gradually tilts downward from front to back in the front-to-back direction. Based on this tilting posture, the oil adhering to the surface of the side baffle will flow backward along the bottom surface under the action of gravity and inertia and eventually converge into the inside of the housing for collection, effectively avoiding the cleaning trouble and hygiene hazards caused by oil dripping onto the stove or outside the machine. In addition, during the switching process from the open to the closed state, the tilt angle of the bottom surface of the side baffle first decreases and then increases, which can further optimize the oil collection effect and anti-dripping performance. Attached Figure Description

[0018] Figure 1 This is a perspective view of the air inlet structure of this application in the open state; Figure 2 This is a perspective view of the air inlet structure of this application in the closed state; Figure 3 for Figure 1 A three-dimensional view of the central air guide plate, side baffles, and the rear of one side of the housing; Figure 4 for Figure 2 A stereoscopic view from a rear-view angle; Figure 5 for Figure 4 A 3D view of the hidden portion of the box; Figure 6 for Figure 1 Enlarged view of the center smoke baffle, air guide plate, and side baffle; Figure 7 This is a schematic diagram of the driven component of the air intake structure in the open state. Figure 8 This is a schematic diagram of the driven component of the air intake structure in the closed state.

[0019] Reference numerals: 10, housing; 11, air inlet; 20, driving component; 30, smoke baffle; 31, plate; 32, connecting rod; 321, first hinge point; 322, second hinge point; 323, fixing point; 40, side baffle; 50, driven component; 51, first driven rod; 52, second driven rod; 60, lower baffle; 61, lower air inlet; 70, air guide plate. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, 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 this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, this application first provides an air inlet structure, including a housing 10, a driving member 20, a smoke baffle 30 and a side baffle 40. An air inlet 11 is provided on the front side of the housing 10. The smoke baffle 30 is hinged to the housing 10. The driving member 20 is disposed inside the housing 10 and its driving end is connected to the smoke baffle 30 to drive the smoke baffle 30 to switch between an open state and a closed state. A side baffle 40 is movably connected to each side of the smoke baffle 30 along the width direction of the housing 10. In the closed state, the smoke baffle 30 closes the air inlet 11, and the side baffles 40 are located inside the housing 10. In the open state, the smoke baffle 30 and the two side baffles 40 extend through the air inlet 11 to the front of the housing 10 to form a smoke hood that blocks the airflow from spreading upward and to both sides in the width direction in front of the air inlet 11. During the switching between the open and closed states of the smoke baffle 30, the bottom surface of the side baffles 40 always gradually tilts downward from front to back in the front-back direction.

[0027] In this application, the combination of the baffle plate 30 and the side baffles 40 on both sides can form an outward-expanding smoke hood, thereby extending the negative pressure zone to directly above the cooking area to optimize the smoke extraction effect. By movably connecting the side baffles 40 to the baffle plate 30 with corresponding mechanical constraints, during the switching process of the baffle plate 30 from the open state to the closed state, the bottom surface of the side baffles 40 always gradually tilts downward from front to back in the front-back direction. Based on this tilting posture, the oil adhering to the surface of the side baffles 40 will flow backward along the bottom surface under the action of gravity and motion inertia and eventually converge into the inside of the housing 10 for collection, effectively avoiding the cleaning trouble and hygiene hazards caused by oil dripping onto the stove or outside the machine.

[0028] Specifically, in the open state, the smoke baffle 30 and the side baffles 40 on both sides form an inverted U-shaped three-sided enclosure in front of the air inlet 11, thereby forming a forward-extending smoke hood that forces the fumes to be drawn into the air inlet 11 in a directional manner. The smoke baffle 30 can block the airflow from spreading upward, while the side baffles 40 on both sides can block the airflow from escaping to both sides in the width direction.

[0029] In some embodiments, the bottom surface of the side baffle 40 can be an arc surface, a slope surface, or a spliced ​​surface, as long as the bottom surface is always gradually inclined downwards from front to back in the front-to-back direction during the smoke baffle 30 process.

[0030] In some embodiments, during the switching between the open and closed states of the smoke baffle 30, the vertical projection of the bottom end of the side baffle 40 is always located inside the housing 10, so that no matter what state the smoke baffle 30 is in, the oil on the side baffle 40 can flow along the bottom surface of the side baffle 40 to the inside of the housing 10 for recycling under the action of gravity, further avoiding the possibility of oil dripping.

[0031] In some embodiments, during the switching process from the open state to the closed state of the smoke baffle 30, the tilt angle of the bottom surface of the side baffle 40 first decreases and then increases, further optimizing the oil collection effect and anti-drip performance.

[0032] Specifically, when the smoke baffle 30 begins to flip and close, the tilt angle of the bottom surface of the side baffle 40 gradually decreases, which reduces the flow speed of the oil adhering to the bottom surface under the action of gravity, thus preventing the oil from splashing, overflowing or dripping due to excessive flow speed or excessive angle. As the smoke baffle 30 continues to flip and retract, the tilt angle of the bottom surface increases, allowing the collected oil to accelerate backward under the action of gravity and motion inertia, and finally flow smoothly back to the oil collection area inside the box 10 for collection.

[0033] This process of first decreasing and then increasing the angle ensures the stability and controllability of the oil flow in the initial stage of shutting off, and also ensures that the oil can quickly and thoroughly flow back into the housing 10 in the later stage of shutting off. This effectively prevents the oil from lingering on the side baffle 40 or dripping onto the stove, significantly improving the hygiene and ease of cleaning of the range hood.

[0034] Please combine Figure 3 , Figure 4 as well as Figure 5 As shown, in some embodiments, the air intake structure also includes two sets of driven components 50 corresponding to the two side baffles 40 respectively. The driven components 50 include a first driven rod 51 and a second driven rod 52. The smoke baffle 30, the first driven rod 51, the second driven rod 52 and the inner bottom wall of the housing 10 are hinged in sequence, and the side baffles 40 are fixed to the corresponding first driven rod 51.

[0035] The smoke baffle 30, the first driven rod 51, the second driven rod 52, and the inner bottom wall of the housing 10 together form a planar four-bar linkage. When the smoke baffle 30 opens or closes, it drives the first driven rod 51 to move. The movement of the first driven rod 51 is simultaneously constrained by the second driven rod 52. The other end of the second driven rod 52 is connected to a fixed point 323 (the inner bottom wall of the housing 10), which restricts the height and angle of the movement trajectory of the end of the first driven rod 51 (i.e., the point connected to the side baffle 40), thereby restricting the movement trajectory and deflection angle of the first driven rod 51. Since the side baffle 40 is fixed to the corresponding first driven rod 51, the movement trajectory and deflection angle of the side baffle 40 are restricted, ensuring that the bottom surface of the side baffle 40 always gradually slopes downward from front to back in the front-to-back direction.

[0036] By limiting the geometry of this planar four-bar linkage, a reliable, mechanically enforced constraint is provided, which ensures that the bottom surface of the side baffle 40 always gradually tilts downwards from front to back in the front-to-back direction during the opening and closing of the smoke baffle 30.

[0037] It is worth mentioning that the smoke baffle 30, the first driven rod 51, the second driven rod 52, and the inner bottom wall of the housing 10 are hinged in sequence. Adjacent components can be directly hinged, or they can be connected by one or more intermediate components. For example, there is a third connecting member between the smoke baffle 30 and the first driven rod 51. The smoke baffle 30 and the first driven rod 51 are respectively hinged to the third connecting member, or one of the smoke baffle 30 and the first driven rod 51 is hinged to the third connecting member, and the other is fixed to the third connecting member.

[0038] Of course, in some other embodiments, the side baffle 40 can also constrain the movement trajectory and deflection angle through other structures, as long as the bottom surface of the side baffle 40 is always gradually tilted downward from front to back in the front-back direction. This application will not give examples of each of these.

[0039] In addition, when optimizing the smoke collection structure of existing range hoods, if an independent side air inlet needs to be designed at the bottom of the air inlet, a separate bottom air inlet plate and an additional drive mechanism are often required, resulting in a complex structure, increased costs, and cumbersome control logic.

[0040] In this regard, please refer to Figure 1 as well as Figure 3 As shown, in some embodiments, the air intake structure also includes a lower baffle 60 fixed to the second driven rod 52 and having a lower air inlet 61. In the open state, the lower baffle 60 is vertical and blocks the lower half of the air inlet 11.

[0041] In this application, the coordinated movement of the smoke baffle 30, the side baffle 40 and the lower baffle 60 is achieved through the linkage of the driven component 50. Only one power source, the drive component 20, is needed to realize the synchronous action of multiple components. There is no need to set up a separate drive device for the lower baffle 60, which significantly simplifies the product structure and reduces manufacturing and maintenance costs.

[0042] Specifically, when the drive unit 20 drives the smoke baffle 30 to switch from the closed state to the open state, the first driven rod 51 drives the side baffle 40 to extend, and at the same time, the first driven rod 51 drives the lower baffle 60 to flip and block the lower half of the air inlet 11 through the second driven rod 52, forming a smoke hood with a partial blocking structure at the bottom together with the smoke baffle 30 and the side baffle 40.

[0043] This design divides the air inlet 11 into two sections based on height: the upper section is the smoke hood area formed by the outwardly expanding smoke baffle 30 and the side baffle 40, while the lower section is a low-level air intake channel provided by the lower air inlet 61 opened on the lower baffle 60. The lower air intake is designed to increase the air intake area and extend the negative pressure zone downward while maintaining the effective blocking of oil fumes at the bottom of the smoke hood. This allows for earlier capture of oil fumes rising from the pan surface during the initial cooking stage, effectively improving the range hood's ability to extract and exhaust low-level and sudden bursts of oil fumes.

[0044] It is easy to understand that the upper and lower dual air inlets can work together. The upper fume hood area is responsible for the main extraction of oil fumes, while when a large amount of oil fumes are generated instantly, such as during stir-frying, the lower air inlet 61, located at a lower position, can contact the newly generated and rising oil fume column earlier and at a closer distance, and quickly guide it upward into the main suction area, thereby significantly improving the capture response speed and efficiency.

[0045] Furthermore, when cooking with two (or more) burners simultaneously, the resulting range of fumes is larger. This wide vertical airflow coverage more effectively captures the rising fumes from both cookware, as well as the area between them, improving the ability to capture fumes from a wide range of sources.

[0046] Furthermore, in some embodiments, in the open state, the top of the lower baffle 60 is flush with the bottom surface of the side baffle 40, thereby more clearly distinguishing the upper and lower air intake positions. While preventing the oil fumes from escaping laterally from the upper air intake position through the side baffle 40, the side baffle 40 avoids the possible impact on the air intake of the lower air intake position, reducing the possibility of vortex generation.

[0047] Please combine Figure 7 as well as Figure 8 As shown, in some embodiments, the air intake structure satisfies: -30°≤ ≤30° Where L is the length of the side baffle 40. The angle between the side baffle 40 and the air inlet structure in the front-to-back direction when the structure is closed. The angle between the side baffle 40 and the air intake structure in the front-to-back direction when the side baffle 40 is not closed. and This refers to the displacement of the hinge point between the first driven rod 51 and the second driven rod 52 along the front-to-back direction and the vertical direction during the process from the open state to the closed state. and The displacement of the hinge point between the first driven rod 51 and the smoke baffle 30 in the front-to-back direction and the vertical direction during the process from the open state to the closed state.

[0048] This is understandable. - This refers to the deflection of the side baffle 40 in any non-closed state compared to the closed state. In this embodiment, by controlling the deflection of the side baffle 40 within ±30°, the deflection is relatively small, and the overall movement of the side baffle 40 is relatively smooth, further optimizing the anti-dripping effect.

[0049] Specifically, on the one hand, since the bottom surface of the side baffle 40 needs to always maintain an inclined state with the front higher than the rear to guide the oil backflow, if the deflection angle changes too much (such as exceeding 30°), the bottom surface may momentarily become horizontal or even tilted forward during the state switching process, causing the oil to drip forward. Limiting the angle difference to within 30° ensures that the bottom surface maintains a stable backward tilting trend throughout the entire movement trajectory, satisfying the constraint condition of always gradually tilting downward from front to back in the front-rear direction.

[0050] On the other hand, during the switching process from the open state to the closed state, the tilt angle of the bottom surface of the side baffle 40 first decreases and then increases. Combined with the ±30 degree deflection range limitation, the tilt angle of the side baffle 40 is appropriately reduced in the initial stage of closing, and the oil flow rate is steadily reduced to avoid splashing. In the later stage of closing, the tilt angle of the side baffle 40 is appropriately increased, and the oil is guided into the tank 10 by the gravity component and motion inertia.

[0051] Furthermore, when the bottom surface of the side baffle 40 is not planar (e.g., arc surface, curved surface, etc.), the side baffle 40 in the above-mentioned parameters of the side baffle 40 can be regarded as the line connecting the two hinge points mentioned above, namely the hinge point between the first driven rod 51 and the second driven rod 52, and the line connecting the hinge point between the first driven rod 51 and the smoke baffle 30.

[0052] Furthermore, in some embodiments, the smoke baffle 30 is in a vertical position when closed; and / or, the lower baffle 60 is in a vertical position when open.

[0053] In some other embodiments, in the closed state, the lower end of the smoke baffle 30 is tilted backward (i.e., tilted inward toward the housing 10); and / or, in the open state, the lower end of the lower baffle 60 is tilted backward.

[0054] Please combine Figure 1 , Figure 3 as well as Figure 5 As shown, in some embodiments, the side baffle 40 is U-shaped with the opening facing upwards, and the connecting rod 32 and the first driven rod 51 are at least partially located inside the corresponding side baffle 40, so as to separate the oil inlet area from the mechanical structure activity area by the side baffle 40, reduce the accumulation of oil on the connecting rod 32 and the first driven rod 51, thereby reducing the required cleaning cycle and extending the service life of the air inlet structure.

[0055] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the smoke baffle 30 includes a plate body 31 and connecting rods 32 fixed to both sides of the plate body 31 along the width direction. The connecting rods 32 are hinged to the inner wall of the front side of the housing 10. The driving member 20 is a push rod, with its fixed end hinged to the inner wall of the housing 10 and its driving end hinged to one of the connecting rods 32.

[0056] Furthermore, in some embodiments, the first hinge point 321 of the connecting rod 32 is located between the second hinge point 322 and the fixed point 323, and the distance between the first hinge point 321 and the fixed point 323 is greater than the distance between the first hinge point 321 and the second hinge point 322. The first hinge point 321 is the hinge position between the connecting rod 32 and the housing 10, the second hinge point 322 is the hinge position between the connecting rod 32 and the driving member 20, and the fixed point 323 is the fixed position between the connecting rod 32 and the plate 31.

[0057] Specifically, when the push rod extends or retracts, it pushes or pulls the connecting rod 32 through the second hinge point 322. Since the connecting rod 32 moves with the first hinge point 321 as a fixed fulcrum, and since the second hinge point 322 is closer to the first hinge point 321, while the fixed point 323 of the plate 31 is relatively far from the first hinge point 321, the small stroke applied by the push rod at the second hinge point 322 can be converted into a larger movement of the fixed point 323 through the lever amplification effect. Thus, the opening and closing of the smoke baffle 30 can be achieved within the small space inside the ultra-thin range hood housing 10.

[0058] Please combine Figure 1 , Figure 5 as well as Figure 6 As shown, in some embodiments, the air intake structure also includes an air guide plate 70 located on the lower side of the plate 31 in the open state. The two ends of the air guide plate 70 are respectively fixed to the upper end of the inner side of the two side baffles 40 along the width direction. In the open state, the air guide plate 70 and the plate 31 form an angle with the opening facing backward.

[0059] The air guide plate 70 is fixedly connected to the upper end of the inner side panel of the two side baffles 40 at both ends, forming a transverse support frame to improve the installation stability of the side baffles 40. At the same time, when cooking fumes rise naturally, guided by the inclined surface of the air guide plate 70, the airflow is divided into two layers. The upper layer of airflow directly impacts the inclined surface of the air guide plate 70 and is forced to change direction, accelerating along the upper surface of the air guide plate 70 towards the air inlet 11. In addition, due to the angle between the air guide plate 70 and the smoke baffle 30, a gradually narrowing channel is formed at the air inlet 11. The lower layer of airflow accelerates upward under the Venturi effect of the gradually narrowing channel, preventing it from accumulating and escaping at the bottom edge of the air inlet 11.

[0060] Please combine Figure 1 as well as Figure 8 As shown, in some embodiments, the side baffle 40 is located on the inner side of the plate surface along the width direction, and its upper end is inclined inward along the width direction so that the angle between the air guide plate 70 and the smoke baffle 30 can be naturally formed, ensuring a smooth transition of the airflow surface.

[0061] This application also provides a range hood, including the aforementioned air intake structure.

[0062] The aforementioned range hood can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An air intake structure, characterized in that, The device includes a housing (10), a drive unit (20), a smoke baffle (30), and side baffles (40). The front side of the housing (10) is provided with an air inlet (11). The smoke baffle (30) is hinged to the housing (10). The drive unit (20) is connected to the smoke baffle (30) to drive the smoke baffle (30) to switch between an open state and a closed state. The smoke baffle (30) is movably connected to a side baffle (40) on each side along the width direction of the housing (10). In the closed state, the side baffle (40) is located inside the housing (10); in the open state, the smoke baffle (30) and the side baffle (40) extend to the front of the housing (10) to form a smoke hood in front of the air inlet (11); during the switching between the open state and the closed state, the bottom surface of the side baffle (40) is always gradually tilted downward from front to back in the front-back direction.

2. The air inlet structure according to claim 1, characterized in that, During the switching process from the open state to the closed state of the smoke baffle (30), the tilt angle of the bottom surface of the side baffle (40) first decreases and then increases.

3. The air inlet structure according to claim 1, characterized in that, The air intake structure also includes driven components (50) corresponding to the side baffle (40). The driven components (50) include a first driven rod (51) and a second driven rod (52). The smoke baffle (30), the first driven rod (51), the second driven rod (52) and the inner bottom wall of the box (10) are hinged in sequence. The side baffle (40) is fixed to the corresponding first driven rod (51).

4. The air inlet structure according to claim 3, characterized in that, The air intake structure also includes a lower baffle (60) fixed to the second driven rod (52) and having a lower air inlet (61). In the open state, the lower baffle (60) is vertical and blocks the lower half of the air inlet (11).

5. The air inlet structure according to claim 3, characterized in that, The air intake structure satisfies: -30°≤ ≤30°， Where L is the length of the side baffle (40), The angle between the side baffle (40) and the air inlet structure in the front-to-back direction when the structure is in the closed state. The angle between the side baffle (40) and the air inlet structure in the front-to-back direction when the side baffle (40) is in the non-closed state. H1 represents the displacement of the hinge point between the first driven rod (51) and the second driven rod (52) in the front-to-back direction and the vertical direction during the process from the open state to the closed state. and The displacement of the hinge point between the first driven rod (51) and the smoke baffle (30) in the front-to-back direction and the vertical direction during the process from the open state to the closed state.

6. The air inlet structure according to claim 3, characterized in that, The smoke baffle (30) includes a plate (31) and connecting rods (32) fixed to both sides of the plate (31) along the width direction. The connecting rods (32) are hinged to the inner wall of the front side of the box (10). The driving member (20) is a push rod, with its fixed end hinged to the inner wall of the box (10) and its driving end hinged to one of the connecting rods (32).

7. The air inlet structure according to claim 6, characterized in that, The first hinge point (321) of the connecting rod (32) is located between the second hinge point (322) and the fixed point (323), and the distance between the first hinge point (321) and the fixed point (323) is greater than the distance between the first hinge point (321) and the second hinge point (322). The first hinge point (321) is the hinge position between the connecting rod (32) and the housing (10), the second hinge point (322) is the hinge position between the connecting rod (32) and the driving member (20), and the fixed point (323) is the fixed position between the connecting rod (32) and the plate (31).

8. The air inlet structure according to claim 6, characterized in that, The side baffle (40) is U-shaped with the opening facing upwards, and the connecting rod (32) and the first driven rod (51) are at least partially located inside the corresponding side baffle (40).

9. The air inlet structure according to claim 8, characterized in that, The air intake structure also includes an air guide plate (70) located on the lower side of the plate (31) in the open state. The two ends of the air guide plate (70) are respectively fixed to the upper end of the inner side of the two side baffles (40) along the width direction. In the open state, the air guide plate (70) and the plate (31) form an angle with the opening facing backward.

10. The air inlet structure according to claim 9, characterized in that, The side baffle (40) is located on the inner side of the plate surface along the width direction, and its upper end is inclined inward along the width direction.

11. A range hood, characterized in that, Includes the air intake structure as described in any one of claims 1 to 10.

Images