Range hood

Abstract

This utility model discloses a range hood, comprising: a housing with an air intake; and an opening / closing device disposed within the housing. The opening / closing device includes: a drive mechanism, a first opening / closing plate, and a second opening / closing plate. The first and second opening / closing plates are rotatably disposed within the housing and are both connected to the drive mechanism. Under the drive of the drive mechanism, the first and second opening / closing plates rotate in opposite directions, thereby selectively opening and closing the air intake. Thus, the opening / closing device of this range hood can close the air intake, effectively blocking oil from entering the housing, thereby improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of smoke hood technology, and in particular to a smoke hood. Background Technology

[0002] The side-suction air vent of a side-suction range hood is located in front of the user. When cooking, the user can see the inside of the casing directly through the side-suction air vent, especially the back panel. After long-term use, grease will accumulate on the back panel. From the user's side, the grease on the inner surface of the back panel can be seen, which affects the appearance and reduces the user experience. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a range hood whose opening and closing device can close the air intake, thereby blocking the oil inside the casing and improving the user experience.

[0004] A range hood according to an embodiment of the present invention includes: a housing with an air intake; and an opening and closing device disposed within the housing. The opening and closing device includes: a driving mechanism, a first opening and closing plate, and a second opening and closing plate. The first and second opening and closing plates are rotatably disposed within the housing. Both the first and second opening and closing plates are connected to the driving mechanism. Under the driving action of the driving mechanism, the first and second opening and closing plates rotate in opposite directions, thereby selectively opening and closing the air intake.

[0005] Therefore, the opening and closing device of this range hood can close the air intake, which can block the oil inside the casing and thus improve the user experience.

[0006] According to some embodiments of the present invention, the first opening and closing plate is provided with a first rotating part, and the first opening and closing plate is rotatably disposed on the housing through the first rotating part; the second opening and closing plate is provided with a second rotating part, and the second opening and closing plate is rotatably disposed on the housing through the second rotating part.

[0007] According to some embodiments of the present invention, the driving mechanism includes: a driving member disposed within the housing; a rocker arm with a first end connected to the driving member; and a rotating rod assembly rotatably connected between the rocker arm, the first opening / closing plate, and the second opening / closing plate. The driving member drives the rotating rod assembly through the rocker arm, and the rotating rod assembly drives the first opening / closing plate and the second opening / closing plate to rotate in opposite directions.

[0008] According to some embodiments of the present invention, the rotating rod assembly includes: a first rotating rod, one end of which is rotatably connected to the second end of the rocker arm and the other end of which is rotatably connected to the first opening and closing plate; a second rotating rod, one end of which is rotatably connected to the second end of the rocker arm along with one end of the first rotating rod, and the other end of which is rotatably connected to the second opening and closing plate, wherein the first opening and closing plate and the second opening and closing plate are respectively located on both sides of the width direction of the air intake.

[0009] According to some embodiments of the present invention, the first opening and closing plate includes: a first main body; a first connecting plate, the first connecting plate being connected to the side of the first main body away from the second opening and closing plate and bent relative to the first main body, the connection between the first main body and the first connecting plate being rotatably disposed in the housing, and the other end of the first rotating rod being rotatably connected to the first connecting plate; the second opening and closing plate includes: a second main body, the second main body and the first main body being disposed opposite to each other in the width direction of the air intake; a second connecting plate, the second connecting plate being connected to the side of the second main body away from the first opening and closing plate and bent relative to the second main body, the connection between the second main body and the second connecting plate being rotatably disposed in the housing, and the other end of the second rotating rod being rotatably connected to the second connecting plate.

[0010] According to some embodiments of the present invention, the first rotating rod and the second rotating rod are located on both sides of the rocker arm in the thickness direction.

[0011] According to some embodiments of the present invention, a first abutting surface is formed on the side of the first opening and closing plate near the second opening and closing plate, and a second abutting surface is formed on the side of the second opening and closing plate near the first opening and closing plate. When the first opening and closing plate and the second opening and closing plate close the air intake, the first abutting surface and the second abutting surface abut against each other.

[0012] According to some embodiments of the present invention, the housing is provided with an oil-blocking flange protruding towards the inside of the housing at the air intake, the first opening and closing plate is provided with a first clearance groove, and the second opening and closing plate is provided with a second clearance groove. When the first opening and closing plate and the second opening and closing plate close the air intake, at least a portion of the oil-blocking flange is respectively disposed in the first clearance groove and the second clearance groove.

[0013] According to some embodiments of the present invention, the range hood further includes a controller, which is electrically connected to the drive mechanism to control the opening and closing angles of the first opening and closing plate and the second opening and closing plate through the drive mechanism.

[0014] According to some embodiments of the present invention, the driving mechanism is disposed on one or both sides of the length direction of the first opening and closing plate and the second opening and closing plate.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural schematic diagram of a range hood according to an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A magnified view of region A in the middle;

[0019] Figure 3 yes Figure 1 A magnified view of region B in the middle;

[0020] Figure 4 This is an isometric drawing of a range hood according to an embodiment of the present utility model;

[0021] Figure 5 This is a side view of the closed air intake of a range hood according to an embodiment of the present utility model;

[0022] Figure 6 yes Figure 5 A magnified view of region C in the middle;

[0023] Figure 7 This is a side view of the air intake of a range hood opened according to an embodiment of the present utility model;

[0024] Figure 8 yes Figure 7 A magnified view of region D in the middle;

[0025] Figure 9 This is a schematic diagram of a range hood with an air intake according to an embodiment of the present utility model;

[0026] Figure 10 This is an isometric view of a range hood with an air intake according to an embodiment of the present invention.

[0027] Figure label:

[0028] 100. Range hood;

[0029] 1. Housing; 11. Air intake;

[0030] 2. Opening and closing device; 21. Drive mechanism; 22. First opening and closing plate; 220. First abutting surface; 221. First rotating part; 222. First main body; 223. First connecting plate; 224. First clearance groove;

[0031] 23. Second opening and closing plate; 230. Second abutting surface; 231. Second rotating part; 232. Second main body; 233. Second connecting plate; 234. Second clearance groove;

[0032] 3. Drive components; 4. Rocker arm;

[0033] 5. Rotating rod assembly; 51. First rotating rod; 52. Second rotating rod;

[0034] 6. Oil baffle flange; 7. Mounting bracket; 8. Support legs. Detailed Implementation

[0035] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0036] The following is for reference. Figures 1-10 Description of a range hood 100 according to an embodiment of the present utility model.

[0037] Reference Figures 1-2 As shown, the range hood 100 of this utility model embodiment includes: a housing 1 and an opening / closing device 2. The housing 1 has an air intake 11. The opening / closing device 2 is disposed inside the housing 1 and includes: a drive mechanism 21, a first opening / closing plate 22, and a second opening / closing plate 23. The first opening / closing plate 22 and the second opening / closing plate 23 are rotatably disposed inside the housing 1. Both the first opening / closing plate 22 and the second opening / closing plate 23 are connected to the drive mechanism 21. Under the driving action of the drive mechanism 21, the first opening / closing plate 22 and the second opening / closing plate 23 rotate in opposite directions, thereby selectively opening and closing the air intake 11. The range hood 100 of this utility model is provided with the opening / closing device 2. When the range hood 100 is running, the opening / closing device 2 opens the air intake 11, allowing the range hood 100 to normally extract oil fumes. When the range hood 100 is turned off, the opening and closing device 2 closes the air intake 11, which can prevent the grease inside the range hood 100 from being seen through the air intake 11, keeping the range hood 100 looking nice and thus improving the user experience.

[0038] The opening and closing device 2 mainly consists of a drive mechanism 21, a first opening and closing plate 22, and a second opening and closing plate 23. The first and second opening and closing plates 22 and 23 are rotatably mounted at the air intake 11 of the housing 1. This allows the first and second opening and closing plates 22 and 23 to flexibly control the amount and direction of the oil fumes entering the air intake 11, thereby improving the efficiency of oil fume extraction. Furthermore, the first and second opening and closing plates 22 and 23 are arranged opposite each other in the width direction of the air intake 11, allowing the size of the air intake 11 to be changed by altering the opening and closing size of the first and second opening and closing plates 22 and 23 in the width direction of the air intake 11. The length direction of the air intake 11 can be left-right, and the width direction can be up-down.

[0039] Furthermore, both the first opening and closing plate 22 and the second opening and closing plate 23 are connected to the drive mechanism 21. The drive mechanism 21 can provide rotational force to the first opening and closing plate 22 and the second opening and closing plate 23, thereby facilitating the rotation of the first opening and closing plate 22 and the second opening and closing plate 23. It can also control the angle and direction of rotation of the first opening and closing plate 22 and the second opening and closing plate 23, thereby controlling the amount of oil fumes entering the air intake 11, and also realizing the opening or closing of the air intake 11.

[0040] Furthermore, driven by the drive mechanism 21, the first opening plate 22 and the second opening plate 23 rotate in opposite directions. That is, when the first opening plate 22 rotates counterclockwise, the second opening plate 23 rotates clockwise accordingly. This closes the air intake 11, preventing oil droplets from dripping from the inner wall of the casing 1 and also acting as a shield, thus avoiding the view of oil stains inside the casing 1 from the air intake 11 and improving the user experience. When the first opening plate 22 rotates clockwise, the second opening plate 23 rotates counterclockwise accordingly, opening the air intake 11. This allows indoor fumes to enter the casing 1, facilitating their exhaust.

[0041] Furthermore, when the first opening and closing plate 22 and the second opening and closing plate 23 are rotated to close, the edges of the first opening and closing plate 22 and the second opening and closing plate 23 fit tightly against each other, which can form a better seal. Compared with the situation where there are gaps between multiple plates, the first opening and closing plate 22 and the second opening and closing plate 23 can effectively reduce smoke leakage, thereby improving the overall sealing effect.

[0042] The first opening and closing plate 22 and the second opening and closing plate 23 can be arranged in the width direction of the air intake 11 and driven by a drive mechanism 21. They can achieve precise synchronous rotation and avoid misalignment or jamming of the first opening and closing plate 22 and the second opening and closing plate 23 due to transmission errors, thereby improving operational stability.

[0043] Moreover, the drive mechanism 21 can control the opening and closing angles of the first opening and closing plate 22 and the second opening and closing plate 23. When the oil fume concentration is low, the drive mechanism 21 can drive the first opening and closing plate 22 and the second opening and closing plate 23 to open at a larger angle, which can increase the opening of the air intake 11. Under the same suction capacity, the speed of the oil fume passing through the air intake 11 will be reduced. The lower wind speed will generate less turbulence and eddies, thereby reducing the noise generated by the rapid flow of air.

[0044] When the concentration of oil fumes is high, the drive mechanism 21 can drive the first opening plate 22 and the second opening plate 23 to open at a smaller angle, which can reduce the opening of the air intake 11. When the opening area of ​​the air intake 11 is reduced, the air velocity through the air intake 11 will increase under the same suction capacity (i.e. fan power). According to Bernoulli's principle, a higher air velocity can generate a larger negative pressure zone, thereby enhancing the ability to extract surrounding oil fumes. Thus, the smaller air intake 11 can quickly suck away the oil fumes.

[0045] Furthermore, since the first opening and closing plate 22 and the second opening and closing plate 23 are located at the air intake 11, the drive mechanism 21 can control the first opening and closing plate 22 and the second opening and closing plate 23 to rotate to different angles, thereby changing the angle of the oil fumes after entering the air intake 11 and guiding the direction of the oil fumes.

[0046] Therefore, the design of the opening and closing device 2 of the range hood 100 can close the air intake 11, thereby blocking the oil inside the casing 1 and improving the user experience.

[0047] According to some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the first opening and closing plate 22 is provided with a first rotating part 221, and the first opening and closing plate 22 is rotatably mounted on the housing 1 through the first rotating part 221. The second opening and closing plate 23 is provided with a second rotating part 231, and the second opening and closing plate 23 is rotatably mounted on the housing 1 through the second rotating part 231.

[0048] The first opening and closing plate 22 is provided with a first rotating part 221, which can be located at both ends of the first opening and closing plate 22 along its length. The first rotating part 221 acts as a pivot. Correspondingly, the housing 1 is provided with a support foot 8, and the first rotating part 221 passes through the support foot 8. In this way, the first rotating part 221 can be rotatably mounted on the support foot 8, which facilitates the rotation of the first opening and closing plate 22 on the housing 1. The first rotating part 221 has high strength, which can reduce deformation and also has wear-resistant properties, thereby extending the service life of the first opening and closing plate 22.

[0049] Similarly, the second opening and closing plate 23 is provided with a second rotating part 231. The second rotating part 231 can be provided at both ends of the length direction of the second opening and closing plate 23. The second rotating part 231 acts as a rotating shaft. Correspondingly, the housing 1 is provided with a support foot 8. The second rotating part 231 passes through the support foot 8 and can be rotatably provided on the support foot 8, thereby facilitating the rotation of the second opening and closing plate 23 on the housing 1. The second rotating part 231 has high strength, which can reduce deformation and also has wear-resistant properties, thereby extending the service life of the second opening and closing plate 23.

[0050] Furthermore, the first rotating part 221 and the second rotating part 231 are located on both sides of the air intake 11 in the width direction, and there is a certain distance between the first rotating part 221 and the second rotating part 231. This not only provides a larger rotation range for the first opening and closing plate 22 and the second opening and closing plate 23, but also avoids interference between the first opening and closing plate 22 and the second opening and closing plate 23 during rotation. In addition, the central axis of the first rotating part 221 and the central axis of the second rotating part 231 are parallel, thereby ensuring more precise positioning when the first opening and closing plate 22 and the second opening and closing plate 23 rotate synchronously.

[0051] According to some embodiments of this utility model, such as Figures 1-3 As shown, the drive mechanism 21 includes a drive member 3, a rocker arm 4, and a rotating rod assembly 5. The drive member 3 is disposed inside the housing 1. The first end of the rocker arm 4 is connected to the drive member 3. The rotating rod assembly 5 is rotatably connected between the rocker arm 4, the first opening and closing plate 22, and the second opening and closing plate 23. The drive member 3 drives the rotating rod assembly 5 through the rocker arm 4, and the rotating rod assembly 5 drives the first opening and closing plate 22 and the second opening and closing plate 23 to rotate in opposite directions.

[0052] The drive mechanism 21 mainly consists of a drive component 3, a rocker arm 4, and a rotating rod assembly 5. The drive component 3 is located inside the housing 1, which can prevent users from directly contacting the live drive component 3. The housing 1 can protect the drive component 3 and also provide sound insulation for the noise generated by the drive component 3.

[0053] Furthermore, the first end of the rocker arm 4 is connected to the drive member 3, which provides driving force to the rocker arm 4, thus facilitating the rotation of the rocker arm 4. The rotating rod assembly 5 is rotatably connected between the rocker arm 4, the first opening and closing plate 22, and the second opening and closing plate 23. The drive member 3 can drive the rotating rod assembly 5 to rotate through the rocker arm 4. Since the rotating rod assembly 5 is connected to the first opening and closing plate 22 and the second opening and closing plate 23 respectively, the rotating rod assembly 5 can transmit the power of the rocker arm 4 to the first opening and closing plate 22 and the second opening and closing plate 23 respectively. The first opening and closing plate 22 and the second opening and closing plate 23 can rotate in opposite directions, that is, the rotation directions of the first opening and closing plate 22 and the second opening and closing plate 23 are opposite, thereby realizing the opening or closing of the air intake 11.

[0054] Furthermore, the pivot position of the first opening and closing plate 22 is spaced apart from the connection position of the rotating rod assembly 5, so that the rotation position of the first opening and closing plate 22 and the connection position of the rotating rod assembly 5 are not on the same axis. This avoids the dead point position of the rotation of the first opening and closing plate 22, thereby facilitating the rotation of the first opening and closing plate 22 and preventing the first opening and closing plate 22 from getting stuck during rotation.

[0055] Similarly, the pivot position of the second opening and closing plate 23 is spaced apart from the connection position of the rotating rod assembly 5. This ensures that the rotational position of the second opening and closing plate 23 and the connection position of the rotating rod assembly 5 are not on the same axis. This avoids the dead point of the second opening and closing plate 23's rotation, facilitating its rotation and preventing jamming during rotation. The driving component 3 is a single unit, simplifying the structure of the driving mechanism 21 and reducing its cost.

[0056] Of course, the drive mechanism 21 can also be equipped with two drive components 3 at the same time. The two drive components 3 are then connected to the corresponding first opening and closing plate 22 and second opening and closing plate 23 through the intermediate structure, so that individual drive can be realized.

[0057] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the rotating rod assembly 5 includes: a first rotating rod 51 and a second rotating rod 52. One end of the first rotating rod 51 is rotatably connected to the second end of the rocker arm 4, and the other end of the first rotating rod 51 is rotatably connected to the first opening and closing plate 22. One end of the second rotating rod 52 is rotatably connected to the second end of the rocker arm 4, and the other end of the second rotating rod 52 is rotatably connected to the second opening and closing plate 23. The first opening and closing plate 22 and the second opening and closing plate 23 are respectively located on both sides of the width direction of the air intake 11.

[0058] Specifically, one end of the first rotating rod 51 and one end of the second rotating rod 52 are connected to the same position (such as the second end) of the rocker arm 4. The other end of the first rotating rod 51 is connected to the first opening and closing plate 22, and the other end of the second rotating rod 52 is connected to the second opening and closing plate 23. Since the first opening and closing plate 22 and the second opening and closing plate 23 are located on both sides of the width direction of the air intake 11, the other ends of the first rotating rod 51 and the other ends of the second rotating rod 52 are far apart from each other. Since the driving member 3 is connected to the first end of the rocker arm 4, when the driving member 3 rotates, it can cause the second end of the rocker arm 4 to have a downward swing tendency. When the second end of the rocker arm 4 presses down on one end of the first rotating rod 51 and the second connecting rod 52, the other ends of the first rotating rod 51 and the second connecting rod 52 are far apart from each other, so that the swing direction of the first rotating rod 51 and the second connecting rod 52 is opposite. At the same time, the first opening and closing plate 22 and the second opening and closing plate 23 rotate in opposite directions. Thus, the opposite ends of the first opening and closing plate 22 and the second opening and closing plate 23 are far apart from each other, thereby opening the air intake 11.

[0059] Conversely, when the rotation of the drive component 3 causes the second end of the rocker arm 4 to swing upward, the second end of the rocker arm 4 pulls one end of the first rotating rod 51 and the second connecting rod 52 upward, and the other ends of the first rotating rod 51 and the second connecting rod 52 move closer to each other, so that the swing directions of the first rotating rod 51 and the second connecting rod 52 are opposite. At the same time, the first opening and closing plate 22 and the second opening and closing plate 23 rotate in opposite directions, and the opposite ends of the first opening and closing plate 22 and the second opening and closing plate 23 move closer to each other, thereby closing the air intake 11.

[0060] Furthermore, the angle between the first rotating rod 51 and the second rotating rod 52 is an obtuse angle, and the angle between the second rotating rod 52 and the rocker arm 4 is an acute angle. When the air intake 11 needs to be opened to a certain angle, the drive mechanism 21 can drive the rocker arm 4 to rotate clockwise. The rocker arm 4 can drive the first rotating rod 51 and the second rotating rod 52 to rotate. In this way, the obtuse angle between the first rotating rod 51 and the second rotating rod 52 gradually increases, while the acute angle between the second rotating rod 52 and the rocker arm 4 gradually decreases, thereby making the air intake 11 gradually larger.

[0061] When the air intake 11 needs to be closed at a certain angle, the drive mechanism 21 can drive the rocker arm 4 to rotate counterclockwise. The rocker arm 4 can drive the first rotating rod 51 and the second rotating rod 52 to rotate. In this way, the obtuse angle between the first rotating rod 51 and the second rotating rod 52 gradually decreases, while the acute angle between the second rotating rod 52 and the rocker arm 4 gradually increases, thereby making the air intake 11 gradually smaller.

[0062] According to some embodiments of this utility model, such as Figure 2As shown, the first opening and closing plate 22 includes: a first main body 222 and a first connecting plate 223. The first connecting plate 223 is connected to the side of the first main body 222 away from the second opening and closing plate 23, and the first connecting plate 223 is bent relative to the first main body 222. The connection between the first main body 222 and the first connecting plate 223 is rotatably disposed on the housing 1. The other end of the first rotating rod 51 is rotatably connected to the first connecting plate 223.

[0063] The first opening and closing plate 22 is mainly composed of a first main body 222 and a first connecting plate 223. The first connecting plate 223 is connected to the side of the first main body 222 away from the second opening and closing plate 23. The first connecting plate 223 is provided so that it can be easily connected to the first rotating rod 51, thereby enabling the first rotating rod 51 to drive the first connecting plate 223 to rotate.

[0064] Furthermore, the first connecting plate 223 is bent relative to the first main board body 222, so that the first connecting plate 223 and the first main board body 222 are in an L-shape. This can shorten the distance between the first main board body 222 and the air intake 11, thereby enabling the first main board body 222 to open or close a portion of the air intake 11.

[0065] Furthermore, the connection point between the first main board body 222 and the first connecting plate 223 is rotatably mounted on the housing 1. This connection point is the axis of rotation for the first opening / closing plate 22. This balances the forces acting on the first opening / closing plate 22 and makes its rotation on the housing 1 more stable. Moreover, the other end of the first rotating rod 51 is rotatably connected to the first connecting plate 223. Thus, the other end of the first rotating rod 51 can drive the first connecting plate 223 to rotate, thereby enabling the rotation of the first opening / closing plate 22.

[0066] Furthermore, such as Figure 2 As shown, the second opening and closing plate 23 includes: a second main board body 232 and a second connecting plate 233. The second main board body 232 and the first main board body 222 are arranged opposite to each other in the width direction of the air intake 11. The second connecting plate 233 is connected to the side of the second main board body 232 away from the first opening and closing plate 22. Moreover, the second connecting plate 233 is bent relative to the second main board body 232. The connection between the second main board body 232 and the second connecting plate 233 is rotatably disposed on the housing 1. The other end of the second rotating rod 52 is rotatably connected to the second connecting plate 233.

[0067] Specifically, the second opening and closing plate 23 is mainly composed of the second main body 232 and the second connecting plate 233. The second connecting plate 233 is connected to the side of the second main body 232 away from the first opening and closing plate 22. The second connecting plate 233 is provided so that it can be easily connected to the second rotating rod 52, thereby enabling the second rotating rod 52 to drive the second connecting plate 233 to rotate.

[0068] Furthermore, the second connecting plate 233 is bent relative to the second main board body 232, so that the second connecting plate 233 and the second main board body 232 are in an L-shape. This can shorten the distance between the second main board body 232 and the air intake 11, thereby enabling the second main board body 232 to open or close another part of the air intake 11. In this way, the second main board body 232 and the first main board body 222 can work together to open or close the entire air intake 11.

[0069] Furthermore, the connection between the second main board 232 and the second connecting plate 233 is rotatably mounted on the housing 1. This connection is the axis of rotation for the second opening / closing plate 23. This balances the forces on the second opening / closing plate 23 and makes its rotation on the housing 1 more stable. Moreover, the other end of the second rotating rod 52 is rotatably connected to the second connecting plate 233, allowing the second connecting plate 233 to rotate, thus enabling the second opening / closing plate 23 to rotate.

[0070] According to some embodiments of this utility model, such as Figure 2 As shown, the first rotating rod 51 and the second rotating rod 52 are located on both sides of the rocker arm 4 in the thickness direction.

[0071] The first rotating rod 51 is located on one side of the rocker arm 4 in the thickness direction, and the second rotating rod 52 is located on the other side of the rocker arm 4 in the thickness direction. When the rocker arm 4 drives the first rotating rod 51 and the second rotating rod 52 to rotate, interference between the first rotating rod 51 and the second rotating rod 52 can be avoided, and friction between the first rotating rod 51 and the second rotating rod 52 during rotation can also be avoided.

[0072] Furthermore, the first rotating rod 51 and the second rotating rod 52 are located on both sides of the rocker arm 4 in the thickness direction, which can distribute the force more evenly and prevent the first rotating rod 51 and the second rotating rod 52 from bearing too much pressure at the same position of the rocker arm 4, thus avoiding damage. Moreover, when the rocker arm 4 drives the first rotating rod 51 and the second rotating rod 52 to rotate, the force applied by the rocker arm 4 to the first rotating rod 51 and the second rotating rod 52 can be more balanced.

[0073] According to some embodiments of this utility model, such as Figure 6As shown, a first abutting surface 220 is formed on the side of the first opening and closing plate 22 near the second opening and closing plate 23, and a second abutting surface 230 is formed on the side of the second opening and closing plate 23 near the first opening and closing plate 22. When the first opening and closing plate 22 and the second opening and closing plate 23 close the air intake 11, the first abutting surface 220 and the second abutting surface 230 abut against each other.

[0074] In this design, a first abutting surface 220 is formed on the side of the first hinged plate 22 closest to the second hinged plate 23. This reduces the distance between the first abutting surface 220 and the second hinged plate 23. The first abutting surface 220 is planar. Correspondingly, a second abutting surface 230 is formed on the side of the second hinged plate 23 closest to the first hinged plate 22. This reduces the distance between the second abutting surface 230 and the first hinged plate 22. The second abutting surface 230 is also planar. When the first hinged plate 22 and the second hinged plate 23 are close together... When the air intake vent 11 is closed, the first contact surface 220 and the second contact surface 230 abut against each other, which can increase the contact area between the first contact surface 220 and the second contact surface 230, thereby making the connection between the first contact surface 220 and the second contact surface 230 tighter, reducing the force between the first contact surface 220 and the second contact surface 230, making it more stable, and preventing oil fumes from flowing back into the room from the gap between the first contact surface 220 and the second contact surface 230.

[0075] Furthermore, both ends of the first abutting surface 220 and the second abutting surface 230 are provided with transition arcs. In this way, when the first abutting surface 220 and the second abutting surface 230 abut together, interference between the two ends of the first abutting surface 220 and the second abutting surface 230 can be avoided, and collision impact can also be avoided, thereby protecting the first opening plate 22 and the second opening plate 23.

[0076] Furthermore, both the first contact surface 220 and the second contact surface 230 are provided with elastic sealing strips. For example, the elastic sealing strips can be rubber strips or silicone strips. This can further enhance the sealing effect. Since the elastic sealing strips are elastic, they can deform and also buffer impact forces, thereby reducing noise, extending their service life, and reducing wear on the first contact surface 220 and the second contact surface 230.

[0077] According to some embodiments of this utility model, such as Figure 6 As shown, the housing 1 has an oil-blocking flange 6 protruding towards the inside of the housing 1 at the air intake 11. The first opening and closing plate 22 is provided with a first clearance groove 224, and the second opening and closing plate 23 is provided with a second clearance groove 234. When the first opening and closing plate 22 and the second opening and closing plate 23 close the air intake 11, at least part of the oil-blocking flange 6 is respectively provided in the first clearance groove 224 and the second clearance groove 234.

[0078] The casing 1 has an oil-blocking flange 6 protruding towards the interior of the casing 1 at the air intake 11. The oil-blocking flange 6 is arranged in a ring shape at the air intake 11 and can block oil, preventing oil droplets inside the casing 1 from dripping out of the air intake 11 and falling onto the stove in the room. In addition, the first opening and closing plate 22 is provided with a first clearance groove 224. When the first opening and closing plate 22 closes the air intake 11, the first clearance groove 224 can prevent the first clearance groove 224 from interfering with the oil-blocking flange 6. Similarly, the second opening and closing plate 23 is provided with a second clearance groove 234. When the second opening and closing plate 23 closes the air intake 11, the second clearance groove 234 can prevent the second clearance groove 234 from interfering with the oil-blocking flange 6.

[0079] Furthermore, at least some of the oil-blocking flanges 6 are respectively disposed in the first clearance groove 224 and the second clearance groove 234. When the first opening and closing plate 22 and the second opening and closing plate 23 close the air intake 11, the first clearance groove 224 and the oil-blocking flange 6 can form a sealed space. Correspondingly, the second clearance groove 234 and the oil-blocking flange 6 can also form a sealed space, thereby preventing the oil droplets falling on the oil-blocking flange 6 from overflowing.

[0080] According to some embodiments of the present invention, the smoke hood 100 further includes a controller, which is electrically connected to the drive mechanism 21, so that the opening and closing angles of the first opening and closing plate 22 and the second opening and closing plate 23 can be controlled by the drive mechanism 21.

[0081] Specifically, the controller can activate the drive mechanism 21 based on data fed back from the sensor (such as the concentration of oil fumes), thereby controlling the opening and closing angles of the first opening and closing plate 22 and the second opening and closing plate 23.

[0082] Among them, the driving component 3 of the drive mechanism 21 can be set as a servo motor. When the controller receives the data fed back by the sensor, the controller can control the servo motor to rotate forward and reverse. When the servo motor rotates, since the rocker arm 4 is connected to the rotating shaft of the servo motor, it can drive the rocker arm 4 to rotate. In addition, the rocker arm 4 is connected to the rotating rod assembly 5, so the rocker arm 4 can drive the rotating rod assembly 5 to rotate. Since the rotating rod assembly 5 is connected to the first opening and closing plate 22 and the second opening and closing plate 23 respectively, it can drive the first opening and closing plate 22 and the second opening and closing plate 23 to rotate, thereby realizing the opening or closing of the air intake 11.

[0083] According to some embodiments of this utility model, such as Figure 1 As shown, the drive mechanism 21 is located on one or both sides of the length direction of the first opening and closing plate 22 and the second opening and closing plate 23.

[0084] The drive mechanism 21 can be set on one side of the length direction of the first opening and closing plate 22 and the second opening and closing plate 23. In this way, the first opening and closing plate 22 and the second opening and closing plate 23 are driven by a drive mechanism 21, which makes it easier for the first opening and closing plate 22 and the second opening and closing plate 23 to open or close synchronously, reduces the number of parts, and lowers the cost.

[0085] Alternatively, the drive mechanism 21 can be located on both sides of the first opening and closing plate 22 and the second opening and closing plate 23 along their length. This allows for a more balanced force distribution on the first opening and closing plate 22 and the second opening and closing plate 23, resulting in greater stability during rotation. Furthermore, if one drive mechanism 21 fails, the other drive mechanism 21 can still operate normally, thereby improving the reliability of the range hood 100.

[0086] Also, such as Figure 2 As shown, the drive component 3 of the drive mechanism 21 is connected to the housing 1 through the mounting bracket 7. The mounting bracket 7 can provide a mounting position for the drive component 3, so that the drive component 3 can be fixed on the mounting bracket 7. Then, the mounting bracket 7 is fixed to the housing 1 with screws, so that the drive component 3 can be fixed on the housing 1.

[0087] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0089] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, characterized by, include: The housing (1) has an air intake (11). The opening and closing device (2) is disposed inside the housing (1). The opening and closing device (2) includes: a driving mechanism (21), a first opening and closing plate (22), and a second opening and closing plate (23). The first opening and closing plate (22) and the second opening and closing plate (23) are rotatably disposed inside the housing (1). The first opening and closing plate (22) and the second opening and closing plate (23) are both connected to the driving mechanism (21) for transmission. Under the driving action of the driving mechanism (21), the first opening and closing plate (22) and the second opening and closing plate (23) rotate in opposite directions to selectively open and close the air intake (11).

2. The range hood according to claim 1, wherein The first opening and closing plate (22) is provided with a first rotating part (221), and the first opening and closing plate (22) is rotatably disposed on the housing (1) through the first rotating part (221). The second opening and closing plate (23) is provided with a second rotating part (231), and the second opening and closing plate (23) is rotatably disposed on the housing (1) through the second rotating part (231).

3. The range hood according to claim 1, wherein The drive mechanism (21) includes: A drive component (3) is disposed inside the housing (1); Rocker arm (4), the first end of which is connected to the drive member (3); Rotating rod assembly (5) is rotatably connected between rocker arm (4), first opening and closing plate (22) and second opening and closing plate (23). The driving member (3) drives the rotating rod assembly (5) through rocker arm (4). The rotating rod assembly (5) drives the first opening and closing plate (22) and the second opening and closing plate (23) to rotate in opposite directions.

4. The range hood according to claim 3, wherein The rotating rod assembly (5) includes: The first rotating rod (51) has one end rotatably connected to the second end of the rocker arm (4) and the other end rotatably connected to the first opening and closing plate (22). The second rotating rod (52) has one end rotatably connected to the second end of the rocker arm (4) and the first rotating rod (51) at one end. The other end of the second rotating rod (52) is rotatably connected to the second opening and closing plate (23). The first opening and closing plate (22) and the second opening and closing plate (23) are located on both sides of the width direction of the air intake (11).

5. The range hood according to claim 4, wherein The first hinge plate (22) includes: First main board body (222); The first connecting plate (223) is connected to the side of the first main body (222) away from the second opening and closing plate (23) and is bent relative to the first main body (222). The connection between the first main body (222) and the first connecting plate (223) is rotatably disposed on the housing (1). The other end of the first rotating rod (51) is rotatably connected to the first connecting plate (223). The second hinged plate (23) includes: The second main board body (232) is disposed opposite to the first main board body (222) in the width direction of the air intake (11); The second connecting plate (233) is connected to the side of the second main body (232) away from the first opening and closing plate (22) and is bent relative to the second main body (232). The connection between the second main body (232) and the second connecting plate (233) is rotatably disposed on the housing (1). The other end of the second rotating rod (52) is rotatably connected to the second connecting plate (233).

6. The range hood according to claim 4, wherein The first rotating rod (51) and the second rotating rod (52) are located on both sides of the rocker arm (4) in the thickness direction.

7. The range hood according to claim 1, wherein A first abutting surface (220) is formed on the side of the first opening and closing plate (22) near the second opening and closing plate (23), and a second abutting surface (230) is formed on the side of the second opening and closing plate (23) near the first opening and closing plate (22). When the first opening and closing plate (22) and the second opening and closing plate (23) close the air intake (11), the first abutting surface (220) and the second abutting surface (230) abut against each other.

8. The range hood according to claim 1, wherein The housing (1) is provided with an oil-blocking flange (6) protruding towards the inside of the housing (1) at the air intake (11). The first opening and closing plate (22) is provided with a first clearance groove (224), and the second opening and closing plate (23) is provided with a second clearance groove (234). When the first opening and closing plate (22) and the second opening and closing plate (23) close the air intake (11), at least a portion of the oil-blocking flange (6) is respectively provided in the first clearance groove (224) and the second clearance groove (234).

9. The range hood according to claim 1, wherein Also includes: The controller is electrically connected to the drive mechanism (21) to control the opening and closing angles of the first opening and closing plate (22) and the second opening and closing plate (23) through the drive mechanism (21).

10. The range hood according to claim 1, wherein The drive mechanism (21) is located on one or both sides of the length direction of the first opening plate (22) and the second opening plate (23).

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