A range hood

Abstract

The utility model discloses a kind of range hood, including smoke collecting hood, the front side of smoke collecting hood is equipped with smoke inlet;The range hood further includes the guide vane assembly that oil fume below the bottom of smoke collecting hood can be guided to smoke inlet, the guide vane assembly includes the first guide vane and the second guide vane that are rotatably connected to each other, the guide vane assembly can be in folded storage state and unfolded state, when being in folded storage state, the first guide vane and the second guide vane are relatively folded and placed in smoke collecting hood, when being in unfolded state, the first guide vane and the second guide vane unfold below the bottom of smoke collecting hood.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly remove waste from the stove and fumes produced during cooking and exhaust them outdoors, reducing pollution and purifying the air.

[0003] For example, Chinese utility model patent application number 202220631630.9 discloses a range hood, which includes a range hood body and a flap. A smoke collection hood is provided on the front side of the range hood body. The top of the flap is hinged to the range hood body and the flap is located outside the smoke collection hood. The smoke collection hood has a recess and an air inlet is provided at the bottom of the recess.

[0004] Most range hoods nowadays are wall-mounted, with the entire unit positioned diagonally above the cooktop. Because the range hood's smoke collection hood has a certain width, a dead zone is formed between the bottom of the hood and the wall. This area is far from the air inlet, making it prone to vortex formation, causing cooking fumes to swirl and float in this area. This not only reduces the range hood's smoke extraction effect and efficiency but also results in a poor user experience and aesthetics. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a range hood that can solve the problem of vortex in the dead corner area between the bottom of the smoke collection hood and the wall, and guide the oil fumes in that area to the air inlet to improve the smoke extraction efficiency.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: a range hood, including a smoke collection hood, wherein a smoke inlet is provided on the front side of the smoke collection hood; characterized in that:

[0007] The range hood also includes a baffle assembly that guides the fumes below the bottom of the fume collection hood to the fume inlet. The baffle assembly includes a first baffle and a second baffle that are rotatably connected to each other. The baffle assembly can be in a folded storage state and an unfolded state. When in the folded storage state, the first baffle and the second baffle are folded relative to each other and placed inside the fume collection hood. When in the unfolded state, the first baffle and the second baffle are unfolded below the bottom of the fume collection hood.

[0008] By setting up a foldable baffle assembly, the problem of vortex in the dead corner area between the bottom of the fume hood and the wall can be solved, and the oil fumes in this area can be guided to the smoke inlet, improving the efficiency of smoke extraction. Moreover, the baffle assembly can be hidden when the machine is off.

[0009] Furthermore, to facilitate the folding and unfolding of the baffle assembly, the side of the first baffle away from the second baffle is rotatably connected to the smoke collection hood located below the smoke inlet, and the side of the second baffle away from the first baffle is a free end. The range hood also includes a motion mechanism capable of driving the free end to move.

[0010] Furthermore, the motion mechanism also includes a drive mechanism and rollers driven by the drive mechanism. The rollers are located on the side of the second guide plate away from the first guide plate, and the side of the second guide plate with the rollers maintains a tendency to move away from the first guide plate. Thus, when the guide plate assembly is unfolded and folded, the second guide plate can be moved by the rollers rolling along the fume hood, wall, or stovetop, thereby driving the first guide plate. The structure is simple and the movement is convenient.

[0011] Furthermore, in order to enable the roller smoke hood to roll upon contact with the wall or stove, the range hood also includes an elastic element connected between the first guide plate and the second guide plate. The elastic element causes the side of the second guide plate with the roller to tend to move away from the first guide plate.

[0012] To ensure smooth movement on both sides of the guide vane assembly, two rollers are provided, which are rotatably mounted on the left and right sides of the second guide vane, respectively.

[0013] Furthermore, to facilitate the folding and storage of the baffle assembly and to isolate it from the oil circuit, the smoke hood includes a first lower plate and a second lower plate arranged at intervals. The smoke hood also includes a partition plate connected between the tops of the two lower plates. The smoke inlet is not lower than the partition plate. When in the folded storage state, the first baffle plate and the second baffle plate are located between the first lower plate and the second lower plate and below the partition plate.

[0014] Furthermore, to reduce the noise emitted from the smoke inlet of the range hood, noise reduction holes are provided on the first and second guide plates.

[0015] Furthermore, sound-absorbing cotton is provided on the first and second guide plates. When in the unfolded state, the sound-absorbing cotton is located on the rear side of each guide plate. Thus, it can absorb not only the noise transmitted from the smoke inlet of the range hood, but also the noise reflected from the stove, resulting in a significant noise reduction effect.

[0016] Furthermore, in order to enable the deflector assembly to better achieve airflow guidance and noise reduction, the connection between the first deflector and the smoke hood is located at the front end of the bottom of the smoke hood, thereby avoiding the formation of vortices in the space in front of the connection between the first deflector and the smoke hood.

[0017] Compared with the prior art, the advantages of this utility model are: by setting a folded baffle assembly, the problem of vortex in the dead corner area between the bottom of the fume hood and the wall can be solved, the oil fumes in this area can be guided to the smoke inlet, the oil fume extraction efficiency can be improved, and the baffle assembly can be hidden when the machine is off. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the folded and stowed state of the baffle assembly of the range hood according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the folded and stowed state of the range hood's baffle assembly according to an embodiment of the present invention (and...). Figure 1 (Different perspectives);

[0020] Figure 3 This is a cross-sectional view of the deflector assembly of the range hood in its stored state according to an embodiment of the present utility model (the cross-section is along the front and rear direction of the range hood);

[0021] Figure 4 This is a partial sectional view (section and...) of the deflector assembly of the range hood in its stored state according to an embodiment of the present invention. Figure 3 parallel);

[0022] Figure 5 This is a schematic diagram of the unfolded state of the baffle assembly of the range hood according to an embodiment of the present utility model.

[0023] Figure 6 This is a schematic diagram of the unfolded state of the baffle assembly of the range hood according to an embodiment of the present invention (and...). Figure 4 (Different perspectives) Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] 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," and "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. They 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. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0026] See Figures 1-6 A range hood includes a smoke collection hood 1, with a smoke inlet 11 on the front side of the smoke collection hood 1.

[0027] The range hood also includes a baffle assembly capable of guiding the fumes below the bottom of the fume collection hood 1 to the fume inlet 11. This assembly includes a first baffle 21 and a second baffle 22, which are rotatably connected, similar to a hinge. The side of the first baffle 21 away from the second baffle 22 is rotatably connected to the fume collection hood 1 below the fume inlet 11, while the side of the second baffle 22 away from the first baffle 21 is a free end. In this embodiment, when the range hood is in the off state, the first baffle 21 and the second baffle 22 are folded, as shown... Figure 3 The diagram shows an inverted V-shape, with the first guide plate 21 positioned in front of the second guide plate 22. The rotation axes at the rotatable connection between the first guide plate 21 and the smoke hood 1, and at the rotatable connection between the first guide plate 21 and the second guide plate 22, extend along the width direction of the range hood (when the range hood is in its normal installation state, and the user is facing the range hood, the width direction is the left-right direction).

[0028] To facilitate the installation of the aforementioned baffle assembly, the smoke hood 1 may include a first lower plate 12 and a second lower plate 13 arranged at intervals, with the baffle assembly located between the first lower plate 12 and the second lower plate 13. The smoke hood 1 also includes a partition 14, which connects the tops of the two lower plates to isolate the space above the partition 14 from the baffle assembly. The smoke inlet 11 is not lower than the partition 14. A fan 3 may be installed in the space above the partition 14 within the smoke hood 1, or a separate fan frame may be installed on the top of the smoke hood 1 to install the fan 3. The first baffle 21 may be connected to the bottom of the first lower plate 12.

[0029] To facilitate the movement of the baffle assembly, the range hood also includes a motion mechanism, comprising a drive mechanism 41 and rollers 42. The drive mechanism 41 is preferably a motor, which is connected to the rollers via a transmission connection, thereby driving the rollers to rotate about an axis extending laterally along the range hood. The rollers 42 are located on the side of the second baffle 22 away from the first baffle 21, i.e., in the folded and stowed state, at the rear end of the second baffle 22. There are two rollers 42, rotatably positioned on the left and right sides of the second baffle 22, respectively. When the range hood is closed, the rollers 42 abut against the second lower plate 13 of the smoke collection hood 1.

[0030] An elastic element 43, which can be a spring or a flexible material, is also provided between the first guide plate 21 and the second guide plate 22. The connection position can be at the lower or upper end of the two guide plates, allowing the elastic element 43 to remain in a compressed state. The drive mechanism 41 is connected to one of the rollers 42 and is located on one side of the second guide plate 22 along the width direction of the range hood, while the aforementioned elastic element 43 is located on the other side of the second guide plate 22 along the width direction of the range hood. Figure 3 As shown, the drive mechanism 41 is located on the left side, while the elastic element 43 is located on the right side.

[0031] When the range hood starts working, the drive mechanism 41 is activated, driving the roller 42 on the corresponding side to rotate. The roller 42 then rolls downwards along the second lower plate 13 until it reaches the wall where the range hood is installed, and continues rolling downwards along the wall, finally moving forward a distance along the stovetop. During this process, since the reset member 5 is initially in a compressed state, it can apply a force away from the first guide plate 21 to the end of the second guide plate 22, keeping the roller 42 in close contact with the smoke hood 1, the wall, or the stovetop. The portion of the second guide plate 22 on the same side as the roller 42 moves downwards and forwards synchronously with the roller 42, simultaneously driving the side of the second guide plate 22 away from the roller 42 to move downwards and forwards until at least the second guide plate 22 is tilted to a certain extent relative to the horizontal direction. During the movement of the second guide plate 22, it drives the first guide plate 21 to rotate forward relative to the smoke hood 1, causing the first guide plate 21 and the second guide plate 22 to unfold and form a guide surface from the bottom of the stovetop to the bottom of the smoke hood 1. Figure 5As shown, the elastic element 43 is stretched at this time. During stir-frying and other Chinese cooking methods, the walls are easily contaminated by splashed oil droplets or soup, and are difficult to clean. The first guide plate 21 and the second guide plate 22 extend during operation, forming a guide surface in front of the wall, preventing the wall from being contaminated by splashed oil droplets or soup. In this state, the fumes generated from the pot rise along the guide surface until they reach the smoke inlet 11, improving the flow field in the dead corner area between the lower part of the range hood and the wall, while also increasing the smoke extraction efficiency. Each guide plate, at least in its extended state, uses a smooth, non-stick material or an oleophobic coating on its front-facing side, making the surface easy to clean.

[0032] To enable the deflector assembly to better guide airflow and reduce noise, the connection between the first deflector 21 and the smoke hood 1 is located at the front end of the bottom of the smoke hood 1, thereby preventing the formation of vortices in the space in front of the connection between the first deflector 21 and the smoke hood 1.

[0033] When the range hood needs to be turned off, the drive mechanism 41 drives the roller 42 to move in the opposite direction, returning it to its initial position. Simultaneously, the elastic element 43 applies a force away from the first guide plate 21 to the end of the second guide plate 22, ensuring that the roller 42 can remain in close contact with the smoke hood 1, the wall, or the stovetop. When the range hood is turned off, the drive mechanism 41 self-locks to maintain the position of the guide plate assembly.

[0034] Alternatively, other motion mechanisms can be used to achieve the folding and unfolding of the deflector assembly, such as electric push rods or rope coils. Furthermore, the reset component 5 can also be located on the upper surface of the first deflector 21 and the second deflector 22 in the folded state, i.e., it is connected to... Figure 4 The orientation shown is opposite, so the reset member 5 is kept in a stretched state. When moving, its reset force can also be applied to the second guide plate 22 so that the roller 42 can be pressed against the smoke hood 1, the wall or the stove.

[0035] Because the noise from the air inlet of the range hood is relatively loud when it is working, it will be transmitted to the stove and reflected. Therefore, noise reduction holes 23 are opened on the first guide plate 21 and the second guide plate 22, and sound-absorbing cotton 24 is placed on the rear side away from the oil fumes when each guide plate is unfolded. This can not only absorb the noise transmitted from the smoke inlet 11 of the range hood, but also absorb the noise reflected by the stove, and the noise reduction effect is obvious.

[0036] The range hood may also include a baffle plate 5, which opens and closes the smoke inlet 11. The baffle plate 5 can be flipped relative to the smoke collection hood 1, thereby switching states.

[0037] The aforementioned baffle assembly and smoke baffle 5 can both be controlled by a voice module. The baffle assembly 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 corresponding drive mechanisms of the baffle assembly and smoke baffle 5 to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A range hood, comprising a smoke collection hood (1), wherein a smoke inlet (11) is provided on the front side of the smoke collection hood (1); characterized in that: The range hood also includes a guide plate assembly that can guide the oil fumes below the bottom of the smoke collection hood (1) to the smoke inlet (11). The guide plate assembly includes a first guide plate (21) and a second guide plate (22) that are rotatably connected to each other. The guide plate assembly can be in a folded storage state and an unfolded state. When in the folded storage state, the first guide plate (21) and the second guide plate (22) are folded relative to each other and placed inside the smoke collection hood (1). When in the unfolded state, the first guide plate (21) and the second guide plate (22) are unfolded below the bottom of the smoke collection hood (1).

2. The range hood according to claim 1, characterized in that: The side of the first guide plate (21) away from the second guide plate (22) is rotatably connected to the smoke hood (1) located below the smoke inlet (11). The side of the second guide plate (22) away from the first guide plate (21) is a free end. The range hood also includes a motion mechanism that can drive the free end to move.

3. The range hood according to claim 2, characterized in that: The motion mechanism also includes a drive mechanism (41) and a roller (42) driven to rotate by the drive mechanism (41). The roller (42) is located on the side of the second guide plate (22) away from the first guide plate (21), and the side of the second guide plate (22) with the roller (42) tends to move away from the first guide plate (21).

4. The range hood according to claim 3, characterized in that: The range hood also includes an elastic element (43) connected between the first guide plate (21) and the second guide plate (22), the elastic element (43) causing the side of the second guide plate (22) with rollers (42) to tend to move away from the first guide plate (21).

5. The range hood according to claim 3, characterized in that: There are two rollers (42), which are rotatably disposed on the left and right sides of the second guide plate (22).

6. The range hood according to any one of claims 1 to 5, characterized in that: The smoke hood (1) includes a first lower plate (12) and a second lower plate (13) arranged at intervals. The smoke hood (1) also includes a partition (14) connected between the tops of the two lower plates. The smoke inlet (11) is not lower than the partition (14). When in the folded storage state, the first guide plate (21) and the second guide plate (22) are located between the first lower plate (12) and the second lower plate (13) and below the partition (14).

7. The range hood according to any one of claims 1 to 5, characterized in that: Noise reduction holes (23) are provided on the first guide plate (21) and the second guide plate (22).

8. The range hood according to claim 7, characterized in that: The first guide plate (21) and the second guide plate (22) are provided with sound-absorbing cotton (24). When in the unfolded state, the sound-absorbing cotton (24) is located on the rear side of each guide plate.

9. The range hood according to any one of claims 1 to 5, characterized in that: The connection between the first guide plate (21) and the smoke hood (1) is located at the front end of the bottom of the smoke hood (1).

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