Range hood

Abstract

The application discloses a range hood. The range hood comprises a body, a fan assembly arranged in the body, and a lifting assembly movably connected to the body. The lifting assembly comprises two rotationally connected guide plates, and an included angle is formed between the two guide plates. Each guide plate is provided with a smoke suction port, and each guide plate is movably connected to the body. When the lifting assembly is lowered to different positions relative to the body, the included angle between the two guide plates becomes smaller, and the distance between the two guide plate parts connected to the body becomes smaller. The range hood changes the position of the lifting assembly to make the included angle between the two guide plates smaller and the distance between the two guide plate parts connected to the body smaller, so that the smoke suction structure formed by the two guide plates is more slender as a whole, and the distribution of the negative pressure area of the guide plate is more favorable.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a liftable range hood. Background Technology

[0002] As people's living standards improve, their demands for kitchen environments are also increasing, placing higher demands on the smoke extraction capabilities of range hoods. Against this backdrop, range hoods include lifting components, which, by raising and lowering themselves, change the position of the smoke inlet, thereby improving smoke extraction efficiency. In related technologies, the lifting component includes two V-shaped guide vanes. During the lifting process, the size and angle of the negative pressure zone of the guide vanes can be changed, thus providing smoke extraction power matched to the amount of cooking fumes. However, the adjustment of the negative pressure zone distribution by this lifting component is still not ideal. Summary of the Invention

[0003] This application provides a range hood.

[0004] An embodiment of this application provides a range hood, comprising:

[0005] The main body contains a fan assembly;

[0006] A lifting assembly is movably connected to the main body. The lifting assembly includes two rotatably connected guide plates, which form an angle between them. Each guide plate is provided with a smoke inlet. Each guide plate is movably connected to the main body. When the lifting assembly descends to different positions relative to the main body, the angle between the two guide plates decreases, and the distance between the two guide plate parts connected to the main body decreases.

[0007] The aforementioned range hood, through the change in the position of the lowering component, reduces the included angle between the two guide plates and the distance between the two guide plates connecting the main body. As a result, the overall smoke extraction structure formed by the two guide plates is more elongated, which is more beneficial to the distribution of negative pressure areas on the guide plates.

[0008] In some embodiments, the body includes a slider and two opposing side plates with grooves. The slider is rotatably connected to the guide plate and is at least partially located in the groove. During position changes of the lifting assembly, the slider is configured to slide in the groove to adjust the tilt angle of the guide plate relative to the body and to adjust the position of the guide plate portion connected to the body.

[0009] In some embodiments, the slider includes a sliding sleeve that passes through the groove, and the body also includes a fixed shaft that passes through the sliding sleeve and is connected to the guide plate.

[0010] In some embodiments, the body further includes a support plate, the groove includes opposing first and second groove walls, the first groove wall has a notch, the support plate passes through the notch or the groove, the support plate is opposite to the second groove wall, and the slider is configured to slide in the space between the support plate and the second groove wall.

[0011] In some embodiments, each of the guide vanes is provided with a first oil mesh and a second oil mesh in relatively fixed positions. The lifting assembly can switch between a first position and a second position relative to the main body. When the lifting assembly is in the first position, the first oil mesh is exposed outside the main body and the second oil mesh is hidden inside the main body. When the lifting assembly is in the second position, both the first oil mesh and the second oil mesh are exposed outside the main body. Both the first oil mesh and the second oil mesh form the smoke inlet.

[0012] In some embodiments, when the lifting assembly is located at any position relative to the body, the overall length of the guide plate remains unchanged, but the tilt angle of the guide plate relative to the body is different.

[0013] In some embodiments, the range hood includes a drive assembly and a connecting assembly. The drive assembly is connected to the lifting assembly via the connecting assembly. The lifting assembly includes a base plate, and the connecting assembly includes a crossbeam. The base plate and the crossbeam extend along the length of the range hood. The length of the crossbeam is the same as the length of the base plate, and the crossbeam is connected to the base plate.

[0014] In some embodiments, the connecting assembly includes a first fixing member, a connecting member, and a second fixing member. The driving assembly is fixed to the first fixing member, and the second fixing member and the connecting member are fixed to the crossbeam. The driving assembly includes a slider connected to the connecting member. The first fixing member and the second fixing member are slidable relative to each other. The first fixing member forms a channel that limits the sliding of the second fixing member.

[0015] In some embodiments, the first fixing member and the second fixing member are connected by a slide rail assembly.

[0016] In some embodiments, the second fastener includes two members, and the first fastener includes a plate and two side wings. The two side wings are respectively disposed on both sides of the plate and are located on the outer sides of the two second fasteners. A channel is formed between the two side wings.

[0017] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0019] Figure 1 This is a perspective view of a range hood according to an embodiment of this application;

[0020] Figure 2 This is a cross-sectional schematic diagram of the range hood according to an embodiment of this application;

[0021] Figure 3 This is another cross-sectional schematic diagram of the range hood according to an embodiment of this application;

[0022] Figure 4 This is a comparative schematic diagram of the lifting components of a range hood in related technologies and the range hood of the embodiment of this application;

[0023] Figure 5 This is a partial structural schematic diagram of the range hood according to an embodiment of this application;

[0024] Figure 6 This is another cross-sectional schematic diagram of the range hood according to the embodiments of this application;

[0025] Figure 7 yes Figure 2 Enlarged schematic diagram of part B;

[0026] Figure 8 This is a front view of the range hood according to an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the bottom surface of the range hood according to an embodiment of this application;

[0028] Figure 10 This is another perspective view of the range hood according to the embodiments of this application;

[0029] Figure 11 This is another front view of the range hood according to an embodiment of this application;

[0030] Figure 12 This is another bottom view of the range hood according to an embodiment of this application;

[0031] Figure 13 This is a comparative schematic diagram of the lifting component in the first position and the second position according to the embodiments of this application;

[0032] Figure 14 This is a partially exploded view of the range hood according to an embodiment of this application;

[0033] Figure 15This is another exploded view of the range hood according to an embodiment of this application;

[0034] Figure 16 This is a partial exploded view of the range hood according to an embodiment of this application. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] Please refer to Figures 1 to 6 An embodiment of the present application provides a range hood 100, which includes a body 12 and a lifting assembly 14.

[0037] The main body 12 is equipped with a fan assembly 16. A lifting assembly 14 is movably connected to the main body 12. The lifting assembly 14 includes two guide plates 18 that are rotatably connected. The two guide plates 18 form an angle between them. Each guide plate 18 is provided with a smoke inlet 23. Each guide plate 18 is movably connected to the main body 12. When the lifting assembly 14 descends to different positions relative to the main body 12, the angle between the two guide plates 18 becomes smaller, and the distance between the two guide plate 18 portions 36 connected to the main body 12 becomes smaller.

[0038] The range hood 100 described above, by changing the position of the lifting component 14 as it descends, makes the included angle between the two guide plates 18 smaller and the distance between the two guide plates 18 parts 36 connecting the main body 12 smaller. As a result, the smoke extraction structure formed by the two guide plates 18 is more slender overall, which is more beneficial to the distribution of negative pressure area of ​​the guide plates 18.

[0039] Specifically, from the side (left or right) of the range hood 100, the two baffles 18 are connected in a roughly V-shaped structure, and the oil mesh of each baffle 18 can form a smoke inlet 23, that is, the smoke inlets 23 on both sides of the lifting assembly 14 are distributed in a V-shape.

[0040] Please combine Figure 4 , Figure 4 The diagram shows the structure of the two guide vanes 18 and the main body 12. The solid line represents the initial position of the lifting assembly 14, and the dashed line represents the position of the lifting assembly 14 after it descends.

[0041] In the initial position, the first included angle between the two guide vanes in the related art is the same as the second included angle between the two guide vanes 18 in this embodiment.

[0042] When the lifting assembly descends by the same distance L, in related technologies, the distance between the two guide vane sections connecting the main body remains unchanged, and the first included angle becomes smaller.

[0043] In this embodiment, the distance between the two guide plates 18 portions 36 connecting the main body 12 is reduced, and the second included angle is reduced. However, the second included angle is smaller than the first included angle, and the change in the second included angle is greater. This makes the change in the tilt angle A2 of the guide plate 18 relative to the horizontal plane in this embodiment greater than the change in the tilt angle A1 of the guide plate relative to the horizontal plane in the related art under the same descent stroke L. Thus, after the lifting assembly 14 descends, the triangle formed by the two guide plates 18 and the main body 12, or the V-shaped structure formed by the two guide plates 18, is more elongated, resulting in a better distribution effect on the negative pressure areas on both sides of the guide plates 18.

[0044] During the descent of the lifting assembly 14, the smoke inlet 23 descends and changes its tilt angle A (increasing the tilt angle A optimizes the negative pressure distribution; the tilt angle A of the guide plate 18 relative to the horizontal plane ranges from 35° to 65°; the lifting height H of the lifting assembly 14 is 100 to 250 mm). Figure 13 (As shown).

[0045] When the lifting assembly 14 rises to different positions relative to the main body 12, the included angle between the two guide plates 18 increases, and the distance between the two guide plate 18 portions 36 connecting the main body 12 increases.

[0046] The range hood 100 also includes an oil cup 24, located at the bottom of the lifting assembly 14, which collects oil droplets falling from the deflector plate 18. In one embodiment, the range hood 100 can be an island hood or a central island hood, and can be installed below the ceiling and above the cooktop. The cooktop can include a gas cooktop or an induction cooktop. The cooktop can include one or more burners on which cooking utensils can be placed. The range hood 100 can be installed directly above the cooktop, with the lifting assembly 14 corresponding to the position of the burners. During cooking, the range hood 100 is turned on to extract the fumes generated during cooking.

[0047] Please combine Figure 3 The fan assembly 16 includes a volute 59 and a fan 60. The fan 60 is located inside the volute 59. Air inlets 62 are provided on opposite sides of the volute 59. When the fan 60 is started, it can draw in oil fumes from the smoke inlets 23 on both sides through the two air inlets 62. Please refer to... Figure 5 The volute 59 also has an air outlet 83, which is located on the circumferential side of the volute 59. Please refer to... Figure 3 The two air inlets 62 are located on the left and right sides of the volute 59.

[0048] In some embodiments, the body 12 includes a slider 38 and two opposing side plates 40. The side plates 40 have grooves 42. The slider 38 is rotatably connected to the guide plate 18, and the slider 38 is at least partially located in the groove 42. During position changes of the lifting assembly 14, the slider 38 is configured to slide within the groove 42 to adjust the tilt angle of the guide plate 18 relative to the body 12, and to adjust the position of the portion 36 of the guide plate 18 connected to the body 12. This allows the movement of the guide plate 18 to adapt to the lifting and lowering of the lifting assembly 14.

[0049] Specifically, the upper end of the guide plate 18 can be partially located between the two side plates 4040, and the two sliding members 38 are respectively rotatably connected to the upper left and upper right ends of the guide plate 18. The slide groove 42 can be tilted downwards at an angle relative to the horizontal plane. During the lifting process, the position of the lifting assembly 14 changes, the tilt angle of the entire guide plate 18 also changes, and the position of the guide plate 18 part 36 connecting to the body 12 also changes.

[0050] Specifically, during the descent of the lifting assembly 14, the tilt angle A of the guide plate 18 relative to the horizontal plane gradually increases, the included angle between the two guide plates 18 gradually decreases, the guide plate 18 appears more inclined, and the position of the guide plate 18 part 36 connecting the body 12 moves obliquely downward, so that the distance between the two guide plate 18 parts 36 connecting the body 12 decreases. At the same time, the guide plate 18 drives the sliding member 38 to move downward in the slide groove 42 to adapt to the change in the length of the exposed part of the guide plate 18. Meanwhile, the guide plate 18 can rotate relative to the sliding member 38 to adapt to the change in the tilt angle of the guide plate 18.

[0051] In this embodiment, the main body 12 includes a frame assembly 64 and a fixing assembly 66. The fan assembly 16 can be installed inside the frame assembly 64. The fixing assembly 66 is fixedly connected to the frame assembly 64, and the lifting assembly 14 is movably connected to the fixing assembly 66. The fixing assembly 66 includes two side plates 40. Each guide plate 18 is movably connected to the two side plates 40. The guide plate 18 portion 36 connecting to the main body 12 can be the guide plate 18 portion 36 connecting to the side plates 40.

[0052] The range hood 100 also includes a decorative cover 81, which is fitted around the outer periphery of the frame assembly 64 to make the range hood 100 more aesthetically pleasing.

[0053] In some embodiments, the slider 38 includes a sliding sleeve 39 through which a groove 42 passes. The body 12 also includes a fixed shaft 41 through which the sliding sleeve 39 passes and is connected to the guide plate 18. In this way, a rotatable connection between the guide plate 18 and the slider 38 can be achieved.

[0054] Specifically, the sliding sleeve 39 is disposed on the outer periphery of the fixed shaft 41, and the fixed shaft 41 can be fixedly connected to the upper end of the guide plate 18. During the lifting and lowering process of the lifting assembly 14, the sliding sleeve 39 can slide back and forth along the slide groove 42 and drive the upper end of the guide plate 18 to move up and down. The guide plate 18 and the fixed shaft 41 can rotate around the axis of the sliding sleeve 39, so that the guide plate 18 adapts to the lifting and lowering movement of the lifting assembly 14.

[0055] In this embodiment, the part 36 of the guide plate 18 connected to the main body 12 can be the part where the upper end of the guide plate 18 is connected to the fixed shaft 41. During the lifting assembly 14 rising, the upper ends of the two guide plates 18 move away from each other at an angle upward, and the distance between the parts where the upper ends of the two guide plates 18 are connected to the fixed shaft 41 increases.

[0056] During the descent of the lifting assembly 14, the upper ends of the two guide plates 18 move closer to each other at an angle downwards, and the distance between the upper ends of the two guide plates 18 and the parts connected to the fixed shaft 41 decreases. In other embodiments, the guide plate 18 part 36 connecting the body 12 can also be the fixed shaft 41, or the sliding sleeve 39, or the part where the fixed shaft 41 and the sliding sleeve 39 are connected, etc., and no specific limitation is made here.

[0057] In one embodiment, the fixed shaft 41 can be threaded, welded, or snap-fitted to the guide plate 18, etc. In another embodiment, the fixed shaft 41 can be rotatably connected to the guide plate 18, and the fixed shaft 41 can be fixedly or rotatably connected to the sliding sleeve 39.

[0058] In some implementations, please refer to Figure 7 The body 12 also includes a support plate 43, and the slide 42 includes a first groove wall 45 and a second groove wall 47 facing each other. The first groove wall 45 is provided with a notch 49. The support plate 43 passes through the notch 49 or the slide 42. The support plate 43 is opposite to the second groove wall 47. The slider 38 is configured to slide in the space between the support plate 43 and the second groove wall 47. In this way, the size of the slide 42 can be easily adjusted.

[0059] Specifically, in Figure 7 In the embodiment shown, the chute 42 is racetrack-shaped, and the second chute wall 47 and the first chute wall 45 are two chute walls extending along the length of the chute 42. A notch 49 is formed in the first chute wall 45 along the length of the chute 42. The support plate 43 is approximately U-shaped and is installed in the first chute wall 45 through the U-shaped opening of the support plate 43, such that the bottom of the support plate 43 is located at the notch 49 or in the chute 42. The two sides of the U-shape respectively clamp the side plate 40 and fix it to the side plate 40.

[0060] With the bottom of the support plate 43 located at the notch 49, the distance between the bottom of the support plate 43 and the second groove wall 47 is larger, and the space between the support plate 43 and the second groove wall 47 is wider, which can accommodate a larger size slider 38, or provide a more spacious sliding space for a slider 38 of the same size.

[0061] With the bottom of the support plate 43 located in the groove 42, the distance between the bottom of the support plate 43 and the second groove wall 47 is small, and the space between the support plate 43 and the second groove wall 47 is narrow. This allows for the adaptation of smaller sliding members 38, or provides a tighter sliding space for sliding members 38 of the same size.

[0062] In summary, the clamping force on the slider 38 can be adjusted by changing the position of the support plate 43, or it can be adapted to sliders 38 of different sizes. Furthermore, compared to the groove wall of the slide 42, the support plate 43 provides a larger contact area with the slider 38, allowing for more precise lifting and lowering of the lifting assembly 14. It is understood that the shape of the support plate can also be other shapes, and no specific limitations are made here.

[0063] In some embodiments, each guide vane 18 is provided with a first oil mesh 20 and a second oil mesh 22 in relatively fixed positions. The lifting assembly 14 can switch between a first position and a second position relative to the main body 12. When the lifting assembly 14 is in the first position, the first oil mesh 20 is exposed outside the main body 12 and the second oil mesh 22 is hidden inside the main body 12. When the lifting assembly 14 is in the second position, both the first oil mesh 20 and the second oil mesh 22 are exposed outside the main body 12. Both the first oil mesh 20 and the second oil mesh 22 form a smoke inlet 23. In this way, by changing the position of the lifting assembly 14, the first oil mesh 20 can form a smoke inlet 23 alone or together with the second oil mesh 22, improving the negative pressure distribution and thus enhancing the smoke extraction effect.

[0064] Specifically, when the stove produces less oil fumes, the lifting component 14 can be in the first position, and the range hood 100 can absorb the oil fumes through the first oil filter 20.

[0065] When there is a lot of cooking fumes from the stove, the lifting component 14 can be lowered to the second position, and the range hood 100 can absorb the cooking fumes through the first oil filter 20 and the second oil filter 22.

[0066] On the one hand, the suction opening 23 formed by the two oil filters descends, allowing it to get closer to the cooktop and improve the smoke extraction effect. On the other hand, during the lifting process, the lifting component 14 can change the tilt angle of the oil filter suction opening 23, improving the negative pressure distribution and enhancing the smoke extraction effect. Additionally, the range hood 100 may also include a controller and an oil fume sensor. The controller is electrically connected to the oil fume sensor, which collects oil fume data. The controller calculates the oil fume concentration based on the data and controls the lifting component 14 to move to a specific working position based on the oil fume concentration. This working position can be a first position, a second position, or other positions. The correspondence between oil fume concentration and working position can be pre-calibrated and stored in the range hood 100.

[0067] The fume sensor can be installed on the side wall of the fume duct. The fume sensor may include a light emitting unit and a light receiving unit.

[0068] In one embodiment, the light emitting unit and the light receiving unit are arranged in a straight line along the radial direction of the fume duct, and the light output path of the light emitting unit and the light receiving path of the light receiving unit are basically aligned.

[0069] When cooking fumes pass through the fume channel between the light emitting unit and the light receiving unit, the presence of fume particles partially blocks the light emitted by the light emitting unit, reducing the light intensity received by the light receiving unit and consequently altering the output light intensity signal. The controller calculates the corresponding fume concentration by collecting the light intensity signal output by the light receiving unit. In this embodiment, the magnitude of the light intensity signal is negatively correlated with the magnitude of the fume concentration.

[0070] In one embodiment, the light emitting unit and the light receiving unit can be arranged circumferentially offset along the fume duct, and the light output path of the light emitting unit and the light receiving path of the light receiving unit form an angle greater than zero degrees and less than 180 degrees.

[0071] When cooking fumes pass through the fume channel between the light emitting unit and the light receiving unit, the presence of fume particles causes the light emitted by the light emitting unit to be reflected, increasing the light intensity received by the light receiving unit and consequently changing the light intensity signal output by the light receiving unit. The controller calculates the corresponding fume concentration by collecting the light intensity signal output by the light receiving unit. In this embodiment, the magnitude of the light intensity signal is positively correlated with the magnitude of the fume concentration.

[0072] It is understood that the lifting assembly 14 can also be located in other positions besides the first position and the second position. By controlling the lifting stroke of the lifting assembly 14, the lifting assembly 14 can be located in the first position, the second position and other positions to provide different smoke extraction capabilities to adapt to the size of the oil fume.

[0073] In one embodiment, the first position may be the position where the lifting assembly 14 has reached its maximum upward stroke, and the second position may be the position where the lifting assembly 14 has reached its maximum downward stroke. Wherein, the lifting assembly 14 is located in the second position (e.g., Figure 13 (As shown in the diagram on the right), the distance between the lifting assembly 14 and the stove is the smallest, or in other words, the distance between the oil cup 24 and the main body 12 is the largest; when the lifting assembly 14 is in the first position (e.g. Figure 13 As shown in the left-hand diagram, the distance between the lifting assembly 14 and the stove is at its maximum, or in other words, the distance between the oil cup 24 and the main body 12 is at its minimum. It is understood that in other embodiments, the first and second positions can be other positions, which are not specifically limited here.

[0074] Please combine Figure 1 , Figure 8 and Figure 9 When the lifting assembly 14 is in the first position, the second oil filter 22 is entirely or mostly hidden within the main body 12, and does not participate in the smoking process, or its participation in the smoking process is minimal. Please refer to... Figures 10-12 When the lifting component 14 is in the second position, the second oil mesh 22 is exposed outside the main body 12 in whole or in part, and participates in smoking, or participates in smoking to a great extent.

[0075] Regardless of its location—whether in the first, second, or other positions—the first oil filter 20 is generally, or mostly, exposed outside the main body 12, participating in smoke extraction. The first oil filter 20 may include an outer oil filter and an inner oil filter, which partially overlap. Both the outer and inner oil filters can be detachably mounted on the deflector plate 18 for easy cleaning. Additionally, a glass panel is installed on the deflector plate 18 for convenient cleaning.

[0076] The smoking opening 23 formed by the first oil mesh 20 can be used as the lower smoking opening 23, and the smoking opening 23 formed by the second oil mesh 22 can be used as the upper smoking opening 23, thus forming a smoking area distribution where the lower smoking opening 23 is the main smoking opening and the upper smoking opening 23 is the auxiliary smoking opening.

[0077] In one embodiment, the first oil mesh 20 and / or the second oil mesh 22 may be installed at different openings in the baffle 18.

[0078] In one embodiment, the first oil mesh 20 and / or the second oil mesh 22 can be formed by directly opening holes in the guide plate 18. The mesh area formed by the oil mesh forms a smoke inlet 23. The degree of participation of different oil meshes in smoke extraction is changed by the lifting movement of the lifting assembly 14.

[0079] In one example, both the first oil mesh 20 and the second oil mesh 22 can be made of metal.

[0080] In some embodiments, the first oil filter 20 has a plurality of first smoke-absorbing holes arranged in a strip shape, and the plurality of first smoke-absorbing holes are spaced apart along the length of the range hood 100. This can improve the smoke extraction effect.

[0081] Specifically, in this embodiment, the range hood 100 is relatively long, and a plurality of strip-shaped first smoke holes 25 are arranged along the length of the range hood 100, so that the smoke extraction area formed by the first oil filter 20 can basically cover the area of ​​oil fumes generated by the stove. The plurality of first smoke holes 25 can be arranged in parallel.

[0082] In some embodiments, the second oil mesh 22 has a honeycomb structure. In this way, it can absorb the escaping oil fumes.

[0083] Specifically, when the generated fumes rise, most of them are sucked away by the smoke inlet 23 formed by the first oil mesh 20, while a small portion of the fumes continue to rise and diffuse to the outside of the range hood 100. When the second oil mesh 22 is exposed outside the main body 12, the second smoke inlet of the honeycomb oil mesh structure is more densely distributed, which can gather the outward-expanding fumes, reduce the escape of upper fumes, and improve the smoke extraction effect.

[0084] The positions of the first oil mesh 20 and the second oil mesh 22 are relatively fixed. That is to say, no matter where the lifting component 14 is located, the relative positions between the first oil mesh 20 and the second oil mesh 22 remain unchanged. This can avoid the problem that oil fumes may accumulate in the sliding parts due to the sliding between different oil meshes, making them difficult to clean.

[0085] In some embodiments, the overall length of the guide vane 18 remains constant even when the lifting assembly 14 is in any position relative to the body 12, while the tilt angle of the guide vane 18 relative to the body 12 varies. This simplifies the structure of the guide vane 18.

[0086] Specifically, regardless of the position of the lifting component 14 relative to the main body 12, the overall length of the guide plate 18 remains unchanged. There is no need to adjust the size of the smoking area through the sliding connection between the two oil screens. Therefore, the sliding connection structure between the two oil screens is not required, which simplifies the structure of the guide plate 18. Moreover, it can also avoid the problem of oil fumes accumulating in the sliding connection structure, which makes the guide plate 18 difficult to clean.

[0087] When the lifting assembly 14 is in any position relative to the main body 12, the overall length of the guide plate 18 remains unchanged, but the tilt angle of the guide plate 18 relative to the main body 12 is different. That is to say, by adjusting the tilt angle of the entire guide plate 18 relative to the main body 12, the guide plate 18 can adapt to different lifting strokes of the lifting assembly 14, and the tilt angles of the first oil mesh 20 and the second oil mesh 22 change synchronously, improving the negative pressure distribution and enhancing the smoking effect.

[0088] In some embodiments, the range hood 100 includes a drive assembly 32 and a connecting assembly 34. The drive assembly 32 is connected to the lifting assembly 14 via the connecting assembly 34. The lifting assembly 14 includes a base plate 52, and the connecting assembly 34 includes a crossbeam 56. The base plate 52 and the crossbeam 56 extend along the length of the range hood 100, and the length of the crossbeam 56 is the same as the length of the base plate 52. The crossbeam 56 connects to the base plate 52. In this way, the lifting of both sides of the lifting assembly 14 can be synchronized, preventing tilting and jamming, and achieving balanced lifting.

[0089] Specifically, the bottom inner side of the deflector 18 is rotatably connected to the crossbeam 56, please refer to... Figure 3 The bottom inner side of the guide plate 18 is provided with a first reinforcing plate 55, and the outer side of the crossbeam 56 is provided with a second reinforcing plate 57. The first reinforcing plate 55 and the second reinforcing plate 57 can be connected by a rotating shaft. In this embodiment, since the range hood 100 is relatively long, about 1.2m, the length of the crossbeam 56 is the same as the length of the base plate 52. The crossbeam 56 can be a through crossbeam 56. The crossbeam 56 is connected to the base plate 52, so that when the drive assembly 32 drives the lifting assembly 14 to rise and fall through the connecting assembly 34, the crossbeam 56 can drive the base plate 52 to rise and fall synchronously as a whole, thereby realizing synchronous lifting and falling on both sides (such as the left and right sides) of the lifting assembly 14, preventing tilting and jamming, and achieving balanced lifting and falling.

[0090] The drive assembly 32 may be located within the frame assembly 64 and below the fan assembly 16. A portion of the connection assembly 34 may be located within the frame assembly 64, and a portion may extend out of the frame assembly 64 and connect to the lifting assembly 14.

[0091] In some embodiments, the connecting assembly 34 includes a first fixing member 84, a connecting member 86, and a second fixing member 88. The driving assembly 32 is fixed to the first fixing member 84, and the second fixing member 88 and the connecting member 86 are fixed to the crossbeam 56. The driving assembly 32 includes a slider 90 connected to the connecting member 86. The first fixing member 84 and the second fixing member 88 are slidable relative to each other. The first fixing member 84 forms a channel 98 that limits the sliding of the second fixing member 88. In this way, the lifting assembly 14 can be raised and lowered more smoothly.

[0092] Specifically, please combine Figure 14 The drive assembly 32 may include a motor 92, which may be a push rod motor. When the motor 92 is started, it can drive the slider 90 to move up and down, thereby causing the connecting member 86 to rise and fall. The connecting member 86 then drives the second fixing member 88 and the lifting assembly 14 to rise and fall. It is understood that in other embodiments, the motor 92 may also be other types of motors, and is not limited to a push rod motor. For example, the drive assembly 32 may include a gear set or a lead screw, which converts the rotational motion of the motor drive shaft into the up and down movement of the slider 90.

[0093] exist Figure 16 In the embodiment shown, the second fastener 88 includes two members, and the connector 86 is located between the two second fasteners 88. The first fastener 84 can be fixedly connected to the inside of the frame assembly 64.

[0094] In some embodiments, the second fastener 88 includes two members, and the first fastener 84 includes a plate 94 and two side wings 96. The two side wings 96 are respectively disposed on both sides of the plate 94 and are located on the outer sides of the two second fasteners 88. A channel 98 is formed between the two side wings 96. In this way, the first fastener 84 can have a channel 98 formed.

[0095] Specifically, please combine Figure 15 and Figure 16 Each side wing 96 is located outside a corresponding second fixing member 88. The channel 98 formed between the two side wings 96 can limit the sliding of the second fixing member 88, ensuring smooth lifting of the lifting assembly 14.

[0096] In some embodiments, the first fixing member 84 and the second fixing member 88 are connected by a slide rail assembly 97. This improves the smoothness of the lifting assembly 14's lifting and lowering and prevents it from jamming.

[0097] Specifically, the slide rail assembly 97 may include a first slide rail 95 and a second slide rail 93, which are connected by ball bearings (not shown). A first slide rail 95 is mounted on the outer side of a second fixing member 88, and a second slide rail 93 is mounted on the inner side of a side wing 96. The second fixing member 88 and the side wing 96 are slidably connected via the first slide rail 95 and the second slide rail 93, allowing the lifting assembly 14 to move more smoothly and preventing it from jamming.

[0098] 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., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that, include: The main body contains a fan assembly; A lifting assembly is movably connected to the main body. The lifting assembly includes two rotatably connected guide plates, which form an angle between them. Each guide plate is provided with a smoke inlet. Each guide plate is movably connected to the main body. When the lifting assembly descends to different positions relative to the main body, the angle between the two guide plates decreases, and the distance between the two guide plate parts connected to the main body decreases. The main body includes a slider and two opposing side plates. The side plates are provided with grooves. The slider is rotatably connected to the guide plate. The slider is at least partially located in the groove. During the position change of the lifting assembly, the slider is configured to slide in the groove to adjust the tilt angle of the guide plate relative to the main body and adjust the position of the guide plate part connected to the main body. The range hood includes a drive assembly and a connection assembly, wherein the drive assembly is connected to the lifting assembly via the connection assembly.

2. The range hood according to claim 1, characterized in that, The sliding component includes a sliding sleeve that passes through the groove, and the body also includes a fixed shaft that passes through the sliding sleeve and is connected to the guide plate.

3. The range hood according to claim 1, characterized in that, The body also includes a support plate, the slide groove includes a first groove wall and a second groove wall opposite each other, the first groove wall is provided with a notch, the support plate passes through the notch or the slide groove, the support plate is opposite to the second groove wall, and the sliding member is configured to slide in the space between the support plate and the second groove wall.

4. The range hood according to claim 1, characterized in that, Each of the guide vanes is provided with a first oil mesh and a second oil mesh in relatively fixed positions. The lifting assembly can switch between a first position and a second position relative to the main body. When the lifting assembly is in the first position, the first oil mesh is exposed outside the main body and the second oil mesh is hidden inside the main body. When the lifting assembly is in the second position, both the first oil mesh and the second oil mesh are exposed outside the main body. Both the first oil mesh and the second oil mesh form the smoke inlet.

5. The range hood according to any one of claims 1-4, characterized in that, When the lifting assembly is located at any position relative to the body, the overall length of the guide plate remains unchanged, but the tilt angle of the guide plate relative to the body varies.

6. The range hood according to claim 1, characterized in that, The lifting assembly includes a base plate, and the connecting assembly includes a crossbeam. The base plate and the crossbeam extend along the length of the range hood, and the length of the crossbeam is the same as the length of the base plate. The crossbeam connects to the base plate.

7. The range hood according to claim 6, characterized in that, The connecting assembly includes a first fixing member, a connecting member, and a second fixing member. The driving assembly is fixed to the first fixing member, and the second fixing member and the connecting member are fixed to the crossbeam. The driving assembly includes a slider connected to the connecting member. The first fixing member and the second fixing member are slidable relative to each other. The first fixing member forms a channel that limits the sliding of the second fixing member.

8. The range hood according to claim 7, characterized in that, The first fixing member and the second fixing member are connected by a slide rail assembly.

9. The range hood according to claim 7, characterized in that, The second fixing member includes two parts, and the first fixing member includes a plate and two side wings. The two side wings are respectively located on both sides of the plate and on the outside of the two second fixing members. The channel is formed between the two side wings.

Images