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 a guide plate, and the guide plate is provided with a first oil screen and a second oil screen with fixed positions. The lifting assembly can be switched between a first position and a second position relative to the body. In the first position, the first oil screen is exposed outside the body and the second oil screen is hidden in the body. In the second position, the first oil screen and the second oil screen are both exposed outside the body. The range hood can improve the negative pressure distribution and the smoke suction effect by changing the position of the lifting assembly and making the first oil screen alone or together with the second oil screen form a smoke suction port.

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, island-style range hoods are gradually becoming more common in large apartments and villas. However, in order to match the overall kitchen setup, island-style range hoods are positioned far from the cooktop and have a slimmer design, which results in poorer smoke extraction. 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 a guide plate, and the guide plate is provided with a first oil net and a second oil net 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 net is exposed outside the main body and the second oil net is hidden inside the main body. When the lifting assembly is in the second position, both the first oil net and the second oil net are exposed outside the main body.

[0007] The aforementioned range hood, by changing the position of the lifting component, allows the first oil filter to form a smoke inlet alone or together with the second oil filter, improving the negative pressure distribution and thus enhancing the smoke extraction effect.

[0008] In some embodiments, the first oil mesh is provided with a plurality of first smoke holes in the shape of strips, and the plurality of first smoke holes are arranged at intervals along the length direction of the range hood.

[0009] In some embodiments, the second oil mesh is a honeycomb oil mesh structure.

[0010] In some embodiments, the guide plate includes a first plate, a connecting plate, and a second plate. The first plate is provided with a first oil mesh, and the second plate is provided with a second oil mesh. The connecting plate includes a first end and a second end facing away from each other. The first plate is connected to the first end, and the second plate is connected to the second end. The first plate and the second plate are located on opposite sides of the connecting plate.

[0011] 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.

[0012] 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 two guide vanes forming an angle between them. Each guide vane is rotatably connected to the connecting assembly and the main body. When the lifting assembly is located at different positions relative to the main body, the distance between the two guide vane portions connecting the main body is different.

[0013] In some embodiments, each deflector is connected to a first side connecting plate, and the first side connecting plates of different deflectors are spaced apart. The lifting assembly includes a decorative plate that covers the gap between two first side connecting plates connected to different deflectors.

[0014] In some embodiments, the lifting assembly includes a base plate, the connecting assembly includes a crossbeam, the base plate and the crossbeam extend along the length of the range hood, the crossbeam has the same length as the base plate, and the crossbeam connects to the base plate.

[0015] In some embodiments, the fan assembly includes a volute and a fan, the fan being located within the volute, the volute having an air inlet whose axis is perpendicular to the length direction of the guide plate.

[0016] In some embodiments, the body includes a frame assembly and a fixing assembly. The fan assembly is disposed within the frame assembly. The fixing assembly includes a mounting frame, a first cover plate, and a second cover plate. The frame assembly is fixedly connected to the mounting frame via a mounting plate. The first cover plate has a first notch, and the second cover plate has a second notch. The first cover plate and the second cover plate are connected and together cover at least a portion of the mounting plate and the top opening of the mounting frame. The first notch and the second notch together form a mounting opening. The frame assembly passes through the mounting opening and is connected to the mounting frame.

[0017] 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 connecting assembly includes a first fixing member, a second connecting member, and a second fixing member. The drive assembly is fixed to the first fixing member, and the second fixing member is fixedly connected to the second connecting member and the lifting assembly. The drive assembly includes a slider connected to the second 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.

[0018] 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

[0019] 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:

[0020] Figure 1 This is a perspective view of a range hood according to an embodiment of this application;

[0021] Figure 2 This is a front view of the range hood according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the bottom surface of the range hood according to an embodiment of this application;

[0023] Figure 4 This is another perspective view of the range hood according to the embodiments of this application;

[0024] Figure 5 This is another front view of the range hood according to an embodiment of this application;

[0025] Figure 6 This is another bottom view of the range hood according to an embodiment of this application;

[0026] Figure 7 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;

[0027] Figure 8 This is a schematic diagram of the lifting component in the first position according to an embodiment of this application;

[0028] Figure 9 This is another structural schematic diagram of the lifting component in the first position according to an embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the lifting component in the second position according to an embodiment of this application;

[0030] Figure 11 This is a schematic diagram of the internal structure of the range hood according to an embodiment of this application;

[0031] Figure 12 This is a partially exploded view of the range hood according to an embodiment of this application;

[0032] Figure 13 This is another exploded view of the range hood according to an embodiment of this application;

[0033] Figure 14 This is a further exploded view of the range hood according to an embodiment of this application;

[0034] Figure 15This is a schematic diagram showing the relationship between the orthographic projection of the first oil mesh and the orthographic projection of the air inlet in 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] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower level than the second feature.

[0039] This disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] 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.

[0041] The main body 12 contains a fan assembly 16 (see Figure 9 The lifting assembly 14 is movably connected to the main body 12. The lifting assembly 14 includes a guide plate 18, which has a first oil screen 20 and a second oil screen 22 with 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 second position, both the first oil screen 20 and the second oil screen 22 are exposed outside the main body 12. When the lifting assembly 14 is in the first position, the first oil screen 20 is exposed outside the main body 12 and the second oil screen 22 is hidden inside the main body 12.

[0042] The range hood 100 described above, through the positional change of the lifting component 14, enables the first oil filter 20 to form a smoke inlet 23 alone or together with the second oil filter 22, thereby improving the negative pressure distribution and thus enhancing the smoke extraction effect.

[0043] Specifically, the range hood 100 also includes an oil cup 24, which is located at the bottom of the deflector plate 18 and collects oil droplets falling from the deflector plate 18. In one embodiment, the range hood 100 can be an island range hood or a central island range hood. The range hood 100 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, and the lifting assembly 14 corresponds to the position of the burner on the cooktop. During cooking, the range hood 100 is turned on to extract the fumes generated during the cooking process.

[0044] When the stove fumes are light, the lifting assembly 14 can be in the first position, and the range hood 100 absorbs the fumes through the first oil filter 20. When the stove fumes are heavy, the lifting assembly 14 can be lowered to the second position, and the range hood 100 absorbs the fumes through the first oil filter 20 and the second oil filter 22. On the one hand, the suction port 23 formed by the two oil filters lowers, allowing it to get closer to the stove and improve the suction effect. On the other hand, during the lifting process, the lifting assembly 14 can change the tilt angle of the oil filter suction port 23, improving the negative pressure distribution and enhancing the suction effect. Additionally, the range hood may include a controller and a fume sensor. The controller is electrically connected to the fume sensor, which collects fume data. The controller calculates the fume concentration based on the fume data and controls the lifting assembly to move to a specific working position based on the fume concentration. This working position can be the first position, the second position, or other positions. The correspondence between fume concentration and working position can be pre-calibrated and stored in the range hood 100.

[0045] 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.

[0046] 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 7 (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 7 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.

[0047] Please combine Figures 1-3 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 4-6 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.

[0048] 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.

[0049] 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.

[0050] 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. In another embodiment, the first oil mesh 20 and / or the second oil mesh 22 may be formed by directly opening holes in the baffle. 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. In one example, both the first oil mesh 20 and the second oil mesh 22 may be made of metal.

[0051] 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.

[0052] In some embodiments, the first oil filter 20 is provided with a plurality of first smoke-absorbing holes 25 in the shape of strips, and the plurality of first smoke-absorbing holes 25 are arranged at intervals along the length of the range hood 100. In this way, the smoke-absorbing effect can be improved.

[0053] 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.

[0054] In some embodiments, the second oil mesh 22 has a honeycomb structure. In this way, it can absorb the escaping oil fumes.

[0055] 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.

[0056] In one example, the second oil mesh 22 can be formed by directly forming smoke holes on the guide plate.

[0057] In some embodiments, the deflector 18 includes a first plate 26, a connecting plate 28, and a second plate 30. The second plate 30 is provided with a second oil mesh 22, and the first plate 26 is provided with a first oil mesh 20. The connecting plate 28 includes a first end and a second end facing away from each other. The first plate 26 is connected to the first end, and the second plate 30 is connected to the second end. The first plate 26 and the second plate 30 are located on opposite sides of the connecting plate 28. In this way, the deflector 18 can expose or hide the second oil mesh 22 according to the lifting movement of the lifting assembly 14.

[0058] Specifically, in the illustrated embodiment, the first plate 26 is substantially parallel to the second plate 30, and the connecting plate 28 is perpendicularly connected to the first plate 26 and the second plate 30. The tilt angles of the first plate 26 and the second plate 30 are substantially the same. During the lifting and lowering process of the lifting assembly 14, the tilt angle of the overall guide plate 18 changes, thereby changing the tilt angles of the first plate 26 and the second plate 30, and thus enabling the tilt angles of the first oil mesh 20 and the second oil mesh 22 to adapt to the lifting stroke of the lifting assembly 14.

[0059] In one embodiment, the deflector 18 can be a one-piece molded structure. For example, the deflector 18 can be formed by forming a folded edge using sheet metal parts through a pressing process, thereby forming a first plate 26, a connecting plate 28, and a second plate 30. The first plate 26 and the second plate 30 are respectively provided with mounting holes. The first oil mesh 20 can be installed in the mounting hole of the first plate 26, and the second oil mesh 22 can be installed in the mounting hole of the second plate 30. It is understood that in other embodiments, the deflector 18 can also be a split structure. For example, the first plate 26, the connecting plate 28, and the second plate 30 are manufactured separately and can be connected together by welding or other methods.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In some embodiments, the range hood 100 includes a drive assembly 32 and a connecting assembly 34. The drive assembly 32 is connected to a lifting assembly 14 via the connecting assembly 34. The lifting assembly 14 includes two guide vanes 158, which form an included angle (greater than zero degrees and less than 180 degrees). Each guide vane 18 rotatably connects the connecting assembly 34 and the main body 12. When the lifting assembly 14 is in different positions relative to the main body 12, the distance between the portions 36 of the two guide vanes 18 connecting the main body 12 is different. This improves the smoke extraction effect.

[0064] Specifically, viewed 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.

[0065] 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 7 (As shown).

[0066] When the lifting assembly 14 is in the first position, the smoke inlets 23 on both sides are provided by the first oil mesh 20 on both sides. When the lifting assembly 14 is in the second position, the smoke inlets 23 on both sides are provided by the first oil mesh 20 and the second oil mesh 22 on both sides. That is, when the lifting assembly 14 is in the first position, it provides two smoke inlets 23, and when it is in the second position, it provides four smoke inlets 23. In other words, when the lifting assembly 14 switches from the first position to the second position, the two smoke inlets 23 become four smoke inlets 23, with the lower smoke inlet 23 being the main smoke inlet and the upper smoke inlet 23 being the auxiliary smoke inlet, which improves the negative pressure distribution and greatly enhances the smoking effect.

[0067] Please combine Figure 8Viewed from the side of the range hood 100, the two guide plates 18 and the main body 12 can form a triangle (as shown by the dotted line). The line connecting the two guide plates 18 parts 36 of the main body 12 forms the base of the triangle, and the two guide plates 18 form the two sides of the triangle.

[0068] When the lifting component 14 is in different positions relative to the main body 12, the length of the bottom edge will change. For example, please refer to... Figure 10 After the lifting assembly 14 descends, the distance between the two guide plates 18 sections 36 connecting the main body 12 decreases, the base becomes shorter, and the apex angle formed by the two sides becomes smaller. The entire triangle becomes more slender, which is more conducive to the distribution of negative pressure. Moreover, with the base shorter, the obstruction of the lifting assembly 14 to the user's field of vision is reduced, and the user's spatial perception is better throughout the operation.

[0069] In some implementations, please refer to Figure 8 The main 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 the position change of the lifting assembly 14, the slider 38 slides in the groove 42 to adjust the tilt angle of the guide plate 18 relative to the main body 12. Thus, during the lifting process of the lifting assembly 14, the guide plate 18 can change its tilt angle as a whole to adapt to the position change of the lifting assembly 14.

[0070] Specifically, the upper end of the guide plate 18 can be partially located between the two side plates 40, and the sliding member 38 is rotatably connected to the upper end of the guide plate 18. The slide groove 42 can be tilted downward relative to the horizontal plane at an angle. 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 portion 36 connecting to the body 12 also changes.

[0071] Specifically, during the descent of the lifting assembly 14, the second oil screen 22 gradually becomes exposed, the angle A gradually increases, the included angle between the two guide plates 18 gradually decreases, the guide plates 18 appear more inclined, and the position of the guide plate 18 part 36 connecting the body 12 moves obliquely downward, making the distance between the two guide plate 18 parts 36 connecting the body 12 smaller. At the same time, more of the guide plate 18 is exposed, and 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.

[0072] In some embodiments, each deflector 18 is connected to a first side connecting plate 44, and the first side connecting plates 44 of different deflectors 18 are spaced apart. The lifting assembly 14 includes a decorative plate 46, which covers the gap 48 between the two first side connecting plates 44 connected to the different deflectors 18. In this way, the gap 48 between the two first side connecting plates 44 can be avoided from affecting the smoking effect.

[0073] Specifically, each guide plate 18 has a first side connecting plate 44 fixed on its left and right sides. The first side connecting plate 44 is provided to prevent oil fumes from entering the range hood 100 from the side.

[0074] A certain amount of space needs to be provided between the two first-side connecting plates 44 located on the same side so that each guide plate 18 can move smoothly during the lifting assembly 14. The gap 48 between the two first-side connecting plates 44 located on the same side is covered by a decorative plate 46 so that a negative pressure zone is not formed on the side of the range hood 100, which would affect the smoke extraction effect of the guide plate 18.

[0075] In addition, adding a decorative panel 46 can also serve an aesthetic purpose, enhancing the overall appearance of the range hood 100 and preventing fingers from being pinched.

[0076] In some embodiments, each deflector 18 is connected to a first side connecting plate 44 on both sides, and the lifting assembly 14 includes a first connector 50 that connects the two first side connecting plates 44. In this way, the strength of the deflector 18 can be guaranteed.

[0077] Specifically, because the range hood 100 is relatively long (in one example, the range hood 100 is approximately 1.2m long), the baffle plate 18 is also relatively long. By providing the first connecting member 50, the strength of the baffle plate 18 can be enhanced, preventing deformation or damage to the baffle plate 18. The first connecting member 50 can connect the inner surfaces of the two first side connecting plates 44 by means such as screws.

[0078] In some embodiments, the lifting assembly 14 includes a base plate 52 and two second side connecting plates 54, which are respectively disposed at both ends of the base plate 52 along its length. One second side connecting plate 54 is located between two first side connecting plates 44 on the same side. A connecting assembly 34 connects the base plate 52 and the second side connecting plates 54, and a decorative plate 46 covers the gap 48 between the first side connecting plates 44 and the second side connecting plates 54. In this way, the gap 48 between the first side connecting plates 44 and the second side connecting plates 54 can be avoided from affecting the smoking effect.

[0079] Specifically, on the same side of the range hood 100, a second side connecting plate 54 is located between two first side connecting plates 44, forming two gaps 48 between the second side connecting plate 54 and the two first side connecting plates 44. A decorative plate 46 covers these two gaps 48 to prevent the two gaps 48 from forming a negative pressure zone on the side of the range hood 100, thus affecting the smoke extraction effect of the baffle plate 18. The baffle plate 18 can rotate to connect to the assembly 34. The shape of the decorative plate 46 is adapted to the shape formed by the two first side connecting plates 44 and the second side connecting plate 54 on the same side, resulting in a more aesthetically pleasing appearance. The decorative plate 46 can be fixedly connected to the second side connecting plate 54.

[0080] The connecting component 34 connects the base plate 52 and the second side connecting plate 54, which makes the lifting component 14 more stable during the lifting process.

[0081] In some embodiments, 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. The crossbeam 56 can be a through-beam, and its length is the same as that of the base plate 52. The crossbeam 56 connects to the base plate 52. In this way, the lifting assembly 14 can be raised and lowered synchronously on both sides, preventing tilting and jamming, and achieving balanced lifting.

[0082] Specifically, the bottom inner side of the deflector 18 is rotatably connected to the crossbeam 56, please refer to... Figure 9 The bottom inner side of the guide plate 18 is provided with a first reinforcing plate 55, and the outer side of the crossbeam 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 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.

[0083] In some embodiments, the lifting assembly 14 includes a second side connecting plate 54, which is disposed at both ends of the base plate 52 along its length. The connecting assembly 34 includes a connecting portion 58, which is disposed at both ends of the crossbeam 56 along its length. The second side connecting plate 54 connects to the connecting portion 58. This further ensures the synchronicity of lifting on both sides of the lifting assembly 14 and increases the connection strength between the base plate 52 and the connecting assembly 34.

[0084] In some embodiments, the fan assembly 16 includes a volute 59 and a fan 60, with the fan 60 located inside the volute 59. The volute 59 has an air inlet 62, the axis L1 of which is perpendicular to the length direction of the guide plate 18. This can improve the smoke extraction effect.

[0085] Specifically, please combine Figure 9 The axis L1 of the air inlet 62 can be parallel to the drawing (along the left-right direction), and the length direction of the guide plate 18 can be perpendicular to the drawing. When the fan 60 starts, a negative pressure is formed at the air inlet 62 of the volute 59, drawing the fumes downwards. Because the axis L1 of the air inlet 62 is perpendicular to the length direction of the guide plate 18, the fumes, after being drawn into the range hood 100 from the oil mesh, can reach the air inlet 62 through a shorter path, be drawn in by the fan 60, and discharged into the flue. It can be understood that in other embodiments, the axis L1 of the air inlet 62 can also face downwards at an angle.

[0086] In addition, the fan assembly 16 is arranged in the same direction as the length of the range hood 100, with one air inlet 62 facing the user side. The fan assembly 16 is arranged in the center of the width of the range hood 100, and the two guide plates 18 are arranged symmetrically along the central axis L2 of the width side of the range hood 100, so that the suction force formed by the fan 60 at the two guide plates 18 is basically the same.

[0087] When the lifting assembly 14 is in the second position, the two second oil filters 22 are exposed, forming two smoke inlets 23 at the top, and the two first oil filters 20 form two smoke inlets 23 at the bottom. The negative pressure is diffused through multiple smoke inlets 23 in different directions, improving the overall smoke extraction effect. The centrally located fan 60 can better distribute the negative pressure on both sides of the range hood 100.

[0088] In some implementations, please refer to Figure 9 The volute 59 has two air inlets 62, which are located on opposite sides of the volute 59 (e.g., Figure 9 As shown on both sides, the lifting assembly 14 includes two guide vanes 18 forming an angle between them. One guide vane 18 is located below one of the air inlets 62, and the other guide vane 18 is located below the other air inlet 62. This improves the smoking effect.

[0089] Specifically, the deflector 18 is located below the air inlet 62 of the volute 59, reducing the path of oil fumes from the deflector 18 to the volute 59 and improving the smoke extraction effect. One air inlet 62 faces the user side, and the other air inlet 62 faces away from the user side.

[0090] In some embodiments, the orthographic projection 63 of the first oil mesh 20 on the volute 59 covers the orthographic projection 65 of the air inlet 62 on the volute 59. In this way, the oil fumes can be gathered towards the air inlet 62.

[0091] Specifically, the smoke inlet 23 formed by the first oil mesh 20 can serve as the main smoke inlet 23. Since the range hood 100 is relatively long overall, the first oil mesh 20 is also relatively long overall, and the negative pressure area formed by the first oil mesh 20 is relatively large. The orthogonal projection of the air inlet 62 on the volute 59 is located within the orthogonal projection of the first oil mesh 20 on the volute 59. This allows the negative pressure formed at the air inlet 62 when the fan 60 is started to be expanded through the first oil mesh 20. The expanded negative pressure area can basically cover the range of oil fumes from the stove.

[0092] The orthographic projection 65 of the air intake 62 on the volute 59 is located within the orthographic projection 63 of the first oil mesh 20 on the volute 59. This can be understood as the air intake 62's orthographic projection 65 on the volute 59 being located within the boundary of the first oil mesh 20's orthographic projection 63 on the volute 59 in both length and width.

[0093] For example, please combine Figure 15 The first oil mesh 20 is projected onto the volute 59 in a rectangular shape (63). The air inlet 62 is projected onto the volute 59 in a rectangular shape (65) or in a straight line (65). The rectangle or straight line formed by the projection of the air inlet 62 onto the volute 59 is located within the boundary of the rectangle formed by the projection of the first oil mesh 20 onto the volute 59 (63).

[0094] In some implementations, please refer to Figures 10 to 13 The main body 12 includes a frame assembly 64 and a fixing assembly 66. The fan assembly 16 is disposed within the frame assembly 64. The fixing assembly 66 includes a mounting frame 68, a first cover plate 70, and a second cover plate 72. The frame assembly 64 is fixedly connected to the mounting frame 68 via the mounting plate 74. The first cover plate 70 has a first notch 76, and the second cover plate 72 has a second notch 78. The first cover plate 70 and the second cover plate 72 are connected and together cover at least a portion of the mounting plate 74 and the top opening of the mounting frame 68. The first notch 76 and the second notch 78 together form a mounting opening 80. The frame assembly 64 passes through the mounting opening 80 and is connected to the mounting frame 68. This facilitates the installation of the cover plate.

[0095] Specifically, the first cover plate 70 and the second cover plate 72 can be installed using a snap-fit ​​method. During installation, the mounting plate 74 can be fixed to the inside of the mounting frame 68 first, then the rack assembly 64 can be installed on the mounting plate 74, followed by the first cover plate 70 and the second cover plate 72. The first notch 76 and the second notch 78 can avoid the rack assembly 64. The first cover plate 70 and the second cover plate 72 are connected to form a frame-like structure, which can cover part of the mounting plate 74 and the top opening of the mounting frame 68.

[0096] In the illustrated embodiment, the rack assembly 64 is generally rectangular, and the mounting opening 80 formed by the first notch 76 and the second notch 78 is square. The rack assembly 64 and the mounting plate 74 can be connected by screws, welding, or other means.

[0097] In this embodiment, since the fan 60 is placed in the middle, the cover plate is split into a first cover plate 70 and a second cover plate 72, which not only saves materials and facilitates processing, but also makes installation easier.

[0098] The fan assembly 16 can be fixed within the frame assembly 64. A check valve 82 is provided at the top of the frame assembly 64, and the air outlet 83 of the volute 59 can be connected to the check valve 82. A connecting assembly 34 can be connected to the frame assembly 64. In the direction of airflow, a fume sensor can be installed on the side wall of the fume duct upstream of the check valve 82. The fume sensor may include a light emitting unit and a light receiving unit.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 connecting assembly 34 includes a first fixing member 84, a second connecting member 86, and a second fixing member 88. The drive assembly 32 is fixed to the first fixing member 84, and the second fixing member 88 is fixedly connected to the second connecting member 86 and the lifting assembly 14. The drive assembly 32 includes a slider 90 (see reference). Figure 11 The slider 90 is connected to the second connector 86, and the first fixing member 84 and the second fixing member 88 can slide relative to each other. The first fixing member 84 forms a channel 98 to limit the sliding of the second fixing member 88. In this way, the lifting assembly 14 can be raised and lowered smoothly.

[0105] Specifically, 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 second connecting member 86 to rise and fall. The second 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.

[0106] In the illustrated embodiment, the second fastener 88 and the second connector 86 can be fixedly connected to the crossbeam 56. There are two second fasteners 88, and the second connector 86 is located between the two second fasteners 88.

[0107] The first fastener 84 can be securely connected within the rack assembly 64. Please refer to... Figure 14 The first fixing member 84 includes a plate 94 and two side wings 96. The two side wings 96 are respectively located on both sides of the plate 94, and each side wing 96 is located outside a corresponding second fixing member 88. The two side wings 96 are respectively located outside the two second fixing members 88, and the channel 98 formed between the two side wings 96 can limit the sliding of the second fixing member 88, ensuring that the lifting assembly 14 lifts and lowers smoothly.

[0108] 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.

[0109] 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.

[0110] In summary, the present application proposes a height-adjustable island range hood. When the stove fumes are light, the smoke inlet 23 can remain stationary to remove the fumes. When the stove fumes are heavy, the smoke inlet 23 lowers and changes its tilt angle, turning two smoke inlets 23 into four. The lower smoke inlet 23 is the main smoke absorber, while the upper smoke inlet 23 is the auxiliary smoke absorber, improving the negative pressure distribution and significantly enhancing the smoke extraction effect.

[0111] Specifically, when the amount of oil fumes is small, the range hood 100 can be operated without lifting, and the oil fumes can be drawn in through the two suction ports 23 formed by the two first oil filters 20 at the bottom. When the amount of oil fumes is large, the lifting component 14 can be lowered, changing from two suction ports 23 to four suction ports 23. The lower suction port 23 is the main suction port, and the upper suction port 23 is the auxiliary suction port. Moreover, during the descent, the tilt angle A of the guide plate 18 is adjusted to improve the negative pressure distribution, approximately match the oil fume rising path, and greatly improve the smoke extraction effect.

[0112] 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.

[0113] 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 a guide plate, and the guide plate is provided with a first oil net and a second oil net 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 net is exposed outside the main body and the second oil net is hidden inside the main body. When the lifting assembly is in the second position, both the first oil net and the second oil net are exposed outside the main body. 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. The range hood includes a drive assembly and a connecting assembly. The drive assembly is connected to the lifting assembly through the connecting assembly. The lifting assembly includes two guide plates that form an angle between them. Each guide plate is rotatably connected to the connecting assembly and the main body. When the lifting assembly is in different positions relative to the main body, the distance between the two guide plates connected to the main body is different.

2. The range hood according to claim 1, characterized in that, The first oil mesh has a plurality of first smoke holes in the shape of strips, and the plurality of first smoke holes are arranged at intervals along the length of the range hood.

3. The range hood according to claim 1 or 2, characterized in that, The second oil mesh has a honeycomb oil mesh structure.

4. The range hood according to claim 1, characterized in that, The guide plate includes a first plate, a connecting plate, and a second plate. The first plate is provided with the first oil mesh, and the second plate is provided with the second oil mesh. The connecting plate includes a first end and a second end that are opposite to each other. The first plate is connected to the first end, and the second plate is connected to the second end. The first plate and the second plate are located on opposite sides of the connecting plate.

5. The range hood according to claim 1, 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, Each guide vane is connected to a first side connecting plate, and the first side connecting plates of different guide vanes are spaced apart. The lifting assembly includes a decorative plate, which covers the gap between the two first side connecting plates connected to different guide vanes.

7. The range hood according to claim 5, 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.

8. The range hood according to claim 1, characterized in that, The fan assembly includes a volute and a fan, the fan being located inside the volute. The volute has an air inlet, the axis of which is perpendicular to the length of the guide plate.

9. The range hood according to claim 1, characterized in that, The main body includes a frame assembly and a fixing assembly. The fan assembly is disposed within the frame assembly. The fixing assembly includes a mounting frame, a first cover plate, and a second cover plate. The frame assembly is fixedly connected to the mounting frame via the mounting plate. The first cover plate has a first notch, and the second cover plate has a second notch. The first cover plate and the second cover plate are connected and together cover at least a portion of the mounting plate and the top opening of the mounting frame. The first notch and the second notch together form a mounting opening. The frame assembly passes through the mounting opening and is connected to the mounting frame.

10. The range hood according to claim 1, characterized in that, The range hood includes a drive assembly and a connecting assembly. The drive assembly is connected to the lifting assembly through the connecting assembly. The connecting assembly includes a first fixing member, a second connecting member, and a second fixing member. The drive assembly is fixed to the first fixing member. The second fixing member is fixedly connected to the second connecting member and the lifting assembly. The drive assembly includes a slider connected to the second 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.

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