Range hood

Abstract

The utility model discloses an oil smoke extractor. The oil smoke extractor comprises a box body; a flow guide cavity, the flow guide cavity is connected with the box body, and the flow guide cavity is provided with a cavity; a first smoke suction plate, the first smoke suction plate is arranged in the cavity, the first smoke suction plate is inclined downward from the rear side to the front side of the flow guide cavity, and the first smoke suction plate and the flow guide cavity jointly enclose a first flow guide cavity; a second smoke suction plate, the second smoke suction plate is movably connected with the flow guide cavity and arranged on the side away from the outlet of the first smoke suction plate, the second smoke suction plate has a first position and a second position, when in the first position, the second smoke suction plate is located in the cavity; when in the second position, at least a part of the second smoke suction plate extends out of the cavity from the front side of the flow guide cavity, and the second smoke suction plate, the flow guide cavity and the first smoke suction plate jointly enclose a second flow guide cavity; wherein the switching between the first position and the second position of the second smoke suction plate is realized through the movement of the second smoke suction plate. The oil smoke extractor can reduce the risk of smoke running on the front side of the flow guide cavity.

Description

Technical Field

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

[0002] In related technologies, range hoods collect and exhaust cooking fumes from the kitchen. Their main working principle is to draw air out of the kitchen, causing the fumes to circulate with the exhaust air, thus collecting them and expelling them through the range hood. However, for fully concealed or flush-mounted range hoods, due to their shallow depth (e.g., 330mm-370mm), there is a significant risk of smoke escaping from the front. Utility Model Content

[0003] This utility model provides a range hood to solve at least one of the above-mentioned technical problems.

[0004] This utility model provides a range hood. The range hood includes: The housing contains a fan assembly; A flow guiding cavity is connected to the box body, and the flow guiding cavity has a cavity with an opening at the lower end; A first smoke plate is disposed in the cavity. The first smoke plate is inclined downward from the rear side to the front side of the flow guide cavity. The first smoke plate and the flow guide cavity together form a first flow guide cavity. The second smoke plate is movably connected to the flow guide cavity and disposed on the side of the first smoke plate away from the opening. The second smoke plate has a first position and a second position. In the first position, the second smoke plate is located in the cavity. In the second position, at least a portion of the second smoke plate extends out of the cavity from the front side of the flow guide cavity. The second smoke plate, the flow guide cavity, and the first smoke plate together form a second flow guide cavity. The switching between the first position and the second position of the second smoking plate is achieved by the movement of the second smoking plate.

[0005] In the aforementioned range hood, at least a portion of the second smoke-absorbing plate extends out of the cavity from the front side of the guide cavity. The second smoke-absorbing plate, the guide cavity, and the first smoke-absorbing plate together form the second guide cavity, which can increase the air intake volume at the front side of the guide cavity to a certain extent. Thus, even with a relatively small depth of the guide cavity, the risk of smoke escaping from the front side of the guide cavity can be reduced to a certain extent.

[0006] In some embodiments, the first flow guide cavity and the second flow guide cavity are connected.

[0007] In some embodiments, the second smoke extraction plate is inclined in the direction from the first smoke extraction plate toward the front of the range hood.

[0008] In some embodiments, the range hood includes a support plate movably connected to the flow guide cavity, the upper end of the second smoke extraction plate being movably connected to the support plate, and the lower end of the second smoke extraction plate being movably connected to the first smoke extraction plate.

[0009] In some embodiments, the range hood includes a first rotating shaft, a first connecting portion at one end of the support plate, a second connecting portion at the upper end of the second smoke extraction plate, and the first rotating shaft passes through the first connecting portion and the second connecting portion, and the first rotating shaft is rotatably connected to both the first connecting portion and the second connecting portion.

[0010] In some embodiments, the range hood includes a second rotating shaft, a third connecting portion is provided at the lower end of the second smoke extraction plate, the third connecting portion is provided with a shaft hole, at least a portion of the second rotating shaft is located in the shaft hole and is rotatably connected to the third connecting portion.

[0011] In some embodiments, the range hood includes a first slide rail assembly and a second slide rail assembly. The first slide rail assembly includes a first slide rail and a first slider that are slidably connected. One of the first slide rail and the first slider is disposed on the air guide cavity, and the other is disposed on the support plate. The second slide rail assembly includes a second slide rail and a second slider that are slidably connected. One of the second slide rail and the second slider is disposed on the first smoke extraction plate, and the other is disposed on the second rotating shaft.

[0012] In some embodiments, the range hood includes flexible connectors, all of which are connected to the left end of the support plate and the left end of the second smoke extraction plate, and / or, all of which are connected to the right end of the support plate and the right end of the second smoke extraction plate.

[0013] In some embodiments, the range hood includes an oil cup disposed on the side wall of the first guide cavity near the front side of the first guide cavity and below the first smoke plate. The first smoke plate has a first smoke hole. When the second smoke plate is in the first position and the second position, the lower end of the second smoke plate does not overlap with the projection of the first smoke hole on the horizontal plane. The oil cup is used to collect the condensed oil dripping from the first smoke plate and the second smoke plate.

[0014] In some embodiments, the range hood includes a drive assembly connected to the second smoke extraction plate, the drive assembly being used to drive the second smoke extraction plate to switch between the first position and the second position.

[0015] In some embodiments, the range hood includes an operating element connected to the second smoke extraction plate, the operating element being used to drive the second smoke extraction plate to switch between a first position and a second position when operated.

[0016] In some embodiments, the range hood includes a locking mechanism for locking the position of the second smoke extraction plate.

[0017] In some embodiments, the second smoke plate is provided with a second smoke hole, and the edge of the second smoke hole is provided with an oil-blocking portion protruding in the direction away from the first smoke plate. The oil-blocking portion is used to prevent condensed oil from dripping from the second smoke hole.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the range hood in the first smoke extraction mode according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the range hood in the second smoke extraction mode according to an embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the range hood in the first smoke extraction mode according to an embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the range hood in the second smoke extraction mode according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the support plate according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the second smoking plate according to an embodiment of the present invention; Figure 7 for Figure 6 An enlarged view of part A of the second smoking plate; Figure 8 This is a schematic diagram of the structure of the first slide rail assembly according to an embodiment of the present invention; Figure 9This is a schematic diagram of the structure of the second slide rail assembly according to an embodiment of the present invention.

[0021] Explanation of key component reference numerals: Range hood 100, housing 10, flow guide cavity 20, first smoke extraction plate 30, second smoke extraction plate 40, support plate 50, first rotating shaft 60, second rotating shaft 70, first slide rail assembly 80, second slide rail assembly 90, oil cup 103, first flow guide cavity 22, second flow guide cavity 23, first smoke extraction hole 31, second connecting part 41, third connecting part 42, shaft hole 43, second smoke extraction hole 44, first connecting part 51, first slide rail 81, first slider 82, second slide rail 91, second slider 92, oil blocking part 441. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of the 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 utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, 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 the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly 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 utility model can be understood according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly 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 horizontal 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 horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. 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, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] Please refer to Figures 1 to 4 This utility model provides a range hood 100. The range hood 100 includes a housing 10, a flow guide cavity 20, a first smoke extraction plate 30, and a second smoke extraction plate 40. A fan assembly is installed inside the housing 10. The flow guide cavity 20 is connected to the housing 10 and has a cavity with an opening at its lower end. The first smoke extraction plate 30 is disposed in the cavity, and is inclined downwards from the rear to the front of the flow guide cavity 20. The first smoke extraction plate 30 and the flow guide cavity 20 together form a first flow guide cavity 22. The second smoke plate 40 is movably connected to the flow guide cavity 20 and is disposed on the side of the first smoke plate 30 away from the opening. The second smoke plate 40 has a first position and a second position. In the first position, the second smoke plate 40 is located in the cavity. In the second position, at least a portion of the second smoke plate 40 extends out of the cavity from the front side of the flow guide cavity 20. The second smoke plate 40, the flow guide cavity 20 and the first smoke plate 30 together form the second flow guide cavity 23.

[0028] The switching between the first and second positions of the second smoking plate 40 is achieved by the movement of the second smoking plate 40.

[0029] In the aforementioned range hood 100, at least a portion of the second smoke-absorbing plate 40 extends out of the cavity from the front side of the guide cavity 20. The second smoke-absorbing plate 40, the guide cavity 20, and the first smoke-absorbing plate 30 together form a second guide cavity 23, which can increase the air intake volume at the front side of the guide cavity 20 to a certain extent. Thus, even with a relatively small depth of the guide cavity 20, the risk of smoke escaping from the front side of the guide cavity 20 can be reduced to a certain extent.

[0030] Specifically, please combine Figure 1 The range hood 100 has vertical, horizontal, and front-back orientations; the front orientation is the direction the range hood 100 faces after installation. The range hood 100 can be installed above the cooking area to absorb and remove cooking fumes, maintaining a clean and comfortable kitchen environment. Please refer to... Figure 1 and Figure 2 The range hood 100 also includes a housing 10, and a flow guide cavity 20 is located below the housing 10 and can be fixedly connected to the lower end of the housing 10 by screws or welding. A fan assembly (not shown) is provided inside the housing 10.

[0031] Optionally, in the installed state, the rear surfaces of the housing 10 and the airflow guiding cavity 20 of the range hood 100 are vertically arranged to fit against or be close to the wall, while the front side of the housing 10 is away from the wall and close to the user. After the range hood 100 is installed, the housing 10 and the airflow guiding cavity 20 can be housed in a cabinet, making the kitchen more tidy.

[0032] In one embodiment, when the second smoke extraction plate 40 is in the first position, the range hood 100 is in a first smoke extraction mode, such as... Figure 1 and Figure 3 As shown. The second smoke extraction plate 40 is housed inside the cavity of the guide cavity 20. The first smoke extraction plate 30 is connected to the first guide cavity 22 and the fan assembly, and the second smoke extraction plate 40 is connected to the first smoke extraction plate 30 and the fan assembly. During the operation of the range hood 100, the cooking fumes are drawn into the first guide cavity 22 by the fan assembly, then pass through the first smoke extraction plate 30 and the second smoke extraction plate 40 in sequence before entering the fan assembly, and are then discharged from the kitchen by the fan assembly. It can be understood that the first smoke extraction mode can be used for daily cooking or when the amount of fumes is small, ensuring that the fumes smoothly enter the guide cavity 20 while maintaining the overall flat and beautiful appearance of the range hood 100.

[0033] When the second smoke extraction plate 40 is in the second position, the range hood 100 is in the second smoke extraction mode, such as... Figure 2 and Figure 4As shown. At least a portion of the second smoke extraction plate 40 extends out of the cavity from the front side of the guide cavity 20. The second smoke extraction plate 40, the guide cavity 20, and the first smoke extraction plate 30 together form the second guide cavity 23. The first smoke extraction plate 30 is connected to the first guide cavity 22 and the fan assembly, and the second guide cavity 23 is connected to the second smoke extraction plate 40 and the fan assembly. During the operation of the range hood 100, some of the cooking fumes are drawn into the first guide cavity 22 by the fan assembly, then pass through the first smoke extraction plate 30 into the fan assembly, and are discharged from the kitchen by the fan assembly. At the same time, another portion of the cooking fumes are drawn into the second guide cavity 23 by the second smoke extraction plate 40 by the fan assembly, then enter the fan assembly, and are discharged from the kitchen by the fan assembly. It can be understood that the second smoke extraction mode can form a stronger negative pressure zone at the front end of the guide cavity 20, thereby drawing in more cooking fumes located in front, which is suitable for high-temperature stir-frying or cooking scenarios with a large amount of cooking fumes.

[0034] Furthermore, since the first smoke-absorbing plate 30 is inclined downwards from the rear to the front of the guide cavity 20, when the range hood 100 is installed, the angle between the side of the first smoke-absorbing plate 30 facing the cavity opening and the wall below the range hood 100 is an acute angle. This arrangement optimizes the pressure radiation direction of the range hood 100, increases the negative pressure area, and improves the smoke extraction effect. Moreover, the grease and oil separated by the first smoke-absorbing plate 30 will flow to the front end of the first smoke-absorbing plate 30 under the influence of gravity. The oil cup 103 can be located below the front end of the first smoke-absorbing plate 30 to collect the dripping grease, allowing users to more easily disassemble and install the oil cup 103, improving the user experience. Optionally, the vertical cross-section of the space formed by the first smoke-absorbing plate 30 and the wall below the range hood 100 in the front-back direction is approximately triangular.

[0035] In one embodiment, the flow guide cavity 20 includes a front plate (not shown). The front plate can engage with the second smoke plate 40 when it is extended to avoid interfering with the movement of the second smoke plate 40. For example, the front plate can be rotated open with its upper end as an axis when the second smoke plate 40 is extended, and reset and close when the second smoke plate 40 is retracted.

[0036] In some implementations, please refer to Figure 4 The first guide cavity 22 and the second guide cavity 23 are connected.

[0037] In the above embodiments, the continuity and smoothness of the airflow channel are improved.

[0038] Specifically, the first guide cavity 22 and the second guide cavity 23 can be used to collect and guide oil fumes. In particular, the second guide cavity 23 is formed when the second smoke-absorbing plate 40 is in the second position. At this time, at least a portion of the second smoke-absorbing plate 40 extends out of the cavity from the front side of the guide cavity body 20, and together with the guide cavity body 20 and the first smoke-absorbing plate 30, forms the second guide cavity 23. The rear part of the second guide cavity 23 communicates with the first guide cavity 22.

[0039] During cooking, some of the fumes can enter through the first guide cavity 22 and then converge with the fumes in the second guide cavity 23 to be drawn into the fan assembly and discharged from the kitchen. Because the first guide cavity 22 and the second guide cavity 23 are connected, the flow of fumes before entering the fan assembly is smoother, reducing flow resistance and turbulence, which helps to form a stable airflow path, thereby significantly improving the suction efficiency and front-end smoke capture effect of the range hood 100.

[0040] In some implementations, please refer to Figure 3 and Figure 4 The second smoke extraction plate 40 is inclined upward from the first smoke extraction plate 30 toward the front of the range hood 100.

[0041] The above embodiments can improve the oil filtration effect and increase the smoke coverage.

[0042] Specifically, the second smoke extraction plate 40 is positioned in front of the first smoke extraction plate 30 and tilted upwards. On the one hand, when the second smoke extraction plate 40 is in the first position, it can form a relatively tilted positional relationship with the first smoke extraction plate 30, making it easier for the oil fumes in the guide cavity 20 to collide with the surfaces of the first smoke extraction plate 30 and the second smoke extraction plate 40 and form condensed oil, thereby improving the oil filtration effect and reducing the accumulation of oil stains inside the fan assembly. On the other hand, when the second smoke extraction plate 40 is in the second position, it can form a wider negative pressure zone in front of the guide cavity 20, which helps to form a wider air intake range and improve the smoke coverage.

[0043] Optionally, the tilt angle of the second smoke extraction plate 40 can be set according to actual needs to balance the efficiency of smoke extraction and the stability of airflow.

[0044] In some implementations, please refer to Figures 2 to 5 The range hood 100 includes a support plate 50, which is movably connected to the flow guide cavity 20. The upper end of the second smoke plate 40 is movably connected to the support plate 50, and the lower end of the second smoke plate 40 is movably connected to the first smoke plate 30.

[0045] In the above embodiments, the stability of the second smoke extraction plate 40 is improved, and the smoke collection capacity of the range hood 100 is enhanced.

[0046] Specifically, during the process of the second smoke plate 40 switching from the first position to the second position, the support plate 50 moves relative to the guide cavity 20 and drives the second smoke plate 40 to move synchronously to extend the cavity from the front side of the guide cavity 20. At the same time, since the first smoke plate 30 is inclined downward from the rear side to the front side of the guide cavity 20, the lower end of the second smoke plate 40 moves along the first smoke plate 30, and the upward tilt angle of the second smoke plate 40 gradually increases until the second smoke plate 40 moves to the second position.

[0047] It is understandable that the support plate 50 can provide a reliable fulcrum for the upper end of the second smoke extraction plate 40, so that the second smoke extraction plate 40 remains stable during movement and in the second position. On the other hand, it can limit the flow direction of oil fumes, thereby improving the smoke collection capacity of the range hood 100.

[0048] In some implementations, please refer to Figures 3 to 6 The range hood 100 includes a first rotating shaft 60, a first connecting part 51 at one end of a support plate 50, a second connecting part 41 at the upper end of a second smoke extraction plate 40, and the first rotating shaft 60 passes through the first connecting part 51 and the second connecting part 41. The first rotating shaft 60 is rotatably connected to both the first connecting part 51 and the second connecting part 41.

[0049] In the above embodiments, smooth angle changes can be achieved, ensuring the smoothness and reliability of the movement process.

[0050] Specifically, the support plate 50 and the second smoke plate 40 are connected by a rotational connection with the first rotating shaft 60 as the rotation axis, so that the second smoke plate 40 can rotate relative to the support plate 50. Thus, when the second smoke plate 40 switches between the first position and the second position, it can achieve a smooth angle change, ensuring the smoothness and reliability of the movement process.

[0051] exist Figure 5 and Figure 6 In this embodiment, the first connecting portion 51 is an arc-shaped bend extending outward from the edge of the support plate 50, and the second connecting portion 41 is an arc-shaped bend extending outward from the upper edge of the second smoking plate 40. The first rotating shaft 60 passes through the first connecting portion 51 and the second connecting portion 41 to connect them together, thereby achieving a rotatable connection between the support plate 50 and the second smoking plate 40. Since both the first connecting portion 51 and the second connecting portion 41 have arc-shaped bend structures, both can rotate relative to the first rotating shaft 60, thus forming a rotatable connection between the support plate 50 and the second smoking plate 40 with the first rotating shaft 60 as the axis of rotation.

[0052] In some implementations, please refer to Figure 3 , Figure 4 and Figure 6 The range hood 100 includes a second rotating shaft 70, and a third connecting part 42 is provided at the lower end of the second smoke extraction plate 40. The third connecting part 42 is provided with a shaft hole 43. At least a part of the second rotating shaft 70 is located in the shaft hole 43 and is rotatably connected to the third connecting part 42.

[0053] In the above embodiments, smooth angle changes can be achieved, ensuring the smoothness and reliability of the movement process.

[0054] Specifically, the lower end of the second smoke plate 40 can rotate about the second rotating shaft 70 as the axis of rotation, so that when the second smoke plate 40 switches between the first position and the second position, it can achieve a smooth angle change, ensuring the smoothness and reliability of the movement process.

[0055] exist Figure 6 In this embodiment, the third connecting portion 42 is an arc-shaped bend extending outward from the lower edge of the second smoking plate 40. The second rotating shaft 70 passes through the third connecting portion 42, and because the third connecting portion 42 has an arc-shaped bend structure, the third connecting portion 42 can rotate relative to the second rotating shaft 70.

[0056] Optionally, the second rotating shaft 70 can be movably connected to the first smoking plate 30, so that the first smoking plate 30 and the second smoking plate 40 form a rotatable connection relationship with the second rotating shaft 70 as the axis of rotation.

[0057] In some implementations, please refer to Figure 8 and Figure 9 The range hood 100 includes a first slide rail assembly 80 and a second slide rail assembly 90. The first slide rail assembly 80 includes a first slide rail 81 and a first slider 82 that are slidably connected. One of the first slide rail 81 and the first slider 82 is disposed on the flow guide cavity 20, and the other is disposed on the support plate 50. The second slide rail assembly 90 includes a second slide rail 91 and a second slider 92 that are slidably connected. One of the second slide rail 91 and the second slider 92 is disposed on the first smoke extraction plate 30, and the other is disposed on the second rotating shaft 70.

[0058] In the above embodiments, the force balance and smoothness of movement of the second smoke plate 40 when switching to different positions are improved.

[0059] Specifically, the first slide rail assembly 80 is used to guide the relative movement between the support plate 50 and the flow guide cavity 20. The second slide rail assembly 90 is used to guide the relative movement between the first smoke plate 30 and the second smoke plate 40.

[0060] With the first slide rail assembly 80, the support plate 50 can slide smoothly in a straight line under the guidance of the first slide rail 81 (i.e., the first slider 82 slides along the first slide rail 81) or under the guidance of the first slider 82 (i.e., the first slide rail 81 slides along the first slider 82), thereby realizing the reciprocating motion of the support plate 50 relative to the flow guide cavity 20, providing guiding support for the extension and retraction of the second smoke plate 40.

[0061] With the second slide rail assembly 90, the second rotating shaft 70 can slide smoothly in a straight line under the guidance of the second slide rail 91 (i.e., the second slider 92 slides along the second slide rail 91) or under the guidance of the second slider 92 (i.e., the second slide rail 91 slides along the second slider 92), thereby realizing the reciprocating motion of the second smoking plate 40 relative to the first smoking plate 30, and providing guiding support for the extension and retraction of the second smoking plate 40.

[0062] exist Figure 3 and Figure 4 In the embodiment, the first slide rail 81 is disposed on the flow guide cavity 20, the first slider 82 is disposed on the support plate 50, the second slide rail 91 is disposed on the first smoke plate 30, and the second slider 92 is disposed on the second rotating shaft 70.

[0063] In some implementations, please refer to Figure 3 and Figure 4 The range hood 100 includes flexible connectors, all of which are connected to the left end of the support plate 50 and the left end of the second smoke extraction plate 40, and / or all of which are connected to the right end of the support plate 50 and the right end of the second smoke extraction plate 40.

[0064] In the above embodiments, the airtightness of the second guide cavity 23 can be improved, thereby improving the smoke extraction efficiency of the range hood 100.

[0065] Specifically, the flexible connector may include, but is not limited to, flexible sheets, soft baffles, or bendable film structures, and its material may be high-temperature resistant, oil-resistant silicone sheets, rubber sheets, or composite fiber cloth. The flexible connector is connected to the left end of the support plate 50 and the left end of the second smoke plate 40, and / or, the flexible connector is connected to the right end of the support plate 50 and the right end of the second smoke plate 40, respectively.

[0066] The flexible connector can form a closed or semi-closed partition area between the support plate 50 and the second smoke plate 40, so that when the second smoke plate 40 is in the second position, it together with the first smoke plate 30 and the guide cavity 20 constitutes the second guide cavity 23, making the second guide cavity 23 more closed.

[0067] In one embodiment, when the second smoke plate 40 extends forward to the second position, the angle between the support plate 50 and the second smoke plate 40 increases, and the flexible connector can be stretched accordingly. When the second smoke plate 40 retracts backward to the first position, the angle between the support plate 50 and the second smoke plate 40 decreases, and the flexible connector can be bent or retract accordingly.

[0068] In some implementations, please refer to Figures 1 to 4 The range hood 100 includes an oil cup 103, which is located on the side wall of the first guide cavity 22 near the front side of the first guide cavity 22 and below the first smoke plate 30. The first smoke plate 30 is provided with a first smoke hole 31. When the second smoke plate 40 is in the first position and the second position, the lower end of the second smoke plate 40 and the projection of the first smoke hole 31 on the horizontal plane do not overlap. The oil cup 103 is used to collect the condensed oil dripping from the first smoke plate 30 and the second smoke plate 40.

[0069] The above embodiments can improve the user experience and the smoke collection effect of the range hood 100.

[0070] Specifically, the first smoke plate 30 is provided with a plurality of first smoke holes 31 for drawing in oily smoke and causing some of the grease to condense and adhere to the surface of the first smoke plate 30 during the airflow.

[0071] The condensed oil on the second smoke extraction plate 40 will flow to its lower end under the influence of gravity. When the second smoke extraction plate 40 is in the first and second positions, the lower end of the second smoke extraction plate 40 does not overlap with the projection of the first smoke extraction hole 31 on the horizontal plane. This can, to a certain extent, prevent the condensed oil on the second smoke extraction plate 40 from directly dripping onto the stovetop through the first smoke extraction hole 31, while also ensuring that the smoke does not obstruct the entry of the smoke from the first smoke extraction hole 31, thereby improving the smoke collection effect.

[0072] In practical applications, the condensed oil from the second smoke plate 40 can drip into the area of ​​the first smoke plate 30 where the first smoke hole 31 is not provided, and then collect at the lower end of the first smoke plate 30 under the action of gravity.

[0073] The oil cup 103 is located below the first smoke plate 30 and can directly receive and store the condensed oil collected from the first smoke plate 30 and the second smoke plate 40, thereby realizing the centralized collection of oil stains.

[0074] Optionally, the number, shape, and distribution of the first smoke holes 31 can be determined according to actual needs, and this utility model does not impose specific limitations in this regard.

[0075] In some implementations, please refer to Figures 1 to 4 The range hood 100 includes a drive assembly connected to a second smoke extraction plate 40, which is used to drive the second smoke extraction plate 40 to switch between a first position and a second position.

[0076] In the above embodiments, the second smoking plate 40 can be automatically switched between the first position and the second position, thereby improving the user experience.

[0077] Specifically, the drive components (not shown) may include, but are not limited to, motor drive mechanisms, push rod mechanisms, cylinders, etc.

[0078] In one embodiment, the lower end of the second smoke-absorbing plate 40 is the active end, and the upper end of the second smoke-absorbing plate 40 is the driven end. The driving assembly may include a drive motor and a transmission assembly. The drive motor is connected to the lower end of the second smoke-absorbing plate 40 via the transmission assembly. The drive motor can drive the lower end of the second smoke-absorbing plate 40 to move forward towards the range hood 100 via the drive transmission assembly, and simultaneously, the upper end of the second smoke-absorbing plate 40 moves forward towards the range hood 100 under the drive of the lower end of the second smoke-absorbing plate 40, thereby switching the second smoke-absorbing plate 40 from a first position to a second position. Conversely, the driving assembly can drive the lower end of the second smoke-absorbing plate 40 to move backward towards the range hood 100 via the drive transmission assembly, and simultaneously, the upper end of the second smoke-absorbing plate 40 moves backward towards the range hood 100 under the drive of the lower end of the second smoke-absorbing plate 40, thereby switching the second smoke-absorbing plate 40 from a second position to a first position. In other embodiments, the upper end of the second smoke-absorbing plate 40 may be the active end, and the lower end of the second smoke-absorbing plate 40 may be the driven end.

[0079] In one embodiment, the drive assembly has a self-locking function and may include a drive motor and a transmission assembly. When the drive motor stops working, the drive assembly can maintain the second smoke plate 40 in its current position, preventing the second smoke plate 40 from shifting due to gravity or airflow, thereby ensuring the stability of the second smoke plate 40 in the first and second positions to a certain extent.

[0080] In some implementations, please refer to Figures 1 to 4 The range hood 100 includes an operating component connected to a second smoke extraction plate 40. The operating component is used to drive the second smoke extraction plate 40 to switch between a first position and a second position when operated.

[0081] The above implementation method can reduce costs.

[0082] Specifically, the operating components (not shown) include, but are not limited to, levers and paddles. The operator can manually operate the operating components to switch the second smoke plate 40 between the first position and the second position.

[0083] When the user pulls the operating component outward, the second smoke plate 40 can extend along the front direction of the guide cavity 20, so that the second smoke plate 40 is in the second position; when the user pushes the operating component backward, the second smoke plate 40 can be retracted into the guide cavity 20, so that the second smoke plate 40 returns to the first position.

[0084] The second smoke extraction plate 40 can be moved manually without the need for an additional motor, resulting in a relatively simple structure, low cost, and easy maintenance. Furthermore, users can more flexibly control the extension of the second smoke extraction plate 40 according to changes in the amount of smoke during cooking, thereby adjusting the size of the air intake area and the airflow path of the second guide cavity 23.

[0085] In one embodiment, the operating member is connected to the first rotating shaft 60, and the operating member can move the second smoke plate 40 between a first position and a second position by translating the first rotating shaft 60. In another embodiment, the first rotating shaft 60 can serve as the operating member, and the operator can move the second smoke plate 40 between the first position and the second position by operating the first rotating shaft 60.

[0086] In some implementations, please refer to Figures 1 to 4 The range hood 100 includes a locking mechanism for locking the position of the second smoke extraction plate 40.

[0087] In the above embodiments, the stability of the second smoking plate 40 can be improved, thereby ensuring the stability of the smoking effect to a certain extent.

[0088] Specifically, the locking mechanism is used to prevent the second smoking plate 40 from shaking or moving accidentally due to airflow impact or gravity when in the first and second positions.

[0089] Locking mechanisms include, but are not limited to, snap-fit ​​structures, elastic locking pins, friction damping structures, or magnetic positioning structures.

[0090] In one embodiment, the locking mechanism may include an elastic buckle disposed on the flow guide cavity 20, with a corresponding engaging groove or limiting hole on the second smoke plate 40. When the second smoke plate 40 rotates or slides to the first or second position, the elastic buckle can engage in the corresponding engaging groove or limiting hole under the action of elastic force, thereby achieving position locking. When the operator needs to switch between the first and second smoke modes, the second smoke plate 40 can be unlocked by applying a certain external force to overcome the elastic force of the elastic buckle.

[0091] In one embodiment, the locking mechanism may include a magnet disposed on the flow guide cavity 20, and a corresponding metal adsorption component is provided on the second smoke plate 40. When the second smoke plate 40 rotates or slides to the first position or the second position, the magnet can attract and fix the corresponding metal adsorption component under the action of magnetic force, thereby achieving position locking. When the operator needs to switch between the first smoke mode and the second smoke mode, a certain external force can be applied to overcome the magnetic force of the magnet, thereby unlocking the second smoke plate 40.

[0092] In some implementations, please refer to Figure 6 and Figure 7 The second smoke plate 40 is provided with a second smoke hole 44. The edge of the second smoke hole 44 is provided with an oil-blocking part 441 protruding in the direction away from the first smoke plate 30. The oil-blocking part 441 is used to prevent condensed oil from dripping from the second smoke hole 44.

[0093] The above implementation method can effectively prevent oil dripping, thereby improving the user experience.

[0094] Specifically, the oil baffle 441 may include, but is not limited to, an annular flange, an arc-shaped protrusion, or a folded edge structure.

[0095] When the oily smoke enters the second smoke inlet 44, some of the oily smoke condenses at the edge of the second smoke inlet 44 to form condensed oil. Due to the presence of the oil-blocking part 441, the condensed oil does not easily drip directly from the second smoke inlet 44 under the action of gravity. Instead, it gathers along the surface of the second smoke plate 40 to the lower end of the second smoke plate 40 and is eventually collected in the oil cup 103.

[0096] Optionally, the number, shape, and distribution of the second smoke holes 44 can be determined according to actual needs, and this utility model does not impose specific limitations in this regard.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this utility model. 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.

[0098] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A range hood, characterized in that, include: The housing contains a fan assembly; A flow guiding cavity is connected to the box body, and the flow guiding cavity has a cavity with an opening at the lower end; A first smoke plate is disposed in the cavity. The first smoke plate is inclined downward from the rear side to the front side of the flow guide cavity. The first smoke plate and the flow guide cavity together form a first flow guide cavity. The second smoke plate is movably connected to the flow guide cavity and disposed on the side of the first smoke plate away from the opening. The second smoke plate has a first position and a second position. In the first position, the second smoke plate is located in the cavity. In the second position, at least a portion of the second smoke plate extends out of the cavity from the front side of the flow guide cavity. The second smoke plate, the flow guide cavity, and the first smoke plate together form a second flow guide cavity. The switching between the first position and the second position of the second smoking plate is achieved by the movement of the second smoking plate.

2. The range hood according to claim 1, characterized in that, The first flow guide cavity and the second flow guide cavity are connected.

3. The range hood according to claim 1, characterized in that, The second smoke extraction plate is inclined in the direction of the first smoke extraction plate toward the front of the range hood.

4. The range hood according to claim 1, characterized in that, The range hood includes a support plate, which is movably connected to the flow guide cavity. The upper end of the second smoke extraction plate is movably connected to the support plate, and the lower end of the second smoke extraction plate is movably connected to the first smoke extraction plate.

5. The range hood according to claim 4, characterized in that, The range hood includes a first rotating shaft, a first connecting part at one end of the support plate, a second connecting part at the upper end of the second smoke extraction plate, and the first rotating shaft passes through the first connecting part and the second connecting part. The first rotating shaft is rotatably connected to both the first connecting part and the second connecting part.

6. The range hood according to claim 4, characterized in that, The range hood includes a second rotating shaft, and a third connecting part is provided at the lower end of the second smoke extraction plate. The third connecting part is provided with a shaft hole, and at least a portion of the second rotating shaft is located in the shaft hole and is rotatably connected to the third connecting part.

7. The range hood according to claim 6, characterized in that, The range hood includes a first slide rail assembly and a second slide rail assembly. The first slide rail assembly includes a first slide rail and a first slider that are slidably connected. One of the first slide rail and the first slider is disposed on the air guide cavity, and the other is disposed on the support plate. The second slide rail assembly includes a second slide rail and a second slider that are slidably connected. One of the second slide rail and the second slider is disposed on the first smoke extraction plate, and the other is disposed on the second rotating shaft.

8. The range hood according to claim 4, characterized in that, The range hood includes flexible connectors, all of which are connected to the left end of the support plate and the left end of the second smoke extraction plate, and / or, all of which are connected to the right end of the support plate and the right end of the second smoke extraction plate.

9. The range hood according to claim 1, characterized in that, The range hood includes an oil cup, which is located on the side wall of the first guide cavity near the front side of the first guide cavity and below the first smoke plate. The first smoke plate has a first smoke hole. When the second smoke plate is in the first position and the second position, the lower end of the second smoke plate does not overlap with the projection of the first smoke hole on the horizontal plane. The oil cup is used to collect the condensed oil dripping from the first smoke plate and the second smoke plate.

10. The range hood according to claim 1, characterized in that, The range hood includes a drive assembly connected to the second smoke extraction plate, and the drive assembly is used to drive the second smoke extraction plate to switch between the first position and the second position.

11. The range hood according to claim 1, characterized in that, The range hood includes an operating component connected to the second smoke extraction plate. The operating component is used to drive the second smoke extraction plate to switch between the first position and the second position when operated.

12. The range hood according to claim 11, characterized in that, The range hood includes a locking mechanism for locking the position of the second smoke extraction plate.

13. The range hood according to claim 1, characterized in that, The second smoke plate is provided with a second smoke hole, and an oil-blocking part is provided on the edge of the second smoke hole in a direction away from the first smoke plate. The oil-blocking part is used to prevent condensed oil from dripping from the second smoke hole.

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