Range hood

Abstract

This utility model relates to the field of kitchen appliance technology and discloses a range hood, including: a smoke collection hood with a smoke collection chamber and a smoke inlet communicating with the smoke collection chamber; a flow guiding assembly installed in the smoke collection chamber, including multiple flow guiding plates and a driving mechanism, wherein the multiple flow guiding plates are spaced apart in the smoke collection chamber in a left-right direction, and a smoke passage is formed between adjacent two flow guiding plates; the driving mechanism is used to drive the multiple flow guiding plates to rotate left and right relative to the smoke collection hood; the smoke inlet is connected to the smoke collection chamber through the smoke passage. When a single burner is used alone, the range hood with the flow guiding assembly can concentrate the airflow of the range hood on the side where the burner is working, which can not only improve the efficiency of removing oil fumes, but also reduce ineffective airflow.

Description

Technical Field

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

[0002] A range hood is a device used to collect cooking fumes. In Chinese kitchens, the stove below the range hood typically has two burners arranged side-by-side. Each burner can be used independently. Therefore, there are times when only one burner is in use. However, because the range hood's suction range covers both burners, when only one burner is used, the airflow at the smoke inlet corresponding to the unused burner is not effectively utilized; that is, the range hood has a significant amount of ineffective airflow in this situation. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a range hood that can reduce ineffective airflow when a single burner is working.

[0004] A range hood, comprising:

[0005] A smoke hood has a smoke collection chamber and a smoke inlet communicating with the smoke collection chamber;

[0006] A flow guiding assembly, installed in the smoke collection chamber, includes multiple flow guiding plates and a driving mechanism. The multiple flow guiding plates are spaced apart in the smoke collection chamber in the left-right direction, and a smoke passage is formed between two adjacent flow guiding plates. The driving mechanism is used to drive the multiple flow guiding plates to rotate left and right relative to the smoke collection hood. The smoke inlet is connected to the smoke collection chamber through the smoke passage.

[0007] Compared with the prior art, the range hood described in this utility model has the following beneficial effects:

[0008] When a single burner is used alone, a range hood equipped with a flow-guiding component can concentrate the airflow on the side of the burner that is working. This not only improves the efficiency of removing cooking fumes but also reduces ineffective airflow in such situations. Specifically, taking the left burner as an example, a drive mechanism rotates multiple flow-guiding plates to the right, creating a left-to-right guide channel for the smoke flow. Guided by these plates, the airflow is concentrated on the left burner. Conversely, when the right burner is working alone, the drive mechanism reverses, causing the flow-guiding plates to deflect to the left, changing the direction of the smoke flow from right to left, thus concentrating the airflow on the right burner. Similarly, if both burners are working simultaneously, the smoke flow channels on both sides simply need to be directed towards their respective burners. Therefore, a range hood with a flow-guiding component can reduce ineffective airflow when only one burner is working.

[0009] In one embodiment, the driving mechanism includes a driving member, a connecting plate, and a rocker arm. The connecting plate is rotatably connected to a plurality of the guide plates. One end of the rocker arm is rotatably connected to the connecting plate, and the other end of the rocker arm is rotatably connected to the driving end of the driving member and moves left and right under the drive of the driving member. The driving end of the driving member can swing back and forth relative to the guide plates under the reaction force of the rocker arm.

[0010] In one embodiment, the rocker arm includes a first arm, a second arm, and a third arm that are bent into a U-shape in sequence. The first arm is rotatably connected to the connecting plate, and the third arm is rotatably connected to the driving end of the driving member.

[0011] In one embodiment, the flow guiding assembly further includes a mounting frame, which is assembled inside the smoke collection hood. A plurality of flow guiding plates are spaced apart on the mounting frame in the left-right direction, and the upper and lower ends of the plurality of flow guiding plates are respectively rotatably connected to the mounting frame.

[0012] In one embodiment, the mounting frame includes a top plate and a bottom plate arranged opposite each other in the vertical direction and a pair of side plates arranged opposite each other in the horizontal direction. A plurality of the guide plates are located between the top plate and the bottom plate, and the upper and lower ends of the plurality of guide plates are rotatably connected to the top plate and the bottom plate, respectively. The driving component is mounted on the bottom plate.

[0013] In one embodiment, the flow guiding assembly further includes a mounting plate fixedly connected to the mounting frame and hinged to the fixed end of the drive member, so that the drive end of the drive member swings back and forth relative to the flow guiding plate under the reaction force of the rocker arm.

[0014] In one embodiment, the flow guiding assembly further includes a pair of connecting arms spaced apart from each other, with the two ends of the connecting arms rotatably connected to the connecting plate and the mounting frame, respectively, and one end of one of the connecting arms being coaxially rotatably connected to the rocker arm, the connecting plate, and the driving end of the driving member.

[0015] In one embodiment, along the front-rear direction of the smoke collection hood, the guide plate has a front sidewall and a rear sidewall, the upper and lower ends of the front sidewall are respectively rotatably connected to the mounting frame via a rotating shaft, and the rear sidewall is located on the rear side of the mounting frame.

[0016] In one embodiment, the rear sidewall gradually slopes downward toward the direction of the front sidewall.

[0017] In one embodiment, along the direction from the middle position of the smoke collection hood in the left-right direction to the left and right ends of the smoke collection hood, the guiding surface of the plurality of guide plates gradually increases in size, and the smoke passage is formed between the guiding surfaces of two adjacent guide plates.

[0018] In one embodiment, when the plurality of guide plates are rotated to be perpendicular to the plane where the smoke inlet is located, the plurality of guide plates are symmetrically arranged about the middle position in the left-right direction of the smoke collection hood.

[0019] In one embodiment, along the direction from the middle position toward the left and right ends of the smoke collection hood, the height of the top of the plurality of guide plates increases from low to high.

[0020] In one embodiment, there are multiple smoke inlets, and the smoke inlets are offset from the guide plate. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 The diagram shows the structure of the range hood from another perspective.

[0024] Figure 3 for Figure 2 A magnified view of part A in the image;

[0025] Figure 4 for Figure 2 A schematic diagram of the flow guiding component shown in the figure;

[0026] Figure 5 for Figure 4 The diagram shows the state of the flow guide assembly after the flow guide plate is rotated to the left.

[0027] Figure 6 for Figure 4 A schematic diagram of the flow guiding assembly shown in the diagram after the flow guiding plate is rotated to the right;

[0028] Figure 7 for Figure 4 A schematic diagram of the flow guiding component shown from another perspective;

[0029] Figure 8 for Figure 4 The diagram shows the structure of the flow guiding component from another perspective.

[0030] Figure 9 for Figure 8 A magnified view of part A in the image.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Smoke hood; 101. Smoke collection chamber; 102. Smoke inlet plate; 1021. Smoke inlet; 2. Flow guiding assembly; 201. Flow guiding plate; 2011. Front side wall; 2012. Rear side wall; 2013. Flow guiding surface; 202. Drive mechanism; 2021. Drive component; 2022. Connecting plate; 2023. Rocker arm; 20231. First support arm; 20232. Second support arm; 20233. Third support arm; 203. Mounting frame; 2031. Top plate; 2032. Bottom plate; 2033. Side plate; 2034. Flanged edge; 204. Mounting plate; 2041. First support plate; 2042. Second support plate; 2043. Third support plate; 205. Connecting arm; 206. Rotating shaft; 3. Smoke flow channel. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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. Therefore, they should not be construed as limitations on this application.

[0035] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The following is combined Figures 1 to 9 The following describes embodiments of the present invention.

[0038] According to embodiments of the present invention, such as Figure 1 , Figure 2 as well as Figures 4 to 8 As shown, a range hood is provided, including: a smoke collection hood 1, a flow guiding assembly 2, and a smoke passage plate.

[0039] Specifically, the smoke hood 1 has a smoke collection chamber 101 and a smoke inlet 1021 connected to the smoke collection chamber 101; the flow guiding assembly 2 is installed in the smoke collection chamber 101 and includes multiple flow guiding plates 201 and a driving mechanism 202. The multiple flow guiding plates 201 are spaced apart in the smoke collection chamber 101 in the left and right direction, and a smoke passage 3 is formed between two adjacent flow guiding plates 201; the driving mechanism 202 is used to drive the multiple flow guiding plates 201 to rotate left and right relative to the smoke hood 1; the smoke inlet 1021 is connected to the smoke collection chamber 101 through the smoke passage 3.

[0040] When a single burner is used alone, a range hood equipped with the airflow guide component 2 can concentrate the airflow on the side of the burner in use. This not only improves the efficiency of removing cooking fumes but also reduces ineffective airflow in such situations. Specifically, as... Figure 6 As shown, taking the case of the left-side burner being used alone as an example, the drive mechanism 202 drives multiple guide plates 202 to rotate to the right, forming a guide channel from left to right in the flue gas passage 4. Then, guided by the guide plates 202, the airflow can be concentrated in the area of ​​the left-side burner. Conversely, as... Figure 5 As shown, when the right burner is working alone, it is only necessary to reverse the drive mechanism 202, causing the multiple guide vanes 202 to deflect to the left as a whole, changing the guiding direction of the flue duct 4 from right to left. This concentrates the airflow in the area where the right burner is located. It can be understood that, as... Figure 4 As shown, if both burners are working simultaneously, simply orient the smoke flow channels 4 on the left and right sides towards their respective burners. It is evident that the range hood equipped with the airflow guide component 2 can reduce ineffective airflow when only one burner is operating.

[0041] It is understandable that the reason why the range hood in this embodiment can collect the fumes generated when the stove is working is because the smoke collection chamber 101 of the smoke collection hood 1 is generally equipped with a fan. With the help of the negative pressure generated by the fan, the fumes can automatically flow through the smoke inlet 1021 and the smoke passage 4 and enter the smoke collection chamber 101. Then, they will be discharged outdoors through the smoke exhaust mechanism of the range hood, such as the smoke exhaust pipe.

[0042] It should be noted that the range hood in this embodiment can automatically identify the working status of the stove burners, and thus automatically control the drive mechanism 202 to flexibly adjust the rotation direction of the guide plate 202 according to the actual situation. Alternatively, the drive mechanism 202 can be manually controlled to flexibly adjust the rotation direction of the guide plate 202 as needed. Specifically, for automatic adjustment, a camera can be installed on the range hood casing to transmit the captured information to the controller. The controller then controls the movement of the drive mechanism 202 based on the camera's information, thereby changing the relative position of the guide plate 202 and the smoke collection hood 1. For manual adjustment, multiple control buttons can be installed on the range hood casing, allowing users to select the appropriate control button according to their needs.

[0043] It is understood that the number of drive mechanisms 202 can be one or more. For example, when there are multiple drive mechanisms 202, multiple guide vanes 201 rotate independently or simultaneously under the drive of multiple drive mechanisms 202.

[0044] In one embodiment, such as Figure 4 , Figure 5 as well as Figure 7 As shown, the drive mechanism 202 includes a drive component 2021, a connecting plate 2022, and a rocker arm 2023. The connecting plate 2022 is rotatably connected to multiple guide plates 201. One end of the rocker arm 2023 is rotatably connected to the connecting plate 2022, and the other end of the rocker arm 2023 is rotatably connected to the drive end of the drive component 2021 and moves left and right under the drive of the drive component 2021. The drive end of the drive component 2021 can swing back and forth relative to the guide plate 201 under the reaction force of the rocker arm 2023. In this embodiment, multiple guide plates 201 are connected into a whole by a connecting plate 2022. This allows the drive component 2021 to drive the connecting plate 2022 through the rocker arm 2023, which in turn drives all the guide plates 201 to rotate left and right synchronously. This ensures the consistency of the rotation angle of each guide plate 201 and avoids the angle deviation that may occur when driving a single one. This ensures that the air volume can be accurately concentrated on one side of the target burner, improving the stability of the smoke exhaust effect. Secondly, this linkage structure simplifies the design of the drive mechanism 202. It eliminates the need to equip each guide plate 201 with a separate drive component, reducing the number of parts. This not only reduces the production and maintenance costs of the equipment but also makes the overall structure more compact and saves installation space.

[0045] Specifically, in this embodiment, multiple guide plates 201 can be rotatably connected to the connecting plate 2022 via a rotating shaft.

[0046] Specifically, in this embodiment, the driving component 2021 may be, but is not limited to, a push rod motor, a telescopic cylinder, a telescopic hydraulic cylinder, and a linear motor.

[0047] Furthermore, such as Figure 3 As shown, the rocker arm 2023 includes a first arm 20231, a second arm 20232, and a third arm 20233, which are sequentially bent into a U-shape. The first arm 20231 is rotatably connected to the connecting plate 2022, and the third arm 20233 is rotatably connected to the driving end of the driving component 2021. It can be understood that the U-shaped design of the rocker arm 2023 serves two purposes: firstly, it provides a stable lever arm structure, allowing the driving force of the driving component 2021 to be transmitted evenly and smoothly to the connecting plate 2022, reducing force loss during transmission and ensuring smooth rotation of the guide plate 201 by the connecting plate 2022, avoiding jamming; secondly, compared to a straight structure, the U-shaped structure allows for a more compact connection between the driving component 2021 and the connecting plate 2022, saving installation space.

[0048] In one embodiment, such as Figures 4 to 7 As shown, the flow guiding assembly 2 also includes a mounting frame 203, which is assembled inside the smoke hood 1. Multiple flow guiding plates 201 are spaced apart on the mounting frame 203 in the left-right direction, and the upper and lower ends of the multiple flow guiding plates 201 are rotatably connected to the mounting frame 203. It can be understood that the mounting frame 203 provides a stable mounting carrier for the multiple flow guiding plates 201. Integrating the multiple flow guiding plates 201 into a single unit before assembling them inside the smoke hood 1 facilitates precise docking between the flow guiding assembly 2 and the smoke hood 1, reducing the overall assembly difficulty. Secondly, rotatably connecting the upper and lower ends of the multiple flow guiding plates 201 to the top plate 2031 and the bottom plate 2032 respectively ensures the balance and flexibility of each flow guiding plate 201 during rotation, reducing potential shaking or jamming from unilateral connections, and making the angle adjustment of the flow guiding plates 201 smoother and more precise.

[0049] Specifically, the deflector plate 201 can be rotatably connected to the mounting frame 203 via the rotating shaft 206.

[0050] In one embodiment, such as Figures 4 to 8As shown, the mounting frame 203 includes a top plate 2031 and a bottom plate 2032 arranged opposite each other in the vertical direction, and a pair of side plates 2033 arranged opposite each other in the horizontal direction. Multiple guide plates 201 are located between the top plate 2031 and the bottom plate 2032, and the upper and lower ends of the multiple guide plates 201 are rotatably connected to the top plate 2031 and the bottom plate 2032 respectively. The driving component 2021 is mounted on the bottom plate 2032. It can be understood that the mounting frame 203 structure formed by the top plate 2031, the bottom plate 2032, and the pair of side plates 2033 is stable and can provide reliable installation space for the guide plates 201. The upper and lower opposite top plate 2031 and the bottom plate 2032 provide symmetrical rotational support points for the upper and lower ends of the guide plates 201, ensuring that the guide plates 201 are subjected to balanced forces during rotation, reducing tilting or jamming, allowing for more precise and smooth angle adjustment, and thus ensuring the stability of airflow guidance.

[0051] Furthermore, since the drive unit 2021 is mounted on the base plate 2032, the connecting plate 2022 can be mounted on the lower end of the multiple guide plates 201. This configuration can shorten the force transmission path and improve drive efficiency.

[0052] Furthermore, the top plate 2031, the bottom plate 2032, and a pair of side plates 2033 are integrally formed.

[0053] In one embodiment, such as Figure 8 As shown, both the top plate 2031 and the bottom plate 2032 are provided with inwardly extending flanges 2034, and the upper and lower ends of the guide plate 201 are rotatably connected to the corresponding flanges 2034. Compared with direct connection to the top plate 2031 and the bottom plate 2032, by setting the flanges 2034, not only can the operating space during assembly be increased and the convenience of operation be improved, but the connection area between the guide plate 201 and the mounting frame 203 can also be increased, making the rotation of the guide plate 201 more stable.

[0054] In one embodiment, such as Figure 1 As shown, the smoke collection hood 1 also includes a smoke inlet plate 102, which is mounted on the front side of the flow guiding assembly 2. The smoke inlet plate 102 has a smoke inlet 1021. In this embodiment, by covering the flow guiding assembly 2 with the smoke inlet plate 102, the flow guiding assembly 2 can be shielded. This not only prevents oil droplets from directly adhering to the surface of the flow guiding assembly 2, ensuring the normal use of components such as the flow guiding plate 201 and the drive structure, but also makes the range hood more aesthetically pleasing.

[0055] In one embodiment, such as Figure 1As shown, there are multiple smoke inlets 1021, which are staggered with the guide plates 201. This staggered arrangement prevents the guide plates 201 from obstructing the smoke inlets 1021 during rotation, ensuring they remain unobstructed. Even if the guide plates 201 adjust their angle to guide the airflow, the path of the fumes will not be affected, allowing them to smoothly pass through the smoke inlets 1021 into the smoke duct 3, thus improving the continuity of exhaust.

[0056] It should be noted that the number of smoke inlets 1021 can be the same as or greater than the number of smoke passages 3. This utility model does not impose any special limitations on this.

[0057] In one embodiment, such as Figures 7 to 9 As shown, the flow guiding assembly 2 also includes a mounting plate 204, which is fixedly connected to the mounting frame 203 and hinged to the fixed end of the drive member 2021, so that the drive end of the drive member 2021 swings back and forth relative to the flow guiding plate 201 under the reaction force of the rocker arm 2023.

[0058] Specifically, such as Figure 9 As shown, the mounting plate 204 includes a first support plate 2041, a second support plate 2042, and a third support plate 2043, which are sequentially bent into a U-shape. The first support plate 2041 is fixedly connected to the lower end of the base plate 2032, and the third support plate 2043 is hinged to the fixed end of the drive component 2021. It can be understood that the first support plate 2041 provides sufficient connection area, allowing the mounting plate 204 to be stably connected to the base plate 2032, thus providing a reliable mounting foundation for the drive component 2021. The second support plate 2042 adapts to the spatial layout of the bottom of the mounting frame 203, avoiding interference with other components and making the overall structure more compact. The third support plate 2043 is hinged to the fixed end of the drive component 2021, allowing the drive component 2021 to have a certain amount of back-and-forth swing margin during operation, ensuring the smooth rotation of the guide plate 201.

[0059] Specifically, in one example, the third support plate 2043 is hinged to the fixed end of the drive member 2021 via a pivot.

[0060] In one embodiment, such as Figure 7 and Figure 8As shown, the flow guiding assembly 2 also includes a pair of connecting arms 205 spaced apart to the left and right. The two ends of each connecting arm 205 are rotatably connected to the connecting plate 2022 and the mounting frame 203, respectively. One end of one connecting arm 205 is coaxially rotatably connected to the rocker arm 2023, the connecting plate 2022, and the driving end of the driving component 2021. It can be understood that the pair of spaced-apart connecting arms 205 connects the connecting plate 2022 to the mounting frame 203, enhancing the stability of the connecting plate 2022 during left and right movements and preventing it from wobbling or shifting due to uneven force, thereby ensuring the accuracy of the rotation angle of the flow guiding plate 201. Furthermore, in this embodiment, the coaxial rotatable connection of one connecting arm 205 to the rocker arm 2023, the connecting plate 2022, and the driving end of the driving component 2021 not only shortens the force transmission path but also simplifies the connection structure and improves transmission efficiency.

[0061] In one embodiment, such as Figures 4 to 8 As shown, along the front-to-back direction of the smoke hood 1, the guide plate 201 has a front sidewall 2011 and a rear sidewall 2012. The upper and lower ends of the front sidewall 2011 are rotatably connected to the mounting frame 203 via rotating shafts 206, and the rear sidewall 2012 is located behind the mounting frame 203. This arrangement makes reasonable use of the internal space of the smoke hood 1, making the overall structure of the smoke extractor more compact.

[0062] It is understood that the rear sidewall 2012 of the guide plate 201 can also be rotatably connected to the mounting frame 203, and the front sidewall 2011 of the guide plate 201 can be assembled between the smoke inlet plate 102 and the mounting frame 203. Alternatively, the middle portion of the front sidewall 2011 and the rear sidewall 2012 of the guide plate 201 can be rotatably connected to the mounting frame 203, with the front sidewall 2011 of the guide plate 201 assembled between the smoke inlet plate 102 and the mounting frame 203, and the rear sidewall 2012 assembled to the rear side of the mounting frame 203. This utility model does not impose any special limitations on these aspects.

[0063] In one embodiment, such as Figures 5 to 8 As shown, the rear sidewall 2012 gradually slopes downwards towards the direction of the front sidewall 2011. Normally, the inner wall of the smoke hood 1, corresponding to the rear sidewall 2012 of the guide plate 201, is also sloped. Therefore, in this embodiment, the rear sidewall 2012 is sloped downwards towards the direction of the front sidewall 2011, which allows the shape of the rear sidewall 2012 of the guide plate 201 to match the shape of its corresponding inner wall of the smoke hood 1. This makes the smoke flow more smoothly through the space between the guide plate 201 and the inner wall of the smoke hood 1, avoiding turbulence caused by shape mismatch, ensuring the guiding speed, and allowing more smoke to be discharged outdoors in a timely manner along a preset path.

[0064] For example, such as Figure 5 and Figure 6 As shown, the guide plate 201 is shaped like an inverted right trapezoid, wherein the right-angled sidewall of the inverted right trapezoid is the front sidewall 2011, and the oblique sidewall of the inverted right trapezoid is the rear sidewall 2012.

[0065] In one embodiment, such as Figures 4 to 8 As shown, along the direction from the middle position of the smoke hood 1 to the left and right ends of the smoke hood 1, the guiding surfaces 2013 of multiple guide plates 201 gradually increase in size, forming a smoke passage 3 between the guiding surfaces 2013 of two adjacent guide plates 201. It can be understood that the guiding surfaces 2013 of the guide plates 201 located in the middle position of the smoke hood 1 are smaller, which can reduce the obstruction of the airflow in the central area and allow some airflow to flow more smoothly to both sides; while as it extends to the left and right ends, the guide plates 201 with gradually increasing guiding surfaces 2013 can form a stronger guiding and converging effect on the airflow, gradually gathering the dispersed airflow and preventing it from diffusing and being lost in the edge area.

[0066] In one embodiment, such as Figures 4 to 8 As shown, when the multiple guide vanes 201 are rotated to be perpendicular to the plane of the smoke inlet 1021, the multiple guide vanes 201 are symmetrically arranged about the middle position in the left-right direction of the smoke collection hood 1. It can be understood that the symmetrical arrangement can, on the one hand, balance the airflow distribution and reduce airflow turbulence; on the other hand, it can reduce the number of parts and lower production and maintenance costs.

[0067] Furthermore, such as Figures 4 to 6 As shown, the height of the tops of the multiple guide plates 201 increases from low to high along the direction from the middle position towards the left and right ends of the smoke hood 1. Similarly, the guide plates 201 closer to the middle position of the smoke hood 1 have lower top heights, which can reduce obstruction of airflow; conversely, the guide plates 201 closer to the ends of the smoke hood 1 have higher top heights, which can concentrate the airflow and prevent the fumes from spreading excessively to the left and right sides.

[0068] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0069] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A range hood, characterized in that, include: The smoke hood (1) has a smoke collection chamber (101) and a smoke inlet (1021) connected to the smoke collection chamber (101); A flow guiding assembly (2) is installed in the smoke collection chamber (101) and includes multiple flow guiding plates (201) and a driving mechanism (202). The multiple flow guiding plates (201) are spaced apart in the smoke collection chamber (101) in the left and right direction, and a smoke passage (3) is formed between two adjacent flow guiding plates (201). The driving mechanism (202) is used to drive the multiple flow guiding plates (201) to rotate left and right relative to the smoke collection hood (1). The smoke inlet (1021) is connected to the smoke collection chamber (101) through the smoke passage (3).

2. The range hood according to claim 1, characterized in that: The driving mechanism (202) includes a driving component (2021), a connecting plate (2022), and a rocker arm (2023). The connecting plate (2022) is rotatably connected to the plurality of guide plates (201). One end of the rocker arm (2023) is rotatably connected to the connecting plate (2022), and the other end of the rocker arm (2023) is rotatably connected to the driving end of the driving component (2021) and moves left and right under the drive of the driving component (2021). The driving end of the driving component (2021) can swing back and forth relative to the guide plate (201) under the reaction force of the rocker arm (2023).

3. The range hood according to claim 2, characterized in that: The rocker arm (2023) includes a first arm (20231), a second arm (20232), and a third arm (20233) that are bent into a U-shape in sequence. The first arm (20231) is rotatably connected to the connecting plate (2022), and the third arm (20233) is rotatably connected to the driving end of the driving member (2021).

4. The range hood according to claim 2, characterized in that: The flow guiding component (2) further includes a mounting frame (203), which is assembled inside the smoke collection hood (1). A plurality of flow guiding plates (201) are spaced apart on the mounting frame (203) in the left-right direction, and the upper and lower ends of the plurality of flow guiding plates (201) are respectively rotatably connected to the mounting frame (203).

5. The range hood according to claim 4, characterized in that: The mounting frame (203) includes a top plate (2031) and a bottom plate (2032) arranged opposite each other in the vertical direction, and a pair of side plates (2033) arranged opposite each other in the horizontal direction. A plurality of guide plates (201) are located between the top plate (2031) and the bottom plate (2032), and the upper and lower ends of the plurality of guide plates (201) are rotatably connected to the top plate (2031) and the bottom plate (2032) respectively. The driving component (2021) is mounted on the bottom plate (2032).

6. The range hood according to claim 4, characterized in that: The flow guiding assembly (2) further includes a mounting plate (204), which is fixedly connected to the mounting frame (203) and hinged to the fixed end of the drive member (2021) so that the drive end of the drive member (2021) swings back and forth relative to the flow guiding plate (201) under the reaction force of the rocker arm (2023).

7. The range hood according to claim 4, characterized in that: The flow guiding assembly (2) further includes a pair of connecting arms (205) spaced apart on the left and right. The two ends of the connecting arms (205) are rotatably connected to the connecting plate (2022) and the mounting frame (203) respectively. One end of one of the connecting arms (205) is coaxially rotatably connected to the rocker arm (2023), the connecting plate (2022) and the driving end of the driving member (2021).

8. The range hood according to claim 4, characterized in that: Along the front-rear direction of the smoke collection hood (1), the guide plate (201) has a front sidewall (2011) and a rear sidewall (2012). The upper and lower ends of the front sidewall (2011) are rotatably connected to the mounting frame (203) through a rotating shaft (206), and the rear sidewall (2012) is located on the rear side of the mounting frame (203).

9. The range hood according to claim 8, characterized in that: The rear sidewall (2012) gradually slopes from top to bottom toward the direction of the front sidewall (2011).

10. The range hood according to claim 1, characterized in that: Along the direction from the middle position of the smoke collection hood (1) to the left and right ends of the smoke collection hood (1), the area of ​​the guide surface (2013) of the multiple guide plates (201) increases from small to large, and the smoke passage (3) is formed between the guide surfaces (2013) of two adjacent guide plates (201).

11. The range hood according to claim 1, characterized in that: When the multiple guide plates (201) are rotated to be perpendicular to the plane where the smoke inlet (1021) is located, the multiple guide plates (201) are symmetrically arranged about the middle position in the left and right directions of the smoke collection hood (1).

12. The range hood according to claim 11, characterized in that: Along the middle position toward the left and right ends of the smoke collection hood (1), the height of the top of the multiple guide plates (201) increases from low to high.

13. The range hood according to any one of claims 1 to 12, characterized in that: The number of the smoke inlets (1021) is multiple, and the smoke inlets (1021) are offset from the guide plate (201).

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