Top-side dual-suction range hood

Abstract

This application relates to a top-and-side dual-suction range hood, comprising: a fan box; a smoke collection box, including a vertical box extending downward from the rear of the fan box and a horizontal box extending forward from the upper part of the vertical box; a side-suction air inlet communicating with the fan box is provided at the lower part of the vertical box; a top-suction air inlet communicating with the fan box is provided at the bottom of the horizontal box; and a flow distribution assembly, including a distribution plate disposed within the smoke collection box and having a converged state and an extended state; when the distribution plate is in the converged state, the distribution plate is positioned between the top-suction air inlet and the side-suction air inlet; when the distribution plate is in the extended state, the distribution plate blocks the top-suction air inlet or the side-suction air inlet to adjust the resistance coefficient corresponding to the top-suction air inlet or the side-suction air inlet.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a top-side dual-suction range hood. Background Technology

[0002] As people's living standards improve, range hoods have gradually become an indispensable appliance in the kitchen. They are typically installed above the stove to extract cooking fumes, thereby purifying the kitchen environment and improving cooking comfort. With the advancement of range hood technology, many top-and-side dual-suction range hoods (7-shaped range hoods) have appeared on the market in recent years. These generally have two air inlets, one at the bottom and one at the top. While the side-suction inlets are mostly located on the vertical casing, the position and size of the top-suction inlets vary, resulting in different focuses in fume extraction: some primarily use top air intake, some primarily use bottom air intake, and some simply use one inlet while the other has no effect.

[0003] In practical use, the unreasonable position and size of the air inlets in top-mounted and side-mounted range hoods result in low efficiency in smoke extraction, allowing smoke to easily escape to other areas of the kitchen and affecting air quality. Furthermore, improper airflow distribution between the top and side air inlets can lead to wasted airflow or insufficient suction, especially when smoke is unevenly distributed during cooking, making the traditional design of top-mounted and side-mounted range hoods ineffective. Utility Model Content

[0004] To address the problem of wasted airflow or insufficient suction power in existing top-side dual-suction range hoods due to unreasonable flow distribution of the top-side dual-suction inlets, this application provides a top-side dual-suction range hood that can improve the overall smoke extraction effect of the range hood by optimizing the flow distribution of the top-side dual-suction inlets.

[0005] This application provides a top-and-side dual-suction range hood, comprising: a fan box; a smoke collection box, including a vertical box extending downward from the rear of the fan box and a horizontal box extending forward from the upper part of the vertical box; a side-suction air inlet communicating with the fan box is opened at the lower part of the vertical box; a top-suction air inlet communicating with the fan box is opened at the bottom of the horizontal box; and a flow distribution component, including a distribution plate disposed within the smoke collection box and having a converged state and an extended state; when the distribution plate is in the converged state, the distribution plate is positioned between the top-suction air inlet and the side-suction air inlet; when the distribution plate is in the extended state, the distribution plate blocks the top-suction air inlet or the side-suction air inlet to adjust the resistance coefficient corresponding to the top-suction air inlet or the side-suction air inlet.

[0006] In one embodiment of this application, the flow distribution component further includes a distribution drive mechanism installed on the smoke collection box, the distribution drive mechanism being driven to connect to the distribution plate to drive the distribution plate to switch between the converged state and the unfolded state.

[0007] In one embodiment of this application, the distribution plate includes a plurality of strip plates that are movably foldable and connected in sequence.

[0008] In one embodiment of this application, each of the strip plates extends in the left-right direction; the plurality of strip plates are folded in the up-down direction, and the plurality of strip plates can be unfolded in the front-back direction.

[0009] In one embodiment of this application, the lowest strip plate of the distribution plate is rotatably disposed at the rear edge of the top suction air inlet and is driven to the distribution drive mechanism; the uppermost strip plate of the distribution plate is driven to the distribution drive mechanism.

[0010] In one embodiment of this application, the distribution drive mechanism includes a rotary driver fixedly connected to the lowest strip plate in the distribution plate and a linear driver mounted on the lowest strip plate in the distribution plate and connected to the highest strip plate in the distribution plate.

[0011] In one embodiment of this application, the vertical housing includes a rectangular frame of equal thickness at the top and bottom, providing the side air intake, and a guide plate extending obliquely upward and backward from the lower edge of the side air intake; the horizontal housing includes a trapezoidal frame extending from the upper part of the rectangular frame along the bottom of the fan housing with gradually decreasing thickness, providing the top air intake.

[0012] In one embodiment of this application, the vertical housing further includes a side suction baffle slidably disposed on the rectangular frame to open or close the side suction air inlet, and a side suction drive mechanism installed within the rectangular frame to drive the side suction baffle.

[0013] In one embodiment of this application, the vertical housing further includes a side-suction grille disposed within the rectangular frame and adjacent to the side-suction air inlet; the side-suction grille is arranged laterally within the rectangular frame and located above the upper edge of the side-suction air inlet.

[0014] In one embodiment of this application, the transverse housing further includes a top suction grille disposed within the trapezoidal frame and adjacent to the top suction air inlet.

[0015] In summary, the top-side dual-suction range hood of this application can adjust the resistance coefficient corresponding to the top-suction air inlet or the side-suction air inlet through a distribution plate with a converged state and an unfolded state, which facilitates further distribution of the friction loss corresponding to the top-suction air inlet or the side-suction air inlet, thereby achieving flow distribution without changing the product's appearance and the position and size of the air inlet.

[0016] Specifically, when it is necessary to increase the flow ratio between the top air intake and the side air intake, that is, to increase the flow at the top air intake and / or decrease the flow at the side air intake, the state of the distribution plate is adjusted to block the side air intake, thereby increasing the resistance coefficient corresponding to the side air intake and thus increasing the friction resistance corresponding to the side air intake, so as to achieve the required flow distribution.

[0017] Similarly, when it is necessary to reduce the flow ratio between the top suction inlet and the side suction inlet, that is, to reduce the flow at the top suction inlet and / or increase the flow at the side suction inlet, the state of the distribution plate is adjusted to block the top suction inlet, thereby increasing the resistance coefficient corresponding to the top suction inlet and increasing the friction resistance corresponding to the top suction inlet to achieve the required flow distribution. Attached Figure Description

[0018] Figure 1 This is a perspective view of a top-side dual-suction range hood according to an embodiment of this application;

[0019] Figure 2 A cross-sectional schematic diagram of a top-side dual-suction range hood according to the above embodiments of this application is shown;

[0020] Figure 3 A schematic diagram of the state of the distribution plate in the top-side dual-suction range hood according to the above embodiment of the present application is shown, wherein neither the top suction air inlet nor the side suction air inlet is blocked;

[0021] Figure 4 A schematic diagram showing the state in which the distribution plate of the top-side double-suction range hood according to the above embodiment of the present application is unfolded to block the side suction air inlet;

[0022] Figure 5 A schematic diagram showing the state in which the distribution plate of the top-side dual-suction range hood according to the above embodiment of the present application is unfolded forward to block the top suction air inlet;

[0023] Figure 6 A schematic diagram of the flow distribution component in the top-side dual-suction range hood according to the above embodiment of this application is shown.

[0024] Explanation of key component symbols:

[0025] 10. Fan box; 11. Fan housing; 12. Fan body; 20. Smoke collection box; 21. Vertical housing; 210. Side suction air inlet; 211. Rectangular frame; 212. Guide plate; 213. Side suction grille; 214. Side suction baffle; 215. Side suction drive mechanism; 22. Horizontal housing; 220. Top suction air inlet; 221. Trapezoidal frame; 222. Top suction grille; 30. Flow distribution assembly; 31. Distribution plate; 310. Strip plate; 32. Distribution drive mechanism; 321. Rotary actuator; 322. Linear actuator.

[0026] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this application. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] 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", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.

[0029] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Considering that the existing top-side dual-suction range hoods have unreasonable air inlet positions and sizes, resulting in low smoke extraction efficiency and easy escape of smoke to other areas of the kitchen, affecting kitchen air quality, this application creatively provides a top-side dual-suction range hood that can improve the overall smoke extraction effect and reduce smoke escape by optimizing the position and / or size of the top-side dual-suction air inlets.

[0034] Specifically, such as Figures 1 to 5 As shown, one embodiment of this application provides a top-side dual-suction range hood, which may include a fan box 10 and a smoke collection box 20 located below and communicating with the fan box 10. It is understood that the range hood of this application may also include, but is not limited to, a control board, a water tank, or a water collection box to assist in completing the smoke extraction function; these will not be elaborated upon here.

[0035] More specifically, such as Figures 1 to 5As shown, the smoke collection box 20 may include a vertical box 21 extending downward from the rear of the fan box 10 and a horizontal box 22 extending forward from the upper part of the vertical box 21. A side-suction air inlet 210 communicating with the fan box 10 is provided at the lower part of the vertical box 21. A top-suction air inlet 220 communicating with the fan box 10 is provided at the bottom of the horizontal box 22. It is understood that the top-side dual-suction range hood of this application is typically installed on a wall, and the fan box 10 and the vertical box 21 are arranged close to the wall.

[0036] In particular, such as Figure 2 As shown, the vertical distance H between the rear edge of the top air intake 220 and the lower edge of the side air intake 210 is between 200mm and 450mm; the lateral distance D between the front edge of the top air intake 220 and the upper edge of the side air intake 210 is between 50mm and 350mm.

[0037] It is worth noting that cooking fumes typically go through three stages: generation, rising, and diffusion. Cooking utensils that generate a lot of fumes, such as woks, are usually less than 150mm high (i.e., the distance between the wok's opening and the stovetop is usually less than 150mm). Therefore, the fume generation area above the stovetop is usually between 150mm and 250mm from the stovetop, the fume rising area is usually between 250mm and 400mm from the stovetop, and the fume diffusion area is usually above 400mm from the stovetop.

[0038] However, when the top-mounted dual-suction range hood of this application is installed on the wall, the height of the rear edge of its top-mounted air inlet 220 from the stove is usually controlled at about 600mm, so that it is in the fume diffusion zone and is mainly responsible for capturing the fume that diffuses upward during cooking. At this time, since the vertical distance between the rear edge of the top-mounted air inlet 220 and the lower edge of the side-mounted air inlet 210 is between 200mm and 450mm, the height of the lower edge of the side-mounted air inlet 210 from the stove is less than 400mm, so that it is below the fume diffusion zone. This makes it easier to pull the fume backward in the fume rising zone and even the fume generating zone, so that the fume path in the fume diffusion zone is further back to rise close to the surface of the vertical housing 21 and then enter the top-mounted air inlet 220, which plays a complementary role.

[0039] Furthermore, although the top-mounted air inlet 220 is positioned high within the fume diffusion zone, the lateral distance between the front edge of the top-mounted air inlet 220 and the upper edge of the side-mounted air inlet 210 is between 50mm and 350mm. Therefore, in the top-mounted dual-suction range hood of this application, the front edge of the top-mounted air inlet 220 is sufficiently far from the wall to ensure a sufficient fume collection area, reduce fume escape, and thus improve the overall fume extraction effect of the range hood.

[0040] Optionally, the thickness of the vertical housing 21 at the upper edge of the side air intake 210 is between 50mm and 100mm, so that the distance between the upper edge of the side air intake 210 and the wall is moderate, so that it will not cause the pot to hit the wall due to being too large, nor will it affect the oil fume extraction effect of the side air intake 210 due to being too small.

[0041] Preferably, the distance between the front edge of the top-mounted air intake 220 and the wall is greater than or equal to 200mm; that is, the lateral distance between the front edge of the top-mounted air intake 220 and the rear wall of the vertical housing 21 is greater than or equal to 200mm, so as to ensure a sufficiently large smoke collection area and further reduce the risk of oil fume escape.

[0042] It is worth noting that when balancing the airflow between the top-mounted air inlet 220 and the side-mounted air inlet 210, adjustments should be made to the height of the air inlets rather than their size. Of course, the adjustment of the air inlet's position and size must meet a minimum requirement: the airflow velocity at the air inlet must be greater than the velocity of the cooking fumes present, to ensure that the air inlet can effectively capture the fumes.

[0043] Preferably, the area ratio between the top-mounted air inlet 220 and the side-mounted air inlet 210 is between 1.2 and 1.5, i.e., 1.2≤S2:S1≤1.5, so as to take into account the flow rate and wind speed ratio of the top-mounted air inlet 220 and the side-mounted air inlet 210, and obtain a better oil fume extraction effect.

[0044] More preferably, the flow rate ratio between the top-mounted air inlet 220 and the side-mounted air inlet 210 is between 1.5 and 2.5, i.e., 1.5 ≤ Q2: Q1 ≤ 2.5. Thus, although the cross-section of the fumes continuously increases during the rising process, the top-and-side dual-suction range hood of this application allows the side-mounted air inlet 210, located at the lower part of the vertical housing 21, to be closer to the stovetop (i.e., closer to the fumes), capturing the fumes in the early stages of their rise. This causes the smaller cross-section of the fumes to be closer to the wall side (i.e., closer to the vertical housing 21), with about one-third of the fumes entering the range hood through the side-mounted air inlet 210, while the remaining fumes rise to the horizontal housing 22 near the wall side. The larger top-mounted air inlet 220 then captures the remaining fumes in the later stages of their rise, achieving a multi-point smoke control effect with both downward and upward suction, resulting in better fume extraction and preventing fumes from escaping.

[0045] Optionally, the top air intake 220 has a wind speed greater than 2 m / s; the side air intake 210 has a wind speed greater than 1.8 m / s, so as to quickly capture oil fumes and obtain better oil fume extraction effect.

[0046] It should be noted that when the airflow Q1 of the top-suction air inlet 220 in the top-side dual-suction range hood of this application increases, whether it is to increase the area S1 of the top-suction air inlet 220, increase the vertical distance L2 between the side-suction air inlet 210 and the fan box 10, or reduce the area S2 of the side-suction air inlet 210 by comprehensively considering the above proportions, it is necessary to ensure that the flow ratio, area ratio and wind speed are within the above ranges in order to obtain a better oil fume extraction effect.

[0047] However, in practical applications, the product's appearance and the position and size of its air inlet are usually not easily altered; furthermore, compared to the side-suction air inlet 210, the vertical distance L1 between the top-suction air inlet 220 and the fan shaft of the fan box 10 is smaller, resulting in a lower drag coefficient. Therefore, as Figures 2 to 6 As shown, the top-side dual-suction range hood of this application may further include a flow distribution component 30, which includes a distribution plate 31 disposed within the smoke collection box 20 and having a converged state and an unfolded state. When the distribution plate 31 is in the unfolded state, the distribution plate 31 blocks the top suction air inlet 220 or the side suction air inlet 210 to adjust the resistance coefficient corresponding to the top suction air inlet 220 or the side suction air inlet 210. When the distribution plate 31 is in the converged state, the distribution plate 31 is positioned between the top suction air inlet 220 and the side suction air inlet 210, thereby releasing the obstruction of the top suction air inlet 220 and the side suction air inlet 210.

[0048] In this way, the top-side dual-suction range hood of this application can adjust the resistance coefficient corresponding to the top suction inlet 220 or the side suction inlet 210 through the distribution plate 31 which has a converged state and an unfolded state, so as to further distribute the friction loss corresponding to the top suction inlet 220 or the side suction inlet 210, thereby achieving flow distribution without changing the product's appearance and the position and size of the air inlet.

[0049] In other words, such as Figure 4 As shown, when it is necessary to increase the flow ratio between the top air intake 220 and the side air intake 210, that is, to increase the flow at the top air intake 220 and / or decrease the flow at the side air intake 210, the state of the distribution plate 31 is adjusted to block the side air intake 210, thereby increasing the resistance coefficient corresponding to the side air intake 210, and thus increasing the friction resistance corresponding to the side air intake 210, so as to achieve the required flow distribution.

[0050] Similarly, such as Figure 5As shown, when it is necessary to reduce the flow ratio between the top air intake 220 and the side air intake 210, that is, to reduce the flow at the top air intake 220 and / or increase the flow at the side air intake 210, the state of the distribution plate 31 is adjusted to block the top air intake 220, thereby increasing the resistance coefficient corresponding to the top air intake 220, and thus increasing the friction resistance corresponding to the top air intake 220, so as to achieve the required flow distribution.

[0051] It is worth noting that, such as Figure 6 As shown, the flow distribution assembly 30 may further include a distribution drive mechanism 32 installed in the smoke collection box 20; the distribution drive mechanism 32 is driven to connect to the distribution plate 31 to drive the distribution plate 31 to switch between the converged state and the expanded state, so as to adjust the degree of obstruction of the top suction inlet 220 or the side suction inlet 210 as needed. It is understood that the obstruction mentioned in this application can be partial obstruction or complete obstruction, as long as the drag coefficient corresponding to the top suction inlet 220 or the side suction inlet 210 can be adjusted.

[0052] For example, such as Figure 6 As shown, the distribution plate 31 may include a plurality of foldable and sequentially connected strip plates 310, so as to achieve the state switching of the distribution plate 31 by folding or unfolding the strip plates 310. It is understood that in other examples of this application, the distribution plate 31 may also be implemented as a telescopic plate, so as to achieve the state switching of the distribution plate 31 by telescoping.

[0053] Optionally, such as Figures 3 to 6 As shown, each strip plate 310 extends in the left-right direction; multiple strip plates 310 are folded in the up-down direction, and multiple strip plates 310 can be unfolded in the front-back direction. Preferably, the lowest strip plate 310 of the distribution plate 31 is rotatably disposed at the rear edge of the top suction air inlet 220 and is driven to the distribution drive mechanism 32, and the uppermost strip plate 310 of the distribution plate 31 is driven to the distribution drive mechanism 32, so that the strip plates 310 can be unfolded or folded to each other under the drive of the distribution drive mechanism 32, thereby realizing the state switching of the distribution plate 31.

[0054] Thus, as Figure 5 As shown, when the distribution drive mechanism 32 drives the uppermost strip plate 310 to move forward, the middle strip plate 310 is driven to unfold and block the top suction inlet 220, which increases the resistance coefficient of the top suction inlet 220, thereby increasing the friction resistance of the top suction inlet 220 and achieving the required flow distribution.

[0055] like Figure 4As shown, when the distribution drive mechanism 32 drives the uppermost strip plate 310 to move backward, the middle strip plate 310 is driven to unfold and block the side air intake 210, which increases the resistance coefficient of the side air intake 210, thereby increasing the friction resistance of the side air intake 210 and achieving the required flow distribution.

[0056] In addition, such as Figure 3 As shown, when the distribution drive mechanism 32 drives the uppermost strip plate 310 to be stacked on top of the lowermost strip plate 310, the middle strip plate 310 is driven to be stacked between the uppermost and lowermost strip plates 310, so that the distribution plate 31 is in a gathered state, which will not block the top air intake 220 or the side air intake 210, ensuring that the friction loss of the side air intake 210 and the top air intake 220 is small.

[0057] Optionally, such as Figure 6 As shown, the distribution drive mechanism 32 may include a rotary driver 321 fixedly connected to the lowest strip plate 310 of the distribution plate 31, and a linear driver 322 mounted on the lowest strip plate 310 of the distribution plate 31 and connected to the highest strip plate 310 of the distribution plate 31. Thus, as... Figure 5 and Figure 6 As shown, when it is necessary to block the top air intake 220 to increase the friction resistance corresponding to the top air intake 220, the rotary driver 321 first drives the bottom strip plate 310 of the distribution plate 31 to flip forward, so as to drive the other strip plates 310 and the linear driver 322 to flip forward. Then, the linear driver 322 drives the top strip plate 310 of the distribution plate 31 to move forward, so that the middle strip plate 310 is driven to unfold forward and block the top air intake 220.

[0058] Similarly, such as Figure 4 and Figure 6 As shown, when it is necessary to block the side air intake 210 to increase the friction resistance corresponding to the side air intake 210, the rotary driver 321 first drives the bottom strip plate 310 of the distribution plate 31 to flip backward, so as to drive the other strip plates 310 and the linear driver 322 to flip backward. Then, the linear driver 322 drives the top strip plate 310 of the distribution plate 31 to move backward, so that the middle strip plate 310 is driven to unfold backward and block the side air intake 210.

[0059] It is understood that the rotary driver 321 mentioned in this application may be, but is not limited to, a reduction geared rotary motor installed in the smoke collection box 20 and whose output shaft is fixedly connected to the strip plate 310 located at the bottom layer of the distribution plate 31, as long as it can drive the distribution plate 31 to drive the linear driver 322 to rotate back and forth; the linear driver 322 mentioned in this application may be, but is not limited to, an electric push rod with both ends hinged to the strip plate 310 located at the top and bottom layers of the distribution plate 31, as long as it can drive the strip plates 310 in the distribution plate 31 to unfold or fold with each other, and this application will not elaborate further on this.

[0060] It is worth noting that the top-side dual-suction range hood of this application may also include a sensor assembly (not shown in the figure) communicatively connected to the distribution drive mechanism 32. This sensor assembly includes a top-suction fume sensor located at the top-suction air inlet 220 and a side-suction fume sensor located at the side-suction air inlet 210. The top-suction fume sensor is used to detect the fume flow rate at the top-suction air inlet 220; the side-suction fume sensor is used to detect the fume flow rate at the side-suction air inlet 210. When the ratio of fume detected by the top-suction fume sensor and the side-suction fume sensor exceeds a set flow ratio threshold, the distribution drive mechanism 32 is triggered to drive the distribution plate 31 to switch states, ensuring that the flow ratio between the top-suction air inlet 220 and the side-suction air inlet 210 is within the set flow ratio threshold.

[0061] In addition, for scenarios with relatively small amounts of oil fumes, such as steaming and cooking, the distribution plate 31 of this application can completely cover the top air intake 220 so that the fan flow can be fully distributed to the side air intake 210, thus meeting the oil fume extraction needs of small oil fume scenarios.

[0062] According to the above embodiments of this application, as Figures 2 to 5 As shown, the fan box 10 may include a fan box body 11 fixedly connected to the smoke collection box 20 and a fan body 12 disposed within the fan box body 11; the fan body 12 is located at the front of the fan box body 11 so as to form an air inlet channel corresponding to the vertical box body 21 at the rear of the fan box body 11.

[0063] Optionally, such as Figures 1 to 5 As shown, the vertical housing 21 includes a rectangular frame 211 of equal thickness at the top and bottom, providing the side air intake 210, and a guide plate 212 extending obliquely upward and backward from the lower edge of the side air intake 210, so that the oil fumes captured by the side air intake 210 are smoothly turned to flow into the air intake channel of the fan housing 10, which helps to reduce the oil fume resistance.

[0064] Optionally, such as Figures 1 to 5As shown, the transverse housing 22 includes a trapezoidal frame 221 that extends from the upper part of the rectangular frame 211 along the bottom of the fan housing 10 with a gradually decreasing thickness and provides the top suction inlet 220, such that the top suction inlet 220 is arranged at an angle toward the rear of the fan housing 11, which facilitates the smooth flow of oil fumes captured by the top suction inlet 220 to the air intake channel of the fan housing 10 and reduces oil fume resistance.

[0065] In addition, such as Figures 1 to 5 As shown, the vertical housing 21 may also include a side-suction grille 213 disposed within the rectangular frame 211 and adjacent to the side-suction air inlet 210 to ensure uniform airflow at the side-suction air inlet 210. Similarly, the horizontal housing 22 may also include a top-suction grille 222 disposed within the trapezoidal frame 221 and adjacent to the top-suction air inlet 220, which can also ensure uniform airflow at the top-suction air inlet 220.

[0066] Optionally, such as Figure 2 and Figure 3 As shown, the side suction grille 213 is arranged horizontally within the rectangular frame 211 and is located above the upper edge of the side suction air inlet 210, so as to ensure that the side suction grille 213 is hidden within the rectangular frame 211, preventing the user from seeing the side suction grille 213 from the side suction air inlet 210, which helps to ensure the overall aesthetics of the top-side dual-suction range hood.

[0067] Optionally, such as Figures 1 to 5 As shown, the vertical housing 21 also includes a side suction baffle 214 slidably disposed on the rectangular frame 211 to open or close the side suction inlet 210, and a side suction drive mechanism 215 installed inside the rectangular frame 211 to drive the side suction baffle 214. When the side suction baffle 214 slides upward under the drive of the side suction drive mechanism 215 to open the side suction inlet 210, the side suction baffle 214 extends vertically to overlap the front wall of the rectangular frame 211, preventing the oil fumes from rising upward along the front wall of the rectangular frame 211; when the side suction baffle 214 slides downward under the drive of the side suction drive mechanism 215 to close the side suction inlet 210, the side suction baffle 214 still extends vertically, so that the outer surface of the side suction baffle 214 is flush with the front surface of the rectangular frame 211. It is understandable that when the side suction baffle 214 closes the side suction air inlet 210, the top suction air inlet 220 can still capture oil fumes to meet the high oil fume suction and exhaust requirements.

[0068] It is worth noting that the side suction drive mechanism 215 mentioned in this application may be, but is not limited to, composed of a push rod motor and a connecting rod. Of course, in other examples of this application, the side suction drive mechanism 215 mentioned in this application may also be, but is not limited to, composed of a rotary motor and a crank, as long as it can drive the side suction baffle 214 to slide up and down to open or close the side suction air inlet 210. This application will not elaborate further on this.

[0069] According to the above embodiments of this application, the top-side dual-suction range hood of this application may further include an oil cup (not shown in the figure) detachably disposed at the bottom of the vertical housing 21 and communicating with the vertical housing 21, for receiving oil stains flowing down from the vertical housing 21. It is understood that the bottom of the vertical housing 21 is provided with an oil leakage hole communicating with the oil cup, which will not be described in detail in this application.

[0070] Furthermore, the top-side dual-suction range hood of this application can also be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the top-side dual-suction range hood to perform corresponding operations, thereby realizing intelligent control of the top-side dual-suction range hood and improving the user experience.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A top-side dual-suction extractor hood, characterized in that include: Fan box; The smoke collection box includes a vertical box extending downward from the rear of the fan box and a horizontal box extending forward from the upper part of the vertical box; the lower part of the vertical box has a side-suction air inlet communicating with the fan box; the bottom of the horizontal box has a top-suction air inlet communicating with the fan box; and The flow distribution component includes a distribution plate disposed within the smoke collection box and having a converged state and an extended state; when the distribution plate is in the converged state, the distribution plate is positioned between the top suction inlet and the side suction inlet; when the distribution plate is in the extended state, the distribution plate blocks the top suction inlet or the side suction inlet to adjust the drag coefficient corresponding to the top suction inlet or the side suction inlet.

2. The top side double suction cooking fume extractor as claimed in claim 1 wherein, The flow distribution component also includes a distribution drive mechanism installed in the smoke collection box. The distribution drive mechanism is driven to connect to the distribution plate to drive the distribution plate to switch between the converged state and the unfolded state.

3. The top side double suction exhaust hood as claimed in claim 2 wherein, The distribution plate includes a plurality of strip plates that can be folded movably and connected in sequence.

4. The top side double suction exhaust hood as claimed in claim 3 wherein, Each of the strip plates extends in the left-right direction; multiple strip plates are folded in the up-down direction, and multiple strip plates can be unfolded in the front-back direction.

5. The top side double suction exhaust hood as claimed in claim 4 wherein, The bottommost strip of the distribution plate is rotatably disposed at the rear edge of the top suction air inlet and is driven to the distribution drive mechanism; the topmost strip of the distribution plate is driven to the distribution drive mechanism.

6. The top side double suction exhaust hood as claimed in claim 5 wherein, The distribution drive mechanism includes a rotary driver fixedly connected to the bottommost strip plate of the distribution plate and a linear driver installed on the bottommost strip plate of the distribution plate and connected to the topmost strip plate of the distribution plate.

7. The top side suction range hood according to any one of claims 1 to 6, characterized in that The vertical housing includes a rectangular frame of equal thickness at the top and bottom, providing the side air intake, and a guide plate extending obliquely upward and backward from the lower edge of the side air intake; the horizontal housing includes a trapezoidal frame extending from the upper part of the rectangular frame along the bottom of the fan housing with gradually decreasing thickness, providing the top air intake.

8. The top side double suction exhaust hood as claimed in claim 7 wherein, The vertical housing also includes a side suction baffle that is slidably disposed on the rectangular frame to open or close the side suction air inlet, and a side suction drive mechanism installed inside the rectangular frame to drive the side suction baffle.

9. The top side double suction exhaust hood as claimed in claim 7 wherein, The vertical housing also includes a side-suction grille disposed within the rectangular frame and adjacent to the side-suction air inlet; the side-suction grille is arranged laterally within the rectangular frame and located above the upper edge of the side-suction air inlet.

10. The top side double suction exhaust hood as claimed in claim 7 wherein, The horizontal housing also includes a top suction grille disposed within the trapezoidal frame and adjacent to the top suction air inlet.

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