Range hood and control method thereof

Abstract

The invention discloses a range hood and a control method thereof. The range hood comprises a control module, an image acquisition module, a smoke suction cavity and a smoke guide assembly, the smoke suction cavity penetrates through the cooking bench through the first opening; smoke inlet windows are formed in the smoke suction cavity and are in one-to-one correspondence with the cooking utensils; the image acquisition module is fixed on the smoke suction cavity and is arranged towards the area where the kitchen range is located; the smoke guiding assemblies are located in the smoke suction cavity and correspond to the smoke inlet windows in a one-to-one mode. The smoke guide assembly comprises a baffle and a baffle driving mechanism, and the area of the baffle is larger than that of the smoke inlet window; the control module is used for acquiring first image information of an area where the kitchen range is located through the image acquisition module and controlling the baffle driving mechanism to drive the baffle to move in the first direction according to the first image information so as to adjust the relative position of the baffle and the smoke inlet window; the first direction is a direction perpendicular to the table top of the cooking bench. The scheme can improve the oil smoke suction effect, reduce power consumption and improve the oil smoke suction efficiency.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a range hood and its control method. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance, available in various forms, such as top-mounted, side-mounted, and island-style range hoods. Most current island-style range hoods use a single, fixed smoke inlet (fixed area), resulting in poor smoke extraction. This is because using a single smoke inlet for multiple cooktops leads to excessive concentration of negative pressure in a single channel, resulting in localized over-functionality. Furthermore, the fixed smoke inlet is poorly adaptable to different smoke distributions, leading to wasted or redundant negative pressure distributions in various smoke scenarios, further affecting smoke extraction efficiency. Summary of the Invention

[0003] This invention provides a range hood and its control method to improve the smoke extraction effect, reduce power consumption, and increase smoke extraction efficiency.

[0004] According to one aspect of the present invention, a range hood is provided, comprising: a control module, an image acquisition module, a smoke extraction chamber, and a smoke guiding assembly; The stove platform where the stove is located has a first opening, and the smoke extraction chamber passes through the first opening and through the stove platform; the smoke extraction chamber is provided with a smoke inlet window, which is located above the stove platform and is provided in a one-to-one correspondence with the stove. The image acquisition module is fixed to the smoke extraction chamber and is positioned facing the area where the stove is located; The smoke guiding assembly is located inside the smoking chamber and is set one-to-one with the smoke inlet window; the smoke guiding assembly includes a baffle and a baffle driving mechanism, and the area of ​​the baffle is larger than the area of ​​the smoke inlet window; Both the image acquisition module and the baffle drive mechanism are electrically connected to the control module. The control module is used to acquire the first image information of the area where the stove is located through the image acquisition module, and control the baffle drive mechanism to drive the baffle to move along the first direction according to the first image information, so as to adjust the relative position of the baffle and the smoke inlet window. The first direction is the direction perpendicular to the surface of the stove.

[0005] Optionally, the smoke inlet window includes at least a first smoke inlet window and a second smoke inlet window, and the baffle includes at least a first baffle and a second baffle; The inner wall of the smoking chamber includes a first inner wall, a second inner wall and a third inner wall. The smoke inlet window is disposed on the third inner wall. The first inner wall and the second inner wall are located on opposite sides of the third inner wall. A fixing plate is also disposed on the third inner wall. The first inner wall and the fixing plate are located on opposite sides of the first smoke inlet window, and the second inner wall and the fixing plate are located on opposite sides of the second smoke inlet window. The range hood also includes a first slide rail, a second slide rail, a third slide rail, and a fourth slide rail extending along a first direction. The first slide rail is fixed to the first inner wall, the second slide rail is fixed to the first side of the fixed plate, the third slide rail is fixed to the second side of the fixed plate, and the fourth slide rail is fixed to the second inner wall. The first side and the second side are located on opposite sides of the fixed plate. The first baffle moves along the first direction via the first and second slide rails, and the second baffle moves along the first direction via the third and fourth slide rails.

[0006] Optionally, the first slide rail includes a first fixed rail and a first movable rail, the first movable rail being slidably disposed relative to the first fixed rail, and the first fixed rail being fixed to the first inner wall; The second slide rail includes a second fixed rail and a second movable rail. The second movable rail is slidably disposed relative to the second fixed rail, and the second fixed rail is fixed to the first side of the fixed plate. The third slide rail includes a third fixed rail and a third moving rail. The third moving rail is slidably arranged relative to the third fixed rail, and the third fixed rail is fixed to the second side of the fixed plate. The fourth slide rail includes a fourth fixed rail and a fourth moving rail. The fourth moving rail is slidably arranged relative to the fourth fixed rail, and the fourth fixed rail is fixed to the second inner wall. The first baffle includes a first baffle portion, a second baffle portion, and a third baffle portion. The first baffle portion and the second baffle portion are located on opposite sides of the third baffle portion, and both are located on the side of the third baffle portion away from the first smoke inlet window. The planes on which the first baffle portion and the second baffle portion are located are perpendicular to the plane on which the third baffle portion is located. The first baffle portion is fixed on the first moving rail, and the second baffle portion is fixed on the second moving rail. The second baffle includes a fourth baffle portion, a fifth baffle portion, and a sixth baffle portion. The fourth baffle portion and the fifth baffle portion are located on opposite sides of the sixth baffle portion, and both are located on the side of the sixth baffle portion away from the second smoke inlet window. The planes on which the fourth baffle portion and the fifth baffle portion are located are perpendicular to the plane on which the sixth baffle portion is located. The fourth baffle portion is fixed on the third moving rail, and the fifth baffle portion is fixed on the fourth moving rail.

[0007] Optionally, the range hood also includes a fan housing for housing the fan; The fan casing is located below the stove and is connected to the smoke extraction chamber.

[0008] Optionally, the baffle drive mechanism includes a drive motor and a push rod; The fan housing includes a first top plate, a drive motor is fixed to the first top plate, and a push rod is connected to the side of the baffle facing the first top plate.

[0009] Optionally, the smoking chamber includes a second top plate, and along the first direction, the distance between the second top plate and the smoke inlet window is greater than 1 / 2 of the height of the baffle.

[0010] According to another aspect of the present invention, a control method for a range hood is provided, which is executed using a range hood provided in any embodiment of the present invention. The control method includes: The first image information of the area where the stove is located is obtained through the image acquisition module; The control baffle driving mechanism is based on the first image information to drive the baffle to move along the first direction, so as to adjust the relative position of the baffle and the smoke inlet window; The first direction is the direction perpendicular to the surface of the stove.

[0011] Optionally, before acquiring the first image information of the area where the stove is located through the image acquisition module, the control method further includes: Receive the stove start signal; In response to the start signal of the stove, the baffle driving mechanism is controlled to drive the baffle to move along the first direction so that the baffle and the smoke inlet window have a preset overlap area; the preset overlap area is less than the total area of ​​the smoke inlet window.

[0012] Optionally, the first direction includes a first sub-direction and a second sub-direction, wherein the first sub-direction and the second sub-direction are opposite directions; Based on the first image information, the control baffle driving mechanism drives the baffle to move along a first direction to adjust the relative position of the baffle and the smoke inlet window, including: Determine the concentration of cooking fumes based on the information from the first image; When the oil fume concentration is greater than the first concentration threshold, the control baffle driving mechanism drives the baffle to move along the first sub-direction so that the baffle and the smoke inlet window have a second overlapping area, which is smaller than the preset overlapping area. When the oil fume concentration is less than the second concentration threshold, the control baffle driving mechanism drives the baffle to move along the second sub-direction so that the baffle and the smoke inlet window have a third overlapping area, which is greater than the preset overlapping area. The first concentration threshold is greater than the second concentration threshold.

[0013] Optionally, the smoking chamber includes a second top plate, and along the first direction, the distance between the second top plate and the smoke inlet window is greater than 1 / 2 of the height of the baffle. The control baffle drive mechanism drives the baffle to move along a first direction so that the baffle and the smoke inlet window have a preset overlap area, including: The second image information of the area where the stove is located is obtained through the image acquisition module; Determine the height of the kitchen utensils on the stove based on the information from the second image; When the height of the kitchenware is greater than or equal to the first height threshold, the baffle driving mechanism is controlled to drive the baffle to move from the initial position away from the second top plate until the baffle and the smoke inlet window have a preset overlapping area, exposing the first target area of ​​the smoke inlet window; When the height of the kitchenware is less than the first height threshold, the baffle driving mechanism is controlled to drive the baffle to move from the initial position toward the direction closer to the second top plate until the baffle and the smoke inlet window have a preset overlapping area, exposing the second target area of ​​the smoke inlet window; The first target area is located on the side of the second target area away from the stove.

[0014] The technical solution of this invention involves setting an image acquisition module and a smoke inlet window corresponding to each cooktop on the smoke extraction chamber, and setting a smoke guiding component corresponding to each smoke inlet window within the smoke extraction chamber. This smoke guiding component includes a baffle and a baffle driving mechanism. During the start-up phase of the range hood, the control module acquires first image information of the area where the cooktop is located through the image acquisition module, and controls the baffle driving mechanism to move the baffle along a first direction based on the first image information. This adjusts the relative position of the baffle and the smoke inlet window, thereby adjusting the actual opening area and actual opening size of the smoke inlet window. Compared to a fixed smoke inlet design, this avoids negative pressure waste or excess, improving the smoke extraction effect. Furthermore, the design of one-to-one correspondence between the smoke inlet window and the cooktop in this invention avoids functional overload compared to multiple cooktops simultaneously corresponding to one smoke inlet, reducing power consumption and improving smoke extraction efficiency.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a range hood provided in an embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of a range hood provided in an embodiment of the present invention; Figure 3 This is a cross-sectional structural diagram of another range hood provided in an embodiment of the present invention; Figure 4 This is an exploded view of a range hood provided in an embodiment of the present invention; Figure 5 This is a cross-sectional structural diagram of another range hood provided in an embodiment of the present invention; Figure 6 This is a flowchart illustrating a control method for a range hood provided in an embodiment of the present invention; Figure 7 This is a flowchart illustrating another control method for a range hood provided in an embodiment of the present invention; Figure 8 This is a flowchart illustrating another control method for a range hood provided in an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0020] First, it should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, an element or object preceding the word covers the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similarly, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. Furthermore, the shapes and sizes of the components in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this invention.

[0021] Example 1 This embodiment provides a range hood. For example... Figures 1-4 As shown, the range hood includes a control module, an image acquisition module 10, a smoke extraction chamber 20, and a smoke guiding assembly. The stovetop 300, where the cooktop 200 is located, has a first opening 3001, through which the smoke extraction chamber 20 passes. The smoke extraction chamber 20 has a smoke inlet window 201 located above the cooktop 300 and corresponding to each cooktop 200. The image acquisition module 10 is fixed to the smoke extraction chamber 20 and faces the area where the cooktop 200 is located. The smoke guiding assembly is located inside the smoke extraction chamber 20 and corresponds to the smoke inlet window 201. 1. One-to-one correspondence setting; the smoke guiding component includes a baffle 31 and a baffle driving mechanism 32, the area of ​​the baffle 31 is larger than the area of ​​the smoke inlet window 201; the image acquisition module 10 and the baffle driving mechanism 32 are both electrically connected to the control module; the control module is used to acquire the first image information of the area where the stove 200 is located through the image acquisition module 10, and control the baffle driving mechanism 32 to drive the baffle 31 to move along the first direction Z according to the first image information, so as to adjust the relative position of the baffle 31 and the smoke inlet window 201; the first direction Z is the direction perpendicular to the table surface 3002 of the stove 300.

[0022] Specifically, the range hood provided in this embodiment of the invention is an island-style range hood. For example... Figure 1 and Figure 4 As shown, in this embodiment, the cooktop 200 and the range hood are designed separately. The cooktop 200 is embedded in the countertop 3002 of the cooktop 300. Mark 2001 indicates the outer casing of the cooktop 200. For example, the cooktop 200 can be, but is not limited to, an induction cooktop and a gas cooktop. The smoke extraction chamber 20 of the range hood is inserted into the cooktop 300 through a first opening 3001. The portion of the smoke extraction chamber 20 located above the cooktop 300 is a smoke-gathering chamber 20a, used for collecting smoke. The portion of the smoke extraction chamber 20 located below the cooktop 300 is a duct chamber 20b, for the flow of cooking fumes. Smoke inlet windows 201 are specifically located on the smoke-gathering chamber 20a and correspond one-to-one with the cooktop 200. A fan is located below the duct chamber 20b. Figure 1 The mark 50 indicates the fan casing. Figure 2 The marking 503 indicates the fan volute. Under the action of the fan, it can draw in oil fumes and discharge them from the fan outlet 502 after passing through the air duct cavity 20b.

[0023] Furthermore, referring to Figure 1 and Figure 4In addition, the smoke extraction chamber 20 is equipped with a baffle 31 and a baffle driving mechanism 32 (collectively referred to as the smoke guiding assembly) corresponding to the smoke inlet window 201. The area of ​​the baffle 31 is larger than the area of ​​the smoke inlet window 201. Thus, when the range hood is turned off, the baffle 31 can completely block the smoke inlet window 201. When the range hood is turned on, the baffle driving mechanism 32 can drive the baffle 31 to move along the first direction Z under the control of the control module. In this way, the relative position of the baffle 31 and the smoke inlet window 201 can be adjusted, thereby adjusting the actual opening area and the actual opening region of the smoke inlet window 201.

[0024] Specifically, the relative positions of the baffle 31 and the smoke inlet window 201 are reflected in their overlapping areas and overlapping sizes. When the baffle 31 and the smoke inlet window 201 have different overlapping areas, the actual opening area of ​​the smoke inlet window 201 is different; similarly, when the baffle 31 and the smoke inlet window 201 have different overlapping areas, the actual opening area of ​​the smoke inlet window 201 is different. For example, Figure 1 and Figure 4 The illustration is based on the example where the left baffle (31a) completely covers the left smoke inlet window (201a), and the right baffle (31b) overlaps with the lower area of ​​the right smoke inlet window (201b), exposing the upper area of ​​the right smoke inlet window (201b), and the fumes enter the smoke extraction chamber 20 through this area.

[0025] Furthermore, referring to Figure 1 In this embodiment, an image acquisition module 10 is also provided on the smoke chamber 20 corresponding to the area where the stove is located. The specific driving mechanism of the control module for the baffle driving mechanism 32 is as follows: the image acquisition module 10 acquires the first image information of the area where the stove 200 is located, and controls the baffle driving mechanism 32 to drive the baffle 31 to move along the first direction Z according to the first image information, so as to adjust the relative position of the baffle 31 and the smoke inlet window 201.

[0026] Specifically, the first image information refers to the image information collected during the start-up of the range hood. Based on the first image information, the current smoke extraction requirement can be determined. Then, by controlling the baffle drive mechanism 32, the baffle 31 is driven to move along the first direction Z, adjusting the relative position of the baffle 31 and the smoke inlet window 201. This allows for adjustment of the actual opening area and size of the smoke inlet window to meet the smoke extraction requirements. Compared to a fixed smoke inlet design, the actual opening area and size of the smoke inlet window can be adjusted according to the smoke conditions, avoiding negative pressure waste or excess, and improving the smoke extraction effect. In addition, since the smoke inlet window 201 and the stove 200 are set one-to-one in this embodiment, the relative position relationship between the corresponding baffle 31 and the smoke inlet window 201 can be adjusted individually for each stove. Compared to multiple stoves corresponding to one smoke inlet, this avoids functional redundancy, reduces power consumption, and improves smoke extraction efficiency.

[0027] Reference Figure 1 In this embodiment, the first direction Z refers to the direction perpendicular to the countertop 3002 of the stove 300. Specifically, it refers to the direction perpendicular to the countertop 3002 upward or downward. The specific direction of movement of the baffle needs to be determined according to the actual situation, which will be explained in detail later.

[0028] Specifically, the control module may include a control circuit board and circuit components integrated on the control circuit board. (See reference...) Figure 1 The smoking chamber 20 includes a second top plate 202. Exemplarily, a control module may be located below the second top plate 202. Alternatively, a control panel for human-machine interaction may be provided on the second top plate 202.

[0029] Reference Figure 1 , Figure 1 Taking the smoke extraction chamber 20 with two smoke inlet windows 201 as an example, the image acquisition module 10 can be set between the two smoke inlet windows 201 to simultaneously acquire the first image information of the two stove areas, thereby reducing the number of image acquisition modules 10 and lowering costs.

[0030] In summary, the range hood provided in this embodiment of the invention, by setting an image acquisition module and a smoke inlet window corresponding to each cooktop on the smoke extraction chamber, and setting a smoke guiding component corresponding to each smoke inlet window in the smoke extraction chamber, the smoke guiding component includes a baffle and a baffle driving mechanism. During the start-up phase of the range hood, the control module acquires the first image information of the area where the cooktop is located through the image acquisition module, and controls the baffle driving mechanism to drive the baffle to move along a first direction according to the first image information, so as to adjust the relative position of the baffle and the smoke inlet window. This allows for the adjustment of the actual opening area and the actual opening size of the smoke inlet window. Compared with the design scheme of fixed smoke inlet, this can avoid the waste or excess of negative pressure and improve the smoke extraction effect. In addition, the design of setting the smoke inlet window to each cooktop in this embodiment of the invention, compared with multiple cooktops corresponding to one smoke inlet at the same time, can avoid the situation of functional redundancy, reduce power consumption, and improve smoke extraction efficiency.

[0031] like Figures 1-4 As shown, optionally, the smoke inlet window 201 includes at least a first smoke inlet window 201a and a second smoke inlet window 201b, and the baffle 31 includes at least a first baffle 31a and a second baffle 31b; the inner wall of the smoking chamber 20 includes a first inner wall 21 (e.g., ...). Figure 4 The inner wall on the left side), the second inner wall 22 (as shown) Figure 4 The right inner wall) and the third inner wall 23 (as shown) Figure 4 The smoke inlet window 201 is located on the third inner wall 23 (the inner wall of the middle front side). The first inner wall 21 and the second inner wall 22 are located on opposite sides of the third inner wall 23. A fixing plate 231 is also provided on the third inner wall 23. The first inner wall 21 and the fixing plate 231 are located on opposite sides of the first smoke inlet window 201a, and the second inner wall 22 and the fixing plate 231 are located on opposite sides of the second smoke inlet window 201b. The range hood also includes a first slide rail 41, a second slide rail 42, and a third slide rail extending along the first direction Z. 43 and the fourth slide rail 44, the first slide rail 41 is fixed to the first inner wall 21, the second slide rail 42 is fixed to the first side of the fixing plate 231, the third slide rail 43 is fixed to the second side of the fixing plate 231, and the fourth slide rail 44 is fixed to the second inner wall 22; the first side and the second side are located on opposite sides of the fixing plate 231; the first baffle 31a moves along the first direction Z through the first slide rail 41 and the second slide rail 42, and the second baffle 31b moves along the first direction Z through the third slide rail 43 and the fourth slide rail 44.

[0032] Specifically, each baffle 31 is provided with slide rails on both sides. In other words, one baffle 31 corresponds to a pair of slide rails, so that the baffle 31 can move along the first direction Z through the corresponding slide rails.

[0033] For example, Figures 1-4Taking a range hood with two smoke inlet windows 201 as an example, four slide rails need to be set accordingly, namely the first slide rail 41, the second slide rail 42, the third slide rail 43 and the fourth slide rail 44. The first slide rail 41 and the second slide rail 42 correspond to the first baffle 31a, and the third slide rail 43 and the fourth slide rail 44 correspond to the second baffle 31b.

[0034] In this embodiment, by setting the slide rail, the slide rail can provide a track for the movement of the baffle, limit the movement area of ​​the baffle 31, and prevent the central axis of the baffle from deviating from the central axis of the smoke inlet window, thereby preventing smoke leakage. In addition, a position sensor can be integrated on the slide rail, and the position of the baffle can be determined by the feedback signal of the position sensor, so as to accurately adjust the relative position of the baffle and the smoke inlet window.

[0035] like Figures 2-4 As shown, optionally, the first slide rail 41 includes a first fixed rail 411 and a first movable rail 412, the first movable rail 412 being slidably disposed relative to the first fixed rail 411, and the first fixed rail 411 being fixed to the first inner wall 21; the second slide rail 42 includes a second fixed rail 421 and a second movable rail 422, the second movable rail 422 being slidably disposed relative to the second fixed rail 421, and the second fixed rail 421 being fixed to the first side of the fixing plate 231; the third slide rail 43 includes a third fixed rail 431 and a third movable rail 432, the third movable rail... 432 is slidably disposed relative to the third fixed rail 431, the third fixed rail 431 being fixed to the second side of the fixed plate 231; the fourth slide rail 44 includes a fourth fixed rail 441 and a fourth moving rail 442, the fourth moving rail 442 being slidably disposed relative to the fourth fixed rail 441, the fourth fixed rail 441 being fixed to the second inner wall 22; the first baffle 31a includes a first baffle portion 311a, a second baffle portion 312a and a third baffle portion 313a, the first baffle portion 311a and the second baffle portion 312a being positioned... Located on opposite sides of the third baffle portion 313a, and both located on the side of the third baffle portion 313a away from the first smoke inlet window 201a; the planes containing the first baffle portion 311a and the second baffle portion 312a are both perpendicular to the plane containing the third baffle portion 313a, the first baffle portion 311a is fixed to the first moving rail 412, and the second baffle portion 312a is fixed to the second moving rail 422; the second baffle 31b includes the fourth baffle portion 311b, the fifth baffle portion 312b, and the... The sixth baffle portion 313b, the fourth baffle portion 311b and the fifth baffle portion 312b are located on opposite sides of the sixth baffle portion 313b, and are all located on the side of the sixth baffle portion 313b away from the second smoke inlet window 201b; the planes on which the fourth baffle portion 311b and the fifth baffle portion 312b are located are perpendicular to the plane on which the sixth baffle portion 313b is located, the fourth baffle portion 311b is fixed on the third moving rail 432, and the fifth baffle portion 312b is fixed on the fourth moving rail 442.

[0036] This arrangement helps to ensure the structural stability of the device and its service life. In addition, through the above-mentioned baffle structure design, the middle plane part of the baffle 31 (such as the third baffle portion 313a) is located on the side of the two side wall portions (such as the first baffle portion 311a and the second baffle portion 312a) close to the smoke inlet window 201. This allows the baffle 31 to be set close to the smoke inlet window 201, reducing the occurrence of smoke leakage and improving the performance of the device.

[0037] like Figures 2-4 As shown, optionally, the range hood also includes a fan housing 50 for housing the fan; the fan housing 50 is located below the stove 300 and is plugged into the smoke extraction chamber 20.

[0038] Reference Figure 4 The lower end of the smoking chamber 20 is provided with a fan connection hole 203. The smoking chamber 20 and the fan housing 50 can be connected through the fan connection hole 203. Specifically, the fan housing 50 can be inserted from the rear of the smoking chamber 20 to the front for connection. The smoking chamber and the fan housing 50 can be connected by screws.

[0039] like Figure 3 As shown, optionally, the baffle drive mechanism 32 includes a drive motor 321 and a push rod 322; the fan housing 50 includes a first top plate 501, the drive motor 321 is fixed on the first top plate 501, and the push rod 322 is connected to the side of the baffle 31 facing the first top plate 501.

[0040] Reference Figure 3 The drive motor 321 can be fixed to the first top plate 501 by the fixing member 61. In this embodiment, by setting the drive electrode 321 to be fixed to the first top plate 501 of the fan housing 50, and setting the push rod 322 to be connected to the lower end of the baffle 31, the baffle 31 can move in the air duct cavity, which helps to reduce the distance between the upper boundary of the smoke inlet window 201 and the second top plate 202, and improves the aesthetics of the product. For example, refer to Figure 4 Optionally, along the first direction Z, the vertical distance between the upper boundary of the smoke inlet window and the second top plate 202 is less than 1 / 10 of the total height of the baffle 31.

[0041] Of course, this setting is not unique. In other embodiments, optionally, along the first direction Z, the distance between the second top plate 202 and the smoke inlet window 201 is greater than 1 / 2 of the height of the baffle 31.

[0042] Specifically, the distance between the second top plate 202 and the smoke inlet window 201 refers to the spatial distance between the lower surface of the second top plate 202 and the upper boundary of the smoke inlet window 201, which is the movable distance of the baffle 31 above the upper boundary of the smoke inlet window 201. In this embodiment, by setting the distance between the second top plate 202 and the smoke inlet window 201 to be greater than half the height of the baffle 31, the baffle can have a certain amount of moving space above the smoke inlet window 201. This exposes the area below the smoke inlet window, resulting in better smoke extraction for low-profile cookware.

[0043] like Figure 4 As shown, optionally, the range hood also includes an oil filter 70, which is located inside the smoke extraction chamber 20 and on the side of the baffle 31 opposite to the smoke inlet window 201; the oil filter 70 covers the smoke inlet window 201. This embodiment, by setting the oil filter 70 inside the smoke extraction chamber 20 and positioning it on the side of the baffle 31 opposite to the smoke inlet window 201, improves the aesthetics of the device and allows for the filtering of oil fumes, thus protecting the structure inside the smoke extraction chamber 20. In other embodiments, the oil filter 70 may also be positioned between the baffle 31 and the smoke inlet window 201; this embodiment of the invention does not limit this.

[0044] Example 2 Based on the same inventive concept, this invention also provides a control method for a range hood. This control method can be executed using any range hood provided in any embodiment of this invention, and can be specifically executed by a control module.

[0045] like Figure 6 As shown, the control method includes the following steps: S601. Obtain the first image information of the area where the stove is located through the image acquisition module.

[0046] S602. Based on the first image information, control the baffle driving mechanism to drive the baffle to move along the first direction to adjust the relative position of the baffle and the smoke inlet window.

[0047] The first direction is the direction perpendicular to the surface of the stove.

[0048] Specifically, the first image information refers to the image information captured during the start-up process of the range hood. (Refer to...) Figures 1-4Based on the first image information, the current smoke extraction requirement can be determined. Then, by controlling the baffle drive mechanism 32, the baffle 31 is driven to move along the first direction Z, adjusting the relative position of the baffle 31 and the smoke inlet window 201. This allows for adjustment of the actual opening area and size of the smoke inlet window, meeting the smoke extraction requirements. Compared to a fixed smoke inlet design, the actual opening area and size of the smoke inlet window can be adjusted according to the state of the oil fumes, avoiding negative pressure waste or excess, and improving the smoke extraction effect. Furthermore, since the smoke inlet window 201 and the stove 200 are configured in a one-to-one correspondence in this embodiment, the relative position of the baffle 31 and the smoke inlet window 201 can be adjusted individually for each stove. Compared to multiple stoves simultaneously corresponding to one smoke inlet, this avoids functional redundancy, reduces power consumption, and improves smoke extraction efficiency.

[0049] Example 3 This invention provides a control method for a range hood, which is further optimized based on the above embodiments. For example... Figure 7 As shown, in this embodiment, the control method for the range hood includes the following steps: S701, Receives the stove start signal.

[0050] S702. In response to the stove start signal, control the baffle drive mechanism to drive the baffle to move along the first direction so that the baffle and the smoke inlet window have a preset overlap area; the preset overlap area is less than the total area of ​​the smoke inlet window.

[0051] The stove start signal refers to the signal that the user turns on the stove. Upon receiving this signal, it indicates that the user has started cooking, which will produce fumes, and the range hood needs to be turned on.

[0052] Reference Figure 3 and Figure 4 It is understandable that the initial relative position of the baffle 31 and the smoke inlet window 201 is such that the baffle 31 completely blocks the smoke inlet window 201, that is, the overlapping area of ​​the two is equal to the total area of ​​the smoke inlet window. In this embodiment, before acquiring the first image information of the area where the stove is located, the baffle driving mechanism is controlled to move the baffle along the first direction in response to the stove start signal, so that there is a smaller preset overlapping area between the baffle and the smoke inlet window. This allows a certain area of ​​the window to be opened first, responding to the user's cooking actions and timely extracting oil fumes, thus improving the user experience. Subsequently, after the smoke inlet window has been opened to a certain extent, the relative position of the baffle and the smoke inlet window can be further adjusted according to the first image information acquired by the image acquisition module, so as to achieve the above-mentioned effects of improving the oil fume extraction effect, reducing power consumption, and improving the oil fume extraction efficiency.

[0053] Optionally, the overlap area is preset to be half the total area of ​​the smoke inlet window. In this way, when the stove starts, half of the smoke inlet window can be opened first to respond to the user's smoke exhaust needs in a timely manner and ensure a certain smoke extraction effect.

[0054] S703: Obtain the first image information of the area where the stove is located through the image acquisition module.

[0055] S704. Determine the oil fume concentration based on the information in the first image.

[0056] S705. Determine whether the oil fume concentration is greater than the first concentration threshold. If yes, proceed to S706; otherwise, proceed to S707.

[0057] S706. The control baffle driving mechanism drives the baffle to move along the first sub-direction so that the baffle and the smoke inlet window have a second overlapping area, the second overlapping area being smaller than the preset overlapping area.

[0058] S707. Determine whether the oil fume concentration is less than the second concentration threshold. If yes, proceed to S708; otherwise, proceed to S709.

[0059] S708, The control baffle drive mechanism drives the baffle to move along the second sub-direction so that the baffle and the smoke inlet window have a third overlapping area, the third overlapping area being greater than the preset overlapping area.

[0060] S709, Control the baffle to maintain its current position.

[0061] The first direction includes a first sub-direction and a second sub-direction, which are opposite directions; the first concentration threshold is greater than the second concentration threshold.

[0062] Specifically, during the cooking process, the concentration of oil fumes can be determined based on the acquired first image information. Then, based on the preset overlapping area, the relative positions of the baffle and the smoke inlet window can be further adjusted to adapt to the current smoke exhaust requirements, thereby achieving the aforementioned effects of improving smoke extraction, reducing power consumption, and increasing smoke extraction efficiency.

[0063] The first concentration threshold can be greater than or equal to the oil fume concentration corresponding to the difference between the actual open area of ​​the smoke inlet window and the preset overlap area. If the current oil fume concentration is greater than the first concentration threshold, it indicates that the current open area of ​​the smoke inlet window (the difference between the total area and the preset overlap area) is insufficient to meet the smoke exhaust requirements, and the open area of ​​the smoke inlet window needs to be further increased. In this embodiment, when the oil fume concentration is determined to be greater than the first concentration threshold, the baffle driving mechanism is controlled to drive the baffle to move along the first sub-direction, so that the baffle and the smoke inlet window have a second overlap area smaller than the preset overlap area, that is, further reduce the overlap area between the baffle and the smoke inlet window, thereby further increasing the actual open area of ​​the smoke inlet window and improving the smoke extraction effect.

[0064] Conversely, if the current oil fume concentration is less than the second concentration threshold, it indicates that the current open area of ​​the smoke inlet window (the difference between the total area and the preset overlapping area) far exceeds the smoke exhaust demand. By controlling the baffle drive mechanism to drive the baffle to move in the opposite second sub-direction, the baffle and the smoke inlet window have a third overlapping area that is larger than the preset overlapping area. This can further reduce the actual open area of ​​the smoke inlet window, avoid negative pressure waste, and improve the smoke extraction effect.

[0065] When the oil fume concentration is between the second concentration threshold and the first concentration threshold, it indicates that the current opening area of ​​the smoke inlet window slightly exceeds the smoke exhaust demand. The baffle can be controlled to remain in its current position to reduce power consumption.

[0066] It should be noted that the specific value of the second concentration threshold can be set by the user, and the embodiments of the present invention do not limit this.

[0067] For example, refer to Figure 3 Taking the case where the baffle has no room to move above the upper boundary of the smoke inlet window as an example, the first sub-direction mentioned above is specifically the direction downward perpendicular to the stove 300. The greater the distance the baffle moves downward, the larger the actual opening area of ​​the smoke inlet window. The second sub-direction specifically refers to the direction upward perpendicular to the stove 300.

[0068] Example 4 This invention provides another method for controlling a range hood. (Refer to...) Figure 5 Optionally, the smoking chamber 20 includes a second top plate 202, and along the first direction Z, the distance between the second top plate 202 and the smoke inlet window 201 is greater than 1 / 2 of the height of the baffle. Correspondingly, as... Figure 8 As shown, in this embodiment, the control method for the range hood includes the following steps: S801, Receives the stove start signal.

[0069] S802: In response to the stove start signal, the second image information of the area where the stove is located is obtained through the image acquisition module.

[0070] S803. Determine the height of the kitchen utensils on the stove based on the second image information.

[0071] S804. Determine whether the height of the kitchen utensils is greater than or equal to the first height threshold. If yes, execute S805; otherwise, execute S813.

[0072] S805, the control baffle drive mechanism drives the baffle to move from the initial position away from the second top plate until the baffle and the smoke inlet window have a preset overlap area, exposing the first target area of ​​the smoke inlet window.

[0073] S806. Obtain the first image information of the area where the stove is located through the image acquisition module.

[0074] S807. Determine the oil fume concentration based on the information in the first image.

[0075] S808. Determine whether the oil fume concentration is greater than the first concentration threshold. If yes, proceed to S809; otherwise, proceed to S810.

[0076] S809. Control the baffle drive mechanism to drive the baffle to move along the first sub-direction so that the baffle and the smoke inlet window have a second overlapping area, the second overlapping area being smaller than the preset overlapping area.

[0077] S810. Determine whether the oil fume concentration is less than the second concentration threshold. If yes, execute S811; otherwise, execute S812.

[0078] S811, control the baffle drive mechanism to drive the baffle to move along the second sub-direction so that the baffle and the smoke inlet window have a third overlapping area, the third overlapping area being greater than the preset overlapping area.

[0079] S812, Control the baffle to maintain its current position.

[0080] S813: The control baffle drive mechanism drives the baffle to move from its initial position toward the direction closer to the second top plate until the baffle and the smoke inlet window have a preset overlap area, exposing the second target area of ​​the smoke inlet window; wherein, the first target area is located on the side of the second target area away from the stove. Then, S806-S812 are executed.

[0081] Specifically, refer to Figure 5 The difference between this embodiment and the second embodiment is that the baffle 31 not only has a moving space in the area below the lower boundary of the smoke inlet window 201, but also has a certain moving space in the area above the upper boundary of the smoke inlet window 201. In this way, the overlapping position of the baffle and the smoke inlet window can be selected according to the adaptability of different stoves to meet the usage needs of different working conditions and further improve the smoke extraction effect.

[0082] Currently, cookware that can be used on a stovetop includes shallow cookware (such as frying pans, skillets, baking trays, etc.), medium-deep cookware (such as saucepans, milk pots, casseroles, traditional woks, etc.), and tall cookware (such as pressure cookers, multi-tiered steamers, etc.). The aforementioned first height threshold can specifically be the height value between that of shallow and medium-deep cookware.

[0083] The initial position refers to the position of the baffle 31 when it completely blocks the smoke inlet window 201, at which point the range hood has not yet been turned on.

[0084] The second image information is the image information acquired when the stove start signal is received. In this embodiment, the height of the cookware on the stove is determined based on the second image information. When the cookware height is greater than or equal to a first height threshold, it indicates that the cookware used by the user is relatively tall, such as a medium-deep or tall cookware. At this time, by controlling the baffle drive mechanism to move the baffle from its initial position away from the second top plate, the area above the smoke inlet window (the first target area) can be exposed, ensuring effective smoke extraction. Next, during the cooking process, the relative position of the baffle and the smoke inlet window can be further adjusted according to the concentration of cooking fumes, as explained in Embodiment 2 above, and will not be repeated here. It should be noted that when the height of the cookware is greater than or equal to the first height threshold, the first sub-direction is the direction perpendicular to the stove downwards, and the second sub-direction is the direction perpendicular to the stove upwards. That is, when the height of the cookware is greater than or equal to the first height threshold, if the current oil fume concentration is greater than the first concentration threshold, the baffle driving mechanism is controlled to drive the baffle to continue moving away from the second top plate to increase the exposure area of ​​the smoke inlet window; if the current oil fume concentration is less than the second concentration threshold, the baffle driving mechanism is controlled to drive the baffle to move in the opposite direction (i.e., closer to the second top plate) to reduce the exposure area of ​​the smoke inlet window.

[0085] Similarly, when the height of the cookware is determined to be less than the first height threshold based on the second image information, it indicates that the cookware used by the user is a low-height cookware, such as a shallow pot. In this case, by controlling the baffle drive mechanism to move the baffle from its initial position towards the direction closer to the second top plate, the area below the smoke inlet window (the second target area) can be exposed, making the actual opening area of ​​the smoke inlet window closer to the cookware, thus ensuring the smoke extraction effect when cooking with a shallow pot. Next, during the cooking process, the relative position of the baffle and the smoke inlet window can be further adjusted according to the oil fume concentration, as explained in the above embodiment two, and will not be repeated here. It should be noted that when the height of the cookware is less than the first height threshold, the first sub-direction is the direction perpendicular to the stove and pointing upwards, and the second sub-direction is the direction perpendicular to the stove and pointing downwards. That is, when the height of the cookware is less than the first height threshold, if the current oil fume concentration is greater than the first concentration threshold, the baffle driving mechanism is controlled to drive the baffle to continue moving towards the second top plate to increase the exposure area of ​​the smoke inlet window; if the current oil fume concentration is less than the second concentration threshold, the baffle driving mechanism is controlled to drive the baffle to move in the opposite direction (i.e. away from the second top plate) to reduce the exposure area of ​​the smoke inlet window.

[0086] In this embodiment, upon receiving the stove start signal, the second image information is acquired in advance through the image acquisition module to determine the height of the cookware. Based on the height of the cookware, the movement direction of the baffle is determined, so that the actual opening area of ​​the smoke inlet window is different for cookware of different heights. This can better improve the smoke extraction effect under different cookware operating conditions. Furthermore, the oil fume concentration is determined based on the acquired first image information, and the relative position of the baffle and the smoke inlet window is adjusted again based on the oil fume concentration. This can achieve the above-mentioned effects of improving the oil fume extraction effect, reducing power consumption, and improving the oil fume extraction efficiency.

[0087] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A range hood, characterized in that, include: Control module, image acquisition module, smoking chamber and smoke guide assembly; The stove platform where the stove is located has a first opening, and the smoke extraction chamber passes through the first opening and through the stove platform; the smoke extraction chamber is provided with a smoke inlet window, which is located above the stove platform and is provided in a one-to-one correspondence with the stove. The image acquisition module is fixed to the smoking chamber and is positioned facing the area where the stove is located; The smoke guiding assembly is located inside the smoking chamber and is configured to correspond one-to-one with the smoke inlet window; the smoke guiding assembly includes a baffle and a baffle driving mechanism, and the area of ​​the baffle is larger than the area of ​​the smoke inlet window; Both the image acquisition module and the baffle driving mechanism are electrically connected to the control module; the control module is used to acquire first image information of the area where the stove is located through the image acquisition module, and control the baffle driving mechanism to drive the baffle to move along a first direction according to the first image information, so as to adjust the relative position of the baffle and the smoke inlet window; The first direction is perpendicular to the surface of the stove.

2. The range hood according to claim 1, characterized in that, The smoke inlet window includes at least a first smoke inlet window and a second smoke inlet window, and the baffle includes at least a first baffle and a second baffle; The inner wall of the smoking chamber includes a first inner wall, a second inner wall, and a third inner wall. The smoke inlet window is disposed on the third inner wall. The first inner wall and the second inner wall are located on opposite sides of the third inner wall. A fixing plate is also disposed on the third inner wall. The first inner wall and the fixing plate are located on opposite sides of the first smoke inlet window, and the second inner wall and the fixing plate are located on opposite sides of the second smoke inlet window. The range hood further includes a first slide rail, a second slide rail, a third slide rail, and a fourth slide rail extending along the first direction. The first slide rail is fixed to the first inner wall, the second slide rail is fixed to the first side of the fixing plate, the third slide rail is fixed to the second side of the fixing plate, and the fourth slide rail is fixed to the second inner wall. The first side and the second side are located on opposite sides of the fixing plate. The first baffle moves along the first direction via the first slide rail and the second slide rail, and the second baffle moves along the first direction via the third slide rail and the fourth slide rail.

3. The range hood according to claim 2, characterized in that, The first slide rail includes a first fixed rail and a first movable rail, the first movable rail being slidably disposed relative to the first fixed rail, and the first fixed rail being fixed to the first inner wall; The second slide rail includes a second fixed rail and a second movable rail, the second movable rail being slidably disposed relative to the second fixed rail, and the second fixed rail being fixed to the first side of the fixed plate; The third slide rail includes a third fixed rail and a third movable rail. The third movable rail is slidably disposed relative to the third fixed rail, and the third fixed rail is fixed to the second side of the fixed plate. The fourth slide rail includes a fourth fixed rail and a fourth movable rail. The fourth movable rail is slidably disposed relative to the fourth fixed rail, and the fourth fixed rail is fixed to the second inner wall. The first baffle includes a first baffle portion, a second baffle portion, and a third baffle portion. The first baffle portion and the second baffle portion are located on opposite sides of the third baffle portion, and both are located on the side of the third baffle portion away from the first smoke inlet window. The planes on which the first baffle portion and the second baffle portion are located are perpendicular to the plane on which the third baffle portion is located. The first baffle portion is fixed on the first moving rail, and the second baffle portion is fixed on the second moving rail. The second baffle includes a fourth baffle portion, a fifth baffle portion, and a sixth baffle portion. The fourth baffle portion and the fifth baffle portion are located on opposite sides of the sixth baffle portion, and both are located on the side of the sixth baffle portion away from the second smoke inlet window. The planes on which the fourth baffle portion and the fifth baffle portion are located are perpendicular to the plane on which the sixth baffle portion is located. The fourth baffle portion is fixed on the third moving rail, and the fifth baffle portion is fixed on the fourth moving rail.

4. The range hood according to claim 1, characterized in that, The range hood also includes a fan housing for housing the fan; The fan housing is located below the stove and is connected to the smoke extraction chamber.

5. The range hood according to claim 4, characterized in that, The baffle driving mechanism includes a drive motor and a push rod; The fan housing includes a first top plate, the drive motor is fixed to the first top plate, and the push rod is connected to the side of the baffle facing the first top plate.

6. The range hood according to claim 1, characterized in that, The smoking chamber includes a second top plate, and along the first direction, the distance between the second top plate and the smoke inlet window is greater than 1 / 2 of the height of the baffle.

7. A control method for a range hood, implemented using the range hood described in any one of claims 1-6, characterized in that, The control method includes: The first image information of the area where the stove is located is obtained through the image acquisition module; Based on the first image information, the control baffle driving mechanism drives the baffle to move along the first direction to adjust the relative position of the baffle and the smoke inlet window; The first direction is the direction perpendicular to the surface of the stove.

8. The control method according to claim 7, characterized in that, Before acquiring the first image information of the area where the stove is located through the image acquisition module, the control method further includes: Receive the stove start signal; In response to the stove start signal, the baffle driving mechanism is controlled to drive the baffle to move along the first direction so that the baffle and the smoke inlet window have a preset overlap area; the preset overlap area is less than the total area of ​​the smoke inlet window.

9. The control method according to claim 8, characterized in that, The first direction includes a first sub-direction and a second sub-direction, wherein the first sub-direction and the second sub-direction are opposite directions; Based on the first image information, the baffle driving mechanism is controlled to drive the baffle to move along a first direction to adjust the relative position of the baffle and the smoke inlet window, including: The concentration of cooking fumes is determined based on the first image information; When the oil fume concentration is greater than the first concentration threshold, the baffle driving mechanism is controlled to drive the baffle to move along the first sub-direction, so that the baffle and the smoke inlet window have a second overlapping area, the second overlapping area being smaller than the preset overlapping area; When the oil fume concentration is less than the second concentration threshold, the baffle driving mechanism is controlled to drive the baffle to move along the second sub-direction, so that the baffle and the smoke inlet window have a third overlapping area, and the third overlapping area is greater than the preset overlapping area. Wherein, the first concentration threshold is greater than the second concentration threshold.

10. The control method according to claim 8, characterized in that, The smoking chamber includes a second top plate, and along the first direction, the distance between the second top plate and the smoke inlet window is greater than 1 / 2 of the height of the baffle. Controlling the baffle driving mechanism to drive the baffle to move along the first direction, so that the baffle and the smoke inlet window have a preset overlap area, includes: The image acquisition module obtains second image information of the area where the stove is located. The height of the kitchen utensils on the stove is determined based on the second image information; When the height of the kitchen appliance is greater than or equal to the first height threshold, the baffle driving mechanism is controlled to drive the baffle to move from the initial position away from the second top plate until the baffle and the smoke inlet window have the preset overlap area, exposing the first target area of ​​the smoke inlet window; When the height of the kitchenware is less than the first height threshold, the baffle driving mechanism is controlled to drive the baffle to move from the initial position toward the direction closer to the second top plate until the baffle and the smoke inlet window have the preset overlap area, exposing the second target area of ​​the smoke inlet window; The first target area is located on the side of the second target area away from the stove.

Images