Range hood and control method thereof

Abstract

According to the range hood and the control method thereof, a baffle is arranged on the outer side of a smoke inlet of the range hood, the top of the baffle is rotationally connected to the top of the smoke inlet, and the opening and closing angle of the baffle relative to the smoke inlet and the left-right inclination angle of the baffle relative to the horizontal plane are adjustable; the method comprises the steps of firstly obtaining current to-be-absorbed oil smoke information; and then the opening and closing angle and / or the left-right inclination angle of the baffle are / is adjusted according to the current to-be-absorbed oil smoke information. By means of the technical scheme, the problems that when an existing range hood cannot absorb the current smoke amount, noise is increased by increasing the rotating speed of the draught fan, and user experience is affected are solved; in order to solve the problem of negative pressure waste caused by deviation of the negative pressure center position from the oil fume, the smoke suction amount and the negative pressure position of the range hood are adjusted by adjusting the opening and closing angle and / or the left-right inclination angle of the baffle, and the oil fume can be reasonably sucked under low noise.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of kitchen appliances, and in particular to a range hood and a control method thereof. Background Art

[0002] A tabletop range hood is an appliance designed to absorb and remove fumes and odors generated during cooking. Compared to traditional range hoods, which are fixed above the kitchen stove, tabletop range hoods are more flexible and can be used in various spaces, including living rooms, outdoor dining areas, and more. They effectively filter and purify the air, maintaining a clean and comfortable dining environment. Therefore, they have higher requirements for fume extraction performance and noise reduction.

[0003] When facing a large amount of oil smoke, existing desktop range hoods often increase the fan speed to improve the extraction efficiency, which will cause greater noise and thus affect the user experience. Summary of the Invention

[0004] The embodiment of the present invention provides a range hood and a control method thereof, which adjusts the angle of a baffle to increase the air volume and adjust the negative pressure position of the range hood, thereby enhancing the oil fume suction effect while ensuring that the noise is at a low level.

[0005] In a first aspect, an embodiment of the present invention provides a range hood, wherein a baffle is provided on the outside of the smoke inlet of the range hood, the top of the baffle is rotatably connected to the top of the smoke inlet, and the opening and closing angle of the baffle relative to the smoke inlet and the left and right inclination angle relative to the horizontal plane are adjustable.

[0006] Optionally, the range hood further comprises an image sensor, the image sensor and the smoke inlet being located on the same side of the range hood, and the image sensor being located at the center of the range hood in the horizontal direction;

[0007] The image sensor is used to obtain the image of the oil smoke to be absorbed.

[0008] Optionally, the range hood further comprises a first U-shaped connecting portion, a second U-shaped connecting portion, a first rotating motor, a second rotating motor and a connecting frame;

[0009] The first U-shaped connecting portion and the second U-shaped connecting portion are arranged opposite to each other in the horizontal direction; one end of the first U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the first rotating motor; one end of the second U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the second rotating motor;

[0010] The connecting frame is fixedly connected to the top of the smoke inlet, one end of the connecting frame in the extending direction is fixedly connected to the inner side of the first rotating motor, and the other end is fixedly connected to the inner side of the second rotating motor;

[0011] The first rotating motor and the second rotating motor are configured to rotate synchronously or respectively at proportional rotation angles to adjust the opening and closing angle of the baffle relative to the smoke inlet and / or the left and right inclination angle relative to the horizontal plane through the first U-shaped connecting portion and the second U-shaped connecting portion.

[0012] In a second aspect, an embodiment of the present invention provides a control method for a range hood, wherein a baffle is provided on the outer side of a smoke inlet of the range hood, the top of the baffle being rotatably connected to the top of the smoke inlet, and the opening and closing angle of the baffle relative to the smoke inlet and the left and right inclination angle relative to the horizontal plane are adjustable;

[0013] The control method includes:

[0014] Get the current oil smoke information to be absorbed;

[0015] According to the current information of the oil smoke to be absorbed, the opening and closing angle and / or the left and right inclination angle of the baffle are adjusted.

[0016] Optionally, the range hood includes an image sensor, the image sensor and the smoke inlet are located on the same side of the range hood, and the image sensor is located at the center of the range hood in the horizontal direction;

[0017] Get the current oil smoke information to be absorbed, including:

[0018] Using an image sensor, an image of the oil smoke to be absorbed is obtained;

[0019] In the current image of the oil smoke to be absorbed, identifying the outline of the current oil smoke to be absorbed;

[0020] According to the current information of the oil smoke to be absorbed, the opening and closing angle and / or the left and right inclination angle of the baffle are adjusted, including:

[0021] According to the contour of the oil smoke to be absorbed, the opening and closing angle and / or the left and right inclination angle of the baffle are adjusted.

[0022] Optionally, before adjusting the opening and closing angle and / or the left and right inclination angle of the baffle according to the current contour of the oil smoke to be absorbed, the method further includes:

[0023] It is determined that the contour area of ​​the current oil smoke to be absorbed is larger than the preset contour area.

[0024] Optionally, the current image of the oil fume to be absorbed includes a first region and a second region sequentially arranged in the horizontal direction; the first region and the second region have equal areas and are symmetrical about the midline of the current image of the oil fume to be absorbed in the vertical direction;

[0025] Adjust the opening and closing angle and / or left and right tilt angle of the baffle according to the contour of the oil smoke to be absorbed, including:

[0026] Obtaining the ratio of the area of ​​the oil smoke contour in the first region of the current oil smoke image to be absorbed to the area of ​​the oil smoke contour in the second region;

[0027] Adjust the opening and closing angle and / or left and right tilt angle of the baffle according to the area ratio.

[0028] Optionally, the opening and closing angle and / or the left and right tilt angle of the baffle are adjusted according to the area ratio, including:

[0029] When the area ratio is 1, the opening and closing angle of the baffle is increased to increase the smoking efficiency of the smoke inlet of the range hood.

[0030] Optionally, when the area ratio is 1, before increasing the opening and closing angle of the baffle, the method further includes:

[0031] It is determined that the opening and closing angle of the baffle is less than a first angle threshold.

[0032] Optionally, the range hood further comprises a first U-shaped connecting portion, a second U-shaped connecting portion, a first rotating motor, a second rotating motor and a connecting frame; the first U-shaped connecting portion and the second U-shaped connecting portion are arranged opposite to each other in a horizontal direction; one end of the first U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the first rotating motor; one end of the second U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the second rotating motor; the connecting frame is fixedly connected to the top of the smoke inlet, one end of the connecting frame in an extending direction is fixedly connected to the inner side of the first rotating motor, and the other end is fixedly connected to the inner side of the second rotating motor;

[0033] When the area ratio is 1, the opening and closing angles of the baffle are increased, including:

[0034] When the area ratio is 1, the first rotary motor and the second rotary motor are controlled to rotate synchronously to increase the opening and closing angle of the baffle.

[0035] Optionally, the opening and closing angle and / or the left and right tilt angle of the baffle are adjusted according to the area ratio, including:

[0036] When the area ratio is not 1, the left and right inclination angles of the baffle are adjusted according to the area ratio.

[0037] Optionally, when the area ratio is not 1, before adjusting the left and right inclination angles of the baffle according to the area ratio, the method further includes:

[0038] It is determined that the absolute value of the left and right inclination angles of the baffle is less than a second angle threshold.

[0039] Optionally, the range hood further comprises a first U-shaped connecting portion, a second U-shaped connecting portion, a first rotating motor, a second rotating motor and a connecting frame; the first U-shaped connecting portion and the second U-shaped connecting portion are arranged opposite to each other in a horizontal direction; one end of the first U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the first rotating motor; one end of the second U-shaped connecting portion is fixedly connected to the top of the baffle, and the other end is transmission-connected to the rotating shaft of the second rotating motor; the connecting frame is fixedly connected to the top of the smoke inlet, one end of the connecting frame in an extending direction is fixedly connected to the inner side of the first rotating motor, and the other end is fixedly connected to the inner side of the second rotating motor;

[0040] When the area ratio is not 1, adjust the left and right inclination angles of the baffle according to the area ratio, including:

[0041] When the area ratio is not 1, the ratio of the rotation angles of the first rotating motor and the second rotating motor is controlled to be equal to the area ratio, so as to adjust the left and right inclination angles of the baffle.

[0042] Optionally, after obtaining the current oil smoke information to be absorbed,

[0043] Before adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information of the oil smoke to be absorbed, the following steps are also included:

[0044] It is determined whether the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, and when the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, the speed of the fan in the range hood is increased to increase the exhaust efficiency of the range hood.

[0045] Optionally, after increasing the rotation speed of the fan in the range hood to increase the smoking efficiency of the range hood, the method further includes:

[0046] Detect the wind speed at the range hood outlet;

[0047] When the wind speed is greater than the preset wind speed, the fan speed is reduced by a preset ratio.

[0048] Optionally, after adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information of the oil smoke to be absorbed, the method further includes:

[0049] If a shutdown signal is received, the range hood will be turned off after a preset time, and the opening and closing angles and left and right tilt angles of the baffle will be reset to the initial angles.

[0050] An embodiment of the present invention provides a range hood and a control method thereof. A baffle is provided on the outside of the smoke inlet of the range hood, and the top of the baffle is rotatably connected to the top of the smoke inlet. The opening and closing angle of the baffle relative to the smoke inlet and the left and right tilt angle relative to the horizontal plane are adjustable. The method first obtains information about the current amount of oil smoke to be absorbed; then, based on the information about the current amount of oil smoke to be absorbed, the opening and closing angle and / or the left and right tilt angle of the baffle are adjusted. Utilizing the above technical solution, the problem that when existing range hoods cannot absorb the current amount of smoke, increasing the speed of the fan will increase the noise, affecting the user experience; and the problem that the deviation of the negative pressure center position from the oil smoke will also cause negative pressure waste is solved. By adjusting the opening and closing angle and / or the left and right tilt angle of the baffle, and then adjusting the amount of smoke and the negative pressure position of the range hood, the oil smoke can be reasonably absorbed with low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a structural diagram of a range hood provided by Example 1 of the present invention;

[0052] Figure 2 and Figure 3 yes Figure 1 Schematic diagram of the range hood with the baffle at different adjustment angles;

[0053] Figure 4 This is a schematic diagram of another range hood structure provided by the first embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of a baffle structure provided by Example 1 of the present invention;

[0055] Figure 6 This is a schematic diagram of a baffle connection structure provided by Example 1 of the present invention;

[0056] Figure 7 This is a schematic structural diagram of a U-shaped connecting portion provided in Example 1 of the present invention;

[0057] Figure 8 This is a structural diagram of a connecting frame provided in Example 1 of the present invention;

[0058] Figure 9 This is a flow chart of a method for controlling a range hood provided in the second embodiment of the present invention;

[0059] Figure 10 This is a flow chart of a method for controlling a range hood provided in a third embodiment of the present invention;

[0060] Figure 11 Schematic diagram of an image of oil smoke to be absorbed provided by the third embodiment of the present invention;

[0061] Figure 12 This is another schematic diagram of an image of oil smoke to be absorbed provided by the third embodiment of the present invention;

[0062] Figure 13 This is a flow chart of a method for controlling a range hood provided in a fourth embodiment of the present invention;

[0063] Figure 14 This is a flowchart of a working process of a range hood provided by the fifth embodiment of the present invention;

[0064] Figure 15 This is a structural diagram of a range hood control device provided by Example 6 of the present invention;

[0065] Figure 16 This is a structural diagram of a range hood provided by Example 6 of the present invention;

[0066] Among them, 10-baffle, 11-baffle groove;

[0067] 20 - smoke inlet, 30 - image sensor, 31 - contour area of ​​the current smoke to be absorbed, 32 - preset contour area;

[0068] 41 - first U-shaped connecting portion, 42 - second U-shaped connecting portion, 43 - first rotating motor, 431 - rotating shaft of the first rotating motor, 44 - second rotating motor, 441 - rotating shaft of the second rotating motor, 45 - connecting frame;

[0069] 401-protrusion, 402-motor groove, 451-cylinder boss, 452-fixing bolt hole;

[0070] 410 - oil smoke information acquisition module to be absorbed, 420 - baffle adjustment module;

[0071] 51 - processor, 52 - storage device, 53 - input device, 54 - output device. DETAILED DESCRIPTION

[0072] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0073] It should be mentioned before discussing exemplary embodiments in more detail that some exemplary embodiments are described as processes or methods depicted as flow charts. Although flow charts describe various operations (or steps) as sequential processes, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of various operations can be rearranged. When its operation is completed, the process can be terminated, but can also have additional steps not included in the accompanying drawings. The process can correspond to methods, functions, procedures, subroutines, subprograms, etc. In addition, the features in the embodiments of the present invention and the embodiments can be combined with each other without conflict.

[0074] The term "including" and its variations used in the present invention are open inclusions, that is, "including but not limited to." The term "based on" means "based at least in part on." The term "one embodiment" means "at least one embodiment."

[0075] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or mutual dependence.

[0076] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0077] Example 1

[0078] Figure 1 This is a structural diagram of a range hood provided by the first embodiment of the present invention. Figure 2 and Figure 3 yes Figure 1 The diagram of the range hood baffle at different adjustment angles is shown in the figure. Figure 1-Figure 3 A baffle 10 is provided on the outside of the smoke inlet 20 of the range hood. The top of the baffle 10 is rotatably connected to the top of the smoke inlet 20. The opening and closing angle of the baffle 10 relative to the smoke inlet 20 and the left and right inclination angle relative to the horizontal plane are adjustable.

[0079] The baffle 10's opening and closing angles, as well as its left and right tilt relative to the horizontal plane, are adjustable to adapt to the current level of fume to be absorbed and alter the hood's extraction efficiency. For example, when the amount of fume to be absorbed is high, the opening and closing angles of the baffle 10 can be adjusted to increase the extraction area to ensure a better extraction efficiency. When the fume deviates from the hood's negative pressure center, some negative pressure is wasted, affecting the extraction efficiency. Therefore, the left and right tilt of the baffle 10 can be adjusted based on the location of the fume, thereby adjusting the hood's negative pressure center.

[0080] The range hood provided in this embodiment has a baffle installed outside the smoke inlet. The top of the baffle is pivotally connected to the top of the smoke inlet. The baffle's opening and closing angle relative to the smoke inlet and its left and right tilt relative to the horizontal plane are adjustable. The opening and closing angle and / or left and right tilt of the baffle can be adjusted based on the current amount of smoke to be absorbed. This embodiment solves the problem that existing range hoods, when unable to absorb the current amount of smoke, increase the fan speed, which increases noise and affects the user experience; and the negative pressure center position deviates from the smoke, which also causes negative pressure waste. By adjusting the opening and closing angle and / or left and right tilt of the baffle, the smoke volume and negative pressure position of the range hood can be adjusted, thereby effectively absorbing smoke with low noise.

[0081] Figure 4 This is another schematic diagram of the structure of a range hood provided by the first embodiment of the present invention, with reference to Figure 4 The range hood also includes an image sensor 30, located on the same side of the range hood as the smoke inlet 20 and horizontally centered. This means the center of the image sensor 30 corresponds to the negative pressure center. Image sensor 30 is used to capture an image of the current fume to be absorbed. Based on this image sensor 30, information about the current fume to be absorbed can be collected. This information can then be used to adjust the baffle's opening and closing angles or left and right tilt angles to meet current fume exhaust requirements and improve the range hood's extraction efficiency.

[0082] Figure 5 This is a schematic diagram of a baffle structure provided by the first embodiment of the present invention. Figure 6 This is a schematic diagram of a baffle connection structure provided by the first embodiment of the present invention, referring to Figure 5 and Figure 6 The range hood further includes a first U-shaped connecting portion 41, a second U-shaped connecting portion 42, a first rotating motor 43, a second rotating motor 44 and a connecting frame 45;

[0083] The first U-shaped connecting portion 41 and the second U-shaped connecting portion 42 are arranged opposite to each other in the horizontal direction; one end of the first U-shaped connecting portion 41 is fixedly connected to the top of the baffle 10, and the other end is transmission-connected to the rotating shaft 431 of the first rotating motor 43; one end of the second U-shaped connecting portion 42 is fixedly connected to the top of the baffle 10, and the other end is transmission-connected to the rotating shaft 441 of the second rotating motor 44;

[0084] The connecting frame 45 is fixedly connected to the top of the smoke inlet 20. One end of the connecting frame 45 is fixedly connected to the inner side of the first rotating motor 43, and the other end is fixedly connected to the inner side of the second rotating motor 44.

[0085] The first rotating motor 43 and the second rotating motor 44 are configured to rotate synchronously or respectively at proportional rotation angles to adjust the opening and closing angle of the baffle 10 relative to the smoke inlet 20 and / or the left and right inclination angle relative to the horizontal plane through the first U-shaped connecting portion 41 and the second U-shaped connecting portion 42.

[0086] Specifically, refer to Figure 5 、 Figure 6 A baffle groove 11 is also provided on the top of the baffle 10. One end of the first U-shaped connecting portion 41 is fixedly connected to the baffle 10 through one baffle groove 11, and one end of the second U-shaped connecting portion 42 is fixedly connected to the baffle 10 through another baffle groove 11. Figure 7 This is a schematic diagram of the structure of a U-shaped connection portion provided in Example 1 of the present invention, with reference to Figure 7 , a protrusion 401 is provided at one end of the U-shaped connecting portion, and the U-shaped connecting portion is fixedly connected to the baffle groove 11 at the top of the baffle 10 through the protrusion 401, and a motor groove 402 is provided inside the other end of the U-shaped connecting portion, such as Figure 7 As shown, the rotating shaft 441 of the second rotating motor 44 is in transmission connection with the motor groove 402 to drive the second U-shaped connecting portion 42 to rotate, thereby controlling the opening and closing of the baffle 10; Figure 8 This is a structural diagram of a connecting frame provided by the first embodiment of the present invention, with reference to Figure 8 Both ends of the connecting frame 45 are provided with cylindrical bosses 451 for accommodating the rotating motor, and the connecting frame 45 is also provided with fixing bolt holes 452 for fixed connection with the top of the smoke inlet 20.

[0087] Example 2

[0088] Figure 9 This is a flow chart of a range hood control method provided in the second embodiment of the present invention. This method is applicable to the control of range hoods. This method can be executed by a range hood control device, wherein the device can be implemented by software and / or hardware and is generally integrated on the range hood control device.

[0089] like Figure 9 As shown, a range hood control method provided in the second embodiment of the present invention includes the following steps:

[0090] S110: Obtain information on the current oil smoke to be absorbed.

[0091] For details, please refer to Figure 1-Figure 3 A baffle 10 is provided on the outside of the smoke inlet 20 of the range hood. The top of the baffle 10 is rotatably connected to the top of the smoke inlet 20. The opening and closing angle of the baffle 10 relative to the smoke inlet 20 and the left and right inclination angle relative to the horizontal plane are adjustable.

[0092] The current oil fume information to be absorbed can be understood as the amount of oil fume that the range hood needs to absorb and the position information of the oil fume relative to the range hood in the environment where the range hood is located.

[0093] S120 , adjusting the opening and closing angle and / or the left and right inclination angle of the baffle according to the current information of the oil smoke to be absorbed.

[0094] For example, the current information on oil fume to be absorbed can be the amount of oil fume to be absorbed and the position of the oil fume. When the amount of oil fume to be absorbed is large, in order to ensure a better smoking effect, it is necessary to adjust the opening and closing angle of the baffle 10 to increase the smoking area; and when the oil fume deviates from the negative pressure center position of the range hood, it will cause part of the negative pressure to be wasted, and will also affect the smoking effect. Therefore, it is necessary to adjust the left and right inclination angles of the baffle 10 according to the position of the oil fume, thereby adjusting the negative pressure center position of the range hood.

[0095] A second embodiment of the present invention provides a control method for a range hood, wherein a baffle is provided on the outside of the smoke inlet of the range hood, the top of the baffle being rotatably connected to the top of the smoke inlet, and the opening and closing angle of the baffle relative to the smoke inlet and the left and right tilt angle relative to the horizontal plane are adjustable. The control method first obtains information about the current amount of oil smoke to be absorbed; then, based on the information about the current amount of oil smoke to be absorbed, the opening and closing angle and / or the left and right tilt angle of the baffle are adjusted. This method solves the problem that when existing range hoods cannot absorb the current amount of smoke, increasing the fan speed will increase noise, affecting the user experience; and the problem that the deviation of the negative pressure center position from the oil smoke will also cause negative pressure waste. By adjusting the opening and closing angle and / or the left and right tilt angle of the baffle, and then adjusting the amount of smoke and the negative pressure position of the range hood, the oil smoke can be reasonably absorbed with low noise.

[0096] Based on the above embodiment, a modified embodiment of the above embodiment is proposed. It should be noted that, in order to simplify the description, only the differences from the above embodiment are described in the modified embodiment.

[0097] Example 3

[0098] Figure 10 This is a flow chart of a range hood control method provided by the third embodiment of the present invention. This third embodiment is optimized based on the above embodiments. In this embodiment, S110, obtaining information about the current fume to be absorbed, is further specified as follows: using an image sensor to obtain an image of the current fume to be absorbed; in the image of the current fume to be absorbed, identifying the outline of the current fume to be absorbed;

[0099] S120, adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information of the oil fume to be absorbed, is refined as follows: adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the current contour of the oil fume to be absorbed.

[0100] Before adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the contour of the current oil smoke to be absorbed, the following is added:

[0101] It is determined that the contour area of ​​the current oil smoke to be absorbed is larger than the preset contour area.

[0102] The baffle opening and closing angle and / or left and right tilt angle will be adjusted according to the contour of the oil smoke to be absorbed, which can be further refined as follows:

[0103] Obtaining the ratio of the area of ​​the oil smoke contour in the first region of the current oil smoke image to be absorbed to the area of ​​the oil smoke contour in the second region;

[0104] Adjust the opening and closing angle and / or left and right tilt angle of the baffle according to the area ratio.

[0105] For details not yet provided in this embodiment, please refer to the above embodiments.

[0106] refer to Figure 10 A range hood control method provided in a third embodiment of the present invention includes:

[0107] S210: Using an image sensor, obtain an image of the oil smoke to be absorbed.

[0108] Specifically, such as Figure 4 As shown, the range hood includes an image sensor 30. The image sensor 30 and the smoke inlet 20 are located on the same side of the range hood, and the image sensor 30 is horizontally centered. That is, the image sensor 30 captures the center of the negative pressure. Thus, the image sensor 30 can capture an image of the current smoke to be absorbed.

[0109] S220 : Identify the outline of the oil smoke to be absorbed in the image of the oil smoke to be absorbed.

[0110] S230: Determine whether the contour area of ​​the oil smoke to be absorbed is larger than a preset contour area.

[0111] Specifically, the preset contour area can be understood as the contour area set in advance according to the amount of oil smoke that the range hood can absorb. Figure 4 When the contour area 31 of the oil smoke to be absorbed is larger than the preset contour area 32, it indicates that the amount of oil smoke to be absorbed exceeds the amount of oil smoke that the range hood can absorb at this time, so the baffle 10 needs to be adjusted.

[0112] S240 , obtaining the ratio of the area of ​​the oil smoke contour in the first region of the current oil smoke image to be absorbed to the area of ​​the oil smoke contour in the second region.

[0113] Specifically, Figure 11 This is a schematic diagram of an image of oil smoke to be absorbed provided by the third embodiment of the present invention, with reference to Figure 11The current image of oil fume to be absorbed includes a first region 301 and a second region 302 arranged in sequence along the horizontal direction. The first and second regions 301 and 302 are equal in area and symmetrical about the vertical midline of the current image of oil fume to be absorbed. Oil fume is distributed in both the first and second regions 301 and 302. The ratio of the oil fume contour areas in the first and second regions 301 and 302 reflects the degree of deviation between the current negative pressure center and the oil fume center.

[0114] S250: Adjust the opening and closing angle and / or the left and right tilt angle of the baffle according to the area ratio.

[0115] For example, when the area ratio is 1, the opening and closing angle of the baffle is increased to increase the smoking efficiency of the smoke inlet of the range hood. Figure 11 When the area ratio is 1, it indicates that the amount of oil smoke in the left and right areas, i.e., the first area 301 and the second area 302, is equal. That is, the oil smoke is located at the center of the negative pressure of the range hood. At this time, there is no need to adjust the negative pressure position. It is only necessary to increase the opening and closing angle of the baffle to increase the smoking efficiency of the range hood's smoke inlet.

[0116] It should be added here that the above control method is mainly aimed at the situation where the contour area 31 of the oil smoke to be absorbed is larger than the preset area 32, that is, the concentration of the oil smoke to be absorbed is too large. When the contour area of ​​the oil smoke to be absorbed is less than or equal to the preset area 32, it means that the current smoke extraction efficiency of the range hood can meet the current oil smoke emission requirements, so the opening and closing angle of the baffle does not need to be adjusted, that is, the state of the baffle can be kept unchanged.

[0117] For example Figure 5 and Figure 6 The baffle structure shown, when the area ratio is 1, before increasing the opening and closing angle of the baffle, may further include:

[0118] It is determined that the opening and closing angle of the baffle 10 is smaller than a first angle threshold.

[0119] Specifically, the first angle threshold may be understood as the maximum angle value at which the baffle 10 can be opened and closed, and illustratively, may be 90 degrees.

[0120] When the area ratio is not 1, the left and right inclination angles of the baffle are adjusted according to the area ratio.

[0121] Specifically, Figure 12 This is another schematic diagram of an image of oil smoke to be absorbed provided by the third embodiment of the present invention, referring to Figure 12The oil fume contour areas in the first region 301 and the second region 302 are unequal, so the area ratio is not 1. This indicates that the oil fume is not directly in front of the range hood. In other words, the negative pressure center is not aligned with the oil fume to be absorbed. This results in wasted negative pressure and affects the absorption effect. Therefore, it is necessary to adjust the left and right inclination angles of the baffle to adjust the negative pressure center of the range hood so that it is aligned with the oil fume center, achieving precise absorption of the oil fume without increasing noise interference. It is important to note that before adjusting the left and right inclination angles, it is necessary to ensure that they have not reached the maximum adjustable angle threshold, which can be 10 degrees, for example.

[0122] For example, when the area ratio is not 1, the ratio of the rotation angles of the first rotating motor 43 and the second rotating motor 44 is controlled to be equal to the area ratio, so that the opening and closing angles of the baffle 10 at both ends in the horizontal direction are different, thereby changing the left and right tilt degrees to adjust its left and right tilt angles.

[0123] Example 4

[0124] Figure 13 This is a flow chart of a range hood control method according to the fourth embodiment of the present invention. This fourth embodiment is optimized based on the above embodiments. In this embodiment, after obtaining the current information about the oil smoke to be absorbed in step S110 and before adjusting the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information about the oil smoke to be absorbed in step S120, the following steps are added:

[0125] It is determined whether the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, and when the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, the speed of the fan in the range hood is increased to increase the exhaust efficiency of the range hood.

[0126] After increasing the speed of the fan in the range hood to increase the efficiency of the range hood, the following are also added:

[0127] Detect the wind speed at the range hood outlet;

[0128] When the wind speed is greater than the preset wind speed, the fan speed is reduced by a preset ratio.

[0129] After adjusting the opening and closing angle and / or the left and right tilt angles of the baffle according to the current information of the oil smoke to be absorbed in step S120, the following steps are added:

[0130] If a shutdown signal is received, the range hood will be turned off after a preset time, and the opening and closing angles and left and right tilt angles of the baffle will be reset to the initial angles.

[0131] like Figure 13 As shown, a range hood control method provided by a fourth embodiment of the present invention includes the following steps:

[0132] S310: Obtain information on the current oil smoke to be absorbed.

[0133] S320, determining whether the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, and when the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, increasing the speed of the fan in the range hood to increase the exhaust efficiency of the range hood.

[0134] Specifically, the preset oil fume information to be absorbed can be understood as information pre-set based on the amount of oil fume that the range hood can currently absorb. When the current oil fume information to be absorbed is greater than the preset oil fume information, it indicates that the range hood's current extraction efficiency is insufficient to meet the current amount of oil fume, and therefore it is necessary to increase the range hood's extraction efficiency, that is, to increase the fan speed of the range hood. Conversely, it can be understood that when the current oil fume information to be absorbed is less than or equal to the preset oil fume information, it indicates that the range hood's extraction efficiency can meet the current oil fume discharge requirements, and therefore it is not necessary to adjust the range hood status, such as the fan speed.

[0135] S330: Detect the wind speed at the range hood outlet.

[0136] Specifically, when the fan speed in the range hood increases to improve the smoking efficiency, it will also increase the noise. Therefore, it is necessary to detect the wind speed at the range hood outlet to judge the size of the noise based on the wind speed. Figure 6 , the wind speed can be detected at the wind speed detection point P of the range hood to obtain a more accurate noise level.

[0137] S340: When the wind speed is greater than a preset wind speed, reduce the fan speed by a preset ratio.

[0138] Specifically, when the wind speed exceeds a preset speed, it indicates excessive noise and requires noise reduction, so the fan speed is reduced by a preset ratio. The preset ratio may be 5% of the fan's rated speed. Conversely, when the wind speed is less than or equal to the preset speed, the noise level is normal and acceptable to the user, and there is no need to adjust the range hood's status, such as the fan speed.

[0139] S350: Adjust the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information of the oil smoke to be absorbed.

[0140] S360: If a shutdown signal is received, the range hood is turned off after a preset time, and the opening and closing angles and the left and right tilt angles of the baffle are reset to the initial angles.

[0141] For example, the preset time can be 2 minutes. When the shutdown signal is received, the smoking is stopped after the preset time, which can ensure that the residual smoke is completely absorbed, further ensuring the smoking effect.

[0142] The technical solution of the embodiment of the present invention can reduce the fan speed to reduce noise when the noise is too loud, and at the same time adjust the air volume by adjusting the opening and closing angle and / or the left and right inclination angle of the baffle, thereby reducing noise while ensuring the smoking effect.

[0143] Example 5

[0144] Figure 14 This is a flowchart of a smoke machine working process provided by the fifth embodiment of the present invention, refer to Figure 14 First, it should be noted that in this embodiment, an AI image recognition monitoring probe, or image sensor 30, is installed on the front of the desktop range hood. This AI image sensor can identify three-dimensional smoke information in a specific area, store this information in the form of a three-dimensional smoke information matrix, and analyze it in real time. A wind speed monitoring point P is set at the range hood outlet. The speed information at this monitoring point reflects the noise level of the range hood. A higher outlet speed indicates greater noise level. The remaining structure can be referred to in the first embodiment above and will not be further described here.

[0145] Reference below Figure 14 The actual working process of the range hood provided in this embodiment is introduced as follows: First, the range hood is turned on and starts working, indicating that the range hood fan has started working; then, the AI ​​image probe is used to identify the three-dimensional smoke information matrix; if the three-dimensional smoke information matrix is ​​not larger than the three-dimensional smoke matrix that the range hood can process, the current state of the range hood is maintained; if the three-dimensional smoke information matrix is ​​larger than the three-dimensional smoke matrix that the range hood can process, that is, the preset three-dimensional smoke information matrix, the fan speed of the desktop range hood is increased, and the wind speed at the range hood outlet is then detected, that is, the wind speed at the monitoring point P at the range hood outlet is obtained; if the wind speed is greater than the preset wind speed, it indicates that the current noise is too loud, and the fan speed is immediately reduced by 5%; if the wind speed is not less than the preset wind speed, the process returns to continue identifying the three-dimensional smoke information matrix through the AI ​​image probe; then, the symmetry ratio R of the matrices on both sides of the smoke is obtained;

[0146] If the symmetry ratio of the flue gas matrix is ​​equal to 1, indicating that the flue gas is symmetrically distributed, the first rotating motor and the second rotating motor are controlled to move synchronously to increase the opening of the baffle. At this time, the AI ​​image probe continues to identify the flue gas three-dimensional information matrix. If the flue gas three-dimensional information matrix is ​​not larger than the three-dimensional flue gas matrix that the range hood can process, the current state of the range hood is maintained. If the flue gas three-dimensional information matrix is ​​larger than the three-dimensional flue gas matrix that the range hood can process, that is, it is also larger than the preset three-dimensional flue gas information matrix, the rotation angle a of the first rotating motor is read. If the rotation angle a is less than 90°, it indicates that the rotating motor can still rotate, and the process returns to continue to obtain the symmetry ratio R of the matrices on both sides of the flue gas and execute the subsequent steps. If the rotation angle a is not less than 90°, the current state of the range hood is maintained.

[0147] If the symmetry ratio R of the flue gas matrix is ​​not equal to 1, it indicates that the negative pressure center is deviated. At this time, read the left and right inclination angles b of the baffle. If the absolute value of the inclination angle b is less than 10°, configure the two rotating motors, i.e., the first rotating motor and the second rotating motor, according to the ratio R, and adjust the left and right inclination angles of the baffle. At this time, continue to identify the flue gas three-dimensional information matrix through the AI ​​image probe. If the flue gas three-dimensional information matrix is ​​not larger than the three-dimensional flue gas matrix that the range hood can process, maintain the current state of the range hood; if the flue gas three-dimensional information matrix is ​​larger than the three-dimensional flue gas matrix that the range hood can process, that is, it is also larger than the preset flue gas three-dimensional information matrix, return to continue reading the left and right inclination angles b of the baffle, and execute subsequent steps; if the absolute value of the inclination angle b is not less than 10°, maintain the current state of the range hood.

[0148] While maintaining the current state of the range hood, the shutdown signal is monitored in real time; if the shutdown signal is received, the range hood is shut down after a delay of 2 minutes, and the rotation angles of the first rotating motor and the second rotating motor are reset.

[0149] Example 6

[0150] Figure 15 This is a structural diagram of a range hood control device provided in Example 6 of the present invention. The device can be applied to range hood control situations, wherein the device can be implemented by software and / or hardware and is generally integrated on the range hood control device.

[0151] like Figure 15 As shown, the device includes:

[0152] The oil fume information acquisition module 410 is used to acquire the current oil fume information to be absorbed;

[0153] The baffle adjustment module 420 is used to adjust the opening and closing angle and / or the left and right tilt angle of the baffle according to the current information of the oil smoke to be absorbed.

[0154] In this embodiment, the device first obtains the current amount of oil smoke to be absorbed through the oil smoke information acquisition module. Then, the baffle adjustment module adjusts the opening and closing angle and / or left and right tilt of the baffle based on the current amount of oil smoke to be absorbed. This technical solution solves the problem that when existing range hoods cannot absorb the current amount of smoke, increasing the fan speed will increase noise and affect the user experience; and the negative pressure center position deviates from the oil smoke, which also causes negative pressure waste. By adjusting the opening and closing angle and / or left and right tilt of the baffle, the range hood's intake volume and negative pressure position are adjusted, achieving reasonable oil smoke absorption with low noise.

[0155] like Figure 4 As shown, the range hood may be provided with an image sensor 30. Based on this, the above-mentioned module for acquiring information of oil smoke to be absorbed 410 may include:

[0156] An image acquisition unit, configured to acquire an image of the oil smoke to be absorbed using an image sensor;

[0157] A contour recognition unit, used for recognizing the contour of the oil smoke to be absorbed in the image of the oil smoke to be absorbed;

[0158] At this time, the baffle adjustment module 420 is specifically used to:

[0159] According to the contour of the oil smoke to be absorbed, the opening and closing angle and / or the left and right inclination angle of the baffle are adjusted.

[0160] Furthermore, the device may also include:

[0161] The area determination module is used to determine whether the contour area of ​​the current oil smoke to be absorbed is larger than the preset contour area.

[0162] Optionally, the current image of the oil fume to be absorbed includes a first region and a second region sequentially arranged in the horizontal direction; the first region and the second region have equal areas and are symmetrical about the midline of the current image of the oil fume to be absorbed in the vertical direction;

[0163] Based on this, the baffle adjustment module 420 may specifically include:

[0164] a smoke contour area ratio determination unit, configured to obtain an area ratio of the smoke contour area in the first region of the current smoke image to be absorbed to the smoke contour area in the second region;

[0165] The adjustment unit is used to adjust the opening and closing angle and / or the left and right inclination angle of the baffle according to the area ratio.

[0166] Furthermore, the adjustment unit may be specifically configured to:

[0167] When the area ratio is 1, the opening and closing angle of the baffle is increased to increase the smoking efficiency of the smoke inlet of the range hood.

[0168] Furthermore, the device may further include a first angle determination module, configured to determine whether the opening and closing angle of the baffle is smaller than a first angle threshold.

[0169] like Figure 5 and Figure 6 In the illustrated range hood structure, optionally, the range hood further includes a first U-shaped connecting portion 41, a second U-shaped connecting portion 42, a first rotating motor 43, a second rotating motor 44 and a connecting frame 45;

[0170] The first U-shaped connecting portion 41 and the second U-shaped connecting portion 42 are arranged opposite to each other in the horizontal direction; one end of the first U-shaped connecting portion 41 is fixedly connected to the top of the baffle 10, and the other end is transmission-connected to the rotating shaft of the first rotating motor 43; one end of the second U-shaped connecting portion 42 is fixedly connected to the top of the baffle 10, and the other end is transmission-connected to the rotating shaft of the second rotating motor 44;

[0171] The connecting frame 45 is fixedly connected to the top of the smoke inlet 20. One end of the connecting frame 45 is fixedly connected to the inner side of the first rotating motor 43, and the other end is fixedly connected to the inner side of the second rotating motor 44.

[0172] The first rotating motor 43 and the second rotating motor 44 are configured to rotate synchronously or respectively at proportional rotation angles to adjust the opening and closing angle of the baffle 10 relative to the smoke inlet 20 and / or the left and right inclination angle relative to the horizontal plane through the first U-shaped connecting portion 41 and the second U-shaped connecting portion 42.

[0173] Based on this, the adjustment unit can be specifically used to: when the area ratio is 1, control the first rotating motor and the second rotating motor to rotate synchronously to increase the opening and closing angle of the baffle.

[0174] Furthermore, the adjustment unit can be specifically configured to adjust the left and right inclination angles of the baffle according to the area ratio when the area ratio is not 1.

[0175] Furthermore, the device may further include a second angle determination module, configured to determine whether the absolute value of the left and right inclination angles of the baffle is less than a second angle threshold.

[0176] Furthermore, for Figure 5 and Figure 6 In the range hood structure shown, the adjustment unit can be specifically used to: when the area ratio is not 1, control the ratio of the rotation angles of the first rotating motor and the second rotating motor to be equal to the area ratio, so as to adjust the left and right inclination angles of the baffle.

[0177] Optionally, the device further comprises:

[0178] The fan speed increasing module is used to determine whether the current information of oil smoke to be absorbed is greater than the preset information of oil smoke to be absorbed after obtaining the current information of oil smoke to be absorbed and before adjusting the opening and closing angle and / or the left and right inclination angle of the baffle according to the current information of oil smoke to be absorbed, and to increase the speed of the fan in the range hood to increase the exhaust efficiency of the range hood when the current information of oil smoke to be absorbed is greater than the preset information of oil smoke to be absorbed.

[0179] Optionally, the device further comprises:

[0180] The wind speed detection module is used to detect the wind speed at the range hood outlet after increasing the speed of the fan in the range hood to improve the smoke extraction efficiency of the range hood;

[0181] The fan speed reduction module is used to reduce the fan speed by a preset ratio when the wind speed is greater than a preset wind speed.

[0182] Optionally, the device further comprises:

[0183] The shutdown module is used to adjust the opening and closing angle and / or left and right tilt angle of the baffle according to the current oil smoke information to be absorbed. If a shutdown signal is received, the range hood will be turned off after a preset time and the opening and closing angle and left and right tilt angle of the baffle will be reset to the initial angle.

[0184] The above-mentioned range hood control device can execute the range hood control method provided by any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0185] Example 6

[0186] Figure 16 This is a structural diagram of a range hood provided by Example 6 of the present invention. Figure 16 As shown, the range hood provided by the sixth embodiment of the present invention includes: one or more processors 51 and a storage device 52; the processor 51 in the range hood can be one or more, Figure 16 A processor 51 is taken as an example; the storage device 52 is used to store one or more programs; the one or more programs are executed by one or more processors 51, so that one or more processors 51 implement the control method of the range hood as any one of the embodiments of the present invention.

[0187] The range hood may further include an input device 53 and an output device 54 .

[0188] The processor 51, storage device 52, input device 53 and output device 54 in the range hood can be connected via a bus or other means. Figure 16 The bus connection is taken as an example.

[0189] The storage device 52 in the range hood serves as a computer-readable storage medium and can be used to store one or more programs. These programs can be software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the range hood control methods provided in Embodiments 1 or 2 of the present invention. The processor 51 executes the software programs, instructions, and modules stored in the storage device 52 to execute various functional applications and data processing of the range hood, thereby implementing the range hood control methods of the aforementioned method embodiments.

[0190] The storage device 52 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the range hood. Furthermore, the storage device 52 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some examples, the storage device 52 may further include memory located remotely from the processor 51, and such remote memory may be connected to the range hood via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0191] The input device 53 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the range hood. The output device 54 may include a display device such as a display screen.

[0192] Furthermore, when one or more programs included in the range hood are executed by one or more processors 51, the programs perform the following operations:

[0193] Get the current oil smoke information to be absorbed;

[0194] According to the current information of the oil smoke to be absorbed, the opening and closing angle and / or the left and right inclination angle of the baffle are adjusted.

[0195] Example 7

[0196] A seventh embodiment of the present invention provides a computer-readable storage medium storing a computer program. When executed by a processor, the program is configured to execute a range hood control method, comprising: obtaining information about current oil fume to be absorbed; and adjusting the opening and closing angle and / or the left and right tilt angle of the baffle based on the current oil fume to be absorbed. Optionally, when executed by a processor, the program can also be configured to execute the range hood control method provided by any embodiment of the present invention.

[0197] The computer storage medium of the embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (AM), a read-only memory (OM), an erasable programmable read-only memory (EPOM), a flash memory, an optical fiber, a portable CD-OM, an optical storage device, a magnetic storage device, or any suitable combination thereof. The computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device.

[0198] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such a propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0199] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination thereof.

[0200] Computer program code for performing the operations of the present invention may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0201] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood, characterized in that: A baffle (10) is arranged outside the smoke inlet (20) of the range hood, the top of the baffle (10) is rotatably connected to the top of the smoke inlet (20), and the opening and closing angle of the baffle (10) relative to the smoke inlet (20) and the left and right inclination angle relative to the horizontal plane are adjustable.

2. The range hood according to claim 1, characterized in that: The range hood further comprises an image sensor (30), wherein the image sensor (30) and the smoke inlet (20) are located on the same side of the range hood, and the image sensor (30) is located at the center of the range hood in the horizontal direction; The image sensor (30) is used to obtain the current image of the oil smoke to be absorbed.

3. The range hood according to claim 1, characterized in that: The range hood further comprises a first U-shaped connecting portion (41), a second U-shaped connecting portion (42), a first rotating motor (43), a second rotating motor (44) and a connecting frame (45); The first U-shaped connecting portion (41) and the second U-shaped connecting portion (42) are arranged opposite to each other in a horizontal direction; one end of the first U-shaped connecting portion (41) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the first rotating motor (43); one end of the second U-shaped connecting portion (42) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the second rotating motor (44); The connecting frame (45) is fixedly connected to the top of the smoke inlet (20), one end of the connecting frame (45) in the extending direction is fixedly connected to the inner side of the first rotating motor (43), and the other end is fixedly connected to the inner side of the second rotating motor (44); The first rotating motor (43) and the second rotating motor (44) are configured to rotate synchronously or respectively at proportional rotation angles, so as to adjust the opening and closing angle of the baffle (10) relative to the smoke inlet (20) and / or the left and right inclination angle relative to the horizontal plane through the first U-shaped connecting portion (41) and the second U-shaped connecting portion (42).

4. A method for controlling a range hood, characterized in that: A baffle (10) is arranged outside the smoke inlet (20) of the range hood, the top of the baffle (10) is rotatably connected to the top of the smoke inlet (20), and the opening and closing angle of the baffle (10) relative to the smoke inlet (20) and the left and right inclination angle relative to the horizontal plane are adjustable; The control method includes: Get the current oil smoke information to be absorbed; The opening and closing angle and / or the left and right inclination angle of the baffle (10) are adjusted according to the current oil smoke information to be absorbed.

5. The control method according to claim 4, characterized in that: The range hood comprises an image sensor (30), the image sensor (30) and the smoke inlet (20) are located on the same side of the range hood, and the image sensor (30) is located at the center of the range hood in a horizontal direction; The obtaining of the current oil smoke information to be absorbed includes: Using the image sensor (30), acquiring the current image of the oil smoke to be absorbed; In the current oil smoke image to be absorbed, identifying the outline of the current oil smoke to be absorbed; The adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the current oil smoke information to be absorbed comprises: The opening and closing angle and / or the left and right inclination angle of the baffle (10) are adjusted according to the profile of the oil smoke to be currently absorbed.

6. The control method according to claim 5, characterized in that: Before adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the contour of the current oil smoke to be absorbed, the method further comprises: It is determined that the contour area of ​​the current oil smoke to be absorbed is greater than a preset contour area.

7. The control method according to claim 6, characterized in that: The current oil fume image to be absorbed comprises a first region (301) and a second region (302) arranged in sequence along the horizontal direction; the first region (301) and the second region (302) are equal in area and symmetrical about a midline of the current oil fume image to be absorbed in the vertical direction; The adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the contour of the oil smoke to be currently absorbed comprises: Acquire the area ratio of the oil fume contour area in the first region (301) of the current oil fume image to be absorbed to the area ratio of the oil fume contour area in the second region (301); The opening and closing angle and / or the left and right inclination angle of the baffle (10) are adjusted according to the area ratio.

8. The control method according to claim 7, characterized in that: The adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the area ratio comprises: When the area ratio is 1, the opening and closing angle of the baffle (10) is increased to increase the smoking efficiency of the smoke inlet (20) of the range hood.

9. The control method according to claim 8, characterized in that: When the area ratio is 1, before increasing the opening and closing angle of the baffle (10), the method further comprises: It is determined that the opening and closing angle of the baffle (10) is less than a first angle threshold.

10. The control method according to claim 8, characterized in that: The smoke hood further comprises a first U-shaped connecting portion (41), a second U-shaped connecting portion (42), a first rotating motor (43), a second rotating motor (44) and a connecting frame (45); the first U-shaped connecting portion (41) and the second U-shaped connecting portion (42) are arranged opposite to each other in a horizontal direction; one end of the first U-shaped connecting portion (41) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the first rotating motor (43); one end of the second U-shaped connecting portion (42) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the second rotating motor (44); the connecting frame (45) is fixedly connected to the top of the smoke inlet (20), one end of the connecting frame (45) in the extending direction is fixedly connected to the inner side of the first rotating motor (43), and the other end is fixedly connected to the inner side of the second rotating motor (44); when the area ratio is 1, increasing the opening and closing angle of the baffle (10) comprises: When the area ratio is 1, the first rotating motor (43) and the second rotating motor (44) are controlled to rotate synchronously to increase the opening and closing angle of the baffle (10).

11. The control method according to claim 7, characterized in that: The adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the area ratio comprises: When the area ratio is not 1, the left and right inclination angles of the baffle (10) are adjusted according to the area ratio.

12. The control method according to claim 11, characterized in that: When the area ratio is not 1, before adjusting the left and right inclination angles of the baffle (10) according to the area ratio, the method further comprises: It is determined that the absolute value of the left and right inclination angles of the baffle (10) is less than a second angle threshold.

13. The control method according to claim 11, characterized in that: The smoke hood further comprises a first U-shaped connecting portion (41), a second U-shaped connecting portion (42), a first rotating motor (43), a second rotating motor (44) and a connecting frame (45); the first U-shaped connecting portion (41) and the second U-shaped connecting portion (42) are arranged opposite to each other in a horizontal direction; one end of the first U-shaped connecting portion (41) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the first rotating motor (43); one end of the second U-shaped connecting portion (42) is fixedly connected to the top of the baffle (10), and the other end is drivingly connected to the rotating shaft of the second rotating motor (44); the connecting frame (45) is fixedly connected to the top of the smoke inlet (20), one end of the connecting frame (45) in the extending direction is fixedly connected to the inner side of the first rotating motor (43), and the other end is fixedly connected to the inner side of the second rotating motor (44); When the area ratio is not 1, adjusting the left and right inclination angles of the baffle (10) according to the area ratio comprises: When the area ratio is not 1, the ratio of the rotation angles of the first rotating motor (43) and the second rotating motor (44) is controlled to be equal to the area ratio, so as to adjust the left and right inclination angles of the baffle (10).

14. The control method according to claim 4, characterized in that: After obtaining the current information of the oil fume to be absorbed, and before adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the current information of the oil fume to be absorbed, the method further comprises: It is determined whether the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, and when the current oil fume information to be absorbed is greater than the preset oil fume information to be absorbed, the rotation speed of the fan in the range hood is increased to increase the smoke extraction efficiency of the range hood.

15. The control method according to claim 14, characterized in that: After increasing the rotation speed of the fan in the range hood to increase the smoking efficiency of the range hood, the method further includes: Detecting the wind speed at the air outlet of the range hood; When the wind speed is greater than a preset wind speed, the fan speed is reduced by a preset ratio.

16. The control method according to claim 4, characterized in that: After adjusting the opening and closing angle and / or the left and right inclination angle of the baffle (10) according to the current oil fume information to be absorbed, the method further comprises: If a shutdown signal is received, the range hood is shut down after a preset time, and the opening and closing angles and the left and right tilt angles of the baffle (10) are reset to the initial angles.

Images