A smoke machine and a control method thereof

Abstract

The smoke machine and the control method thereof provided by the embodiment of the present application are characterized in that: a wind baffle is arranged in an air inlet channel of the smoke machine, and the area of the wind baffle is adjustable; the control method is characterized in that: firstly, current oil fume information to be absorbed is acquired; then, according to the current oil fume information to be absorbed, the area of the wind baffle is adjusted to adjust the air inlet area of the air inlet channel; wherein, the air inlet area of the air inlet channel is inversely proportional to the air inlet efficiency. By using the above method, the problem that the existing smoke machine brings about a large noise when increasing the power of the fan to adjust the air inlet efficiency and affects the user experience is solved; the air inlet area of the air inlet channel is adjusted by adjusting the area of the wind baffle, so that the air inlet efficiency is adjusted, and the noise interference is not brought about, and the user experience is improved.

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] A desktop range hood is an appliance used to absorb and remove fumes and odors produced during cooking. Compared to traditional range hoods that are fixed above the kitchen stove, desktop range hoods are more flexible in their use, and can be used in various spaces such as living room dining and outdoor dining. They can effectively filter and purify the air, maintaining a clean and comfortable dining environment. Therefore, they have higher requirements for fume extraction efficiency and noise reduction.

[0003] When faced with large amounts of cooking fumes, existing desktop range hoods often increase the fan speed to improve smoke extraction efficiency, which results in significant noise and negatively impacts the user experience. Summary of the Invention

[0004] This invention provides a range hood and its control method, which adjusts the smoke extraction efficiency of the range hood by adjusting the unfolded area of ​​the baffle plate in the air inlet channel, thereby enhancing the smoke extraction effect while ensuring that the noise level is kept low.

[0005] In a first aspect, embodiments of the present invention provide a range hood, which includes an air inlet channel;

[0006] A baffle plate is installed in the air intake channel; the unfolded area of ​​the baffle plate is adjustable.

[0007] Optionally, the range hood also includes an image sensor; the image sensor is located on the outside of the air inlet of the range hood, and the image sensor is located at the center of the range hood in the horizontal direction.

[0008] Optionally, the baffle plate includes a rotating motor, a base plate, a multi-layer nested plate, and a top plate stacked sequentially along a first direction; the first direction is the air intake direction; the base plate, the nested plate, and the top plate all have openings and their projections overlap in the first direction at the unfolding front edge;

[0009] The rotating motor is used to drive any two adjacent plates in the stacked bottom plate, multi-layer nested plate and top plate to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector.

[0010] Optionally, a limiting protrusion is provided at the edge of the surface of the top plate and the multi-layer nested plate facing the bottom plate, and a limiting groove is provided at the edge of the multi-layer nested plate and the bottom plate to allow the limiting protrusion to move in the rotation direction. The limiting protrusion is placed in the limiting groove of the next plate layer.

[0011] The motor shaft of the rotating motor is equipped with a transmission protrusion, and the center of the top plate is equipped with a transmission groove. The transmission protrusion of the motor shaft is connected to the transmission groove of the top plate. The rotating motor drives the top plate to rotate, which in turn drives the limiting protrusion of the top plate to rotate, so that the limiting protrusion rotates to the limit position of the limiting groove of the next plate layer, thereby driving the next plate layer to rotate.

[0012] Optionally, the base plate includes a limiting circular rail, a nested plate motion limiting groove, a motor fixing hole, and a motor shaft through hole;

[0013] The edges of both the top plate and the nested plate are embedded in the limiting circular rail;

[0014] The limiting protrusion on the nested plate near the base plate is placed in the nested plate movement limiting groove on the base plate;

[0015] The motor shaft of the rotating motor passes through the motor shaft through hole, and the rotating motor is fixed to the base plate through the motor mounting hole.

[0016] Optionally, the top plate also includes a motor shaft mating recess and a rotation limiting protrusion;

[0017] The transmission groove is set in the mating recess of the motor shaft. The end of the motor shaft of the rotating motor extends into the transmission groove to make a transmission connection with the mating recess of the motor shaft.

[0018] The rotation limit protrusion is placed in the limit groove on the nesting plate near the top plate.

[0019] Secondly, embodiments of the present invention provide a control method for a range hood, wherein a baffle plate is provided in the air inlet channel of the range hood, and the unfolded area of ​​the baffle plate is adjustable;

[0020] The control method includes:

[0021] Obtain information on the current amount of oily fumes to be absorbed;

[0022] Based on the current information about the oil fumes to be absorbed, adjust the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air intake channel; the air intake area and air intake efficiency of the air intake channel are inversely proportional.

[0023] Optionally, the range hood includes an image sensor, which is located outside the air inlet of the range hood and at the center of the range hood in the horizontal direction;

[0024] Obtain information on the current oil fumes to be absorbed, including:

[0025] Using an image sensor, an image of the current oil fume to be absorbed is acquired;

[0026] In the current image of the oil fume to be absorbed, identify the outline of the oil fume to be absorbed;

[0027] Based on the current information regarding the amount of oil fumes to be absorbed, adjust the unfolded area of ​​the range hood's baffle plate, including:

[0028] Adjust the unfolded area of ​​the range hood's baffle plate according to the outline area of ​​the oil fumes to be absorbed.

[0029] Optionally, before adjusting the unfolded area of ​​the range hood baffle plate according to the contour area of ​​the current oil fumes to be absorbed, the method further includes:

[0030] The outline area of ​​the oil fume to be absorbed is determined to be greater than the preset area.

[0031] Optionally, the baffle plate includes a rotating motor, a base plate, a multi-layer nested plate, and a top plate stacked sequentially along a first direction; the first direction is the air intake direction; the base plate, the nested plate, and the top plate all have openings and their projections overlap in the first direction at the unfolding front edge;

[0032] The rotating motor is used to drive any two adjacent plates in the stacked bottom plate, multi-layer nested plate and top plate to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector.

[0033] Based on the current information regarding the amount of oil fumes to be absorbed, adjust the unfolded area of ​​the range hood's baffle plate, including:

[0034] Based on the current information about the oil fumes to be absorbed, the drive motor rotates at preset angle steps, and the unfolded area of ​​the baffle plate is adjusted at preset area steps.

[0035] Optionally, before driving the rotary motor to rotate in preset angular steps and adjusting the unfolded area of ​​the baffle plate in preset area steps based on the current information of the oil fumes to be absorbed, the method further includes:

[0036] Determine that the current rotation angle of the rotating motor is less than the angle threshold.

[0037] Optionally, after obtaining the current information on the fumes to be absorbed, and before adjusting the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air intake channel, the method further includes:

[0038] Determine whether the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed. If the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed, increase the speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood.

[0039] Optionally, after increasing the rotational speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood, the method further includes:

[0040] Detect the airflow speed at the exhaust vent of the range hood;

[0041] When the wind speed is greater than the preset wind speed, the fan speed is reduced by a preset ratio.

[0042] This invention provides a range hood and its control method. The range hood has a baffle plate in its air inlet channel, and the baffle plate's unfolded area is adjustable. The control method first acquires information about the current amount of oil fumes to be absorbed; then, based on this information, it adjusts the unfolded area of ​​the baffle plate to adjust the air inlet area of ​​the air inlet channel. The air inlet area and air intake efficiency are inversely proportional. This method solves the problem that increasing the fan power in existing range hoods to adjust suction efficiency leads to excessive noise and negatively impacts user experience. By adjusting the unfolded area of ​​the baffle plate to regulate the air inlet area of ​​the air inlet channel, the air intake efficiency is adjusted without causing noise interference, thus improving the user experience. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a range hood provided in Embodiment 1 of the present invention;

[0044] Figure 2 This is a schematic diagram of another type of range hood provided in Embodiment 1 of the present invention;

[0045] Figure 3 This is a schematic diagram of a windshield structure provided in Embodiment 1 of the present invention;

[0046] Figure 4 This is a schematic diagram of the internal structure of a windshield plate according to Embodiment 1 of the present invention;

[0047] Figure 5 This is a partial structural diagram of the bottom plate of a windshield plate provided in Embodiment 1 of the present invention;

[0048] Figure 6 This is a partial structural diagram of the top plate of a windshield plate provided in Embodiment 1 of the present invention;

[0049] Figure 7 This is a flowchart illustrating a control method for a range hood provided in Embodiment 2 of the present invention;

[0050] Figure 8 This is a flowchart illustrating a control method for a range hood provided in Embodiment 3 of the present invention;

[0051] Figure 9 This is a flowchart of the working process of a range hood provided in Embodiment 4 of the present invention;

[0052] Figure 10 This is a schematic diagram of the structure of a control device for a smoke hood provided in Embodiment 5 of the present invention;

[0053] Figure 11 This is a schematic diagram of the structure of a range hood provided in Embodiment Six of the present invention;

[0054] Among them, 10 is the air inlet channel;

[0055] 20-Wind deflector, 21-Rotating motor, 211-Transmission protrusion, 212-Motor shaft, 213-Bolt hole, 22-Base plate, 221-Limiting ring rail, 222-Nested plate movement limiting groove, 223-Motor fixing hole, 224-Motor shaft through hole; 23-Nested plate, 24-Top plate, 241-Transmission groove, 242-Motor shaft mating recess, 243-Rotation limiting protrusion, 25-Limiting protrusion, 26-Limiting groove;

[0056] 30 - Image sensor; 31 - Contour area of ​​the oil fume to be absorbed; 32 - Preset contour area;

[0057] 410 - Module for acquiring information on oily fumes to be absorbed; 420 - Area adjustment module;

[0058] 51-Processor, 52-Storage device, 53-Input device, 54-Output device. Detailed Implementation

[0059] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0060] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc. Moreover, embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0061] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0062] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish the corresponding contents and are not used to limit the order or interdependence.

[0063] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0064] Example 1

[0065] Figure 1 This is a structural schematic diagram of a range hood provided in Embodiment 1 of the present invention, for reference. Figure 1 The smoke hood includes an air inlet channel 10; a baffle plate 20 is provided in the air inlet channel 10; the unfolded area of ​​the baffle plate 20 is adjustable.

[0066] The air intake area of ​​the air intake channel 10 determines the air intake efficiency. For example, when there is a lot of oily smoke to be absorbed, it is necessary to increase the smoke extraction efficiency. Therefore, the unfolding area of ​​the baffle plate 20 can be adjusted to make the baffle plate 20 unfold, thereby reducing the air intake area of ​​the air intake channel 10, thereby increasing the intake air pressure and increasing the suction efficiency to absorb the current oily smoke.

[0067] The range hood provided in Embodiment 1 of the present invention features a baffle plate in its air inlet channel. The unfolded area of ​​the baffle plate can be adjusted according to the concentration of the fumes to be absorbed, making the air inlet area and air intake efficiency inversely proportional. Thus, the above-mentioned range hood solves the problem that increasing the fan power when adjusting the suction efficiency of existing range hoods leads to excessive noise and affects the user experience. By adjusting the unfolded area of ​​the baffle plate to adjust the air inlet area of ​​the air inlet channel, the air intake efficiency can be adjusted without causing noise interference, thereby improving the user experience.

[0068] Figure 2 This is a schematic diagram of another type of range hood provided in Embodiment 1 of the present invention, for reference. Figure 2 Based on the above embodiments, optionally, the range hood also includes an image sensor 30; the image sensor 30 is disposed on the outside of the air inlet of the range hood, and the image sensor 30 is located at the center of the range hood in the horizontal direction.

[0069] The image sensor 30 is located at the center of the range hood and is used to accurately acquire information about the cooking fumes. The image captured by the image sensor 30 can identify the outline of the cooking fumes to be absorbed, thereby determining the concentration of the fumes. This information is then used to adjust the unfolded area of ​​the baffle plate 20, changing the range hood's smoke extraction efficiency to suit the current concentration of cooking fumes.

[0070] Figure 3 This is a schematic diagram of a windshield structure provided in Embodiment 1 of the present invention, for reference. Figure 3 Specifically, the wind deflector 20 includes a rotating motor 21, a bottom plate 22, a multi-layer nested plate 23, and a top plate 24 stacked sequentially along a first direction; the first direction is the air suction direction; the bottom plate 22, the nested plate 23, and the top plate 24 all have openings and their projections overlap in the first direction at the front edge of the unfolding process.

[0071] The rotating motor 21 is used to drive any two adjacent plates in the stacked bottom plate 22, multi-layer nested plate 23 and top plate 24 to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector 20.

[0072] Figure 4 This is a schematic diagram of the internal structure of a windshield disc according to Embodiment 1 of the present invention, for reference. Figure 3 and Figure 4 Furthermore, the top plate 24 and the multi-layer nested plate 23 are provided with limiting protrusions 25 on the edge of the side surface facing the bottom plate 22, and the multi-layer nested plate 23 and the bottom plate 22 are provided with limiting grooves 26 for the limiting protrusions 25 to move in the rotation direction. The limiting protrusions 25 are placed in the limiting grooves 26 of the next plate layer.

[0073] The motor shaft 212 of the rotating motor 21 is provided with a transmission protrusion 211, and the center of the top plate 24 is provided with a transmission groove 241. The transmission protrusion 211 of the motor shaft 212 is connected to the transmission groove 241 of the top plate 24. The rotating motor 21 drives the top plate 24 to rotate, thereby driving the limiting protrusion 25 of the top plate 24 to rotate, so that the limiting protrusion 25 rotates to the limit position of the limiting groove 26 of the next plate layer, thereby driving the next plate layer to rotate.

[0074] Figure 5 This is a partial structural diagram of the bottom plate of a windshield plate according to Embodiment 1 of the present invention, for reference. Figures 3-5 The base plate 22 includes a limiting ring rail 221, a nested plate movement limiting groove 222, a motor fixing hole 223, and a motor shaft through hole 224; the edges of the top plate 24 and the nested plate 23 are both embedded in the limiting ring rail 221; the limiting protrusion 25 on the nested plate 23 near the base plate 22 is placed in the nested plate movement limiting groove 222 on the base plate 22; the motor shaft 212 of the rotating motor 21 passes through the motor shaft through hole 224, and the rotating motor 21 is fixed to the base plate 22 through the motor fixing hole 223. Specifically, referring to 3, the rotating motor 21 may also be provided with bolt holes 213, and the bolt holes 213 and the motor fixing holes 223 are fixed by bolts.

[0075] Figure 6 This is a partial structural diagram of the top plate of a windshield plate according to Embodiment 1 of the present invention, for reference. Figures 3-6 The top plate 24 also includes a motor shaft mating recess 242 and a rotation limiting protrusion 243; the transmission groove 241 is provided in the motor shaft mating recess 242, and the end of the motor shaft 212 of the rotating motor 21 extends into the transmission groove 241 to be connected with the motor shaft mating recess 242 for transmission; the rotation limiting protrusion 243 is placed in the limiting groove 26 on the nested plate 23 near the top plate 24.

[0076] Specifically, the edge of the top plate 24 mates with the limiting ring rail 221 to ensure its stable rotational freedom. Similarly, the edges of each nested plate 23 mate with the corresponding limiting ring rail 221. Each nested plate 23 is provided with a limiting protrusion 25 and a limiting groove 26. The limiting protrusion 25 and the limiting groove 26 mate with the limiting groove 26 and the limiting protrusion 25 on the adjacent nested plate 23, respectively, to ensure a tight fit between the top plate 24, the nested plate 23, and the bottom plate 22.

[0077] Example 2

[0078] Figure 7 This is a flowchart illustrating a control method for a range hood provided in Embodiment 2 of the present invention. This method is applicable to the control of range hoods and can be executed by a control device for the range hood. This device can be implemented by software and / or hardware and is generally integrated into the control equipment of the range hood.

[0079] like Figure 7 As shown, the second embodiment of the present invention provides a control method for a range hood, which includes the following steps:

[0080] S110. Obtain information on the current oil fume to be absorbed.

[0081] For details, please refer to [link / reference]. Figure 1 The air inlet channel 10 of the range hood is equipped with a baffle plate 20. The unfolded area of ​​the baffle plate 20 is adjustable. Therefore, it is necessary to obtain the current information of the oil fumes to be absorbed so as to adjust the unfolded area of ​​the baffle plate 20 according to the amount of oil fumes to be absorbed, thereby adjusting the suction efficiency.

[0082] S120. Based on the current information on the oil fumes to be absorbed, adjust the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air intake channel; wherein, the air intake area of ​​the air intake channel is inversely proportional to the air intake efficiency.

[0083] Specifically, since the air intake area of ​​the air intake channel 10 determines the air intake efficiency, for example, when there is a lot of oily smoke to be absorbed, it is necessary to increase the smoke extraction efficiency. Therefore, the unfolding area of ​​the baffle plate 20 can be adjusted so that the baffle plate 20 unfolds, thereby reducing the air intake area of ​​the air intake channel 10, thereby increasing the intake air pressure and increasing the suction efficiency to absorb the current oily smoke.

[0084] Embodiment 2 of this invention provides a control method for a range hood. The range hood's air inlet channel is equipped with a baffle plate, the unfolded area of ​​which is adjustable. The method first acquires information about the current amount of oil fumes to be absorbed; then, based on this information, it adjusts the unfolded area of ​​the baffle plate to adjust the air inlet area of ​​the air inlet channel. The air inlet area and air intake efficiency are inversely proportional. This method solves the problem that increasing the fan power in existing range hoods to adjust suction efficiency leads to excessive noise, negatively impacting user experience. By adjusting the unfolded area of ​​the baffle plate to regulate the air inlet area of ​​the air inlet channel, the air intake efficiency is adjusted without causing noise interference, thus improving the user experience.

[0085] Based on the above embodiments, modified embodiments of the above embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in the modified embodiments.

[0086] In one embodiment, after obtaining the current information on the oil fumes to be absorbed in step S110, and before adjusting the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air intake channel in step S120, the method further includes:

[0087] Determine whether the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed. If the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed, increase the speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood.

[0088] Specifically, the preset information on the amount of oil fumes to be absorbed can be understood as the information on the amount of oil fumes that the range hood can currently absorb. When the current information on the amount of oil fumes to be absorbed is greater than the preset information on the amount of oil fumes to be absorbed, it means that the range hood cannot meet the current oil fume demand. Therefore, it is necessary to increase the speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood.

[0089] In addition to increasing the speed of the fan in the range hood to improve its smoke extraction efficiency, the following was also added:

[0090] Detect the airflow speed at the exhaust vent of the range hood;

[0091] When the wind speed is greater than the preset wind speed, the fan speed is reduced by a preset ratio.

[0092] Specifically, the air velocity at the range hood's outlet reflects the noise level of the range hood. Increasing the air velocity to improve smoke extraction efficiency will increase noise levels. Therefore, it's necessary to monitor the air velocity at the outlet. When the air velocity exceeds the preset speed, the noise level is considered high, and the fan speed needs to be reduced. (Reference) Figure 2 The wind speed of the range hood can be measured at the wind speed monitoring point P; for example, the preset ratio can be 5% of the rated speed of the wind speed.

[0093] Example 3

[0094] Figure 8 This is a flowchart illustrating a control method for a range hood according to Embodiment 3 of the present invention. Embodiment 3 is an optimization based on the above embodiments. In this embodiment, step S110, obtaining the current information on the oil fumes to be absorbed, is specified as follows:

[0095] Using an image sensor, an image of the current oil fume to be absorbed is acquired;

[0096] In the current image of the oil fume to be absorbed, identify the outline of the oil fume to be absorbed;

[0097] Step S120 above, adjusting the unfolded area of ​​the range hood's baffle plate based on the current information of the oil fumes to be absorbed, is specifically as follows:

[0098] Adjust the unfolded area of ​​the range hood's baffle plate according to the outline area of ​​the oil fumes to be absorbed.

[0099] Before adjusting the unfolded area of ​​the range hood's baffle plate based on the outline area of ​​the oil fumes to be absorbed, the following was added:

[0100] The outline area of ​​the oil fume to be absorbed is determined to be greater than the preset area.

[0101] For details not covered in this embodiment, please refer to the above embodiments.

[0102] like Figure 8 As shown, the control method for a range hood provided in Embodiment 3 of the present invention includes the following steps:

[0103] S210. Using an image sensor, acquire an image of the current oil fume to be absorbed.

[0104] For details, please refer to [link / reference]. Figure 2 The range hood includes an image sensor 30, which is located on the outside of the air inlet of the range hood and at the center of the range hood in the horizontal direction. That is, the image sensor 30 is located at the center of the range hood, thereby enabling accurate acquisition of oil fume information.

[0105] S220. In the current image of the oil fume to be absorbed, identify the outline of the current oil fume to be absorbed.

[0106] S230. Determine that the outline area of ​​the current oil fume to be absorbed is greater than the preset area.

[0107] The preset area can be understood as the outline area of ​​the range hood that can currently absorb the amount of cooking fumes; reference Figure 2 If the outline area 31 of the current oil fume to be absorbed is greater than the preset outline area 32, it indicates that the amount of oil fume to be absorbed exceeds the amount of oil fume that the range hood can absorb at this time, and adjustment is required.

[0108] S240. Adjust the unfolded area of ​​the range hood baffle plate according to the outline area of ​​the current oil fumes to be absorbed.

[0109] For example, if the outline area of ​​the current oil fume to be absorbed is larger than the preset area, it is determined that there is a lot of oil fume to be absorbed and the current smoke extraction capacity of the range hood is not sufficient. Therefore, it is necessary to adjust the unfolded area of ​​the range hood baffle plate 20. The area of ​​the baffle plate 20 is increased, thereby reducing the area of ​​the air inlet channel 10 and improving the smoke extraction efficiency.

[0110] It should be added that the above control method is mainly for cases where the outline area 31 of the oil fume to be absorbed is greater than the preset area 32, that is, the concentration of the oil fume to be absorbed is too high. When the outline area of ​​the oil fume to be absorbed is less than the preset area 32, it means that the current smoke extraction efficiency of the range hood can meet the current oil fume emission requirements. Therefore, the unfolded area of ​​the baffle plate 20 does not need to be adjusted, that is, the state of the baffle plate 20 can be kept unchanged.

[0111] For example Figure 3 The baffle plate shown can optionally have its unfolded area adjusted according to the current information on the fumes to be absorbed, including:

[0112] Based on the current information about the oil fumes to be absorbed, the drive motor rotates at preset angle steps, and the unfolded area of ​​the baffle plate is adjusted at preset area steps.

[0113] Specifically, in the initial state, the layers of the baffle plate 20 are overlapping. When the baffle plate 20 is gradually unfolded according to the current information of the oil fumes to be absorbed, the rotating motor 21 is first driven to rotate at a preset angle step. When the rotating motor 21 rotates, it drives the top plate 24 connected to it to rotate. During the rotation of the top plate 24, the limiting protrusion 25 fixedly connected to it also rotates in the limiting groove 26 of the next nested plate 23 until it rotates to the limit position of the limiting groove 26. At this time, the next nested plate 23 will also be driven to rotate, thereby gradually increasing the unfolded area of ​​the baffle plate 20.

[0114] The technical solution of this invention, by setting up a multi-layered nested baffle plate and using an image sensor to identify the smoke, adjusts the rotation angle of the motor to adjust the effective air intake cross-section of the smoke hood fan, and automatically adjusts the suction air pressure of the smoke hood, thereby improving the smoke extraction efficiency.

[0115] Example 4

[0116] Figure 9 This is a flowchart of the working process of a range hood provided in Embodiment 4 of the present invention, for reference. Figures 1-6 as well as Figure 9First, it should be noted that in this embodiment, an AI image recognition monitoring probe, i.e., an image sensor 30, is installed on the front side of the desktop range hood. The AI ​​image probe can identify the three-dimensional information of the flue gas in a certain area, store the flue gas information in the form of a three-dimensional flue gas information matrix, and analyze it in real time. A wind speed monitoring point P is set in the outlet area of ​​the range hood. The speed information at monitoring point P is used to reflect the noise of the range hood; the higher the outlet speed of the range hood, the greater the noise of the range hood. The remaining structure can be referred to in Embodiment 1 above, and will not be repeated here.

[0117] The following is for reference. Figure 9 The actual workflow of the range hood provided in this embodiment is described as follows: First, the range hood is turned on. The AI ​​image probe identifies the three-dimensional panoramic information matrix of the flue gas. If the matrix is ​​not greater than the three-dimensional flue gas matrix that the range hood can handle, it means that the flue gas information is not greater than the preset flue gas information, and the current state of the range hood is maintained. If the matrix is ​​greater than the three-dimensional flue gas matrix that the range hood can handle, the fan speed of the desktop range hood is increased, and the outlet wind speed of the range hood is measured (the outlet wind speed of the range hood can reflect the working noise of the range hood). If the outlet wind speed of the range hood is not greater than the critical set wind speed, it returns to re-identify the three-dimensional panoramic information matrix of the flue gas through the AI ​​image probe; otherwise, the fan speed is immediately reduced by 5% to reduce the noise of the range hood. At this time, the rotating motor starts to work, rotating at a preset angle to reduce the effective air intake area of ​​the range hood fan inlet. The AI ​​image probe continues to identify the three-dimensional panoramic information matrix of the flue gas. If the flue gas information is not greater than the three-dimensional flue gas matrix that the range hood can handle, the current state of the range hood is maintained; otherwise, the rotation angle 'a' of the rotating motor is read. If the motor's rotation angle exceeds the maximum set angle, the current range hood status is maintained; otherwise, the motor is controlled again to rotate to the preset angle, further reducing the effective air intake area of ​​the range hood fan. While maintaining the current range hood status, a shutdown signal is continuously detected. If a shutdown signal is received, the power is cut off after a 2-minute delay, the range hood is shut down, and the motor's rotation angle is reset.

[0118] Example 5

[0119] Figure 10 This is a schematic diagram of the structure of a control device for a range hood provided in Embodiment 5 of the present invention. The device is applicable to the control of a range hood and can be implemented by software and / or hardware, and is generally integrated into the control equipment of the range hood.

[0120] like Figure 10 As shown, the device includes:

[0121] The oil fume information acquisition module 410 is used to acquire the current oil fume information to be absorbed.

[0122] The area adjustment module 420 is used to adjust the unfolded area of ​​the baffle plate according to the current information of the oil fume to be absorbed, so as to adjust the air intake area of ​​the air inlet; wherein, the air intake area of ​​the air inlet is inversely proportional to the air intake efficiency.

[0123] In this embodiment, the device first acquires the current information of the oil fumes to be absorbed through the oil fume information acquisition module; then, through the area adjustment module, it adjusts the unfolded area of ​​the baffle plate according to the current oil fume information to adjust the air intake area of ​​the air inlet. This technical solution solves the problem that increasing the fan power when adjusting the suction efficiency of existing range hoods leads to excessive noise that affects the user experience. By adjusting the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air inlet, the suction efficiency is adjusted without causing noise interference, thus improving the user experience.

[0124] like Figure 2 As shown, optionally, the range hood also includes an image sensor 30; the image sensor 30 is disposed on the outside of the air inlet of the range hood, and the image sensor 30 is located at the center of the range hood in the horizontal direction.

[0125] Based on this, the oil fume information acquisition module 410 may specifically include:

[0126] The image acquisition unit for the oil fume to be absorbed is used to acquire the current image of the oil fume to be absorbed using an image sensor;

[0127] The oil fume contour recognition unit is used to identify the contour of the oil fume to be absorbed in the current oil fume image.

[0128] Therefore, the area adjustment module 420 is specifically used for:

[0129] Adjust the unfolded area of ​​the range hood's baffle plate according to the outline area of ​​the oil fumes to be absorbed.

[0130] Optionally, the device further includes an area determination module, used to determine that the outline area of ​​the current oil fume to be absorbed is greater than a preset area before adjusting the unfolded area of ​​the baffle plate of the range hood based on the outline area of ​​the current oil fume to be absorbed.

[0131] like Figure 3 As shown, specifically, the wind deflector 20 may include a rotating motor 21, a bottom plate 22, a multi-layer nested plate 23, and a top plate 24 stacked sequentially along a first direction; the first direction is the air suction direction; the bottom plate 22, the nested plate 23, and the top plate 24 all have openings and their projections overlap in the first direction at the front edge of the unfolding process.

[0132] The rotating motor 21 is used to drive any two adjacent plates in the stacked bottom plate 22, multi-layer nested plate 23 and top plate 24 to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector 20.

[0133] Based on this, the area adjustment module 420 is specifically used for:

[0134] Based on the current information about the oil fumes to be absorbed, the drive motor rotates at preset angle steps, and the unfolded area of ​​the baffle plate is adjusted at preset area steps.

[0135] Optionally, the device further includes an angle determination module, used to determine that the current rotation angle of the rotating motor is less than an angle threshold before driving the rotating motor to rotate in a preset angle step and adjusting the unfolded area of ​​the baffle plate in a preset area step according to the current information on the oil fumes to be absorbed.

[0136] Optionally, the device also includes a fan adjustment module, which, after acquiring the current information on the oil fumes to be absorbed, and before adjusting the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air intake channel, determines whether the current information on the oil fumes to be absorbed is greater than the preset information on the oil fumes to be absorbed, and increases the speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood when the current information on the oil fumes to be absorbed is greater than the preset information on the oil fumes to be absorbed.

[0137] Furthermore, the device also includes:

[0138] The wind speed detection module is used to detect the wind speed at the air outlet of the range hood after increasing the fan speed in the range hood to increase the smoke extraction efficiency.

[0139] Therefore, the fan adjustment module is also used to reduce the fan speed by a preset ratio when the wind speed is greater than the preset wind speed.

[0140] The above-mentioned smoke hood control device can execute the smoke hood control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0141] Example 6

[0142] Figure 11 This is a structural schematic diagram of a range hood provided in Embodiment Six of the present invention. Figure 11 As shown, the range hood provided in Embodiment 5 of the present invention includes: one or more processors 51 and a storage device 52; the processor 51 in the range hood may be one or more. Figure 11 Taking a processor 51 as an example; storage device 52 is used to store one or more programs; 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 smoke hood as described in any of the embodiments of the present invention.

[0143] The range hood may also include an input device 53 and an output device 54.

[0144] 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 10 Taking the example of a connection between China and Israel via a bus.

[0145] The storage device 52 in the range hood serves as a computer-readable storage medium, capable of storing one or more programs. These programs can be software programs, computer-executable programs, or modules, such as the program instructions / modules corresponding to the range hood control methods provided in the various embodiments of this invention. The processor 51 executes various functional applications and data processing of the range hood by running the software programs, instructions, and modules stored in the storage device 52, thereby implementing the range hood control methods described in the above method embodiments.

[0146] Storage device 52 may include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the tobacco machine. Furthermore, storage device 52 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, storage device 52 may further include memory remotely located relative to processor 51, which can be connected to the tobacco machine via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0147] Input device 53 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the smoke machine. Output device 54 may include display devices such as a display screen.

[0148] Furthermore, when one or more programs included in the aforementioned range hood are executed by one or more processors 51, the programs perform the following operations:

[0149] Obtain information on the current amount of oily fumes to be absorbed;

[0150] Based on the current information about the fumes to be absorbed, adjust the unfolded area of ​​the baffle plate to adjust the air intake area of ​​the air inlet; the air intake area and air intake efficiency are inversely proportional.

[0151] Example 7

[0152] Embodiment 7 of the present invention provides a computer-readable storage medium storing a computer program thereon. When the program is executed by a processor, it is used to perform a control method for a range hood. The method includes: acquiring current information on the oil fumes to be absorbed; adjusting the unfolded area of ​​the baffle plate according to the current information on the oil fumes to be absorbed, so as to adjust the air intake area of ​​the air inlet; wherein the air intake area of ​​the air inlet is inversely proportional to the air intake efficiency.

[0153] Optionally, when the program is executed by the processor, it can also be used to execute the control method of the smoke hood provided in any embodiment of the present invention.

[0154] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (AM), read-only memory (OM), erasable programmable read-only memory (EPOM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination thereof. A computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0155] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0156] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0157] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone 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 remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0158] Note that the above description is merely a preferred embodiment 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 various obvious changes, readjustments, and substitutions can be made 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 which is determined by the scope of the appended claims.

Claims

1. A range hood, characterized in that, The smoke hood includes an air inlet channel (10); A baffle plate (20) is provided in the air inlet channel (10); the unfolded area of ​​the baffle plate (20) is adjustable; The wind deflector (20) includes a rotating motor (21), a bottom plate (22), a multi-layer nested plate (23), and a top plate (24) stacked sequentially along a first direction; the first direction is the suction direction; the bottom plate (22), the nested plate (23), and the top plate (24) all have openings and their projections overlap in the first direction at the front edge of the unfolding process; The rotating motor (21) is used to drive any two adjacent ones of the stacked bottom plate (22), the multiple nested plates (23) and the top plate (24) to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector (20). Limiting protrusions (25) are provided on the edge of the surface of the top plate (24) and the multi-layer nested plates (23) facing the bottom plate (22). Limiting grooves (26) are provided on the edge of the multi-layer nested plates (23) and the bottom plate (22) to allow the limiting protrusions (25) to move in the rotation direction. The limiting protrusions (25) are placed in the limiting grooves (26) of the next plate layer. The base plate (22) includes a nested plate movement limiting groove (222), and the limiting protrusion (25) on the nested plate (23) near the base plate (22) is placed in the nested plate movement limiting groove (222) on the base plate (22).

2. The range hood according to claim 1, characterized in that, The range hood also includes an image sensor (30); the image sensor (30) is located outside the air inlet of the range hood, and the image sensor (30) is located at the center of the range hood in the horizontal direction.

3. The smoke hood according to claim 1, characterized in that, The rotating motor (21) has a transmission protrusion (211) on its motor shaft (212) and a transmission groove (241) at the center of the top plate (24). The transmission protrusion (211) of the motor shaft (212) is connected to the transmission groove (241) of the top plate (24). The rotating motor (21) drives the top plate (24) to rotate, thereby driving the limiting protrusion (25) of the top plate (24) to rotate, so that the limiting protrusion (25) rotates to the limit position of the limiting groove (26) of the next plate layer, thereby driving the next plate layer to rotate.

4. The range hood according to claim 3, characterized in that, The base plate (22) includes a limiting ring rail (221), a motor fixing hole (223), and a motor shaft through hole (224). The edges of the top plate (24) and the nested plate (23) are both embedded in the limiting circular rail (221); The motor shaft (212) of the rotating motor (21) passes through the motor shaft through hole (224), and the rotating motor (21) is fixed to the base plate (22) through the motor fixing hole (223).

5. The range hood according to claim 3, characterized in that, The top plate (24) also includes a motor shaft mating recess (242) and a rotation limiting protrusion (243). The transmission groove (241) is disposed in the motor shaft mating recess (242), and the end of the motor shaft (212) of the rotating motor (21) extends into the transmission groove (241) to be connected to the motor shaft mating recess (242) for transmission. The rotation limiting protrusion (243) is placed in the limiting groove (26) on the nesting plate (23) near the top plate (24).

6. A method for controlling a range hood, characterized in that, Use the range hood as described in any one of claims 1-5; The control method includes: Obtain information on the current amount of oily fumes to be absorbed; Based on the current information on the oil fumes to be absorbed, the unfolded area of ​​the baffle plate (20) is adjusted to adjust the air intake area of ​​the air intake channel (10); wherein, the air intake area of ​​the air intake channel (10) is inversely proportional to the air intake efficiency; The range hood includes an image sensor (30), which is located outside the air inlet of the range hood and is positioned at the center of the range hood in the horizontal direction. The process of obtaining the current information on the oily fumes to be absorbed includes: The image sensor (30) is used to acquire the current image of the oil fume to be absorbed; In the current image of the oil fume to be absorbed, the outline of the current oil fume to be absorbed is identified; The step of adjusting the unfolded area of ​​the range hood baffle (20) based on the current information on the oil fumes to be absorbed includes: Adjust the unfolded area of ​​the baffle plate (20) of the range hood according to the outline area of ​​the current oil fume to be absorbed.

7. The control method according to claim 6, characterized in that, Before adjusting the unfolded area of ​​the range hood baffle (20) according to the outline area of ​​the current oil fume to be absorbed, the method further includes: The outline area of ​​the current oil fume to be absorbed is determined to be greater than a preset area.

8. The control method according to claim 6, characterized in that, The wind deflector (20) includes a rotating motor (21), a bottom plate (22), a multi-layer nested plate (23), and a top plate (24) stacked sequentially along a first direction; the first direction is the suction direction; the bottom plate (22), the nested plate (23), and the top plate (24) all have openings and their projections overlap in the first direction at the front edge of the unfolding process; The rotating motor (21) is used to drive any two adjacent ones of the stacked bottom plate (22), the multiple nested plates (23) and the top plate (24) to rotate relative to each other, so as to block each other's openings and change the unfolded area of ​​the wind deflector (20). The step of adjusting the unfolded area of ​​the range hood baffle (20) based on the current information on the oil fumes to be absorbed includes: Based on the current information on the oil fumes to be absorbed, the rotating motor (21) is driven to rotate at a preset angle step, and the unfolded area of ​​the baffle plate (20) is adjusted at a preset area step.

9. The control method according to claim 8, characterized in that, Before driving the rotary motor (21) to rotate in preset angle steps and adjusting the unfolded area of ​​the baffle plate (20) in preset area steps according to the current information on the oil fumes to be absorbed, the method further includes: It is determined that the current rotation angle of the rotating motor (21) is less than the angle threshold.

10. The control method according to claim 6, characterized in that, After obtaining the current information on the oil fumes to be absorbed, and before adjusting the unfolded area of ​​the baffle plate (20) to adjust the air intake area of ​​the air intake channel (10), the method further includes: Determine whether the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed, and if the current amount of oil fume to be absorbed is greater than the preset amount of oil fume to be absorbed, increase the rotation speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood.

11. The control method according to claim 10, characterized in that, After increasing the rotational speed of the fan in the range hood to increase the smoke extraction efficiency of the range hood, the method further includes: Detect the air velocity at the exhaust outlet of the range hood; When the wind speed is greater than the preset wind speed, the fan speed is reduced by a preset ratio.

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