Smoke baffle control method of range hood and range hood

Abstract

The application relates to the field of household appliances, in particular to a smoke baffle control method of an extractor hood and the extractor hood. The extractor hood comprises a fan box, a smoke baffle and a first height detection unit, the fan box is provided with an air inlet below, the smoke baffle is rotationally arranged at the air inlet and is used for controlling the size of the air inlet, and the first height detection unit is used for detecting height information of a currently used pot. The method comprises the following steps: acquiring the height information of the currently used pot detected by the first height detection unit; determining whether the smoke baffle will collide with the currently used pot during the opening process based on the height information; if yes, sending a prompt information to remind the user; and if no, controlling the smoke baffle to rotate to a preset standard angle interval. The method can effectively avoid the collision between the smoke baffle and the pot when the height of the pot is too high.

Description

Technical Field

[0001] This application relates to the field of home appliances, and in particular to a method for controlling the smoke baffle of a range hood and the range hood itself. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They operate on the principles of fluid dynamics, using a centrifugal fan inside to draw in and exhaust cooking fumes, and a filter to remove some of the grease particles.

[0003] To improve smoke extraction and expand the smoke collection area, existing technologies such as side-suction and low-suction range hoods use a smoke baffle at the smoke inlet to increase the smoke collection area. Most of these baffles employ a flip-up structure, allowing the smoke inlet to be closed when not in use, reducing space usage and improving the range hood's aesthetics. However, because the smoke baffle rotates along a fan-shaped area at a certain angle (e.g., ... Figure 1 In the α region (in the pot), the space encroachment during the rotation process is relatively large. When the pot is too tall, the pot may tip over during the rotation process.

[0004] Therefore, to prevent wok splattering, common solutions in existing technologies mainly involve structural improvements, such as reducing the size of the smoke baffle, changing the opening method of the smoke baffle (e.g., changing from a rotating type to a horizontal in-and-out type, or making the smoke baffle a retractable plate), or installing a liftable smoke collection hood. However, these improvements have the following problems: First, reducing the size of the smoke baffle: Since the use of extra-tall woks is relatively rare, and most working scenarios involve stir-frying with large amounts of oil fumes, reducing the size of the smoke baffle will lead to a reduction in the smoke collection area, thus reducing the smoke extraction effect in most situations. Second, changing the opening method of the smoke baffle: This requires changing the mechanical structure of the conventional range hood, adding an additional horizontal extension device or telescopic structure, which increases the overall structural complexity and cost. Third, making the smoke collection hood a liftable type: This also requires changing the mechanical structure of the conventional range hood, adding a lifting device, which makes the structure more complex and the overall cost higher. Summary of the Invention

[0005] Therefore, it is necessary to provide a method for controlling the smoke baffle of a range hood and a range hood in response to the above-mentioned technical problems.

[0006] In a first aspect, embodiments of this application provide a method for controlling the smoke baffle of a range hood. The range hood includes a fan box, a smoke baffle, and a first height detection unit. A smoke inlet is located below the fan box, and the smoke baffle is rotatably disposed at the smoke inlet to control the size of the smoke inlet. The first height detection unit is used to detect the height information of the currently used cookware. The method includes:

[0007] Obtain the height information of the currently used cookware detected by the first height detection unit;

[0008] Based on the height information, it is determined whether the smoke baffle will collide with the currently used cookware during the opening process;

[0009] If so, a notification message will be sent to remind the user;

[0010] If not, the smoke baffle is controlled to rotate to a preset standard angle range.

[0011] In one embodiment, the prompt information includes a first prompt reminding the user to lower the height of the currently used cookware or to replace the currently used cookware, and the method further includes:

[0012] If the smoke baffle collides with the pot being used during the opening process, a first warning message will be issued;

[0013] When it is determined, based on the reacquired height information, that the smoke baffle will not collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a preset standard angle range.

[0014] In one embodiment, the method further includes:

[0015] After a first preset time following the issuance of the first prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle, the critical angle being the angle at which the smoke baffle is about to collide with the currently used cookware.

[0016] In one embodiment, the prompting information includes a second prompting the user to lower the height of the currently used cookware or move the currently used cookware away, and a third prompting the user to put the currently used cookware back; after determining that the smoke baffle will collide with the currently used cookware during the opening process, the method further includes:

[0017] Based on the height information, determine whether the smoke baffle will collide with the currently used cookware when it is in the preset maximum angle range; if not, issue a second prompt message.

[0018] After controlling the smoke baffle to rotate to the preset maximum angle range, a third prompt message is issued.

[0019] In one embodiment, the method further includes:

[0020] After a first preset time following the issuance of the second prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle, which is the angle at which the smoke baffle is about to collide with the currently used cookware.

[0021] In one embodiment, the range hood further includes a second height detection unit for detecting the user's height information; after controlling the smoke baffle to rotate to a preset standard angle range, the method further includes:

[0022] Obtain the user's height information detected by the second height detection unit;

[0023] Based on the height information, the smoke baffle is controlled to rotate to the corresponding first matching angle, which is within the preset standard angle range.

[0024] In one embodiment, the range hood further includes an oil fume concentration detection unit for detecting oil fume concentration information. After controlling the smoke baffle to rotate to a preset standard angle range, the method further includes:

[0025] Based on one or more of the information on oil fume concentration, fan speed, and stove fire level, the smoke baffle is controlled to rotate to the corresponding second matching angle, which is within the preset standard angle range.

[0026] Secondly, this application provides a range hood, including a fan box, a smoke baffle, a first height detection unit, and a controller. The fan box has a smoke inlet below it, and the smoke baffle is rotatably disposed at the smoke inlet to control the size of the smoke inlet. The first height detection unit is used to detect the height information of the cookware currently in use.

[0027] The controller is used to acquire the height information of the currently used cookware detected by the first height detection unit; based on the height information, it determines whether the smoke baffle will collide with the currently used cookware during the opening process; if so, it issues a prompt message to remind the user; if not, it controls the smoke baffle to rotate to a preset standard angle range.

[0028] In one embodiment, the range hood further includes an oil fume concentration detection unit for detecting oil fume concentration information;

[0029] The controller is also used to acquire the user's height information detected by the first height detection unit; based on the height information, control the smoke baffle to rotate to the corresponding first matching angle, the first matching angle being within the preset standard angle range.

[0030] In one embodiment, the range hood further includes an oil fume concentration detection unit for detecting oil fume concentration information;

[0031] The controller is also used to control the smoke baffle to rotate to a corresponding second matching angle based on one or more of the following: oil fume concentration information, fan speed information, and stove fire level information. The second matching angle is within the preset standard angle range.

[0032] Compared to existing technologies, this application, by setting up a first height detection unit, detects the height of the cookware and judges the rotation angle of the baffle plate before the range hood fan is turned on. When it is determined that the current height of the cookware will collide with the baffle plate, the baffle plate is controlled not to flip directly to the standard position, and a prompt message is issued to remind the user. This can effectively prevent the baffle plate from flipping and colliding with the cookware when the cookware is too high. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a range hood in the background art;

[0034] Figure 2 This is a schematic diagram of the structure of a range hood in one embodiment of this application;

[0035] Figure 3 This is a flowchart illustrating the smoke baffle control method for a range hood in one embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the process of controlling the smoke baffle to rotate to a preset standard angle range in one embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the process of controlling the smoke baffle to rotate to a preset maximum angle range in one embodiment of this application;

[0038] Figure 6 This is a schematic diagram of the process of controlling the smoke baffle to rotate to the corresponding first matching angle in one embodiment of this application. Detailed Implementation

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of the present invention. For those skilled in the art, the present invention can be applied to other similar scenarios based on these drawings without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0040] As indicated in this invention and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0041] While this invention makes various references to certain modules in systems according to embodiments of the invention, any number of different modules can be used and run on computing devices and / or processors. Modules are merely illustrative, and different aspects of the system and method may use different modules.

[0042] It should be understood that when a unit or module is described as "connected" or "coupled" to other units, modules, or blocks, it may refer to a direct connection or coupling, or communication with other units, modules, or blocks, or the presence of intermediate units, modules, or blocks, unless the context explicitly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0043] This application provides an embodiment of a range hood, such as... Figure 2 As shown, the range hood includes a fan housing 10, a smoke collection chamber 20, a first height detection unit (not shown in the figure), and a controller (not shown in the figure). The fan housing 10 houses the fan. The smoke collection chamber 20 is located below the fan housing 10 and includes a smoke baffle 201. A smoke inlet for allowing cooking fumes to enter is located below the smoke baffle 201, and the smoke baffle 201 is rotatably positioned at the smoke inlet to control its size. The first height detection unit detects the height of the currently used cookware.

[0044] like Figure 3 As shown in the figure, this application embodiment provides a method for controlling the smoke baffle of a range hood, applied to, for example... Figure 2 The controller of the range hood shown includes the following steps:

[0045] S201, Obtain the height information of the currently used cookware detected by the first height detection unit.

[0046] The first height detection unit can be a sensor installed on the fan box or the smoke hood, including a position sensor, a distance sensor, etc.

[0047] S202, based on the height information, determine whether the smoke baffle will collide with the currently used cookware during the opening process.

[0048] Specifically, the height information is compared with a set height threshold, and the comparison result determines whether the smoke baffle will collide with the pot being used during the opening process.

[0049] S203, if so, then issue a notification message to remind the user.

[0050] The prompt information can be implemented through at least one of voice, text, and animation.

[0051] S204, if not, control the smoke baffle to rotate to a preset standard angle range.

[0052] The rotation angle of the smoke baffle refers to the angle between the smoke baffle and the plane containing the smoke inlet. Figure 2 The symbol β is used to represent the angle. The preset standard angle is denoted as α, where α ∈ (30°, 60°).

[0053] Specifically, in actual cooking scenarios, some users habitually place the pots and pans before turning on the range hood. Furthermore, some groups, such as the elderly, are unsure if there's a possibility of the pots and pans hitting the hood, especially when the pots and pans are at a height close to the critical range. This application addresses this by incorporating a first height detection unit. Before the range hood fan starts operating, it detects the pot's height and determines the angle of the baffle's rotation. If it determines that the pot's current height will collide with the baffle, it prevents the baffle from directly flipping to the standard position and issues a warning message to the user. Compared to existing technologies that directly flip the baffle, this effectively prevents pots and pans from tipping over when the pots and pans are too high.

[0054] In one embodiment, such as Figure 4 As shown, the prompt information includes a first prompt reminding the user to lower the height of the currently used cookware or to replace the currently used cookware. The method also includes the following steps:

[0055] S301, if the smoke baffle collidees with the pot being used during the opening process, a first warning message is issued.

[0056] The first prompt message is, for example: The pot is too high. Please lower the pot or replace it.

[0057] S302, when it is determined, based on the reacquired height information, that the smoke baffle will not collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a preset standard angle range.

[0058] Specifically, if the smoke baffle collides with the currently used cookware during the opening process, the controller issues a first prompt message. After the user adjusts the height of the cookware or changes the cookware according to the first prompt message, the controller re-acquires the height information of the cookware and compares it with the height threshold. After determining that the height will not collide with the opening process of the smoke baffle, the controller controls the smoke baffle to rotate to a preset standard angle range to avoid collision between the smoke baffle and the cookware.

[0059] In one embodiment, after a first preset time following the issuance of the first prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle, the critical angle being the angle at which the smoke baffle is about to collide with the currently used cookware.

[0060] Specifically, if the user adjusts the cookware height after a first preset time according to the first prompt, and the adjusted height is still greater than the height threshold, the baffle will still collide with it during the opening process. In this case, the controller controls the baffle to rotate to the critical angle, so that the baffle can draw in fumes, steam and other gases with a small opening angle. The critical angle is denoted as γ, where γ∈(0°, 30°).

[0061] In this embodiment, by setting a critical angle, in certain cooking scenarios, such as steaming buns when the height of the steamer cannot be lowered, or when the user does not want to lower the height of the pot, the baffle can draw in fumes and steam by opening at a small angle, thus preventing excessive smoke in the kitchen.

[0062] In one embodiment, the prompt information includes a second prompt reminding the user to lower the height of the currently used cookware or move the currently used cookware away, and a third prompt reminding the user to put the currently used cookware back. Figure 5 As shown, after determining that the smoke baffle will collide with the currently used cookware during the opening process, the method further includes the following steps:

[0063] S401, based on the height information, determine whether the smoke baffle will collide with the currently used cookware when it is in the preset maximum angle range. If not, issue a second prompt message.

[0064] S402, after controlling the smoke baffle to rotate to the preset maximum angle range, issue a third prompt message.

[0065] The second prompt message is, for example: "The cookware is too high and may spill. Please lower the cookware or move it away first. After the smoke baffle rotates and opens, put the cookware back in."

[0066] The third prompt message is, for example: The smoke baffle has been rotated into place. Please put the pot back in.

[0067] Specifically, after determining that the baffle will collide with the cookware during the opening process, it is further determined whether the space below can accommodate the current cookware when the opening angle of the baffle is within the preset maximum angle range.

[0068] If the determination result indicates that the space below is sufficient to accommodate the current cookware, and the smoke baffle will not collide with the currently used cookware, a second prompt message is issued, reminding the user to lower the height of the currently used cookware or move the cookware away. During this process, if the user moves the currently used cookware, the controller rotates the smoke baffle to a preset maximum angle range and issues a third prompt message reminding the user to put the currently used cookware back. The preset maximum angle is denoted as θ, where θ∈(60°, 120°).

[0069] If the judgment result is that the space below cannot accommodate the current cookware, the smoke baffle will collide with the current cookware. Then, the smoke baffle is controlled to rotate to the critical angle and a first prompt message is issued to remind the user to lower the height of the current cookware or replace the current cookware.

[0070] In this embodiment, in some cooking scenarios, the pot may only tip over during rotation, but after rotation, once the baffle reaches its designated position, there is enough space below it to accommodate the pot. Therefore, the control method in the above embodiment can still ensure that the baffle has a large smoke-gathering area even when the pot is relatively high, ensuring that the smoke extraction effect is not affected.

[0071] In one embodiment, after a first preset time following the issuance of the second prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle, the critical angle being the angle at which the smoke baffle is about to collide with the currently used cookware.

[0072] The first preset time can be 3 to 10 minutes, with 5 minutes being preferred.

[0073] Specifically, if the user chooses to change the cookware after the controller issues the second prompt message, the first height detection unit monitors the height information of the cookware in real time. If the height information of the cookware is still greater than the height threshold after a first preset time, the smoke baffle will collide with the currently used cookware during the opening process. Then, the smoke baffle is controlled to rotate to the critical angle.

[0074] In addition to controlling the rotation angle of the smoke baffle based on the height information of the currently used cookware detected by the first height detection unit as described in the above embodiments, the following embodiments use a second height detection unit to detect the user's height information and control the rotation of the smoke baffle based on the user's height information.

[0075] In one embodiment, the range hood further includes a second height detection unit (not shown in the figure) for detecting the user's height information. Figure 6 As shown in S204, after controlling the smoke baffle to rotate to a preset standard angle range, the method further includes the following steps:

[0076] S501, Obtain the height information of the user detected by the second height detection unit.

[0077] The second height detection unit can be a sensor installed on the smoke collection hood of the fan box, including an infrared sensor, an image sensor, etc.

[0078] S502, based on the height information, control the smoke baffle to rotate to the corresponding first matching angle, the first matching angle being within the preset standard angle range.

[0079] Specifically, since different users have different heights, and the smoke baffle may obstruct the view of taller users when it is open, in order to avoid the user's view being disturbed and affecting the cooking action, after confirming that the smoke baffle will not collide with the pot being used during the opening process, the user's height information is detected by the second height detection unit, and the smoke baffle is controlled to rotate to the corresponding first matching angle based on the height information.

[0080] For example, if the detected user's height is a, a∈[0, 160cm], then the smoke baffle is controlled to rotate to a matching angle β1, β1∈(30°, 60°]; if the detected user's height is b, b∈(160, 175], then the smoke baffle is controlled to rotate to a matching angle β2, β2∈(30°, 60°]; if the detected user's height is c, c∈(175, ∞), then the smoke baffle is controlled to rotate to a matching angle β3, β3∈(30°, 60°). Wherein, β3<β2<β1.

[0081] It should be noted that, in addition to combining the user's height information with the height information of the cookware to control the rotation angle of the smoke baffle, the rotation angle of the smoke baffle can also be controlled independently based on the user's height information, as needed.

[0082] In addition to controlling the rotation angle of the smoke baffle based on the height of the cookware, or controlling the rotation angle of the smoke baffle based on the height of the cookware and the user's height information, as described in the above embodiments, the following embodiments use an oil fume concentration detection unit to detect the oil fume concentration information in the environment, and control the rotation angle of the smoke baffle based on the oil fume concentration information and / or the fan speed information and / or the firepower level of the stove.

[0083] In one embodiment, the range hood further includes an oil fume concentration detection unit (not shown in the figure) for detecting oil fume concentration information. S204 After controlling the smoke baffle to rotate to a preset standard angle range, the method further includes:

[0084] Based on one or more of the information on oil fume concentration, fan speed, and stove fire level, the smoke baffle is controlled to rotate to the corresponding second matching angle, which is within the preset standard angle range.

[0085] The oil fume concentration detection unit can be a sensor installed on the fan box or the fume hood, including an infrared sensor, an image sensor, etc. The fan speed information can be obtained based on the motor power. The stove's firepower level can be obtained based on the adjustment signal of the stove's firepower knob.

[0086] Specifically, after confirming that the smoke baffle will not collide with the cookware being used during the opening process, the system obtains the current ambient smoke concentration information and / or fan speed information and / or stove fire level, and controls the smoke baffle to rotate to the corresponding second matching angle.

[0087] For example, if the oil fume concentration information is selected as the judgment condition for the second matching angle, when the oil fume concentration m∈[0,30%], the smoke baffle is controlled to rotate to the matching angle β4, β4∈(30°,60°]; when the oil fume concentration m∈(30%,60%], the smoke baffle is controlled to rotate to the matching angle β5, β5∈(30°,60°]; when the oil fume concentration m∈(60%,100%], the smoke baffle is controlled to rotate to the matching angle β6, β6∈(30°,60°], where β4<β5<β6.

[0088] It should be noted that if the fan speed information or the firepower of the stove is selected as the judgment condition for the second matching angle, the judgment process is similar to the judgment process of the oil fume concentration information mentioned above, and will not be repeated here.

[0089] For example, if the oil fume concentration information and fan speed information (or oil fume concentration information and stove fire level, or oil fume concentration information, fan speed information and stove fire level) are selected together as the judgment conditions for the second matching angle, the second matching angle of the smoke baffle is determined by weighted summation according to their respective weights.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for controlling the smoke baffle of a range hood, the range hood comprising a fan box, a smoke baffle, and a first height detection unit, wherein a smoke inlet is provided below the fan box, the smoke baffle is rotatably disposed at the smoke inlet for controlling the size of the smoke inlet, and the first height detection unit is used to detect the height information of the currently used cookware, characterized in that, The method includes: Obtain the height information of the currently used cookware detected by the first height detection unit; Based on the height information, it is determined whether the smoke baffle will collide with the currently used cookware during the opening process; If so, a notification message will be sent to remind the user; If not, the smoke baffle is rotated to a preset standard angle range; The prompt information includes a first prompt reminding the user to lower the height of the currently used cookware or to replace the currently used cookware. The method further includes: If the smoke baffle collides with the pot being used during the opening process, a first warning message will be issued; When it is determined, based on the reacquired height information, that the smoke baffle will not collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a preset standard angle range, which is (30°, 60°). After a first preset time following the issuance of the first prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle. The critical angle is the angle at which the smoke baffle is about to collide with the currently used cookware, and the range of the critical angle is (0°, 30°).

2. The method according to claim 1, characterized in that, The prompts include a second prompt reminding the user to lower the height of the currently used cookware or move the currently used cookware away, and a third prompt reminding the user to put the currently used cookware back; After determining that the smoke baffle will collide with the currently used cookware during the opening process, the method further includes: Based on the height information, determine whether the smoke baffle will collide with the currently used cookware when it is in the preset maximum angle range; if not, issue a second prompt message. After controlling the smoke baffle to rotate to the preset maximum angle range, a third prompt message is issued.

3. The method according to claim 2, characterized in that, The method further includes: After a first preset time following the issuance of the second prompt message, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the smoke baffle is controlled to rotate to a critical angle, which is the angle at which the smoke baffle is about to collide with the currently used cookware.

4. The method according to claim 1, characterized in that, The range hood also includes a second height detection unit for detecting the user's height information; after controlling the smoke baffle to rotate to a preset standard angle range, the method further includes: Obtain the user's height information detected by the second height detection unit; Based on the height information, the smoke baffle is controlled to rotate to the corresponding first matching angle, which is within the preset standard angle range.

5. The method according to claim 1, characterized in that, The range hood also includes an oil fume concentration detection unit for detecting oil fume concentration information. After controlling the smoke baffle to rotate to a preset standard angle range, the method further includes: Based on one or more of the information on oil fume concentration, fan speed, and stove fire level, the smoke baffle is controlled to rotate to the corresponding second matching angle, which is within the preset standard angle range.

6. A range hood, characterized in that, It includes a fan box, a smoke baffle, a first height detection unit, and a controller. The fan box has a smoke inlet at the bottom. The smoke baffle is rotatably mounted on the smoke inlet to control the size of the smoke inlet. The first height detection unit is used to detect the height information of the pot currently in use. The controller is used to acquire the height information of the currently used cookware detected by the first height detection unit; based on the height information, it determines whether the smoke baffle will collide with the currently used cookware during the opening process; if so, it issues a prompt message to remind the user; if not, it controls the smoke baffle to rotate to a preset standard angle range. The prompt information includes a first prompt reminding the user to lower the height of the currently used cookware or to replace the currently used cookware. If the smoke baffle collides with the currently used cookware during the opening process, the controller will issue the first prompt information. When the controller determines, based on the reacquired height information, that the smoke baffle will not collide with the currently used cookware during the opening process, it controls the smoke baffle to rotate to a preset standard angle range, which is (30°, 60°). After the controller issues the first prompt message for a first preset time, when it is determined, based on the reacquired height information, that the smoke baffle will collide with the currently used cookware during the opening process, the controller controls the smoke baffle to rotate to a critical angle. The critical angle is the angle at which the smoke baffle is about to collide with the currently used cookware, and the range of the critical angle is (0°, 30°).

7. The range hood according to claim 6, characterized in that, It also includes an oil fume concentration detection unit for detecting oil fume concentration information; The controller is also used to acquire the user's height information detected by the first height detection unit; based on the height information, control the smoke baffle to rotate to the corresponding first matching angle, the first matching angle being within the preset standard angle range.

8. The range hood according to claim 6, characterized in that, It also includes an oil fume concentration detection unit for detecting oil fume concentration information; The controller is also used to control the smoke baffle to rotate to a corresponding second matching angle based on one or more of the following: oil fume concentration information, fan speed information, and stove fire level information. The second matching angle is within the preset standard angle range.

Images