Smoke barrier control method of range hood and range hood

Abstract

The invention relates to the field of household appliances, in particular to a smoke barrier control method of an extractor hood and the extractor hood. The range hood comprises a draught fan box, a smoke barrier and a first height detection unit, a smoke inlet is formed in the lower portion of the draught fan box, the smoke barrier is rotationally arranged at the smoke inlet and used for controlling the size of the smoke 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 height information, detected by the first height detection unit, of the currently used cookware; on the basis of the height information, whether the smoke barrier will collide with the currently used cookware or not in the opening process is determined; if yes, sending prompt information to remind a user; if not, the smoke barrier is controlled to rotate to the preset standard angle interval. By adopting the method, the smoke barrier can be effectively prevented from being overturned to collide with the cookware when the cookware is too high.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a smoke baffle control method for a range hood and the range hood. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Range hoods work based on the principle of fluid dynamics, using a centrifugal fan installed inside the range hood to absorb and exhaust oil fumes, and using a filter to filter out some grease particles.

[0003] In order to improve the smoke absorption effect and expand the smoke collection range, the existing technology, such as side suction and low suction range hoods, uses a smoke shield at the smoke inlet to expand the smoke collection area, and most smoke shields adopt a flip structure, so that the smoke inlet can be closed in a non-working state, which not only reduces the space occupation but also improves the appearance of the range hood. However, when the smoke shield rotates, its rotation path is a fan-shaped area of ​​a certain angle (such as Figure 1 The space occupied during the rotation is still relatively large. When the pot is too high, the pot may hit the surface during the rotation.

[0004] To this end, in order to prevent the pot from breaking, the common solutions in the prior art are mainly structural improvements, such as: reducing the size of the smoke baffle, changing the opening method of the smoke baffle (such as changing from a rotating method to a horizontal in-and-out method, setting the smoke baffle to a retractable plate) or setting a lift-type smoke hood. However, the above improvements have the following problems: First, the method of reducing the size of the smoke baffle: Since the use of ultra-high pots is relatively rare, and most working scenarios involve stir-frying with large oil smoke, reducing the size of the smoke baffle will lead to a reduction in the smoke collection area, thereby reducing the oil fume extraction effect under most working conditions. Second, changing the opening method of the smoke baffle: It is necessary to change the mechanical structure of the conventional range hood, add an additional horizontal extension device or a telescopic structure, resulting in an increase in the overall structural complexity and cost. Third, setting the smoke hood to a lift-type: It is also necessary to change the mechanical structure of the conventional range hood and add a lifting device, which makes the structure more complex and the overall cost higher. Summary of the invention

[0005] Based on this, it is necessary to provide a smoke baffle control method for a range hood and a range hood to address the above technical issues.

[0006] In a first aspect, an embodiment of the present application provides a method for controlling a smoke baffle of a range hood, wherein the range hood comprises a fan box, a smoke baffle, and a first height detection unit, a smoke inlet is provided below the fan box, the smoke baffle is rotatably disposed at the smoke inlet, and is used to control the size of the smoke inlet, the first height detection unit is used to detect height information of a currently used cookware, and the method comprises:

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

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

[0009] If yes, a prompt message is issued 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 first prompt information to remind the user to lower the height of the cookware currently in use or to replace the cookware currently in use, and the method further includes:

[0012] If the smoke baffle collides with the currently used cookware during the opening process, a first prompt message is issued;

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

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

[0015] After a first preset time of issuing the first prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle when the smoke shield is about to collide with the currently used cookware.

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

[0017] Based on the height information, determining whether the smoke shield will collide with the currently used cookware when in a preset maximum angle range, and if not, issuing a second prompt message;

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

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

[0020] After a first preset time of issuing the second prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle when the smoke shield 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 height information of a user; after controlling the smoke baffle to rotate to a preset standard angle range, the method further includes:

[0022] Acquire the height information of the user detected by the second height detection unit;

[0023] Based on the height information, the smoke shield is controlled to rotate to a corresponding first matching angle, and the first matching angle 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 oil smoke concentration information, the fan speed information, and the fire power level information of the stove, the smoke shield is controlled to rotate to a corresponding second matching angle, and the second matching angle is within the preset standard angle range.

[0026] In a second aspect, an embodiment of the present application provides a range hood, comprising a fan box, a smoke baffle, a first height detection unit and a controller, wherein a smoke inlet is provided below the fan box, the smoke baffle is rotatably disposed at the smoke inlet, and is used to control the size of the smoke inlet, and the first height detection unit is used to detect height information of a pot currently in use;

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

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

[0029] The controller is also used to obtain the height information of the user detected by the first height detection unit; based on the height information, control the smoke shield to rotate to a corresponding first matching angle, and the first matching angle is within the preset standard angle range.

[0030] In one of the embodiments, the range hood further comprises 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 oil smoke concentration information, the fan speed information, and the fire power level information of the stove, and the second matching angle is within the preset standard angle range.

[0032] Compared with the prior art, the present application sets a first height detection unit to detect the height of the pot and determine the rotation angle of the smoke shield before the fan of the range hood is turned on. When it is determined that the current height of the pot will collide with the smoke shield, the smoke shield is controlled not to flip directly to the standard position, and a prompt message is issued to remind the user, which can effectively prevent the smoke shield from flipping over and colliding with the pot when the pot is too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a range hood in the background technology;

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

[0035] Figure 3 Schematic diagram of the flow of a method for controlling a smoke baffle of a range hood in one embodiment of the present application;

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

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

[0038] Figure 6 It is a schematic diagram of a process of controlling the smoke baffle to rotate to a corresponding first matching angle in one embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present invention. For ordinary technicians in this field, the present invention can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0040] As shown in the present invention and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0041] Although the present invention makes various references to certain modules in the system according to an embodiment of the present invention, any number of different modules can be used and run on a computing device and / or processor. The modules are only illustrative, and different aspects of the system and method can use different modules.

[0042] It should be understood that when a unit or module is described as being "connected," "coupled" to other units, modules, or blocks, it may refer to being directly connected or coupled, or communicating with other units, modules, or blocks, or there may be intermediate units, modules, or blocks, unless the context clearly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the associated listed items.

[0043] The present application embodiment provides a range hood, such as Figure 2 As shown, the range hood includes a fan box 10, a smoke collecting chamber 20, a first height detection unit (not shown in the figure) and a controller (not shown in the figure). The fan box 10 is used to accommodate the fan. The smoke collecting chamber 20 is arranged below the fan box 10 and includes a smoke baffle 201. A smoke inlet for oil smoke to enter is arranged below the smoke baffle 201, and the smoke baffle 201 is rotatably arranged 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 pot currently in use.

[0044] like Figure 3 As shown, the embodiment of the present application provides a smoke baffle control method for a range hood, which is applied to Figure 2 The controller end of the range hood shown in the figure specifically includes the following steps:

[0045] S201, obtaining height information of the cookware currently in use detected by the first height detection unit.

[0046] The first height detection unit may be a sensor arranged on the fan box or the smoke collecting hood, including a position sensor, a distance sensor and the like.

[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 it is determined based on the comparison result whether the smoke baffle will collide with the currently used cookware during the opening process.

[0049] S203: If yes, a prompt message is sent to remind the user.

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

[0051] S204: If not, control the smoke shield to rotate to a preset standard angle range.

[0052] The rotation angle of the smoke shield refers to the angle between the smoke shield and the plane where the smoke inlet is located. Figure 2 The preset standard angle is denoted as α, α∈(30°, 60°].

[0053] Specifically, in actual cooking scenarios, some users are accustomed to placing the pot before turning on the range hood, and some groups, such as the elderly, cannot determine whether there is a possibility of hitting the pot, especially when the pot height is just above or below the critical range. The present application sets a first height detection unit to detect the pot height and determine the rotation angle of the smoke shield before the range hood fan is turned on. When it is determined that the current pot height will collide with the smoke shield, the smoke shield is controlled not to flip directly to the standard position, and a prompt message is issued to remind the user. Compared with the direct flipping and opening method of the prior art, it can effectively prevent the smoke shield from flipping over and hitting the pot when the pot height is too high.

[0054] In one embodiment, Figure 4 As shown, the prompt information includes first prompt information to remind the user to lower the height of the currently used cookware or replace the currently used cookware, and the method further includes the following steps:

[0055] S301: If the smoke baffle collides with the currently used cookware during the opening process, a first prompt message is issued.

[0056] The first prompt information is, for example: the pot is too high, please lower the pot or replace the pot;

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

[0058] Specifically, if the smoke shield will collide with the currently used cookware during the opening process, the controller sends a first prompt message. After the user adjusts the height of the cookware or replaces 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 shield, the controller controls the smoke shield to rotate to a preset standard angle range to avoid collision between the smoke shield and the cookware.

[0059] In one of the embodiments, after a first preset time of sending the first prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle when the smoke shield is about to collide with the currently used cookware.

[0060] Specifically, if the user adjusts the pot height after the first preset time according to the first prompt information, and the adjusted pot height is still greater than the height threshold, and the smoke shield still collides with it during the opening process, the controller controls the smoke shield to rotate to a critical angle, so that the smoke shield can be opened at a small angle to extract gas such as oil smoke and steam. The critical angle is denoted as γ, γ∈(0°, 30°].

[0061] In this embodiment, by setting a critical angle, in some cooking scenarios, such as steaming buns and the height of the steamer cannot be lowered, or the user does not want to lower the height of the pot, the smoke baffle can open at a small angle to extract oil smoke, steam and other gases, thereby avoiding excessive smoke in the kitchen.

[0062] In one embodiment, the prompt information includes a second prompt information to remind the user to lower the height of the currently used pot or move the currently used pot away, and a third prompt information to remind the user to put back the currently used pot. 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, determining whether the smoke shield will collide with the currently used cookware when in a preset maximum angle range, and if not, issuing a second prompt message.

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

[0065] The second prompt information may be, for example: the pot is a little high and may hit the pot, please lower the height or move the pot away first, and then put the pot back after the smoke shield is rotated open.

[0066] The third prompt message is, for example: the smoke shield has been rotated into place, please put the cookware back.

[0067] Specifically, after determining that the smoke shield 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 smoke shield is within a preset maximum angle range.

[0068] If the judgment result is that the space below is sufficient to accommodate the current pot and the smoke shield will not collide with the current pot, a second prompt message is issued to remind the user to lower the height of the current pot or move the current pot away. During this process, if the user moves the current pot away, the controller rotates the smoke shield to a preset maximum angle range and issues a third prompt message to remind the user to put the current pot back. The preset maximum angle is θ, θ∈(60°,120°].

[0069] If the judgment result is that the space below cannot accommodate the current cookware and the smoke shield will collide with the current cookware, the smoke shield is controlled to rotate to a 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 will only hit the pot during the rotation process, but after the rotation, when the smoke shield reaches the specified position, the space below it is sufficient to place the pot. Therefore, the control method in the above embodiment can ensure that the smoke shield has a larger smoke collection area when some pots are relatively high, ensuring that the oil fume absorption effect is not affected.

[0071] In one of the embodiments, after a first preset time of sending the second prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle at which the smoke shield is about to collide with the currently used cookware.

[0072] The first preset time may be 3 to 10 minutes, preferably 5 minutes.

[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 after the first preset time, the re-acquired height information of the cookware is still greater than the height threshold, the smoke shield will collide with the currently used cookware during the opening process, and the smoke shield is controlled to rotate to a critical angle.

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

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

[0076] S501: Acquire the height information of the user detected by the second height detection unit.

[0077] The second height detection unit may be a sensor disposed on a smoke collecting hood on the fan box, including an infrared sensor, an image sensor, and the like.

[0078] S502: Based on the height information, control the smoke shield to rotate to a corresponding first matching angle, where the first matching angle is within the preset standard angle range.

[0079] Specifically, since different users have different heights, the smoke shield may obstruct the vision of taller users when it is in the open state. Therefore, in order to avoid interference with the user's vision and affect the cooking action, after confirming that the smoke shield will not collide with the currently used pots and pans during the opening process, the user's height information is detected by the second height detection unit, and the smoke shield is controlled to rotate to the corresponding first matching angle based on the height information.

[0080] Exemplarily, if the height of the user is detected to be a, a∈[0, 160cm], the smoke shield is controlled to rotate to a matching angle β1, β1∈(30°, 60°]; if the height of the user is detected to be b, b∈(160, 175], the smoke shield is controlled to rotate to a matching angle β2, β2∈(30°, 60°]; if the height of the user is detected to be c, c∈(175, ∞), the smoke shield 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 cookware's height information to control the rotation angle of the smoke shield, the rotation angle of the smoke shield can also be controlled based on the user's height information alone as needed.

[0082] In addition to controlling the rotation angle of the smoke shield according to the height of the cookware, or controlling the rotation angle of the smoke shield according to the cookware height combined with the user's height information as described in the above embodiments, in the following embodiments, an oil fume concentration detection unit is provided to detect the oil fume concentration information in the environment, and the rotation angle of the smoke shield is controlled according to the oil fume concentration information and / or the fan speed information and / or the fire power level of the stove.

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

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

[0085] The fume concentration detection unit may be a sensor disposed on a fan box or a fume collecting hood, including an infrared sensor, an image sensor, etc. The fan speed information may be obtained based on the motor power. The fire position of the stove may be obtained based on the adjustment signal of the stove fire knob.

[0086] Specifically, after confirming that the smoke shield will not collide with the currently used cookware during the opening process, the oil fume concentration information and / or the fan speed information and / or the fire power level of the stove in the current environment are obtained, and the smoke shield is controlled to rotate to the corresponding second matching angle.

[0087] For example, if the oil smoke concentration information is selected as the judgment condition of the second matching angle. When the oil smoke concentration m∈[0,30%], the smoke baffle is controlled to rotate to the matching angle β4, β4∈(30°,60°]; when the oil smoke concentration m∈(30%,60%], the smoke baffle is controlled to rotate to the matching angle β5, β5∈(30°,60°]; when the oil smoke 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 above-mentioned oil fume concentration information, and will not be repeated here.

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

[0090] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for controlling a smoke baffle of a range hood, the range hood comprising a fan box, a smoke baffle and a first height detection unit, a smoke inlet is arranged below the fan box, the smoke baffle is rotatably arranged 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 pot, characterized in that: The method comprises: Acquiring height information of the currently used cookware detected by the first height detection unit; Based on the height information, determining whether the smoke baffle will collide with the currently used cookware during the opening process; If yes, a prompt message is issued to remind the user; If not, the smoke baffle is controlled to rotate to a preset standard angle range.

2. The method according to claim 1, characterized in that The prompt information includes first prompt information for reminding the user to lower the height of the currently used cookware or to replace the currently used cookware, and the method further includes: If the smoke baffle collides with the currently used cookware during the opening process, a first prompt message is issued; When it is determined based on the re-acquired height information that the smoke shield will not collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a preset standard angle range.

3. The method according to claim 2, characterized in that The method further comprises: After a first preset time of issuing the first prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle when the smoke shield is about to collide with the currently used cookware.

4. The method according to claim 1, characterized in that: The prompt information includes second prompt information for reminding the user to lower the height of the currently used cookware or to move the currently used cookware away, and third prompt information for reminding the user to put back the currently used cookware; 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, determining whether the smoke shield will collide with the currently used cookware when in a preset maximum angle range, and if not, issuing a second prompt message; After the smoke shield is controlled to rotate to a preset maximum angle range, a third prompt message is issued.

5. The method according to claim 4, characterized in that The method further comprises: After a first preset time of issuing the second prompt message, when it is determined based on the re-acquired height information that the smoke shield will collide with the currently used cookware during the opening process, the smoke shield is controlled to rotate to a critical angle, and the critical angle is the angle when the smoke shield is about to collide with the currently used cookware.

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

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

8. A range hood, characterized in that: It includes a fan box, a smoke shield, a first height detection unit and a controller. A smoke inlet is provided below the fan box. The smoke shield is rotatably arranged 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 pot currently in use. The controller is used to obtain the height information of the currently used cookware detected by the first height detection unit; based on the height information, determine whether the smoke shield will collide with the currently used cookware during the opening process; if so, issue a prompt message to remind the user; if not, control the smoke shield to rotate to a preset standard angle range.

9. The range hood according to claim 8, characterized in that: It also includes an oil smoke concentration detection unit for detecting oil smoke concentration information; The controller is also used to obtain the height information of the user detected by the first height detection unit; based on the height information, control the smoke shield to rotate to a corresponding first matching angle, and the first matching angle is within the preset standard angle range.

10. The range hood according to claim 8, characterized in that: It also includes an oil smoke concentration detection unit for detecting oil smoke 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 oil smoke concentration information, the fan speed information, and the fire power level information of the stove, and the second matching angle is within the preset standard angle range.

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