Smoke gathering structure, range hood and control method of range hood

Abstract

The invention provides a smoke gathering structure, a range hood and a control method of the range hood, and relates to the technical field of kitchen appliances. The smoke gathering structure mainly comprises a smoke collecting hood, a smoke gathering plate and a driving assembly. A plurality of clamping structures are arranged in the exhaust fume collecting hood; the smoke gathering plate is arranged on one side of the smoke collecting hood and can rotate relative to the smoke collecting hood; the driving assembly comprises a driving motor and a transmission part which are connected. The transmission part is arranged in the exhaust fume collecting hood and is connected with the exhaust fume gathering plate; the driving motor drives the transmission part to move so as to drive the smoke gathering plate to rotate. According to the embodiment provided by the invention, in the stage that the driving motor drives the transmission part to move to drive the smoke gathering plate to rotate, after the transmission part moves to abut against any clamping structure, the driving motor stops and keeps the self-locking state, and the self-locking driving motor, the abutting clamping structure and the transmission part form enough support for the smoke gathering plate; when a user presses the function key, the smoke gathering plate is kept stable, and it is ensured that the user has good operation (touch) experience and visual experience during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a smoke collecting structure, a range hood and a control method for the range hood. Background Art

[0002] Most modern range hoods are designed with a smoke collecting structure. When the range hood is turned on, the smoke collecting structure drives the smoke collecting plate to open to form a reasonable smoking shape, bringing a good smoking effect. When the range hood is turned off, the smoke collecting structure drives the smoke collecting plate to close, making the appearance of the range hood appear more simple, compact and beautiful.

[0003] When the range hood is working, the smoke collecting plate can be opened and stopped at different angles. When the user presses the button of the range hood, the smoke collecting plate will shake, which reduces the user experience. Summary of the invention

[0004] In view of the shortcomings of the existing methods, the present application provides a smoke collecting structure and a control method thereof, so as to solve the technical problem in the prior art that when the user presses the button of the range hood, the smoke collecting plate shakes, thereby reducing the user experience.

[0005] In the first aspect, the embodiment of the present application provides a smoke collection structure, which is applied to a range hood, and the smoke collection structure mainly includes a smoke collection hood, a smoke collection plate and a drive assembly. A plurality of latching structures are arranged inside the smoke collection hood; the smoke collection plate is arranged on one side of the smoke collection hood and can rotate relative to the smoke collection hood; the drive assembly includes a connected drive motor and a transmission member; the transmission member is arranged in the smoke collection hood and connected to the smoke collection plate; the drive motor drives the transmission member to move to drive the smoke collection plate to rotate, and when the transmission member moves to abut against any of the latching structures, the drive motor self-locks.

[0006] As an optional embodiment, the smoke-holding structure also includes a locking component, which is arranged on one side of the driving component, and the locking component includes a connected locking motor and a locking member; the locking member has a locking arm, and the locking arm serves as the locking structure; the locking motor drives the locking member to move to adjust the relative position of the locking arm and the transmission member.

[0007] As an optional embodiment, the transmission member includes an abutment arm for abutting against the locking arm; the smoke collecting plate moves between a closed position, an open position for a conventional gear, and an open position for a stir-frying gear; the opening and closing angle of the smoke collecting plate in the stir-frying gear open position is greater than the opening and closing angle in the conventional gear open position; when the abutment arm abuts against the locking arm, the smoke collecting plate is located in the conventional gear open position.

[0008] As an optional implementation, the transmission member further includes a roller, which is disposed at the end of the abutment arm and is used to abut against the locking arm.

[0009] As an optional embodiment, the smoke collecting structure also includes a mounting seat, which is arranged in the smoke collecting hood, and the mounting seat is formed with a limiting portion for abutting against the transmission member, and the limiting portion also serves as the locking structure; the driving assembly and the locking assembly are both installed on the mounting seat; when the limiting portion abuts against the locking member, the smoke collecting plate is located in the open position of the stir-frying gear.

[0010] As an optional implementation, the locking arm includes a first arm and a second arm that are spaced apart; the locking motor drives the locking member to rotate to drive the first arm and the second arm to rotate synchronously.

[0011] As an optional embodiment, the transmission member further comprises a first transmission member and a second transmission member. The first transmission member is connected to the driving motor, and comprises a transmission arm and the abutment arm which are arranged at intervals; the second transmission member is rotatably connected to the transmission arm, and the second transmission member is also connected to the smoke collecting plate.

[0012] As an optional embodiment, the transmission member further includes an abutment protrusion or an abutment recess for abutting and cooperating with the limiting portion, and the abutment protrusion or the abutment recess is arranged on a side of the transmission arm opposite to the abutment arm.

[0013] As an optional implementation, the mounting seat further includes a limiting arm, which is arranged on two opposite sides of the locking member to limit the rotation angle of the locking member.

[0014] In a second aspect, an embodiment of the present application provides a range hood comprising the smoke collecting structure described in any one of the aforementioned embodiments.

[0015] As an optional embodiment, the range hood further includes a fume concentration monitoring device, a fume exhaust fan and a controller. The fume concentration monitoring device is installed on the fume collecting hood of the fume collection structure; the controller connects and controls the fume exhaust fan, the fume concentration monitoring device, the driving component and the positioning component of the fume collection structure.

[0016] In the third aspect, an embodiment of the present application provides a control method for the smoke collection structure described in the aforementioned embodiment, which mainly includes: obtaining the current oil smoke concentration; obtaining the current first position information of the drive component; obtaining the current second position information of the locking structure; and outputting the current driving instruction for the drive component, the current locking instruction for the locking structure and the current gear instruction for the smoke exhaust fan according to the current oil smoke concentration, the current first position information, the current second position information and preset instruction output rules.

[0017] As an optional implementation, according to the current oil fume concentration, the current first position information, the current second position information and a preset instruction output rule, the current driving instruction for the driving component, the current locking instruction for the locking structure and the current gear instruction for the smoke exhaust fan are output, including: comparing the current oil fume concentration with the preset first oil fume concentration and the preset second oil fume concentration; the second oil fume concentration is greater than the first oil fume concentration; according to the correspondence between the obtained comparison result and the preset comparison result, the first position information, the second position information, the driving instruction, the locking instruction and the gear instruction, the current driving instruction, the current locking instruction and the current gear instruction corresponding to the current comparison result, the current first position information and the current second position information are output.

[0018] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be running in a low gear.

[0019] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the low gear operation.

[0020] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the low gear operation.

[0021] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current locking instruction is to be located at the large-angle matching position, and the current gear information is to be operated at the high gear.

[0022] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the high gear operation.

[0023] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high-speed gear operation.

[0024] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at a small angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is to move to a large angle matching position, and the current gear information is to operate in a high-end position.

[0025] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at a large-angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be operated at a high gear.

[0026] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the output current driving instruction is located at the stir-fry gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high-end position.

[0027] The present application provides a smoke collecting structure, a range hood, and a range hood control method. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0028] The driving motor drives the transmission member to move and drives the cigarette collecting plate to rotate. After the transmission member moves to abut against any of the locking structures, the driving motor changes from the driving state to the stopping state under the action of the abutment of the locking structure. The loose gap of the driving motor, as well as the loose gap between the locking structure and the transmission member, gradually decrease until the loose gap disappears, and the driving motor stops and remains in a self-locking state. At this time, the self-locking driving motor, the abutting locking structure and the transmission member all provide sufficient support for the cigarette collecting plate. When the user presses the function button, the cigarette collecting plate remains stable, ensuring that the user has a better operating (tactile) experience and visual experience during operation.

[0029] In addition, the opening angle of the smoke collecting plate can be adjusted dynamically in real time according to the current oil smoke concentration, which can bring better smoking effects in various scenarios, and can suppress noise to the maximum extent, bringing users a better auditory experience.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 A schematic diagram of the structure of a smoke collecting structure provided in an embodiment of the present application when a smoke collecting plate is in a closed position;

[0033] Figure 2 A schematic diagram of the structure of a smoke collecting structure provided in an embodiment of the present application when the smoke collecting plate is located in a conventional open position and the locking member is located in a small angle matching position;

[0034] Figure 3 A schematic diagram of the structure of a smoke collecting structure provided in an embodiment of the present application when the smoke collecting plate is located in a conventional open position and the locking member is located in a large-angle matching position;

[0035] Figure 4 A schematic diagram of the structure of a smoke collecting structure provided in an embodiment of the present application when the smoke collecting plate is located in the open position of the stir-fry gear and the locking member is located in the large-angle matching position;

[0036] Figure 5 A schematic diagram of the connection relationship between a mounting seat, a driving assembly and a locking assembly in a smoke collecting structure provided in an embodiment of the present application;

[0037] Figure 6A schematic diagram of the connection relationship between a mounting seat, a driving assembly and a locking assembly in a smoke collecting structure provided in another embodiment of the present application;

[0038] Figure 7 A schematic diagram of the structure of a range hood provided in an embodiment of the present application;

[0039] Figure 8 A flow chart of a range hood control method provided in an embodiment of the present application.

[0040] Reference numerals and corresponding descriptions:

[0041] 1: Fume hood;

[0042] 2: Smoke collecting plate;

[0043] 3: driving assembly; 31: driving motor; 32: transmission member; 321: roller; 322: first transmission member; 3221: abutting arm; 3222: transmission arm; 3223: abutting convex portion; 323: second transmission member;

[0044] 4: locking assembly; 41: locking motor; 42: locking member; 421: first arm; 422: second arm;

[0045] 5: mounting seat; 51: limiting portion; 52: limiting arm; 53: mounting shell;

[0046] 6: Fume concentration monitoring device;

[0047] 7: Smoke exhaust fan. DETAILED DESCRIPTION

[0048] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0049] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0050] like Figure 1-6As shown, an embodiment of the present application provides a smoke collecting structure, which is applied to a range hood. The smoke collecting structure mainly includes a smoke collecting hood 1, a smoke collecting plate 2 and a driving assembly 3. A plurality of latching structures are arranged inside the smoke collecting hood 1; the smoke collecting plate 2 is arranged on one side of the smoke collecting hood 1, and the smoke collecting plate 2 can rotate relative to the smoke collecting hood 1; the driving assembly 3 includes a connected driving motor 31 and a transmission member 32; the transmission member 32 is arranged in the smoke collecting hood 1 and connected to the smoke collecting plate 2; the driving motor 31 drives the transmission member 32 to move to drive the smoke collecting plate 2 to rotate, and when the transmission member 32 moves to abut against any latching structure, the driving motor 31 self-locks.

[0051] In this embodiment, a accommodating cavity is formed inside the smoke collecting hood 1, and a smoke inlet connected to the accommodating cavity is provided at the lower part of the smoke collecting hood 1. The smoke collecting hood 1 is equipped with a function button, which is arranged above the smoke inlet. The function button can also be installed on the smoke collecting plate 2. The smoke collecting plate 2 is arranged outside the smoke inlet. The driving assembly 3 is used to drive the smoke collecting plate 2 to flip outward or inward relative to the smoke collecting hood 1 to correspondingly realize opening or closing, and adjust the smoke intake of the smoke inlet by adjusting the opening position of the smoke collecting plate 2, that is, the flipping angle of the smoke collecting plate 2 relative to the smoke inlet. The corresponding opening position (for example, the opening position of the conventional gear and the opening position of the stir-frying gear) can be preset for the smoke collecting plate 2 according to the working gear of the gas stove (for example, the conventional gear and the stir-frying gear), that is, it has a corresponding opening degree. The opening degree of the smoke collecting plate 2 in the stir-frying gear opening position is greater than the opening degree of the conventional gear opening position. The driving assembly 3 can drive the smoke collecting plate 2 to rotate. When the transmission member 32 abuts against the corresponding positioning structure, the smoke collecting plate 2 is located in the conventional open position or the stir-fry open position.

[0052] In the smoke-collecting structure provided in the embodiment of the present application, the driving motor 31 drives the transmission member 32 to move and drive the smoke-collecting plate 2 to rotate. After the transmission member 32 moves to abut against any one of the locking structures, the driving motor 31 changes from a driving state to a stopped state under the action of the abutment of the locking structure. The loose gap of the driving motor 31, as well as the loose gap between the locking structure and the transmission member 32, gradually decrease until the loose gap disappears, and the driving motor 31 stops and remains in a self-locking state. At this time, the self-locking driving motor 31, as well as the abutting locking structure and the transmission member 32, all provide sufficient support for the smoke-collecting plate 2. When the user presses the function button, the smoke-collecting plate 2 remains stable, ensuring that the user has a better operating (tactile) experience and visual experience during operation.

[0053] like Figure 1-6 As shown, as an optional embodiment, the cigarette holding structure further includes a positioning assembly 4, which is arranged on one side of the driving assembly 3. The positioning assembly 4 includes a positioning motor 41 and a positioning member 42 connected to each other; the positioning member 42 has a positioning arm, and the positioning arm serves as a positioning structure; the positioning motor 41 drives the positioning member 42 to move to adjust the relative position of the positioning arm and the transmission member 32.

[0054] Based on the above embodiments, in this embodiment, the blocking motor 41 provides power for the movement of the blocking member 42. The blocking motor 41 drives the blocking member 42 to move, and the blocking arm moves synchronously, and the blocking arm moves to a preset blocking position, that is, a position abutting against the transmission member 32. Adjusting the relative position of the blocking arm and the transmission member 32 is also used to avoid the contact between the blocking arm and the transmission member 32, so as to achieve avoidance.

[0055] like Figure 1-6 As shown, as an optional embodiment, the transmission member 32 includes an abutment arm 3221 for abutting against the locking arm; the smoke collecting plate 2 moves between a closed position, an open position for the conventional gear and an open position for the stir-frying gear; the opening and closing angle of the smoke collecting plate 2 in the open position for the stir-frying gear is greater than the opening and closing angle in the open position for the conventional gear; when the abutment arm 3221 abuts against the locking arm, the smoke collecting plate 2 is located in the open position for the conventional gear.

[0056] Based on the above embodiments, in this embodiment, when the blocking arm abuts against the abutment arm 3221, the smoke collecting plate 2 stays in the normal gear open position. When the smoke collecting plate 2 is in the closed position or the stir-fry gear open position, the abutment arm 3221 is not connected to the blocking arm. When the smoke collecting plate 2 is rotating toward the stir-fry gear open position or toward the closed position, the blocking member 42 avoids the transmission member 32.

[0057] The smoke collecting plate 2 can stay in the closed position, the conventional gear open position or the stir-fry gear open position, and the transmission member 32 and the stopper 42 are respectively located at corresponding positions. Specifically, when the transmission member 32 is located at the preset initial position and the stopper 42 is located at the preset small angle matching position, the smoke collecting plate 2 is located in the closed position, and the transmission member 32 and the stopper 42 are not in contact; when the transmission member 32 is located at the preset conventional gear abutment position and the stopper 42 is located at the small angle matching position or the preset large angle matching position, the smoke collecting plate 2 is located in the conventional gear open position, and the transmission member 32 and the stopper 42 are in contact; when the transmission member 32 is located at the preset stir-fry gear abutment position and the stopper 42 is located at the large angle matching position, the smoke collecting plate 2 is located in the stir-fry gear open position, and the transmission member 32 and the stopper 42 are not in contact.

[0058] It should be noted that the "small angle" in the "small angle matching position" of the clamping member 42 and the "large angle" in the "large angle matching position" are both for the opening and closing angles of the smoke collecting plate 2. Specifically, the "small angle" is for the switching of the smoke collecting plate 2 between the conventional gear opening position and the closed position; the "large angle" is for the switching of the smoke collecting plate 2 between the conventional gear opening position and the stir-frying gear opening position; when the smoke collecting plate 2 is in the conventional gear opening position, the clamping member 42 can be in the "small angle matching position" or in the "large angle matching position", and the specific movement should refer to the position of the transmission member 32. The clamping member 42 has two functions, one is to abut against the transmission member 32, and the other is to avoid the transmission member 32; more specifically, when the clamping member 42 is in the "small angle matching position", it is used to abut against the transmission member 32 or avoid the transmission member 32. Similarly, when the clamping member 42 is in the "large angle matching position", it is used to abut against the transmission member 32 or avoid the transmission member 32. For details, please refer to the following embodiments.

[0059] like Figure 1-6 As shown, as an optional implementation, the transmission member 32 further includes a roller 321, and the roller 321 is disposed at the end of the abutting arm 3221 for abutting against the locking arm.

[0060] Based on the above embodiments, in this embodiment, the roller 321 is arranged on the side of the end of the locking arm. When the roller 321 is in contact with the locking arm, as the loose gap gradually decreases, the roller 321 gradually rolls to form a "soft" contact with the locking arm to avoid damage to components caused by "hard" contact.

[0061] like Figure 1-6 As shown, as an optional embodiment, the smoke collecting structure also includes a mounting seat 5, which is arranged in the smoke collecting hood 1, and the mounting seat 5 is formed with a limiting portion 51 for abutting against the transmission member 32, and the limiting portion 51 also serves as a locking structure; the driving component 3 and the locking component 4 are both installed on the mounting seat 5; when the limiting portion 51 abuts against the locking member 42, the smoke collecting plate 2 is located in the open position of the stir-frying gear.

[0062] Based on the above embodiments, in this embodiment, the mounting seat 5 is fixed to the smoke hood 1, for example, the mounting seat 5 is fixed to the top of the smoke hood 1 by bolts. The mounting seat 5 includes a mounting shell 53, and one side of the mounting shell 53 is open. The drive motor 31 and the positioning motor 41 can both be reversible motors, that is, forward or reverse rotation can be achieved by controlling the current. The drive motor 31 and the positioning motor 41 are both arranged on the inner side of the mounting shell 53, and the transmission member 32 and the positioning member 42 are arranged on the outer side of the mounting shell 53. The output shafts of the drive motor 31 and the positioning motor 41 pass through the shell wall of the mounting shell 53 to be respectively connected to the transmission member 32 and the positioning member 42. The limiting portion 51 can be a convex plate on the mounting shell 53, and the convex plate protrudes from the outer side of the mounting shell 53. The limiting portion 51 can also limit the notch on the convex plate. The limiting portion 51 and the drive assembly 3 are both arranged higher than the positioning assembly 4. When the transmission member 32 is located at the abutting position of the stir-frying gear, the transmission member 32 abuts against the limiting portion 51. The shape and position of the limiting portion 51 can be set according to actual conditions.

[0063] like Figure 1-6 As shown, as an optional implementation, the locking arm includes a first arm 421 and a second arm 422 that are spaced apart; the locking motor 41 drives the locking member 42 to rotate to drive the first arm 421 and the second arm 422 to rotate synchronously.

[0064] Based on the above embodiments, in this embodiment, the main body of the locking member 42 is in a plate shape, and the locking member 42 is vertically connected to the output shaft of the locking motor 41 so that the locking motor 41 drives the locking member 42 to rotate.

[0065] In some embodiments, the first arm 421 and the second arm 422 are arranged front and back, the first arm 421 is located at the front side, and the second arm 422 is located at the rear side. The positioning motor 41 drives the positioning member 42 to rotate forward or backward. The shape of the positioning member 42 is similar to a fork, and the shape and layout of the first arm 421 and the second arm 422 are not specifically limited. The first arm 421 and the second arm 422 are both used to abut against the transmission member 32. When the first arm 421 or the second arm 422 abuts against the abutment arm 3221, the smoke collecting plate 2 is located in the normal gear open position.

[0066] like Figure 1-6 As shown, as an optional embodiment, the transmission member 32 further includes a first transmission member 322 and a second transmission member 323. The first transmission member 322 is connected to the driving motor 31, and includes a transmission arm 3222 and an abutment arm 3221 that are spaced apart; the second transmission member 323 is rotatably connected to the transmission arm 3222, and the second transmission member 323 is also connected to the smoke collecting plate 2.

[0067] Based on the above embodiments, in this embodiment, the first transmission member 322 is plate-shaped, and the first transmission member 322 is vertically connected to the output shaft of the driving motor 31, so that the driving motor 31 drives the first transmission member 322 to rotate, for example, forward or backward. The shape of the first transmission member 322 is also similar to a shift fork, and the shape and layout of the transmission arm 3222 and the abutment arm 3221 are not specifically limited.

[0068] The second transmission member 323 is in the shape of an elongated strip, and the second transmission member 323 can be in the shape of an elongated rod or an elongated sheet. The two ends of the second transmission member 323 are rotatably connected to the transmission arm 3222 and the cigarette collecting plate 2, respectively. In some embodiments, the second transmission member 323 pushes the cigarette collecting plate 2 forward to rotate outward or pulls the cigarette collecting plate 2 backward to rotate inward. The first transmission member 322, the second transmission member 323 and the cigarette collecting plate 2 are transmission-connected. It should be noted that the aforementioned transmission member 32 is located in the conventional gear abutment position mainly to emphasize the position of the abutment arm 3221.

[0069] like Figure 1-6 As shown, in some embodiments, the driving motor 31 drives the first transmission member 322 to transmit forward, and the first transmission member 322 rotates from the initial position to the conventional gear abutment position first, and then rotates to the stir-fry gear abutment position; on the contrary, the driving motor 31 drives the first transmission member 322 to transmit backward, and the first transmission member 322 rotates from the stir-fry gear abutment position to the conventional gear abutment position first, and then rotates to the initial position. When the first transmission member 322 is located at the initial position, the abutment arm 3221 is higher than the transmission arm 3222. In order to avoid the abutment arm 3221 located at a high position, an accommodating space formed by an upward depression is formed on the inner side of the top wall of the smoke hood 1. In some embodiments, a shell portion protruding upward is formed on the outer side of the top wall of the smoke hood 1, and the shell portion contains an accommodating space.

[0070] like Figure 1-6 As shown, as an optional embodiment, the transmission member 32 also includes an abutment protrusion 3223 or an abutment recess for abutting and cooperating with the limiting portion 51, and the abutment protrusion 3223 or the abutment recess is arranged on the side of the transmission arm 3222 opposite to the abutment arm 3221.

[0071] Based on the aforementioned embodiments, in this embodiment, the abutting protrusion 3223 or the abutting recess is formed on the first transmission member 322, and the abutting protrusion 3223 or the abutting recess moves synchronously with the first transmission member 322. The abutting protrusion 3223 is a triangular sheet structure. When the abutting protrusion 3223 abuts against the limiting portion 51, the limiting portion 51 abuts against the edge of the abutting protrusion 3223 away from the transmission arm 3222. In some embodiments, the abutting recess is adapted to the limiting portion 51. It should be noted that the aforementioned transmission member 32 is located at the abutting position of the stir-fry gear mainly to emphasize the position where the abutting protrusion 3223 or the abutting recess is located.

[0072] like Figure 1-6 As shown, as an optional implementation, the mounting seat 5 further includes a limiting arm 52 , and the limiting arm 52 is disposed on two opposite sides of the locking member 42 to limit the rotation angle of the locking member 42 .

[0073] Based on the above embodiments, in this embodiment, the mounting seat 5 further includes a limiter, which is fixed to the mounting shell 53. The limiter includes a plate-shaped body, which is provided with two relatively far limiter arms 52, which are connected to the plate-shaped body at an angle. The clamping member 42 is installed between the two limiter arms 52, and the clamping member 42 will abut against the limiter arms 52 when rotating clockwise or counterclockwise to limit the rotation angle of the clamping member 42.

[0074] The locking member 42 moves between the small angle matching position and the large angle matching position. In some embodiments, the two limiting arms 52 are arranged in the front and rear directions. When the lower part of the locking member 42 abuts against the front limiting arm 52, the locking member 42 is located in the small angle matching position, and the rear side of the first arm 421 abuts against the roller 321 of the abutting arm 3221; the locking member 42 rotates forward from the small angle matching position, and when the lower part of the locking member 42 abuts against the rear limiting arm 52, the locking member 42 is located in the large angle matching position, and the front side of the second arm 422 abuts against the roller 321 of the abutting arm 3221.

[0075] In some embodiments, if the smoke collecting plate 2 moves directly from the closed position to the stir-fry open position, when the abutment arm 3221 of the first transmission member 322 rotates between the first arm 421 and the second arm 422, or moves to abut the first arm 421, the locking member 42 rotates forward and moves from the small-angle matching position to the large-angle matching position to avoid the abutment arm 3221, otherwise the abutment arm 3221 will always be stuck in the first arm 421. The first transmission member 322 continues to rotate forward until the first transmission member 322 abuts against the abutting portion, so that the cigarette holding plate 2 moves to the stir-frying gear open position; on the contrary, if the cigarette holding plate 2 moves directly from the stir-frying gear open position to the closed position, when the abutting arm 3221 of the first transmission member 322 rotates to between the first arm 421 and the second arm 422, or moves to abut the second arm 422, the blocking member 42 rotates backward from the large angle matching position to the small angle matching position to avoid the abutting arm 3221, otherwise the abutting arm 3221 will be stuck in the second arm 422. The first transmission member 322 continues to rotate backward until the cigarette holding plate 2 moves to the closed position.

[0076] If the smoke collecting plate 2 moves directly from the closed position to the normal open position, the abutment arm 3221 abuts against the first arm 421, so that the smoke collecting plate 2 stays in the normal open position; if the smoke collecting plate 2 moves directly from the stir-fry open position to the normal open position, the abutment arm 3221 abuts against the second arm 422, so that the smoke collecting plate 2 stays in the normal open position.

[0077] like Figure 1-7 As shown, based on the same inventive concept, an embodiment of the present application provides a range hood, which includes the smoke collecting structure of any one of the aforementioned embodiments.

[0078] In the range hood provided in the embodiment of the present application, the driving motor 31 drives the transmission member 32 to move and drive the smoke collecting plate 2 to rotate. After the transmission member 32 moves to abut against any one of the locking structures, the driving motor 31 changes from a driving state to a stopped state under the action of the abutment of the locking structure. The loose gap of the driving motor 31, as well as the loose gap between the locking structure and the transmission member 32, gradually decrease until the loose gap disappears, and the driving motor 31 stops and remains in a self-locking state. At this time, the self-locking driving motor 31, as well as the abutting locking structure and the transmission member 32, all provide sufficient support for the smoke collecting plate 2. When the user presses the function button, the smoke collecting plate 2 remains stable, ensuring that the user has a better operating (tactile) experience and visual experience during operation.

[0079] like Figure 1-7 As shown, as an optional embodiment, the range hood further includes a fume concentration monitoring device 6, a fume exhaust fan 7 and a controller. The fume concentration monitoring device 6 is installed on the fume collecting hood 1 of the smoke collecting structure; the controller connects and controls the fume exhaust fan 7, the fume concentration monitoring device 6, the driving component 3 and the locking component 4 of the smoke collecting structure.

[0080] When the range hood is working, the smoke collecting plate 2 is opened in a fixed position, which generally brings a good smoke extraction effect. However, for scenes with heavy smoke, it is generally necessary to increase the speed of the smoke exhaust fan 7 as an auxiliary to prevent the smoke from escaping. However, the higher the speed of the smoke exhaust fan 7, the greater the air volume, and the greater the noise, which is likely to bring a bad user experience.

[0081] Based on the foregoing embodiments, in this embodiment, the oil fume concentration monitoring device 6 is used to detect the current oil fume concentration. The smoke concentration detection device is installed at the lower part of the smoke hood 1; optionally, the smoke concentration detection device is an optical oil fume concentration detector. The smoke exhaust fan 7 is installed above the smoke hood 1, and the smoke exhaust fan 7 has high-speed operation and low-speed operation modes. The controller can automatically adjust the opening position of the smoke collecting plate 2 and the operation mode of the smoke exhaust fan 7 according to the current oil fume concentration, thereby ensuring the smoking capacity while generating less noise and improving the user experience. For details, please refer to the following embodiments.

[0082] like Figure 8 As shown, based on the same inventive concept, the embodiment of the present application provides a control method for a range hood, the method mainly comprising steps S1-S4:

[0083] Step S1: obtaining the current oil smoke concentration;

[0084] Step S2: obtaining the current first position information of the driving component 3;

[0085] Step S3: Acquire the current second position information of the locking structure;

[0086] Step S4: output the current driving instruction for the driving component 3, the current positioning instruction for the positioning structure and the current gear position instruction for the smoke exhaust fan 7 according to the current oil smoke concentration, the current first position information, the current second position information and the preset instruction output rule.

[0087] Based on the above-mentioned embodiments, in this embodiment, the current oil fume concentration in step S1 is acquired in real time by the oil fume concentration monitoring device 6 after the smoke shielding plate 2 is opened, and the user can open the smoke shielding plate 2 through a function button.

[0088] The first position information in step S2 can be determined according to the power-on record information of the driving motor 31; optionally, the first position information at least includes a preset conventional gear abutment position and a preset stir-fry gear abutment position.

[0089] The second position information in step S3 is the position information of the locking component 2, which can be determined according to the power-on record information of the locking motor 41; optionally, the second position information at least includes a preset small-angle matching position and a preset large-angle matching position.

[0090] The driving instruction in step S4 is used to control the driving motor 31 to drive the transmission member 32 to move or remain stationary; optionally, the driving instruction at least includes moving to the normal gear abutment position, moving to the stir-fry gear abutment position, being at the normal gear abutment position and being at the stir-fry gear abutment position.

[0091] The locking instruction in step S4 is used for the locking motor 41 to drive the locking member 42 to move or remain different. Optionally, the locking instruction at least includes moving to a small angle matching position, being at a large angle matching position, being at a small angle matching position and being at a large angle matching position.

[0092] The gear position instruction in step S4 is used to adjust the working operation mode of the smoke exhaust fan 7; optionally, the gear position instruction includes high-gear operation and low-gear operation.

[0093] The control method of the range hood provided in the embodiment of the present application can dynamically adjust the opening angle of the smoke collecting plate 2 in real time according to the current oil fume concentration, which can bring better smoking effects in various scenarios and can suppress noise to the maximum extent, bringing better auditory experience to users.

[0094] As an optional implementation, in the aforementioned step S4, according to the current oil smoke concentration, the current first position information, the current second position information and the preset command output rule, the current driving command for the driving component 3, the current locking command for the locking structure and the current gear command for the exhaust fan 7 are output, including:

[0095] Comparing the current oil smoke concentration with a preset first oil smoke concentration and a preset second oil smoke concentration; the second oil smoke concentration is greater than the first oil smoke concentration;

[0096] According to the correspondence between the obtained comparison result and the preset comparison result, the first position information, the second position information, the drive instruction, the locking instruction and the gear instruction, the current drive instruction, the current locking instruction and the current gear instruction corresponding to the current comparison result, the current first position information and the current second position information are output.

[0097] Based on the above embodiments, in this embodiment, the second oil fume concentration is greater than the first oil fume concentration. The preset comparison results include three comparison results: the current oil fume concentration is less than the first oil fume concentration, the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, and the current oil fume concentration is greater than the second oil fume concentration.

[0098] As shown in the corresponding relationship between the comparison result, the first position information, the second position information, the driving instruction, the locking instruction and the gear instruction preset in Table 1 below, there are at least nine corresponding relationships.

[0099] Table 1 Preset correspondence between comparison result, first position information, second position information, drive instruction, position instruction and gear instruction

[0100]

[0101]

[0102] Next, the nine corresponding relationships are explained in detail.

[0103] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be running in a low gear.

[0104] Based on the above embodiment, the user can turn on the range hood through the function button, and the range hood will open the smoke shielding plate 2 after it is turned on. The smoke shielding plate 2 will obtain the current smoke concentration in real time after it is opened, that is, the smoke shielding plate 2 will definitely move to a preset position after it is opened, and the preset position is one of the conventional gear opening position and the stir-fry gear opening position. This embodiment is the control logic of rotating the smoke shielding plate 2 from the stir-fry gear opening position to the conventional gear opening position after it is in the stir-fry gear opening position.

[0105] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the low gear operation.

[0106] Based on the above-mentioned embodiments, this embodiment provides control logic that after the smoke collecting plate 2 moves from the closed position to the normal gear open position, the position remains unchanged and the smoke exhaust fan 7 is in the low gear operation mode.

[0107] As an optional implementation, if the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the low gear operation.

[0108] Based on the foregoing embodiments, this embodiment provides control logic that the smoke collecting plate 2 remains in the same position after being moved from the stir-frying gear open position to the conventional gear open position, and the smoke exhaust fan 7 is in the low gear operation mode.

[0109] The above three embodiments are when the current oil smoke concentration is low, and a better smoking effect is achieved by the cooperation of the smoke collecting plate 2 being in the normal open position and the smoke exhaust fan 7 being in the low gear position (low air volume).

[0110] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be operated in the high gear.

[0111] Based on the above-mentioned embodiments, this embodiment is the control logic that after the smoke collecting plate 2 is in the stir-frying gear opening position, it rotates from the stir-frying gear opening position to the conventional gear opening position, and the smoke exhaust fan 7 is in the high-speed operation mode.

[0112] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the high gear operation.

[0113] Based on the above-mentioned embodiments, the present embodiment is a control logic in which the smoke collecting plate 2 is kept in the normal open position and the smoke exhaust fan 7 is in the high-speed operation mode.

[0114] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the conventional gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high-speed gear operation.

[0115] Based on the above-mentioned embodiments, the present embodiment is a control logic in which the smoke collecting plate 2 is kept in the normal open position and the smoke exhaust fan 7 is in the high-speed operation mode.

[0116] The above three embodiments are when the current oil smoke concentration rises to a relatively high level, and a better smoking effect is achieved by the cooperation of the smoke collecting plate 2 being in the conventional open position and the smoke exhaust fan 7 being in the high-speed position (high air volume).

[0117] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the small angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is to move to the large angle matching position, and the current gear information is to operate in the high gear.

[0118] Based on the foregoing embodiments, in this embodiment, after the smoke collecting plate 2 is located in the conventional open position, it is rotated from the stir-fry open position to the stir-fry open position, and the smoke exhaust fan 7 is in the high-speed operation mode of the control logic.

[0119] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is located at the large-angle matching position, and the current gear information is located at the high-end position.

[0120] Based on the above embodiments, this embodiment is the control logic that after the smoke collecting plate 2 is located in the normal gear open position, it rotates from the stir-fry gear open position to the stir-fry gear open position, and the smoke exhaust fan 7 is in the high gear operation mode.

[0121] As an optional implementation, if the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the stir-fry gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high-end position.

[0122] Based on the aforementioned embodiments, the present embodiment is a control logic in which the smoke collecting plate 2 remains in the open position of the stir-frying gear and the smoke exhaust fan 7 is in the high-speed operating mode.

[0123] The above three embodiments are when the current oil smoke concentration rises to a higher level, the smoke collecting plate 2 is in the stir-frying gear open position, and the smoke collecting area is expanded compared to the conventional gear open position, and the oil smoke on the outer side can also be guided to the smoking port by the smoke collecting plate 2 after rising, so the smoking efficiency is improved. The smoke exhaust fan 7 can be operated in a high-end position without further increasing the air volume, and the noise will not increase further, thereby bringing a better auditory experience to the user.

[0124] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0125] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0126] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0127] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0128] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0129] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A smoke collecting structure, applied to a range hood, characterized in that: include: A smoke collecting hood (1) is provided with a plurality of latching structures inside; A smoke collecting plate (2) is arranged on one side of the smoke collecting hood (1) and is rotatable relative to the smoke collecting hood (1); A drive assembly (3) comprises a drive motor (31) and a transmission member (32) connected to each other; the transmission member (32) is arranged in the smoke collecting hood (1) and connected to the smoke collecting plate (2); the drive motor (31) drives the transmission member (32) to move so as to drive the smoke collecting plate (2) to rotate, and when the transmission member (32) moves to abut against any of the locking structures, the drive motor (31) self-locks.

2. The smoke-binding structure according to claim 1, characterized in that: The smoke collecting structure further comprises: A locking assembly (4) is arranged on one side of the driving assembly (3), and the locking assembly (4) comprises a locking motor (41) and a locking member (42) connected to each other; the locking member (42) has a locking arm, and the locking arm serves as the locking structure; the locking motor (41) drives the locking member (42) to move, so as to adjust the relative position of the locking arm and the transmission member (32).

3. The smoke-binding structure according to claim 2, characterized in that: The transmission member (32) comprises an abutment arm (3221) for abutting against the locking arm; The smoke collecting plate (2) moves between a closed position, a conventional gear open position and a stir-fry gear open position; the opening and closing angle of the smoke collecting plate (2) in the stir-fry gear open position is greater than the opening and closing angle in the conventional gear open position; When the abutment arm (3221) abuts against the locking arm, the smoke collecting plate (2) is located in the normal open position.

4. The smoke-binding structure according to claim 3, characterized in that: The transmission member (32) further comprises: The roller (321) is arranged at the end of the abutment arm (3221) and is used for abutting against the positioning arm.

5. The smoke-binding structure according to claim 3, characterized in that: Also includes: A mounting seat (5) is arranged in the smoke collecting hood (1), the mounting seat (5) being formed with a limiting portion (51) for abutting against the transmission member (32), the limiting portion (51) also serving as the locking structure; The driving assembly (3) and the locking assembly (4) are both mounted on the mounting seat (5); when the limiting portion (51) abuts against the locking member (42), the smoke collecting plate (2) is located in the stir-frying gear open position.

6. The smoke-binding structure according to claim 5, characterized in that: The locking arm comprises a first arm (421) and a second arm (422) which are arranged at an interval; The locking motor (41) drives the locking member (42) to rotate so as to drive the first arm (421) and the second arm (422) to rotate synchronously.

7. The smoke-binding structure according to claim 6, characterized in that: The transmission member (32) further comprises: A first transmission member (322) connected to the driving motor (31), the first transmission member (322) comprising a transmission arm (3222) and the abutment arm (3221) which are arranged at intervals; The second transmission member (323) is rotatably connected to the transmission arm (3222), and the second transmission member (323) is also connected to the smoke collecting plate (2).

8. The smoke-binding structure according to claim 7, characterized in that: The transmission member (32) further comprises an abutting protrusion (3223) or an abutting recess for abutting and cooperating with the limiting portion (51); the abutting protrusion (3223) or the abutting recess is arranged on a side of the transmission arm (3222) opposite to the abutting arm (3221).

9. The smoke-binding structure according to claim 6, characterized in that: The mounting seat (5) further comprises: The limiting arms (52) are arranged on two opposite sides of the locking member (42) to limit the rotation angle of the locking member (42).

10. A range hood, characterized in that: include: The smoke-binding structure according to any one of claims 1 to 9.

11. The range hood according to claim 10, characterized in that: Also includes: A smoke concentration monitoring device (6) installed on the smoke collecting hood (1) of the smoke collecting structure; Smoke exhaust fan (7); A controller is connected to and controls the smoke exhaust fan (7), the oil smoke concentration monitoring device (6), the driving component (3) and the locking component (4) of the smoke collecting structure.

12. A control method for a range hood as claimed in claim 11, characterized in that: include: Get the current oil smoke concentration; Acquiring current first position information of the driving component (3); Obtain the current second position information of the card position structure; According to the current oil smoke concentration, the current first position information, the current second position information and a preset command output rule, a current drive command for the drive component (3), a current locking command for the locking structure and a current gear position command for the smoke exhaust fan (7) are output.

13. The control method of the range hood according to claim 12, characterized in that: Outputting a current drive instruction for the drive component (3), a current locking instruction for the locking structure, and a current gear position instruction for the smoke exhaust fan (7) according to the current oil smoke concentration, the current first position information, the current second position information, and a preset instruction output rule, including: Comparing the current oil fume concentration with a preset first oil fume concentration and a preset second oil fume concentration; the second oil fume concentration is greater than the first oil fume concentration; According to the correspondence between the obtained comparison result and the preset comparison result, the first position information, the second position information, the drive instruction, the locking instruction and the gear instruction, the current drive instruction, the current locking instruction and the current gear instruction corresponding to the current comparison result, the current first position information and the current second position information are output.

14. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be running in a low gear.

15. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the normal gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the normal gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the low gear operation.

16. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is less than the first oil fume concentration, the first position information is located at the normal gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the normal gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the low gear operation.

17. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the conventional gear abutment position, the current positioning instruction is to be located at the large-angle matching position, and the current gear information is to be running in the high gear.

18. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the normal gear abutment position, and the second position information is located at the small angle matching position, then the output current drive instruction is located at the normal gear abutment position, the current locking instruction is located at the small angle matching position, and the current gear information is located at the high gear operation.

19. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than or equal to the first oil fume concentration and less than the second oil fume concentration, the first position information is located at the normal gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the normal gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high gear operation.

20. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at a small angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is to move to the large angle matching position, and the current gear information is to operate in the high gear.

21. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the conventional gear abutment position, and the second position information is located at the large-angle matching position, then the current drive instruction output is to move to the stir-fry gear abutment position, the current positioning instruction is located at the large-angle matching position, and the current gear information is located at the high gear position.

22. The control method of the range hood according to claim 13, characterized in that: If the comparison result is that the current oil fume concentration is greater than the second oil fume concentration, the first position information is located at the stir-fry gear abutment position, and the second position information is located at the large-angle matching position, then the output current drive instruction is located at the stir-fry gear abutment position, the current locking instruction is located at the large-angle matching position, and the current gear information is located at the high-end position.

Images