Smoke gathering structure and range hood

Abstract

The utility model provides a smoke gathering structure and a 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] This utility model relates to the field of kitchen appliance technology, and in particular to a smoke collection structure and a range hood. Background Technology

[0002] Most modern range hoods are designed with a smoke-collecting structure. When the range hood is turned on, the smoke-collecting structure opens the smoke-collecting plate to form a reasonable smoke extraction pattern, resulting in a good smoke extraction effect. When the range hood is turned off, the smoke-collecting structure closes the smoke-collecting plate, making the range hood look simpler, more compact, and more attractive.

[0003] When the range hood is working, the smoke collection plate can open and stop at different angles. When the user presses the button on the range hood, the smoke collection plate will shake, which reduces the user experience. Utility Model Content

[0004] This application addresses the shortcomings of existing methods by providing a smoke collection structure and its control method to solve the technical problem that occurs when the user presses the button on the range hood, causing the smoke collection plate to shake and reducing the user experience.

[0005] Firstly, this application provides a smoke-collecting structure for use in range hoods. The smoke-collecting structure mainly includes a smoke hood, a smoke-collecting plate, and a drive assembly. The smoke hood has multiple locking structures inside; the smoke-collecting plate is located on one side of the smoke hood and can rotate relative to it; the drive assembly includes a drive motor and a transmission component connected to each other; the transmission component is located inside the smoke hood and connected to the smoke-collecting plate; the drive motor drives the transmission component to move, thereby rotating the smoke-collecting plate; when the transmission component moves to abut against any of the locking structures, the drive motor self-locks.

[0006] As an optional implementation, the smoke-collecting structure further includes a positioning component, which is disposed on one side of the driving component. The positioning component includes a positioning motor and a positioning member connected to each other. The positioning member has a positioning arm, which serves as the positioning structure. The positioning motor drives the positioning member to move, thereby adjusting the relative position of the positioning arm and the transmission member.

[0007] As an optional implementation, the transmission component includes an abutting arm for abutting against the locking arm; the smoke-gathering plate moves between a closed position, a normal open position, and a high-heat open position; the opening angle of the smoke-gathering plate in the high-heat open position is greater than the opening angle in the normal open position; when the abutting arm abuts against the locking arm, the smoke-gathering plate is located in the normal open position.

[0008] As an optional implementation, the transmission component further includes a roller disposed at the end of the abutment arm for abutting against the locking arm.

[0009] As an optional implementation, the smoke collection structure further includes a mounting base disposed inside the smoke collection hood. The mounting base has a limiting part for abutting against the transmission member, and the limiting part also serves as the locking structure. The driving component and the locking component are both mounted on the mounting base. When the limiting part abuts against the locking component, the smoke collection plate is located in the open position of the stir-fry setting.

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

[0011] As an optional implementation, the transmission component further includes a first transmission component and a second transmission component. The first transmission component is connected to the drive motor and includes a transmission arm and the abutment arm spaced apart; the second transmission component is rotatably connected to the transmission arm and is also connected to the smoke-collecting plate.

[0012] As an optional implementation, the transmission member further includes an abutting protrusion or abutting recess for engaging with the limiting portion, the abutting protrusion or the abutting recess being disposed on the side of the transmission arm opposite to the abutting arm.

[0013] As an optional implementation, the mounting base further includes limiting arms disposed on opposite sides of the locking member to limit the rotation angle of the locking member.

[0014] Secondly, this application provides a range hood, including a smoke-collecting structure as described in any of the foregoing embodiments, a smoke concentration monitoring device, an exhaust fan, and a controller. The smoke concentration monitoring device is installed on the smoke collection hood of the smoke-collecting structure; the controller is connected to and controls the exhaust fan, the smoke concentration monitoring device, the drive assembly and the positioning assembly of the smoke-collecting structure.

[0015] This application provides a smoke collection structure and a range hood. The technical solution provided by the embodiments of this application brings at least the following beneficial effects:

[0016] During the stage where the drive motor moves the transmission component, causing the smoke-collecting plate to rotate, the transmission component moves to abut against any of the locking structures. Under the action of the locking structure, the drive motor transitions from a driving state to a stopped state. The play in the drive motor, as well as the play between the locking structure and the transmission component, gradually decreases until the play disappears, at which point the drive motor stops and remains in a self-locking state. At this time, the self-locking drive motor, along with the abutting locking structure and transmission component, provides sufficient support for the smoke-collecting plate. When the user presses a function button, the smoke-collecting plate remains stable, ensuring a good tactile and visual experience for the user.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of a smoke-collecting structure provided in an embodiment of this application, showing the smoke-collecting plate in the closed position.

[0020] Figure 2 This is a schematic diagram of a smoke-collecting structure provided in an embodiment of the present application, in which the smoke-collecting plate is in the conventional open position and the locking component is in the small-angle mating position;

[0021] Figure 3 This is a schematic diagram of a smoke collection structure provided in an embodiment of the present application, in which the smoke collection plate is in the conventional open position and the locking component is in the large-angle mating position;

[0022] Figure 4 This is a schematic diagram of a smoke-collecting structure provided in an embodiment of the present application, in which the smoke-collecting plate is located in the open position of the stir-fry setting and the locking component is located in the large-angle mating position;

[0023] Figure 5 This is a schematic diagram showing the connection relationship between the mounting base, the driving component, and the locking component in a smoke collection structure provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram illustrating the connection relationship between the mounting base, the driving component, and the locking component in a smoke collection structure according to another embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the structure of a range hood provided in an embodiment of this application.

[0026] Figure labels and corresponding explanations:

[0027] 1: Smoke hood;

[0028] 2: Smoke gathering plate;

[0029] 3: Drive assembly; 31: Drive motor; 32: Transmission component; 321: Roller; 322: First transmission component; 3221: Abutting arm; 3222: Transmission arm; 3223: Abutting protrusion; 323: Second transmission component;

[0030] 4: Positioning assembly; 41: Positioning motor; 42: Positioning component; 421: First arm; 422: Second arm;

[0031] 5: Mounting base; 51: Limiting part; 52: Limiting arm; 53: Mounting shell;

[0032] 6: Oil fume concentration monitoring device;

[0033] 7: Smoke exhaust fan. Detailed Implementation

[0034] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated 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” as used herein includes all or any units and all combinations thereof of one or more associatedly listed items.

[0036] like Figure 1-6 As shown, this application provides a smoke collection structure for use in range hoods. The smoke collection structure mainly includes a smoke collection hood 1, a smoke collection plate 2, and a drive assembly 3. The smoke collection hood 1 has multiple locking structures inside; the smoke collection plate 2 is located on one side of the smoke collection hood 1 and can rotate relative to the smoke collection hood 1; the drive assembly 3 includes a drive motor 31 and a transmission component 32 connected to each other; the transmission component 32 is located inside the smoke collection hood 1 and connected to the smoke collection plate 2; the drive motor 31 drives the transmission component 32 to move and rotate the smoke collection plate 2; when the transmission component 32 moves to abut against any of the locking structures, the drive motor 31 self-locks.

[0037] In this embodiment, the smoke collection hood 1 has an internal cavity, and a smoke inlet communicating with the cavity is provided at the lower part of the smoke collection hood 1. The smoke collection hood 1 is equipped with a function button, which is located above the smoke inlet. The function button can also be installed on the smoke gathering plate 2. The smoke gathering plate 2 is located outside the smoke inlet. The driving assembly 3 is used to drive the smoke gathering plate 2 to rotate outwards or inwards relative to the smoke collection hood 1, thereby opening or closing accordingly. By adjusting the opening position of the smoke gathering plate 2, i.e., the rotation angle of the smoke gathering plate 2 relative to the smoke inlet, the amount of smoke entering the smoke inlet is adjusted. The smoke gathering plate 2 can be preset with corresponding opening positions (e.g., normal setting and high-heat setting) according to the working level of the gas stove (e.g., normal setting open position and high-heat setting open position), i.e., it has corresponding opening degrees. The opening degree of the smoke gathering plate 2 in the high-heat setting open position is greater than the opening degree in the normal setting open position. When the drive component 3 drives the smoke collection plate 2 to rotate, and the transmission component 32 abuts against the corresponding locking structure, the smoke collection plate 2 is in the normal mode open position or the stir-fry mode open position.

[0038] In the smoke-collecting structure provided in this embodiment, during the stage where the drive motor 31 drives the transmission component 32 to move and rotate the smoke-collecting plate 2, after the transmission component 32 moves to abut against any locking structure, the drive motor 31 changes from a driving state to a stopped state under the action of the locking structure. The play gap of the drive motor 31, as well as the play gap between the locking structure and the transmission component 32, gradually decreases until the play gap disappears, and the drive motor 31 stops and remains in a self-locking state. At this time, the self-locking drive motor 31, as well as the abutting locking structure and the transmission component 32, 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 good tactile and visual experience during operation.

[0039] like Figure 1-6 As shown, as an optional implementation, the smoke collection structure further includes a positioning component 4, which is disposed on one side of the drive component 3. The positioning component 4 includes a positioning motor 41 and a positioning member 42 connected to each other; the positioning member 42 has a positioning arm, which serves as a positioning structure; the positioning motor 41 drives the positioning member 42 to move, so as to adjust the relative position of the positioning arm and the transmission member 32.

[0040] Based on the aforementioned embodiments, in this embodiment, the positioning motor 41 provides power for the movement of the positioning member 42. The positioning motor 41 drives the positioning member 42 to move, and the positioning arm moves synchronously. The positioning arm moves to a preset positioning position, that is, the position where it abuts against the transmission member 32. Adjusting the relative position of the positioning arm and the transmission member 32 is also used to avoid contact between the positioning arm and the transmission member 32, so as to achieve avoidance.

[0041] like Figure 1-6As shown, in one optional implementation, the transmission member 32 includes an abutment arm 3221 for abutting against the locking arm; the smoke gathering plate 2 moves between the closed position, the normal setting open position, and the stir-fry setting open position; the opening angle of the smoke gathering plate 2 in the stir-fry setting open position is greater than the opening angle in the normal setting open position; when the abutment arm 3221 abuts against the locking arm, the smoke gathering plate 2 is located in the normal setting open position.

[0042] Based on the aforementioned embodiments, in this embodiment, when the locking arm abuts against the abutting arm 3221, the smoke-collecting plate 2 remains in the normal open position. When the smoke-collecting plate 2 is in the closed position or the stir-fry open position, the abutting arm 3221 is not connected to the locking arm. During the rotation of the smoke-collecting plate 2 towards the stir-fry open position or towards the closed position, the locking member 42 avoids the transmission member 32.

[0043] The smoke-collecting plate 2 can be in the closed position, the normal mode open position, or the high-heat mode open position, with the transmission component 32 and the locking component 42 in their respective positions. Specifically, when the transmission component 32 is in the preset initial position and the locking component 42 is in the preset small-angle engagement position, the smoke-collecting plate 2 is in the closed position, and the transmission component 32 and the locking component 42 are not in contact; when the transmission component 32 is in the preset normal mode engagement position and the locking component 42 is in the small-angle engagement position or the preset large-angle engagement position, the smoke-collecting plate 2 is in the normal mode open position, and the transmission component 32 and the locking component 42 are in contact; when the transmission component 32 is in the preset high-heat mode engagement position and the locking component 42 is in the large-angle engagement position, the smoke-collecting plate 2 is in the high-heat mode open position, and the transmission component 32 and the locking component 42 are not in contact.

[0044] It should be noted that the "small angle" in the "small angle engagement position" and the "large angle" in the "large angle engagement position" of the locking component 42 refer to the opening and closing angle of the smoke-collecting plate 2. Specifically, the "small angle" refers to the switching between the smoke-collecting plate 2 in the normal open position and the closed position; the "large angle" refers to the switching between the smoke-collecting plate 2 in the normal open position and the stir-fry open position. When the smoke-collecting plate 2 is in the normal open position, the locking component 42 can be in either the "small angle engagement position" or the "large angle engagement position," depending on the position movement of the transmission component 32. The locking component 42 has two functions: one is to abut against the transmission component 32, and the other is to avoid the transmission component 32. More specifically, when the locking component 42 is in the "small angle engagement position," it is used to abut against or avoid the transmission component 32. Similarly, when the locking component 42 is in the "large angle engagement position," it is used to abut against or avoid the transmission component 32. See the following embodiments for details.

[0045] like Figure 1-6 As shown, as an optional implementation, the transmission member 32 further includes a roller 321, which is disposed at the end of the abutment arm 3221 for abutting against the locking arm.

[0046] Based on the aforementioned embodiments, in this embodiment, the roller 321 is disposed on the side of the end of the locking arm. During the contact phase with the locking arm, as the clearance gradually decreases, the roller 321 gradually rolls to form a "soft" contact with the locking arm, avoiding damage to components caused by "hard" contact.

[0047] like Figure 1-6 As shown, as an optional implementation, the smoke collection structure also includes a mounting base 5, which is disposed inside the smoke collection hood 1. The mounting base 5 has a limiting part 51 for abutting against the transmission member 32, and the limiting part 51 also serves as a locking structure. The drive assembly 3 and the locking assembly 4 are both mounted on the mounting base 5. When the limiting part 51 abuts against the locking member 42, the smoke collection plate 2 is in the open position of the stir-fry setting.

[0048] Based on the aforementioned embodiments, in this embodiment, the mounting base 5 is fixed to the smoke hood 1, for example, the mounting base 5 is fixed to the top of the smoke hood 1 by bolts. The mounting base 5 includes a mounting shell 53, which has an opening on one side. Both the drive motor 31 and the locking motor 41 can be reversible motors, meaning that forward or reverse rotation can be achieved by controlling the current. Both the drive motor 31 and the locking motor 41 are located inside the mounting shell 53, while the transmission component 32 and the locking component 42 are located outside the mounting shell 53. The output shafts of the drive motor 31 and the locking motor 41 pass through the shell wall of the mounting shell 53 to drive and connect with the transmission component 32 and the locking component 42, respectively. The limiting part 51 can be a protrusion on the mounting shell 53, which protrudes from the outside of the mounting shell 53. The limiting part 51 can also limit a notch on the protrusion. Both the limiting part 51 and the drive assembly 3 are positioned higher than the locking assembly 4. When the transmission component 32 is in the high-heat stir-fry contact position, the transmission component 32 abuts against the limiting part 51. The shape and position of the limiting part 51 can be set according to the actual situation.

[0049] like Figure 1-6 As shown, in one optional implementation, the locking arm includes a first arm 421 and a second arm 422 spaced apart; the locking motor 41 drives the locking member 42 to rotate so that the first arm 421 and the second arm 422 rotate synchronously.

[0050] Based on the aforementioned embodiments, in this embodiment, the main body of the locking component 42 is plate-shaped, and the locking component 42 is perpendicularly connected to the output shaft of the locking motor 41 so as to realize that the locking motor 41 drives the locking component 42 to rotate.

[0051] In some embodiments, the first arm 421 and the second arm 422 are arranged one in front of the other, with the first arm 421 located at the front and the second arm 422 located at the rear. The locking motor 41 drives the locking member 42 to rotate forward or backward. The locking member 42 is shaped like a shift fork, and the shape and layout of the first arm 421 and the second arm 422 are not specifically limited. Both the first arm 421 and the second arm 422 are used to abut against the transmission member 32. When either the first arm 421 or the second arm 422 abuts against the abutting arm 3221, the smoke gathering plate 2 is in the normal open position.

[0052] like Figure 1-6 As shown, in an optional implementation, 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 drive motor 31 and includes a transmission arm 3222 and an abutment arm 3221 spaced apart. The second transmission member 323 is rotatably connected to the transmission arm 3222 and is also connected to the smoke collecting plate 2.

[0053] Based on the aforementioned embodiments, in this embodiment, the first transmission member 322 is plate-shaped and is perpendicularly connected to the output shaft of the drive motor 31, so that the drive 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.

[0054] The second transmission component 323 is elongated, and can be either a long rod or a long plate. Both ends of the second transmission component 323 are rotatably connected to the transmission arm 3222 and the smoke-collecting plate 2, respectively. In some embodiments, the second transmission component 323 pushes the smoke-collecting plate 2 forward to rotate outward or pulls it backward to rotate inward. The first transmission component 322, the second transmission component 323, and the smoke-collecting plate 2 are connected by a transmission mechanism. It should be noted that the aforementioned position of the transmission component 32 in the conventional contact position mainly emphasizes the location of the contact arm 3221.

[0055] like Figure 1-6 As shown, in some embodiments, the drive motor 31 drives the first transmission member 322 forward, and the first transmission member 322 rotates from the initial position to the normal engagement position, and then rotates to the stir-fry engagement position; conversely, the drive motor 31 drives the first transmission member 322 backward, and the first transmission member 322 rotates from the stir-fry engagement position to the normal engagement position, and then rotates back to the initial position. When the first transmission member 322 is in the initial position, the engagement arm 3221 is higher than the transmission arm 3222. To avoid the engagement arm 3221 located at a higher position, an upwardly recessed accommodating space is formed on the inner side of the top wall of the smoke hood 1. In some embodiments, an upwardly protruding shell portion is formed on the outer side of the top wall of the smoke hood 1, and the accommodating space is located within the shell portion.

[0056] like Figure 1-6 As shown, in an optional embodiment, the transmission member 32 further includes an abutting protrusion 3223 or an abutting recess for engaging with the limiting part 51. The abutting protrusion 3223 or the abutting recess is disposed on the side of the transmission arm 3222 opposite to the abutting arm 3221.

[0057] Based on the foregoing embodiments, in this embodiment, an abutting protrusion 3223 or an abutting recess is formed in 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 has a triangular sheet-like structure. When the abutting protrusion 3223 abuts against the limiting part 51, the limiting part 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 part 51. It should be noted that the aforementioned transmission member 32 being located at the abutting position in the stir-fry setting mainly emphasizes the location of the abutting protrusion 3223 or the abutting recess.

[0058] like Figure 1-6 As shown, as an optional implementation, the mounting base 5 also includes a limiting arm 52, which is disposed on opposite sides of the locking member 42 to limit the rotation angle of the locking member 42.

[0059] Based on the foregoing embodiments, in this embodiment, the mounting base 5 further includes a limiting member, which is fixed to the mounting shell 53. The limiting member includes a plate-shaped body with two relatively distant limiting arms 52, which are angularly connected to the plate-shaped body. A locking member 42 is installed between the two limiting arms 52. The locking member 42 will abut against the limiting arms 52 when rotated clockwise or counterclockwise, thereby limiting the rotation angle of the locking member 42.

[0060] The locking member 42 moves between a small-angle engagement position and a large-angle engagement position. In some embodiments, the two limiting arms 52 are arranged in a front-rear direction. When the lower part of the locking member 42 abuts against the front limiting arm 52, the locking member 42 is in the small-angle engagement position, and the rear side of the first arm 421 abuts against the roller 321 of the abutting arm 3221; when the locking member 42 rotates forward from the small-angle engagement position, and the lower part of the locking member 42 abuts against the rear limiting arm 52, the locking member 42 is in the large-angle engagement position, and the front side of the second arm 422 abuts against the roller 321 of the abutting arm 3221.

[0061] In some embodiments, if the smoke-collecting plate 2 moves directly from the closed position to the open position of the stir-fry setting, when the abutting arm 3221 of the first transmission member 322 rotates between the first arm 421 and the second arm 422, or moves to abut against the first arm 421, the locking member 42 rotates forward and moves from the small angle engagement position to the large angle engagement position to avoid the abutting arm 3221; otherwise, the abutting arm 3221 will always be stuck in the first arm 421. The first transmission member 322 continues to rotate forward until it abuts against the abutting part, causing the smoke-collecting plate 2 to move to the open position of the stir-fry setting. Conversely, if the smoke-collecting plate 2 moves directly from the open position to the closed position, when the abutting arm 3221 of the first transmission member 322 rotates between the first arm 421 and the second arm 422, or moves to abut against the second arm 422, the locking member 42 rotates backward, moving from a large-angle engagement position to a small-angle engagement position to avoid the abutting arm 3221. Otherwise, the abutting arm 3221 will remain locked against the second arm 422. The first transmission member 322 continues to rotate backward until the smoke-collecting plate 2 moves to the closed position.

[0062] 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, causing the smoke-collecting plate 2 to remain 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, causing the smoke-collecting plate 2 to remain in the normal open position.

[0063] When the range hood is working, the smoke collection plate 2 opens to a fixed position, which generally provides a good smoke extraction effect. However, for scenarios with heavy cooking fumes, it is usually necessary to increase the speed of the exhaust fan 7 as an auxiliary measure to prevent the fumes from escaping. However, the higher the speed of the exhaust fan 7, the greater the air volume, and consequently the greater the noise, which can easily lead to a poor user experience.

[0064] like Figure 1-7 As shown, based on the same inventive concept, this application provides a range hood, which includes a smoke collection structure as described in any of the foregoing embodiments, a smoke concentration monitoring device 6, a smoke exhaust fan 7, and a controller. The smoke concentration monitoring device 6 is installed on the smoke collection hood 1 of the smoke collection structure; the controller is connected to and controls the smoke exhaust fan 7, the smoke concentration monitoring device 6, the drive component 3 of the smoke collection structure, and the positioning component 4.

[0065] 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 collection hood 1; optionally, the smoke concentration detection device is an optical oil fume concentration detector. The exhaust fan 7 is installed above the smoke collection hood 1, and the exhaust fan 7 has high-speed and low-speed operation modes. The controller can automatically adjust the opening position of the smoke collection plate 2 and the operation mode of the exhaust fan 7 according to the current oil fume concentration, ensuring smoke extraction capacity while generating less noise, improving the user experience. For details, please refer to the following embodiments.

[0066] In the range hood provided in this embodiment, during the stage where the drive motor 31 drives the transmission component 32 to move and rotate the smoke collection plate 2, after the transmission component 32 moves to abut against any locking structure, the drive motor 31 changes from a driving state to a stopped state under the action of the locking structure. The play gap of the drive motor 31, as well as the play gap between the locking structure and the transmission component 32, gradually decreases until the play gap disappears, and the drive motor 31 stops and remains in a self-locking state. At this time, the self-locking drive motor 31, as well as the abutting locking structure and transmission component 32, provide sufficient support for the smoke collection plate 2. When the user presses the function button, the smoke collection plate 2 remains stable, ensuring that the user has a good tactile and visual experience during operation.

[0067] The above-mentioned control method for range hoods mainly includes steps S1-S4:

[0068] Step S1: Obtain the current oil fume concentration;

[0069] Step S2: Obtain the current first position information of driver component 3;

[0070] Step S3: Obtain the current second position information of the card slot structure;

[0071] Step S4: Based on the current oil fume concentration, current first position information, current second position information, and preset instruction output rules, output the current drive instruction for drive component 3, the current positioning instruction for the positioning structure, and the current gear instruction for exhaust fan 7.

[0072] Based on the aforementioned embodiments, in this embodiment, the current oil fume concentration in step S1 is obtained in real time by the oil fume concentration monitoring device 6 after the smoke collection plate 2 is opened, and the user can open the smoke collection plate 2 through the function button.

[0073] The first position information in step S2 can be determined based on the power-on record information of the drive motor 31; optionally, the first position information includes at least the preset normal mode contact position and the preset stir-fry mode contact position.

[0074] The second position information in step S3 is the position information of the positioning component 2, which can be determined based on the power-on record information of the positioning motor 41; optionally, the second position information includes at least the position located at a preset small angle engagement position and the position located at a preset large angle engagement position.

[0075] The drive command in step S4 is used to control the drive motor 31 to drive the transmission component 32 to move or remain stationary; optionally, the drive command includes at least moving to the normal gear contact position, moving to the stir-fry gear contact position, being in the normal gear contact position, and being in the stir-fry gear contact position.

[0076] The positioning command in step S4 is used by the positioning motor 41 to drive the positioning component 42 to move or remain in a different position. Optionally, the positioning command includes at least the following: moving to a small-angle engagement position, moving to a large-angle engagement position, moving to a small-angle engagement position, and moving to a large-angle engagement position.

[0077] In step S4, the gear command is used to adjust the working mode of the exhaust fan 7; optionally, the gear command includes high gear operation and low gear operation.

[0078] The opening angle of the smoke collection plate 2 is dynamically adjusted in real time according to the current concentration of oil fumes, which can bring good smoke removal effect in various scenarios and suppress noise to the maximum extent, providing users with a better auditory experience.

[0079] As an optional implementation, in step S4 above, based on the current oil fume concentration, the current first position information, the current second position information, and the preset instruction output rules, the current drive instruction for the drive component 3, the current positioning instruction for the positioning structure, and the current gear instruction for the exhaust fan 7 are output, including:

[0080] Compare 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.

[0081] Based on the comparison results and the corresponding relationships between the preset comparison results, first position information, second position information, drive command, locking command, and gear command, the current drive command, current locking command, and current gear command corresponding to the current comparison results, current first position information, and current second position information are output.

[0082] Based on the aforementioned embodiments, in this embodiment, the second oil fume concentration is greater than the first oil fume concentration. The preset comparison results include three types: 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.

[0083] As shown in Table 1 below, there are at least nine possible correspondences among the six preset comparison results, first position information, second position information, drive command, locking command, and gear command.

[0084] Table 1 shows the correspondence between the preset comparison results, first position information, second position information, drive command, locking command, and gear command.

[0085]

[0086]

[0087] The following section provides a detailed explanation of the nine correspondences.

[0088] 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 that it is located at the stir-fry setting contact position, and the second position information is that it is located at the large angle engagement position, then the output current drive command is to move to the normal setting contact position, the current locking command is to be located at the large angle engagement position, and the current gear information is to be running at the low gear.

[0089] Based on the aforementioned embodiments, the user can turn on the range hood via function buttons. After the range hood is turned on, the smoke collection plate 2 will open. The smoke concentration monitoring device 6 will then acquire the current smoke concentration in real time after the smoke collection plate 2 opens. That is, the smoke collection plate 2 will definitely move to a preset position after opening, which is either the normal setting position or the high-heat setting position. This embodiment describes the control logic for the smoke collection plate 2 to rotate from the high-heat setting position to the normal setting position after it is initially in the high-heat setting position.

[0090] 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 in the normal gear contact position, and the second position information is in the small angle engagement position, then the output current drive command is in the normal gear contact position, the current locking command is in the small angle engagement position, and the current gear information is in the low gear operation.

[0091] Based on the aforementioned embodiments, this embodiment is a control logic whereby the smoke collection plate 2 moves from the closed position to the normal open position and remains in the same position, while the smoke exhaust fan 7 operates in a low-speed mode.

[0092] 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 in the normal gear contact position, and the second position information is in the large angle engagement position, then the output current drive command is in the normal gear contact position, the current locking command is in the large angle engagement position, and the current gear information is in the low gear operation.

[0093] Based on the aforementioned embodiments, this embodiment is a control logic in which the smoke collection plate 2 moves from the high-heat setting to the normal setting and remains in the same position, while the exhaust fan 7 operates in a low-speed mode.

[0094] The three embodiments described above demonstrate that, under conditions of low oil fume concentration, the smoke collection plate 2 is in the normal open position and the exhaust fan 7 is running at a low speed (low air volume), resulting in a better smoke extraction effect.

[0095] 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 that it is located in the stir-fry setting contact position, and the second position information is that it is located in the large angle engagement position, then the output current drive command is to move to the normal setting contact position, the current locking command is to be located in the large angle engagement position, and the current gear information is to be running in the high gear.

[0096] Based on the aforementioned embodiments, this embodiment is a control logic whereby the smoke collection plate 2 is in the high-heat cooking mode open position, and then rotates from the high-heat cooking mode open position to the normal mode open position, with the exhaust fan 7 operating in a high-temperature mode.

[0097] 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 in the normal gear contact position, and the second position information is in the small angle engagement position, then the output current drive command is in the normal gear contact position, the current locking command is in the small angle engagement position, and the current gear information is in the high gear operation.

[0098] Based on the aforementioned embodiments, this embodiment uses the control logic of keeping the smoke collection plate 2 in the normal open position and the smoke exhaust fan 7 in the high-level operation mode.

[0099] 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 in the normal gear contact position, and the second position information is in the large angle engagement position, then the output current drive command is in the normal gear contact position, the current locking command is in the large angle engagement position, and the current gear information is in the high gear operation.

[0100] Based on the aforementioned embodiments, this embodiment uses the control logic of keeping the smoke collection plate 2 in the normal open position and the smoke exhaust fan 7 in the high-level operation mode.

[0101] The three embodiments described above demonstrate how, when the concentration of cooking fumes rises to a high level, the smoke collection plate 2 is in the normal open position and the exhaust fan 7 is running at a high level (high air volume), resulting in a better smoke extraction effect.

[0102] 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 in the normal gear contact position, and the second position information is in the small angle engagement position, then the output current drive command is to move to the stir-fry gear contact position, the current locking command is to move to the large angle engagement position, and the current gear information is to be in the high gear operation.

[0103] Based on the aforementioned embodiments, in this embodiment, the control logic is that after the smoke collection plate 2 is in the normal open position, it rotates from the stir-fry open position to the stir-fry open position, and the smoke exhaust fan 7 is in the high-level operation mode.

[0104] 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 in the normal gear contact position, and the second position information is in the large angle engagement position, then the output current drive command is to move to the stir-fry gear contact position, the current locking command is to be in the large angle engagement position, and the current gear information is to be in the high gear.

[0105] Based on the aforementioned embodiments, this embodiment is a control logic whereby the smoke collection plate 2 is in the normal open position, rotates from the stir-fry open position to the stir-fry open position, and the smoke exhaust fan 7 is in the high-level operation mode.

[0106] 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 that it is located at the high-heat stir-fry position, and the second position information is that it is located at the large-angle engagement position, then the output current drive command is that it is located at the high-heat stir-fry position, the current locking command is that it is located at the large-angle engagement position, and the current gear information is that it is running at the high gear.

[0107] Based on the aforementioned embodiments, this embodiment uses the control logic that keeps the smoke collection plate 2 in the open position of the stir-fry setting and the smoke exhaust fan 7 in the high-level operation mode.

[0108] In the three embodiments described above, when the concentration of cooking fumes increases to a higher level, the smoke-collecting plate 2 is positioned in the open position of the stir-fry setting. Compared to the open position of the regular setting, the smoke-collecting area is expanded, allowing even the rising fumes from the outer edges to be guided to the smoke inlet by the smoke-collecting plate 2, thus improving smoke extraction efficiency. The exhaust fan 7 can operate at a high setting without further increasing the airflow, and the noise level will not increase further, thereby providing users with a better auditory experience.

[0109] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0110] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0111] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0112] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0113] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0114] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A smoke-collecting structure, applied to a range hood, characterized in that, include: The smoke hood (1) has multiple locking structures inside; A smoke collection plate (2) is disposed on one side of the smoke collection hood (1) and can rotate relative to the smoke collection hood (1); The drive assembly (3) includes a drive motor (31) and a transmission component (32) connected to each other; the transmission component (32) is disposed inside the smoke collection hood (1) and connected to the smoke gathering plate (2); the drive motor (31) drives the transmission component (32) to move so as to drive the smoke gathering plate (2) to rotate; when the transmission component (32) moves to abut against any of the locking structures, the drive motor (31) self-locks.

2. The smoke-collecting structure according to claim 1, characterized in that, The smoke collection structure also includes: A positioning component (4) is disposed on one side of the drive component (3). The positioning component (4) includes a positioning motor (41) and a positioning member (42) connected to each other. The positioning member (42) has a positioning arm, which serves as the positioning structure. The positioning motor (41) drives the positioning member (42) to move, so as to adjust the relative position of the positioning arm and the transmission member (32).

3. The smoke-collecting structure according to claim 2, characterized in that, The transmission component (32) includes an abutment arm (3221) for abutting against the locking arm; The smoke-collecting plate (2) moves between the closed position, the normal setting open position, and the high-heat setting open position; the opening and closing angle of the smoke-collecting plate (2) in the high-heat setting open position is greater than the opening and closing angle in the normal setting open position. When the abutting arm (3221) abuts against the locking arm, the smoke gathering plate (2) is located in the normal open position.

4. The smoke-collecting structure according to claim 3, characterized in that, The transmission component (32) also includes: A roller (321) is disposed at the end of the abutment arm (3221) for abutting against the locking arm.

5. The smoke-collecting structure according to claim 3, characterized in that, Also includes: Mounting base (5) is disposed inside the smoke hood (1). The mounting base (5) has a limiting part (51) for abutting against the transmission member (32). The limiting part (51) also serves as the locking structure. Both the drive assembly (3) and the locking assembly (4) are mounted on the mounting base (5); when the limiting part (51) abuts against the locking member (42), the smoke-collecting plate (2) is located in the open position of the stir-fry setting.

6. The smoke-collecting structure according to claim 5, characterized in that, The locking arm includes a first arm (421) and a second arm (422) spaced apart; The positioning motor (41) drives the positioning component (42) to rotate so as to drive the first arm (421) and the second arm (422) to rotate synchronously.

7. The smoke-collecting structure according to claim 6, characterized in that, The transmission component (32) also includes: The first transmission component (322) is connected to the drive motor (31). The first transmission component (322) includes a transmission arm (3222) and a contact arm (3221) arranged at intervals. The second transmission component (323) is rotatably connected to the transmission arm (3222), and the second transmission component (323) is also connected to the smoke collection plate (2).

8. The smoke-collecting structure according to claim 7, characterized in that, The transmission member (32) further includes an abutting protrusion (3223) or an abutting recess for engaging with the limiting part (51), wherein the abutting protrusion (3223) or the abutting recess is disposed on the side of the transmission arm (3222) opposite to the abutting arm (3221).

9. The smoke-collecting structure according to claim 6, characterized in that, The mounting base (5) also includes: Limiting arms (52) are provided on 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 collection structure as described in any one of claims 1-9; A fume concentration monitoring device (6) is installed on the fume collection hood (1) of the fume collection structure; Smoke exhaust fan (7); The controller connects to and controls the exhaust fan (7), the oil fume concentration monitoring device (6), the drive component (3) of the smoke collection structure, and the positioning component (4).

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