A control method for a range hood

Abstract

This invention discloses a control method for a range hood, applied to a range hood. A pre-reserved groove is provided within the base, and an opening is formed in the groove on the base surface. The range hood includes a smoke collection device and a fan device housed within the pre-reserved groove, and a flexible hose connecting the smoke collection device and the fan device. The control method includes the following steps: when cooking begins, the drive assembly drives the housing to slide forward, switching from a stopped state concealed within the base to a working state exposed outside the base; the smoke concentration at the two smoke inlets is detected, and based on the detection results, the drive assembly is controlled to adjust the smoke baffle to the corresponding setting. The beneficial effect of this invention is that it can adapt to different cooking methods by adjusting the setting of the smoke baffle, enhancing the adaptability of the range hood and improving user satisfaction.

Description

Technical Field

[0001] This invention relates to a control method for a range hood, belonging to the technical field of kitchen appliances. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They are typically categorized into top-mounted and side-mounted types. Side-mounted range hoods can immediately capture and remove cooking fumes, effectively reducing their spread throughout the kitchen.

[0003] Typically, kitchen stovetops have multiple cooktops. To save space, users usually place a side-draft range hood between two cooktops. Generally, side-draft range hoods have separate smoke inlets for each cooktop, ensuring effective smoke extraction for all cooktops. The smoke inlets of these range hoods are equipped with baffles; these baffles flip outwards to collect the cooking fumes. However, most range hoods can only open both baffles simultaneously. When only one cooktop is used, having both baffles open at the same time can cause noise and energy waste. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a control method for a range hood, which can adapt to different cooking methods by adjusting the setting of the smoke guide plate, thereby enhancing the adaptability of the range hood and improving user satisfaction.

[0005] The present invention is achieved through the following technical solution.

[0006] A control method for a range hood, applied to a range hood; a reserved groove is provided in the base, and the reserved groove has an opening on the base surface; the range hood includes a smoke collection device and a fan device disposed in the reserved groove, and a flexible hose connecting the smoke collection device and the fan device;

[0007] The smoke collection device includes a housing that can move back and forth and has a smoke collection chamber inside, and a drive unit; at least one side of the housing is provided with a smoke inlet, and multiple smoke guide plates are provided at the smoke inlet. The smoke guide plates are slidable and gradually flip outward when sliding. The smoke baffles are set with multiple positions, and each position is matched with a corresponding sliding distance and flipping angle; the drive unit is used to drive the housing to move back and forth and the smoke guide plates to slide.

[0008] The control method includes the following steps:

[0009] When cooking begins, the drive assembly drives the housing forward and switches from a stopped state hidden within the base to a working state exposed outside the base; it detects the smoke concentration at the two smoke inlets and controls the drive assembly to adjust the smoke baffle to the corresponding setting based on the detection results.

[0010] As a further improvement of the present invention, when the smoke baffle is in the lowest position, the smoke baffle is in the lowest position and its flip angle is 0; when the smoke baffle is in the highest position, the smoke baffle is in the highest position and its flip angle is 90°, and multiple smoke baffles are stacked on top of each other.

[0011] As a further improvement of the present invention, the smoke baffle has four positions, and the flip angle of the smoke baffle from low to high is 0°, 30°, 60° and 90° respectively.

[0012] As a further improvement of the present invention, if the smoke baffle is adjusted to the highest level and maintained for a period of time, and the oil fume concentration detected at the smoke inlet does not decrease to the oil fume concentration corresponding to the highest level, then the smoke extraction power of the fan device is increased.

[0013] As a further improvement of the present invention, the smoke extraction power of the fan device is set to multiple levels, each level being matched with a different range of oil fume concentration.

[0014] As a further improvement of the present invention, the driving assembly includes a driving mechanism and a transmission mechanism; the transmission mechanism includes a first moving gear, a second moving gear, and a first output wheel that can move in the left-right direction, and also includes a second output wheel with a fixed position and a driver; the first output wheel and the second output wheel are respectively used to drive the vertical sliding of the smoke guide plates on both sides; the driving mechanism is used to synchronously drive the first moving gear and the second moving gear to rotate and move in the same direction, so that the first moving gear and the first output wheel are engaged, or the second moving gear and the second output wheel are engaged; the driver is used to drive the second output wheel to move and engage with the second output wheel and to drive the second output wheel to reset.

[0015] As a further improvement of the present invention, the drive assembly includes a drive motor configured as a dual-head motor, two rotating shafts mounted on the drive motor, and a first fixed gear and a second fixed gear respectively connected to the two rotating shafts; the drive motor is configured as a dual-head motor and is mounted on the housing; the first fixed gear and the first moving gear mesh and both are helical gears, and the second fixed gear and the second moving gear mesh and both are helical gears.

[0016] As a further improvement of the present invention, the driving mechanism further includes a driving gear driven by the rotating shaft and a rack meshing with the driving gear; the rack is fixed in position and extends in the front-rear direction.

[0017] As a further improvement of the present invention, the driving mechanism further includes a bidirectional damper sleeved on the rotating shaft, and the driving gear is connected to the bidirectional damper; the bidirectional damper is set with a threshold torque, and the bidirectional damper rotates when the output torque of the driving motor is greater than the threshold torque, and the bidirectional damper does not rotate when the output torque of the driving motor is less than the threshold torque.

[0018] The beneficial effects of this invention are:

[0019] 1. Users can adjust the setting of the smoke guide plate to adapt to different cooking methods, thereby enhancing the adaptability of the range hood and improving user satisfaction.

[0020] 2. The exhaust power of the fan unit is set to multiple levels, each level matching a different range of oil fume concentration. This means that users can select the appropriate exhaust power level of the fan unit according to the concentration of oil fumes generated during cooking. On the one hand, this can avoid the fan unit from overloading when the oil fume concentration is high or running inefficiently when the oil fume concentration is low, thereby effectively reducing energy consumption. On the other hand, the multi-level exhaust power design of the fan unit allows the range hood to adapt to the changes in oil fume concentration generated by different cooking methods, ensuring that the oil fumes are always effectively treated. Attached Figure Description

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0022] Figure 1 This is a structural diagram of a range hood;

[0023] Figure 2 This is a top view of the structural assembly between the housing and the base when the machine is in a stopped state.

[0024] Figure 3 This diagram shows the structural relationship between the shell and the substrate when the shell is in the working state.

[0025] Figure 4 This is a schematic diagram of the matrix structure;

[0026] Figure 5 This is a schematic diagram of the drive assembly.

[0027] Figure 6 This is a schematic diagram of the drive motor.

[0028] Figure 7 This is a diagram showing the structural relationship between the smoke guide plate and the shell.

[0029] Figure 8 This is a diagram showing the connection structure between the second layer of smoke guide plate and the first linkage rope from top to bottom;

[0030] Figure 9 This is a diagram showing the connection structure between the smoke guide plate of the third layer from top to bottom and the second linkage rope;

[0031] Figure 10 This is a schematic diagram of the connection structure between the oil mesh and the oil box;

[0032] Figure 11 for Figure 10 A schematic diagram of the structure of part A;

[0033] Figure 12 for Figure 10 A structural diagram of section B;

[0034] Figure 13 This is a schematic diagram of the second axis. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0036] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0037] Example 1,

[0038] A range hood, used in a kitchen environment, includes a smoke collection device, a fan device h, and a flexible duct m. The fan device h is installed in a pre-reserved groove g1. One end of the flexible duct m is connected to the air inlet of the fan device h, and the other end is connected to the smoke exhaust port at the rear of the housing 1. (Refer to...) Figures 1-13 The base g has a reserved groove g1, and the reserved groove g1 forms an opening g2 on the base surface. In this embodiment, the base g is set as a wall, and the base surface is the wall surface. Of course, the base g can also be set as other structures, such as housings, equipment, and other carriers. The smoke collection device includes a shell 1 with a smoke collection chamber inside and a drive component 2. The shell 1 is slidably set in the reserved groove g1. Smoke inlets 11 are provided on two sides of the shell 1 to draw the oil fumes on both sides of the shell 1 into the smoke collection chamber. The drive component 2 is used to drive the shell 1 to translate, so that the shell 1 has a stopped state hidden inside the base g and a working state exposed outside the base g.

[0039] When the housing 1 is in the off state, it is hidden inside the base g. At this time, the housing 1 does not occupy the space outside the base g, which makes the kitchen space appear more spacious and tidy. On the other hand, it avoids the housing 1 being exposed for a long time and being contaminated by oil fumes, dust and other substances in the kitchen, thus maintaining the cleanliness of the surface of the housing 1. At the same time, it reduces the risk of bumping or knocking to the user due to the housing 1 protruding from the base g, thus reducing safety hazards. When the housing 1 is in the working state, it is exposed outside the base g. At this time, the smoke inlets 11 on both sides of the housing 1 can draw the oil fumes on both sides of the housing 1 into the smoke collection chamber, keeping the kitchen environment clean.

[0040] In this embodiment, the drive unit 2 is used to drive the housing 1 to translate on the reserved slot g1, so that the user can switch the housing 1 between the stopped state hidden in the base g and the working state exposed outside the base g according to the usage needs. This satisfies the needs of saving space and cleaning, and also ensures the smoke extraction effect of the housing 1 during cooking.

[0041] In this embodiment, the front part of the housing 1 has a front plate 12. When the housing 1 is in the stopped state, the front plate 12 is flush with the base surface, that is, the front plate 12 and the base surface are on the same plane. At this time, the housing 1 and the base g form an integral whole, which has a better overall visual effect and helps to improve the product value. In addition, the edge of the front plate 12 is close to the edge corresponding to the opening g2, which can prevent dust, fumes or other pollutants in the kitchen from entering the reserved slot g1 from the opening g2 and contaminating the housing 1. When the housing 1 is started, the housing 1 gradually moves outward from the stopped state, that is, the state in which the front plate 12 is flush with the base surface, until it moves out of the base g for the maximum stroke. At this time, the smoke inlet 11 is completely exposed outside the base g.

[0042] In this embodiment, the lower wall of the reserved groove g1 is provided with two slide rails, which extend along the translational direction of the housing 1. The housing 1 is provided with two sliding members corresponding to each slide rail, which are located at the bottom of the housing 1 and are slidably connected to the slide rail. Here, the sliding member is designed to extend horizontally and protrude downwards, while the slide rail is designed to be a long strip-shaped locking structure that is recessed from top to bottom. That is, the slide rail has a groove extending along the translational direction of the housing 1, and the sliding member is slidably fitted into the groove. The cooperation structure between the slide rail and the sliding member can provide stable support for the housing 1 when it is in the working state, and also ensure the accuracy of the sliding direction of the housing 1.

[0043] In this embodiment, in order to improve the smoke extraction effect of the smoke inlet 11, a smoke guide plate 3 is provided at the smoke inlet 11. The smoke guide plate 3 is used to gather the oil fumes. The smoke guide plate 3 can slide vertically relative to the housing 1. When the smoke guide plate 3 slides upward, it gradually flips outward. After the smoke guide plate 3 flips outward, a smoke inlet channel can be formed between it and the smoke inlet 11 to reduce the escape and diffusion of oil fumes. Here, the vertical sliding of the smoke guide plate is driven by the drive unit 2.

[0044] Specifically, the drive assembly 2 includes a drive mechanism 21 and a transmission mechanism 22. The transmission mechanism 22 includes a first moving gear 221, a second moving gear 222, and a first output wheel 223 that can move in the left and right directions. It also includes a second output wheel 224 that is fixed in position and a driver 225. The first output wheel 223 and the second output wheel 224 are used to drive the vertical sliding of the smoke guide plates on both sides. The drive mechanism 21 is used to synchronously drive the first moving gear 221 and the second moving gear 222 to rotate and move in the same direction, so that the first moving gear 221 and the first output wheel 223 are engaged, or the second moving gear 222 and the second output wheel 224 are engaged. The driver 225 is used to drive the first output wheel 223 to move and engage with the first moving gear 221.

[0045] When the first moving gear 221 and the first output wheel 223 are engaged, the first output wheel 223 can drive the vertical sliding of one side of the smoke guide plate. When the second moving gear 222 and the second output wheel 224 are engaged, the second output wheel 224 can drive the vertical sliding of the other side of the smoke guide plate. Furthermore, since the driver 225 can drive the first output wheel 223 to move and engage with the first moving gear 221, the second moving gear 222 can also engage with the second output wheel 224 when the first moving gear 221 and the first output wheel 223 are engaged. Based on this, the drive assembly 2 can control the vertical sliding of one side of the smoke guide plate separately, or control the vertical sliding of both sides of the smoke guide plate simultaneously. That is, the user can selectively use the drive mechanism 21 to control the smoke guide plate on one side or open the smoke guide plates on both sides of the housing 1 according to actual needs. For example, when only one side of the stove is cooking, only the smoke guide plate on that side can be moved, and the smoke guide plate on the other side can be closed, thereby avoiding unnecessary noise and energy consumption.

[0046] In this embodiment, the drive mechanism 21 includes a drive motor 211 configured as a dual-head motor, two rotating shafts 212 mounted on the drive motor 211, and a first fixed gear 213 and a second fixed gear 214 respectively connected to the two rotating shafts 212. The two rotating shafts 212 are respectively installed at both ends of the dual-head motor. When the dual-head motor is working, it drives the two rotating shafts 212 to rotate synchronously, thereby driving the first fixed gear 213 and the second fixed gear 214 respectively installed on the two rotating shafts 212 to rotate. Here, the first fixed gear 213 meshes with the first moving gear 221 and both are helical gears, and the second fixed gear 214 meshes with the second moving gear 222 and both are helical gears. The helical gears, specifically the first fixed gear 213 and the second fixed gear 214, have the same structure, as do the first moving gear 221 and the second moving gear 222. Since the first fixed gear 213 and the first moving gear 221 mesh and are both helical gears, the first fixed gear 213 generates a lateral thrust on the first moving gear 221 when it rotates, causing the first moving gear 221 to translate. Therefore, when the dual-head motor is working, the rotating first fixed gear 213 and the second fixed gear 214 can push the first moving gear 221 and the second moving gear 222 to move in the same direction. The direction of movement of the first moving gear 221 and the second moving gear 222 can be controlled by the rotation direction of the dual-head motor.

[0047] In this embodiment, the surfaces of the first output wheel 223 and the first moving gear 221 facing each other are respectively provided with a slot 230 and a tooth 229. The engagement of the slot 230 and the tooth 229 allows the first output wheel 223 and the first moving gear 221 to be engaged. This engagement structure ensures that the first moving gear 221 can be tightly connected to the first output wheel 223, guaranteeing transmission accuracy. Furthermore, the first moving gear 221 can be installed on the first output wheel 223 by translating it, without the need for complex adjustments and calibrations. Correspondingly, the surfaces of the second output wheel 224 and the second moving gear 222 facing each other are respectively provided with a slot 230 and a tooth 229. The engagement of the slot 230 and the tooth 229 allows the second output wheel 224 and the second moving gear 222 to be engaged. In addition, the slots 230 and the teeth 229 are arranged circumferentially at intervals, resulting in a more balanced force distribution during engagement and thus better connection reliability.

[0048] In this embodiment, the drive mechanism 21 further includes two drive gears 215 respectively connected to two rotating shafts 212 and two racks g4 meshing with the two drive gears 215. The two racks g4 are spaced apart from each other and mesh with the corresponding drive gears 215 respectively. The racks g4 are disposed on the groove wall of the reserved groove g1 and extend along the translation direction of the housing 1. The racks g4 are fixedly connected to the upper groove wall of the reserved groove g1. The drive motor 211 is disposed on the top of the housing 1. When working, the dual-head motor rotates to drive the drive gears 215 connected to the rotating shafts 212 to rotate, so that the rotating drive gears 215 can move linearly along the extension direction of the racks g4, thereby driving the drive motor 211 to translate, and thus causing the housing 1 fixedly connected to the drive motor 211 to translate. The direction of movement of the housing 1 can be adjusted by changing the rotation direction of the dual-head motor.

[0049] Since the forward and backward translation of the housing 1 and the vertical movement of the smoke guide plate are both controlled by a dual-head motor, when the housing 1 is in the working state, in order to maintain the stability of the housing 1, it is necessary to avoid the dual-head motor driving the vertical lifting and lowering of the smoke guide plate and the translation of the housing 1 simultaneously. Therefore, the drive mechanism 21 also includes a bidirectional damper 216 sleeved on the rotating shaft 212. The drive gear 215 is connected to the bidirectional damper 216. Furthermore, the bidirectional damper 216 is set with a threshold torque. When the output torque of the drive motor 211 is greater than the threshold torque, the bidirectional damper 216 rotates. When the output torque of the drive motor 211 is less than the threshold torque, the bidirectional damper 216 does not rotate. Therefore, when the housing is in the working state, it is only necessary to adjust the output torque of the drive motor 211 to ensure that the drive gear 215 is in a fixed state when the rotating shaft 212 rotates.

[0050] In this embodiment, the cooperative structure of the drive mechanism 21 and the transmission mechanism 22 enables a single dual-head motor to control the outward rotation of the smoke guide plates on both sides of the housing 1, and to control the outward rotation of the smoke guide plates on both sides simultaneously. Furthermore, by setting a bidirectional damper 216 on the rotating shaft 212, the dual-head motor can also control the housing 1 to switch between a stopped state hidden inside the base g and a working state exposed outside the base g, which significantly simplifies the internal structure of this smoke collection device and facilitates manufacturing.

[0051] In this embodiment, the transmission mechanism 22 further includes a first shaft 227 extending in the left-right direction and a second shaft 228 extending in the left-right direction. A first moving gear 221 is slidably sleeved on the first shaft 227, a first output wheel 223 is fixedly sleeved on the first shaft 227, a second moving gear 222 is slidably sleeved on the second shaft 228, a second output wheel 224 is fixedly sleeved on the second shaft 228, and a driver 225 is slidably sleeved on the second shaft 228. The driver 225 is used to drive the first shaft 227 to slide in the left-right direction, thereby engaging the second output wheel 224 and the second moving gear 222. The driver 225 is configured to... A spring-loaded reset element 226 is provided to drive the second shaft 228 to reset. It should be noted that the driver 225 is a solenoid valve, and the spring-loaded reset element 226 is a spring. The spring is sleeved on the outer end of the first shaft 227. During operation, the solenoid valve can apply a continuous pushing force to the first shaft 227 in the left or right direction, causing the first shaft 227 to slide towards the first moving gear 221 until the first moving gear 221 engages with the first output wheel 223. During this period, the spring is compressed. When the solenoid valve cancels the pushing force applied to the first shaft 227, the spring force drives the first shaft 227 to reset.

[0052] In this embodiment, the smoke guide plate at the smoke inlet 11 is multi-layered, and the smoke inlet 11 is provided with a vertically extending movable slide rail 5 and a flip slide rail 6 inclined to the movable slide rail 5. The distance between the movable slide rail 5 and the flip slide rail 6 gradually decreases from bottom to top. The smoke guide plate is slidably connected to the movable slide rail 5 and the flip slide rail 6 at the same time. The smoke guide plate driving mechanism 4 is used to drive multiple smoke guide plates to slide along the movable slide rail 5, so that the smoke guide plate gradually flips outward when sliding upward along the movable slide rail 5.

[0053] Specifically, the smoke guide plate has a sliding pivot 34 extending forward and backward. The smoke guide plate is connected to a mating part 35 with the sliding pivot 34 as the rotation center. The sliding pivot 34 is located near the top edge of the smoke guide plate. The sliding pivot 34 is slidably connected to the moving slide rail 5. The mating part 35 is slidably connected to the flipping slide rail 6. When the smoke guide plate slides upward along the trajectory of the moving slide rail 5 and the flipping slide rail 6 under the drive of the smoke guide plate drive mechanism 4, the distance between the moving slide rail 5 and the flipping slide rail 6 gradually decreases from bottom to top. The mating part 35 will be subjected to an outward pushing force exerted on it by the flipping slide rail 6, causing the mating part 35 to rotate during the upward sliding process, thereby pushing the smoke guide plate to gradually flip outward as it slides upward.

[0054] In this embodiment, both the front and rear sides of the smoke inlet 11 are provided with a movable slide rail 5 and a flip slide rail 6. The two ends of the sliding shaft 34 are respectively slidably connected to the corresponding movable slide rail 5. Both the front and rear sides of the smoke guide plate are connected with mating parts 35, and the two mating parts 35 are respectively slidably connected to the corresponding flip slide rail 6. The presence of movable slide rail 5 and flip slide rail 6 on both the front and rear sides of the smoke inlet 11 can improve the stability of the smoke guide plate during movement.

[0055] In this embodiment, the smoke guide plate is upright when it is at its lowest position, and flips to its maximum angle when it is at its highest position. This allows the smoke guide plate to move from its upright position at the lowest position to its flipped position at the maximum angle at the highest position. Therefore, users can adjust the position and angle of the smoke guide plate according to their actual needs to achieve the best oil fume control effect.

[0056] In this embodiment, the smoke guide plate driving mechanism 4 is used to drive the smoke guide plate 31 located on the top layer. The other smoke guide plates are linked with the smoke guide plate 31 on the top layer, so that they slide vertically along the moving slide rail 5 synchronously with the smoke guide plate 31 on the top layer. The vertical sliding distance of the multiple smoke guide plates gradually increases from top to bottom.

[0057] In this embodiment, the smoke guide plate driving mechanism 4 includes an output wheel driven to rotate by a drive source. The output wheel includes a first output wheel 223 and a second output wheel 224. A pull rope 41 is connected to the output wheel and is connected to the top-level smoke guide plate 31. The first output wheel 223 or the second output wheel 224 is connected to the pull rope 41. When the first output wheel 223 or the second output wheel 224 rotates under the drive of the drive motor 211, it drives the pull rope 41 to move. The pull rope 41 connects to the top-level smoke guide plate 31, thus enabling the top-level smoke guide plate 31 to move vertically. It should be noted that the drive source here is the drive motor 211 described in this embodiment.

[0058] In this embodiment, the top-level smoke guide plate 31 is equipped with a linkage pulley 43. The second-level smoke guide plate 32 is connected to a first linkage rope 45. The first linkage rope 45 is connected to the linkage pulley 43, and one end of the first linkage rope 45 is connected to the second-level smoke guide plate 32, while the other end is fixedly connected to the bottom of the housing 1. This allows the top-level smoke guide plate to rise vertically, driving the second-level smoke guide plate 32 to rise vertically as well. In this structure, refer to... Figure 8 The first linkage rope 45 moves a distance relative to the linkage pulley 43 that is twice the vertical rising height of the top layer of smoke guide plate 32, so that the vertical rising height of the second layer of smoke guide plate 32 from top to bottom is twice the vertical rising height of the top layer of smoke guide plate 31.

[0059] In this embodiment, refer to Figure 9 A fixed pulley 46 is provided at the smoke inlet 11. The third layer of smoke guide plate 33 from the top is connected to a second linkage rope 47. The second linkage rope 47 sequentially drives the linkage pulley 43 and the fixed pulley 46, and is connected to the top layer of smoke guide plate 31. When the top layer of smoke guide plate 31 rises vertically, it can drive the second linkage rope 47 to move, thereby driving the third layer of smoke guide plate 33 from the top to move. In this structure, the distance that the second linkage rope 47 moves relative to the linkage pulley 43 is three times the vertical rise height of the top layer of smoke guide plate 32, so that the vertical rise height of the second layer of smoke guide plate 32 from the top is three times the vertical rise height of the top layer of smoke guide plate 32.

[0060] In this embodiment, the smoke guide plate at the smoke inlet 11 on one side of the housing 1 is generally configured with three layers, and the three layers of smoke guide plates are arranged vertically in sequence.

[0061] In this embodiment, the housing 1 is provided with two oil filters 7, which are used to intercept grease from the fumes drawn in by the two smoke inlets 11. The housing 1 is provided with an oil box 8 below the two oil filters 7, which is used to collect the grease dripping from the two oil filters 7. It can intercept the grease from the fumes drawn in by the two smoke inlets 11 and collect it by the oil box 8, thereby preventing grease from falling on the stove and contaminating the stove.

[0062] In this embodiment, the oil mesh 7 gradually slopes towards the middle of the smoke collection chamber from the top edge to the bottom edge of the shell 1. The two oil meshes 7 are combined to form an inverted V-shaped structure. The surface of the oil mesh 7 is provided with a plurality of guide grooves 72 spaced apart from each other in the front-back direction. The grease intercepted on the oil mesh 7 can be guided into the oil box 8 under the guidance of the guide grooves 72.

[0063] In this embodiment, the top edge of the oil mesh 7 is connected to the top of the housing 1, and the bottom edge of the oil mesh 7 is connected to the oil box 8, so that the two oil meshes 7 and the oil box 8 form a separation structure. The separation structure divides the smoke collection chamber into an inner smoke gathering area and an outer smoke inlet area. The rear of the housing 1 is provided with a smoke exhaust port, and the smoke exhaust port corresponds to the smoke gathering area.

[0064] In this embodiment, the bottom edges of the oil box 8 and the two oil filters 7 are provided with multiple sets of connecting components 9. The movement of the oil box 8 relative to the oil filters 7 causes the connecting components 9 to switch between a locked state and an unlocked state. In the locked state, the oil box 8 and the oil filters 7 are tightly connected, which can prevent the oil box 8 from accidentally falling off or moving, thereby ensuring the normal operation and safety of the smoke collection device. In the unlocked state, the user can remove the oil box 8 from the oil filters 7 for cleaning or replacement.

[0065] In this embodiment, the bottom edge of the oil mesh 7 is provided with a first folded edge 71 extending outward from the oil mesh 7, and the top edges on both sides of the oil box 8 are provided with a second folded edge 81 extending outward from the oil box 8. The first folded edge 71 and the second folded edge 81 fit together. At this time, the contact surface between the first folded edge 71 and the second folded edge 81 forms a sealing structure, thereby preventing grease from leaking from between the oil box 8 and the bottom edge of the oil mesh 7.

[0066] The connecting assembly 9 includes a connecting groove 91 and a connector 92. One of the connecting groove 91 and the connector 92 is located on the first folded edge 71, and the other is located on the second folded edge 81. The connecting groove 91 includes an unlocking section and a locking section that are connected together. The connector 92 includes a connecting handle 921 and a locking part 922 connected to the connecting handle 921. The connecting handle 921 can pass through the unlocking section and the locking section, while the locking part 922 can pass through the unlocking section but cannot pass through the locking section. The connector 92 slides along the connection direction of the unlocking section and the locking section, so that the locking part 922 corresponds to the unlocking section or the locking section. When the locking part 922 corresponds to the unlocking section, the connecting assembly 9 is in the unlocked state. At this time, the user can remove the oil box 8 from the oil filter 7 to clean or replace the oil box 8. When the locking part 922 corresponds to the locking section, the connecting assembly 9 is in the locked state, ensuring a tight connection between the oil box 8 and the oil filter 7.

[0067] In this embodiment, the front end plate 12 of the housing 1 is provided with a window that allows the oil box 8 to pass through. The front end of the oil box 8 is provided with a handle structure 82. The handle is used to pull the oil box 8 in the front and back direction. The unlocking section and the locking section are connected in the front and back direction. When the user needs to remove the oil box 8 from the housing 1, he can pull the oil box 8 forward through the handle structure 82 so that the locking part 922 corresponds to the unlocking section. At this time, the oil box 8 is moved downward until the connecting part 92 disengages from the connecting groove 91. Then the oil box 8 can be pulled out from the window. This allows the oil box 8 to be removed from the housing 1 without removing the front end plate 12 of the housing 1, which is convenient.

[0068] Example 2:

[0069] A method for controlling a range hood, implemented using the range hood of Example 1, includes the following steps:

[0070] When cooking begins, the drive assembly 2 drives the housing 1 to slide forward and switches from a stopped state hidden inside the base g to a working state exposed outside the base g. It detects the smoke concentration at the two smoke inlets 11 and controls the drive assembly to adjust the smoke guide plate 3 to the corresponding position based on the detection results.

[0071] In this embodiment, when the smoke guide plate 3 is in the lowest position, the smoke guide plate 3 is in the lowest position and its flip angle is 0°. When the smoke guide plate 3 is in the highest position, the smoke guide plate 3 is in the highest position and its flip angle is 90°. Multiple smoke guide plates 3 are stacked.

[0072] When users cook in the kitchen, different cooking methods produce different amounts and directions of fumes. To adapt to different cooking methods, the smoke guide plate 3 has four settings, and the rotation angle of the smoke guide plate 3 from low to high corresponds to 0°, 30°, 60°, and 90°. The higher the setting, the stronger the smoke guide plate 3's effect on gathering fumes, and the higher the smoke extraction efficiency of the range hood. Therefore, users can adjust the setting of the smoke guide plate 3 to adapt to different cooking methods, thereby enhancing the adaptability of the range hood and improving user satisfaction.

[0073] In this embodiment, the smoke guide plate 3 is adjusted to the highest level and maintained for a period of time. If the oil fume concentration detected by the smoke inlet 11 does not decrease to the oil fume concentration corresponding to the highest level, the smoke extraction power of the fan device h is increased. When the smoke extraction power of the fan device h is increased, the smoke inlet 11 of the housing 1 has an increased ability to absorb smoke, so that the range hood can absorb and exhaust the smoke generated during cooking more quickly.

[0074] In this embodiment, the suction power of the fan device h is set to multiple levels, each matching a different range of oil fume concentrations. This allows the user to select the appropriate suction power level based on the concentration of oil fumes generated during cooking. On one hand, this avoids overloading the fan device h at high oil fume concentrations or inefficiently idling at low oil fume concentrations, thus effectively reducing energy consumption. On the other hand, the multi-level suction power design of the fan device h allows the range hood to adapt to changes in oil fume concentrations generated by different cooking methods, ensuring that oil fumes are always effectively treated. This also contributes to improving the user experience.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for a range hood, characterized in that, Applied to range hoods; a reserved groove (g1) is provided in the base (g), and an opening (g2) is formed in the reserved groove (g1) on the base surface; the range hood includes a smoke collection device and a fan device (h) provided in the reserved groove (g1), and a flexible pipe (m) connecting the smoke collection device and the fan device (h); The smoke collection device includes a housing (1) that can move back and forth and has a smoke collection chamber inside, and a drive assembly; at least one side of the housing (1) is provided with a smoke inlet (11), and a plurality of smoke guide plates (3) are provided at the smoke inlet (11). The smoke guide plates (3) are slidable and gradually flip outward when sliding. The smoke guide plates (3) are set with a plurality of positions, and each position is matched with a corresponding sliding distance and flipping angle; the drive assembly (2) is used to drive the housing (1) to move back and forth and the smoke guide plates (3) to slide. The drive assembly includes a drive mechanism (21) and a transmission mechanism (22); the transmission mechanism (22) includes a first moving gear (221), a second moving gear (222), and a first output wheel (223) that can move in the left and right directions, and also includes a second output wheel (224) with a fixed position and a driver (225); the first output wheel (223) and the second output wheel (224) are respectively used to drive the vertical sliding of the smoke guide plates (3) on both sides; the drive mechanism (21) is used to synchronously drive the first moving gear (221) and the second moving gear (222) to rotate and move in the same direction, so that the first moving gear (221) and the first output wheel (223) are engaged, or the second moving gear (222) and the second output wheel (224) are engaged; The driver (225) is used to drive the second output wheel (224) to move and engage with the second output wheel (224) and to drive the second output wheel (224) to reset; the drive mechanism (21) includes a drive motor (211) configured as a dual-head motor, two rotating shafts (212) mounted on the drive motor (211), and a first fixed gear (213) and a second fixed gear (214) respectively connected to the two rotating shafts (212); the drive motor (211) is configured as a dual-head motor and is mounted on the housing (1); the first fixed gear (213) and the first moving gear (221) mesh and both are helical gears, and the second fixed gear (214) and the second moving gear (222) mesh and both are helical gears; The first output wheel (223) or the second output wheel (224) is connected to a pulling rope (41). When the first output wheel (223) or the second output wheel (224) rotates under the drive of the drive motor (211), it drives the pulling rope (41) to move. The pulling rope (41) is connected to the top layer smoke guide plate (31). The top layer smoke guide plate (31) is equipped with a linkage pulley (43). The second layer smoke guide plate (32) from top to bottom is connected to a first linkage rope (45). The first linkage rope (45) is connected to the linkage pulley (43). One end of the first linkage rope (45) is connected to the second layer smoke guide plate (32) from top to bottom, and the other end is fixedly connected to the... At the bottom of the housing (1), when the top layer of the smoke guide plate (31) rises vertically, it can drive the second layer of the smoke guide plate (32) from top to bottom to rise vertically. A fixed pulley (46) is provided at the smoke inlet (11). The third layer of the smoke guide plate (33) from top to bottom is connected to a second linkage rope (47). The second linkage rope (47) sequentially drives the linkage pulley (43) and the fixed pulley (46), and is connected to the top layer of the smoke guide plate (31). When the top layer of the smoke guide plate (31) rises vertically, it can drive the second linkage rope (47) to move, thereby driving the third layer of the smoke guide plate (33) from top to bottom connected to one end of the second linkage rope (47) to move. The control method includes the following steps: When cooking begins, the drive assembly (2) drives the housing (1) to slide forward and switches from a stopped state hidden inside the base (g) to a working state exposed outside the base (g); detect the smoke concentration at the two smoke inlets (11), and control the drive assembly (2) to drive the smoke guide plate (3) to adjust to the corresponding position according to the detection results.

2. The control method for a range hood according to claim 1, characterized in that, When the smoke guide plate (3) is in the lowest position, the smoke guide plate (3) is in the lowest position and its flip angle is 0; when the smoke guide plate (3) is in the highest position, the smoke guide plate (3) is in the highest position and its flip angle is 90°, and multiple smoke guide plates (3) are stacked.

3. The control method for a range hood according to claim 2, characterized in that, The smoke guide plate (3) has four positions, and the flip angles of the smoke guide plate (3) from low to high are 0°, 30°, 60° and 90° respectively.

4. The control method for a range hood according to claim 1, characterized in that, If the smoke guide plate (3) is adjusted to the highest level and maintained for a period of time, and the smoke concentration detected by the smoke inlet (11) does not decrease to the smoke concentration corresponding to the highest level, then the smoke extraction power of the fan device (h) is increased.

5. The control method for a range hood according to claim 4, characterized in that, The smoke extraction power of the fan device (h) is set to multiple levels, each level being matched with a different range of oil fume concentration.

6. The control method for a range hood according to claim 1, characterized in that, The drive mechanism (21) further includes a drive gear (215) driven by the shaft (212) and a rack (g4) meshing with the drive gear (215); the rack (g4) is fixed in position and extends in the front-back direction.

7. The control method for a range hood according to claim 6, characterized in that, The drive mechanism (21) further includes a bidirectional damper (216) sleeved on the rotating shaft (212), and the drive gear (215) is connected to the bidirectional damper (216). The bidirectional damper (216) is set with a threshold torque. When the output torque of the drive motor (211) is greater than the threshold torque, the bidirectional damper (216) rotates. When the output torque of the drive motor (211) is less than the threshold torque, the bidirectional damper (216) does not rotate.

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