Smoke assembly, range hood and control method of range hood

Abstract

The present application relates to the technical field of range hood, disclose a smoke collecting assembly, range hood and control method of range hood, smoke collecting assembly includes: fixed part, provided with first air inlet and detection device, smoke collecting cavity, provided with two, respectively along left and right direction slidably connected with fixed part, smoke collecting cavity is equipped with second air inlet, each smoke collecting cavity has at least part corresponding first air inlet is shielded, or at least part second air inlet and corresponding first air inlet coincides with initial position, and corresponding first air inlet is completely exposed open position, guide smoke plate, drive device, including first push assembly, and the second push assembly capable of pushing the first push assembly moves along left and right direction, smoke collecting assembly has first working state and second working state, first working state, guide smoke plate opens and two smoke collecting cavities are located in initial position, second working state, guide smoke plate opens and at least one smoke collecting cavity is located in open position.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, specifically to a smoke collection assembly, a range hood, and a control method for the range hood. Background Technology

[0002] Range hoods have become essential kitchen appliances. A related technology discloses a dual-electric flip-up side-suction range hood, which uses two independently controlled push rod motors to rotate the left and right flip-up panels. One panel can be opened individually, or multiple panels (two or more) can be opened simultaneously. When using a specific burner, opening only one panel reduces the air intake area and the negative pressure zone. However, in actual use, sometimes the fumes are too heavy, and even with multiple panels open simultaneously, some fumes cannot be effectively removed, resulting in poor smoke extraction. Summary of the Invention

[0003] In view of this, the present invention provides a smoke collection component, a range hood, and a control method for the range hood, in order to solve the problem of poor smoke extraction effect of range hoods in related technologies.

[0004] In a first aspect, the present invention provides a smoke collection assembly, comprising:

[0005] The fastener is equipped with a first air inlet and a detection device, wherein the detection device is used to detect the concentration of oil fumes.

[0006] The smoke collection chamber has two chambers, which are slidably connected to the fixing member in the left and right directions. Each smoke collection chamber has a second air inlet. Each smoke collection chamber has an initial position in which at least part of the corresponding first air inlet is blocked, or at least part of the second air inlet coincides with the corresponding first air inlet, and an open position in which the corresponding first air inlet is fully exposed.

[0007] Smoke guide plates are provided in a one-to-one correspondence with the smoke collection chambers, and the smoke guide plates are openable and closable outside the smoke collection chambers;

[0008] The driving device includes a first pushing component that is connected to the smoke guide plate one by one, and a second pushing component that is connected to the first pushing component and can push the first pushing component to move in the left and right direction. The first pushing component has a driving part that passes through the smoke collection chamber and is connected to the smoke guide plate.

[0009] The smoke collection assembly has a first working state and a second working state. In the first working state, the smoke guide plate is open and both smoke collection chambers are located in the initial position. In the second working state, the smoke guide plate is open and at least one smoke collection chamber is located in the open position.

[0010] Beneficial effects: When the range hood needs to operate, if the detection device detects a low concentration of cooking fumes, the smoke collection assembly switches to its first operating state. Two first pushing components open the guide plates, exposing the second air inlets on the smoke collection chamber. At this time, the left first air inlet is blocked or at least partially overlaps with the left second air inlet, and the right first air inlet is blocked or at least partially overlaps with the right second air inlet. Cooking fumes can enter the smoke collection chamber through the second air inlets. When the detection device detects a high concentration of cooking fumes, the smoke collection assembly switches to its second operating state. The second pushing component pushes at least one of the first pushing components outward. Since the driving part of the first pushing component passes through the smoke collection chamber and is connected to the guide plates, the first pushing component moves the smoke collection chamber along with it. When the smoke collection chamber moves to the open position, both the first and second air inlets on that side are exposed, increasing the negative pressure air intake range in the left and right directions, thereby enhancing the smoke extraction effect.

[0011] In one optional embodiment, the first air inlet includes a plurality of first air inlet grilles extending vertically, and the second air inlet includes a plurality of second air inlet grilles arranged at an incline. When the smoke collection chamber is in the initial position, the second air inlet grilles overlap with at least partially corresponding first air inlet grilles.

[0012] Beneficial effects: When the smoke collection chamber is in the initial position, the second air inlet grille overlaps with at least part of the first air inlet grille. At this time, the oil fumes only enter the smoke collection chamber through the second air inlet. Since the second air inlet grille is inclined and has a large length, the negative pressure air inlet range can be increased.

[0013] In one optional embodiment, the fixing member includes a first outer appearance member and a hidden member located on both sides of the first outer appearance member. The hidden member is provided with the first air inlet, and the first outer appearance member is provided with the detection device. When the smoke guide plate is closed, the first outer appearance member is located between the two smoke guide plates.

[0014] Beneficial effects: The design of the first exterior component makes the entire smoke collection assembly look neat and beautiful when the smoke guide plate is closed. At the same time, due to the movable design of the smoke collection chamber, the design of the first exterior component also makes it easy to connect with other components of the range hood, such as the fan casing. By setting the detection device on the first exterior component, the oil fume concentration on the left and right sides can be detected simultaneously.

[0015] In one optional embodiment, the concealed component and the smoke collection chamber are connected by a first sliding assembly. The first sliding assembly includes a first sliding component disposed at the upper and lower ends of the concealed component and a first sliding engagement component disposed on the smoke collection chamber. The first sliding component and the first sliding engagement component are slidably engaged.

[0016] Beneficial effects: The first sliding component can guide the movement of the smoke collection chamber, making the movement of the smoke collection chamber smoother.

[0017] In one alternative embodiment, the first sliding member is a first slide rail, and the first sliding mating member is a first slider.

[0018] Beneficial effect: Since the hidden part is fixed, it is more appropriate to set the first slide rail on the hidden part.

[0019] In one alternative implementation, the first actuating component includes:

[0020] The fixed rod is connected to the second pushing assembly;

[0021] The second sliding assembly includes a second sliding member and a second sliding engagement member that are slidably engaged. The second sliding member is hinged to one end of the fixed rod, and the driving part is provided at one end of the second sliding engagement member.

[0022] The first push rod motor has one end hinged to the fixed rod and the other end hinged to the second sliding fit.

[0023] Beneficial effects: When the smoke guide plate needs to be opened, the push rod of the first push rod motor extends continuously, driving the second sliding mating part to rotate slowly. At the same time, the second sliding mating part slides relative to the second sliding part. Therefore, the smoke guide plate can be rotated and opened while extending outward by a certain distance, so that the bottom of the smoke guide plate is farther away from the smoke collection chamber, and can collect a larger range of oil fumes.

[0024] In one alternative embodiment, the second slider is a second block slider, and the second sliding engagement member is a second slide rail.

[0025] Beneficial effects: When the smoke guide plate needs to be opened, the push rod of the first push rod motor extends continuously, driving the second slide rail to rotate slowly. At the same time, the second slide rail slides relative to the second slider, so that the smoke guide plate can rotate and open while extending outward a certain distance, making the bottom of the smoke guide plate farther from the smoke collection chamber, and able to collect a larger area of ​​oil fumes.

[0026] In one optional embodiment, the second slider includes a slider body, with concave rails on both sides of the slider body, a first limiting block at one end of the concave rail, and a second limiting block at the rear end of the second slider. The second limiting block is disposed in the concave rail, and when the second slider slides to the rear end of the second slider, the first limiting block and the second limiting block abut against each other.

[0027] Beneficial effects: When the smoke guide plate needs to be opened, the push rod of the first pusher motor extends continuously, driving the second slide rail to rotate slowly. Simultaneously, the second slide rail slides relative to the second slider. Initially, the second slider is completely within the second slide rail, allowing the smoke guide plate to rotate and extend outwards a certain distance as it opens. When the second slider slides to the rear end of the second slide rail, the first and second limiting blocks abut against each other, preventing the second slide rail from extending further. The second limiting block also prevents the second slider from detaching from the second slide rail. Afterward, the push rod of the first pusher motor continues to extend, driving the second slide rail and the second slider to rotate together until the smoke guide plate is fully open. The concave rails on both sides of the slider body allow the second slider to extend beyond the second slide rail, thus allowing the bottom of the smoke guide plate to be further from the smoke collection chamber, concentrating a larger area of ​​oil fumes.

[0028] In one optional embodiment, the second slider further includes protrusions on both sides of the slider body, and the second slide rail is provided with a groove that matches the protrusions.

[0029] Beneficial effects: By setting protrusions on both sides of the slider body and setting grooves in the second slide rail, the sliding stability of the second slider and the second slide rail can be further improved.

[0030] In one alternative embodiment, the protrusion is hinged to one end of the fixing rod.

[0031] Beneficial effects: By hinged to one end of the fixed rod with the protrusion, and because the protrusion protrudes from the slider body and is slidably set in the groove, interference is not likely to occur during movement.

[0032] In one alternative embodiment, an assembly space is provided at one end of the second slide rail away from the second limiting block, and the second slider is adapted to be assembled into the second slide rail through the assembly space.

[0033] Beneficial effects: The assembly space facilitates the installation of the second slider into the second slide rail. Since the second slider is hinged to the fixed rod after assembly, the second slider will not fall out of the assembly space.

[0034] In one alternative embodiment, the drive unit is inclined upward relative to the second slide rail.

[0035] Beneficial effects: By tilting the drive unit upwards, the smoke guide plate can be tilted at a certain angle when opened, which can gather a larger area of ​​oil fumes.

[0036] In one optional embodiment, when the second slide rail is in a horizontal state, the smoke guide plate is fully opened, and the opening angle of the smoke guide plate is equal to the tilt angle of the drive unit.

[0037] Beneficial effects: When the second slide rail is in a horizontal state, the smoke guide plate is fully opened. At this time, the extension stroke of the first push rod reaches its maximum. Since the drive unit is tilted, the smoke guide plate is perpendicular to the drive unit. Therefore, the opening angle of the smoke guide plate is equal to the tilt angle of the drive unit, which can prevent the first push component from moving to the dead point due to the upward tilt of the second slide rail.

[0038] In one optional embodiment, the fixed rod is provided with a support structure, which supports the second slide rail when the smoke guide plate is closed.

[0039] Beneficial effect: By setting a support structure on the fixed rod, when the smoke guide plate is closed, the support structure supports the second slide rail, preventing the second slide rail from sliding relative to the second slider and causing the smoke guide plate to open.

[0040] In one alternative implementation, the second actuating component includes:

[0041] slide bar;

[0042] The second push rod motor includes a housing and a movable end, the movable end being hinged to the middle of the slide rod;

[0043] A rotating motor, the output shaft of which is fixedly connected to the movable end;

[0044] Two push rods are symmetrically arranged, and the push rods are slidably connected to the slide rods. The end of the push rod is connected to the end of the fixed rod.

[0045] Two connecting rods are provided symmetrically. One end of the connecting rod is hinged to the housing, and the other end is hinged to the push rod.

[0046] Beneficial effects: When the smoke collection chamber is in its initial position, the push rod of the second push rod motor extends. When the oil fume concentration is high and the oil fume concentrations on the left and right sides are equal, the rotary motor does not work, the push rod of the second push rod motor retracts, and the movable end is fixed by the rotary motor and cannot move. The housing retracts relative to the push rod, driving the connecting rod to rotate. The connecting rod drives the push rod to slide outward. Since the end of the push rod is connected to the end of the fixed rod, it drives the fixed rod and the two first push components to move, moving the smoke collection chamber to the open position. When the oil fume concentration on the left side is greater than that on the right side, the rotary motor drives the first push rod motor to rotate to the left, the push rod of the second push rod motor retracts, the housing drives the connecting rod on the left side to rotate, thereby driving the push rod on the left side to extend, causing the smoke collection chamber on the left side to move to the open position. When the oil fume concentration on the right side is greater than that on the left side, the rotary motor drives the first push rod motor to rotate to the right, the push rod of the second push rod motor retracts, the housing drives the connecting rod on the right side to rotate, thereby driving the push rod on the right side to extend, causing the smoke collection chamber on the right side to move to the open position.

[0047] In one optional embodiment, a third limiting block is provided in the middle of the slide rod. When the smoke collection chamber is in the initial position, the push rod abuts against the third limiting block, and the movable end is hinged to the third limiting block.

[0048] Beneficial effects: The third limit block can limit the sliding stroke of the push rod and facilitates connection with the movable end.

[0049] In one optional embodiment, a third slide rail extending vertically is provided on the outer side of the smoke collection chamber. The middle of the third slide rail is provided with a strip-shaped hole through which the driving part passes. The two sides of the strip-shaped hole are slide tracks. The smoke collection assembly also includes a second appearance component. The second appearance component is connected to the driving part and slides with the slide track. When the smoke guide plate is opened, the second appearance component blocks the strip-shaped hole.

[0050] Beneficial effects: The strip-shaped hole allows the drive unit to pass through and rotate. By connecting the drive unit to the second appearance component, when the smoke guide plate is opened, the drive unit moves to the upper end of the strip-shaped hole. At this time, the second appearance component covers the strip-shaped hole, resulting in a neat and beautiful appearance.

[0051] In one optional embodiment, the second exterior component has a through-hole, the length of which is greater than the length of the driving part, and the driving part passes through the through-hole;

[0052] And / or, the top of the third slide rail is provided with a first limiting edge, and when the smoke guide plate is opened, the second appearance component abuts against the first limiting edge.

[0053] Beneficial effects: Because the length of the opening is greater than the length of the drive unit, it facilitates the rotation of the smoke guide plate relative to the second exterior component. Furthermore, the opening facilitates the connection between the drive unit and the second exterior component. The first limiting edge can limit the opening position of the smoke guide plate.

[0054] In one optional embodiment, the smoke collection chamber is provided with a fourth limiting block, and when the smoke collection chamber is in the open position, the fourth limiting block abuts against the casing of the range hood.

[0055] Beneficial effect: The fourth limiting block can limit the movement of the smoke collection chamber, ensuring that the smoke collection chamber can collect smoke normally.

[0056] Secondly, the present invention also provides a range hood, including: the aforementioned smoke collection assembly.

[0057] Thirdly, the present invention also provides a control method for a range hood, applied to the aforementioned range hood, the control method comprising:

[0058] Obtain the concentration of cooking fumes;

[0059] Determine if the concentration of cooking fumes exceeds the preset value.

[0060] If so, switch the smoke collection component to the second state;

[0061] If not, switch the smoke collection assembly to the first state.

[0062] Beneficial effects: When the smoke concentration detected by the detection device is less than or equal to a preset value, the smoke collection assembly switches to the first working state. The two first pushing components respectively push the smoke guide plate open, exposing the second air inlet on the smoke collection chamber. At this time, the first air inlet on the left is blocked or at least partially overlaps with the second air inlet on the left, and the first air inlet on the right is blocked or at least partially overlaps with the second air inlet on the right. Smoke can enter the smoke collection chamber through the second air inlet. When the smoke concentration detected by the detection device is greater than the preset value, the smoke collection assembly switches to the second working state. The second pushing component pushes at least one of the first pushing components outward. Since the driving part of the first pushing component passes through the smoke collection chamber and is connected to the smoke guide plate, the first pushing component moves outward, causing the smoke collection chamber to move along with it. When the smoke collection chamber moves to the open position, both the first and second air inlets on that side are exposed, increasing the negative pressure air intake range in the left and right directions, thereby enhancing the smoke extraction effect.

[0063] In one alternative implementation, switching the smoke collection assembly to the second state includes:

[0064] If the oil fume concentration on the left side is greater than that on the right side, the second pushing component will push the smoke collection chamber on the left side to move to the open position.

[0065] If the oil fume concentration on the left side is less than that on the right side, the second pushing component will push the smoke collection chamber on the right side to move to the open position.

[0066] If the oil fume concentration on the left side is equal to that on the right side, the second pushing component will simultaneously push both smoke collection chambers to the open position.

[0067] Beneficial effect: The position of the smoke collection chamber can be adjusted according to the relationship between the smoke concentration on the left and right sides, which can further improve the smoke extraction effect. Attached Figure Description

[0068] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0069] Figure 1This is a schematic diagram of the structure of a smoke collection assembly according to an embodiment of the present invention when the smoke guide plate is opened;

[0070] Figure 2 This is a front view of a smoke collection assembly according to an embodiment of the present invention, with the smoke guide plate removed and the smoke collection chambers on both the left and right sides in their initial positions.

[0071] Figure 3 This is a front view of a smoke collection assembly according to an embodiment of the present invention, with the smoke guide plate removed and the smoke collection chambers on both the left and right sides in the open position.

[0072] Figure 4 This is a front view of a smoke collection assembly according to an embodiment of the present invention, with the smoke guide plate removed and the left smoke collection chamber in the initial position and the right smoke collection chamber in the open position.

[0073] Figure 5 This is a front view of a smoke collection assembly according to an embodiment of the invention, with the smoke guide plate removed and the left smoke collection chamber in the open position and the right smoke collection chamber in the initial position.

[0074] Figure 6 This is a schematic diagram of the structure of the second propulsion component;

[0075] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0076] Figure 8 This is a front view of the second push assembly when both the left and right smoke collection chambers are in their initial positions.

[0077] Figure 9 This is a front view of the second push assembly with the left smoke collection chamber in its initial position and the right smoke collection chamber in its open position.

[0078] Figure 10 This is a front view of the second push assembly with the left smoke collection chamber in the open position and the right smoke collection chamber in the initial position.

[0079] Figure 11 This is a front view of the second push assembly when both the left and right smoke collection chambers are in the open position.

[0080] Figure 12 This is a side view of the drive unit when the smoke guide plate is closed.

[0081] Figure 13 This is a side view of the drive unit during the opening of the smoke guide plate;

[0082] Figure 14 This is a side view of the drive unit when the smoke deflector is open;

[0083] Figure 15This is a schematic diagram of the structure after the second slide rail and the second slider are assembled together.

[0084] Figure 16 The front view after the second slide rail and the second slider are assembled together;

[0085] Figure 17 This is a schematic diagram of the structure when the second slide rail and the second slider are separated.

[0086] Figure 18 This is a rear sectional view of the smoke collection assembly when both the left and right smoke collection chambers are in their initial positions.

[0087] Figure 19 This is a rear sectional view with both the left and right smoke collection chambers in the open position.

[0088] Figure 20 for Figure 19 Enlarged view of point B in the middle;

[0089] Figure 21 This is a schematic diagram of the smoke collection chamber from a first-view perspective when the smoke guide plate is closed.

[0090] Figure 22 This is a schematic diagram of the smoke collection chamber from a first-view perspective when the smoke guide plate is open.

[0091] Figure 23 This is a schematic diagram of the smoke collection chamber from a second perspective when the smoke guide plate is open.

[0092] Figure 24 This is a front view of the smoke collection assembly when the second exterior component is not installed in the third guide rail.

[0093] Figure 25 This is a structural schematic diagram of the second exterior component;

[0094] Figure 26 This is a cross-sectional view of the smoke collection assembly;

[0095] Figure 27 Another cross-sectional view of the smoke collection assembly;

[0096] Figure 28 This is a flowchart of a control method for a range hood according to an embodiment of the present invention.

[0097] Explanation of reference numerals in the attached figures:

[0098] 1. Smoke collection chamber; 101. Second air inlet; 102. First slider; 103. Third slide rail; 1031. Strip hole; 1032. Slide track; 1033. First limiting edge; 104. Fourth limiting block; 2. Smoke guide plate; 3. First pushing assembly; 301. Fixed rod; 3011. Support structure; 302. Second slider; 3021. Slider body; 3022. Concave rail; 3023. First limiting block; 3024. Protrusion; 303. Second slide rail; 3031. Second limiting block; 3032. Slide groove; 3033. Assembly space; 3034. First connecting part; 3 04. First push rod motor; 4. Second push assembly; 401. Second push rod motor; 4011. Housing; 4012. Movable end; 402. Slide rod; 4021. Third limit block; 4022. Limit plate; 403. Push rod; 4031. Second connecting part; 4032. Mounting part; 404. Connecting rod; 405. Rotating motor; 4051. Output shaft; 5. First exterior component; 6. Hidden component; 601. First air inlet; 602. First slide rail; 7. Drive unit; 8. Second exterior component; 801. Through port; 802. Sliding plate; 9. Housing; 10. Detection device. Detailed Implementation

[0099] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0100] The following is combined with Figures 1 to 27 The following describes embodiments of the present invention.

[0101] According to an embodiment of the present invention, in a first aspect, a smoke collection assembly is provided, including a fixing member, a smoke collection chamber 1, a smoke guide plate 2, and a driving device.

[0102] The fixture includes a first air inlet 601 and a detection device 10, which detects the concentration of oil fumes. Two smoke collection chambers 1 are provided, each slidably connected to the fixture in the left-right direction. Each smoke collection chamber 1 has a second air inlet 101. Each smoke collection chamber 1 has an initial position where at least a portion of the corresponding first air inlet 601 is blocked, or at least a portion of the second air inlet 101 overlaps with the corresponding first air inlet 601, and an open position where the corresponding first air inlet 601 is fully exposed. Smoke guide plates 2 are provided in one-to-one correspondence with each smoke collection chamber 1. 2 is openable and closable outside the smoke collection chamber 1; the driving device includes a first pushing component 3 connected to the smoke guide plate 2 in a one-to-one correspondence, and a second pushing component 4 connected to the first pushing component 3 and capable of pushing the first pushing component 3 to move in the left and right direction. The first pushing component 3 has a driving part, which passes through the smoke collection chamber 1 and is connected to the smoke guide plate 2; the smoke collection component has a first working state and a second working state. In the first working state, the smoke guide plate 2 is open and both smoke collection chambers 1 are in the initial position. In the second working state, the smoke guide plate 2 is open and at least one smoke collection chamber 1 is in the open position.

[0103] In this embodiment, when the range hood needs to work, if the detection device 10 detects a low concentration of oil fumes, the smoke collection assembly switches to the first working state. The two first pushing components 3 respectively push the smoke guide plate 2 to open, exposing the second air inlet 101 on the smoke collection chamber 1. At this time, the first air inlet 601 on the left is blocked or at least partially overlaps with the second air inlet 101 on the left side of the smoke collection chamber 1, and the first air inlet 601 on the right is blocked or at least partially overlaps with the second air inlet 101 on the right side of the smoke collection chamber 1. Oil fumes can enter the smoke collection chamber 1 through the second air inlet 101. When the detection device 10 detects a high concentration of oil fumes, it switches the smoke collection assembly to a second working state, causing the second pushing assembly 4 to push at least one of the first pushing assemblies 3 to move outward. Since the driving part of the first pushing assembly 3 passes through the smoke collection chamber 1 and is connected to the smoke guide plate 2, the first pushing assembly 3 will drive the smoke collection chamber 1 to move together when it moves outward. When the smoke collection chamber 1 on this side moves to the open position, the first air inlet 601 and the second air inlet 101 on this side are exposed, increasing the negative pressure air intake range in the left and right directions, thereby enhancing the smoke extraction effect.

[0104] It should be noted that the second air inlet 101 on the left smoke collection chamber 1 corresponds to the first air inlet 601 on the left, and the second air inlet 101 on the right smoke collection chamber 1 corresponds to the first air inlet 601 on the right.

[0105] It should be noted that the first pushing component 3 can operate simultaneously with the second pushing component 4, thereby enabling the opening of the smoke guide plate 2 and the movement of the smoke collection chamber 1 to occur simultaneously. Alternatively, the first pushing component 3 can be activated first, and the second driving component can be activated after the smoke guide plate 2 has opened. Another option is to activate the second driving component first, moving the smoke collection chamber 1 to the open position, and then activate the first driving component to open the smoke guide plate 2.

[0106] It should be noted that the two first pushing components 3 in this embodiment can work independently, thereby enabling the left smoke guide plate 2 or the right smoke guide plate 2 to be opened or closed separately, to adapt to the scenario where the user only uses one burner.

[0107] The sequence of closing the smoke guide plate 2 and moving the smoke collection chamber 1 from the open position to the initial position is the same.

[0108] In one embodiment, the first air inlet 601 includes a plurality of first air inlet grilles extending vertically, and the second air inlet 101 includes a plurality of second air inlet grilles arranged at an incline. When the smoke collection chamber 1 is in its initial position, the second air inlet grilles overlap with at least a portion of the first air inlet grilles.

[0109] In this embodiment, when the smoke collection chamber 1 is in the initial position, the second air inlet grille overlaps with at least part of the corresponding first air inlet grille. At this time, the oil fumes only enter the smoke collection chamber 1 through the second air inlet 101. Since the second air inlet grille is inclined and has a large length, the negative pressure air inlet range can be increased.

[0110] Specifically, such as Figures 1 to 5 As shown, the second air inlet grille on the left smoke collection chamber 1 and the second air inlet grille on the right smoke collection chamber 1 are symmetrically arranged.

[0111] In one embodiment not shown in the figure, the first air intake grille may be mesh-like or other shapes, and the second air intake grille may also be mesh-like or other shapes.

[0112] In one embodiment, such as Figures 19 to 24 , Figures 25 to 27 As shown, both the first and second air intake grilles extend vertically, with the height of the first air intake grille being greater than the height of the second air intake grille.

[0113] In this embodiment, since the height of the first air inlet grille is greater than the height of the second air inlet grille, when the smoke collection chamber 1 is in the initial position, part of the first air inlet grille overlaps with the second air inlet grille, and the remaining first air inlet grilles are blocked by the smoke collection chamber 1. When the smoke collection chamber 1 is in the open position, the corresponding first air inlet grilles are all exposed. Since the first air inlet grille has a large height, the negative pressure air inlet range can be increased, thus improving the smoke extraction efficiency.

[0114] Of course, in an embodiment not shown in the figure, the height of the first air intake grille may be equal to the height of the second air intake grille.

[0115] In one embodiment, such as Figure 1 and Figure 2 As shown, the fixing component includes a first appearance component 5 and a hidden component 6 located on both sides of the first appearance component 5. The hidden component 6 is provided with a first air inlet 601. The first appearance component 5 is provided with a detection device 10. When the smoke guide plate 2 is closed, the first appearance component 5 is located between the two smoke guide plates 2.

[0116] In this embodiment, the first appearance component 5 is provided so that when the smoke guide plate 2 is closed, the appearance of the entire smoke collection assembly is neat and beautiful. At the same time, since the smoke collection chamber 1 is movable, the first appearance component 5 is also convenient to be connected to other components of the range hood, such as the fan shell. The detection device 10 is set on the first appearance component 5, which can simultaneously detect the oil fume concentration on the left and right sides.

[0117] Of course, in one embodiment not shown in the figure, the fastener may not have the first appearance part 5.

[0118] In one embodiment, the concealed member 6 and the smoke collection chamber 1 are connected by a first sliding assembly. The first sliding assembly includes a first sliding member disposed at the upper and lower ends of the concealed member 6 and a first sliding engagement member disposed on the smoke collection chamber 1. The first sliding member and the first sliding engagement member are slidably engaged.

[0119] In this embodiment, the first sliding component can guide the movement of the smoke collection chamber 1, making the movement of the smoke collection chamber 1 smoother.

[0120] Specifically in one embodiment, such as Figure 26 and Figure 27 As shown, the first sliding member is the first slide rail 602, and the first sliding mating member is the first slider 102.

[0121] In this embodiment, since the hidden component 6 is fixed, it is more appropriate to set the first slide rail 602 on the hidden component 6.

[0122] Of course, in an embodiment not shown in the figure, the first slider can be a slider and the first sliding mating member can be a slide rail.

[0123] In one embodiment, such as Figures 12 to 17As shown, the first pushing assembly 3 includes a fixed rod 301, a second sliding assembly, and a first push rod motor 304. The fixed rod 301 is connected to the second pushing assembly 4; the second sliding assembly includes a second sliding member and a second sliding engagement member that are slidably engaged. The second sliding member is hinged to one end of the fixed rod 301, and one end of the second sliding engagement member is provided with a driving part 7; one end of the first push rod motor 304 is hinged to the fixed rod 301, and the other end is hinged to the second sliding engagement member.

[0124] In this embodiment, when the smoke guide plate 2 needs to be opened, the push rod of the first push rod motor 304 extends continuously, driving the second sliding engagement part to rotate slowly. At the same time, the second sliding engagement part slides relative to the second sliding part. Therefore, the smoke guide plate 2 can be rotated and opened while extending outward by a certain distance, so that the bottom of the smoke guide plate 2 is farther away from the smoke collection chamber 1, and can collect a larger range of oil fumes.

[0125] In one specific embodiment, the second sliding member is the second slider 302, and the second sliding mating member is the second slide rail 303.

[0126] In this embodiment, when the smoke guide plate 2 needs to be opened, the push rod of the first push rod motor 304 extends continuously, driving the second slide rail 303 to rotate slowly. At the same time, the second slide rail 303 slides relative to the second slider 302, so that the smoke guide plate 2 can rotate and open while extending outward by a certain distance, so that the bottom of the smoke guide plate 2 is farther away from the smoke collection chamber 1, and can collect a larger range of oil fumes.

[0127] In one embodiment not shown in the figure, the second sliding member can be a slide rail, and the second sliding mating member can be a slider. In this embodiment, since the driving part 7 is connected to the slider, in order to ensure that the driving part 7 passes through the smoke guide plate 2, two limiting points need to be set on the slide rail to limit the stroke of the slider.

[0128] Specifically, the second slide rail 303 is provided with a first connecting part 3034, and the end of the first push rod motor 304 is hinged to the first connecting part 3034.

[0129] In one specific embodiment, the bottom end of the fixed rod 301 is fixedly connected to the second pushing component 4, and the second slider 302 is hinged to the top end of the fixed rod 301.

[0130] In one embodiment, the second slider 302 includes a slider body 3021, with recessed rails 3022 on both sides of the slider body 3021. A first limiting block 3023 is provided at one end of the recessed rail 3022, and a second limiting block 3031 is provided at the rear end of the second slide rail 303. The second limiting block 3031 is disposed in the recessed rail 3022. When the second slider 302 slides to the rear end of the second slide rail 303, the first limiting block 3023 abuts against the second limiting block 3031.

[0131] In this embodiment, when the smoke guide plate 2 needs to be opened, such as Figures 12 to 14 As shown, the push rod of the first push rod motor 304 extends continuously, driving the second slide rail 303 to rotate slowly. Simultaneously, the second slide rail 303 slides relative to the second slider 302. Initially, the second slider 302 is fully contained within the second slide rail 303. At this point, the smoke guide plate 2 can rotate and extend outwards a certain distance. When the second slider 302 slides to the rear end of the second slide rail 303, the first limiting block 3023 abuts against the second limiting block 3031. At this point, the second slide rail 303 cannot extend further, and the second limiting block 3031 prevents the second slider 302 from detaching from the second slide rail 303. Then, the push rod of the first push rod motor 304 continues to extend, driving the second slide rail 303 and the second slider 302 to rotate together until the smoke guide plate 2 is fully open. Recessed rails 3022 are provided on both sides of the slider body 3021, allowing the second slider 302 to extend beyond the second slide rail 303. Therefore, the bottom of the smoke guide plate 2 can be further away from the smoke collection chamber 1, thus collecting a larger area of ​​oil fumes.

[0132] In one embodiment, the second slider 302 further includes protrusions 3024 disposed on both sides of the slider body 3021, and the second slide rail 303 is provided with a slide groove 3032 adapted to the protrusions 3024.

[0133] In this embodiment, by providing protrusions 3024 on both sides of the slider body 3021 and providing a groove 3032 in the second slide rail 303, the protrusions 3024 are slidably disposed in the groove 3032, which can further improve the cooperation stability between the second slider 302 and the second slide rail 303.

[0134] Specifically in one embodiment, such as Figure 15 As shown, the upper and lower surfaces of the protrusion 3024 are flat, while the side is curved.

[0135] In one embodiment not shown in the figure, the bump 3024 may be a rectangular block.

[0136] In one embodiment, an assembly space 3033 is provided at one end of the second slide rail 303 away from the second limiting block 3031, and the second slider 302 is adapted to be assembled into the second slide rail 303 through the assembly space 3033.

[0137] In this embodiment, the assembly space 3033 facilitates the installation of the second slider 302 into the second slide rail 303. Since the second slider 302 is hinged to the fixing rod 301 after assembly, the second slider 302 will not fall off the assembly space 3033.

[0138] Specifically, such as Figures 15 to 17 As shown, the assembly space 3033 is a rectangular groove.

[0139] In one embodiment, the protrusion 3024 is hinged to one end of the fixing rod 301.

[0140] In this embodiment, the protrusion 3024 is hinged to one end of the fixed rod 301. Since the protrusion 3024 protrudes from the slider body 3021 and is slidably disposed in the slide groove 3032, it is not easy to cause interference during the movement.

[0141] Specifically, the protrusion 3024 is a hollow structure with a hinge hole, which is hinged to the first fixed shaft at the top of the fixed rod 301.

[0142] In one embodiment, the drive unit 7 is inclined upward relative to the second slide rail 303.

[0143] In this embodiment, by tilting the drive unit 7 upward, the smoke guide plate 2 can have a certain tilt angle when opened, which can gather a larger range of oil fumes.

[0144] In one specific embodiment, when the second slide rail 303 is in a horizontal state, the drive unit 7 tilts upward.

[0145] In one embodiment, when the second slide rail 303 is in a horizontal state, the smoke guide plate 2 is fully opened, and the opening angle of the smoke guide plate 2 is equal to the tilt angle of the drive unit 7.

[0146] Specifically, when the second slide rail 303 is in a horizontal state, the smoke guide plate 2 is fully opened. At this time, the extension stroke of the first push rod reaches its maximum. Since the drive unit 7 is tilted, the smoke guide plate 2 is perpendicular to the drive unit 7. Therefore, the opening angle of the smoke guide plate 2 is equal to the tilt angle of the drive unit 7, which can prevent the first push component 3 from moving to the dead point due to the upward tilt of the second slide rail 303.

[0147] In one embodiment, such as Figure 12 As shown, a support structure 3011 is provided on the fixed rod 301. When the smoke guide plate 2 is closed, the support structure 3011 supports the second slide rail 303.

[0148] In this embodiment, by providing a support structure 3011 on the fixed rod 301, when the smoke guide plate 2 is closed, the support structure 3011 supports the second slide rail 303, preventing the second slide rail 303 from sliding relative to the second slider 302 and causing the smoke guide plate 2 to open.

[0149] In one embodiment, such as Figure 6 and Figure 7As shown, the second pushing assembly 4 includes a slide rod 402, a second push rod motor 401, a rotary motor 405, a push rod 403, and a connecting rod 404. The second push rod motor 401 includes a housing 4011 and a movable end 4012, which is hinged to the middle of the slide rod 402. The output shaft 4051 of the rotary motor 405 is fixedly connected to the movable end 4012. The slide rod 402 is fixedly connected to a fixed end, which is located at the middle of the slide rod 402. Two push rods 403 are symmetrically arranged, slidably connected to the slide rod 402, and their ends are connected to the ends of the fixed rod 301. Two connecting rods 404 are symmetrically arranged, with one end hinged to the housing 4011 and the other end hinged to the push rod 403.

[0150] In this embodiment, when the smoke collection chamber 1 is in its initial position, the push rod of the second push rod motor 401 extends. When the oil fume concentration is high and the oil fume concentration on the left and right sides are equal, such as... Figure 11 As shown, the rotating motor 405 is not working, the push rod of the second push rod motor 401 retracts, the movable end 4012 is fixed by the rotating motor 405 and cannot move, the housing 4011 retracts relative to the push rod, driving the connecting rod 404 to rotate, the connecting rod 404 drives the push rod 403 to slide outward, since the end of the push rod 403 is connected to the end of the fixed rod 301, thus driving the fixed rod 301 and the two first push components 3 to move, driving the smoke collection chamber 1 to move to the open position. When the oil fume concentration on the left is greater than the oil fume concentration on the right, such as Figure 10 As shown, the rotating motor 405 drives the first push rod motor 304 to rotate to the left, the push rod of the second push rod motor 401 retracts, and the housing 4011 drives the connecting rod 404 on the left to rotate, which in turn drives the push rod 403 on the left to extend, causing the smoke collection chamber 1 on the left to move to the open position. When the oil fume concentration on the right is greater than that on the left, as... Figure 9 As shown, the rotating motor 405 drives the first push rod motor 304 to rotate to the right, the push rod of the second push rod motor 401 retracts, the housing 4011 drives the connecting rod 404 on the right to rotate, which in turn drives the push rod 403 on the right to extend, so that the smoke collection chamber 1 on the right moves to the right to the open position.

[0151] In one specific embodiment, the output shaft 4051 of the rotary motor 405 is keyed to the movable end 4012 of the second push rod motor 401.

[0152] In one embodiment not shown in the figure, the second actuation component 4 may include two independently configured cylinders, each cylinder being connected to a first actuation component 3.

[0153] Specifically in one embodiment, such as Figure 6 As shown, the end of the push rod 403 is provided with a second connecting part 4031, which is connected to the lower end of the fixed rod 301.

[0154] In one embodiment, a third limiting block 4021 is provided in the middle of the slide bar 402. When the smoke collection chamber 1 is in the initial position, the push rod 403 abuts against the third limiting block 4021, and the movable end 4012 is hinged to the third limiting block 4021.

[0155] In this embodiment, the third limiting block 4021 can limit the sliding stroke of the push rod 403, while facilitating connection with the movable end 4012 and fixing of the rotating motor 405.

[0156] Specifically in one embodiment, such as Figure 6 As shown, the push rod 403 is provided with a mounting part 4032 for hinged connection with the connecting rod 404. When the smoke collection chamber 1 is in the initial position, the mounting part 4032 abuts against the third limiting block 4021.

[0157] In one embodiment, a third slide rail 103 extending in the vertical direction is provided on the outer side of the smoke collection chamber 1. A strip hole 1031 for the drive unit 7 to pass through is provided in the middle of the third slide rail 103. The two sides of the strip hole 1031 are slide rails 1032. The smoke collection assembly also includes a second appearance component 8. The second appearance component 8 is connected to the drive unit 7 and slides in cooperation with the slide rail 1032. When the smoke guide plate 2 is opened, the second appearance component 8 blocks the strip hole 1031.

[0158] In this embodiment, the strip hole 1031 is provided so that the drive part 7 can pass through and rotate. By connecting the drive part 7 to the second appearance part 8, when the smoke guide plate 2 is opened, the drive part 7 moves to the upper end of the strip hole 1031. At this time, the second appearance part 8 covers the strip hole 1031, and the appearance is neat and beautiful.

[0159] It should be noted that when the drive unit 7 moves to the lower end of the strip hole 1031, the smoke guide plate 2 is not opened and the smoke collection chamber 1 is not moved to the open position, so it does not affect the overall aesthetics.

[0160] In one embodiment, such as Figure 25 As shown, the second exterior component 8 has a through-hole 801, the length of which is greater than the length of the drive part 7, and the drive part 7 passes through the through-hole 801.

[0161] In this embodiment, since the length of the opening 801 is greater than the length of the drive unit 7, it is convenient for the smoke guide plate 2 to rotate relative to the second appearance part 8. In addition, the opening 801 facilitates the connection between the drive unit 7 and the second appearance part 8.

[0162] In one embodiment, such as Figure 24 As shown, the top of the third slide rail 103 is provided with a first limiting edge 1033. When the smoke guide plate 2 is opened, the second appearance piece 8 abuts against the first limiting edge 1033.

[0163] In this embodiment, the first limiting edge 1033 can limit the opening position of the smoke guide plate 2.

[0164] In one embodiment, the smoke collection chamber 1 is provided with a fourth limiting block 104. When the smoke collection chamber 1 is in the open position, the fourth limiting block 104 abuts against the casing 9 of the range hood.

[0165] In this embodiment, the fourth limiting block 104 can limit the movement of the smoke collection chamber 1 to ensure that the smoke collection chamber 1 can collect smoke normally.

[0166] According to an embodiment of the present invention, in a second aspect, a range hood is also provided, comprising: the smoke collection assembly described above.

[0167] According to an embodiment of the present invention, in a third aspect, a control method for a range hood is provided, applied to the aforementioned range hood. For example... Figure 28 As shown, the control methods include:

[0168] Obtain the concentration of cooking fumes;

[0169] Determine if the concentration of cooking fumes exceeds the preset value.

[0170] If so, switch the smoke collection component to the second state;

[0171] If not, switch the smoke collection assembly to the first state.

[0172] In this embodiment, when the oil fume concentration detected by the detection device 10 is less than or equal to a preset value, the smoke collection assembly is switched to the first working state. The two first pushing components 3 respectively push the smoke guide plate 2 to open, so that the second air inlet 101 on the smoke collection chamber 1 is exposed. At this time, the first air inlet 601 on the left is blocked or at least partially overlaps with the second air inlet 101 on the left side of the smoke collection chamber 1, and the first air inlet 601 on the right is blocked or at least partially overlaps with the second air inlet 101 on the right side of the smoke collection chamber 1. Oil fumes can enter the smoke collection chamber 1 through the second air inlet 101. When the oil fume concentration detected by the detection device 10 is greater than the preset value, the smoke collection assembly is switched to the second working state, so that the second pushing assembly 4 pushes at least one of the first pushing assemblies 3 to move outward. Since the driving part of the first pushing assembly 3 passes through the smoke collection cavity 1 and is connected to the smoke guide plate 2, the first pushing assembly 3 will drive the smoke collection cavity 1 on that side to move together when it moves outward. When the smoke collection cavity 1 on that side moves to the open position, the first air inlet 601 and the second air inlet 101 on that side are exposed, which increases the negative pressure air intake range in the left and right directions, thereby enhancing the smoke extraction effect.

[0173] In one embodiment, switching the smoke collection assembly to the second state includes:

[0174] If the oil fume concentration on the left side is greater than that on the right side, the second pushing component 4 will push the smoke collection chamber 1 on the left side to move to the open position.

[0175] If the oil fume concentration on the left side is less than that on the right side, the second pushing component 4 pushes the smoke collection chamber 1 on the right side to move to the open position.

[0176] If the oil fume concentration on the left side is equal to the oil fume concentration on the right side, the second pushing component 4 will simultaneously push both smoke collection chambers 1 to the open position.

[0177] In this embodiment, the position of the smoke collection chamber 1 can be adjusted according to the relationship between the smoke concentration on the left and the smoke concentration on the right, which can further improve the smoke extraction effect.

[0178] In one specific embodiment, when the oil fume concentration detected by the detection device 10 is greater than a preset value and the oil fume concentrations on the left and right sides are equal, the rotary motor 405 does not operate, the push rod of the second push rod motor 401 retracts, the movable end 4012 is fixed by the rotary motor 405 and cannot move, the housing 4011 retracts relative to the push rod, driving the connecting rod 404 to rotate, and the connecting rod 404 drives the push rod 403 to slide outward. Since the end of the push rod 403 is connected to the end of the fixed rod 301, it drives the fixed rod 301 and the two first push components 3 to move, driving the smoke collection chamber 1 to move to the open position. When the oil fume concentration on the left side is greater than the oil fume concentration on the right side, the rotary motor 405 drives the first push rod motor 304 to rotate to the left, the push rod of the second push rod motor 401 retracts, the housing 4011 drives the connecting rod 404 on the left side to rotate, thereby driving the push rod 403 on the left side to extend, causing the smoke collection chamber 1 on the left side to move to the open position. When the oil fume concentration on the right side is greater than that on the left side, the rotating motor 405 drives the first push rod motor 304 to rotate to the right, the push rod of the second push rod motor 401 retracts, the housing 4011 drives the connecting rod 404 on the right side to rotate, which in turn drives the push rod 403 on the right side to extend, so that the smoke collection chamber 1 on the right side moves to the right to the open position.

[0179] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A smoke collection assembly, characterized in that, include: The fastener is provided with a first air inlet (601) and a detection device (10), wherein the detection device (10) is used to detect the concentration of oil fumes; Two smoke collection chambers (1) are provided, which are slidably connected to the fixing member in the left and right directions respectively. Each smoke collection chamber (1) is provided with a second air inlet (101). Each smoke collection chamber (1) has an initial position in which at least part of the corresponding first air inlet (601) is blocked, or at least part of the second air inlet (101) coincides with the corresponding first air inlet (601), and an open position in which the corresponding first air inlet (601) is fully exposed. A smoke guide plate (2) is provided in a one-to-one correspondence with the smoke collection chamber (1), and the smoke guide plate (2) is provided outside the smoke collection chamber (1) in an openable and closable manner; The driving device includes a first pushing component (3) that is connected to the smoke guide plate (2) in a one-to-one correspondence, and a second pushing component (4) that is connected to the first pushing component (3) and can push the first pushing component (3) to move in the left and right direction. The first pushing component (3) has a driving part that passes through the smoke collection chamber (1) and is connected to the smoke guide plate (2). The smoke collection assembly has a first working state and a second working state. In the first working state, the smoke guide plate (2) is open and both smoke collection chambers (1) are located in the initial position. In the second working state, the smoke guide plate (2) is open and at least one smoke collection chamber (1) is located in the open position. A third slide rail (103) extending in the vertical direction is provided on the outside of the smoke collection chamber (1). A strip hole (1031) for the drive unit (7) to pass through is provided in the middle of the third slide rail (103). The two sides of the strip hole (1031) are slide rails (1032). The smoke collection assembly also includes a second appearance part (8). The second appearance part (8) is connected to the drive unit (7) and slides with the slide rails (1032). When the smoke guide plate (2) is open, the second appearance part (8) blocks the strip hole (1031).

2. The smoke collection assembly according to claim 1, characterized in that, The first air inlet (601) includes a plurality of first air inlet grilles extending vertically, and the second air inlet (101) includes a plurality of second air inlet grilles arranged at an incline. When the smoke collection chamber (1) is in the initial position, the second air inlet grilles overlap with at least a portion of the corresponding first air inlet grilles.

3. The smoke collection assembly according to claim 1, characterized in that, The fixing component includes a first appearance component (5) and a hidden component (6) located on both sides of the first appearance component (5). The hidden component (6) is provided with the first air inlet (601). The first appearance component (5) is provided with the detection device (10). When the smoke guide plate (2) is closed, the first appearance component (5) is located between the two smoke guide plates (2).

4. The smoke collection assembly according to claim 3, characterized in that, The concealed component (6) is connected to the smoke collection chamber (1) through a first sliding assembly. The first sliding assembly includes a first sliding component located at the upper and lower ends of the concealed component (6) and a first sliding engagement component located on the smoke collection chamber (1). The first sliding component and the first sliding engagement component are in sliding engagement.

5. The smoke collection assembly according to claim 4, characterized in that, The first sliding member is the first slide rail (602), and the first sliding mating member is the first slider (102).

6. The smoke collection assembly according to any one of claims 1 to 5, characterized in that, The first pushing component (3) includes: The fixed rod (301) is connected to the second push assembly (4); The second sliding assembly includes a second sliding member and a second sliding engagement member that are slidably engaged. The second sliding member is hinged to one end of the fixed rod (301), and one end of the second sliding engagement member is provided with the driving part (7). The first push rod motor (304) is hinged at one end to the fixed rod (301) and at the other end to the second sliding engagement member.

7. The smoke collection assembly according to claim 6, characterized in that, The second sliding member is the second slider (302), and the second sliding mating member is the second slide rail (303).

8. The smoke collection assembly according to claim 7, characterized in that, The second slider (302) includes a slider body (3021), and concave rails (3022) are respectively provided on both sides of the slider body (3021). A first limiting block (3023) is provided at one end of the concave rail (3022), and a second limiting block (3031) is provided at the rear end of the second slide rail (303). The second limiting block (3031) is located in the concave rail (3022). When the second slider (302) slides to the rear end of the second slide rail (303), the first limiting block (3023) abuts against the second limiting block (3031).

9. The smoke collection assembly according to claim 8, characterized in that, The second slider (302) further includes protrusions (3024) on both sides of the slider body (3021), and the second slide rail (303) is provided with a slide groove (3032) that is adapted to the protrusions (3024).

10. The smoke collection assembly according to claim 9, characterized in that, The protrusion (3024) is hinged to one end of the fixing rod (301).

11. The smoke collection assembly according to claim 8, characterized in that, The second slide rail (303) has an assembly space (3033) at one end away from the second limiting block (3031), and the second slider (302) is adapted to be assembled into the second slide rail (303) through the assembly space (3033).

12. The smoke collection assembly according to any one of claims 7 to 11, characterized in that, The drive unit (7) is inclined upward relative to the second slide rail (303).

13. The smoke collection assembly according to claim 12, characterized in that, When the second slide rail (303) is in a horizontal state, the smoke guide plate (2) is fully opened, and the opening angle of the smoke guide plate (2) is equal to the tilt angle of the drive unit (7).

14. The smoke collection assembly according to any one of claims 7 to 11, characterized in that, The fixed rod (301) is provided with a support structure (3011). When the smoke guide plate (2) is closed, the support structure (3011) supports the second slide rail (303).

15. The smoke collection assembly according to any one of claims 7 to 11, characterized in that, The second actuation component (4) includes: Slide bar (402); The second push rod motor (401) includes a housing (4011) and a movable end (4012), the movable end (4012) being hinged to the middle of the slide rod (402); A rotating motor (405) has its output shaft (4051) fixedly connected to the movable end (4012); Two push rods (403) are symmetrically provided. The push rods (403) are slidably connected to the slide rods (402). The end of the push rods (403) is connected to the end of the fixed rods (301). Two connecting rods (404) are symmetrically provided. One end of the connecting rod (404) is hinged to the housing (4011), and the other end is hinged to the push rod (403).

16. The smoke collection assembly according to claim 15, characterized in that, The middle part of the slide bar (402) is provided with a third limiting block (4021). When the smoke collection chamber (1) is in the initial position, the push rod (403) abuts against the third limiting block (4021), and the movable end (4012) is hinged to the third limiting block (4021).

17. The smoke collection assembly according to any one of claims 1 to 5, 7 to 11, characterized in that, The second exterior component (8) is provided with a through opening (801), the length of which is greater than the length of the driving part (7), and the driving part (7) passes through the through opening (801). And / or, the top of the third slide rail (103) is provided with a first limiting edge (1033), and when the smoke guide plate (2) is opened, the second appearance piece (8) abuts against the first limiting edge (1033).

18. The smoke collection assembly according to any one of claims 1 to 5, 7 to 11, characterized in that, The smoke collection chamber (1) is provided with a fourth limiting block (104). When the smoke collection chamber (1) is in the open position, the fourth limiting block (104) abuts against the casing (9) of the range hood.

19. A range hood, characterized in that, include: The smoke collection assembly according to any one of claims 1 to 18.

20. A control method for a range hood, characterized in that, The control method, applied to the range hood of claim 19, comprises: Obtain the concentration of cooking fumes; Determine if the concentration of cooking fumes exceeds the preset value. If so, switch the smoke collection component to the second state; If not, switch the smoke collection assembly to the first state.

21. The control method for a range hood according to claim 20, characterized in that, The step of switching the smoke collection assembly to the second state includes: If the oil fume concentration on the left side is greater than that on the right side, the second pushing component (4) will push the smoke collection chamber (1) on the left side to move to the open position; If the oil fume concentration on the left side is less than that on the right side, the second pushing component (4) pushes the smoke collection chamber (1) on the right side to move to the open position; If the oil fume concentration on the left side is equal to the oil fume concentration on the right side, the second pushing component (4) will simultaneously push both smoke collection chambers (1) to the open position.

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