Control method of range hood

Abstract

The invention discloses a control method of a range hood, the range hood is provided with an induced draft fan, a first smoke collecting cavity channel and a smoke baffle, the first smoke collecting cavity channel is provided with a first smoke inlet in the horizontal direction, and the smoke baffle can move horizontally to adjust the horizontal smoke gathering width of the first smoke inlet. The smoke baffle has bendability and rebound resilience and can be bent downwards so as to adjust the vertical smoke gathering height of the smoke baffle relative to the first smoke inlet; the control method comprises the steps that S1, an induced draft fan is started according to judgment, so that a range hood absorbs cooking fume generated by cooking; and S2, detecting the oil smoke concentration D at the first smoke inlet, and controlling the horizontal movement distance and the downward bending degree of the smoke baffle according to the oil smoke concentration D. The range hood has the beneficial effects that the smoke gathering effect of the smoke barrier can be improved, and the smoke suction efficiency of the range hood is improved.

Description

Technical Field

[0001] The invention relates to a control method for a range hood, and belongs to the technical field of kitchen appliances. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Usually, range hoods include top suction type and side suction type. Top suction range hoods use the principle of rising hot air to absorb and exhaust the naturally rising oil smoke generated during cooking. In addition, they are more and more widely used due to their advantages such as being neat, light and small in space.

[0003] A smoke baffle is generally provided in a ceiling-type range hood, which can guide the oil smoke to flow into the range hood and improve the efficiency of collecting the oil smoke. However, the smoke baffle in the prior art can generally only collect smoke in one direction, horizontally or vertically, and the smoke collection effect is poor. 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, thereby improving the smoke collecting effect of the smoke baffle and improving the smoke extraction efficiency of the range hood.

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

[0006] A control method for a range hood, the range hood being provided with an induced draft fan, a first smoke collecting chamber, and a smoke baffle, the first smoke collecting chamber having a first smoke inlet facing horizontally, the smoke baffle being horizontally movable to adjust a horizontal smoke collecting width relative to the first smoke inlet, and having bendability and resilience to bend downward to adjust a vertical smoke collecting height of the smoke baffle relative to the first smoke inlet;

[0007] The steps of the control method include:

[0008] Step S1: starting the induced draft fan according to the judgment, so that the range hood absorbs the fumes generated by cooking;

[0009] Step S2: Detecting the oil smoke concentration D at the first smoke inlet, and controlling the horizontal movement distance and downward bending degree of the smoke baffle according to the oil smoke concentration D.

[0010] As a further improvement of the present invention, a concentration sensor is provided at the first smoke inlet for detecting the oil smoke concentration D at the first smoke inlet.

[0011] As a further improvement of the present invention, step S1: detecting the temperature T of the stove, when the temperature T ≥ the set temperature T 1 When the induced draft fan is started.

[0012] As a further improvement of the present invention, the range hood is provided with an infrared detector for detecting the temperature T of the stove.

[0013] As a further improvement of the present invention, step S2: the fume concentration at the first fume inlet is set to a plurality of set fume concentrations D n , n≥2, oil fume concentration D n As n increases, the value of oil fume concentration D increases. n Match the horizontal movement distance L of the smoke baffle n And the downward bending degree H n ; When the oil fume concentration D≥ the set oil fume concentration D n When the smoke baffle is adjusted to the horizontal moving distance L n And the downward bending degree H n。

[0014] As a further improvement of the present invention, in step S2: setting the oil fume concentration D n The change of increases with the increase of n; the horizontal movement distance L n The change of increases with the increase of n until it increases to the maximum distance W that the smoke baffle can move horizontally. max ; Downward bending degree H n The horizontal movement distance L n The maximum horizontal movement distance W of the smoke baffle is reached max It was zero before, and the maximum distance W that the smoke baffle can move horizontally is reached. max Then it increases as n increases.

[0015] As a further improvement of the present invention, the induced draft fan is provided with multiple set power W m , m≥2, n≥m; set power W m As n increases, it increases, and each set power W m Match a specific fume concentration D n , when the oil fume concentration D≥ the specific set oil fume concentration D n When the induced draft fan is controlled to adjust to the set power W m .

[0016] As a further improvement of the present invention, the range hood is provided with a smoke collecting assembly, two first smoke collecting cavities are provided in the smoke collecting assembly, and the first smoke inlets of the two first smoke collecting cavities are respectively provided on two opposite sides of the smoke collecting assembly.

[0017] As a further improvement of the present invention, the first smoke inlets of the two first smoke collecting cavities detect the fume concentration D separately and individually, and according to the fume concentration D, the horizontal movement distance and downward bending degree of the corresponding smoke baffle are controlled.

[0018] As a further improvement of the present invention, the smoke collecting assembly is further provided with a second smoke collecting chamber, the second smoke collecting chamber having a second smoke inlet opening facing downward, the second smoke collecting chamber being located between the two first smoke collecting chambers, and the first smoke inlets of the two first smoke collecting chambers are oriented in opposite directions.

[0019] As a further improvement of the present invention, the induced draft fan is first started based on the judgment, so that the oil smoke enters the second smoke collecting chamber from the second smoke inlet at the bottom; if there is no oil smoke at the first smoke inlets on both sides, the corresponding smoke baffles are not started and controlled; if there is oil smoke at the first smoke inlets on both sides, the oil smoke concentration D is detected separately, and the horizontal movement distance and downward bending degree of the corresponding smoke baffles are controlled according to the oil smoke concentration D.

[0020] Beneficial effects of the present invention:

[0021] Corresponding to different oil fume concentrations D, the smoke shield can be controlled to adjust to different horizontal movement distances and downward bending degrees. On the one hand, the smoke shield has a strong smoke collection effect, which helps to improve the smoke extraction efficiency of the range hood and reduce the escape and diffusion of oil fume. On the other hand, by controlling the smoke shield, it can match different oil fume concentrations and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0023] Figure 1 It is a structural schematic diagram of the range hood of Example 1;

[0024] Figure 2 This is a schematic diagram of the internal structure of the range hood of Example 1;

[0025] Figure 3 This is a diagram of the internal structure of the smoke collecting assembly of Example 1;

[0026] Figure 4 for Figure 3 The structural diagram of part A in the figure;

[0027] Figure 5 A structural diagram of the smoke collecting assembly of Example 1 from one viewing angle;

[0028] Figure 6 This is a structural diagram of the connection between the first driving mechanism and the smoke shield in Example 1.

[0029] Figure 7 This is a diagram of the internal structure of the smoke collecting assembly of Example 1; DETAILED DESCRIPTION

[0030] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0031] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0032] Embodiment 1:

[0033] A range hood, referring to Figure 1-6 , including a smoke collecting assembly and a fan assembly 7, the fan assembly 7 includes a fan housing 71 connected to the top of the smoke collecting assembly and an induced draft fan 72 arranged in the fan housing 71.

[0034] The smoke collecting assembly includes a smoke collecting shell 1, a first smoke collecting chamber 11, a second smoke collecting chamber 12, a smoke baffle 2, a first driving mechanism 3 and a second driving mechanism 4, wherein the first smoke collecting chamber 11 is located in the smoke collecting shell 1, and has a first smoke inlet 11a and a first smoke outlet 11b, wherein the first smoke inlet 11a is formed on the side of the smoke collecting shell 1, and the first smoke outlet 11b is formed on the top of the smoke collecting shell 1, and the oil smoke generated during cooking can enter the first smoke collecting chamber 11 from the first smoke inlet 11a and flow out from the first smoke outlet 11b. Two first smoke collecting chambers 11 are provided, and the first smoke inlets 11a of the two first smoke collecting chambers 11 are respectively formed on two opposite sides of the smoke collecting shell 1, and the smoke collecting assembly can collect smoke on both sides. On the one hand, the smoking range of the smoke collecting assembly can cover a wider cooking area, thereby reducing the escape of oil smoke, and on the other hand, it can improve the coordination of the appearance of the smoke collecting assembly and improve the aesthetics.

[0035] The second smoke collecting chamber 12 is located between the two first smoke collecting chambers 11, and the second smoke collecting chamber 12 has a second smoke inlet 12a formed at the bottom of the smoke collecting shell 1, and a second smoke outlet 12b formed at the top of the smoke collecting shell 1. The oil smoke generated during cooking can flow into the second smoke collecting chamber 12 from the second smoke inlet 12a located at the bottom of the smoke collecting shell 1, and flow out from the second smoke outlet 12b.

[0036] In this embodiment, the fumes generated by cooking can not only be absorbed by the second smoke inlet 12a located at the bottom of the smoke collecting shell 1, but also can be absorbed by the first smoke inlet 11a located on both sides of the smoke collecting shell 1, so that the smoke collecting assembly has a larger smoking range and can more effectively capture the fumes generated from the cooking area, thereby reducing the spread of fumes affecting kitchen hygiene and human health.

[0037] In the present embodiment, the smoke baffle 2 is slidably arranged inside the smoke collecting shell 1 and is located above the first smoke collecting chamber 11. The first driving mechanism 3 is used to drive the smoke baffle 2 to slide bidirectionally in the horizontal direction. Driven by the first driving mechanism 3, when the smoke baffle 2 slides outward, the smoke baffle 2 can effectively block the oil smoke in the horizontal width direction of the first smoke inlet 11a, thereby forcing the oil smoke to gather toward the first smoke inlet 11a, thereby increasing the smoke gathering width range, and the larger the width of the smoke baffle 2 sliding out in the horizontal direction relative to the first smoke inlet 11a, the stronger the smoke gathering effect.

[0038] In this embodiment, the second driving mechanism 4 is used to drive the portion of the smoke baffle 2 outside the first smoke collecting chamber to bend downward. When the portion of the smoke baffle 2 outside the first smoke collecting chamber bends downward, the bent portion can effectively block the escape of oil smoke in the vertical direction, forcing the oil smoke to gather toward the first smoke inlet 11a, thereby increasing the vertical smoke collecting height range of the first smoke inlet 11a.

[0039] It should be noted that when the smoke collecting assembly in this embodiment is Figure 2 When placed in the middle position, the horizontal smoke-collecting width refers to the smoke-collecting range of the first smoke inlet 11a in the left-right direction, and the vertical smoke-collecting height refers to the smoke-collecting range of the first smoke inlet 11a in the up-down direction.

[0040] In addition, it should be noted that the smoke shield 2 in this embodiment has bendability and resilience, and can bend and deform when subjected to external force, and can return to its original state after the external force is removed.

[0041] In this embodiment, the first driving mechanism 3 controls the smoke baffle 2 to slide bidirectionally in the horizontal direction to adjust the horizontal smoke collecting width of the smoke baffle 2 for the first smoke inlet 11a, and because the smoke baffle 2 has flexibility and resilience, the second driving mechanism 4 controls the smoke baffle 2 to bend downward outside the first smoke collecting chamber 11 to adjust the vertical smoke collecting height of the smoke baffle 2 for the first smoke inlet 11a. On the one hand, the smoke collecting range of the smoke collecting assembly can be increased, thereby improving the smoking efficiency of the smoke collecting assembly and reducing the escape of oil smoke. On the other hand, the smoke baffle has a simple structure and occupies a small space, which makes the appearance of the smoke collecting assembly more simple and elegant, thereby helping to improve the overall aesthetics of the kitchen.

[0042] In the present embodiment, a slot 13 extending in a horizontal direction is provided in the smoke collecting shell 1 above the first smoke collecting chamber 11, and a smoke baffle 2 is slidably embedded in the slot 13. The smoke baffle 2 can be completely hidden in the smoke collecting shell 1, so that the appearance of the smoke collecting shell 1 is more concise, and the occupation of the kitchen space by the smoke collecting component is reduced, which helps to improve the commercial value of the smoke collecting component.

[0043] In this embodiment, the slot 13 is set from the outside to the inside from one side of the smoke collecting housing 1, and has a first opening 13a corresponding to the first smoke inlet 11a and a second opening 13b corresponding to the first smoke outlet 11b, that is, the smoke baffle 2 can pass through the second opening 13b under the drive of the first driving mechanism 3 to block the first smoke outlet 11b, thereby preventing the oil generated in the range hood from dripping into the first smoke collecting cavity 11, and further preventing the oil from dripping from the first smoke inlet 11a to contaminate the cooking area. In addition, since the oil generated in the range hood will drip onto the top surface of the smoke baffle 2 after the smoke baffle 2 blocks the first smoke outlet 11b, in order to prevent the oil on the top surface of the smoke baffle 2 from contaminating the slot 13, an oil suction component 6 is provided at the second opening 13b of the slot 13, and the oil suction component 6 is used to absorb the oil on the top surface of the smoke baffle 2 when it slides.

[0044] In this embodiment, the smoke baffle 2 is controlled by the first driving mechanism 3 to slide in both directions in the horizontal direction. When the smoke collecting assembly is in a non-working state, the smoke baffle 2 is controlled to slide inward to cover the first smoke outlet 11b, thereby preventing oil stains from dripping from the first smoke collecting chamber 11 to the cooking area and maintaining the cleanliness of the cooking area; when the smoke collecting assembly is in a working state, the smoke baffle 2 is controlled to slide outward to adjust the horizontal smoke collecting width for the first smoke inlet 11a, thereby increasing the smoke collecting range of the first smoke inlet 11a and improving the smoking efficiency.

[0045] In this embodiment, the oil suction assembly 6 is detachably connected to the second opening 13b of the slot 13. When the oil suction assembly 6 absorbs enough oil, the oil suction assembly 6 can be removed from the smoke collecting housing 1, so that the oil suction assembly 6 can always have a good oil suction effect by cleaning or replacing the oil suction assembly 6. At the same time, the oil suction assembly 6 is arranged at the upper edge of the second opening 13b of the slot 13, and the oil suction assembly 6 can cover the width of the smoke baffle 2, ensuring that the oil suction assembly 6 can fully absorb the oil on the top surface of the smoke baffle 2.

[0046] The oil suction assembly 6 includes a rotating rod 61 and an oil suction cylinder 62 sleeved on the rotating rod 61, the rotating rod 61 is rotatably connected to the upper edge of the second opening 13b of the slot 13, the oil suction cylinder 62 and the top surface of the smoke baffle 2 are in contact, that is, when the smoke baffle 2 slides, the oil suction cylinder 62 can be driven to roll under the action of friction, and the oil suction cylinder 62 can contact the top surface of the smoke baffle 2 in a large area and quickly when rolling, and the oil suction assembly 6 has high oil suction efficiency. The oil suction cylinder 62 here can be made of materials that can absorb oil stains, such as sponge and silica gel.

[0047] In this embodiment, the first driving mechanism 3 includes a driver 31 disposed on the smoke collecting housing 1, a rotating shaft 32 driven by the driver 31, and a transmission member 33 connected to the rotating shaft 32. The bottom of the smoke shield 2 has a matching structure 21 extending along its sliding direction, and the transmission member 33 is engaged with the matching structure 21. Specifically, the driver 31 has a plurality of plug rods arranged at intervals along the circumferential direction, and the matching structure 21 includes a plurality of plug holes arranged at intervals along the sliding direction of the smoke shield 2. The plug rods are plugged and matched with the corresponding plug holes. When working, the rotating plug rods drive the smoke shield 2 to move.

[0048] In this embodiment, the second driving mechanism 4 includes a telescopic driving rod, one end of which is rotatably connected to the smoke collecting housing 1, and the other end of which is rotatably connected to the front end top of the smoke baffle 2. The telescopic driving rod is electrically driven. In addition, the two ends of the telescopic driving rod can be connected to the smoke collecting housing 1 and the smoke baffle 2 respectively through a pin shaft and a mounting seat.

[0049] In this embodiment, a groove portion 15 is formed on the side of the smoke collecting shell 1, which is recessed inward and passes through the bottom of the smoke collecting shell 1. The first smoke inlet 11a is located at the bottom of the groove portion 15. The groove portion 15 has an upper smoke barrier wall 15a corresponding to the top edge of the first smoke inlet 11a, and two side smoke barrier walls 15b corresponding to the two side edges of the first smoke inlet 11a respectively. The oil smoke flowing through the side of the smoke collecting shell 1 can be gathered to the first smoke inlet 11a by the upper smoke barrier wall 15a and the side smoke barrier wall 15b, that is, when the smoke barrier plate 2 does not extend out of the slot 13, the smoke collecting shell 1 itself has a certain smoke gathering effect, which can reduce the diffusion and escape of oil smoke in the air.

[0050] In this embodiment, the air intake direction of the first smoke collecting chamber 11 gradually tilts upward from the horizontal direction, which can guide the oil smoke flowing in from the first smoke inlet 11a to flow along a smoother path, reducing the resistance encountered by the oil smoke when flowing in the first smoke collecting chamber 11, thereby increasing the flow rate of the oil smoke in the first smoke collecting chamber 11.

[0051] In this embodiment, the cross-sectional area of ​​the first smoke collecting chamber 11 gradually decreases from the first smoke inlet 11a to the first smoke outlet 11b. When the oil smoke enters the first smoke collecting chamber 11 from the first smoke inlet 11a, the flow rate of the oil smoke gradually increases, so that the oil smoke can be quickly discharged from the first smoke outlet 11b, thereby improving the smoking efficiency of the smoke collecting assembly.

[0052] In this embodiment, the cross-sectional area of ​​the second smoke collecting chamber 12 gradually decreases from the second smoke inlet 12a to the second smoke outlet 12b. When the oil smoke enters the second smoke collecting chamber 12 from the second smoke inlet 12a, the flow rate of the oil smoke gradually increases, so that the oil smoke can be quickly discharged from the second smoke outlet 12b, which helps to improve the smoking efficiency of the smoke collecting assembly.

[0053] In this embodiment, two partitions 14 are arranged in the smoke collecting shell 1, and the two partitions 14 separate the second smoke collecting chamber 12 from the two first smoke collecting chambers 11, so that the oil smoke entering the first smoke collecting chamber 11 and the second smoke collecting chamber 12 can accurately flow out from their respective smoke outlets, avoiding air flow turbulence and mutual interference in different smoke collecting chambers; at the same time, the top of the smoke collecting shell 1 has an opening, and the two partitions 14 extend to the opening, dividing the opening into the second smoke outlet 12b and the two first smoke outlets 11b, that is, the partition 14 can keep the oil smoke always effectively moving in the first smoke collecting chamber 11 or the second smoke collecting chamber 12, thereby improving the smoking efficiency.

[0054] In this embodiment, the smoke collecting assembly further includes an oil cup 5, which is arranged below the second smoke inlet 12a, that is, the oil cup 5 can collect the oil stains dripping from the second smoke outlet 12b to prevent the oil stains from dripping into the cooking area. A gap is left between the edge of the oil cup 5 and the edge of the second smoke inlet 12a to allow the oil smoke to enter the second smoke collecting cavity 12, ensuring that the oil smoke can smoothly enter the second smoke collecting cavity 12 from the second smoke outlet. In addition, the projection of the second smoke outlet 12b in the vertical direction is located within the horizontal coverage of the oil cup 5, ensuring that there is enough space on the oil cup 5 to accommodate the oil stains that may drip, preventing the oil stains from dripping into the cooking area.

[0055] The oil cup 5 includes a horizontally arranged oil collecting pan 51, a fence 52 extending upward from the edge of the oil collecting pan 51, and at least one connecting member 53. One end of the connecting member 53 is connected to the oil collecting pan 51 or the fence 52, and the other end is connected to the inner wall of the second smoke collecting chamber 12. The structure of the oil collecting pan 51 and the fence 52 ensures that the oil cup 5 can collect oil. In addition, the connecting member 53 is detachably connected to the inner wall of the second smoke collecting chamber 12, and the user can clean the oil collected in the oil cup 5 by disassembling the oil cup 5.

[0056] Embodiment 2:

[0057] A method for controlling a range hood is implemented by using the range hood in Example 1, and the steps include:

[0058] Step S1: starting the induced draft fan 72 according to the judgment, so that the range hood absorbs the fumes generated by cooking;

[0059] Step S2: Detecting the fume concentration D at the first smoke inlet 11 a, and controlling the horizontal movement distance and downward bending degree of the smoke baffle 2 according to the fume concentration D.

[0060] In this embodiment, a concentration sensor (not shown in the figure) is provided at the first smoke inlet 11 a for detecting the oil smoke concentration D at the first smoke inlet 11 a.

[0061] In this embodiment, when implementing step S1, the temperature T of the stove is first detected, and the induced draft fan 72 has a start setting temperature T 1 , when temperature T ≥ set temperature T 1 When the induced draft fan 72 is started, negative pressure can be generated at the first smoke inlet 11a, so that the oil smoke generated by cooking on the stove is sucked into the range hood.

[0062] In this embodiment, the range hood is provided with an infrared detector which is not shown in the figure. Specifically, the infrared sensor is provided at the bottom of the smoke collecting housing to detect the temperature T of the stove.

[0063] In this embodiment, when implementing step S2, the oil smoke concentration at the first smoke inlet 11a is set to a plurality of set oil smoke concentrations D n , n≥2, set the fume concentration D n As n increases, the value of oil fume concentration D increases. n Both match the horizontal movement distance L of the smoke baffle 2 n And the downward bending degree H n ; When the detected oil smoke concentration D ≥ the set oil smoke concentration D n When the smoke baffle 2 is adjusted to the horizontal moving distance L n And the downward bending degree H n .

[0064] Reference Figure 7 , where the smoke baffle 2 moves horizontally by a distance L n It refers to the horizontal distance that the smoke baffle 2 moves outward from the slot of the smoke collecting housing, that is, the smoke collecting width of the smoke baffle 2 for the first smoke inlet 11a, and the horizontal moving distance L n The larger the downward bending degree H is, the larger the smoke collecting width of the smoke baffle 2 for the first smoke inlet 11a is, the stronger the smoke collecting effect of the smoke baffle 2 is, and the larger the smoke collection range of the range hood is. n It refers to the bending distance of the smoke baffle 2 outside the first smoke collecting chamber in the horizontal direction, that is, the vertical smoke collecting height of the smoke baffle 2 relative to the first smoke inlet 11a, and the downward bending degree H n The larger the value, the greater the vertical smoke-collecting height of the smoke baffle 2 relative to the first smoke inlet 11a, the stronger the smoke-collecting effect of the smoke baffle 2, the larger the smoking range of the range hood, and the reduction of the escape and diffusion of oil smoke.

[0065] In this embodiment, corresponding to different oil fume concentrations D, the smoke baffle 2 can be controlled to adjust to different horizontal movement distances and downward bending degrees. On the one hand, the smoke baffle 2 has a stronger smoke collection effect, which helps to improve the smoke extraction efficiency of the range hood and reduce the escape and diffusion of oil fume. On the other hand, by controlling the smoke baffle 2, it can match different oil fume concentrations and has strong adaptability.

[0066] In this embodiment, when implementing step S2, the horizontal movement distance L n The change of increases with the increase of n until it increases to the maximum distance W that the smoke baffle 2 can move horizontally. max ; Downward bending degree H n The horizontal movement distance L n The maximum horizontal movement distance W of the smoke baffle 2 is reached max It was zero before, and the maximum horizontal movement distance W of the smoke baffle 2 is reached. max Then it increases with the increase of n, that is, only when the smoke baffle 2 moves horizontally to the maximum distance W max When the downward bending degree H n By controlling, the smoke collecting effect of the smoke shield 2 can be maximized, so that the smoke shield 2 can more comprehensively cover the area where oil smoke is generated, reduce the diffusion and escape of oil smoke, and keep the kitchen environment clean.

[0067] In this embodiment, the induced draft fan 72 is provided with a plurality of set powers W m , m≥2, n≥m; set power W m As n increases, it increases, and each set power W m Match a specific fume concentration D n , when the oil fume concentration D≥ the specific set oil fume concentration D n When the induced draft fan 72 is controlled to adjust to the set power W m Because n≥m, that is, the multiple set powers W of the induced draft fan 72 m Unable to fully match multiple set fume concentrations D n , so that each set power W m Anchor a specific fume concentration D n , only when the fume concentration D n Reach a specific fume concentration D n When the set power W of the induced draft fan 72 is adjusted m , so that the set power W of the induced draft fan 72 m Able to match the set oil smoke concentration D n On the one hand, it is to avoid the situation where the oil smoke cannot be effectively removed due to the power of the induced draft fan 72 being too small, and on the other hand, it is to avoid excessive power, which causes energy waste and noise pollution.

[0068] In this embodiment, the two first smoke collecting chambers 11 of the range hood execute the control method separately to avoid mutual interference. More specifically, the first smoke inlets 11a of the two first smoke collecting chambers 11 detect the smoke concentration D separately, and control the horizontal movement distance and downward bending degree of the corresponding smoke baffle 2 according to the smoke concentration D. The horizontal movement and downward bending of the smoke baffle 2 are executed according to the multi-stage matching described above.

[0069] In this embodiment, since the range hood has a second smoke collecting chamber 12, the second smoke collecting chamber 12 has a second smoke inlet 12a opening downward, and the second smoke collecting chamber 12 is located between the two first smoke collecting chambers 11, the first smoke inlets 11a of the two first smoke collecting chambers 11 are in opposite directions, that is, the second smoke collecting chamber 12 is not affected by the present control method and can always absorb the smoke generated by cooking.

[0070] Therefore, when cooking, the induced draft fan 72 is started first, so that the oil smoke enters the second smoke collecting chamber 12 from the second smoke inlet 12a at the bottom to perform oil smoke absorption. If the oil smoke can be basically absorbed through the second smoke collecting chamber 12, that is, if there is no oil smoke in the first smoke inlet 11a on both sides, the smoke baffles 2 of the two first smoke collecting chambers 11 will not be started. If all the oil smoke cannot be absorbed through the second smoke collecting chamber 12 alone, the oil smoke will escape to both sides. Even if the first smoke inlet 11a on both sides can detect the oil smoke, the oil smoke concentration D is detected separately, and the horizontal movement distance and the downward bending degree of the corresponding smoke baffle 2 are controlled according to the oil smoke concentration D.

[0071] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A method for controlling a range hood, characterized in that: The range hood is provided with an induced draft fan (72), a first smoke collecting chamber (11), and a smoke baffle (2); the first smoke collecting chamber (11) has a first smoke inlet (11a) facing horizontally; the smoke baffle (2) can be moved horizontally to adjust the horizontal smoke collecting width relative to the first smoke inlet (11a), and has bendability and resilience to bend downward to adjust the vertical smoke collecting height of the smoke baffle (2) relative to the first smoke inlet (11a); The steps of the control method include: Step S1: starting the induced draft fan (72) according to the judgment, so that the range hood absorbs the fumes generated by cooking; Step S2: detecting the oil smoke concentration D at the first smoke inlet (11a), and controlling the horizontal movement distance and downward bending degree of the smoke baffle (2) according to the oil smoke concentration D.

2. The control method of the range hood according to claim 1, characterized in that: A concentration sensor is provided at the first smoke inlet (11a) for detecting the oil smoke concentration D at the first smoke inlet (11a).

3. The control method of the range hood according to claim 1, characterized in that: Step S1: Detect the temperature T of the stove, and when the temperature T≥ the set temperature T1, start the induced draft fan (72).

4. The control method of the range hood according to claim 3, characterized in that: The range hood is provided with an infrared detector for detecting the temperature T of the stove.

5. The control method of the range hood according to claim 1, characterized in that: Step S2: The fume concentration at the first fume inlet (11a) is set to a plurality of set fume concentrations D n , n≥2, set the fume concentration D n As n increases, the value of oil fume concentration D increases. n Both match the horizontal movement distance L of the smoke baffle (2) n And the downward bending degree H n ; When the oil fume concentration D≥ the set oil fume concentration D n When the smoke baffle (2) is adjusted to a horizontal movement distance L n And the downward bending degree H n。 6. The control method of the range hood according to claim 5, characterized in that: In step S2: set the oil smoke concentration D n The change of increases with the increase of n; the horizontal movement distance L n The change of increases with the increase of n until it increases to the maximum distance W that the smoke baffle (2) can move horizontally. max ; Downward bending degree H n The horizontal movement distance L n The maximum horizontal movement distance W of the smoke baffle (2) is reached. max It was zero before, and the maximum horizontal movement distance W of the smoke baffle (2) is reached. max Then it increases as n increases.

7. The control method of the range hood according to claim 5, characterized in that: The induced draft fan (72) is provided with a plurality of setting powers W m , m≥2, n≥m; set power W m As n increases, it increases, and each set power W m Match a specific fume concentration D n , when the oil fume concentration D≥ the specific set oil fume concentration D n When the induced draft fan (72) is controlled to adjust to the set power W m .

8. The control method of the range hood according to any one of claims 1 to 7, characterized in that: The range hood is provided with a smoke collecting assembly, in which two first smoke collecting cavities (11) are arranged, and the first smoke inlets (11a) of the two first smoke collecting cavities (11) are respectively arranged on two opposite sides of the smoke collecting assembly.

9. The control method of the range hood according to claim 8, characterized in that: The first smoke inlets (11a) of the two first smoke collecting cavities (11) respectively and individually detect the oil smoke concentration D, and control the horizontal movement distance and downward bending degree of the corresponding smoke baffle (2) according to the oil smoke concentration D.

10. The control method of the range hood according to claim 8, characterized in that: The smoke collecting assembly is further provided with a second smoke collecting chamber (12), the second smoke collecting chamber (12) having a second smoke inlet (12a) opening downward, the second smoke collecting chamber (12) being located between the two first smoke collecting chambers (11), and the first smoke inlets (11a) of the two first smoke collecting chambers (11) facing in opposite directions.

11. The control method of the range hood according to claim 9, characterized in that: First, the induced draft fan (72) is started based on the judgment, so that the oil smoke enters the second smoke collecting chamber (12) from the second smoke inlet (12a) at the bottom; if there is no oil smoke at the first smoke inlet (11a) on both sides, the corresponding smoke baffle (2) is not started; if there is oil smoke at the first smoke inlet (11a) on both sides, the oil smoke concentration D is detected separately, and the horizontal movement distance and downward bending degree of the corresponding smoke baffle (2) are controlled according to the oil smoke concentration D.

Images