Range hood and control method thereof

Abstract

The embodiment of the invention discloses a range hood and a control method thereof. The range hood comprises a smoke gathering cavity, a movable baffle, a position adjusting module and an oil smoke monitoring module. A smoke inlet is formed in the smoke gathering cavity; the oil smoke monitoring module is arranged on the surface of the smoke gathering cavity and is used for acquiring the oil smoke concentration in the kitchen environment; the movable baffle and the position adjusting module are both arranged in the smoke gathering cavity, one end of the position adjusting module is connected to the movable baffle, the other end of the position adjusting module is connected to the first inner wall of the smoke gathering cavity, and the first inner wall and the movable baffle are oppositely arranged and located on the two opposite sides of smoke inlet airflow corresponding to the smoke inlet correspondingly; the position adjusting module is further electrically connected with the lampblack monitoring module and used for adjusting the position, relative to the first inner wall, of the movable baffle at least according to the lampblack concentration in the kitchen environment so as to adjust the sectional area of smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke gathering cavity. The range hood can remarkably improve the smoke suction effect and reduce the operation noise at the same time.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of household appliances, and in particular to a range hood and a control method thereof. Background Art

[0002] With the improvement of living standards, range hoods, as a commonly used kitchen appliance for purifying the kitchen environment, quickly extract and discharge the exhaust gas generated by the gas stove and the oil smoke generated during the cooking process, reducing indoor oil fume pollution, thereby purifying the kitchen air and improving the user's cooking comfort.

[0003] At present, range hoods have been designed and developed in various forms, such as ultra-thin-wall range hoods, which mainly include two structures: a chassis and a thin flat smoke collection chamber. Among them, a centrifugal fan is placed in the chassis to inhale oil smoke, and a smoke collection plate is provided on the thin flat smoke collection chamber to improve the extraction effect. However, existing range hoods usually have a smoke collection chamber of fixed size, and the size of its air inlet channel is fixed, which cannot be flexibly adjusted according to different cooking scenarios. Furthermore, when the oil smoke concentration in the kitchen environment is high, it may lead to poor smoke collection effect and easy dissipation of oil smoke. When the oil smoke concentration in the kitchen environment is low, it may cause excessive extraction effect, increase unnecessary energy consumption and noise. Summary of the Invention

[0004] The embodiment of the present invention provides a range hood and a control method thereof, so as to realize free adjustment of the position of a movable baffle, thereby improving the smoke extraction effect while reducing operating noise, thereby enhancing the user's cooking experience and comfort.

[0005] In a first aspect, an embodiment of the present invention provides a range hood, comprising a smoke collecting chamber, a movable baffle, a position adjustment module, and a smoke monitoring module;

[0006] The smoke collecting chamber is provided with a smoke inlet;

[0007] The oil fume monitoring module is arranged on the surface of the smoke collecting chamber and is used to obtain the oil fume concentration in the kitchen environment;

[0008] The movable baffle and the position adjustment module are both arranged inside the smoke collecting chamber, and one end of the position adjustment module is connected to the movable baffle, and the other end of the position adjustment module is connected to the first inner wall of the smoke collecting chamber, the first inner wall and the movable baffle are opposite to each other and are respectively located on opposite sides of the smoke inlet corresponding to the smoke inlet;

[0009] The position adjustment module is also electrically connected to the oil fume monitoring module. The position adjustment module is used to adjust the position of the movable baffle relative to the first inner wall at least according to the oil fume concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber.

[0010] Optionally, the position adjustment module includes a drive motor unit and a telescopic rod unit;

[0011] One end of the driving motor unit is connected to the movable baffle, the other end of the driving motor unit is connected to one end of the telescopic rod unit, and the other end of the telescopic rod unit is connected to the first inner wall of the smoke collecting chamber;

[0012] The drive motor unit is also electrically connected to the oil fume monitoring module. The drive motor unit is used to drive the telescopic rod unit to perform telescopic movement at least according to the oil fume concentration in the kitchen environment, thereby driving the movable baffle to move so that the position of the movable baffle relative to the first inner wall changes.

[0013] Optionally, the telescopic rod unit includes a push rod and a push rod sleeve;

[0014] One end of the push rod sleeve is connected to one end of the drive motor unit. The push rod sleeve is a tubular structure and is sleeved on the outer circumference of at least part of the structure of the push rod. One end of the push rod extending out of the push rod sleeve is connected to the first inner wall of the smoke collecting chamber. The push rod is used to perform telescopic movement along the length direction of the push rod sleeve under the driving action of the drive motor unit.

[0015] Optionally, the position adjustment module further includes a sliding connection unit; and a slide rail unit is further provided on the inner wall of the smoke collecting chamber;

[0016] The sliding connection unit is arranged at positions corresponding to the slide rail unit. One end of the sliding connection unit is connected to the movable baffle, and the other end of the sliding connection unit is connected to the slide rail unit.

[0017] In a second aspect, an embodiment of the present invention further provides a range hood control method, which is applied to the range hood according to any one of the first aspects; the control method comprises:

[0018] Control the start-up and operation of the range hood;

[0019] Obtain the concentration of oil smoke in the kitchen environment;

[0020] At least according to the oil smoke concentration in the kitchen environment, the position of the movable baffle relative to the first inner wall is adjusted to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting cavity.

[0021] Optionally, before adjusting the position of the movable baffle relative to the first inner wall based on at least the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber, the method further includes:

[0022] Get the current operating gear of the range hood;

[0023] According to the preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood, the preset upper limit oil fume concentration threshold and the preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood are determined;

[0024] Adjusting the position of the movable baffle relative to the first inner wall at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber includes:

[0025] When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0026] Optionally, before adjusting the position of the movable baffle to reduce the distance between the movable baffle and the first inner wall so as to reduce the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collecting chamber, the method further includes:

[0027] Increase the speed of the fan in the range hood to the maximum speed value corresponding to the current operating gear of the range hood.

[0028] Optionally, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collecting chamber is reduced, and the method further includes:

[0029] Issue a reminder to increase the operating gear of the range hood.

[0030] Optionally, the position of the movable baffle relative to the first inner wall is adjusted at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber, further comprising:

[0031] When the oil fume concentration in the kitchen environment is less than or equal to the preset upper limit oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower limit oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0032] Optionally, the position of the movable baffle relative to the first inner wall is adjusted at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber, further comprising:

[0033] When the oil fume concentration in the kitchen environment is lower than the preset lower oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0034] Optionally, before adjusting the position of the movable baffle to increase the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collecting chamber is increased, the method further includes:

[0035] Reduce the speed of the fan in the range hood to the minimum speed value corresponding to the current operating gear of the range hood.

[0036] Optionally, the position of the movable baffle is adjusted to increase the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collecting chamber is increased, and the method further includes:

[0037] Issue a reminder to reduce the operating gear of the range hood.

[0038] Optionally, after adjusting the position of the movable baffle to increase the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collecting chamber is increased, the method further includes:

[0039] In response to the range hood closing instruction, and after a first preset delay time, the range hood is controlled to close.

[0040] An embodiment of the present invention provides a range hood and a control method thereof, the range hood comprising a smoke collecting chamber, a movable baffle, a position adjustment module and an oil smoke monitoring module; a smoke inlet is provided on the smoke collecting chamber; the oil smoke monitoring module is arranged on the surface of the smoke collecting chamber, and the oil smoke monitoring module is used to obtain the oil smoke concentration in the kitchen environment; the movable baffle and the position adjustment module are both arranged inside the smoke collecting chamber, and one end of the position adjustment module is connected to the movable baffle, and the other end of the position adjustment module is connected to the first inner wall of the smoke collecting chamber, the first inner wall is opposite to the movable baffle and are respectively located on opposite sides of the smoke airflow corresponding to the smoke inlet; the position adjustment module is also electrically connected to the oil smoke monitoring module, and the position adjustment module is used to adjust the position of the movable baffle relative to the first inner wall at least according to the oil smoke concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the inside of the smoke collecting chamber. The range hood adds a movable baffle structure in a local area inside the smoke collection chamber. By setting a position adjustment module, the position of the movable baffle can be freely adjusted, and by setting a smoke monitoring module, the smoke concentration in the kitchen environment can be obtained, so that the position of the movable baffle relative to the first inner wall can be adjusted accordingly based on the restriction of the smoke concentration in the kitchen environment, thereby changing the size of the air inlet channel inside the smoke collection chamber. The cross-sectional area of ​​the air inlet channel inside the smoke collection chamber can be scalable and varied, which reasonably coordinates the gas flow rate inside the smoke collection chamber to adapt to different smoke generation scenarios, significantly improves the smoking effect while reducing the operating noise, improves the kitchen air purification effect of the range hood, optimizes the balance between the smoking effect and noise generation, and improves the user's cooking experience and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the overall structure of a range hood provided by an embodiment of the present invention;

[0042] Figure 2 is a schematic cross-sectional structural diagram of a range hood provided by an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the exploded structure of a range hood provided by an embodiment of the present invention;

[0044] Figure 4 1 is a flow chart of a range hood control method provided by an embodiment of the present invention;

[0045] Figure 5 is a flow chart of another range hood control method provided by an embodiment of the present invention;

[0046] Figure 6 1 is a flow chart of another range hood control method provided by an embodiment of the present invention;

[0047] Figure 7 1 is a flow chart of another range hood control method provided by an embodiment of the present invention;

[0048] Figure 8 This is a flow chart of another range hood control method provided by an embodiment of the present invention.

[0049] Description of reference numerals:

[0050] 010-smoke chamber; 011-oil guide front panel; 012-oil fume filter; 013-oil cup;

[0051] 020-moving baffle;

[0052] 030-position adjustment module; 031-drive motor unit; 032-telescopic rod unit; 0321-push rod; 0322-push rod sleeve; 033-first fixed end; 034-second fixed end; 035-sliding connection unit; 036-slide rail unit;

[0053] 040-Oil fume monitoring module;

[0054] 050 - recessed shell area;

[0055] 060-chassis; 061-motor; 062-fan. DETAILED DESCRIPTION

[0056] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0057] The embodiment of the present invention provides a range hood, such as Figure 1-Figure 3 As shown, the range hood includes a smoke collecting chamber 010, a movable baffle 020, a position adjustment module 030 and an oil smoke monitoring module 040; a smoke inlet is provided on the smoke collecting chamber 010; the oil smoke monitoring module 040 is arranged on the surface of the smoke collecting chamber 010, and the oil smoke monitoring module 040 is used to obtain the oil smoke concentration in the kitchen environment; the movable baffle 020 and the position adjustment module 030 are both arranged inside the smoke collecting chamber 010, and one end of the position adjustment module 030 is connected to the movable baffle 020, and the other end of the position adjustment module 030 is connected to the first inner wall of the smoke collecting chamber 010, the first inner wall is opposite to the movable baffle 020 and are respectively located on opposite sides of the smoke airflow corresponding to the smoke inlet; the position adjustment module 030 is also electrically connected to the oil smoke monitoring module 040, and the position adjustment module 030 is used to adjust the position of the movable baffle 020 relative to the first inner wall at least according to the oil smoke concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the inside of the smoke collecting chamber 010.

[0058] Specifically, the range hood includes a smoke collecting chamber 010, a movable baffle 020, a position adjustment module 030, and an oil smoke monitoring module 040. The smoke collecting chamber 010 is provided with a smoke inlet. For example, the smoke inlet can be located on the surface of the smoke collecting chamber 010 facing the cooking surface, or in the vertical middle of the smoke collecting chamber 010. It is understood that the interior of the smoke collecting chamber 010 can be understood as an air inlet channel. The smoke collecting chamber 010 collects oil smoke entering through the smoke inlet channel, drawing the oil smoke from the kitchen environment into the air inlet channel for subsequent exhaust to the outside, thereby purifying the kitchen air.

[0059] The movable baffle 020 is disposed inside the smoke-collecting chamber 010. The movable baffle 020 is opposed to the first inner wall of the smoke-collecting chamber 010 and is located on opposite sides of the smoke inlet corresponding to the smoke inlet. The position of the movable baffle 020 inside the smoke-collecting chamber 010 is variable, that is, the position of the movable baffle 020 relative to the first inner wall of the smoke-collecting chamber 010 is variable. In other words, the spacing between the movable baffle 020 and the first inner wall of the smoke-collecting chamber 010 is variable. Consequently, the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke-collecting chamber 010 changes, that is, the size of the air inlet channel inside the smoke-collecting chamber 010 is variable. It can be understood that the smoke-collecting chamber 010 in this embodiment has a retractable air inlet channel, and the cross-sectional area of ​​the air inlet channel inside the smoke-collecting chamber 010 is retractable and variable, so as to reasonably coordinate the gas flow rate inside the smoke-collecting chamber 010 and the relative balance between the smoking effect and the noise generation. For example, the first inner wall of the smoke collecting chamber 010 may be arranged above the smoke inlet, and the first inner wall of the smoke collecting chamber 010 may be arranged near the flow path of the smoke inlet airflow corresponding to the smoke inlet.

[0060] To put it in a more understandable way, according to the flow calculation formula Q=A×U, where Q represents the air volume of the smoke airflow corresponding to the smoke inlet, A represents the cross-sectional area through which the smoke airflow corresponding to the smoke inlet passes, and U represents the flow velocity of the smoke airflow corresponding to the smoke inlet, it can be seen that when the air volume Q of the smoke airflow corresponding to the smoke inlet is constant, if the cross-sectional area A through which the smoke airflow corresponding to the smoke inlet passes decreases, then the flow velocity U of the smoke airflow corresponding to the smoke inlet increases. Combined with the Bernoulli principle, it can be further seen that if the flow velocity U of the smoke airflow corresponding to the smoke inlet increases, then the pressure inside the smoke collection chamber 010 decreases (or it can be understood as an increase in negative pressure), which can effectively increase the smoke extraction effect of the range hood. Also, if the cross-sectional area A through which the smoke airflow corresponding to the smoke inlet passes increases, then the flow velocity U of the smoke airflow corresponding to the smoke inlet decreases. Combined with the Bernoulli principle, it can be further seen that if the flow velocity U of the smoke airflow corresponding to the smoke inlet decreases, then the pressure inside the smoke collection chamber 010 increases (or it can be understood as a decrease in negative pressure), which can effectively reduce the noise generated by the range hood. In this way, the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 can be reasonably designed to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet through the smoke collecting chamber 010, and to achieve the regulation of the pressure inside the smoke collecting chamber 010. It should also be noted that the movable baffle 020 can be designed to be connected to the position adjustment module 030 that drives the movable baffle 020 to move, and the position movement of the movable baffle 020 can be achieved by the control of the corresponding position adjustment module 030, that is, the movable baffle 020 can be connected to one end of the position adjustment module 030, and the other end of the position adjustment module 030 is connected to the first inner wall of the smoke collecting chamber 010, and the position adjustment module 030 is also arranged inside the smoke collecting chamber 010. The position adjustment module 030 can adjust the position of the movable baffle 020 to any position inside the smoke collecting chamber 010, that is, the position adjustment module 030 can adjust the position relationship of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 accordingly.

[0061] Furthermore, considering the smoke exhaust effect in the kitchen environment and the user's noise perception, it is also necessary to precisely adjust the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010, wherein the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 can be understood as the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 in a first direction, and the first direction is parallel to the flow direction of the smoke intake corresponding to the smoke inlet. That is, the oil fume monitoring module 040 is also electrically connected to the position adjustment module 030, and the oil fume monitoring module 040 is arranged on the surface of the smoke collecting chamber 010. The oil fume monitoring module 040 can obtain the oil fume concentration in the kitchen environment in real time or at regular intervals. For example, the oil fume monitoring module 040 can be arranged on the surface of the smoke collecting chamber 010 facing the stove countertop. For example, the oil fume monitoring module 040 can be arranged in the vicinity of the smoke inlet so that the oil fume monitoring module 040 can accurately detect the oil fume concentration in the kitchen environment. For example, the fume monitoring module 040 may be a control panel, or the fume monitoring module 040 may be an fume concentration sensor. The position adjustment module 030 may further adjust the position of the movable baffle 020 relative to the first inner wall based on at least the fume concentration in the kitchen environment, thereby adjusting the cross-sectional area of ​​the smoke flow passing through the smoke collection chamber 010 corresponding to the smoke inlet, so that the position of the movable baffle 020 satisfies the requirements of the smoke extraction effect and the user's perception of noise, thereby improving the user's user experience and cooking comfort. In a specific embodiment, for example, when the oil fume concentration in the kitchen environment is relatively high, the position of the movable baffle 020 can be adjusted by the position adjustment module 030 to reduce the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, thereby reducing the cross-sectional area of ​​the smoke intake airflow corresponding to the smoke inlet passing through the inside of the smoke collecting chamber 010, and increasing the flow rate of the smoke intake airflow corresponding to the smoke inlet in the inside of the smoke collecting chamber 010, thereby increasing the negative pressure value inside the smoke collecting chamber 010, enhancing the negative pressure of the range hood, improving the smoking effect, and avoiding the situation where the smoke collecting effect is poor and the oil fume is easy to escape. Furthermore, when the oil smoke concentration in the kitchen environment is relatively low, the position of the movable baffle 020 can be adjusted by the position adjustment module 030 to expand the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, thereby increasing the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet through the smoke collecting chamber 010, reducing the flow rate of the smoke airflow corresponding to the smoke inlet in the smoke collecting chamber 010, reducing flow losses, thereby achieving local pressure expansion inside the smoke collecting chamber 010, reducing the working noise of the range hood, and avoiding excessive smoking effect, unnecessary energy consumption and noise increase. In this way, it can be applied to different oil smoke generation scenarios.

[0062] According to the technical solution in the embodiment of the present invention, the range hood adds a structure of a movable baffle in a local area inside the smoke collection chamber. By setting a position adjustment module, the position of the movable baffle can be freely adjusted, and by setting an oil fume monitoring module, the oil fume concentration in the kitchen environment can be obtained, so that the position of the movable baffle relative to the first inner wall can be adjusted accordingly based on the limitation of the oil fume concentration in the kitchen environment, thereby changing the size of the air inlet channel inside the smoke collection chamber. The cross-sectional area of ​​the air inlet channel inside the smoke collection chamber can be scalable and varied, and the gas flow rate inside the smoke collection chamber is reasonably coordinated to adapt to different oil fume generation scenarios, significantly improving the smoking effect while reducing the operating noise, improving the effect of the range hood on kitchen air purification, optimizing the balance between the smoking effect and noise generation, and improving the user's cooking experience and comfort.

[0063] Optionally, continue to refer to Figure 1-Figure 3 The position adjustment module 030 includes a driving motor unit 031 and a telescopic rod unit 032; one end of the driving motor unit 031 is connected to the movable baffle 020, the other end of the driving motor unit 031 is connected to one end of the telescopic rod unit 032, and the other end of the telescopic rod unit 032 is connected to the first inner wall of the smoke collection chamber 010; the driving motor unit 031 is also electrically connected to the oil fume monitoring module 040, and the driving motor unit 031 is used to drive the telescopic rod unit 032 to perform telescopic movement at least according to the oil fume concentration in the kitchen environment, thereby driving the movable baffle 020 to move, so that the position of the movable baffle 020 relative to the first inner wall changes.

[0064] Specifically, one end of the drive motor unit 031 is connected to the movable baffle 020. For example, the surface of the movable baffle 020 includes a first fixed end 033, and the drive motor unit 031 can be connected to the first fixed end 033. The other end of the drive motor unit 031 is connected to one end of the telescopic rod unit 032, and the other end of the telescopic rod unit 032 is connected to the first inner wall of the smoke collecting chamber 010. For example, the first inner wall of the smoke collecting chamber 010 includes a second fixed end 034, and the telescopic rod unit 032 can be connected to the second fixed end 034. Furthermore, the drive motor unit 031 can drive the telescopic rod unit 032 to perform telescopic motion, thereby driving the movable baffle 020 to move, so that the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 changes. For example, when the oil smoke concentration in the kitchen environment is relatively high, the drive motor unit 031 can drive the telescopic rod unit 032 to shorten, thereby driving the movable baffle 020 to move toward the first inner wall of the smoke collecting chamber 010, that is, the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 changes, that is, the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is reduced, effectively improving the smoke extraction effect of the range hood. Also, when the oil smoke concentration in the kitchen environment is relatively low, the drive motor unit 031 can drive the telescopic rod unit 032 to extend, thereby driving the movable baffle 020 to move toward the first inner wall of the smoke collecting chamber 010, that is, the position of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 changes, that is, the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is increased, effectively reducing the noise generated by the range hood.

[0065] Further, continue to refer to Figure 1-Figure 3 The telescopic rod unit 032 includes a push rod 0321 and a push rod sleeve 0322; one end of the push rod sleeve 0322 is connected to one end of the drive motor unit 031, the push rod sleeve 0322 is a tubular structure and is sleeved on the outer periphery of at least part of the structure of the push rod 0321, and the push rod 0321 extends out of one end of the push rod sleeve 0322 and is connected to the first inner wall of the smoke collecting chamber 010. The push rod 0321 is used to perform telescopic movement along the length direction of the push rod sleeve 0322 under the driving action of the drive motor unit 031.

[0066] Specifically, the push rod sleeve 0322 can provide a stable guiding function for the push rod 0321 and can also increase the connection strength of the entire active rod unit 032.

[0067] Optionally, continue to refer to Figure 1-Figure 3The position adjustment module 030 also includes a sliding connection unit 035; a slide rail unit 036 is also provided on the inner wall of the smoke collecting chamber 010; the positions of the sliding connection unit 035 and the slide rail unit 036 are correspondingly arranged, one end of the sliding connection unit 035 is connected to the movable baffle 020, and the other end of the sliding connection unit 035 is connected to the slide rail unit 036.

[0068] Specifically, in the process of the drive motor unit 031 driving the telescopic rod unit 032 to perform telescopic movement, in order to ensure the stability of the movement of the movable baffle 020, a matching sliding connection unit 035 and a sliding rail unit 036 can be additionally provided, so that the movable baffle 020 moves in the front-to-back direction under the action of the sliding connection unit 035 and the sliding rail unit 036, thereby adjusting the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet through the interior of the smoke collection chamber 010. In addition, it should be noted that this embodiment does not make specific requirements and special limitations on the number and specific positions of the sliding connection units 035 and the sliding rail units 036. For example, the number of the sliding connection units 035 and the sliding rail units 036 can both be two, the two sliding connection units 035 can be respectively connected to the two opposite sides of the movable baffle 020, and the two sliding rail units 036 can be respectively connected to the two opposite inner walls of the smoke collection chamber 010.

[0069] Optionally, continue to refer to Figure 1-Figure 3 A recessed shell area 050 is also provided on the smoke collecting chamber 010; the recessed shell area 050 is located on the side of the smoke collecting chamber 010 away from the smoke inlet.

[0070] Specifically, the smoke collecting chamber 010 can be understood as an ultra-thin hollow structure, and the flow channel of the smoke collecting chamber 010 can be compressed through the recessed shell area 050, thereby effectively enhancing the flow rate of oil smoke in the smoke collecting chamber 010, increasing the negative pressure of the range hood, and enhancing the smoking effect of the range hood.

[0071] Optionally, continue to refer to Figure 1-Figure 3The range hood also includes a chassis 060, a support frame, a motor 061 and a fan 062. The motor 061 and the fan 062 are placed inside the chassis 060 through the support frame. For example, the fan 062 can be understood as a volute and its noise reduction component. For example, a check valve can be installed above the outlet of the fan 062 to ensure the normal realization of the smoke exhaust effect of the range hood. In addition, the smoke collection chamber 010 can be arranged below the chassis 060 and arranged vertically. The interior of the smoke collection chamber 010 is connected to the interior of the chassis 060 to form a smoke exhaust channel. When the fan 062 is working, it can generate negative pressure at the smoke inlet. The smoke collection chamber 010 can collect the oil smoke entering through the smoke inlet, so as to suck the oil smoke in the kitchen environment into the smoke exhaust channel and discharge the oil smoke from the outlet of the fan 062, thereby purifying the kitchen air and improving the comfort of users when using the kitchen. It should also be noted that the chassis 060 and the smoke collecting chamber 010 can be integrally formed or detachably connected, facilitating cleaning or maintenance of the chassis 060 or the smoke collecting chamber 010. The smoke collecting chamber 010 of the ultra-thin-wall range hood in the embodiment of the present invention can be installed on one side of the stove top, typically the side of the stove top against the wall. This not only shortens the distance between the smoke inlet and the stove top, improving the oil absorption effect, but also reduces the vertical depth of the range hood, saving space above the stove top and increasing the operating space between the stove top and the smoke collecting chamber 010.

[0072] Optionally, continue to refer to Figure 1-Figure 3The smoke collecting chamber 010 further includes an oil guide front panel 011, an oil fume filter 012, and an oil cup 013. The oil guide front panel 011 can be disposed outside the smoke collecting chamber 010, and can be disposed in the smoke inlet accessory area. The oil guide front panel 011 can guide the oil fume, and can guide the oil fume to flow along the oil guide front panel 011 to the smoke inlet, so that the oil fume in the kitchen environment enters the interior of the smoke collecting chamber 010. The surface of the oil guide front panel 011 can be made of corrosion-resistant material to effectively prevent the adhesion of oil stains, avoid the diffusion of oil fume, and improve the smoking efficiency of the ultra-thin-wall range hood. For example, the oil guide front panel 011 can be at a certain angle to the horizontal plane to further expand the negative pressure range at the smoke inlet, while preventing the oil fume from diffusing from the rear side of the range hood, thereby achieving a better smoking effect. In other words, the tilted oil-guiding front panel 011 can direct the flow path of oil smoke closer to the smoke inlet, quickly directing the oil smoke to the smoke inlet and further improving smoking efficiency. The oil smoke filter 012 can be disposed within the smoke-collecting chamber 010, at the smoke inlet, to filter the oil smoke. The oil cup 013 can be disposed at the bottom of the smoke-collecting chamber 010. The oil cup 013 is detachably connected to the smoke-collecting chamber 010, and the oil cup 013 is in communication with the interior of the smoke-collecting chamber 010, making it easy for the user to remove the oil cup 013 to clean the oil stains within it, making it more convenient to use. In a specific embodiment, during the operation of the range hood, the motor 061 inside the chassis 060 is started, driving the blades inside the volute corresponding to the fan 062 to rotate, and the oil smoke is sucked in from the front side of the oil smoke filter 012 under the action of suction. The oil smoke filter 012 condenses and filters the oil smoke to remove grease and moisture in the smoke. The filtered grease and moisture move downward along the oil smoke filter 012 and flow into the oil cup 013 on the lower side at the rear side of the oil guide front panel 011.

[0073] Based on the same inventive concept, an embodiment of the present invention further provides a range hood control method, which is applied to the range hood provided in any one of the embodiments of the present invention. Figure 4 As shown, the control method includes:

[0074] S110, controlling the range hood to start and operate.

[0075] Specifically, continue to refer to Figure 1-Figure 3 The range hood can be started by the user pressing the power button, voice command, gesture command, user input gear, smoke stove linkage system, etc., that is, the range hood can start the smoking process. For example, the motor 061 in the chassis 060 can control the fan 062 to start running at the default speed or initial speed.

[0076] S120: Obtain the oil smoke concentration in the kitchen environment.

[0077] Specifically, continue to refer to Figure 1-Figure 3 The oil fume monitoring module 040 can be used to obtain the oil fume concentration in the kitchen environment. The oil fume monitoring module 040 is disposed on the surface of the smoke collecting chamber 010. For example, the oil fume monitoring module 040 can be disposed on the surface of the smoke collecting chamber 010 facing the stove top. For example, the oil fume monitoring module 040 can be disposed in the vicinity of the smoke inlet so that the oil fume monitoring module 040 can accurately detect the oil fume concentration in the kitchen environment. For example, the oil fume concentration in the kitchen environment can be monitored in real time or periodically using an oil fume concentration monitor or a gas sensor.

[0078] S130. Adjust the position of the movable baffle relative to the first inner wall at least according to the oil smoke concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber.

[0079] Specifically, continue to refer to Figure 1-Figure 3The oil fume monitoring module 040 is also electrically connected to the position adjustment module 030. The oil fume monitoring module 040 can transmit the obtained oil fume concentration in the kitchen environment to the position adjustment module 030. The position adjustment module 030 can adjust the position of the movable baffle 020 relative to the first inner wall at least according to the oil fume concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber 010, so that the position of the movable baffle 020 meets the requirements of the smoking effect and the user's perception of noise, thereby improving the user's usage experience and cooking comfort. It should also be noted that the position of the movable baffle 020 relative to the first inner wall of the smoke collection chamber 010 can be understood as the distance between the movable baffle 020 and the first inner wall of the smoke collection chamber 010 in the first direction, and the first direction is parallel to the flow direction of the smoke airflow corresponding to the smoke inlet. In a specific embodiment, for example, when the oil fume concentration in the kitchen environment is relatively high, the position of the movable baffle 020 can be adjusted by the position adjustment module 030 to reduce the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, thereby reducing the cross-sectional area of ​​the smoke intake airflow corresponding to the smoke inlet passing through the inside of the smoke collecting chamber 010, and increasing the flow rate of the smoke intake airflow corresponding to the smoke inlet in the inside of the smoke collecting chamber 010, thereby increasing the negative pressure value inside the smoke collecting chamber 010, enhancing the negative pressure of the range hood, improving the smoking effect, and avoiding the situation where the smoke collecting effect is poor and the oil fume is easy to escape. Furthermore, when the oil smoke concentration in the kitchen environment is relatively low, the position of the movable baffle 020 can be adjusted by the position adjustment module 030 to expand the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, thereby increasing the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet through the smoke collecting chamber 010, reducing the flow rate of the smoke airflow corresponding to the smoke inlet in the smoke collecting chamber 010, reducing flow losses, thereby achieving local pressure expansion inside the smoke collecting chamber 010, reducing the working noise of the range hood, and avoiding excessive smoking effect, unnecessary energy consumption and noise increase. In this way, it can be applied to different oil smoke generation scenarios.

[0080] The technical solution in the embodiment of the present invention first controls the range hood to start running, then obtains the oil fume concentration in the kitchen environment, and finally adjusts the position of the movable baffle relative to the first inner wall at least according to the oil fume concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber. By using the above method, a movable baffle structure is added to a local area inside the smoke collecting chamber, and the position of the movable baffle can be freely adjusted by setting a position adjustment module, and the oil fume monitoring module can be set to obtain the oil fume concentration in the kitchen environment, so as to facilitate the subsequent restriction of the oil fume concentration in the kitchen environment, and adjust the position of the movable baffle relative to the first inner wall accordingly, thereby changing the size of the air inlet channel inside the smoke collecting chamber. The cross-sectional area of ​​the air inlet channel inside the smoke collecting chamber can be scalable and varied, and the gas flow rate inside the smoke collecting chamber is reasonably coordinated to adapt to different oil fume generation scenarios, significantly improving the smoking effect while reducing the operating noise, improving the effect of the range hood on kitchen air purification, optimizing the balance between the smoking effect and noise generation, and improving the user's cooking experience and comfort.

[0081] An embodiment of the present invention further provides another range hood control method, which is optimized based on the above embodiment. Optionally, before adjusting the position of the movable baffle relative to the first inner wall based on at least the fume concentration in the kitchen environment to adjust the cross-sectional area of ​​the smoke flow corresponding to the smoke inlet passing through the smoke collection chamber, the method further includes:

[0082] Get the current operating gear of the range hood;

[0083] According to the preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood, the preset upper limit oil fume concentration threshold and the preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood are determined;

[0084] Adjusting the position of the movable baffle relative to the first inner wall at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber includes:

[0085] When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0086] For details not yet provided in this embodiment, please refer to the above embodiments. Figure 5 As shown, the control method includes:

[0087] S210, controlling the range hood to start and operate.

[0088] S220: Obtain the oil smoke concentration in the kitchen environment.

[0089] S230: Obtain the current operating gear of the range hood.

[0090] Specifically, a user can activate the range hood by pressing a button, using a voice command, or performing a gesture command. In response to the activation command, the range hood system begins operation. For example, in one embodiment, the current operating gear of the range hood during operation can be determined based on the range hood's fan current signal and / or duct air pressure signal. The range hood has different operating gears (for example, these may include low, high, and stir-fry). It will be appreciated that different operating gears correspond to different amounts of oil smoke and different extraction capabilities, as well as different noise levels. For example, when the range hood is in low gear, the stove generates a lower concentration of oil smoke during cooking, the smoke concentration it can handle is lower, and the noise level is lower. When the range hood is in high gear, the stove generates a higher concentration of oil smoke during cooking, the smoke concentration it can handle is higher, and the noise level is higher.

[0091] S240. Determine a preset upper limit oil fume concentration threshold and a preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood based on a preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood.

[0092] Among them, the preset mapping relationship between the operating gear and the oil fume concentration interval corresponding to the gear operation can be understood as a pre-set corresponding relationship. Specifically, for different operating gears of the range hood, it corresponds to different intervals of oil fume concentration that can be handled. For example, when the operating gear of the range hood is a weak gear, it can correspond to the first oil fume concentration interval, and when the operating gear of the range hood is a strong gear, it can correspond to the second oil fume concentration interval, wherein the lower limit oil fume concentration threshold of the second oil fume concentration interval is greater than the upper limit oil fume concentration threshold of the first oil fume concentration interval. According to the preset mapping relationship between the operating gear and the oil fume concentration interval corresponding to the gear operation, and the current operating gear of the range hood, the preset upper limit oil fume concentration threshold and the preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood can be determined, so as to facilitate the subsequent comparison of the obtained oil fume concentration in the kitchen environment with the preset upper limit oil fume concentration threshold or the preset lower limit oil fume concentration threshold, thereby realizing precise adjustment of the position of the movable baffle.

[0093] It should be noted that S220 is a step for obtaining the oil fume concentration in the kitchen environment, S230 is a step for obtaining the current operating gear of the range hood, and S240 is a step for determining a preset upper limit oil fume concentration threshold value based on the current operating gear of the range hood. S230 and S240 are executed in sequence, but the sequence of S220 and S230, and S220 and S240 in this embodiment is only for example and not for limitation. In fact, S220 can be executed first, and then S230 and S240 can be executed in sequence, or S230 and S240 can be executed in sequence first, and then S220 can be executed, or S220 and S230 can be executed at the same time, or S220 and S240 can be executed at the same time.

[0094] S250. When the oil fume concentration in the kitchen environment is greater than a preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0095] Specifically, continue to refer to Figure 1-Figure 3 When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, it means that the oil fume concentration in the kitchen environment is relatively large and has exceeded the maximum value of the oil fume concentration range that the current operating gear of the range hood can handle. Priority can be given to improving the smoke extraction effect of the range hood, and the position of the movable baffle 020 is adjusted to reduce the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber 010 can be reduced, and the flow rate of the smoke airflow corresponding to the smoke inlet in the smoke collecting chamber 010 can be increased, thereby increasing the negative pressure value inside the smoke collecting chamber 010, enhancing the negative pressure of the range hood, improving the smoke extraction effect, and avoiding the situation where the smoke collecting effect is poor and the oil fume is easy to escape.

[0096] In addition, it should be noted that the position adjustment module 030 includes a drive motor unit 031 and a telescopic rod unit 032, and the telescopic rod unit 032 includes a push rod 0321 and a push rod sleeve 0322. There is a preset mapping relationship between the position adjustment of the movable baffle 020 relative to the first inner wall of the smoke-collecting chamber 010 and the length of the push rod 0321 extending from the push rod sleeve 0322. In this way, the length of the push rod 0321 extending from the push rod sleeve 0322 can be precisely controlled by the drive motor unit 031 to indirectly determine whether the distance between the movable baffle 020 and the first inner wall of the smoke-collecting chamber 010 is reduced. For example, when the push rod 0321 is driven by the drive motor unit 031, it shortens along the length direction of the push rod sleeve 0322, which can drive the movable baffle 020 to move toward the first inner wall of the smoke-collecting chamber 010. In this way, the distance between the movable baffle 020 and the first inner wall of the smoke-collecting chamber 010 is reduced, effectively improving the smoke-collecting effect of the range hood. This embodiment does not make any specific requirements or special limitations on the shortened length of the push rod 0321 along the length direction of the push rod sleeve 0322 and the length of the movable baffle 020 moving toward the first inner wall of the smoke collection chamber 010. It can be selected and set according to the specific value of the oil fume concentration in the kitchen environment and the smoking rate.

[0097] Optionally, before adjusting the position of the movable baffle to reduce the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber is reduced, it also includes: increasing the speed of the fan in the range hood to the maximum speed value corresponding to the current operating gear of the range hood.

[0098] Specifically, continue to refer to Figure 1-Figure 3 When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, it means that the oil fume concentration in the kitchen environment is relatively large and has exceeded the maximum value of the oil fume concentration range that the current operating gear of the range hood can handle. At this time, the power of the motor 061 can be increased to increase the speed of the corresponding fan 062, effectively increase the negative pressure value inside the smoke chamber 010, and enhance the negative pressure value at the smoke inlet, thereby improving the smoking effect. In this process, the speed of the fan 062 can also be monitored in real time until the speed of the fan 062 is increased to the maximum speed value corresponding to the current operating gear of the range hood. Afterwards, the length of the push rod 0321 extending out of the push rod sleeve 0322 can be accurately controlled by driving the motor unit 031, thereby driving the position of the movable baffle 020 to change, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke chamber 010 can be reduced, further increasing the negative pressure value inside the smoke chamber 010.

[0099] Optionally, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber is reduced, and it also includes: issuing a reminder to increase the operating gear of the range hood.

[0100] Specifically, continue to refer to Figure 1-Figure 3 During the adjustment of the position of the movable baffle 020, the user can be promptly reminded to increase the range hood's operating gear. For example, if the range hood's operating gear has not been adjusted to the highest gear, the user will be continuously reminded to increase the gear. If the range hood's operating gear has already been adjusted to the highest gear, the current gear will be maintained. After the range hood's operating gear is increased, the current range hood operating gear can be retrieved, and the oil fume concentration in the kitchen environment can be re-compared with the corresponding oil fume concentration threshold, and the next cycle can be continued.

[0101] An embodiment of the present invention further provides another range hood control method, which is optimized based on the above embodiment. Optionally, before adjusting the position of the movable baffle relative to the first inner wall based on at least the fume concentration in the kitchen environment to adjust the cross-sectional area of ​​the smoke flow corresponding to the smoke inlet passing through the smoke collection chamber, the method further includes:

[0102] Get the current operating gear of the range hood;

[0103] According to the preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood, the preset upper limit oil fume concentration threshold and the preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood are determined;

[0104] Adjusting the position of the movable baffle relative to the first inner wall at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber includes:

[0105] When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0106] Furthermore, the position of the movable baffle relative to the first inner wall is adjusted at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber, and further comprising:

[0107] When the oil fume concentration in the kitchen environment is less than or equal to the preset upper limit oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower limit oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0108] For details not yet provided in this embodiment, please refer to the above embodiments. Figure 6 As shown, the control method includes:

[0109] S310, controlling the range hood to start and operate.

[0110] S320: Obtain the oil smoke concentration in the kitchen environment.

[0111] S330: Obtain the current operating gear of the range hood.

[0112] S340. Determine a preset upper limit oil fume concentration threshold and a preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood based on a preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood.

[0113] S350. When the oil fume concentration in the kitchen environment is greater than a preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0114] S360. When the oil fume concentration in the kitchen environment is less than or equal to the preset upper oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0115] Specifically, continue to refer to Figure 1-Figure 3When the oil fume concentration in the kitchen environment is less than or equal to the preset upper limit oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower limit oil fume concentration threshold, it means that the oil fume concentration in the kitchen environment at this time just meets the processing range of the current operating gear of the range hood. At this time, the range hood is operating normally, and the user's usage experience and cooking comfort can be increased. The position of the movable baffle 020 is adjusted to expand the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, so that the cross-sectional area of ​​the smoke intake airflow corresponding to the smoke inlet passing through the smoke collecting chamber 010 can be expanded, the flow rate of the smoke intake airflow corresponding to the smoke inlet in the smoke collecting chamber 010 is reduced, and the flow loss is reduced, thereby realizing local expansion pressure inside the smoke collecting chamber 010, reducing the working noise of the range hood, and reducing the impact of noise on the user as much as possible, avoiding excessive smoking effect, unnecessary energy consumption and noise increase.

[0116] In addition, it should be noted that the position adjustment module 030 includes a drive motor unit 031 and a telescopic rod unit 032, and the telescopic rod unit 032 includes a push rod 0321 and a push rod sleeve 0322. There is a preset mapping relationship between the position adjustment of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 and the length of the push rod 0321 extending from the push rod sleeve 0322. In this way, the length of the push rod 0321 extending from the push rod sleeve 0322 can be precisely controlled by the drive motor unit 031 to indirectly determine whether the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is expanded. For example, when the push rod 0321 is driven by the drive motor unit 031, it extends along the length direction of the push rod sleeve 0322, thereby driving the movable baffle 020 to move in a direction away from the first inner wall of the smoke collecting chamber 010. In this way, the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is expanded, effectively reducing the noise generated by the range hood. This embodiment does not make any specific requirements or special limitations on the extension length of the push rod 0321 along the length direction of the push rod sleeve 0322 and the length of the movable baffle 020 moving in the direction away from the first inner wall of the smoke collection chamber 010. It can be selected and set according to the specific value of the oil fume concentration and the noise generation value in the kitchen environment.

[0117] It should be noted that S350 and S360 are two parallel steps regarding the comparison results of the oil fume concentration in the kitchen environment and the preset upper limit oil fume concentration threshold. However, the order of S350 and S360 in this embodiment is only an example and not a limitation. In fact, S350 can be executed first and then S360, or S360 can be executed first and then S350.

[0118] An embodiment of the present invention further provides another range hood control method, which is optimized based on the above embodiment. Optionally, before adjusting the position of the movable baffle relative to the first inner wall based on at least the fume concentration in the kitchen environment to adjust the cross-sectional area of ​​the smoke flow corresponding to the smoke inlet passing through the smoke collection chamber, the method further includes:

[0119] Get the current operating gear of the range hood;

[0120] According to the preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood, the preset upper limit oil fume concentration threshold and the preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood are determined;

[0121] Adjusting the position of the movable baffle relative to the first inner wall at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collection chamber includes:

[0122] When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0123] Furthermore, the position of the movable baffle relative to the first inner wall is adjusted at least according to the concentration of oil smoke in the kitchen environment to adjust the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber, and further comprising:

[0124] When the oil fume concentration in the kitchen environment is lower than the preset lower oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0125] For details not yet provided in this embodiment, please refer to the above embodiments. Figure 7 As shown, the control method includes:

[0126] S410, controlling the range hood to start and operate.

[0127] S420: Obtain the oil smoke concentration in the kitchen environment.

[0128] S430: Obtain the current operating gear of the range hood.

[0129] S440. Determine a preset upper limit oil fume concentration threshold and a preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood based on a preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood.

[0130] S450. When the oil fume concentration in the kitchen environment is greater than a preset upper limit oil fume concentration threshold, the position of the movable baffle is adjusted to reduce the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be reduced.

[0131] S460. When the oil fume concentration in the kitchen environment is lower than the preset lower oil fume concentration threshold, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber can be expanded.

[0132] Specifically, continue to refer to Figure 1-Figure 3 When the oil fume concentration in the kitchen environment is less than the preset lower oil fume concentration threshold, the oil fume concentration in the kitchen environment must be less than or equal to the preset upper oil fume concentration threshold, indicating that the oil fume concentration in the kitchen environment is relatively small and is lower than the minimum value of the oil fume concentration range that the current operating gear of the range hood can handle. The power loss and noise impact can be considered to adjust the position of the movable baffle 020 to expand the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber 010 can be expanded, the flow rate of the smoke airflow corresponding to the smoke inlet in the smoke collecting chamber 010 can be reduced, and the flow loss can be reduced, thereby realizing local expansion pressure inside the smoke collecting chamber 010, reducing the working noise of the range hood, and reducing the impact of noise on users as much as possible, avoiding excessive smoking effect, unnecessary energy consumption and noise increase.

[0133] In addition, it should be noted that the position adjustment module 030 includes a drive motor unit 031 and a telescopic rod unit 032, and the telescopic rod unit 032 includes a push rod 0321 and a push rod sleeve 0322. There is a preset mapping relationship between the position adjustment of the movable baffle 020 relative to the first inner wall of the smoke collecting chamber 010 and the length of the push rod 0321 extending from the push rod sleeve 0322. In this way, the length of the push rod 0321 extending from the push rod sleeve 0322 can be precisely controlled by the drive motor unit 031 to indirectly determine whether the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is expanded. For example, when the push rod 0321 is driven by the drive motor unit 031, it extends along the length direction of the push rod sleeve 0322, thereby driving the movable baffle 020 to move in a direction away from the first inner wall of the smoke collecting chamber 010. In this way, the distance between the movable baffle 020 and the first inner wall of the smoke collecting chamber 010 is expanded, effectively reducing the noise generated by the range hood. This embodiment does not make any specific requirements or special limitations on the extension length of the push rod 0321 along the length direction of the push rod sleeve 0322 and the length of the movable baffle 020 moving in the direction away from the first inner wall of the smoke collection chamber 010. It can be selected and set according to the specific value of the oil fume concentration and the noise generation value in the kitchen environment.

[0134] It should be noted that S450 and S460 are two parallel steps regarding the comparison results of the oil fume concentration in the kitchen environment and the preset upper limit oil fume concentration threshold. However, the order of S450 and S460 in this embodiment is only an example and not a limitation. In fact, S450 can be executed first and then S460, or S460 can be executed first and then S450.

[0135] Optionally, before adjusting the position of the movable baffle to expand the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber is expanded, it also includes: lowering the speed of the fan in the range hood to the minimum speed value corresponding to the current operating gear of the range hood.

[0136] Specifically, continue to refer to Figure 1-Figure 3When the oil fume concentration in the kitchen environment is less than the preset lower oil fume concentration threshold, the oil fume concentration in the kitchen environment must be less than or equal to the preset upper oil fume concentration threshold, indicating that the oil fume concentration in the kitchen environment is relatively low and has fallen below the minimum value of the oil fume concentration range that the range hood's current operating gear can handle. At this time, the power of motor 061 can be reduced to reduce the corresponding speed of fan 062, effectively reducing the noise generated by the range hood and improving the user's cooking comfort. During this process, the speed of fan 062 can also be monitored in real time until the speed of fan 062 is reduced to the minimum speed value corresponding to the range hood's current operating gear. Afterwards, the length of push rod 0321 extending from push rod sleeve 0322 can be precisely controlled by driving motor unit 031, thereby driving the position of movable baffle 020 to change, so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the smoke collection chamber 010 is expanded, further reducing the overall noise generated by the range hood.

[0137] Optionally, the position of the movable baffle is adjusted to expand the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber is expanded, and it also includes: issuing a reminder to reduce the operating gear of the range hood.

[0138] Specifically, continue to refer to Figure 1-Figure 3 During the adjustment of the position of the movable baffle 020, the user can be promptly reminded to lower the range hood's operating gear. For example, if the range hood's operating gear has not been adjusted to the lowest gear, the user will be continuously reminded to lower the gear. If the range hood's operating gear has already been adjusted to the lowest gear, the current state will be maintained. After the range hood's operating gear is lowered, the current range hood operating gear can be retrieved, and the oil fume concentration in the kitchen environment can be re-compared with the corresponding oil fume concentration threshold, and the next cycle can be continued.

[0139] Optionally, after adjusting the position of the movable baffle to expand the distance between the movable baffle and the first inner wall so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber is expanded, it also includes: responding to the range hood shutdown instruction and controlling the range hood to shut down after a first preset delay time.

[0140] Specifically, continue to refer to Figure 1-Figure 3After adjusting the position of movable baffle 020, if the oil fume concentration in the kitchen environment is less than the preset lower oil fume concentration threshold, this indicates that the oil fume concentration in the kitchen environment is low and has fallen below the minimum oil fume concentration range that the range hood can handle at its current operating level. Considering power consumption and noise impact, the system may wait for the user to input a shutdown command. In other words, in response to the range hood shutdown command, the system may shut down the range hood after a first preset time delay. For example, the first preset time may be three minutes. Furthermore, in response to the range hood shutdown command, the position of movable baffle 020 may be restored to its initial position.

[0141] The embodiment of the present invention also provides another range hood control method, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, after the range hood is started, the oil fume monitoring module 040 can obtain the oil fume concentration in the kitchen environment and the current operating gear of the range hood during operation. Then, based on the preset mapping relationship between the operating gear and the oil fume concentration range corresponding to the gear operation, and the current operating gear of the range hood, the preset upper and lower oil fume concentration thresholds corresponding to the current operating gear of the range hood can be determined. When the oil fume concentration in the kitchen environment exceeds the preset upper oil fume concentration threshold, the power of the motor 061 can be increased to increase the speed of the corresponding fan 062 until the speed of the fan 062 reaches the maximum speed value corresponding to the current operating gear of the range hood. Afterwards, the push rod 0321 can be precisely controlled by the driving motor unit 031 to shorten along the length of the push rod sleeve 0322, thereby driving the position of the movable baffle 020 to change, reducing the distance between the movable baffle 020 and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collection chamber 010 is reduced, further increasing the negative pressure value within the smoke collection chamber 010. It should also be noted that during the process of increasing the speed of the fan 062, if the speed of the fan 062 has not yet reached the maximum speed value corresponding to the current operating gear of the range hood, it is necessary to continue to obtain the oil fume concentration in the kitchen environment and further increase the power of the motor 061 until the speed of the fan 062 is increased to the maximum speed value corresponding to the current operating gear of the range hood, and then the position of the movable baffle 020 can be adjusted. In addition, during the process of adjusting the position of the movable baffle 020, it is also possible to promptly remind the user to increase the operating gear of the range hood until the operating gear of the range hood is raised. For example, a reminder to increase the operating level of the range hood can be issued first. If the user raises the operating level of the range hood, the oil fume concentration in the kitchen environment can be obtained again. If the user does not adjust the operating level of the range hood, it is necessary to continue to issue reminders to increase the operating level of the range hood.

[0142] When the oil fume concentration in the kitchen environment is less than or equal to the preset upper limit oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower limit oil fume concentration threshold, the push rod 0321 can be precisely controlled by driving the motor unit 031 to extend along the length direction of the push rod sleeve 0322, thereby driving the position of the movable baffle 020 to change, and expanding the distance between the movable baffle 020 and the first inner wall, so that the cross-sectional area of ​​the smoke intake airflow corresponding to the smoke inlet passing through the smoke collecting chamber 010 can be expanded, reducing the flow rate of the smoke intake airflow corresponding to the smoke inlet in the smoke collecting chamber 010, and reducing the working noise of the range hood.

[0143] Furthermore, when the oil smoke concentration in the kitchen environment is less than a preset lower oil smoke concentration threshold, the push rod 0321 can be precisely controlled by driving the motor unit 031 to extend along the length of the push rod sleeve 0322, thereby driving the position of the movable baffle 020 to change, expanding the distance between the movable baffle 020 and the first inner wall, so that the cross-sectional area of ​​the smoke airflow corresponding to the smoke inlet passing through the smoke collecting chamber 010 is expanded, reducing the flow rate of the smoke airflow corresponding to the smoke inlet within the smoke collecting chamber 010, and reducing the operating noise of the range hood. It should also be noted that during the process of reducing the speed of the fan 062, if the speed of the fan 062 has not yet reached the minimum speed value corresponding to the current operating gear of the range hood, it is necessary to continue to obtain the oil smoke concentration in the kitchen environment and further reduce the power of the motor 061 until the speed of the fan 062 is reduced to the minimum speed value corresponding to the current operating gear of the range hood, and then the position of the movable baffle 020 can be adjusted. Furthermore, during the adjustment of the position of the movable baffle 020, the user can be promptly reminded to reduce the range hood operating level until the range hood operating level is lowered. For example, a reminder to reduce the range hood operating level can be issued first. If the user reduces the range hood operating level, the oil fume concentration in the kitchen environment can be re-obtained. If the user does not adjust the range hood operating level, the reminder to reduce the range hood operating level needs to be issued again.

[0144] On this basis, after the process of adjusting the position of the movable baffle 020 is completed, the power consumption and noise impact can be additionally considered, and the user can wait for the user to input a shutdown command. That is, in response to the range hood shutdown command, the range hood is turned off after a first preset delay. In addition, in response to the range hood shutdown command, the position of the movable baffle 020 can be restored to the initial position.

[0145] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood, characterized in that: It comprises a smoke collecting chamber (010), a movable baffle (020), a position adjustment module (030) and an oil smoke monitoring module (040); The smoke collecting chamber (010) is provided with a smoke inlet; The oil fume monitoring module (040) is arranged on the surface of the smoke collecting chamber (010), and the oil fume monitoring module (040) is used to obtain the oil fume concentration in the kitchen environment; The movable baffle (020) and the position adjustment module (030) are both arranged inside the smoke collecting chamber (010), and one end of the position adjustment module (030) is connected to the movable baffle (020), and the other end of the position adjustment module (030) is connected to the first inner wall of the smoke collecting chamber (010), the first inner wall and the movable baffle (020) are opposite to each other and are respectively located on opposite sides of the smoke inlet airflow corresponding to the smoke inlet; The position adjustment module (030) is also electrically connected to the oil fume monitoring module (040), and the position adjustment module (030) is used to adjust the position of the movable baffle (020) relative to the first inner wall according to at least the oil fume concentration in the kitchen environment, so as to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber (010).

2. The range hood according to claim 1, characterized in that: The position adjustment module (030) comprises a driving motor unit (031) and a telescopic rod unit (032); One end of the driving motor unit (031) is connected to the movable baffle (020), the other end of the driving motor unit (031) is connected to one end of the telescopic rod unit (032), and the other end of the telescopic rod unit (032) is connected to the first inner wall of the smoke collecting chamber (010); The driving motor unit (031) is also electrically connected to the oil fume monitoring module (040), and the driving motor unit (031) is used to drive the telescopic rod unit (032) to perform telescopic movement at least according to the oil fume concentration in the kitchen environment, thereby driving the movable baffle (020) to move, so that the position of the movable baffle (020) relative to the first inner wall changes.

3. The range hood according to claim 2, characterized in that: The telescopic rod unit (032) comprises a push rod (0321) and a push rod sleeve (0322); One end of the push rod sleeve (0322) is connected to one end of the drive motor unit (031); the push rod sleeve (0322) is a tubular structure and is sleeved on the outer periphery of at least part of the structure of the push rod (0321); one end of the push rod (0321) extending out of the push rod sleeve (0322) is connected to the first inner wall of the smoke collecting chamber (010); the push rod (0321) is used to perform telescopic movement along the length direction of the push rod sleeve (0322) under the driving action of the drive motor unit (031).

4. The range hood according to claim 2, characterized in that: The position adjustment module (030) further comprises a sliding connection unit (035); a slide rail unit (036) is further provided on the inner wall of the smoke collecting chamber (010); The sliding connection unit (035) is arranged correspondingly to the position of the slide rail unit (036), one end of the sliding connection unit (035) is connected to the movable baffle (020), and the other end of the sliding connection unit (035) is connected to the slide rail unit (036).

5. A range hood control method, characterized in that: Applicable to the range hood according to any one of claims 1 to 4; the control method comprises: Control the start-up and operation of the range hood; Obtain the concentration of oil smoke in the kitchen environment; At least according to the oil smoke concentration in the kitchen environment, the position of the movable baffle (020) relative to the first inner wall is adjusted to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber (010).

6. The control method according to claim 5, characterized in that: At least according to the fume concentration in the kitchen environment, the position of the movable baffle (020) relative to the first inner wall is adjusted to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010), and further comprising: Obtaining the current operating gear of the range hood; Determining a preset upper limit oil fume concentration threshold and a preset lower limit oil fume concentration threshold corresponding to the current operating gear of the range hood according to a preset mapping relationship between the operating gear and the oil fume concentration interval corresponding to the gear operation, and the current operating gear of the range hood; At least according to the fume concentration in the kitchen environment, adjusting the position of the movable baffle (020) relative to the first inner wall to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber (010), comprising: When the oil fume concentration in the kitchen environment is greater than the preset upper limit oil fume concentration threshold, the position of the movable baffle (020) is adjusted to reduce the distance between the movable baffle (020) and the first inner wall, so that the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet port passing through the inside of the smoke collection chamber (010) can be reduced.

7. The control method according to claim 6, characterized in that: Before adjusting the position of the movable baffle (020) to reduce the distance between the movable baffle (020) and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010) is reduced, the method further includes: The rotation speed of the fan in the range hood is increased to the maximum rotation speed value corresponding to the current operating gear of the range hood.

8. The control method according to claim 6, characterized in that: The position of the movable baffle (020) is adjusted to reduce the distance between the movable baffle (020) and the first inner wall, so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010) is reduced, and the method further comprises: Issue a reminder to increase the operating gear of the range hood.

9. The control method according to claim 6, characterized in that: At least according to the fume concentration in the kitchen environment, the position of the movable baffle (020) relative to the first inner wall is adjusted to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber (010), further comprising: When the oil fume concentration in the kitchen environment is less than or equal to the preset upper oil fume concentration threshold, and the oil fume concentration in the kitchen environment is greater than or equal to the preset lower oil fume concentration threshold, the position of the movable baffle (020) is adjusted to expand the distance between the movable baffle (020) and the first inner wall, so that the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet port passing through the inside of the smoke collection chamber (010) is expanded.

10. The control method according to claim 6, characterized in that: At least according to the fume concentration in the kitchen environment, the position of the movable baffle (020) relative to the first inner wall is adjusted to adjust the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet passing through the interior of the smoke collection chamber (010), further comprising: When the oil smoke concentration in the kitchen environment is less than the preset lower oil smoke concentration threshold, the position of the movable baffle (020) is adjusted to expand the distance between the movable baffle (020) and the first inner wall, so that the cross-sectional area of ​​the smoke inlet airflow corresponding to the smoke inlet port passing through the inside of the smoke collection chamber (010) can be expanded.

11. The control method according to claim 10, characterized in that: Before adjusting the position of the movable baffle (020) to expand the distance between the movable baffle (020) and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010) is expanded, the method further includes: The rotation speed of the fan in the range hood is reduced to the minimum rotation speed value corresponding to the current operating gear of the range hood.

12. The control method according to claim 10, characterized in that: The position of the movable baffle (020) is adjusted to expand the distance between the movable baffle (020) and the first inner wall, so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010) is expanded, and the method further comprises: Issue a reminder to reduce the operating gear of the range hood.

13. The control method according to claim 10, characterized in that: After adjusting the position of the movable baffle (020) to expand the distance between the movable baffle (020) and the first inner wall so that the cross-sectional area of ​​the smoke inlet corresponding to the smoke inlet passing through the interior of the smoke collecting chamber (010) is expanded, the method further comprises: In response to a range hood shut-down instruction, and after a first preset delay, the range hood is controlled to shut down.

Images