Range hood and fume zoning control method

Abstract

This invention provides a range hood and a method for controlling fume zoning. The range hood's fume inlet area includes a left fume inlet and a right fume inlet. A fume control device is located within the range hood's fume inlet chamber. A first rotating baffle and a second rotating baffle are located on both the left and right sides of the fume control device. The fume control device includes a first-stage power unit and a second-stage power unit, which respectively drive the two first rotating baffles and two second rotating baffles to rotate. The first-stage and second-stage power units are also used to determine the opening and closing angles of the two first rotating baffles and two second rotating baffles based on the fume concentration at the left and right fume inlets. The opening and closing angle represents the angle between the rotating baffle and the side wall of the fume inlet chamber. This method can actively adjust the negative pressure range of the fume inlet of the range hood head, preventing fume escape, precisely controlling fume, and achieving intelligent fume extraction.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a range hood and a method for controlling fume zoning. Background Technology

[0002] Most range hoods on the market use an open "Γ"-shaped smoke collection structure, including a back panel and a top panel. The smoke inlet is located on the back panel near the top panel. Because the back panel is flat, smoke tends to escape through the sides. A common solution is to increase the maximum airflow and static pressure, but given the ventilation in a kitchen, the range hood's smoke extraction and exhaust efficiency is poor in windy conditions.

[0003] Due to factors such as indoor air circulation, cooking fumes can diffuse unpredictably into the surrounding area. Range hoods cannot completely remove all fumes, and some inevitably spreads into the kitchen, causing air pollution. Reducing the amount of fumes entering the kitchen is a crucial issue that needs to be addressed. Currently, the suction inlet of existing range hoods is located behind the cooking pot, with the negative pressure zone far from the center of the cookware. This means the negative pressure zone cannot effectively cover the path of the rising fumes, increasing the likelihood of fumes escaping. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a range hood and a method for controlling the zoning of oil fumes. By using a first-stage power unit and a second-stage power unit to drive the first and second rotating baffles on the left and right sides to rotate respectively, the oil fumes in the left and right smoke inlets are purified respectively. The negative pressure range of the negative pressure zone of the smoke inlet of the range hood head can be actively adjusted to prevent the oil fumes from escaping, accurately control the oil fumes, and realize the intelligent absorption and exhaust of oil fumes by the range hood.

[0005] In a first aspect, embodiments of the present invention provide a fume control device for a range hood. The fume inlet area of ​​the range hood includes a left fume inlet and a right fume inlet, which are respectively used to purify the fumes from the left and right cooktops of the range hood. The range hood is provided with a fume inlet chamber. The fume control device is disposed in the fume inlet chamber of the range hood. A first rotating baffle and a second rotating baffle are disposed on the left and right sides of the fume control device. The two first rotating baffles are disposed on the outer side of the fume control device, and the two second rotating baffles are disposed on the inner side of the fume control device. The fume control device is provided with a first-stage power unit and a second-stage power unit, which are respectively used to drive the two first rotating baffles and the two second rotating baffles to rotate. The first-stage power unit and the second-stage power unit are also respectively used to determine the opening angle of the two first rotating baffles and the two second rotating baffles based on the fume concentration of the left and right fume inlets. The opening angle represents the angle between the rotating baffle and the side wall of the fume inlet chamber.

[0006] In an optional embodiment of this application, the first-stage power unit includes a motor and gears, wherein the gears of the first rotating baffle mesh with the gears of the first-stage power unit, and the motor is connected to the gears of the first-stage power unit; the motor drives the gears of the first-stage power unit to rotate the first rotating baffle.

[0007] In an optional embodiment of this application, the second-stage power unit includes: a pneumatic push rod, a slider, a slide groove, and a gear rack. The slider is disposed in the slide groove, and the pneumatic push rod is connected to the slider. The pneumatic push rod controls the slider to reciprocate within the slide groove. A gear rack is fixed on the slider, and the gear rack meshes with a gear on the second rotating baffle. The gear rack drives the gear on the second rotating baffle to rotate the second rotating baffle.

[0008] In an optional embodiment of this application, when the pneumatic push rod extends, it drives the second rotating baffle on the right side to rotate, so as to determine the opening and closing angle of the second rotating baffle on the right side; when the pneumatic push rod retracts, it drives the second rotating baffle on the left side to rotate, so as to determine the opening and closing angle of the second rotating baffle on the left side.

[0009] In an optional embodiment of this application, the smoke inlet chamber is provided with ribs, and the smoke inlet chamber of the range hood is divided into a left smoke inlet and a right smoke inlet by the ribs.

[0010] In an optional embodiment of this application, a smoke baffle is fixed above the smoke inlet of the range hood, and smoke concentration monitors are respectively installed on both sides of the smoke baffle. The smoke concentration monitor on the left side is used to detect the smoke concentration at the left smoke inlet, and the smoke concentration monitor on the right side is used to detect the smoke concentration at the right smoke inlet.

[0011] Secondly, embodiments of the present invention also provide a method for controlling the zoning of oil fumes in a range hood, applied to the aforementioned oil fume control device for a range hood. The method includes: determining the on / off states of the left and right cooktops of the range hood; when the left cooktop of the range hood is on and the right cooktop is off, opening the left smoke inlet of the range hood and closing the right smoke inlet, causing the first and second rotating baffles on the left side to rotate, and determining the opening angle of the first and second rotating baffles on the left side based on the oil fume concentration at the left smoke inlet; when the right cooktop of the range hood is on and the left cooktop is off, opening the left smoke inlet ... to rotate based on the oil fume concentration at the left smoke inlet; when the right cooktop of the range hood is on and the right cooktop is off, opening the left smoke inlet and closing the right smoke inlet, and closing the right smoke inlet and the right smoke inlet to rotate, determining the opening angle of the first and second rotating baffles on the left side; when the right cooktop of the range hood is on and the right cooktop is off, opening the left smoke inlet and closing the right smoke inlet, and closing the right smoke inlet and the right smoke inlet to rotate, determining the opening angle of the first and second rotating baffles on the left side; when the right cooktop of the range hood is on and the right cooktop is off, determining the opening angle of the first and second rotating baffles on the left side; when the right cooktop of the range hood is on and the right cooktop When the cooktop is not turned on, open the right smoke inlet of the range hood and close the left smoke inlet, causing the first and second rotating baffles on the right side to rotate. The opening and closing angles of the first and second rotating baffles on the right side are determined based on the smoke concentration at the right smoke inlet. When both the cooktops on the right and left sides of the range hood are turned on, open the left and right smoke inlets, causing the first and second rotating baffles on the left and right sides to rotate. The opening and closing angles of the first and second rotating baffles on the left and right sides are determined based on the smoke concentration at the left and right smoke inlets.

[0012] In an optional embodiment of this application, the initial opening angle of the first rotating baffle is α0, and the initial opening angle of the second rotating baffle is α0. When the left stove of the range hood is turned on and the right stove is not turned on, the step of determining the opening angle of the first rotating baffle and the second rotating baffle on the left side based on the oil fume concentration at the left smoke inlet includes: if the oil fume concentration at the left smoke inlet is less than or equal to a preset first threshold, determining the opening angle of the first rotating baffle on the left side as α0+γ0 and the opening angle of the second rotating baffle on the left side as α0+δ0; if the oil fume concentration at the left smoke inlet is greater than the first threshold, determining the opening angle of the first rotating baffle on the left side as α0+γ1 and the opening angle of the second rotating baffle on the left side as α0+δ0. The opening angle of the rotating baffle is α0+δ1; where γ1>δ1>γ0>δ0>0; and / or, when the right stove of the range hood is turned on and the left stove is not turned on, the step of determining the opening angle of the first rotating baffle and the second rotating baffle on the right side based on the oil fume concentration at the right smoke inlet includes: if the oil fume concentration at the right smoke inlet is less than or equal to a first threshold, determining the opening angle of the first rotating baffle on the right side as α0+γ0 and the opening angle of the second rotating baffle on the right side as α0+δ0; if the oil fume concentration at the right smoke inlet is greater than the first threshold, determining the opening angle of the first rotating baffle on the right side as α0+γ1 and the opening angle of the second rotating baffle on the right side as α0+δ1.

[0013] In an optional embodiment of this application, when both the right and left cooktops of the range hood are turned on, the step of determining the opening angle of the first and second rotating baffles on the left and right sides based on the oil fume concentrations at the left and right smoke inlets includes: if the average oil fume concentration at the left smoke inlet and the oil fume concentration at the right smoke inlet is less than or equal to a first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m1×γ0, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m2×δ0; if the average oil fume concentration at the left smoke inlet and the oil fume concentration at the right smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m3×γ1, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m4×δ1; wherein, m3>m1>1>m4>m2>0, γ1>δ1>γ0>δ0>0.

[0014] Thirdly, embodiments of the present invention also provide a range hood, the range hood including: the above-mentioned range hood fume control device.

[0015] The embodiments of the present invention bring the following beneficial effects:

[0016] This invention provides a range hood and a method for controlling oil fume zoning. By using a first-stage power unit and a second-stage power unit to drive the first and second rotating baffles on the left and right sides to rotate respectively, the oil fumes in the left and right smoke inlets are purified. The negative pressure range of the negative pressure zone of the smoke inlet of the range hood head can be actively adjusted to prevent oil fumes from escaping, accurately control the oil fumes, and realize intelligent oil fume extraction of the range hood.

[0017] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0018] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the external structure of a range hood provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a range hood provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a range hood fume control device provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of an opening angle provided for an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a first-stage power unit provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a second-stage power unit provided in an embodiment of the present invention;

[0026] Figure 7 This is a flowchart of a method for controlling the oil fume zoning of a range hood, provided as an embodiment of the present invention.

[0027] Icons: 1-Range hood; 2-Cooktop; 3-Fan box; 11-Smoke baffle; 22-Smoke inlet; 33-Fume concentration monitor; 5-Fume control device; 12-Smoke inlet chamber; 51-First rotating baffle; 61-Second rotating baffle; 52-First stage power unit; 62-Second stage power unit; 53-Motor; 54-Gear; 63-Pneumatic push rod; 64-Slider; 65-Slide groove; 66-Gear rack. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Currently, most range hoods on the market use an open "Γ"-shaped smoke collection structure, including a back panel and a top panel. The smoke inlet is located on the back panel near the top panel. Because the back panel is flat, smoke escapes from both sides during exhaust. A common solution is to increase the maximum airflow and static pressure to address this, but given the ventilation conditions in a kitchen, the range hood's smoke extraction and exhaust efficiency is poor in windy conditions.

[0030] Due to factors such as indoor air circulation, cooking fumes can diffuse unpredictably into the surrounding area. Range hoods cannot completely remove all fumes, and some inevitably spreads into the kitchen, causing air pollution. Reducing the amount of fumes entering the kitchen is a crucial issue that needs to be addressed. Currently, the suction inlet of existing range hoods is located behind the cooking pot, with the negative pressure zone far from the center of the cookware. This means the negative pressure zone cannot effectively cover the path of the rising fumes, increasing the likelihood of fumes escaping.

[0031] Therefore, in the existing technology, the smoke inlet of the range hood head is located behind the cooking pot, and the negative pressure zone is far from the center of the cooking pot. This results in the negative pressure zone being unable to effectively cover the path of rising fumes, which increases the possibility of fumes escaping from the side of the range hood.

[0032] Based on this, the present invention provides a range hood and a fume zoning control method, specifically providing a range hood fume control structure and method. The first and second stage power units drive the first and second rotating baffles on the left and right sides to rotate respectively, thereby purifying the fume at the left and right smoke inlets. It can actively adjust the negative pressure range of the negative pressure zone of the smoke inlet of the range hood head to prevent fume escape, accurately control the fume, and realize intelligent fume extraction of the range hood.

[0033] To facilitate understanding of this embodiment, a detailed description of a range hood fume control device disclosed in this embodiment of the invention will be provided first.

[0034] Example 1:

[0035] This invention provides a range hood fume control device that can... Figure 1 The diagram shows the external structure of a range hood. The range hood's smoke inlet area includes a left smoke inlet and a right smoke inlet. The left and right smoke inlets are used to purify the oil fumes from the cooktops on the left and right sides of the range hood, respectively. The range hood is equipped with a smoke inlet chamber.

[0036] like Figure 1 As shown, Figure 1 The diagram shows a range hood 1, a cooktop 2, a fan box 3, a smoke baffle 11, a smoke inlet 22, and a smoke concentration monitor 33. The smoke inlet 22 includes a left smoke inlet and a right smoke inlet, and the cooktop 2 includes a left-side cooktop and a right-side cooktop. In this embodiment, the range hood can be an integrated cooktop or a split-type range hood.

[0037] In some embodiments, the smoke inlet chamber is provided with ribs, and the smoke inlet chamber of the range hood is divided into a left smoke inlet and a right smoke inlet by the ribs.

[0038] like Figure 1As shown, in this embodiment, the smoke inlet chamber of the range hood can be divided into a left smoke inlet and a right smoke inlet by the ribs. The left smoke inlet and the right smoke inlet are responsible for the smoke purification of the left and right cooktops of the range hood, respectively.

[0039] In some embodiments, a smoke baffle is fixed above the smoke inlet of the range hood, and smoke concentration monitors are respectively installed on both sides of the smoke baffle. The smoke concentration monitor on the left side is used to detect the smoke concentration at the left smoke inlet, and the smoke concentration monitor on the right side is used to detect the smoke concentration at the right smoke inlet.

[0040] like Figure 1 As shown, a smoke baffle 11 can be fixed above the smoke inlet chamber of the range hood 1. Oil fume concentration monitors 33 are set on both sides of the smoke baffle 11. The oil fume concentration monitors 33 on both sides monitor the smoke escape on both sides of the smoke baffle, that is, they detect the oil fume concentration at the left smoke inlet and the right smoke inlet respectively.

[0041] Based on the above description, see Figure 2 The diagram shows the internal structure of a range hood and Figure 3 The diagram shows a structural schematic of a fume control device for a range hood. The fume control device 5 is installed in the fume inlet chamber 12 of the range hood. A first rotating baffle 51 and a second rotating baffle 61 are provided on the left and right sides of the fume control device 5. The two first rotating baffles 51 are located on the outside of the fume control device 5, and the two second rotating baffles 61 are located on the inside of the fume control device 5.

[0042] like Figure 3 As shown, the fume control device 5 is equipped with a first-stage power unit 52 and a second-stage power unit 62. The first-stage power unit 52 and the second-stage power unit 62 are used to drive the two first rotating baffles 51 and the two second rotating baffles 61 to rotate, respectively.

[0043] like Figure 3 As shown, in this embodiment, two first-stage power units 52 and one second-stage power unit 62 can be set. The two first-stage power units 52 can drive the two first rotating baffles 51 to rotate, and the one second-stage power unit 62 can drive the two second rotating baffles 61 to rotate.

[0044] The first-stage power unit and the second-stage power unit are also used to determine the opening and closing angles of the two first rotating baffles and the two second rotating baffles based on the oil fume concentrations at the left and right smoke inlets, respectively; the opening and closing angles characterize the angle between the rotating baffles and the sidewalls of the smoke inlet chamber.

[0045] like Figure 1As shown, the oil fume concentration monitor 33 installed on the left side of the smoke baffle 11 can detect the oil fume concentration at the left smoke inlet, and the oil fume concentration monitor 33 installed on the right side of the smoke baffle 11 can detect the oil fume concentration at the right smoke inlet.

[0046] Therefore, as Figure 3 As shown, the two first-stage power units 52 can determine the opening and closing angles of the first rotating baffles 51 on the left and right sides based on the oil fume concentrations at the left and right smoke inlets, respectively. The one second-stage power unit 62 can determine the opening and closing angles of the second rotating baffles 61 on the left and right sides based on the oil fume concentrations at the left and right smoke inlets, respectively.

[0047] For the concept of the opening angle mentioned above, please refer to [link to relevant documentation]. Figure 4 The diagram shows an opening and closing angle. The angle between the first rotating baffle 51 and the side wall of the smoke inlet chamber 12 is α, that is, the opening and closing angle of the first rotating baffle 51 is α; the angle between the second rotating baffle 61 and the side wall of the smoke inlet chamber 12 is β, that is, the opening and closing angle of the second rotating baffle 61 is β.

[0048] For the specific structure of the first-stage power unit, please refer to [link / reference]. Figure 5 The diagram shows a structural schematic of a first-stage power unit. In some embodiments, the first-stage power unit includes a motor 53 and a gear 54. The gear of the first rotating baffle 51 meshes with the gear 54 of the first-stage power unit 52. The motor 53 is connected to the gear 54 of the first-stage power unit 52. The motor 53 drives the gear 54 to rotate the first rotating baffle 51.

[0049] For the specific structure of the second-stage power unit, please refer to [link / reference]. Figure 6 The diagram shows a structural schematic of a second-stage power unit. In some embodiments, the second-stage power unit includes: a pneumatic push rod 63, a slider 64, a slide groove 65, and a gear rack 66. The slider 64 is disposed in the slide groove 65, and the pneumatic push rod 63 is connected to the slider 64. The pneumatic push rod 63 controls the slider 64 to reciprocate within the slide groove 65. The gear rack 66 is fixed on the slider 64, and the gear rack 66 meshes with a gear on the second rotating baffle 61. The gear rack 66 drives the gear on the second rotating baffle 61 to rotate the second rotating baffle 61.

[0050] In this embodiment, one second-stage power unit can drive two second rotating baffles to rotate. For example... Figure 6 As shown, when the pneumatic push rod 63 extends, it drives the second rotating baffle 61 on the right to rotate, thereby determining the opening and closing angle of the second rotating baffle 61 on the right, that is, adjusting the angle between the second rotating baffle on the right and the side wall of the smoke inlet chamber; when the pneumatic push rod 63 retracts, it drives the second rotating baffle 61 on the left to rotate, thereby determining the opening and closing angle of the second rotating baffle 61 on the left, that is, adjusting the angle between the second rotating baffle on the left and the side wall of the smoke inlet chamber.

[0051] This invention provides a fume control device for a range hood. A first-stage power unit and a second-stage power unit drive the first and second rotating baffles on the left and right sides to rotate, thereby purifying the fumes at the left and right smoke inlets. The device can actively adjust the negative pressure range of the smoke inlet negative pressure zone of the range hood head to prevent fumes from escaping, accurately control the fumes, and realize intelligent fume extraction of the range hood.

[0052] Example 2:

[0053] This invention provides a method for zoned control of oil fumes in a range hood, applicable to the oil fume control device of the range hood provided in the aforementioned embodiments. See also... Figure 7 The flowchart shown illustrates a method for controlling the zoning of oil fumes in a range hood. This method includes the following steps:

[0054] Step S702: Determine the on / off status of the left and right cooktops of the range hood.

[0055] First, in the initial state, the baffle positions can be initialized, that is, the opening angle of the first rotating baffle and the second rotating baffle can be initialized to α0. The stove is then turned on, and the on / off status of the left and right stoves is identified. In this embodiment, the stove's on / off status can be divided into three states: only the left stove is on, only the right stove is on, and both the left and right stoves are on simultaneously. In each of these three states, a smoke concentration monitor is activated to monitor the oil fume concentration. Control is then performed based on the smoke concentration at the sides.

[0056] In this embodiment, a first threshold a1 can be set, which can be divided into two levels: less than or equal to the first threshold a1 (i.e., 0-a1) and greater than the first threshold a1 (i.e., >a1). When the side oil fume concentration monitor detects oil fumes escaping from the side, the oil fume control device can be activated.

[0057] Step S704: When the left burner of the range hood is turned on and the right burner is not turned on, open the left smoke inlet of the range hood and close the right smoke inlet of the range hood, causing the first and second rotating baffles on the left to rotate. Determine the opening and closing angle of the first and second rotating baffles on the left based on the smoke concentration at the left smoke inlet.

[0058] When the stove is in the "only left side" mode, the left smoke inlet of the range hood can be opened and the right smoke inlet can be closed, causing the first and second rotating baffles on the left side to rotate. The opening and closing angles of the first and second rotating baffles on the left side are determined based on the smoke concentration detected by the smoke concentration monitor on the left side.

[0059] In some embodiments, if the oil fume concentration at the left smoke inlet is less than or equal to a preset first threshold, the opening angle of the first rotating baffle on the left is determined to be α0+γ0, and the opening angle of the second rotating baffle on the left is determined to be α0+δ0; if the oil fume concentration at the left smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the left is determined to be α0+γ1, and the opening angle of the second rotating baffle on the left is determined to be α0+δ1; wherein, γ1>δ1>γ0>δ0>0;

[0060] When the left-side stove is turned on, the fume control device can close the right-side baffle of the right smoke inlet; adjust the opening angle of the first and second rotating baffles on the left: if the fume concentration at the left smoke inlet is 0-a1, the opening angle of the first rotating baffle on the left is α0+γ0, and the opening angle of the second rotating baffle on the left is α0+δ0; if the fume concentration at the left smoke inlet is >a1, the opening angle of the first rotating baffle on the left is α0+γ1, and the opening angle of the second rotating baffle on the left is α0+δ1, (γ1>δ1>γ0>δ0>0).

[0061] In order to solve the problem of smoke escaping from the side, in this embodiment, the opening angle (α0+γ1) of the first rotating baffle can be set to be greater than the opening angle (α0+δ1) of the second rotating baffle.

[0062] Step S706: When the right burner of the range hood is turned on and the left burner is not turned on, the right smoke inlet of the range hood is turned on and the left smoke inlet of the range hood is turned off, causing the first and second rotating baffles on the right to rotate. The opening and closing angles of the first and second rotating baffles on the right are determined based on the smoke concentration at the right smoke inlet.

[0063] When the stove is in the "only right stove is on" state, the right smoke inlet of the range hood can be opened and the left smoke inlet of the range hood can be closed, which will cause the first and second rotating baffles on the right to rotate. The opening and closing angle of the first and second rotating baffles on the right is determined based on the smoke concentration detected by the smoke concentration monitor on the right.

[0064] In some embodiments, if the oil fume concentration at the right smoke inlet is less than or equal to a first threshold, the opening angle of the first rotating baffle on the right is determined to be α0+γ0, and the opening angle of the second rotating baffle on the right is determined to be α0+δ0; if the oil fume concentration at the right smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the right is determined to be α0+γ1, and the opening angle of the second rotating baffle on the right is determined to be α0+δ1.

[0065] When the right-side stove is turned on, the fume control device can close the left side baffle of the left smoke inlet; adjust the opening angle of the first and second rotating baffles on the right: if the fume concentration at the right smoke inlet is 0-a1, the opening angle of the first rotating baffle on the right is α0+γ0, and the opening angle of the second rotating baffle on the right is α0+δ0; if the fume concentration at the right smoke inlet is >a1, the opening angle of the first rotating baffle on the right is α0+γ1, and the opening angle of the second rotating baffle on the right is α0+δ1, (γ1>δ1>γ0>δ0>0).

[0066] Similarly, in order to solve the problem of smoke escaping from the side, in this embodiment, the opening angle (α0+γ1) of the first rotating baffle can be set to be greater than the opening angle (α0+δ1) of the second rotating baffle.

[0067] Step S708: When both the right and left cooktops of the range hood are turned on, the left and right smoke inlets of the range hood are turned on, causing the first and second rotating baffles on the left and right sides to rotate. The opening and closing angles of the first and second rotating baffles on the left and right sides are determined based on the smoke concentration at the left and right smoke inlets.

[0068] When the stove is turned on with both the left and right stoves on, the right and left smoke inlets of the range hood can be turned on simultaneously, causing the first and second rotating baffles on the left and right sides to rotate. The opening angle of the first and second rotating baffles on the right side is determined based on the smoke concentration detected by the smoke concentration monitors on the left and right sides.

[0069] In some embodiments, if the average oil fume concentration of the left smoke inlet and the oil fume concentration of the right smoke inlet is less than or equal to a first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m1×γ0, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m2×δ0; if the average oil fume concentration of the left smoke inlet and the oil fume concentration of the right smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m3×γ1, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m4×δ1; wherein, m3>m1>1>m4>m2>0, γ1>δ1>γ0>δ0>0.

[0070] When the left and right stoves are turned on simultaneously, the fume control device adjusts the opening angles of the first and second rotating baffles on the left and right sides. When the average fume concentration at the left and right smoke inlets is 0-a1, the opening angles of the first rotating baffles on both sides can be α0+m1×γ0. The opening angles of the second rotating baffles on both sides can be α0+m2×δ0. When the average fume concentration at the left and right smoke inlets is >a1, the opening angles of the first rotating baffles on both sides can be α0+m3×γ1, and the opening angles of the second rotating baffles on both sides can be α0+m4×δ1 (m3>m1>1>m4>m2>0, γ1>δ1>γ0>δ0>0).

[0071] This invention provides a method for controlling the zoning of oil fumes in a range hood. By using a first-stage power unit and a second-stage power unit to drive the first and second rotating baffles on the left and right sides to rotate respectively, the oil fumes in the left and right smoke inlets are purified separately. This method can actively adjust the negative pressure range of the negative pressure zone of the smoke inlet of the range hood head, prevent oil fumes from escaping, accurately control the oil fumes, and realize intelligent oil fume extraction of the range hood.

[0072] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the oil fume zoning control method of the range hood described above can be referred to the corresponding process in the aforementioned embodiments of the oil fume control device for the range hood, and will not be repeated here.

[0073] Example 3:

[0074] This invention also provides a range hood, such as... Figure 1 As shown, the range hood 1 includes: the fume control device 5 of the range hood in the aforementioned embodiment.

[0075] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the range hood described above can be referred to the corresponding process in the aforementioned embodiments of the range hood's fume control device, and will not be repeated here.

[0076] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0077] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0078] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A range hood, characterized in that, The range hood includes a fume control device, and the fume inlet area of ​​the range hood includes a left fume inlet and a right fume inlet. The left fume inlet and the right fume inlet are respectively used to purify the fumes of the cooktop on the left and right sides of the range hood. The range hood is provided with a fume inlet chamber. The fume control device of the range hood is installed in the fume inlet chamber of the range hood. A first rotating baffle and a second rotating baffle are provided on the left and right sides of the fume control device. The two first rotating baffles are all located on the side away from the fume control device, and the two second rotating baffles are all located on the side close to the fume control device. The fume control device is equipped with a first-stage power unit and a second-stage power unit, which are used to drive the two first rotating baffles and the two second rotating baffles to rotate, respectively. The first-stage power unit and the second-stage power unit are also used to determine the opening and closing angles of the two first rotating baffles and the two second rotating baffles based on the oil fume concentration of the left smoke inlet and the right smoke inlet, respectively; the opening and closing angles represent the angle between the rotating baffles and the sidewall of the smoke inlet chamber.

2. The range hood according to claim 1, characterized in that, The first stage power unit includes a motor and gears. The gears of the first rotating baffle mesh with the gears of the first stage power unit, and the motor is connected to the gears of the first stage power unit. The motor drives the gears of the first stage power unit to rotate the first rotating baffle.

3. The range hood according to claim 1, characterized in that, The second-stage power unit includes: a pneumatic push rod, a slider, a slide groove, and a gear rack. The slider is disposed in the slide groove, and the pneumatic push rod is connected to the slider. The pneumatic push rod controls the slider to reciprocate within the slide groove. The gear rack is fixed on the slider, and the gear rack meshes with a gear on the second rotating baffle. The gear rack drives the gear on the second rotating baffle to rotate the second rotating baffle.

4. The range hood according to claim 3, characterized in that, When the pneumatic push rod extends, it drives the second rotating baffle on the right side to rotate, thereby determining the opening and closing angle of the second rotating baffle on the right side; when the pneumatic push rod retracts, it drives the second rotating baffle on the left side to rotate, thereby determining the opening and closing angle of the second rotating baffle on the left side.

5. The range hood according to claim 1, characterized in that, The smoke inlet chamber is provided with ribs, and the smoke inlet chamber of the range hood is divided into the left smoke inlet and the right smoke inlet by the ribs.

6. The range hood according to claim 1, characterized in that, A smoke baffle is fixed above the smoke inlet of the range hood. Smoke concentration monitors are installed on both sides of the smoke baffle. The smoke concentration monitor on the left side is used to detect the smoke concentration at the left smoke inlet, and the smoke concentration monitor on the right side is used to detect the smoke concentration at the right smoke inlet.

7. A method for controlling the zoning of oil fumes in a range hood, characterized in that, The method, applied to the range hood according to any one of claims 1-6, comprises: Determine the on / off status of the left and right cooktops of the range hood; When the left burner of the range hood is turned on and the right burner is not turned on, the left smoke inlet of the range hood is opened and the right smoke inlet of the range hood is closed, which drives the first and second rotating baffles on the left to rotate. The opening and closing angle of the first and second rotating baffles on the left is determined based on the smoke concentration at the left smoke inlet. When the right stove of the range hood is turned on and the left stove is not turned on, the right smoke inlet of the range hood is opened and the left smoke inlet of the range hood is closed, which drives the first and second rotating baffles on the right side to rotate. The opening and closing angle of the first and second rotating baffles on the right side is determined based on the smoke concentration of the right smoke inlet. When both the right and left cooktops of the range hood are turned on, the left and right smoke inlets of the range hood are opened, causing the first and second rotating baffles on the left and right sides to rotate. The opening and closing angles of the first and second rotating baffles on the left and right sides are determined based on the smoke concentration at the left and right smoke inlets.

8. The method according to claim 7, characterized in that, The initial opening angle of the first rotating baffle is α0, and the initial opening angle of the second rotating baffle is α0; When the left cooktop of the range hood is on and the right cooktop is off, the step of determining the opening angle of the first and second rotating baffles on the left side based on the oil fume concentration at the left smoke inlet includes: If the oil fume concentration at the left smoke inlet is less than or equal to a preset first threshold, the opening angle of the first rotating baffle on the left is determined to be α0+γ0, and the opening angle of the second rotating baffle on the left is determined to be α0+δ0. If the oil fume concentration at the left smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the left is determined to be α0+γ1, and the opening angle of the second rotating baffle on the left is determined to be α0+δ1; where γ1>δ1>γ0>δ0>0. And / or, when the right-side cooktop of the range hood is on and the left-side cooktop is not on, the step of determining the opening angle of the first and second rotating baffles on the right side based on the oil fume concentration at the right smoke inlet includes: If the oil fume concentration at the right smoke inlet is less than or equal to the first threshold, the opening angle of the first rotating baffle on the right side is determined to be α0+γ0, and the opening angle of the second rotating baffle on the right side is determined to be α0+δ0. If the oil fume concentration at the right smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the right side is determined to be α0+γ1, and the opening angle of the second rotating baffle on the right side is determined to be α0+δ1; where γ1>δ1>γ0>δ0>0.

9. The method according to claim 8, characterized in that, When both the right and left cooktops of the range hood are turned on, the step of determining the opening angle of the first and second rotating baffles on the left and right sides based on the oil fume concentration at the left and right smoke inlets includes: If the average value of the oil fume concentration at the left smoke inlet and the oil fume concentration at the right smoke inlet is less than or equal to the first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m1×γ0, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m2×δ0. If the average oil fume concentration of the left smoke inlet and the oil fume concentration of the right smoke inlet is greater than the first threshold, the opening angle of the first rotating baffle on the left / right side is determined to be α0+m3×γ1, and the opening angle of the second rotating baffle on the left / right side is determined to be α0+m4×δ1; where m3>m1>1>m4>m2>0, γ1>δ1>γ0>δ0>0.

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