A range hood, control method, control device, and storage medium

Abstract

The application discloses a range hood, a control method, a control device and a storage medium. The control method comprises the following steps: detecting the first temperature of the range in real time in the standby state; obtaining the first temperature change rate according to the first temperature of the range; controlling whether the range hood is switched to the start state according to the first temperature and the first temperature change rate; detecting the second temperature of the range in real time in the start state; obtaining the second temperature change rate according to the second temperature of the range; and controlling the working state of the range hood according to the second temperature and the second temperature change rate. The control method detects the temperature of the range in different states of the range hood, and calculates the temperature change rate to assist in accurately judging whether there is cooking behavior, and then controls the range hood and the working gear of the range hood, realizes the accurate intelligent control of the switching of the working state of the range hood, facilitates the use of the user, maintains the health of the user, and improves the life quality of the user.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a range hood, control method, control device, and storage medium. Background Technology

[0002] Common kitchen appliances such as range hoods and integrated stoves have smoke extraction functions. Their smoke extraction principle is based on aerodynamics. The motor drives the impeller to rotate, which expels the air inside the volute and creates negative pressure. Atmospheric pressure then draws the air in the kitchen space, carrying the fumes, into the air inlet, and then exhausts the fumes outdoors through the duct and exhaust pipe.

[0003] Most range hoods on the market today achieve intelligent on / off switching and speed adjustment through the linkage between the range hood and the cooktop. The range hood and cooktop generally communicate via Bluetooth or wireless radio frequency. The cooktop sends the heat information to the range hood, and the range hood uses this information to turn on, adjust the speed, or turn off. Through these methods, fully automatic control of the range hood can be achieved.

[0004] However, the problem is that a matching stove is required to achieve the above effects. Furthermore, since the kitchen is not only affected by the stove burner ignition, which generates temperature changes, other appliances such as rice cookers and kettles may also be present. If a user carries hot food or boiling water and passes by or stops in front of the stove panel, the range hood sensor may detect that the temperature has risen above the set temperature. However, if the user has not turned on the stove to cook, the range hood may start erroneously, resulting in a poor user experience of the smart system. Summary of the Invention

[0005] This invention provides a range hood, a control method, a control device, and a storage medium. The control method detects the stove temperature under different conditions of the range hood and calculates the temperature change rate to accurately determine whether cooking is taking place. It then controls the range hood and its operating level, achieving precise and intelligent control of the range hood's operating state switching. This facilitates user use, protects user health, and improves user quality of life.

[0006] According to one aspect of the present invention, a control method for a range hood is provided. The range hood includes an air guide plate, a first detection component, and a second detection component; the first detection component and the second detection component are respectively located in the spaces on opposite sides of the air guide plate.

[0007] When the air guide plate is in the closed state, it blocks the space between the second detection component and the cooktop; when the air guide plate is in the open state, it blocks the space between the first detection component and the cooktop.

[0008] The control method includes:

[0009] In standby mode, the first temperature of the stove is detected in real time using the first detection component;

[0010] Based on the real-time detected first temperature of the stove, calculate the rate of change of the first temperature over time to obtain the first temperature change rate;

[0011] Based on the first temperature and the first temperature change rate, the range hood is controlled to switch from standby mode to on mode; wherein, in standby mode, the air guide plate is closed; in on mode, the air guide plate is open.

[0012] When the appliance is powered on, the second detection component is used to detect the second temperature of the stove in real time.

[0013] Based on the real-time detected second temperature of the stove, calculate the rate of change of the second temperature over time to obtain the rate of change of the second temperature;

[0014] Based on the second temperature and the second temperature change rate, control the working level of the range hood and whether the range hood switches from the on state to the standby state.

[0015] Optionally, based on a first temperature and a first temperature change rate, control whether the range hood switches from standby mode to on mode, including:

[0016] When the cooktop is in the first temperature range, the range hood is kept in standby mode.

[0017] When the first temperature of the stove is in the second temperature range, the range hood is controlled to switch from standby mode to on mode based on the first temperature change rate.

[0018] The temperature values ​​in the first temperature range are lower than those in the second temperature range.

[0019] Optionally, based on the first temperature change rate, control whether the range hood switches from standby mode to on mode, including:

[0020] When the first temperature change rate is within the first change rate range, the range hood is controlled to remain in standby mode;

[0021] When the first temperature change rate is within the second change rate range, the range hood is switched from standby mode to on mode.

[0022] The rate of change within the first rate of change interval is less than the rate of change within the second rate of change interval.

[0023] Optionally, based on the real-time detected first temperature of the stove, the rate of change of the first temperature over time is calculated to obtain the first temperature change rate, including:

[0024] The first temperature change rate δ1 is calculated according to the temperature change rate formula δ1=(T1'-T1) / t1; where T1 and T1' are two first temperature values ​​of the stove obtained by the first detection component in sequence at a first preset time interval t1.

[0025] Optionally, the second detection component includes a first infrared temperature sensor and a second infrared temperature sensor, and the stove includes a first burner and a second burner; the first infrared temperature sensor faces the first burner, and the second infrared temperature sensor faces the second burner; the second temperature includes the temperature of the first burner and the temperature of the second burner.

[0026] When the appliance is powered on, the second detection component is used to detect the second temperature of the stove in real time, including:

[0027] When the machine is powered on, the temperature of the first burner head is detected in real time using the first infrared temperature sensor, and the temperature of the second burner head is detected in real time using the second infrared temperature sensor.

[0028] Based on the real-time monitored second temperature of the stove, the rate of change of the second temperature over time is calculated to obtain the rate of change of the second temperature, including:

[0029] Based on the real-time detected temperature of the first burner head, the rate of change of the temperature of the first burner head over time is calculated to obtain the rate of change of the temperature of the first burner head.

[0030] Based on the real-time monitored temperature of the second burner head, the rate of change of the temperature of the second burner head over time is calculated to obtain the rate of change of the temperature of the second burner head.

[0031] Based on the second temperature and the second temperature change rate, control the operating level of the range hood and whether the range hood switches from the on state to the standby state, including:

[0032] Based on the temperature of the first burner head, the temperature of the second burner head, and the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled.

[0033] Optionally, the temperature range includes a third temperature range and a fourth temperature range, where the temperature value in the third temperature range is lower than the temperature value in the fourth temperature range.

[0034] Based on the temperatures of the first and second burners, as well as the rate of change of the first and second burner temperatures, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled, including:

[0035] When both the first burner temperature and the second burner temperature are in the third temperature range, the range hood is switched from the on state to the standby state.

[0036] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, the operating level of the range hood is controlled according to the temperature change rate of the first burner head and / or the temperature change rate of the second burner head.

[0037] Optionally, when the temperature of the first burner and / or the second burner reaches the fourth temperature range, the operating level of the range hood is controlled according to the temperature change rate of the first burner and / or the temperature change rate of the second burner, including:

[0038] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head are both within the first rate of change range, the range hood is switched to standby mode.

[0039] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, the range hood is controlled to operate at the range hood speed corresponding to the temperature sub-range where the temperature of the first burner head and / or the temperature of the second burner head that reaches the fourth temperature range is located.

[0040] The rate of change within the first rate of change interval is less than the rate of change within the second rate of change interval.

[0041] Optionally, the range hood has three speed settings: a first speed setting, a second speed setting, and a third speed setting; the operating power of the first speed setting, the second speed setting, and the third speed setting increases sequentially.

[0042] The fourth temperature range includes the first temperature sub-range, the second temperature sub-range, and the third temperature sub-range; the temperature values ​​of the first temperature sub-range, the second temperature sub-range, and the third temperature sub-range increase sequentially.

[0043] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are within the second rate of change range, the range hood is controlled to operate at the range hood setting corresponding to the temperature sub-range where the temperature of the first burner head and / or the temperature of the second burner head that has reached the fourth temperature range is located, including:

[0044] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the first temperature sub-range, the range hood is controlled to operate at the first gear.

[0045] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the second temperature sub-range, control the range hood to operate at the second setting.

[0046] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the third temperature sub-range, the range hood is controlled to operate at the third setting.

[0047] Optionally, based on the real-time detected temperature of the first burner head, the rate of change of the first burner head temperature over time is calculated to obtain the rate of change of the first burner head temperature, including:

[0048] The temperature change rate δ21 is calculated according to the temperature change rate formula δ21=(T21'-T21) / t2; where T21 and T21' are two first furnace head temperature values ​​obtained by the first infrared temperature sensor in sequence at a second preset time interval t2.

[0049] Based on the real-time monitored temperature of the second burner head, the rate of change of the second burner head temperature over time is calculated to obtain the rate of change of the second burner head temperature, including:

[0050] The temperature change rate δ22 is calculated according to the temperature change rate formula δ22=(T22'-T22) / t2; where T22 and T22' are two second burner temperature values ​​obtained by the second infrared temperature sensor in sequence at the second preset time interval t2.

[0051] Optionally, the first temperature range and the third temperature range are the same, and the second temperature range and the fourth temperature range are the same.

[0052] According to another aspect of the present invention, a control device for a range hood is provided. The range hood includes an air guide plate, a first detection component, and a second detection component. The first detection component and the second detection component are respectively located in the space on opposite sides of the air guide plate. When the air guide plate is in the closed state, the air guide plate blocks the space between the first detection component and the cooktop. When the air guide plate is in the open state, the air guide plate blocks the space between the second temperature measuring component and the cooktop.

[0053] The control device includes:

[0054] The first temperature measuring module is used to detect the first temperature of the stove using the first detection component in standby mode;

[0055] The first rate of change calculation module is used to calculate the rate of change of the first temperature over time based on the first temperature of the stove detected in real time, and to obtain the first temperature change rate.

[0056] The status control module is used to control whether the range hood switches from standby mode to on mode based on the first temperature and the first temperature change rate; wherein, in standby mode, the air guide plate is closed; in on mode, the air guide plate is open.

[0057] The second temperature measurement module is used to detect the second temperature of the stove using the second detection component when the stove is powered on.

[0058] The second rate of change calculation module is used to calculate the rate of change of the second temperature over time based on the real-time detected second temperature of the stove, and obtain the second temperature change rate.

[0059] The state switching module is also used to control the working level of the range hood and whether the range hood switches from the on state to the standby state based on the second temperature of the stove.

[0060] Optionally, the range hood also includes a smoke collection assembly; the air guide plate is connected to the smoke collection assembly and can switch between a closed state and an open state;

[0061] The first detection component and the second detection component are both mounted on the air guide plate and are located on opposite sides of the air guide plate. The detection area of ​​the first detection component faces the outside of the air guide plate, and the detection area of ​​the second detection component faces the inside of the air guide plate.

[0062] In the closed state, the air guide plate is in the closed position, and the first detection component can detect whether the stove in the detection area is ignited; in the open state, the air guide plate flips forward, and the second detection component can detect whether the stove in the detection area is turned off.

[0063] Optionally, the range hood also includes a smoke collection assembly; the air guide plate is connected to the smoke collection assembly and can switch between a closed state and an open state;

[0064] The first detection component is set on the smoke collection component or the air guide plate. When the air guide plate is closed, the air guide plate is in the closed position that does not block the first detection component. The first detection component can obtain whether the stove in the detection area is ignited.

[0065] The second detection component is located on the smoke collection assembly or the air guide plate; when the air guide plate is in the open state, the air guide plate flips forward, and the second detection component can obtain whether the stove in the detection area is turned off.

[0066] According to another aspect of the present invention, a range hood is provided, characterized in that the range hood comprises:

[0067] At least one processor; and

[0068] A memory that is communicatively connected to at least one processor; wherein,

[0069] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the control method of the range hood according to any one of the present invention.

[0070] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the control method of a range hood according to any embodiment of the present invention.

[0071] This invention provides a control method for a range hood, wherein the range hood includes an air guide plate, a first detection component, and a second detection component; the first detection component and the second detection component are respectively located in opposite spaces on both sides of the air guide plate; when the air guide plate is in a closed state, the air guide plate blocks the space between the second detection component and the cooktop; when the air guide plate is in an open state, the air guide plate blocks the space between the first detection component and the cooktop; the control method includes: in a standby state, using the first detection component to detect a first temperature of the cooktop in real time; calculating the rate of change of the first temperature over time based on the real-time detected first temperature of the cooktop, and obtaining a first temperature change rate; controlling whether the range hood switches from a standby state to an on state based on the first temperature and the first temperature change rate; in the on state, using the second detection component to detect a second temperature of the cooktop in real time; calculating the rate of change of the second temperature over time based on the real-time detected second temperature of the cooktop, and obtaining a second temperature change rate; controlling the working level of the range hood and whether the range hood switches from an on state to a standby state based on the second temperature and the second temperature change rate. This control method detects the stove temperature using a first and a second detection component, and uses the first and second temperature change rates to help determine whether cooking is taking place. This allows for precise and intelligent control of the range hood's on / off and standby states to filter cooking fumes. Furthermore, the first detection component detects the stove temperature when the range hood is in standby mode, controlling whether to switch it to on mode. The second detection component detects the stove temperature when the range hood is on, controlling whether to switch it to standby mode without affecting the fume extraction effect. This refined control method allows for intelligent and free switching between different range hood states, improving user convenience, intelligently detecting the environment, protecting user health, and enhancing their quality of life.

[0072] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0073] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0074] Figure 1 This is a front view showing the positional relationship between the first and second detection components;

[0075] Figure 2 yes Figure 1 Side view of the structure shown;

[0076] Figure 3 This is another front view showing the positional relationship between the first and second detection components;

[0077] Figure 4 yes Figure 3 The side view of the structure shown is in standby mode;

[0078] Figure 5 This is a flowchart of a control method for a range hood provided in an embodiment of the present invention;

[0079] Figure 6 This is a flowchart of another control method for a range hood provided in an embodiment of the present invention;

[0080] Figure 7 This is a flowchart of another control method for a range hood provided in an embodiment of the present invention;

[0081] Figure 8 This is a flowchart of another control method for a range hood provided in an embodiment of the present invention;

[0082] Figure 9 This is a schematic diagram of the structure of a control device for a range hood provided in an embodiment of the present invention;

[0083] Figure 10 This is a structural block diagram of a range hood provided in an embodiment of the present invention.

[0084] in:

[0085] 100. Casing; 200. Stove; 201. First burner; 202. Second burner;

[0086] 10. Smoke collection assembly; 11. Fixed smoke collection hood; 12. Air guide plate; 13. Movable smoke collection hood; 101. Smoke collection chamber;

[0087] 20. First detection component; 30. Second detection component. Detailed Implementation

[0088] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0089] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0090] Figure 1 This is a front view showing the positional relationship between the first and second detection components. Figure 2 yes Figure 1 The side view of the structure shown. Figure 3 This is another front view showing the positional relationship between the first and second detection components. Figure 4 yes Figure 3 The shown is a side view of the structure in standby mode. Figure 5 This is a flowchart of a control method for a range hood provided in an embodiment of the present invention, such as... Figures 1-5 As shown, the range hood includes an air guide plate 12, a first detection component 20, and a second detection component 30; the first detection component 20 and the second detection component 30 are respectively located in the spaces on opposite sides of the air guide plate 12.

[0091] When the air guide plate 12 is in the closed state, the air guide plate 12 blocks the space between the second detection component 30 and the stove 200; when the air guide plate 12 is in the open state, the air guide plate 12 blocks the space between the first detection component 20 and the stove 200.

[0092] The control method includes:

[0093] In standby mode, the first temperature of the stove is detected in real time using the first detection component;

[0094] Based on the real-time detected first temperature of the stove, calculate the rate of change of the first temperature over time to obtain the first temperature change rate;

[0095] Based on the first temperature and the first temperature change rate, the range hood is controlled to switch from standby mode to on mode; wherein, in standby mode, the air guide plate is closed; in on mode, the air guide plate is open.

[0096] When the appliance is powered on, the second detection component is used to detect the second temperature of the stove in real time.

[0097] Based on the real-time detected second temperature of the stove, calculate the rate of change of the second temperature over time to obtain the rate of change of the second temperature;

[0098] Based on the second temperature and the second temperature change rate, control the working level of the range hood and whether the range hood switches from the on state to the standby state.

[0099] like Figure 1 and Figure 2 As shown, the range hood also includes a smoke collection assembly 10; the air guide plate 12 is connected to the smoke collection assembly 10 and can switch between a closed state and an open state;

[0100] The first detection component 20 is disposed on the smoke collection component 10 or the air guide plate 12. When the air guide plate 12 is in the closed state, the air guide plate 12 is in the closed position that does not block the first detection component 20. The first detection component 20 can obtain whether the stove 200 in the detection area is ignited.

[0101] The second detection component 30 is disposed on the smoke collection component 10 or the air guide plate 12; when the air guide plate 12 is in the open state, the air guide plate 12 flips forward, and the second detection component 30 can obtain whether the stove 200 in the detection area is turned off.

[0102] Specifically, the smoke collection assembly 10 includes a fixed smoke collection hood 11 and a movable smoke collection hood 13, which are movably connected to the fixed smoke collection hood 11. In the open state, the movable smoke collection hood 13 flips forward and protrudes from the front side of the fixed smoke collection hood 11. The air guide plate 12 is movably connected to either the fixed smoke collection hood 11 or the movable smoke collection hood 13. The fixed smoke collection hood 11 provides support for the movable smoke collection hood 13 and the air guide plate 12. In the closed state, the movable smoke collection hood 13 is located inside the fixed smoke collection hood 11, and at least part of the air guide plate 12 covers the movable smoke collection hood 13, resulting in a neat appearance and strong integration. When switching from the closed state to the open state, the air guide plate 12 flips forward, and the movable smoke collection hood 13 flips forward and protrudes from the front side of the fixed smoke collection hood 11. The air guide plate 12, the movable smoke collection hood 13, and the fixed smoke collection hood 11 form a smoke collection chamber 101.

[0103] In this embodiment, one air guide plate 12 is provided. At least a portion of the air guide plate 12 covers the movable smoke hood 13; either the air guide plate 12 can completely cover the movable smoke hood 13, or only a portion of the air guide plate 12 can cover the movable smoke hood 13. In other embodiments, two or more air guide plates 12 may be provided. When two or more air guide plates 12 are provided, at least one air guide plate 12 may cover the movable smoke hood 13, while the remaining air guide plates 12 may not cover the movable smoke hood 13.

[0104] It should be noted that the air guide plate 12 covers the movable smoke hood 13, which may completely cover the movable smoke hood 13 or only partially cover it.

[0105] In the off state, the first detection component 20 can detect whether the stove 200 is ignited; in the on state, the second detection component 30 can detect whether the stove 200 is turned off. The first detection component 20 and the second detection component 30 work together to obtain the status of the stove 200 in the detection area, whether it is in the off state or the on state, without being affected by the rotation angle of the air guide plate 12, taking into account both intelligent detection and a large smoke collection chamber 101.

[0106] Typically, kitchen appliances are mounted on the wall, with the cooktop 200 located below the smoke collection chamber 101. When opened, the movable smoke collection hood 13 flips forward and protrudes from the front of the fixed smoke collection hood 11, bringing it closer to the cooktop 200 and improving smoke extraction. Since the second detection component 30 can detect the cooktop 200 when open, the air guide plate 12 can open at a larger angle to create a larger smoke collection chamber 101, further enhancing smoke extraction.

[0107] By placing the first detection component 20 at the bottom of the housing 100, in the closed state, the air guide plate 12 covers the movable smoke collection hood 13 and does not obstruct the first detection component 30 from detecting the cooktop 200 within the detection area. In the open state, even if the air guide plate 12 obstructs the first detection component 30, the status of the cooktop 200 within the detection area can still be detected by the second detection component 30, thus not affecting the detection.

[0108] like Figure 3 and Figure 4 As shown, in another embodiment of the present invention, the range hood further includes a smoke collection assembly 10; the air guide plate 12 is connected to the smoke collection assembly 10 and can be switched between a closed state and an open state;

[0109] The first detection component 20 and the second detection component 30 are both disposed on the air guide plate 12 and are respectively located on the two opposite sides of the air guide plate 12; the detection area of ​​the first detection component 20 faces the outside of the air guide plate 12, and the detection area of ​​the second detection component 30 faces the inside of the air guide plate 12.

[0110] In the closed state, the air guide plate 12 is in the closed position, and the first detection component 20 can detect whether the stove 200 in the detection area is ignited; in the open state, the air guide plate 12 flips forward, and the second detection component 30 can detect whether the stove 200 in the detection area is turned off.

[0111] Specifically, in the closed state, since the detection area of ​​the first detection component 20 faces the outside of the guide vane 12, the guide vane 12 will not obstruct the first detection component 20 from detecting the stove 200. The first detection component 20 can detect whether the stove 200 is ignited. In the open state, the guide vane 12 flips forward so that the inner surface of the guide vane 12 faces the stove 200. Since the detection area of ​​the second detection component 30 faces the inside of the guide vane 12, the second detection component 30 can obtain whether the stove 200 in the detection area is turned off. Therefore, by the cooperation of the first detection component 20 and the second detection component 30, the state of the stove 200 in the detection area can be obtained in both the closed and open states, regardless of the flip angle of the guide vane 12, which improves the accuracy of temperature detection and takes into account both intelligent detection and a larger smoke collection chamber 101.

[0112] The first and second detection components can detect either the cooktop 200 or the cookware on the cooktop 200. When the air guide plate 12 is in the closed position, its outer surface faces the cooktop 200, thus facilitating the first detection component 20 to obtain the status of the cooktop 200 within the detection area.

[0113] It should be noted that, in this embodiment of the invention, the first detection component 20 and the second detection component 30 need to work together to achieve the detection effect on the stove 200, whether in the closed or open state. Figures 1-2 and Figures 3-4 There are two positional relationships between the first detection component 20 and the second detection component 30. Figure 1 and Figure 2 In the structure shown, the first detection component 20 is disposed in the main body, and the second detection component 30 is disposed in the movable smoke hood 13 or the air guide plate 12; Figure 3 and Figure 4 The structure shown integrates the first detection component 20 and the second detection component 30 into a single unit. The detection area of ​​the first detection component 20 faces the outer side of the guide vane 12, while the detection area of ​​the second detection component 30 faces the inner side of the guide vane 12. Both structures can achieve the aforementioned effects, and the specific distribution of the first detection component 20 and the second detection component 30 is not limited here.

[0114] Specifically, based on the above structure, refer to Figures 1-5 The control method of this range hood includes:

[0115] S110. In standby mode, the first temperature of the stove is detected in real time using the first detection component.

[0116] The first temperature refers to the temperature of the cooktop 200 detected by the first detection component 20 when the range hood is in standby mode. It can be understood that by detecting the temperature of the cooktop 200, the first detection component 20 can determine whether the user is cooking. Since the temperature near the cooktop 200 rises during cooking, and cooking inevitably produces fumes, real-time temperature detection can determine the presence of fumes and further control the state of the range hood.

[0117] Specifically, in standby mode, when the air guide plate 12 is closed, the air guide plate 12 blocks the space between the second detection component 30 and the stove 200. At this time, the first detection component 20 detects the first temperature T1 of the stove 200 in real time.

[0118] S120. Based on the real-time detected first temperature of the stove, calculate the rate of change of the first temperature over time to obtain the first temperature change rate.

[0119] Among them, the first temperature change rate is the rate of change of the first temperature over time when the range hood is in standby mode.

[0120] Specifically, the rate of change of the first temperature over a specific time period can be preset. Then, by calculating this rate of change, the first temperature change rate δ1 is obtained. The first temperature change rate δ1 is essentially used to determine whether a high-temperature object exists near the cooktop 200 when the range hood is in standby mode. If the first temperature change rate δ1 is greater than zero, it indicates that the temperature near the cooktop 200 is continuously rising during this time period, indicating that the user is cooking with the cooktop 200. If the first temperature change rate δ1 is less than or equal to zero, it indicates that the temperature in the area around the cooktop 200 remains constant or continues to decrease during this time period, indicating that the cooktop 200 is not in an ignition state. Based on the first temperature change rate δ1, the working status of the cooktop 200 can be more accurately understood, allowing for further control.

[0121] S130. Based on the first temperature and the first temperature change rate, control whether the range hood switches from standby mode to on mode.

[0122] Specifically, the range hood is controlled to switch from standby mode to on mode based on the comparison between the first temperature T1 of the cooktop 200 and the preset temperature, and the comparison between the first temperature change rate δ1 and the preset standard.

[0123] For example, if the first temperature T1 is equal to or higher than the preset temperature, and the first temperature change rate δ1 is greater than zero, the range hood is controlled to switch from standby mode to on mode; otherwise, the range hood remains in standby mode. If the preset temperature is set to 50℃, meaning the first detection component 20 detects a temperature equal to or higher than 50℃, and the first temperature change rate δ1 is greater than zero, the range hood is controlled to switch to on mode. If, at this time, the first detection component 20 detects a first temperature T1 of 60℃ for the cooktop 200, which is higher than the preset temperature, and the first temperature change rate δ1 is 1, the range hood switches from standby mode to on mode and begins to absorb fumes. If, at this time, the first detection component 20 detects a first temperature T1 of 60℃ for the cooktop 200, which is higher than the preset temperature, and the first temperature change rate δ1 is -1, the range hood remains in standby mode.

[0124] S140. When the appliance is powered on, the second detection component is used to detect the second temperature of the stove in real time.

[0125] The second temperature is the temperature of the cooktop 200 detected by the second detection component 30 when the range hood is turned on.

[0126] Specifically, when the range hood is turned on and the air guide plate 12 is in the open state, the air guide plate 12 blocks the space between the first detection component 20 and the cooktop 200. At this time, the second detection component 30 starts to detect the second temperature T2 of the cooktop 200.

[0127] S150. Based on the real-time detected second temperature of the stove, calculate the rate of change of the second temperature over time to obtain the rate of change of the second temperature.

[0128] Among them, the second temperature change rate is the rate of change of the second temperature over time when the range hood is turned on.

[0129] Specifically, the required rate of change of the second temperature over a specific time period can be preset. Then, by calculating this rate of change, the second temperature change rate δ2 is obtained. The second temperature change rate δ2 is essentially used to determine whether a high-temperature object exists near the cooktop 200 when the range hood is on. If the second temperature change rate δ2 is greater than zero, it indicates that the temperature near the cooktop 200 is continuously rising during this time period, indicating that the user is cooking with the cooktop 200. If the second temperature change rate δ2 is less than or equal to zero, it indicates that the temperature in the area around the cooktop 200 remains constant or continues to decrease during this time period, indicating that the cooktop 200 is not in an ignition state. Based on the second temperature change rate δ2, the working status of the cooktop 200 can be more accurately understood, allowing for further control.

[0130] S160. Based on the second temperature and the second temperature change rate, control the working level of the range hood and whether the range hood switches from the on state to the standby state.

[0131] Specifically, the range hood is controlled to switch from the on state to the standby state based on the comparison between the second temperature T2 of the cooktop 200 and the preset temperature, and the comparison between the second temperature change rate δ2 and the preset standard.

[0132] For example, if the second temperature T1 is equal to or higher than the preset temperature, and the second temperature change rate δ2 is greater than zero, the range hood is controlled to remain on; otherwise, it switches from on to standby. If the preset temperature is set to 50℃, meaning the second detection component 30 detects a temperature equal to or higher than 50℃, and the second temperature change rate δ2 is greater than zero, the range hood is controlled to remain on. If, at this time, the second detection component 30 detects a second temperature T2 of 60℃ for the cooktop 200, which is higher than the preset temperature, and the second temperature change rate δ2 is 1, the range hood remains on to continue absorbing fumes. If, at this time, the second detection component 30 detects a second temperature T2 of 60℃ for the cooktop 200, which is higher than the preset temperature, and the second temperature change rate δ2 is -1, the range hood switches from on to standby.

[0133] This invention provides a control method for a range hood, wherein the range hood includes an air guide plate, a first detection component, and a second detection component; the first detection component and the second detection component are respectively located in opposite spaces on both sides of the air guide plate; when the air guide plate is in a closed state, the air guide plate blocks the space between the second detection component and the cooktop; when the air guide plate is in an open state, the air guide plate blocks the space between the first detection component and the cooktop; the control method includes: in a standby state, using the first detection component to detect a first temperature of the cooktop in real time; calculating the rate of change of the first temperature over time based on the real-time detected first temperature of the cooktop, and obtaining a first temperature change rate; controlling whether the range hood switches from a standby state to an on state based on the first temperature and the first temperature change rate; in the on state, using the second detection component to detect a second temperature of the cooktop in real time; calculating the rate of change of the second temperature over time based on the real-time detected second temperature of the cooktop, and obtaining a second temperature change rate; controlling the working level of the range hood and whether the range hood switches from an on state to a standby state based on the second temperature and the second temperature change rate. This control method detects the stove temperature using a first and a second detection component, and uses the first and second temperature change rates to help determine whether cooking is taking place. This allows for precise and intelligent control of the range hood's on / off and standby states to filter cooking fumes. Furthermore, the first detection component detects the stove temperature when the range hood is in standby mode, controlling whether to switch it to on mode. The second detection component detects the stove temperature when the range hood is on, controlling whether to switch it to standby mode without affecting the fume extraction effect. This refined control method allows for intelligent and free switching between different range hood states, improving user convenience, intelligently detecting the environment, protecting user health, and enhancing their quality of life.

[0134] Optionally, in step S120 above, the rate of change of the first temperature over time is calculated based on the real-time detected first temperature of the stove to obtain the first temperature change rate, which can be further refined as follows:

[0135] The first temperature change rate δ1 is calculated according to the temperature change rate formula δ1=(T1'-T1) / t1; where T1 and T1' are two first temperature values ​​of the stove obtained by the first detection component in sequence at a first preset time interval t1.

[0136] For example, the first preset time interval t1 can be set to 3s-5s. For instance, if the first preset time interval t1 is set to 4s, when the range hood is in standby mode, the temperature T1 is recorded as 30℃. After 4s, the temperature T1' is measured again as 40℃. Then, the first temperature change rate is... If δ1 is greater than zero, it indicates that the temperature in the area of ​​the stove 200 is continuously rising during this period. At this time, it is determined that the stove 200 is ignited for cooking. Combined with the first temperature, the working status of the range hood is controlled, which improves the accuracy of determining the working status of the stove 200 and more accurately determines the user's needs.

[0137] It is understandable that this method is also applicable to calculating the rate of change of the second temperature over time. For example, the second preset time interval t2 can be set to 3-5 minutes. If the second preset time interval t2 is set to 4 minutes, and the temperature T2 is recorded as 40℃ when the range hood is on, and the temperature T2' is measured again after 4 minutes as 30℃, then the rate of change of the second temperature is obtained. δ2 being less than zero indicates that the temperature in the area of ​​the stove 200 detected during this period is continuously decreasing. Combining this with the second temperature reading to control the working status of the range hood also improves the accuracy of determining the working status of the stove 200, allowing for a more accurate assessment of the user's needs.

[0138] Figure 6 This is a flowchart of another control method for a range hood provided by an embodiment of the present invention. The present invention refines the above embodiment. Specifically, step S130, which controls whether the range hood switches from standby mode to on mode based on the first temperature and the first temperature change rate, can be further refined as follows:

[0139] When the cooktop is in the first temperature range, the range hood is kept in standby mode.

[0140] When the first temperature of the stove is in the second temperature range, the range hood is controlled to switch from standby mode to on mode based on the first temperature change rate.

[0141] The temperature values ​​in the first temperature range are lower than those in the second temperature range.

[0142] Furthermore, the second detection component 30 includes a first infrared temperature sensor and a second infrared temperature sensor, and the stove includes a first burner 201 and a second burner 202; the first infrared temperature sensor faces the first burner 201, and the second infrared temperature sensor faces the second burner 202; the second temperature includes the first burner temperature and the second burner temperature.

[0143] Regarding step S140 above, in the powered-on state, the second detection component is used to detect the second temperature of the stove in real time, which can be further refined as follows:

[0144] When the machine is powered on, the temperature of the first burner head is detected in real time using the first infrared temperature sensor, and the temperature of the second burner head is detected in real time using the second infrared temperature sensor.

[0145] For step S150 above, based on the real-time detected second temperature of the stove, the rate of change of the second temperature over time is calculated to obtain the rate of change of the second temperature, which can be further refined as follows:

[0146] Based on the real-time detected temperature of the first burner head, the rate of change of the temperature of the first burner head over time is calculated to obtain the rate of change of the temperature of the first burner head.

[0147] Based on the real-time monitored temperature of the second burner head, the rate of change of the temperature of the second burner head over time is calculated to obtain the rate of change of the temperature of the second burner head.

[0148] The above step S160, which controls the operating level of the range hood and whether the range hood switches from the on state to the standby state based on the second temperature and the second temperature change rate, can be further broken down as follows:

[0149] Based on the temperature of the first burner head, the temperature of the second burner head, and the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled.

[0150] For details not covered in this embodiment, please refer to the previous embodiment.

[0151] refer to Figures 1-4 and Figure 6 The control method for a range hood provided in this embodiment of the invention includes the following specific steps:

[0152] S210. In standby mode, the first temperature of the stove is detected in real time using the first detection component.

[0153] S220. Based on the real-time detected first temperature of the stove, calculate the rate of change of the first temperature over time to obtain the first temperature change rate.

[0154] S231. When the first temperature of the stove is in the first temperature range, control the range hood to remain in standby mode.

[0155] Among them, the first temperature range t1 is the range of values ​​of the first temperature T1 of the cooktop 200 that the range hood can maintain in standby mode.

[0156] Specifically, if the first temperature T1 of the stove detected by the first detection component 20 is within the first temperature range t1, it proves that the stove 200 is not in working condition and no oil fumes are generated, so the range hood can continue to remain in standby mode.

[0157] S232. When the first temperature of the stove is in the second temperature range, control whether the range hood switches from standby mode to on mode according to the first temperature change rate.

[0158] Among them, the temperature value in the first temperature range t1 is less than the temperature value in the second temperature range t2. The second temperature range t2 is the range of values ​​of the first temperature T1 of the stove 200 that needs to be switched from standby to on state when the range hood is in standby state.

[0159] Specifically, if the first temperature T1 of the stove detected by the first detection component 20 is in the second temperature range t2, and the temperature has increased, it proves that the stove 200 is in working condition and produces oil fumes. Based on the calculated first temperature change rate, the range hood is controlled to switch from standby mode to on mode.

[0160] For example, the first temperature range t1 can be a left-open range, and the second temperature range t2 can be a right-open range. The right endpoint value of the first temperature range t1 is the same as the left endpoint value of the second temperature range t2, which is essentially a threshold. The threshold can be set according to the experiment. For example, the threshold can be 50℃, that is, t1 is (0℃, 50℃) and t2 is [50℃, +∞). When the measured first temperature T1 is in the first temperature range t1, the range hood maintains the standby state; when the measured first temperature T1 is in the second temperature range t2, and the first temperature change rate δ1 is greater than zero, the range hood switches to the on state.

[0161] S240. When the machine is powered on, the temperature of the first burner head of the first burner head is detected in real time using the first infrared temperature sensor, and the temperature of the second burner head of the second burner head is detected in real time using the second infrared temperature sensor.

[0162] Specifically, the second detection component 30 includes a first infrared temperature sensor (not shown in the figure) and a second infrared temperature sensor (not shown in the figure), and the stove 200 includes a first burner 201 and a second burner 202; the first infrared temperature sensor faces the first burner 201, and the second infrared temperature sensor faces the second burner 202; the second temperature T2 includes the first burner temperature T. 21 Second furnace head temperature T 22 That is, the temperature of the first furnace head 201 detected by the first infrared temperature sensor of the second detection component 30 is T. 21 The second infrared temperature sensor of the second detection component 30 detects the second furnace head temperature of the second furnace head 202 as T. 22 .

[0163] S251. Based on the real-time detected temperature of the first burner head, calculate the rate of change of the temperature of the first burner head over time to obtain the rate of change of the temperature of the first burner head.

[0164] Among them, the temperature change rate of the first burner head δ21 is the rate of change of the temperature of the first burner head over time when the range hood is turned on.

[0165] Furthermore, step S251 above can be further refined as follows:

[0166] The temperature change rate δ21 is calculated according to the temperature change rate formula δ21=(T21'-T21) / t2; where T21 and T21' are two first furnace head temperature values ​​obtained by the first infrared temperature sensor in sequence at a second preset time interval t2.

[0167] For example, the second preset time interval t2 is set to 4 minutes. When the range hood is on, the initial temperature T21 of the first burner head is recorded as 30°C. After 4 minutes, the temperature T21' is measured again as 40°C. The rate of change of the first burner head temperature is then recorded. δ21 is greater than zero, indicating that the temperature in the first furnace head 201 region was continuously rising during this period.

[0168] In this embodiment of the invention, the working status of the first burner 201 can be accurately detected by the temperature change rate δ21 of the first burner, thereby determining whether oil fumes are generated and accurately controlling the state of the range hood.

[0169] S252. Based on the real-time detected temperature of the second burner head, calculate the rate of change of the temperature of the second burner head over time to obtain the rate of change of the temperature of the second burner head.

[0170] Among them, the temperature change rate of the second burner δ22 is the rate of change of the temperature of the second burner over time when the range hood is turned on.

[0171] Furthermore, step S252 above can be further refined as follows:

[0172] The temperature change rate δ22 is calculated according to the temperature change rate formula δ22=(T22'-T22) / t2; where T22 and T22' are two second burner temperature values ​​obtained by the second infrared temperature sensor in sequence at the second preset time interval t2.

[0173] For example, the second preset time interval t2 is set to 4 minutes. When the range hood is on, the initial temperature T22 of the second burner is recorded as 50°C. After 4 minutes, the temperature T22' is measured again as 30°C. The rate of change of the second burner temperature is then recorded. The fact that δ22 is greater than zero indicates that the temperature in the second furnace head 202 region was continuously rising during this period.

[0174] In this embodiment of the invention, the working status of the second burner 202 can be accurately detected by the temperature change rate δ22 of the second burner, thereby determining whether oil fumes are generated and accurately controlling the state of the range hood.

[0175] S260: Based on the temperature of the first burner head, the temperature of the second burner head, the temperature change rate of the first burner head, and the temperature change rate of the second burner head, control the working level of the range hood and whether the range hood switches from the on state to the standby state.

[0176] Specifically, regarding the temperature T of the first furnace head... 21 Compared to the preset temperature, the second furnace head temperature T 22 Compared with the preset temperature, the temperature change rate δ21 of the first burner head is compared with the preset standard, and the temperature change rate δ22 of the first burner head is compared with the preset standard. Based on the comparison results, the range hood is controlled to switch from the on state to the standby state.

[0177] For example, if the temperature T of the first furnace head 21 Or the temperature of the second furnace head T 22 If the temperature is equal to or higher than the preset temperature, and the temperature change rate δ21 or δ22 of the first burner head is greater than zero, then the range hood will remain on. Otherwise, the range hood will switch from on to standby mode. For example, if the preset temperature is set to 50℃, the second detection component 30 will detect the temperature T of the first burner head. 21 Or the temperature of the second furnace head T 22 If the temperature is equal to or higher than 50℃, and the temperature change rate δ21 or δ22 of the first burner head is greater than zero, the range hood will be kept on. At this time, the detected temperature T of the first burner head... 21 The temperature is 30℃, while the temperature of the second furnace head is T. 22 The temperature is 60℃, and the highest temperature at this point is the second furnace head temperature T. 22 If the temperature of the first burner head is higher than the preset temperature, the temperature change rate δ21 of the first burner head is zero, and the temperature change rate δ22 of the second burner head is greater than zero, then the range hood will remain on. If the detected temperature of the first burner head T is higher than the preset temperature, the range hood will remain on. 21 The temperature is 40℃, while the temperature of the second furnace head is T. 22 The temperature is 30℃, and the highest temperature at this point is the temperature T of the first furnace head. 21 When the temperature is below the preset temperature, regardless of whether the temperature change rate δ21 and the temperature change rate δ22 of the first burner are greater than zero, the range hood will switch from the on state to the standby state.

[0178] The present invention provides a control method for a range hood, comprising: in a standby state, using a first detection component to detect a first temperature of the cooktop in real time; calculating the rate of change of the first temperature over time based on the real-time detected first temperature of the cooktop, and obtaining a first temperature change rate; controlling the range hood to remain in a standby state when the first temperature of the cooktop is within a first temperature range; controlling whether the range hood switches from a standby state to an on state based on the first temperature change rate when the first temperature of the cooktop is within a second temperature range; in the on state, using a first infrared temperature sensor to detect the first burner temperature of a first burner in real time, and using a second infrared temperature sensor to detect the second burner temperature of a second burner in real time; calculating the rate of change of the first burner temperature over time based on the real-time detected first burner temperature, and obtaining a first burner temperature change rate; calculating the rate of change of the second burner temperature over time based on the real-time detected second burner temperature, and obtaining a second burner temperature change rate; controlling the operating level of the range hood and whether the range hood switches from an on state to a standby state based on the first burner temperature, the second burner temperature, the first burner temperature change rate, and the second burner temperature change rate. This method improves the conditions for a range hood to switch from standby to on, enabling it to intelligently detect when the user is cooking and automatically turn on to filter fumes, thus enhancing user satisfaction. Furthermore, it refines the conditions for switching from on to standby by separately monitoring the temperature of each burner and combining the temperature change rate of the first burner with other temperature changes to determine burner usage, improving detection accuracy. This allows the method to detect when the user has finished cooking and intelligently switch the range hood to standby, eliminating the need for the user to turn it off. This prevents users from forgetting to turn it off, protects user health, saves electricity, and enhances the user experience.

[0179] Optionally, step S232 above, which controls whether the range hood switches from standby mode to on mode based on the first temperature change rate, can be further refined as follows:

[0180] S2321. When the first temperature change rate is within the first change rate range, control the range hood to remain in standby mode.

[0181] The first rate of change range is a pre-set range of values ​​for the first temperature change rate of the cooktop 200 in standby mode, which is the range that the range hood can maintain in standby mode.

[0182] Specifically, if the first temperature T1 of the stove detected by the first detection component 20 is in the second temperature range t2, and the first temperature change rate is in the first change rate range, it proves that the stove 200 is not in working state and no oil fumes are generated, so the range hood can continue to remain in standby state.

[0183] S2322. When the first temperature change rate is within the second change rate range, control the range hood to switch from standby mode to on mode.

[0184] The rate of change within the first rate of change interval is less than the rate of change within the second rate of change interval. The second rate of change interval is a pre-set range of values ​​for the first temperature change rate of the cooktop 200 when the range hood needs to be switched from standby to on state.

[0185] Specifically, if the first temperature T1 of the stove detected by the first detection component 20 is in the second temperature range t2, and the first temperature change rate is in the second change rate range, then it proves that the stove 200 is in working condition and produces oil fumes, and the range hood is switched to the on state.

[0186] For example, the first temperature change rate can be a left-open interval, and the second temperature change rate can be a right-open interval. The right endpoint of the first temperature change rate and the left endpoint of the second temperature change rate are the same, which is essentially a threshold. The threshold can be set according to the experiment. For example, the threshold can be 0, that is, the first temperature change rate interval is (-∞, 0], and the second temperature change rate interval is (0, +∞). When the first temperature T1 is in the second temperature interval t2, and the measured first temperature change rate is in the first change rate interval, the range hood maintains the standby state; when the first temperature T1 is in the second temperature interval t2, and the measured first temperature change rate is in the second change rate interval, the range hood switches to the on state.

[0187] The range hood control method provided in this invention further divides the situation where the first temperature is in the second temperature range into two cases: the first temperature change rate is in the first change rate range and the first temperature change rate is in the second change rate range. For different ranges of the first temperature change rate, the range hood is controlled to remain in standby mode or switch to on mode. This prevents the range hood from mistakenly starting when the user passes by or stops in front of the stove panel with hot food or boiling water, even if the user has not turned on the stove for cooking. This would result in a poor user experience. Therefore, this method optimizes the intelligent control judgment and reduces the probability of the range hood starting falsely.

[0188] Figure 7 This is a flowchart of another control method for a range hood provided by an embodiment of the present invention. The embodiments of the present invention further refine the above embodiments. The temperature range includes a third temperature range and a fourth temperature range. The temperature value in the third temperature range is lower than the temperature value in the fourth temperature range.

[0189] Regarding the above step S260, based on the temperature of the first burner head, the temperature of the second burner head, and the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head, the operating level of the range hood and whether the range hood switches from the on state to the standby state can be further refined as follows:

[0190] When both the first burner temperature and the second burner temperature are in the third temperature range, the range hood is switched from the on state to the standby state.

[0191] When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, the operating level of the range hood is controlled according to the temperature change rate of the first burner head and / or the temperature change rate of the second burner head.

[0192] For details not covered in this embodiment, please refer to the previous embodiment.

[0193] refer to Figures 1-4 and Figure 7 The control method for a range hood provided in this embodiment of the invention includes the following specific steps:

[0194] S310. In standby mode, the first temperature of the stove is detected in real time using the first detection component.

[0195] S320. Based on the real-time detected first temperature of the stove, calculate the rate of change of the first temperature over time to obtain the first temperature change rate.

[0196] S331. When the first temperature of the stove is in the first temperature range, control the range hood to remain in standby mode.

[0197] S332. When the first temperature of the stove is in the second temperature range, control whether the range hood switches from standby mode to on mode according to the first temperature change rate.

[0198] S340. When the machine is powered on, the temperature of the first burner head is detected in real time using the first infrared temperature sensor, and the temperature of the second burner head is detected in real time using the second infrared temperature sensor.

[0199] S350. Based on the real-time detected second temperature of the stove, calculate the rate of change of the second temperature over time to obtain the rate of change of the second temperature.

[0200] S361. When both the first burner temperature and the second burner temperature are in the third temperature range, control the range hood to switch from the on state to the standby state.

[0201] Among them, the third temperature range t3 is the first burner temperature T that the range hood needs to switch to standby mode when it is turned on. 21 Second furnace head temperature T 22 The range of values ​​for .

[0202] Specifically, if the first infrared temperature sensor detects the temperature T of the first furnace head... 21 It is in the third temperature range t3, and the second infrared temperature sensor detects the second furnace head temperature T. 22 If the temperature is also within the third temperature range t3, it proves that the stove 200 is not in working condition and no oil fumes are produced, so the range hood switches to standby mode.

[0203] For example, the third temperature range t3 is set to (0, 45°C), and the first infrared temperature sensor detects the temperature T of the first furnace head. 21 The second infrared temperature sensor detects the temperature T of the second furnace head at 35℃. 22 The temperature is 40℃, which is within the third temperature range t3, indicating that the user is not cooking. Therefore, the range hood is switched from the on state to the standby state.

[0204] S362. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, control the working level of the range hood according to the temperature change rate of the first burner head and / or the temperature change rate of the second burner head.

[0205] Among them, the temperature value in the third temperature range t3 is lower than the temperature value in the fourth temperature range t4. The fourth temperature range t4 is the pre-set first burner temperature T that the range hood maintains when it is turned on. 21 Second furnace head temperature T 22 The range of values ​​for is important to note. It can be either one temperature is within this range and the other is below it, or both are within this range.

[0206] Specifically, if the temperature of the first furnace head is T 21 Second furnace head temperature T 22 When at least one temperature reaches the fourth temperature range t4, the stove 200 is determined to be in working condition and whether oil fumes are generated based on the temperature change rate of the first burner and / or the temperature change rate of the second burner, thereby controlling the different working states of the range hood.

[0207] For example, the fourth temperature range t4 is set to [45℃, +∞), and the first infrared temperature sensor detects the temperature T of the first furnace head. 21 The second infrared temperature sensor detects the temperature T of the second furnace head at 35℃. 22 If the temperature is 50℃, meaning there is a fourth temperature range t4, and the temperature change rate of the first burner and / or the temperature change rate of the second burner are greater than zero, it proves that the user is cooking. In this case, the range hood will remain on, and the amount of oil fumes will be judged based on the highest temperature. Then, the corresponding range hood working level will be selected to achieve the effect of completely filtering oil fumes.

[0208] The control method provided by this invention can divide the measured temperature range of the first burner and the second burner when the range hood is turned on, and control the state of the range hood by combining the temperature change rate of the first burner and / or the temperature change rate of the second burner, which is more in line with the actual situation and improves the user's quality of life.

[0209] Furthermore, regarding step S362 above, when the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, the operating level of the range hood is controlled according to the temperature change rate of the first burner head and / or the temperature change rate of the second burner head. Specifically, this can be refined as follows:

[0210] S3621. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the first burner head temperature and the rate of change of the second burner head temperature are both within the first rate of change range, control the range hood to switch to standby mode.

[0211] Among them, the first rate of change range is the range of values ​​for the first burner temperature change rate and the second burner temperature change rate when the range hood needs to switch from the on state to the standby state.

[0212] Specifically, if the temperature of the first furnace head is T 21 Second furnace head temperature T 22 If at least one temperature reaches the fourth temperature range t4, and the temperature change rates of the first burner and the second burner are both within the first change rate range, then it proves that the stove 200 is not in working condition and no oil fumes are produced. In this case, the range hood can continue to remain in standby mode.

[0213] S3622. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, the range hood is controlled to operate at the range hood speed corresponding to the temperature sub-range where the temperature of the first burner head and / or the temperature of the second burner head that has reached the fourth temperature range is located.

[0214] The rate of change within the first rate of change interval is less than the rate of change within the second rate of change interval. The second rate of change interval is a pre-set range of the first and second burner temperature change rates when the range hood is in standby mode while powered on. The temperature sub-interval is a further division of the fourth temperature interval t4 to categorize the ranges of the first and second burner temperatures, determine the amount of oil fumes generated during cooking, and thus determine the appropriate range hood setting.

[0215] Specifically, if the temperature of the first furnace head is T 21 Second furnace head temperature T 22When at least one temperature reaches the fourth temperature range t4, and the temperature change rate of the first burner head and / or the temperature change rate of the second burner head are in the second change rate range, the range hood is controlled to operate at the range hood speed corresponding to the temperature sub-range where the first burner head temperature and / or the second burner head temperature that reaches the fourth temperature range are located.

[0216] Furthermore, the range hood has three speed settings: the first speed setting, the second speed setting, and the third speed setting; the operating power of the first speed setting, the second speed setting, and the third speed setting increases sequentially.

[0217] The fourth temperature range includes the first temperature sub-range, the second temperature sub-range, and the third temperature sub-range; the temperature values ​​of the first temperature sub-range, the second temperature sub-range, and the third temperature sub-range increase sequentially.

[0218] Regarding step S3622 above, when the first burner temperature and / or the second burner temperature reach the fourth temperature range, and when the rate of change of the first burner temperature and / or the rate of change of the second burner temperature are within the second rate of change range, the range hood is controlled to operate at the range hood speed corresponding to the temperature sub-range where the first burner temperature and / or the second burner temperature that has reached the fourth temperature range are located. This can be further refined as follows:

[0219] S36221. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the first temperature sub-range, control the range hood to operate at the first gear.

[0220] Among them, the first temperature sub-interval t 41 This refers to the temperature range reached by the first burner and / or the second burner when the range hood produces relatively little smoke during operation. The first setting corresponds to the operating setting of the range hood when producing less smoke under different cooking conditions.

[0221] Specifically, when the first burner head temperature and / or the second burner head temperature reach the fourth temperature range, and the rate of change of the first burner head temperature and / or the rate of change of the second burner head temperature are within the second rate of change range, and the detected first burner head temperature T... 21 Second furnace head temperature T 22 In the middle, at least one temperature reaches the first temperature sub-interval t 41 At that time, control the range hood to run at the first speed setting.

[0222] For example, the range hood can be set to a low setting, a high setting, and a stir-fry setting, with the operating power increasing sequentially. The first setting corresponds to the low setting, and the first temperature sub-range t is set accordingly. 41It is [50℃, 100℃), at which point the temperature T of the first furnace head was measured. 21 The temperature is 30℃, while the temperature of the second furnace head is T. 22 The temperature is 60℃, and the highest temperature at this point is the second furnace head temperature T. 22 And reach the first temperature sub-interval t 41 If so, the range hood will be controlled to operate at the lowest setting, i.e., the first setting.

[0223] S36222 When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the second temperature sub-range, control the range hood to operate at the second gear.

[0224] Among them, the second temperature sub-interval t 42 The first setting refers to the temperature range reached by the first burner and / or the second burner when the range hood produces a moderate amount of cooking fumes. The second setting refers to the operating setting of the range hood when producing a moderate amount of cooking fumes under different cooking conditions.

[0225] Specifically, when the first burner head temperature and / or the second burner head temperature reach the fourth temperature range, and when the rate of change of the first burner head temperature and / or the rate of change of the second burner head temperature are within the second rate of change range, and when the detected first burner head temperature T... 21 Second furnace head temperature T 22 In the middle, at least one temperature reaches the second temperature sub-interval t 42 At that time, control the range hood to run at the second speed.

[0226] For example, the range hood can be set to a low, high, and high-power setting, with the operating power increasing sequentially. The second setting corresponds to the high setting, and the set second temperature sub-range t... 42 It is [100℃, 200℃), at which point the temperature T of the first furnace head was measured. 21 The temperature is 60℃, while the temperature of the second furnace head is T. 22 The temperature is 110℃, and the highest temperature at this point is the second furnace head temperature T. 22 And reach the second temperature sub-interval t 42 If so, the range hood will be controlled to operate at the highest setting, i.e., the second setting.

[0227] S36223. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the temperature of the first burner head and / or the rate of change of the temperature of the second burner head are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the third temperature sub-range, control the range hood to operate at the third gear.

[0228] Among them, the third temperature sub-interval t43 The first setting refers to the temperature range reached by the first burner and / or the second burner when the range hood produces a large amount of cooking fumes. The third setting corresponds to the operating level of the range hood when producing a large amount of cooking fumes under different cooking conditions.

[0229] Specifically, when the first burner head temperature and / or the second burner head temperature reach the fourth temperature range, and the rate of change of the first burner head temperature and / or the rate of change of the second burner head temperature are within the second rate of change range, and the detected first burner head temperature T... 21 Second furnace head temperature T 22 In the middle, at least one temperature reaches the third temperature sub-interval t 43 At that time, control the range hood to run at the third speed setting.

[0230] For example, the range hood can be set to three operating levels: low, high, and high-power (or "stir-fry"), with the operating power increasing sequentially. The third level corresponds to the high-power (or "stir-fry") setting, and the third temperature sub-range t is set accordingly. 43 It is [200℃, +∞), at which point the temperature T of the first furnace head was measured. 21 The temperature is 60℃, while the temperature of the second furnace head is T. 22 The temperature is 210℃, and the highest temperature at this point is the second furnace head temperature T. 22 And reach the third temperature sub-interval t 43 If you select the desired setting, the range hood will be set to the stir-fry setting, which is the third setting.

[0231] The control method provided in this embodiment of the invention, when the range hood is turned on, refines the range hood's power settings into a first power setting, a second power setting, and a third power setting, with the operating power of the first, second, and third power settings increasing sequentially; it also refines the fourth temperature range into a first temperature sub-range, a second temperature sub-range, and a third temperature sub-range, with the temperature values ​​of the first, second, and third temperature sub-ranges increasing sequentially. The method also addresses the measured first burner temperature T. 21 and / or the second furnace head temperature T 22 The system calculates the temperature range reached and then controls the range hood to operate at the corresponding setting. This control method determines the amount of oil fumes generated based on different burner temperatures and then intelligently controls the range hood to operate at the corresponding setting. This ensures that the appropriate range hood setting is selected for the cooking situation, which can not only completely filter the oil fumes but also save electricity and improve the practicality of the range hood.

[0232] Optionally, the first temperature range and the third temperature range are the same, and the second temperature range and the fourth temperature range are the same.

[0233] For example, the first temperature range t1 and the third temperature range t3 are the same, which is (0, 50℃), and the second temperature range t2 and the fourth temperature range t4 are the same, which is [50℃, +∞). That is, the switching temperature threshold for the standby state and the on state of the range hood is the same.

[0234] Figure 8 This is a flowchart of another control method for a range hood provided in an embodiment of the present invention, see reference. Figures 1-4 and Figure 8 The embodiments of the present invention have optimized the above embodiments, and the specific control method is as follows:

[0235] S4010, Range Hood in standby mode.

[0236] S4020, the baffle is closed, and the first temperature of the stove is detected by the first detection component.

[0237] S4031, Determine if the first temperature is <50℃.

[0238] Specifically, if the first temperature is less than 50°C, then return to step S4010.

[0239] S4032, Determine if the first temperature is ≥50℃.

[0240] If the first temperature is determined to be ≥50℃, proceed with step S4041 or S4042.

[0241] S4041, Determine that the first temperature change rate is ≤0.

[0242] Specifically, if the first temperature change rate is determined to be ≤0, then return to execute S4010.

[0243] S4042, Determine that the first temperature change rate is >0.

[0244] Specifically, if the first temperature change rate is determined to be >0, then S4050 is executed.

[0245] S4050, range hood with smart start-up.

[0246] Specifically, after the range hood is intelligently turned on, S4060 is executed.

[0247] S4060, the baffle is opened, and the second detection component detects the temperature of the stove.

[0248] Specifically, after the second detection component detects the temperature of the stove, steps S4071, S4072, or S4073 can be executed.

[0249] S4071, It is determined that the temperature of both the first and second burners is below 50℃.

[0250] Specifically, when it is determined that the temperature of both the first and second burners is below 50°C, step S4100 is executed.

[0251] S4100, range hood with intelligent shutdown function.

[0252] Specifically, after executing the intelligent shutdown of the range hood, the process returns to step S4010.

[0253] S4072, Determine that the temperature of the first burner head and / or the temperature of the second burner head are between 50℃ and 100℃.

[0254] Specifically, when the temperature of the first burner head and / or the temperature of the second burner head are determined to be between 50°C and 100°C, step S4081 or S4082 is executed.

[0255] S4081, Determine if the temperature change rate of the first burner head is <0 and the temperature change rate of the second burner head is <0.

[0256] Specifically, when it is determined that the temperature change rate of the first burner head is <0 and the temperature change rate of the second burner head is <0, return to step S4100.

[0257] S4082, Determine whether the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0.

[0258] Specifically, when it is determined that the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0, step S4091 is executed.

[0259] S4091, Range hood operating at low speed.

[0260] S4073, Determine that the temperature of the first burner head and / or the temperature of the second burner head are between 100℃ and 200℃.

[0261] Specifically, when the temperature of the first burner head and / or the temperature of the second burner head are determined to be between 100°C and 200°C, steps S4081 or S4083 can be executed.

[0262] S4083, Determine whether the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0.

[0263] Specifically, when it is determined that the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0, step S4092 is executed.

[0264] S4092, Range hood in high-power mode.

[0265] S4074. Determine that the temperature of the first burner head and / or the temperature of the second burner head are greater than 200℃.

[0266] Specifically, if the temperature of the first burner head and / or the temperature of the second burner head are determined to be greater than 200°C, steps S4081 or S4084 can be executed. S4084: Determine that the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0.

[0267] Specifically, when it is determined that the temperature change rate of the first burner head is ≥0 or the temperature change rate of the second burner head is ≥0, step S4093 is executed.

[0268] S4093, Range hood in high-heat cooking mode.

[0269] The range hood control method provided in this embodiment of the invention controls the operating level of the range hood by detecting the stove temperature and the rate of temperature change, so as to meet the different needs of users in various situations.

[0270] Figure 9 This is a schematic diagram of the structure of a control device for a range hood provided in an embodiment of the present invention. (Refer to...) Figures 1-4 and Figure 9 The range hood includes an air guide plate 12, a first detection component 20, and a second detection component 30. The first detection component 20 and the second detection component 30 are located in the spaces on opposite sides of the air guide plate 12. When the air guide plate is closed, it blocks the space between the first detection component 20 and the cooktop 200. When the air guide plate is open, it blocks the space between the second temperature measuring component and the cooktop 200. The specific structure of the range hood and the installation positions of the first detection component 20 and the second detection component 30 can be referred to in the above embodiment, and will not be repeated here.

[0271] The control device includes:

[0272] The first temperature measuring module 101 is used to detect the first temperature of the stove 200 using the first detection component 20 in standby mode.

[0273] Specifically, in standby mode, when the air guide plate 12 is closed, the air guide plate 12 blocks the space between the second detection component 30 and the stove 200. At this time, the first temperature measurement module 101 uses the first detection component 20 to detect the first temperature T1 of the stove 200.

[0274] The first rate of change calculation module 102 is used to calculate the rate of change of the first temperature over time based on the first temperature of the stove 200 detected in real time, and to obtain the first temperature change rate.

[0275] Specifically, the rate of change of the first temperature over a specific time period can be preset. Then, by calculating this rate of change, the first temperature change rate δ1 is obtained. The first temperature change rate δ1 is essentially used to determine whether a high-temperature object exists near the cooktop 200 when the range hood is in standby mode. If the first temperature change rate δ1 is greater than zero, it indicates that the temperature near the cooktop 200 is continuously rising during this time period, indicating that the user is cooking with the cooktop 200. If the first temperature change rate δ1 is less than or equal to zero, it indicates that the temperature in the area around the cooktop 200 remains constant or continues to decrease during this time period, indicating that the cooktop 200 is not in an ignition state. Based on the first temperature change rate δ1, the working status of the cooktop 200 can be more accurately understood, allowing for further control.

[0276] The state control module 103 is used to control whether the range hood switches from standby state to on state based on the first temperature and the first temperature change rate; wherein, in the standby state, the air guide plate 12 is in the closed state; in the on state, the air guide plate 12 is in the open state.

[0277] Specifically, based on the comparison between the first temperature T1 of the cooktop 200 and the preset temperature, and the comparison between the first temperature change rate δ1 and the preset standard, the state control module 103 controls whether the range hood switches from standby state to on state.

[0278] The second temperature measuring module 104 is used to detect the second temperature of the stove 200 using the second detection component 30 when the stove is powered on.

[0279] Specifically, when the first temperature detected by the first detection component 20 is higher than the set temperature, and the range hood is in the on state, the air guide plate 12 is in the open state. The air guide plate 12 blocks the first temperature measuring component 20 and the stove 200. At this time, the second temperature measuring module 103 uses the second detection component 30 to start detecting the second temperature T2 of the stove 200.

[0280] The second rate of change calculation module 105 is used to calculate the rate of change of the second temperature over time based on the real-time detected second temperature of the stove 200, and obtain the second temperature change rate.

[0281] Specifically, the rate of change of the second temperature over a specific time period can be preset. The rate of change is then calculated to obtain the second temperature change rate. Essentially, this rate of change is used to determine whether a high-temperature object exists near the cooktop 200 when the range hood is on. If the second temperature change rate δ2 is greater than zero, it indicates that the temperature near the cooktop 200 is continuously rising during this time period, suggesting the user is cooking with the cooktop 200. If the second temperature change rate δ2 is less than or equal to zero, it indicates that the temperature in the area around the cooktop 200 remains constant or continues to decrease during this time period, suggesting the cooktop 200 is not in an ignition state. Based on the second temperature change rate δ2, the operating status of the cooktop 200 can be more accurately understood, allowing for further control.

[0282] The state switching module 103 is also used to control the working level of the range hood and whether the range hood switches from the on state to the standby state based on the second temperature of the cooktop 200.

[0283] Specifically, the rate of change of the second temperature over a specific time period can be preset. The rate of change is then calculated to obtain the second temperature change rate. Essentially, this rate of change is used to determine whether a high-temperature object exists near the cooktop 200 when the range hood is on. If the second temperature change rate δ2 is greater than zero, it indicates that the temperature near the cooktop 200 is continuously rising during this time period, suggesting the user is cooking with the cooktop 200. If the second temperature change rate δ2 is less than or equal to zero, it indicates that the temperature in the area around the cooktop 200 remains constant or continues to decrease during this time period, suggesting the cooktop 200 is not in an ignition state. Based on the second temperature change rate δ2, the operating status of the cooktop 200 can be more accurately understood, allowing for further control.

[0284] The control device for a range hood provided in this embodiment of the invention uses a first temperature measuring module to detect the first temperature of the cooktop using a first detection component in standby mode; then, a first rate of change calculation module calculates the rate of change of the first temperature over time based on the real-time detected first temperature of the cooktop to obtain the first temperature change rate; a state control module controls whether the range hood switches from standby mode to on mode based on the first temperature and the first temperature change rate; a second temperature measuring module detects the second temperature of the cooktop using a second detection component in on mode; a second rate of change calculation module calculates the rate of change of the second temperature over time based on the real-time detected second temperature of the cooktop to obtain the second temperature change rate; finally, a state switching module controls the working level of the range hood and whether the range hood switches from on mode to standby mode based on the second temperature of the cooktop. The above technical solution utilizes a first detection module and a second detection module to detect the stove temperature to determine whether cooking is taking place. It also detects the first and second temperature change rates to improve the accuracy of determining whether cooking is occurring. Furthermore, the control module intelligently controls the switching of the range hood's operating state, as well as the operation of alarm and cooling devices. This allows the range hood to intelligently respond to different states, facilitating user use, providing convenience, protecting user health, and improving the user's quality of life.

[0285] Optionally, the status control module 103 includes:

[0286] The first state control unit is used to control the range hood to remain in standby mode when the first temperature of the cooktop 200 is within the first temperature range.

[0287] The second state control unit is used to control whether the range hood switches from standby state to on state according to the first temperature change rate when the first temperature of the stove 200 is in the second temperature range.

[0288] Optionally, the second state control unit includes:

[0289] The first control module is used to control the range hood to remain in standby mode when the first temperature change rate is within the first change rate range.

[0290] The second control module is used to control the range hood to switch from standby mode to on mode when the first temperature change rate is within the second change rate range.

[0291] Optionally, the first rate of change calculation module 102 includes:

[0292] The first rate of change calculation unit is used to calculate the first temperature change rate δ1 according to the temperature change rate formula δ1=(T1'-T1) / t1; where T1 and T1' are two first temperature values ​​of the stove 200 obtained by the first detection component in sequence at a first preset time interval t1.

[0293] Optionally, the second temperature measurement module 104 includes:

[0294] The first temperature measuring unit is used to detect the temperature of the first burner head 201 in real time using the first infrared temperature measuring sensor when the machine is powered on, and to detect the temperature of the second burner head 202 in real time using the second infrared temperature measuring sensor.

[0295] The second rate of change calculation module 105 includes:

[0296] The second rate of change calculation unit is used to calculate the rate of change of the first furnace head temperature over time based on the real-time detected first furnace head temperature, and obtain the rate of change of the first furnace head temperature.

[0297] The third rate of change calculation unit is used to calculate the rate of change of the second burner temperature over time based on the real-time detected second burner temperature, and obtain the rate of change of the second burner temperature.

[0298] The state switching module 103 includes:

[0299] The third state control unit is used to control the working level of the range hood and whether the range hood switches from the on state to the standby state based on the temperature of the first burner, the temperature of the second burner, the temperature change rate of the first burner, and the temperature change rate of the second burner.

[0300] Optionally, the third state control unit includes:

[0301] The first state control module is used to control the range hood to switch from the on state to the standby state when both the first burner temperature and the second burner temperature are in the third temperature range.

[0302] The second state control module is used to control the working level of the range hood according to the temperature change rate of the first burner and / or the temperature change rate of the second burner when the temperature of the first burner and / or the second burner reaches the fourth temperature range.

[0303] Optionally, the second state control module includes:

[0304] The first state control submodule is used to control the range hood to switch to standby state when both the first burner temperature change rate and the second burner temperature change rate are within the first change rate range.

[0305] The second state control submodule is used to control the range hood to operate at the range hood speed corresponding to the temperature sub-range when the first burner temperature change rate and / or the second burner temperature change rate are in the second change rate range, based on the temperature sub-range where the first burner temperature and / or the second burner temperature are located when the fourth temperature range is reached.

[0306] Optional, the second state control submodule includes:

[0307] The first state control subunit is used to control the range hood to operate at the first gear when the first burner temperature and / or the second burner temperature reach the first temperature sub-range.

[0308] The second state control subunit is used to control the range hood to operate at the second setting when the first burner temperature and / or the second burner temperature reach the second temperature sub-range.

[0309] The third state control subunit is used to control the range hood to operate at the third setting when the first burner temperature and / or the second burner temperature reach the third temperature sub-range.

[0310] Optionally, the first state control module includes:

[0311] The first control unit is used to calculate the temperature change rate δ21 of the first burner head according to the temperature change rate formula δ21=(T21'-T21) / t2; where T21 and T21' are two first burner head temperature values ​​of the first burner head 201 obtained by the first infrared temperature sensor in sequence at a second preset time interval t2.

[0312] The second state control module includes:

[0313] The second control unit is used to calculate the temperature change rate δ22 of the second burner head according to the temperature change rate formula δ22=(T22'-T22) / t2; where T22 and T22' are two second burner head temperature values ​​of the second burner head 202 obtained by the second infrared temperature sensor in sequence at a second preset time interval t2.

[0314] The control device for the range hood provided in this embodiment of the invention can execute the control method for the range hood provided in any embodiment of the invention, and has the corresponding functions and beneficial effects of the method.

[0315] Figure 10 This is a structural block diagram of a range hood provided in an embodiment of the present invention, as shown below. Figure 10 As shown, the range hood provided in this embodiment of the invention can execute the control method of the range hood provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method. The range hood includes:

[0316] At least one processor; and

[0317] A memory that is communicatively connected to at least one processor; wherein,

[0318] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor can perform the control method of the range hood in any of the above embodiments.

[0319] Figure 10 A schematic diagram of a range hood 40, which can be used to implement embodiments of the present invention, is shown. The range hood is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The range hood can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0320] like Figure 10 As shown, the range hood 40 includes at least one processor 41 and a memory, such as a read-only memory (ROM) 42 and a random access memory (RAM) 43, communicatively connected to the at least one processor 41. The memory stores computer programs executable by the at least one processor. The processor 41 can perform various appropriate actions and processes based on the computer program stored in the ROM 42 or loaded from storage unit 48 into the RAM 43. The RAM 43 can also store various programs and data required for the operation of the range hood 40. The processor 41, ROM 42, and RAM 43 are interconnected via a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0321] Multiple components in the range hood 40 are connected to the I / O interface 45, including: an input unit 46, such as a keyboard, mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a disk, optical disk, etc.; and a communication unit 49, such as a network card, modem, wireless transceiver, etc. The communication unit 49 allows the range hood 40 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0322] Processor 41 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 41 performs the various methods and processes described above, such as the control methods for a range hood.

[0323] In some embodiments, the control method for the range hood may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program may be loaded into and / or installed onto the range hood 40 via ROM 42 and / or communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the control method for the range hood described above may be performed. Alternatively, in other embodiments, processor 41 may be configured to perform the control method for the range hood by any other suitable means (e.g., by means of firmware).

[0324] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0325] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0326] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0327] To provide user interaction, the systems and techniques described herein can be implemented on a range hood that includes: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the range hood. Other types of devices can also be used to provide user interaction; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0328] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0329] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0330] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0331] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A control method for a range hood, characterized in that, The range hood includes an air guide plate (12), a first detection component (20), and a second detection component (30); the first detection component (20) and the second detection component (30) are respectively located in the space on opposite sides of the air guide plate (12); When the air guide plate (12) is in the closed state, the air guide plate (12) blocks the second detection component (30) and the stove (200); when the air guide plate (12) is in the open state, the air guide plate (12) blocks the first detection component (20) and the stove (200). The first detection component (20) is disposed on the smoke collection component (10) or the air guide plate (12). When the air guide plate (12) is in the closed state, the air guide plate (12) is in the closed position without blocking the first detection component (20). The second detection component (30) is disposed on the smoke collection component (10) or the air guide plate (12); when the air guide plate (12) is in the open state, the air guide plate (12) flips forward; The control method includes: In standby mode, the first temperature of the stove (200) is detected in real time using the first detection component (20); Based on the first temperature of the stove (200) detected in real time, the rate of change of the first temperature over time is calculated to obtain the first temperature change rate; Based on the first temperature and the first temperature change rate, the range hood is controlled to switch from standby mode to on mode; wherein, in the standby mode, the air guide plate (12) is in a closed state; in the on mode, the air guide plate (12) is in an open state. When the appliance is powered on, the second detection component (30) is used to detect the second temperature of the stove (200) in real time; Based on the real-time detected second temperature of the stove (200), the rate of change of the second temperature over time is calculated to obtain the second temperature change rate; Based on the second temperature and the second temperature change rate, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled.

2. The control method according to claim 1, characterized in that, Based on the first temperature and the first temperature change rate, controlling whether the range hood switches from standby mode to on mode includes: When the first temperature of the stove (200) is in the first temperature range, the range hood is controlled to remain in standby mode. When the first temperature of the stove (200) is in the second temperature range, the range hood is controlled to switch from standby mode to on mode according to the first temperature change rate. The temperature value in the first temperature range is less than the temperature value in the second temperature range.

3. The control method according to claim 2, characterized in that, Based on the first temperature change rate, controlling whether the range hood switches from standby mode to on mode includes: When the first temperature change rate is within the first change rate range, the range hood is controlled to remain in standby mode; When the first temperature change rate is within the second change rate range, the range hood is controlled to switch from standby mode to on mode; Wherein, the rate of change value within the first rate of change interval is less than the rate of change value within the second rate of change interval.

4. The control method according to claim 1, characterized in that, Based on the real-time detected first temperature of the stove (200), the rate of change of the first temperature over time is calculated to obtain the first temperature change rate, including: The first temperature change rate δ1 is calculated according to the temperature change rate formula δ1=(T1'-T1) / t1; where T1 and T1' are two first temperature values ​​of the stove (200) obtained by the first detection component (20) in sequence at a first preset time interval t1.

5. The control method according to claim 2, characterized in that, The second detection component (30) includes a first infrared temperature sensor and a second infrared temperature sensor. The stove (200) includes a first burner (201) and a second burner (202). The first infrared temperature sensor faces the first burner (201), and the second infrared temperature sensor faces the second burner (202). The second temperature includes the temperature of the first burner and the temperature of the second burner. When the appliance is powered on, the second detection component (30) is used to detect the second temperature of the stove (200) in real time, including: When the machine is powered on, the temperature of the first burner (201) is detected in real time using the first infrared temperature sensor, and the temperature of the second burner (202) is detected in real time using the second infrared temperature sensor. Based on the real-time detected second temperature of the stove (200), the rate of change of the second temperature over time is calculated to obtain the second temperature change rate, including: Based on the real-time detected temperature of the first burner head, the rate of change of the temperature of the first burner head over time is calculated to obtain the rate of change of the temperature of the first burner head. Based on the real-time detected temperature of the second burner head, the rate of change of the temperature of the second burner head over time is calculated to obtain the rate of change of the temperature of the second burner head. Based on the second temperature and the second temperature change rate, controlling the operating level of the range hood and whether the range hood switches from the on state to the standby state includes: Based on the temperature of the first burner head, the temperature of the second burner head, and the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled.

6. The control method according to claim 5, characterized in that, The temperature range includes a third temperature range and a fourth temperature range, wherein the temperature value in the third temperature range is lower than the temperature value in the fourth temperature range. Based on the temperatures of the first and second burners, as well as the rates of change of the first and second burner temperatures, the operating level of the range hood and whether the range hood switches from the on state to the standby state are controlled, including: When both the first burner temperature and the second burner temperature are within the third temperature range, the range hood is controlled to switch from the on state to the standby state. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, the operating level of the range hood is controlled according to the temperature change rate of the first burner head and / or the temperature change rate of the second burner head.

7. The control method according to claim 6, characterized in that, When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, the operating level of the range hood is controlled according to the rate of change of the first burner head temperature and / or the rate of change of the second burner head temperature, including: When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, and when the rate of change of the temperature of the first burner head and the rate of change of the temperature of the second burner head are both within the first rate of change range, the range hood is controlled to switch to standby mode. When the first burner temperature and / or the second burner temperature reach the fourth temperature range, and when the change rate of the first burner temperature and / or the change rate of the second burner temperature are in the second change rate range, the range hood is controlled to operate at the range hood setting corresponding to the temperature sub-range where the first burner temperature and / or the second burner temperature that reaches the fourth temperature range are located. Wherein, the rate of change value within the first rate of change interval is less than the rate of change value within the second rate of change interval.

8. The control method according to claim 7, characterized in that, The range hood has three speed settings: a first speed setting, a second speed setting, and a third speed setting. The operating power of the first speed setting, the second speed setting, and the third speed setting increases sequentially. The fourth temperature range includes a first temperature sub-range, a second temperature sub-range, and a third temperature sub-range; the temperature values ​​of the first temperature sub-range, the second temperature sub-range, and the third temperature sub-range increase sequentially. When the first burner temperature and / or the second burner temperature reach the fourth temperature range, and when the rate of change of the first burner temperature and / or the rate of change of the second burner temperature are within the second rate of change range, the range hood is controlled to operate at the range hood setting corresponding to the temperature sub-range where the first burner temperature and / or the second burner temperature reaches the fourth temperature range, including: When the first burner temperature and / or the second burner temperature reach the fourth temperature range, when the change rate of the first burner temperature and / or the change rate of the second burner temperature are in the second change rate range, and when the first burner temperature and / or the second burner temperature reach the first temperature sub-range, the range hood is controlled to operate at the first gear. When the temperature of the first burner head and / or the temperature of the second burner head reach the fourth temperature range, when the rate of change of the first burner head temperature and / or the rate of change of the second burner head temperature are in the second rate of change range, and when the temperature of the first burner head and / or the temperature of the second burner head reach the second temperature sub-range, the range hood is controlled to operate at the second gear. When the first burner temperature and / or the second burner temperature reach the fourth temperature range, when the change rate of the first burner temperature and / or the change rate of the second burner temperature are in the second change rate range, and when the first burner temperature and / or the second burner temperature reach the third temperature sub-range, the range hood is controlled to operate at the third gear.

9. The control method according to claim 5, characterized in that, Based on the real-time detected temperature of the first burner head, the rate of change of the first burner head temperature over time is calculated to obtain the rate of change of the first burner head temperature, including: According to the temperature change rate formula δ21=(T21'-T21) / t2, the temperature change rate δ21 of the first burner head is calculated; where T21 and T21' are two first burner head temperature values ​​of the first burner head (201) obtained by the first infrared temperature sensor in sequence at a second preset time interval t2. Based on the real-time monitored temperature of the second burner head, the rate of change of the second burner head temperature over time is calculated to obtain the rate of change of the second burner head temperature, including: The temperature change rate δ22 is calculated according to the temperature change rate formula δ22=(T22'-T22) / t2; where T22 and T22' are two second burner head temperature values ​​of the second burner head (202) obtained by the second infrared temperature sensor in sequence at a second preset time interval t2.

10. The control method according to claim 6, characterized in that, The first temperature range is the same as the third temperature range, and the second temperature range is the same as the fourth temperature range.

11. A control device for a range hood, characterized in that, The range hood is controlled by the control method of any one of claims 1-10. The range hood includes a guide plate (12), a first detection component (20), and a second detection component (30). The first detection component (20) and the second detection component (30) are respectively located in the space on opposite sides of the guide plate (12). When the guide plate (12) is in the closed state, the guide plate (12) blocks the second detection component (30) and the cooktop (200). When the guide plate (12) is in the open state, the guide plate (12) blocks the first detection component (20) and the cooktop (200). The control device includes: The first temperature measuring module is used to detect the first temperature of the stove (200) using the first detection component (20) in standby mode; The first rate of change calculation module is used to calculate the rate of change of the first temperature over time based on the first temperature of the stove (200) detected in real time, and obtain the first temperature change rate. The status control module is used to control whether the range hood switches from standby state to on state based on the first temperature and the first temperature change rate; wherein, in the standby state, the air guide plate (12) is in a closed state; in the on state, the air guide plate (12) is in an open state. The second temperature measuring module is used to detect the second temperature of the stove (200) using the second detection component (30) when the stove is powered on. The second rate of change calculation module is used to calculate the rate of change of the second temperature over time based on the second temperature of the stove (200) detected in real time, and to obtain the second temperature change rate. The status control module is also used to control the working level of the range hood and whether the range hood switches from the on state to the standby state according to the second temperature of the stove (200).

12. The control device according to claim 11, characterized in that, The range hood also includes a smoke collection assembly (10); the air guide plate (12) is connected to the smoke collection assembly (10) and can switch between a closed state and an open state; The first detection component (20) and the second detection component (30) are both disposed on the air guide plate (12) and are respectively located on the two opposite sides of the air guide plate (12); the detection area of ​​the first detection component (20) faces the outside of the air guide plate (12), and the detection area of ​​the second detection component (30) faces the inside of the air guide plate (12); In the closed state, the air guide plate (12) is in the closed position, and the first detection component (20) can obtain whether the stove (200) in the detection area is ignited; in the open state, the air guide plate (12) flips forward, and the second detection component (30) can obtain whether the stove (200) in the detection area is turned off.

13. The control device according to claim 11, characterized in that, The range hood also includes a smoke collection assembly (10); the air guide plate (12) is connected to the smoke collection assembly (10) and can switch between a closed state and an open state; The first detection component (20) is disposed on the smoke collection component (10) or the air guide plate (12). When the air guide plate (12) is in the closed state, the air guide plate (12) is in the closed position without blocking the first detection component (20). The first detection component (20) can obtain whether the stove (200) in the detection area is ignited. The second detection component (30) is disposed on the smoke collection component (10) or the air guide plate (12); when the air guide plate (12) is in the open state, the air guide plate (12) flips forward, and the second detection component (30) can obtain whether the stove (200) in the detection area is turned off.

14. A range hood, characterized in that, The range hood includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the range hood according to any one of claims 1-10.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method for the range hood according to any one of claims 1-10.

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