Range hoods and their control methods, computer-readable storage media

Abstract

This invention discloses a range hood and its control method, as well as a computer-readable storage medium. The range hood includes: a main body; an air purification device with a purification duct, a filter, and a purification fan disposed within the purification duct; an air inlet communicating with the purification duct and an air outlet communicating with the purification duct on the outer surface of the main body; and a controller electrically connected to both the main body and the air purification device. The controller controls the start / stop status of the main body and the air purification device based on the burner operating information of the corresponding stove. This invention enables the automatic activation of the main body and / or the air purification device based on burner operating information, thus preventing users from forgetting to turn on the main body and / or the air purification device, which could lead to the spread of cooking fumes in the kitchen, causing pollution and harm to human health.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a range hood and its control method, as well as a computer-readable storage medium. Background Technology

[0002] Cooking produces fumes that not only pollute the air but also harm human health. Traditional range hoods can quickly expel these fumes outdoors, reducing pollution in the kitchen and its health risks. However, some fumes inevitably escape from traditional range hoods and spread into the kitchen space during cooking. These escaped fumes still contribute to pollution and harm to health. Summary of the Invention

[0003] To further reduce the pollution of kitchen air and the harm to human health caused by cooking fumes, the range hood of this invention adds an air purification device to the main body of the hood. This device draws in and purifies the cooking fumes that have escaped into the kitchen space. However, both the main body of the hood and the air purification device usually need to be manually turned on. If the user forgets to turn them on, the cooking fumes will spread throughout the kitchen, causing pollution and harm to human health.

[0004] The main objective of this invention is to provide a range hood that automatically activates its main body and / or air purification device, thereby enhancing the intelligence of the range hood.

[0005] To achieve the above objectives, the range hood proposed in this invention includes:

[0006] The main body of the range hood; and

[0007] An air purification device is provided with a purification duct, and a filter and a purification fan installed in the purification duct;

[0008] The outer surface of the main body of the range hood is provided with an air inlet connected to the purification air duct and an air outlet connected to the purification air duct.

[0009] The controller is electrically connected to both the main body of the range hood and the air purification device.

[0010] The controller is used to control the start / stop status of the range hood body and the air purification device according to the burner working information of the stove corresponding to the range hood.

[0011] On the one hand, through the coordinated work of the air purification device and the main body of the range hood, most of the cooking fumes can be discharged outdoors, and a small portion can be circulated and purified to remove them, thereby further reducing the pollution of the air environment and the harm to human health caused by cooking fumes; on the other hand, the main body of the range hood and / or the air purification device are automatically turned on according to the working information of the burner, thereby preventing users from forgetting to turn on the main body of the range hood and / or the air purification device, which would cause the cooking fumes to spread in the kitchen space, resulting in oil fume pollution and harm to human health.

[0012] Optionally, the cooktop includes at least two burners. If it is determined that one burner is in a cooking state based on the burner's operating information, the controller controls the main body of the range hood to start running and controls the air purification device to stop running.

[0013] In this way, the air purification device can be accurately stopped based on the burner's operating information, thereby reducing the range hood's energy consumption.

[0014] Optionally, when the duration of operation of the main body of the range hood reaches a first preset duration, the controller controls the air purification device to start operation.

[0015] In this way, the air purifier and the main body of the range hood can work together to purify kitchen fumes, improving the fume extraction efficiency of the main body of the range hood.

[0016] Optionally, the cooktop includes at least two burners. If it is determined based on the burner operating information that both burners are in a cooking state, the controller controls the main body of the range hood and the air purification device to start operation.

[0017] In this way, the air purification device can be accurately activated and operated based on the burner's operating information, thereby improving the fume extraction efficiency of the range hood.

[0018] Optionally, the stove includes at least two burners. If the number of burners in cooking mode is reduced to one based on the burner operation information, the controller controls the air purification device to stop operating when the duration after the current moment reaches a second preset duration.

[0019] In this way, by delaying the shutdown of the air purification device, the energy consumption of the range hood is reduced while the fume extraction effect of the main body of the range hood is improved.

[0020] Optionally, if it is determined based on the burner operating information that the stove has stopped cooking, then when the duration after the current moment reaches a third preset duration, the controller controls the main body of the range hood and the air purification device to stop operating.

[0021] In this way, by delaying the shutdown of the main body of the range hood and the air purification device, the fumes in the kitchen can be completely purified.

[0022] Optionally, the main body of the range hood includes a decorative cover and a smoke collection cover located below the decorative cover, and the decorative cover is provided with an oil fume duct.

[0023] Concealing the air purification device within a decorative cover can make the range hood look more streamlined.

[0024] Optionally, the air inlet is located on the side of the decorative cover; or,

[0025] The air inlet is located at the upper part of the front of the decorative cover; or,

[0026] The air inlet is located at the top of the main body of the smoke hood.

[0027] Thus, the air inlet is located on the upper part of the front of the decorative cover or on the top of the range hood body, which is conducive to the intake of oil fumes that accumulate in the upper space of the kitchen due to the thermal plume effect.

[0028] Optionally, the air outlet is located on the front of the decorative cover; or,

[0029] The air outlet is located on the side of the decorative cover; or,

[0030] The air outlet is located at the top of the main body of the range hood; or,

[0031] The air outlet is located at the bottom of the main body of the range hood.

[0032] Thus, the air outlet is located on the side of the decorative cover or at the bottom of the range hood body, which also enables the exhaust of purified air.

[0033] This invention also proposes a control method for a range hood, applicable to the aforementioned range hood, comprising the following steps:

[0034] Real-time acquisition of burner operating information of the stove corresponding to the range hood;

[0035] The start / stop status of the main body of the flue and the air purification device is controlled based on the working information of the burner head.

[0036] On the one hand, through the coordinated work of the air purification device and the main body of the range hood, most of the cooking fumes can be discharged outdoors, and a small portion can be circulated and purified to remove them, thereby further reducing the pollution of the air environment and the harm to human health caused by cooking fumes; on the other hand, the main body of the range hood and / or the air purification device are automatically turned on according to the working information of the burner, thereby preventing users from forgetting to turn on the main body of the range hood and / or the air purification device, which would cause the cooking fumes to spread in the kitchen space, resulting in oil fume pollution and harm to human health.

[0037] Optionally, the cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes:

[0038] If a burner is determined to be in a cooking state based on the burner operating information, the main body of the range hood is controlled to start operation and the air purification device is controlled to stop operation.

[0039] In this way, the air purification device can be accurately stopped based on the burner's operating information, thereby reducing the range hood's energy consumption.

[0040] Optionally, after the steps of controlling the main body of the range hood to start operation and controlling the air purification device to stop operation, the method further includes:

[0041] When the duration of operation of the main body of the range hood reaches a first preset duration, the air purification device is controlled to start operation.

[0042] In this way, the air purifier and the main body of the range hood can work together to purify kitchen fumes, improving the fume extraction efficiency of the main body of the range hood.

[0043] Optionally, the cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes:

[0044] If it is determined based on the burner operating information that both burners are in cooking mode, the controller controls the main body of the range hood and the air purification device to start operation.

[0045] In this way, the air purification device can be accurately activated and operated based on the burner's operating information, thereby improving the fume extraction efficiency of the range hood.

[0046] Optionally, the cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes:

[0047] If, based on the burner operating information, it is determined that the number of burners in cooking mode is reduced to one, then when the duration after the current moment reaches the second preset duration, the controller controls the air purification device to stop operating.

[0048] In this way, by delaying the shutdown of the air purification device, the energy consumption of the range hood is reduced while the fume extraction effect of the main body of the range hood is improved.

[0049] Optionally, the step of controlling the start / stop status of the flue gas hood and the air purification device based on the burner operating information includes:

[0050] If the stove is determined to stop cooking based on the burner operating information, the controller will control the range hood and the air purification device to stop operating when the duration after the current moment reaches a third preset duration.

[0051] In this way, by delaying the shutdown of the main body of the range hood and the air purification device, the fumes in the kitchen can be completely purified.

[0052] The present invention also proposes a computer-readable storage medium storing a control program for a range hood, wherein the control program for the range hood, when executed by a processor, implements the steps of the aforementioned control method for the range hood.

[0053] The range hood of this invention, on the one hand, adds an air purification device to the main body of the range hood. Thus, when the air purification device and the main body of the range hood work together, most of the cooking fumes can be exhausted outdoors through the fume extraction duct. A small portion of the fumes will escape to other spaces in the kitchen, where it can be further removed through the purification duct, thereby further reducing air pollution and harm to human health. On the other hand, the range hood and / or air purification device are automatically turned on based on the burner's operating information, thus preventing users from forgetting to turn them on, which could lead to the spread of cooking fumes in the kitchen, causing pollution and harm to human health. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the structure of an embodiment of the range hood of the present invention from one perspective;

[0055] Figure 2 for Figure 1 A schematic diagram of the structure of a center-mounted range hood after the decorative cover and filter have been removed;

[0056] Figure 3 for Figure 1 Exploded structural diagram of a center-draft range hood;

[0057] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0058] Figure 5 for Figure 1 A partial cross-sectional structural diagram of a center-draft range hood from another perspective;

[0059] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0060] Figure 7 for Figure 1A partial cross-sectional structural diagram of a center-suction range hood from another perspective;

[0061] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0062] Figure 9 for Figure 1 A schematic diagram of the air circulation path of a center-draft range hood;

[0063] Figure 10 This is a flowchart illustrating the first embodiment of the control method for the range hood of the present invention.

[0064] Explanation of icon numbers:

[0065]

[0066]

[0067] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0068] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0069] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0070] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0071] This invention proposes a range hood.

[0072] Reference Figures 1 to 3 In one embodiment of the present invention, the range hood includes:

[0073] Range hood body 1; and

[0074] The air purification device 2 is provided with a purification air duct, and a filter element 22 and a purification fan 23 installed in the purification air duct;

[0075] The outer surface of the main body 1 of the range hood is provided with an air inlet 111 that communicates with the purification air duct and an air outlet 112 that communicates with the purification air duct.

[0076] The controller 3 is electrically connected to both the main body 1 of the range hood and the air purification device 2.

[0077] The controller 3 is used to control the start / stop status of the range hood body 1 and the air purification device 3 according to the burner working information of the stove 5 corresponding to the range hood.

[0078] In this embodiment, the main body 1 of the range hood is equipped with a fume extraction duct. The purification duct of the air purification device 2 is not connected to the fume extraction duct, and a purification fan 23 is installed inside the purification duct. The inlet of the fume extraction duct connects to the indoor environment and is usually suspended above the stove 5 in the kitchen to facilitate the intake of fumes into the fume extraction duct. The exhaust outlet of the fume extraction duct connects to the outdoors to exhaust the fumes outdoors. Of course, a fume extraction fan is installed inside the fume extraction duct to direct the airflow from the inlet to the exhaust outlet. It can be understood that the main body 1 of the range hood has the functions of a traditional range hood.

[0079] The air purifier 2's purification fan 23 directs airflow from the air inlet 111 through the purification duct to the air outlet 112. Both the air inlet 111 and the air outlet 112 are connected to the interior. The air inlet 111 draws in air from the kitchen, the filter 22 of the air purifier 2 filters and purifies the inhaled air, and the air outlet 112 discharges the filtered and purified air back into the kitchen. When the air purifier 2 and the range hood 1 work together, most of the cooking fumes are discharged outdoors through the fume extraction duct. A small portion of the fumes escapes to other spaces in the kitchen, where it can be further removed through the purification duct of the air purifier 2, thereby further reducing air pollution and harm to human health.

[0080] In one embodiment, the cooktop 5 corresponding to the range hood refers to the cooktop located below the range hood. The cooktop is equipped with a signal transmitting module 51, which is used to transmit the burner working information corresponding to the burner of the cooktop 5. The controller 3 can obtain the signal transmitted by the signal transmitting module 51 in real time. For example, the main body of the range hood is equipped with a signal receiving module 4 that is communicatively connected to the signal transmitting module 51. The signal receiving module 4 is communicatively connected to the controller 3 to forward the received signal transmitted by the signal transmitting module 51 to the controller 3.

[0081] In this embodiment, the controller 3 can obtain the burner working information of the stove 5 corresponding to the range hood in real time. That is, the signal receiving module 4 forwards the received signal to the controller 3 in real time. Then, the controller 3 controls the start and stop status of the range hood body 1 and the air purification device 2 according to the burner working information. For example, after the power cord of the range hood is connected to the mains power, if the user forgets to turn on the range hood body 1 and the air purification device 2 while cooking, and the range hood body 1 and the air purification device 2 are both in the off state, the controller 3 determines the need to turn on the range hood body 1 and / or the air purification device 2 through the burner working information. When there is a need to turn on, the controller controls the range hood body 1 and / or the air purification device 2 to turn on automatically, thereby avoiding the situation where the user forgets to turn on the range hood body 1 and / or the air purification device 2, causing the cooking fumes to spread in the kitchen space, resulting in oil fume pollution and harm to human health.

[0082] Furthermore, in one embodiment, the cooktop 5 includes at least two burners. If it is determined based on the burner operating information that one burner is in a cooking state, the controller controls the main body of the range hood to start running and controls the air purification device to stop running.

[0083] The cooktop 5 may include a left burner and a right burner. Burner operating information indicates whether either the left or right burner is in cooking mode, meaning only one burner is currently cooking. In this case, the controller 3 controls the range hood body 1 to start operating and the air purification device 2 to stop operating. Since only one burner is currently cooking, the amount of oil fumes produced is relatively small, and the range hood body 1 can effectively purify the fumes. Therefore, stopping the air purification device 2 achieves intelligent control of the range hood, reducing its energy consumption. Specifically, if both the range hood body 1 and the air purification device 2 are currently off, the controller 3 controls the range hood body 1 to start operating; if both are currently running, the controller 3 controls the air purification device 2 to stop operating. Optionally, the controller controls the range hood body to start operating according to preset operating parameters. The first preset operating parameter can be a preset speed setting or a preset power level, for example, the first preset operating parameter is the medium speed setting. By controlling the main body 1 of the range hood according to the first preset working parameters, the range hood main body 1 can be accurately controlled, thereby reducing the energy consumption of the range hood.

[0084] Optionally, when the duration of operation of the main body of the range hood reaches a first preset duration, the controller controls the air purification device to start operation.

[0085] In this embodiment, after the main body 1 of the range hood starts operating, the duration of operation of the main body 1 is obtained. This duration is the time during which the main body 1 of the range hood is in operation and the air purification device 2 is in a stopped state. If this duration reaches a first preset duration, the controller 3 controls the air purification device 2 to start operating. This allows the air purification device 2 to be activated after the stove 5 has been cooking for a period of time, enabling internal circulation purification of the kitchen environment. This allows the air purification device 2 and the main body 1 of the range hood to purify kitchen fumes together, improving the fume extraction effect of the main body 1 of the range hood. The first preset duration can be set reasonably, for example, it can be 5 minutes.

[0086] Furthermore, in one embodiment, the cooktop 5 includes at least two burners. If it is determined based on the burner operating information that both burners are in a cooking state, the controller controls the main body of the range hood and the air purification device to start operation.

[0087] In this embodiment, the burner operating information includes both the left and right burners being in cooking mode, meaning both burners are in cooking mode. At this time, the controller 3 controls the range hood body 1 and the air purification device 2 to start operation. Since both burners are currently in cooking mode, they produce a lot of oil fumes. The range hood body 1 and the air purification device 2 work together to purify the kitchen fumes, improving the purification efficiency and thus enhancing the fume extraction effect of the range hood body 1. For example, if only one burner in the stove 5 is in cooking mode when the range hood body 1 starts, and the user starts cooking with the other burner during the cooking process (i.e., both burners are in cooking mode), then the controller 3 controls the air purification device 2 to turn on when it is in a stopped state.

[0088] However, this design is not limited to this. In other embodiments, the stove 5 includes at least two burners. If the number of burners in the cooking state is reduced to one based on the burner working information, the controller controls the air purification device to stop operating when the duration after the current moment reaches the second preset duration.

[0089] In this embodiment, if the number of burners in cooking mode is reduced to one based on the burner operation information (i.e., one of the two burners in cooking mode in the stove 5 is turned off), then when the duration after the current moment reaches the second preset duration, the controller 3 controls the air purification device 2 to stop operating. For example, if the user reduces the number of burners used during the cooking process of the stove 5, the air purification device 2 can be delayed to stop operating, thereby improving the purification efficiency of oil fumes in the kitchen and improving the oil fume extraction effect of the range hood body 1 while reducing the energy consumption of the range hood. The second preset duration can be reasonably set, for example, the second preset duration is 5 minutes.

[0090] Alternatively, in another embodiment, if it is determined based on the burner operating information that the stove 5 has stopped cooking, then when the duration after the current moment reaches a third preset duration, the controller controls the range hood body and the air purification device to stop operating.

[0091] In this embodiment, if the controller 3 determines that the stove 5 has stopped cooking based on the burner operating information (i.e., when all burners determined by the controller 3 based on the burner operating information have stopped cooking), then when the duration after the current moment reaches a third preset duration, the controller 3 controls the range hood body 1 and the air purification device 2 to stop operating. This achieves delayed control of the range hood body 1 and the air purification device 2 to stop operating, ensuring complete purification of the kitchen fumes. The third preset duration can be reasonably set, for example, 5 minutes, 10 minutes, etc.

[0092] Optionally, the main body 1 of the range hood includes a decorative cover 11 and a smoke collection hood 12 disposed below the decorative cover 11. The decorative cover 11 is provided with a fume extraction duct, which is not connected to the purification duct. The air purification device 2 is disposed inside the decorative cover 11. In addition, in this embodiment, the air purification device 2 is hidden in the decorative cover 11 to share the same exterior components and simplify the structure of the range hood.

[0093] However, this design is not limited to this; in other embodiments, refer to Figure 2 The air purification device 2 can also be located outside the main body 1 of the range hood, for example, but not limited to, being fixed to the front of the decorative cover 11. In some other embodiments, the air purification device 2 may not be attached to the main body 1 of the range hood, that is, the air purification device 2 can be movable relative to the main body 1 of the range hood. In this case, the air purification device 2 can be connected to the main body 1 of the range hood via a power supply line so that the main body 1 of the range hood can supply it with power. Alternatively, the air purification device 2 may have its own power supply and can be powered by plugging it in independently.

[0094] Optionally, refer to Figure 1 The controller 3 is fixed to the main body 1 of the range hood. It is understood that the main body 1 of the range hood is generally larger than the air purification device 2, thus providing more and more convenient space for installing the controller 3. The controller 3 is typically wired to communicate with the exhaust fan of the main body 1 and the purification fan of the air purification device 2 to send start and stop signals to both. Alternatively, the controller 3 can also communicate wirelessly with the exhaust fan of the main body 1 and the purification fan of the air purification device 2. Specifically, in technical solutions where the air purification device 2 is movable relative to the main body 1 of the range hood, the controller 3 is typically wirelessly connected to the purification fan of the air purification device 2.

[0095] Optionally, refer to Figure 2 The first oil fume sensor 4 is located at the air inlet 111 of the air purifier 2. Thus, the first oil fume sensor 4 is used to monitor the concentration of oil fumes before the air purifier 2 filters, which helps to detect the escape and diffusion of cooking fumes and to determine in time whether the filter of the air purifier 2 has failed.

[0096] Optionally, the air inlet 111 is located on the side of the decorative cover 11 to facilitate the intake of cooking fumes escaping to the side of the range hood into the purification duct, thereby reducing the amount of cooking fumes on the side of the range hood. In particular, when a dual-burner range hood is used below the range hood, the cooking fumes generated during cooking are more likely to escape from the side of the range hood, and the air inlet 111 located on the side of the decorative cover 11 is more conducive to the intake of these fumes.

[0097] Optionally, each of the two opposite sides of the decorative cover 11 is provided with an air inlet 111 to reduce the amount of oil fumes on both sides of the range hood. Of course, the air inlet 111 may also be provided on only one of the two sides of the decorative cover 11. Optionally, the air inlet 111 is provided with an air intake grille to prevent hands and other foreign objects from entering the decorative cover 11.

[0098] Optionally, two filter elements 22 are provided, each filter element 22 being disposed near one of the air inlets 111; in this way, the air containing oil fumes can be filtered by the filter element 22 as soon as it enters the purification duct, reducing the probability of the oil-fumes-laden air contaminating other components in the purification duct. However, this design is not limited to this; in other embodiments, only one filter element 22 may be disposed near the air outlet 112, thus also achieving the goal of purifying the oil fumes in the air before discharge.

[0099] In this embodiment, the air inlet 111 is located on the side of the decorative cover 11; however, this design is not limited to this. In other embodiments, the air inlet 111 may also be located on the upper part of the front of the decorative cover 11 or on the top of the range hood body 1, so as to facilitate the intake of oil fumes accumulated in the upper space of the kitchen due to the thermal plume effect, thereby facilitating the air circulation and purification of the entire kitchen space. It should be noted that when the air inlet 111 is located on the top of the range hood body 1, it is usually located on the top plate of the range hood body 1 connected to the decorative cover 11; of course, in some other embodiments, when the top of the decorative cover 11 is bent with a wider top flange, the air inlet 111 may also be located on the top flange.

[0100] Optionally, the fume extractor fan of the range hood body 1 and the purification fan 23 of the air purification device 2 are connected to the same controller 3. That is, the range hood controls the range hood body 1 and the air purification device 2 through the same controller 3. However, this design is not limited to this. In other embodiments, the range hood may also be equipped with two different controllers 3 to control the fume extractor fan of the range hood body 1 and the purification fan 23 of the air purification device 2 respectively.

[0101] Optionally, a control switch is also included to control the purification fan 23 of the air purification device 2. This control switch is typically located on the fume hood 12. The fume exhaust fan of the range hood body 1 and the purification fan 23 of the air purification device 2 use different control switches to achieve independent start-up and shutdown control of the range hood body 1 and the air purification device 2, allowing users to use the fume exhaust and air purification functions of the range hood more flexibly. The control switch is typically electrically connected to the controller 3 to control the start-up and shutdown.

[0102] Reference Figures 1 to 3In one embodiment, the air outlet 112 is located on the front of the decorative cover 11; thus, when the purification fan 23 of the air purification device 2 is turned on, the air outlet 112 discharges air forward or at least has a forward air component. During cooking, the user usually stands in front of the range hood, and the space in front of the range hood can be defined as the user's breathing zone. It is understood that forward airflow is beneficial for delivering purified air to the user's breathing zone, thereby improving the air quality in the user's breathing zone, further reducing the probability of the user inhaling cooking fumes, and reducing the harm of cooking fumes to the user's health.

[0103] Optionally, the air outlet 112 is located at the lower part of the decorative cover 11; it can be understood that the lower part of the decorative cover 11 is closer to the user's breathing area, which is more conducive to delivering the purified air to the user's breathing area.

[0104] However, this design is not limited to this. In some other embodiments, the air outlet 112 can also be located on the top of the range hood body 1, which is conducive to pushing down the oil fumes accumulated in the upper space of the kitchen so that they can be sucked in and purified by the air purification device 2, thereby bringing the oil fumes in the upper part of the kitchen space into the air circulation purification, and further reducing the oil fumes in the kitchen. Similarly, the air outlet 112 is usually located on the top plate of the range hood body 1 connected to the decorative cover 11. Of course, when the top of the decorative cover 11 is bent with a wider top flange, the air inlet 111 can also be located on the top flange.

[0105] In other embodiments, the air outlet 112 can also be located on the side of the decorative cover 11 or at the bottom of the range hood body 1, thus achieving the discharge of purified air. It should be noted that when the air outlet 112 is located at the bottom of the range hood body 1, it is typically located at the bottom of the smoke collection hood 12; it can be understood that in this case, part of the purification air duct is still located within the smoke collection hood 12. Optionally, the air outlet 112's airflow direction is adjustable; thus, by changing its airflow direction, more airflow needs of the user can be met, such as meeting the direct or non-direct airflow needs of users of different heights.

[0106] Refer to together Figure 5 and Figure 6 Optionally, the air purification device 2 further includes a guide vane 100, which is rotatably disposed on the air outlet 112 to adjust the air outlet direction of the air outlet 112 by rotating the guide vane 100. The air outlet direction of the air outlet 112 is continuously adjustable. However, this design is not limited to this. In other embodiments, a guide frame for fixing the guide vane 100 may be installed on the air outlet 112, and multiple guide frames may be configured. The inclination angle of the guide vane 100 of different guide frames is different, and the air outlet direction of the air outlet 112 can be changed by replacing different guide frames.

[0107] When the air outlet 112 is located on the front of the decorative cover 11, for the technical solution where the air guide vane 100 is rotatable, optionally, the air guide vane 100 extends laterally, and during the rotation of the air guide vane 100, the angle between the air guide vane 100 and the horizontal plane ranges from -90° to 90°; it can be understood that when the angle between the air guide vane 100 and the horizontal plane is less than zero, it indicates that the air guide vane 100 is tilted downwards to guide the air, while when the angle between the air guide vane 100 and the horizontal plane is greater than or equal to zero, it indicates that the air guide vane 100 is tilted upwards to guide the air; in this embodiment, the air guiding direction of the air guide vane 100 can be continuously adjusted from nearly vertical downwards to nearly vertical upwards.

[0108] Further optionally, the angle between the guide vane 100 and the horizontal plane is in the range of -45° to 45°. Within this angle range, the air guiding direction of the guide vane 100 can take into account both the user's breathing area and the oil fume accumulation area above the front of the range hood, while ensuring a large ventilation rate of the air outlet 112. It can be understood that if the angle between the guide vane 100 and the horizontal plane is closer to -90° or 90°, the wind resistance generated by the guide vane 100 will be greater.

[0109] In other embodiments, the angle between the guide vane 100 and the horizontal plane can range from 30° to 75°. It can be understood that within this range of rotation, the guide vane 100 extends upwards at an angle. Thus, the air blown from the air outlet 112 is primarily transported in an upward-sloping direction, resulting in a large upward airflow component. This upward airflow component can push the fumes from the upper part of the kitchen space downwards, until they are drawn in and purified by the air inlet 111, thereby incorporating the fumes from the upper part of the kitchen space into the air circulation and purification process (e.g., ...). Figure 9 This can further reduce cooking fumes in the kitchen.

[0110] During cooking, cooking oil and food undergo a series of chemical reactions at high temperatures, including oxidation, cracking, and polymerization, evaporating a large amount of organic fumes. Some of these decomposition products are released into the air as oil mist, forming cooking fumes. Cooking fumes include not only cooking oil and its products of heating and decomposition or cracking, but also the products of physicochemical reactions involving proteins, macromolecules, and various seasonings in food. They are substances that exist in gaseous, liquid, and solid states. Generally, particulate matter emissions (PME), consisting of liquid and solid components, are abbreviated as PME, and volatile organic compound emissions (VOCs) are abbreviated as VOCs. Cooking fumes are composed of both of these types of substances.

[0111] In one embodiment, the filter element 22 includes a HEPA filter 221 (high-efficiency air filter) and an activated carbon filter 222 (see Figure 3 The HEPA filter 221 is primarily used to filter particulate matter (liquid and solid) in cooking fumes. Its materials can include PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nanofibers, meltblown polyester nonwoven fabric, etc., featuring high dust holding capacity and high filtration accuracy, achieving a filtration efficiency of over 90% for cooking fume particles. It can also be processed into the required size and shape according to the machine model. The activated carbon filter 222 is mainly used to filter volatile organic compounds (odors) in cooking fumes. Its materials can include activated carbon fiber, activated carbon granules, etc., and the activated carbon material used can be coconut shell, fruit shell, or coal-based carbon, etc., as these materials have a large specific surface area. Alternatively, molecular sieve materials can be used, as these materials have good adsorption effects. Optionally, in the airflow direction, the HEPA filter 221 is located upstream of the activated carbon filter 222. This prevents particulate matter in the cooking fumes from adhering to the activated carbon filter 222, thereby extending the service life of the activated carbon filter 222.

[0112] Optionally, in the airflow direction, the filter element 22 is located upstream of the purification fan 23; in this way, the airflow passing through the purification fan 23 is purified airflow, avoiding the accumulation of oil fumes on the purification fan 23 and extending the service life of the purification fan 23.

[0113] Reference Figures 1 to 4 , Figure 7 and Figure 8 In one embodiment, the decorative cover 11 is provided with a filter element installation port 113, through which the filter element 22 is detachably installed in the purification air duct; thus, it is convenient to remove the filter element 22 for cleaning or replacement. It is understood that the filter element 22 typically has a certain lifespan. For example, the HEPA filter 221 used in this technical solution is typically designed for a lifespan of more than one month. It needs to be replaced after its lifespan is reached to ensure the good purification capacity of the air purification device 2. Furthermore, periodically or irregularly removing it for cleaning or washing helps to extend its lifespan.

[0114] Optionally, a filter element cover 24 is provided on the filter element installation port 113; thus, after the filter element 22 is installed into the purification air duct through the filter element installation port 113, the filter element cover 24 is closed to cover the filter element installation port 113, which can prevent the filter element 22 from shaking out, improve the structural stability of the product, and at the same time prevent foreign objects from entering the purification air duct from the filter element installation port 113.

[0115] Optionally, the air purification device 2 further includes a purification housing 21 disposed within the decorative cover 11. The purification air duct is at least partially defined by the purification housing 21. The purification housing 21 has an air inlet 211 communicating with the air inlet 111 and an air outlet 212 communicating with the air outlet 112. It can be understood that setting an independent purification housing 21 can more accurately limit the purification air duct, thereby accurately guiding the direction of the purified airflow and improving purification efficiency. In addition, the purification housing 21 can more conveniently provide a mounting bracket for the filter element 22 and the purification fan 23. However, this design is not limited to this. In other embodiments, a partition-like component can be simply provided inside the decorative cover 11 to isolate the purification air duct. Without loss of generality, the purification housing 21 has an installation port 213 corresponding to the filter element mounting port 113. The filter element 22 is detachably connected to the purification housing 21 through the filter element mounting port 113 and the installation port 213.

[0116] It should be noted that in this embodiment, the filter cover 24 located on the filter mounting port 113 is connected to the purification housing 21. However, this design is not limited to this; in other embodiments, the filter cover 24 may also be connected to the decorative cover 11. Additionally, in this embodiment, optionally, one side of the filter cover 24 is rotatably connected to the purification housing 21, and the other side is detachably connected to the purification housing 21; thus, after opening the filter cover 24, it remains connected to the purification housing 21, preventing the filter cover 24 from being lost. Further optionally, the other side of the filter cover 24 may be connected to the purification housing 21 via, but is not limited to, a press-type snap-on switch assembly, thus facilitating the opening and closing of the filter cover 24 by pressing, making operation very convenient.

[0117] Optionally, the filter element 22 is removably mounted on the purification housing 21; it is understood that the removable mounting method makes it easier to remove, clean, or replace the filter element 22. Optionally, the purification housing 21 is provided with a guide rail 216 extending toward the mounting opening 213, and the filter element 22 is installed into the purification housing 21 along the guide rail 216; the guide rail 216 has a good guiding installation function, which facilitates the removable mounting and dismounting of the filter element 22.

[0118] Reference Figures 2 to 6In one embodiment, the main body 1 of the range hood further includes a fan cover 13 disposed within a decorative cover 11. The oil fume duct is at least partially defined by the fan cover 13, and the purification housing 21 is disposed on the front side of the fan cover 13. In this embodiment, the purification housing 21 is located on the front side of the fan cover 13, which allows the purification housing 21 to be positioned closer to the air outlet 112 on the decorative cover 11, thereby shortening the distance between the purification housing 21 and the air outlet 112. This facilitates the connection between the air outlet 212 on the purification housing 21 and the air outlet 112, and also results in a higher wind speed and a longer air delivery distance for the purified air blown from the air outlet 112. Optionally, the purification housing 21 can be detachably connected to the front of the fan cover 13. That is, the purification housing 21 is installed by attaching to the fan cover 13. Compared with the technical solution of installing the purification housing 21 by attaching to the decorative cover 11, this technical solution can reduce the probability of deformation of the decorative cover 11. At the same time, the detachable installation of the purification housing 21 can facilitate the replacement of its internal components.

[0119] Optionally, the purification fan 23 is a centrifugal fan. On the one hand, the centrifugal fan has a large air volume and low noise, so it can achieve air delivery over a long distance with low noise. On the other hand, the centrifugal fan has the function of changing the air direction (axial air intake, radial air exhaust), which is conducive to achieving air intake on both sides and air exhaust on the front.

[0120] Furthermore, the purification housing 21 is provided with a centrifugal volute 214 for mounting a centrifugal fan. The centrifugal volute 214 has a downward-facing and forward-bent-extending guide section 215 that extends to connect with the air outlet 112. It is understood that the air outlet 212 is located at the end of the guide section 215 furthest from the centrifugal volute 214. In this embodiment, the bent-extending guide section 215 enables forward airflow even when the centrifugal fan's axial direction is perpendicular or nearly perpendicular to the fan shroud 13. In this case, the required installation space in the front-to-back direction for the centrifugal fan is smaller. It is understood that if the centrifugal fan's radial direction is perpendicular or nearly perpendicular to the fan shroud 13, the required installation space in the front-to-back direction is larger, because typically, the diameter of the centrifugal fan is greater than or equal to its axial thickness. Optionally, the centrifugal volute 214 includes a spliced ​​volute body and a volute cover to facilitate the installation of the centrifugal fan into the centrifugal volute 214.

[0121] This invention also proposes a control method for a range hood. (Refer to...) Figure 10 , Figure 10 This is a flowchart illustrating the first embodiment of the control method for the range hood of the present invention.

[0122] The control method for the range hood in this embodiment uses the range hoods described in the above embodiments. The control method for this range hood includes the following steps:

[0123] Step S110: Obtain the burner working information of the stove corresponding to the range hood in real time;

[0124] Step S120: Control the start / stop status of the main body of the flue and the air purification device based on the burner working information.

[0125] In this embodiment, the burner operating information of the cooktop corresponding to the range hood is acquired in real time. Then, the start / stop status of the range hood body and the air purification device is controlled according to the burner operating information. For example, after the range hood power cord is connected to the mains power, if the user forgets to turn on the range hood body and the air purification device while cooking, and both the range hood body and the air purification device are in a stopped state, the burner operating information is used to determine the need to turn on the range hood body and / or the air purification device. When there is a need to turn them on, the range hood body and / or the air purification device are controlled to turn on automatically, thereby preventing the user from forgetting to turn on the range hood body and / or the air purification device, which would cause cooking fumes to spread in the kitchen space, resulting in oil fume pollution and harm to human health.

[0126] In one embodiment, the stove includes at least two burners, and step S120 includes: if it is determined that one burner is in a cooking state based on the burner working information, then the main body of the range hood is started and the air purification device is stopped.

[0127] The cooktop may include a left burner and a right burner. The burner operation information includes whether the left or right burner is in cooking mode, meaning that only one burner is currently in cooking mode. At this time, the main body of the range hood is controlled to start operation, and the air purification device is controlled to stop operation. Since only one burner is in cooking mode, the amount of oil fumes produced is relatively small, and the main body of the range hood can effectively purify the oil fumes. Therefore, by stopping the air purification device, the range hood is intelligently controlled, reducing the energy consumption of the range hood.

[0128] Optionally, after step S120, the method further includes: controlling the air purification device to start operation when the duration of operation of the main body of the range hood reaches a first preset duration.

[0129] In this embodiment, after the main body of the range hood starts operating, the duration of its operation is obtained. If this duration reaches a first preset duration, the air purification device 2 is controlled to start operating. This allows the air purification device to be activated after cooking on the stove for a period of time, enabling internal circulation purification of the kitchen environment. This allows the air purification device and the main body of the range hood to work together to purify kitchen fumes, improving the fume extraction efficiency of the range hood. The first preset duration can be set appropriately; for example, it can be 5 minutes.

[0130] In another embodiment, the stove includes at least two burners, and step S120 includes:

[0131] If it is determined based on the burner operating information that both burners are in cooking mode, the controller controls the main body of the range hood and the air purification device to start operation.

[0132] In this embodiment, the burner working information includes that both the left and right burners are in the cooking state, that is, both burners are in the cooking state. At this time, the range hood body and the air purification device are started and operated. Since both burners are in the cooking state, they produce a lot of oil fumes. By purifying the kitchen oil fumes together with the range hood body and the air purification device, the purification efficiency of oil fumes in the kitchen can be improved, thereby improving the oil fume absorption effect of the range hood body.

[0133] In another embodiment, the stove includes at least two burners, and step S120 includes:

[0134] If, based on the burner operating information, it is determined that the number of burners in cooking mode is reduced to one, then when the duration after the current moment reaches the second preset duration, the controller controls the air purification device to stop operating.

[0135] In this embodiment, if the number of burners in cooking mode is reduced to one based on the burner operation information (i.e., one of the two burners in cooking mode in the stove is turned off), then when the duration after the current moment reaches the second preset duration, the air purification device is controlled to stop operating. By delaying the shutdown of the air purification device, the purification efficiency of oil fumes in the kitchen is improved, thereby reducing the energy consumption of the range hood while improving the oil fume extraction effect of the range hood itself. The second preset duration can be reasonably set; for example, it can be 5 minutes.

[0136] Further, step S120 includes:

[0137] If the stove is determined to stop cooking based on the burner operating information, the controller will control the range hood and the air purification device to stop operating when the duration after the current moment reaches a third preset duration.

[0138] In this embodiment, if it is determined based on the burner operating information that the stove has stopped cooking, that is, if it is determined based on the burner operating information that all burners of the stove have stopped cooking, then when the duration after the current moment reaches a third preset duration, the range hood and the air purification device are controlled to stop operating. This achieves delayed control of the range hood and air purification device stopping operation, ensuring that the cooking fumes in the kitchen are completely purified. The third preset duration can be reasonably set, for example, 5 minutes, 10 minutes, etc.

[0139] The control method for a range hood proposed in this embodiment acquires the burner operating information of the stove corresponding to the range hood in real time; then, based on the burner operating information, it controls the start / stop status of the range hood body and the air purification device. By controlling the range hood body and / or the air purification device to automatically turn on according to the burner operating information, it avoids the user forgetting to turn on the range hood body and / or the air purification device, which would cause cooking fumes to spread in the kitchen space, resulting in oil fume pollution and harm to human health.

[0140] The present invention also proposes a computer-readable storage medium storing a control program for a range hood, wherein the control program, when executed by a processor, implements the steps of the aforementioned control method for the range hood. Since this computer-readable storage medium employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon further here.

[0141] It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, the person should consider that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0142] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A range hood, characterized in that, include: Range hood body; as well as An air purification device is provided with a purification duct, and a filter and a purification fan installed in the purification duct; The outer surface of the main body of the range hood is provided with an air inlet connected to the purification air duct and an air outlet connected to the purification air duct. The controller is electrically connected to both the main body of the range hood and the air purification device. The controller is used to control the start / stop status of the range hood body and the air purification device according to the burner working information of the stove corresponding to the range hood; The cooktop includes at least two burners. If it is determined that one burner is in a cooking state based on the burner's operating information, the controller controls the main body of the range hood to start running and controls the air purification device to stop running. When the duration of the main body of the range hood running reaches a first preset duration, the controller controls the air purification device to start running. If, based on the burner operating information, it is determined that the number of burners in cooking mode is reduced to one, then when the duration after the current moment reaches the second preset duration, the controller controls the air purification device to stop operating.

2. The range hood as described in claim 1, characterized in that, The cooktop includes at least two burners. If it is determined based on the burner operating information that both burners are in a cooking state, the controller controls the main body of the range hood and the air purification device to start operation.

3. The range hood as described in claim 1, characterized in that, If the stove is determined to stop cooking based on the burner operating information, the controller will control the range hood and the air purification device to stop operating when the duration after the current moment reaches a third preset duration.

4. The range hood as described in any one of claims 1 to 3, characterized in that, The main body of the range hood includes a decorative cover and a smoke collection cover located below the decorative cover, and the decorative cover is provided with an oil fume duct.

5. The range hood as described in claim 4, characterized in that, The air inlet is located on the side of the decorative cover; or, The air inlet is located at the upper part of the front of the decorative cover; or, The air inlet is located at the top of the main body of the smoke hood.

6. The range hood as described in claim 4, characterized in that, The air outlet is located on the front of the decorative cover; or, The air outlet is located on the side of the decorative cover; or, The air outlet is located at the top of the main body of the range hood; or, The air outlet is located at the bottom of the main body of the range hood.

7. A control method for a range hood, characterized in that, The control method for the range hood according to any one of claims 1 to 6 includes the following steps: Real-time acquisition of burner operating information of the stove corresponding to the range hood; The start / stop status of the main body of the flue and the air purification device is controlled based on the working information of the burner head.

8. The control method for a range hood as described in claim 7, characterized in that, The cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes: If, based on the burner operating information, it is determined that a burner is in a cooking state, then the main body of the range hood is controlled to start operation and the air purification device is controlled to stop operation.

9. The control method for a range hood as described in claim 8, characterized in that, After the steps of controlling the main body of the range hood to start operation and controlling the air purification device to stop operation, the method further includes: When the duration of operation of the main body of the range hood reaches a first preset duration, the air purification device is controlled to start operation.

10. The control method for a range hood as described in claim 7, characterized in that, The cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes: If it is determined based on the burner operating information that both burners are in cooking mode, the controller controls the main body of the range hood and the air purification device to start operation.

11. The control method for a range hood as described in claim 7, characterized in that, The cooktop includes at least two burners, and the step of controlling the start / stop status of the range hood body and the air purification device based on the burner operating information includes: If, based on the burner operating information, it is determined that the number of burners in cooking mode is reduced to one, then when the duration after the current moment reaches the second preset duration, the controller controls the air purification device to stop operating.

12. The control method for a range hood as described in any one of claims 7 to 11, characterized in that, The steps of controlling the start / stop status of the flue gas hood and the air purification device based on the burner head working information include: If the stove is determined to stop cooking based on the burner operating information, the controller will control the range hood and the air purification device to stop operating when the duration after the current moment reaches a third preset duration.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for a range hood, which, when executed by a processor, implements the steps of the control method for a range hood as described in any one of claims 7 to 12.

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