Range hood control method, device and equipment and oil smoke suction equipment

Abstract

The invention relates to a range hood control method, device and equipment and lampblack suction equipment, a range hood comprises a range hood module and a fan module, the range hood module is used for absorbing lampblack in a target area representing an action area of the range hood and discharging the lampblack to play a role in purifying air, and the fan module is used for supplying air to the target area. The range hood control method comprises the steps that the oil smoke concentration of a target area is obtained, the target air supply state is determined based on the oil smoke concentration and a preset oil smoke concentration threshold value, and a fan module is controlled to work so that the fan module can be in the target air supply state. Therefore, the working state of the fan module is controlled according to the detected oil smoke concentration so as to control the air supply airflow, the air supply airflow and the oil smoke airflow can be better balanced, the air supplied by the fan module can be cooled, the influence on the oil smoke absorption effect of the range hood is reduced, and the working reliability of the range hood is improved.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a range hood control method, device, equipment and range hood extraction equipment. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It is installed above the kitchen stove and can quickly extract the waste from stove combustion and the fumes harmful to the human body generated during the cooking process and discharge them outdoors. At the same time, it condenses and collects the fumes to reduce pollution, purify the air, and has anti-toxic and explosion-proof safety protection functions. It is widely used in people's daily lives.

[0003] Since the temperature in the kitchen is high during cooking, an air supply module can be set in the range hood to supply air to achieve a cooling effect. However, if the air supplied by the air supply module is too small, the cooling effect is poor; and if the air supplied by the air supply module is too large, it will affect the air flow of the range hood and the oil fume absorption effect. Therefore, the working reliability of traditional range hoods is low. Summary of the invention

[0004] Based on this, it is necessary to provide a range hood control method, device, equipment and range hood extraction equipment that can improve the working reliability of the range hood in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a range hood control method, the range hood comprising a range hood module and a fan module, the range hood module being used to absorb and discharge oil smoke from a target area, the fan module being used to supply air to the target area, the target area being an action area of ​​the range hood;

[0006] The method comprises:

[0007] Acquire the oil smoke concentration of the target area;

[0008] Determining a target air supply state based on the oil fume concentration and a preset oil fume concentration threshold;

[0009] The fan module is controlled to operate so that the fan module is in the target air supply state.

[0010] In one embodiment, determining the target air supply state based on the oil fume concentration and a preset oil fume concentration threshold comprises:

[0011] When the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low-speed state; and the air supply volume of the fan module in the low-speed state is less than the standard air supply volume.

[0012] In one of the embodiments, when the oil fume concentration is greater than the preset oil fume concentration threshold, determining the target air supply state to be a low speed state includes:

[0013] When the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low speed gear; and the air supply volume of the fan module at the low speed gear is less than the standard air supply volume.

[0014] In one embodiment, determining the target air supply state based on the oil fume concentration and a preset oil fume concentration threshold comprises:

[0015] When the oil smoke concentration is less than the preset oil smoke concentration threshold, determining an initial air supply state; the initial air supply state includes a low speed state and a high speed state; the air supply volume of the fan module in the high speed state is greater than the standard air supply volume;

[0016] According to the fed-back user instruction, a target air supply state is determined; the user instruction is generated based on the initial air supply state.

[0017] In one of the embodiments, when the oil fume concentration is less than the preset oil fume concentration threshold, determining the initial air supply state includes:

[0018] When the oil fume concentration is less than the preset oil fume concentration threshold, the initial air supply state is determined to be a low speed gear or a high speed gear; the air supply volume of the fan module at the high speed gear is greater than the air supply volume at the low speed gear.

[0019] In one embodiment, the high-speed gear includes a first high-speed gear and a second high-speed gear, and the air supply volume of the fan module at the first high-speed gear is less than the air supply volume at the second high-speed gear; when the oil fume concentration is less than the preset oil fume concentration threshold, determining that the initial air supply state is a low-speed gear or a high-speed gear includes:

[0020] When the oil smoke concentration is greater than or equal to the preset lower limit of concentration and less than the preset oil smoke concentration threshold, determining that the initial air supply state is a low speed gear or a first high speed gear;

[0021] When the oil smoke concentration is less than the preset concentration lower limit, the initial air supply state is determined to be a low speed gear, a first high speed gear or a second high speed gear.

[0022] In a second aspect, the present application further provides a range hood control device, the range hood comprising a range hood module and a fan module, the range hood module being used to absorb and discharge oil smoke from a target area, the fan module being used to supply air to the target area, the target area being an action area of ​​the range hood; the device comprising:

[0023] A concentration acquisition module, used to acquire the oil smoke concentration of the target area;

[0024] An air supply state determination module, used to determine a target air supply state based on the oil fume concentration and a preset oil fume concentration threshold;

[0025] The air supply state control module is used to control the operation of the fan module so that the fan module is in the target air supply state.

[0026] In the third aspect, the present application also provides a range hood control device, including a smoke detection device and a controller. The smoke detection device is arranged on the range hood to detect the oil smoke concentration in a target area and send it to the controller. The target area is the effective area of ​​the range hood; the controller is used to control the range hood according to the above method.

[0027] In a fourth aspect, the present application also provides a range hood extraction device, comprising a range hood and a range hood control device as described above, wherein the range hood comprises a hood module and a fan module, wherein the hood module is used to absorb and discharge the fumes in a target area, and wherein the fan module is used to supply air to the target area, and the target area is the effective area of ​​the range hood.

[0028] In one embodiment, the fan module includes an air inlet, an air outlet and a wind wheel, the wind wheel is arranged between the air inlet and the air outlet, and is also connected to the controller, and the air inlet and the air outlet are connected to the target area.

[0029] In one of the embodiments, the fan module further includes a panel assembly, which is connected to the controller and is slidably disposed at the air outlet.

[0030] In one of the embodiments, the range hood further includes a cover assembly, and the fan module is disposed in the cover assembly.

[0031] In one embodiment, the range hood module includes an oil smoke inlet, a volute assembly and an oil smoke outlet which are arranged in sequence.

[0032] The above-mentioned range hood control method, device, equipment and range hood equipment, the range hood includes a hood module and a fan module, the hood module is used to absorb and discharge the oil smoke in the target area representing the range of action of the range hood, so as to purify the air, and the fan module is used to supply air to the target area, so as to reduce the temperature, and the range hood control method includes: obtaining the oil smoke concentration in the target area, determining the target air supply state based on the oil smoke concentration and the preset oil smoke concentration threshold, and controlling the fan module to operate so that the fan module is in the target air supply state. Thus, by controlling the operating state of the fan module according to the size of the detected oil smoke concentration to control the size of the air supply airflow, the air supply airflow and the oil smoke airflow can be better balanced, so that the air supplied by the fan module can both reduce the temperature and reduce the impact on the oil smoke absorption effect of the range hood, thereby improving the working reliability of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] FIG1 is a schematic structural diagram of a range hood in one embodiment;

[0035] FIG2 is a schematic structural diagram of a range hood in another embodiment;

[0036] FIG3 is a schematic structural diagram of a fan module in an open state according to an embodiment;

[0037] FIG4 is a side view of a fan module in another embodiment;

[0038] FIG5 is a schematic diagram of the structure of a fan module in a closed state according to an embodiment;

[0039] FIG6 is a schematic structural diagram of a range hood in one embodiment;

[0040] FIG7 is a schematic flow chart of a range hood control method according to an embodiment;

[0041] FIG8 is a schematic flow chart of a range hood control method in another embodiment;

[0042] FIG9 is a schematic flow chart of a range hood control method in yet another embodiment;

[0043] FIG10 is a flow chart of a step of determining a target air supply state based on oil fume concentration and a preset oil fume concentration threshold in one embodiment;

[0044] FIG11 is a flow chart of a step of determining an initial air supply state when the oil smoke concentration is less than a preset oil smoke concentration threshold in one embodiment;

[0045] FIG12 is a flow chart of a step of determining whether the initial air supply state is a low speed gear or a high speed gear when the oil smoke concentration is less than a preset oil smoke concentration threshold in one embodiment;

[0046] FIG13 is a schematic diagram of the working process of a cooking fume extraction device in one embodiment;

[0047] FIG. 14 is a schematic diagram of a structural block diagram of a range hood control device in one embodiment. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] The range hood control method provided in the embodiment of the present application is used to control the range hood. As shown in FIG. 1 and FIG. 2, the range hood includes a range hood module 100 and a fan module 200, and the range hood module 100 is used to absorb the oil fume in the target area and discharge it. The target area is the action area of ​​the range hood. For example, when the range hood is used in the kitchen, the action area of ​​the oil fume is the kitchen, and the oil fume in the kitchen can be absorbed, so the target area is the kitchen. The structure of the range hood module 100 is not unique. For example, in one embodiment, the range hood module 100 includes an oil fume inlet, a volute assembly, and an oil fume outlet arranged in sequence. When the device in the volute assembly is working, a negative pressure can be formed, so that the oil fume in the target area can be sucked into the volute assembly through the oil fume inlet, and then discharged through the oil fume outlet, for example, it can be discharged to a public flue or outdoors, thereby reducing the effect of the oil fume in the target area. It can be understood that in other embodiments, the range hood module 100 can also include other devices, such as filter devices, etc., which are not limited here.

[0050] The fan module 200 is used to supply air to the target area, so that air circulation is performed in the target area to reduce the temperature. For example, the fan module 200 can supply air to the cook in the kitchen to accelerate the air flow rate and reduce the temperature of the blowing part of the cook. The structure of the fan module 200 is not unique. For example, in one embodiment, as shown in Figures 3, 4 and 5, the fan module 200 includes an air inlet 202, an air outlet 204 and a wind wheel 206, and the wind wheel 206 is arranged between the air inlet 202 and the air outlet 204, and the air inlet 202 and the air outlet 204 are connected to the target area. The fan module 200 absorbs the wind in the target area through the air inlet 202 and supplies air to the target area through the air outlet 204. When the wind wheel 206 rotates, the air in the target area can pass through the air inlet 202, the wind wheel 206 and the air outlet 204 in sequence, complete the air circulation, accelerate the flow rate of the air in the target area, and play a role in cooling. FIG. 5 shows a state in which the air inlet and the air outlet of the fan module 200 are both closed.

[0051] Further, in one embodiment, as shown in FIG3 , the fan module 200 further includes a panel assembly 208, and the panel assembly 208 is slidably disposed at the air outlet 204. The panel assembly 208 is slidably disposed at the air outlet 204, which means that the panel assembly 208 can slide so as to change the relative position with the air outlet 204. The sliding setting can be realized by a slide rail or other structure, which is not limited here. The panel assembly 208 is slidably disposed at the air outlet 204, so that when the panel assembly 208 slides, the area covering the air outlet 204 changes, and the air volume of the air outlet 204 can be adjusted. Exemplarily, when the panel assembly 208 rises, the air outlet 204 is connected to the target area and can supply air. The higher the height of the panel assembly 208 rises, the larger the connection area between the air outlet 204 and the target area, and the larger the air supply area of ​​the air outlet 204, until the air outlet 204 is completely connected to the target area. When the panel assembly 208 descends, the more the panel assembly 208 descends, the smaller the connection area between the air outlet 204 and the target area, and the smaller the air supply area of ​​the air outlet 204, until the air outlet 204 is completely isolated from the target area. In an extensible manner, user interaction devices such as buttons, touch controls, display screens, and prompt lights can also be set on the panel assembly 208 to better receive user commands and issue corresponding prompt information, so that the user can understand the working status of the range hood in a timely manner, thereby improving the convenience of use.

[0052] In an embodiment, as shown in FIG. 2 , the range hood further includes a cover assembly 300, and the fan module 200 is disposed in the cover assembly 300. The height of the cover assembly 300 may be greater than or equal to the height of the fan module 200, and the fan module 200 may be disposed in the cover assembly 300, and the cover assembly may protect the fan module 200. Alternatively, the fan module 200 and the cover assembly 300 may be disposed flush with each other to improve the integrity and coordination of the range hood.

[0053] In general, when the range hood is working, the range hood module 100 can absorb the oil smoke from the target area through the oil smoke inlet and discharge it, and at the same time, the fan module 200 can send air to the target area through the air outlet 204, thereby reducing the temperature of the target area and the temperature of the object. The schematic diagram of the working state of the range hood can be seen in Figure 6.

[0054] In one embodiment, a range hood control method is provided, and the range hood control method can be executed by a controller, wherein the controller can use a control chip that is already in the range hood, and add corresponding functions to the original control chip to realize the range hood control method of the present application, which can save hardware costs. Alternatively, a controller independent of the original range hood can also be used, and the steps of the range hood control method of the present application can be executed by the controller, which will not affect the original functions of the range hood, and can also work in a division of labor with the control chip of the range hood itself, so that the work does not affect each other, thereby improving the accuracy of the work. Alternatively, the range hood control method can also be executed by a terminal or server that is connected to the range hood in communication. Among them, the terminal can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices, portable wearable devices, etc. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0055] In an exemplary embodiment, as shown in FIG. 7 , a range hood control method is provided, which is described by taking the method executed by a controller as an example, and includes the following steps 402 to 406 . Among them:

[0056] Step 402, obtaining the oil smoke concentration in the target area.

[0057] The target area is the area where the range hood works, which can also be understood as the area where the range hood is located. For example, when the range hood is used in the kitchen, the area where the range hood works is the kitchen, and the range hood can absorb the fumes in the kitchen, so the target area is the kitchen. The greater the fume concentration in the target area, the more fumes the range hood needs to absorb; the smaller the fume concentration in the target area, the less fumes the range hood needs to absorb.

[0058] There is not only one way to obtain the oil fume concentration in the target area. For example, the oil fume concentration in the target area can be detected by a smoke detection device and sent to the controller so that the controller can obtain the oil fume concentration in the target area. The smoke detection device is set on the range hood, for example, it can be set on the range hood module to detect the oil fume concentration in the target area that has a greater impact on the oil fume absorption effect of the range hood. Furthermore, the smoke detection device can be set at the oil fume inlet of the range hood module to improve the accuracy of the detected oil fume concentration.

[0059] In an expandable manner, the number of smoke detection devices can be one or more. When there is only one smoke detection device, the hardware structure is simple and the use cost is low. When there are multiple smoke detection devices, each smoke detection device can be set at a different position to detect the oil fume concentration at different positions. Each smoke detection device sends the detection result to the controller, and the controller determines the oil fume concentration based on the received detection result. For example, the average value of each detection result is used as the oil fume concentration of the target area, which can reduce the detection error caused by a single smoke detection device, thereby helping to improve the accuracy of the oil fume concentration. In addition, the type of smoke detection device is not limited, for example, it can be a smoke sensor, etc.

[0060] Step 404, determining a target air supply state based on the oil fume concentration and a preset oil fume concentration threshold.

[0061] The preset oil fume concentration threshold can be used as a reference to measure the oil fume concentration. The preset oil fume concentration threshold can be determined according to parameters such as the structure and type of the range hood, and different range hoods may have different preset oil fume concentration thresholds. The preset oil fume concentration threshold can be a fixed value set at the factory, or a value determined according to other circumstances.

[0062] The target air supply state may represent the working state of the fan module, that is, the target air supply state may be the target air supply state of the fan module.

[0063] After obtaining the oil fume concentration of the target area, the oil fume concentration is compared with the preset oil fume concentration threshold, and the comparison result can reflect the current oil fume state of the target area. On this basis, the target air supply state is determined according to the comparison result, so as to match a suitable air supply state for the fan module according to the comparison result, which is conducive to improving the working performance of the fan module.

[0064] Step 406, controlling the fan module to operate so that the fan module is in a target air supply state.

[0065] After determining the target air supply state, the fan module is controlled to operate according to the target air supply state so that the fan module is in the target air supply state. For example, if the target air supply state is a high speed state, the fan module is controlled to operate at a higher power to increase the air supply volume; if the target air supply state is a low speed state, the fan module is controlled to operate at a lower power to reduce the air supply volume.

[0066] In the above-mentioned range hood control method, the range hood includes a hood module and a fan module. The hood module is used to absorb and discharge the oil smoke in the target area representing the action area of ​​the range hood, thereby purifying the air. The fan module is used to supply air to the target area, thereby reducing the temperature. The range hood control method includes: obtaining the oil smoke concentration in the target area, determining the target air supply state based on the oil smoke concentration and the preset oil smoke concentration threshold, and controlling the fan module to operate so that the fan module is in the target air supply state. Thus, by controlling the operating state of the fan module according to the size of the detected oil smoke concentration to control the size of the air supply airflow, the air supply airflow and the oil smoke airflow can be better balanced, so that the air supplied by the fan module can both reduce the temperature and reduce the impact on the oil smoke absorption effect of the range hood, thereby improving the working reliability of the range hood.

[0067] The method of determining the target air supply state is not unique. For example, in one embodiment, as shown in FIG. 8 , step 404 includes step 504 : when the oil fume concentration is greater than a preset oil fume concentration threshold, determining that the target air supply state is a low-speed state.

[0068] The air volume of the fan module in the low speed state is less than the standard air volume. The standard air volume refers to the air volume of the fan module in the standard working mode. For example, when the fan module includes three gears, the standard air volume is the air volume of the fan module in the middle gear. The standard air volume is used to indicate that the air volume of the fan module is neither too large nor too small.

[0069] When the oil fume concentration is greater than the preset oil fume concentration threshold, it means that the oil fume concentration in the current target area is relatively high, and the range hood needs to absorb the oil fume more strongly. In this case, the target air supply state is determined to be a low-speed state, so that the fan module is in a low-speed state, and the air volume delivered is small, which is less than the standard air supply volume. In this way, it can be avoided that the excessive wind blown by the fan module affects the flow of oil fume, thereby further affecting the oil fume absorption effect.

[0070] In this embodiment, when the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low-speed state to reduce the impact of the wind delivered by the fan module on the oil fume flow, which is beneficial to improving the oil fume absorption effect of the range hood.

[0071] The method of controlling the operation of the fan module is not unique, and correspondingly, the type of the target air supply state is not unique. For example, the target air supply state may be outputting a target air volume, in which case the fan module may output the target air volume by adjusting the operating state of the fan module. Alternatively, the target air supply state may also include being in a target gear position, in which case the fan module may be in the target gear position by adjusting the operating state of the fan module.

[0072] Further, in one embodiment, as shown in FIG. 9 , step 504 includes step 604 : when the oil fume concentration is greater than a preset oil fume concentration threshold, determining that the target air supply state is a low speed gear.

[0073] The air volume of the fan module at the low speed gear is less than the standard air volume. The standard air volume refers to the air volume of the fan module in the standard working mode. For example, when the fan module includes three gears, the standard air volume is the air volume of the fan module at the middle gear. The standard air volume is used to indicate that the air volume of the fan module is neither too large nor too small.

[0074] When the oil fume concentration is greater than the preset oil fume concentration threshold, it means that the oil fume concentration in the current target area is relatively high, and the range hood needs to absorb the oil fume more strongly. In this case, the target air supply state is determined to be a low speed gear, so that the fan module is operated at a low speed gear, and the air volume delivered is small, which is less than the standard air volume. In this way, it can be avoided that the excessive wind blown by the fan module affects the flow of oil fume, thereby further affecting the oil fume absorption effect.

[0075] In this embodiment, when the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low speed gear to reduce the influence of the air sent by the fan module on the flow of oil fume, which is conducive to improving the oil fume absorption effect of the range hood. The air supply volume of the fan module is adjusted by gear adjustment, and the control process is simple and convenient.

[0076] In another exemplary embodiment, as shown in FIG10 , step 404 includes step 704 and step 706. In which:

[0077] Step 704: when the oil fume concentration is less than a preset oil fume concentration threshold, determine the initial air supply state.

[0078] The initial air supply state includes a low-speed state and a high-speed state, and the air supply volume of the fan module in the high-speed state is greater than the standard air supply volume. The standard air supply volume refers to the air supply volume of the fan module in the standard working mode. For example, when the fan module includes three gears, the standard air supply volume is the air supply volume of the fan module in the middle gear. The standard air supply volume is used to characterize that the air supply volume of the fan module is neither too large nor too small. The air supply volume of the fan module in the low-speed state is small, and the air supply volume in the high-speed state is large.

[0079] When the oil fume concentration is less than the preset oil fume concentration threshold, it means that the oil fume concentration in the current target area is not very high. In this case, the initial air supply state can be determined to be either a low speed state or a high speed state, and the target air supply state of the fan module can be further determined in combination with other bases.

[0080] Step 706, determining the target air supply state according to the feedback user instruction.

[0081] The user instruction is generated based on the initial air supply state. It can be understood that the user instruction is an instruction issued by the user after the user understands the initial air supply state.

[0082] For example, after determining the initial air supply state, the controller may provide the initial air supply state for the user to select. Then, the controller waits to receive a user instruction. After receiving the user instruction, it indicates that the user has made a selection, and then determines the target air supply state according to the specific content of the user instruction.

[0083] In this embodiment, when the oil fume concentration is less than the preset oil fume concentration threshold, the initial air supply state is determined, and the target air supply state is determined according to the feedback user instruction. Thus, when the output air volume of the fan module has little effect on the oil fume absorption effect, the air supply state of the fan module can be determined according to the user's needs, so that the output air volume of the fan module can better meet the user's needs.

[0084] The method of controlling the operation of the fan module is not unique, and correspondingly, the type of the initial air supply state is not unique. Exemplarily, the initial air supply state may be outputting a target air volume, in which case, upon receiving a user instruction representing user confirmation, the fan module may output the target air volume by adjusting the operating state of the fan module. Alternatively, the initial air supply state may also include being in a target gear position, in which case, upon receiving a user instruction representing user confirmation, the fan module may be in a target gear position by adjusting the operating state of the fan module.

[0085] Further, in one embodiment, as shown in FIG. 11 , step 704 includes step 804 : when the oil fume concentration is less than a preset oil fume concentration threshold, determining that the initial air supply state is a low speed gear or a high speed gear.

[0086] The air supply volume of the fan module at a high speed gear is greater than that at a low speed gear.

[0087] When the oil fume concentration is less than the preset oil fume concentration threshold, it means that the oil fume concentration in the current target area is not very high. In this case, the initial air supply state can be determined as either a low speed gear with a small output air volume or a high speed gear with a large output air volume. The target air supply state of the fan module can be further determined in combination with other criteria.

[0088] In this embodiment, when the oil fume concentration is less than the preset oil fume concentration threshold, the initial air supply state is determined to be a low speed gear or a high speed gear. Thus, when the output air volume of the fan module has little effect on the oil fume absorption effect, multiple options can be provided to the user, so that the air supply state of the fan module can be determined according to the user's needs, so that the output air volume of the fan module can better meet the user's needs. The air supply volume of the fan module is adjusted by adjusting the gear, and the control process is simple and convenient.

[0089] Further, in one embodiment, the high speed gear includes a first high speed gear and a second high speed gear, and the air supply volume of the fan module at the first high speed gear is less than the air supply volume at the second high speed gear. As shown in FIG. 12 , step 804 includes step 904 and step 906 .

[0090] Step 904, when the oil fume concentration is greater than or equal to the preset lower concentration limit and less than the preset oil fume concentration threshold, determine that the initial air supply state is a low speed gear or a first high speed gear.

[0091] The preset lower limit of concentration is less than the preset oil fume concentration threshold. The preset lower limit of concentration can be used as a reference to measure the oil fume concentration. The preset lower limit of concentration can be determined based on parameters such as the structure and type of the range hood, and different range hoods may have different preset lower limits of concentration. The preset lower limit of concentration can be a fixed value set at the factory, or a value determined based on other circumstances.

[0092] When the oil fume concentration is greater than or equal to the preset lower limit of concentration and less than the preset oil fume concentration threshold, it means that the oil fume concentration in the current target area is neither too high nor too low. In this case, the initial air supply state is determined to be a low speed gear or the first high speed gear. The output air volume corresponding to the low speed gear is small, and the output air volume corresponding to the first high speed gear is larger than the low speed gear and smaller than the second high speed gear. Therefore, two options of low speed gear or first high speed gear can be provided to the user, which can better meet the needs of the user and have little impact on the oil fume absorption effect.

[0093] Step 906, when the oil smoke concentration is less than the preset lower limit of the concentration, determine that the initial air supply state is a low speed gear, a first high speed gear or a second high speed gear.

[0094] When the oil fume concentration is less than the preset lower limit, it means that the oil fume concentration in the current target area is relatively low. In this case, the initial air supply state is determined to be a low-speed gear, a first high-speed gear, or a second high-speed gear. The output air volume corresponding to the low-speed gear is relatively small, the output air volume corresponding to the first high-speed gear is larger than the low-speed gear and smaller than the second high-speed gear, and the output air volume corresponding to the second high-speed gear is relatively large. Thus, three options of a low-speed gear, a first high-speed gear, or a second high-speed gear can be provided to the user, which can better meet the needs of the user and have little effect on the oil fume absorption effect.

[0095] In this embodiment, when the oil fume concentration is greater than or equal to the preset lower limit of the concentration, and less than the preset oil fume concentration threshold, the initial air supply state is determined to be a low-speed gear or a first high-speed gear. When the oil fume concentration is less than the preset lower limit of the concentration, the initial air supply state is determined to be a low-speed gear, a first high-speed gear, or a second high-speed gear. Thus, by further refining the gears, according to the relationship between the oil fume concentration and the preset lower limit of the concentration and the preset oil fume concentration threshold, a variety of gear options can be provided to the user in a targeted manner under different circumstances, so that the user can adjust the output air volume of the fan module according to the needs, which is conducive to improving the working reliability of the range hood.

[0096] In order to better understand the above embodiment, a detailed explanation is given below in conjunction with a specific embodiment. In one embodiment, the range hood includes a range hood module, a fan module and a cover assembly. The range hood module is used to absorb oil smoke and discharge the oil smoke generated during cooking to the outside. The fan module is used to circulate airflow in the kitchen to reduce the ambient temperature around the user. The cover assembly is used for appearance modification. The height of the cover is flush with the height of the fan module so that the fan module does not appear obtrusive. The schematic diagram of the effect of the fan hood after assembly is shown in Figure 1.

[0097] The structure of the fan module is shown in Figure 3-5, which includes an air inlet, a housing assembly, a panel assembly, an air outlet, and a wind wheel. The fan module is in the open state as shown in Figure 3, with the panel assembly rising to form an air outlet. The fan module is in the closed state as shown in Figure 5, with the air outlet closed.

[0098] The working state of the range hood is shown in Figure 6. The oil smoke generated during cooking is sucked into the range hood through the oil smoke inlet, and then discharged to the public flue through the volute assembly (air duct system) and the oil smoke outlet. The fan module rotates the wind wheel, and under the action of the pressure difference, the kitchen air is sucked in through the air inlet and discharged through the air outlet, so that the air inside the kitchen can circulate. When the air flow of the range hood inlet (i.e. the oil smoke inlet) is too large, it will affect the air outlet effect of the fan module. Correspondingly, when the air volume of the fan module is too large, it will affect the oil smoke inlet air flow, thereby affecting the extraction effect.

[0099] Therefore, in order to solve the problem of the mutual influence between the air intake and the cold air flow, the present application proposes a range hood control method, which controls the size of the cold air flow by detecting the size of the oil fume flow, thereby balancing the cold air flow and the oil fume flow, so that the cold air flow blown out by the fan module reaches the optimal state, and improves the user experience. Its workflow is shown in Figure 13: The fan module defaults to three gears at the factory, namely T1, T2, and T3, where the corresponding output air volume of different gears is T1<T2<T3, and the smoke detection device is set at the oil fume inlet of the range hood. The preset oil fume concentration threshold is Q1, and the preset concentration lower limit is Q2, where Q1≥Q2. When the range hood starts working, the smoke detection device detects the real-time oil fume concentration and records it as q. When q>Q1, the range hood fan module runs at the T1 gear and can only run at the T1 gear. When Q2≤q<Q1, the range hood fan module can run at T1 and T2 gears to discharge air. Users can adjust the air volume and determine the gear of the fan module according to their needs. When q<Q2, the range hood fan module can run at T1, T2, and T3 gears. Users can adjust the air volume and determine the gear of the fan module according to their needs. The fan module has three gears, and the corresponding gear air volume is fixed. Depending on the oil fume concentration, the fan gears that users can choose are limited. For example, when the oil fume concentration is low, users can choose different gears among the three gears according to the air volume requirements, or choose different gears to execute alternately. When the oil fume concentration is high, users can only choose the fan module to run at the lowest gear, and the medium and high gears cannot be triggered. The higher the oil fume concentration, the fewer gears available for the fan module, and the lower the gears; the lower the oil fume concentration, the more gears available for the fan module, and the high gear can also be used.

[0100] In this embodiment, the size of the cold air flow is controlled by detecting the size of the oil fume concentration, thereby balancing the cold air flow and the oil fume flow, so that the cold air flow blown by the fan module reaches the optimal state, thereby improving the working reliability of the range hood.

[0101] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0102] Based on the same inventive concept, the embodiment of the present application also provides a range hood control device for implementing the range hood control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more range hood control device embodiments provided below can refer to the limitations of the range hood control method above, and will not be repeated here.

[0103] In an exemplary embodiment, as shown in FIG. 14 , a range hood control device is provided, comprising: a concentration acquisition module 1402 , an air supply state determination module 1404 and an air supply state control module 1406 , wherein:

[0104] The concentration acquisition module 1402 is used to acquire the oil smoke concentration of the target area;

[0105] The air supply state determination module 1404 is used to determine the target air supply state based on the oil fume concentration and a preset oil fume concentration threshold;

[0106] The air supply state control module 1406 is used to control the operation of the fan module so that the fan module is in the target air supply state.

[0107] In an exemplary embodiment, the air supply state determination module is also used to determine that the target air supply state is a low speed state when the oil fume concentration is greater than the preset oil fume concentration threshold; the air supply volume of the fan module in the low speed state is less than the standard air supply volume.

[0108] In an exemplary embodiment, the air supply state determination module is also used to determine that the target air supply state is a low speed gear when the oil fume concentration is greater than the preset oil fume concentration threshold; the air supply volume of the fan module at the low speed gear is less than the standard air supply volume.

[0109] In an exemplary embodiment, the air supply state determination module is also used to determine the initial air supply state when the oil fume concentration is less than the preset oil fume concentration threshold; the initial air supply state includes a low speed state and a high speed state; the air supply volume of the fan module in the high speed state is greater than the standard air supply volume; the target air supply state is determined according to the feedback user instructions; the user instructions are generated based on the initial air supply state.

[0110] In an exemplary embodiment, the air supply state determination module is also used to determine that the initial air supply state is a low speed gear or a high speed gear when the oil fume concentration is less than the preset oil fume concentration threshold; the air supply volume of the fan module at the high speed gear is greater than the air supply volume at the low speed gear.

[0111] In an exemplary embodiment, the high-speed gear includes a first high-speed gear and a second high-speed gear, and the air supply volume of the fan module at the first high-speed gear is less than the air supply volume at the second high-speed gear; the air supply state determination module is also used to determine that the initial air supply state is a low-speed gear or a first high-speed gear when the oil fume concentration is greater than or equal to a preset concentration lower limit value and less than the preset oil fume concentration threshold value; when the oil fume concentration is less than the preset concentration lower limit value, determine that the initial air supply state is a low-speed gear, a first high-speed gear or a second high-speed gear.

[0112] Each module in the range hood control device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0113] In one embodiment, a range hood control device is provided, including a smoke detection device and a controller. The smoke detection device is arranged on the range hood, and is used to detect the oil smoke concentration in a target area and send it to the controller. The target area is the effective area of ​​the range hood; the controller is used to control the range hood according to the method of any of the above embodiments.

[0114] The smoke detection device is arranged on the range hood, for example, it can be arranged on the range hood module to detect the oil smoke concentration in the target area, which has a greater impact on the oil smoke absorption effect of the range hood. Furthermore, the smoke detection device can be arranged at the oil smoke inlet of the range hood module to improve the accuracy of the detected oil smoke concentration.

[0115] In an expandable manner, the number of smoke detection devices can be one or more. When there is only one smoke detection device, the hardware structure is simple and the use cost is low. When there are multiple smoke detection devices, each smoke detection device can be set at a different position to detect the oil fume concentration at different positions. Each smoke detection device sends the detection result to the controller, and the controller determines the oil fume concentration based on the received detection result. For example, the average value of each detection result is used as the oil fume concentration of the target area, which can reduce the detection error caused by a single smoke detection device, thereby helping to improve the accuracy of the oil fume concentration. In addition, the type of smoke detection device is not limited, for example, it can be a smoke sensor, etc.

[0116] In one embodiment, a range hood extraction device is provided, including a range hood and a range hood control device as in the above embodiment, wherein the range hood includes a hood module and a fan module, wherein the hood module is used to absorb and discharge fumes in a target area, and the fan module is used to supply air to the target area, and the target area is the effective area of ​​the range hood.

[0117] The target area is the area where the range hood works. For example, when the range hood is used in a kitchen, the area where the range hood works is the kitchen, and the range hood can absorb the fumes in the kitchen. The target area is the kitchen. The fan module is used to supply air to the target area, so that airflow circulates in the target area to reduce the temperature. For example, the fan module can supply air to a cook in the kitchen to accelerate the airflow speed and reduce the temperature of the blown area of ​​the cook.

[0118] In one embodiment, the fan module includes an air inlet, an air outlet and a wind wheel. The wind wheel is arranged between the air inlet and the air outlet and is also connected to a controller. The air inlet and the air outlet are connected to the target area.

[0119] The air inlet and the air outlet are connected to the target area. The fan module absorbs the wind in the target area through the air inlet and supplies air to the target area through the air outlet. When the wind wheel rotates, the air in the target area can pass through the air inlet, the wind wheel and the air outlet in sequence to complete the air circulation, accelerate the flow speed of the air in the target area, and play a role in cooling. The wind wheel is connected to the controller, and the controller can control the working state of the wind wheel, such as controlling the speed of the wind wheel, so as to realize the control of the fan module.

[0120] In one embodiment, the fan module further includes a panel assembly, which is connected to the controller and is slidably arranged at the air outlet. The panel assembly is slidably arranged at the air outlet, which means that the panel assembly can slide so that the relative position with the air outlet changes. The sliding setting can be achieved by a slide rail or other structure, which is not limited here. The panel assembly is slidably arranged at the air outlet so that when the panel assembly slides, the area covering the air outlet changes, and the air volume of the air outlet can be adjusted. Exemplarily, when the panel assembly rises, the air outlet is connected to the target area and can supply air. The higher the height of the panel assembly rises, the larger the connection area between the air outlet and the target area, and the larger the air supply area of ​​the air outlet, until the air outlet is completely connected to the target area. When the panel assembly descends, the more the panel assembly descends, the smaller the connection area between the air outlet and the target area, and the smaller the air supply area of ​​the air outlet, until the air outlet is completely isolated from the target area. The panel assembly is also connected to the controller, and the controller can control the position and working status of the panel assembly. Expandably, user interaction devices such as buttons, touch controls, display screens and prompt lights can also be set on the panel assembly to better receive user instructions and issue corresponding prompt information, so that users can understand the working status of the range hood in time and improve the convenience of use.

[0121] In an exemplary embodiment, the range hood further comprises a cover assembly, and the fan module is disposed in the cover assembly. The height of the cover assembly may be greater than or equal to the height of the fan module, and the fan module may be disposed in the cover assembly, or the fan module and the cover assembly may be disposed flush with each other to improve the integrity and coordination of the range hood.

[0122] In an exemplary embodiment, the range hood module includes an oil smoke inlet, a volute assembly, and an oil smoke outlet, which are arranged in sequence. When the components in the volute assembly are working, negative pressure can be formed, so that the oil smoke in the target area can be sucked into the volute assembly through the oil smoke inlet, and then discharged through the oil smoke outlet, for example, to a public flue or outdoors, thereby reducing the effect of the oil smoke in the target area. It can be understood that in other embodiments, the range hood module can also include other components, such as filter components, etc., which are not limited here.

[0123] The above-mentioned range hood control method, device, equipment and range hood equipment, the range hood includes a hood module and a fan module, the hood module is used to absorb and discharge the oil smoke in the target area representing the range of action of the range hood, so as to purify the air, and the fan module is used to supply air to the target area, so as to reduce the temperature, and the range hood control method includes: obtaining the oil smoke concentration in the target area, determining the target air supply state based on the oil smoke concentration and the preset oil smoke concentration threshold, and controlling the fan module to operate so that the fan module is in the target air supply state. Thus, by controlling the operating state of the fan module according to the size of the detected oil smoke concentration to control the size of the air supply airflow, the air supply airflow and the oil smoke airflow can be better balanced, so that the air supplied by the fan module can both reduce the temperature and reduce the impact on the oil smoke absorption effect of the range hood, thereby improving the working reliability of the range hood.

[0124] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0125] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0126] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0127] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0128] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0129] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A range hood control method, characterized in that: The range hood comprises a range hood module and a fan module, wherein the range hood module is used to absorb and discharge the oil smoke in a target area, and the fan module is used to supply air to the target area, and the target area is the action area of ​​the range hood; The method comprises: Acquire the oil smoke concentration of the target area; Determining a target air supply state based on the oil fume concentration and a preset oil fume concentration threshold; The fan module is controlled to operate so that the fan module is in the target air supply state.

2. The method according to claim 1, characterized in that The determining of the target air supply state based on the oil fume concentration and a preset oil fume concentration threshold comprises: When the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low-speed state; and the air supply volume of the fan module in the low-speed state is less than the standard air supply volume.

3. The method according to claim 2, characterized in that When the oil fume concentration is greater than the preset oil fume concentration threshold, determining the target air supply state to be a low speed state includes: When the oil fume concentration is greater than the preset oil fume concentration threshold, the target air supply state is determined to be a low speed gear; and the air supply volume of the fan module at the low speed gear is less than the standard air supply volume.

4. The method according to claim 1, characterized in that: The determining of the target air supply state based on the oil fume concentration and a preset oil fume concentration threshold comprises: When the oil smoke concentration is less than the preset oil smoke concentration threshold, determining an initial air supply state; the initial air supply state includes a low speed state and a high speed state; the air supply volume of the fan module in the high speed state is greater than the standard air supply volume; According to the fed-back user instruction, a target air supply state is determined; the user instruction is generated based on the initial air supply state.

5. The method according to claim 4, characterized in that When the oil smoke concentration is less than the preset oil smoke concentration threshold, determining the initial air supply state includes: When the oil fume concentration is less than the preset oil fume concentration threshold, the initial air supply state is determined to be a low speed gear or a high speed gear; the air supply volume of the fan module at the high speed gear is greater than the air supply volume at the low speed gear.

6. The method according to claim 5, characterized in that The high-speed gear includes a first high-speed gear and a second high-speed gear, and the air supply volume of the fan module at the first high-speed gear is less than the air supply volume at the second high-speed gear; when the oil fume concentration is less than the preset oil fume concentration threshold, determining that the initial air supply state is a low-speed gear or a high-speed gear includes: When the oil smoke concentration is greater than or equal to the preset lower limit of concentration and less than the preset oil smoke concentration threshold, determining that the initial air supply state is a low speed gear or a first high speed gear; When the oil smoke concentration is less than the preset concentration lower limit, the initial air supply state is determined to be a low speed gear, a first high speed gear or a second high speed gear.

7. A range hood control device, characterized in that: The range hood comprises a range hood module and a fan module, wherein the range hood module is used to absorb and discharge the oil smoke in a target area, and the fan module is used to supply air to the target area, and the target area is the action area of ​​the range hood; the device comprises: A concentration acquisition module, used to acquire the oil smoke concentration of the target area; An air supply state determination module, used to determine a target air supply state based on the oil fume concentration and a preset oil fume concentration threshold; The air supply state control module is used to control the operation of the fan module so that the fan module is in the target air supply state.

8. A range hood control device, characterized in that: It includes a smoke detection device and a controller. The smoke detection device is arranged on the range hood to detect the smoke concentration in the target area and send it to the controller. The target area is the working area of ​​the range hood. The controller is used to control the range hood according to the method according to any one of claims 1-6.

9. A fume extraction device, characterized in that: It comprises a range hood and a range hood control device as claimed in claim 8, wherein the range hood comprises a hood module and a fan module, the hood module is used to absorb oil smoke in a target area and discharge it, the fan module is used to supply air to the target area, and the target area is the effective area of ​​the range hood.

10. The range fumes extraction device according to claim 9, characterized in that: The fan module includes an air inlet, an air outlet and a wind wheel, wherein the wind wheel is arranged between the air inlet and the air outlet and is also connected to the controller, and the air inlet and the air outlet are connected to the target area.

11. The range fumes extraction device according to claim 10, characterized in that: The fan module also includes a panel assembly, which is connected to the controller and is slidably disposed at the air outlet.

12. The range fumes extraction device according to claim 9, characterized in that: The range hood further comprises a cover plate assembly, and the fan module is arranged in the cover plate assembly.

13. The range fumes extraction device according to claim 9, characterized in that: The range hood module comprises an oil smoke inlet, a volute assembly and an oil smoke outlet which are arranged in sequence.

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