Range hood and control method, system, equipment and program product thereof

Abstract

The invention provides a range hood and a control method, system, equipment and program product thereof. The range hood comprises a composite filter screen, a filter screen and a control device, the composite filter screen is arranged in an air duct between the air inlet and the fan so as to filter oil smoke flowing through the air duct; a preset angle is formed between the central surface of the composite filter screen and the interface of the air duct; the composite filter screen comprises a plurality of layers of overlapped perforated screens with large hole diameters, and meshes of every two adjacent layers of perforated screens are crossed and overlapped. According to the invention, the composite filter screen obtained by staggering and overlapping the plurality of layers of perforated filter screens with large holes is used for filtering the middle end of the range hood, each layer of perforated filter screen can be pulled out when the whole composite filter screen is cleaned, and only each layer of perforated filter screen and the fixed frame of the whole composite filter screen need to be cleaned; as the filter screen with large holes does not have too small meshes, the problem that the meshes are blocked and are not easy to clean is solved, the filter screen is easy to disassemble, assemble and clean, and the convenience and the cleaning efficiency are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of household appliances, and in particular to a range hood and a control method, system, device and program product thereof. Background Art

[0002] The cleaning of range hoods has attracted more and more attention from users. Currently, there are many methods for cleaning range hoods. From the cleaning position in the entire air duct, they can be roughly divided into front-end filtration and rear-end filtration. Among them, front-end filtration basically relies on filter blocking filtration or collision separation design, and rear-end filtration refers to the separation of oil smoke through the rotation of the centrifugal fan.

[0003] The front-end filter is usually at the suction port, and the oil smoke is filtered by dense small holes, and the oil smoke enters the impeller directly for separation. The front-end filter can be disassembled and cleaned by the user himself, without the need for professional personnel, but the accumulation of oil and dirt in this structure can easily affect the appearance, and it is not very convenient for users to disassemble it. In addition, the oil and dirt block the small hole net and it is very difficult to clean.

[0004] The rear filter relies on the centrifugal force of the centrifugal impeller of the main fan to separate the oil smoke, so an oil film and oil accumulation will form on the surface of the impeller and the inner wall of the volute. Although the front end feels clean to the user, the oil is mainly transferred to the inside of the range hood, the air duct and the fan. Long-term accumulation of oil will affect the performance of the fan. In addition, the accumulation of oil will block the small holes in the silencer cavity, causing the noise to increase. In addition, the cleaning of the rear filter is more difficult and requires professional cleaning. Users cannot complete the cleaning by themselves.

[0005] Currently, both forms cannot solve the problems of high-efficiency filtration, easy disassembly, and easy cleaning, while ensuring the beauty of the range hood and the aerodynamic and noise performance of the range hood. Summary of the invention

[0006] The technical problem to be solved by the present disclosure is to overcome the above-mentioned defects in the prior art and to provide a range hood and a control method, system, device and program product thereof.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] The present disclosure provides a range hood, the range hood comprising: a composite filter;

[0009] The composite filter is arranged in the air duct between the air inlet and the fan to filter the oil smoke flowing through the air duct; the central plane of the composite filter and the interface of the air duct are at a preset angle; the composite filter includes multiple layers of superimposed open mesh with large pore diameters, and the meshes of two adjacent layers of open mesh cross-overlap.

[0010] Optionally, the range hood further comprises: a frame;

[0011] The frame is arranged on the inner wall of the air duct and has an opening facing outward;

[0012] The inner wall of the frame is provided with a plurality of track grooves inwardly along the opening, so that each layer of the open-hole mesh can be inserted into or pulled out of the air duct along the track grooves.

[0013] Optionally, the range hood further comprises: a buckle and a pull-out button;

[0014] When the composite filter is inserted into the frame and reaches a preset position, the buckle is locked to fix the composite filter;

[0015] When the extraction button is pressed, the buckle opens.

[0016] Optionally, the range hood further comprises: a pressure sensor;

[0017] The pressure sensors are respectively arranged at the front and rear sides of the composite filter to detect the pressure difference before and after the composite filter;

[0018] and / or,

[0019] The range hood further comprises: an in-situ detection device;

[0020] The in-situ detection device is used to detect whether the composite filter is inserted into the frame to reach a preset position.

[0021] The present disclosure also provides a control method for a range hood, wherein the range hood is the aforementioned range hood, and the control method comprises:

[0022] Obtaining the front side pressure and the rear side pressure of the composite filter screen collected by the pressure sensor;

[0023] Calculate the pressure difference according to the front side pressure and the rear side pressure;

[0024] In response to the pressure difference being greater than a preset pressure threshold, a prompt is provided to clean the composite filter.

[0025] Optionally, the control method further includes:

[0026] In response to the cumulative usage time of the composite filter being greater than a preset time threshold, a prompt is provided to clean the composite filter.

[0027] Optionally, the control method further includes:

[0028] Acquiring the in-situ state of the composite filter detected by an in-situ detection device;

[0029] In response to the in-place state being converted from the out-of-place state to the in-place state, the accumulated usage time of the composite filter is reset.

[0030] The present disclosure also provides a control system for a range hood, the range hood being the aforementioned range hood, the control system comprising: an acquisition module, a pressure difference calculation module and a prompt module;

[0031] The acquisition module is used to acquire the front side pressure and the rear side pressure of the front and rear sides of the composite filter screen collected by the pressure sensor;

[0032] The pressure difference calculation module is used to calculate the pressure difference according to the front side pressure and the rear side pressure;

[0033] The prompt module is used for prompting to clean the filter in response to the pressure difference being greater than a preset pressure threshold.

[0034] Optionally, the prompt module is further used to prompt cleaning of the composite filter in response to the cumulative usage time of the composite filter being greater than a preset time threshold.

[0035] Optionally, the control system further comprises: a zeroing module;

[0036] The acquisition module is also used to acquire the in-situ state of the composite filter detected by the in-situ detection device;

[0037] The reset module is used for resetting the accumulated usage time of the composite filter in response to the in-place state being converted from the out-of-place state to the in-place state.

[0038] The present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and used to run on the processor, and the processor implements the aforementioned range hood control method when executing the computer program.

[0039] The present disclosure also provides a computer program product, including a computer program, wherein the computer program implements the aforementioned range hood control method when executed by a processor.

[0040] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0041] The positive progressive effect of the present invention is that a composite filter obtained by staggeredly stacking multiple layers of large-pore open-pore filters is used for mid-end filtering of the range hood. When cleaning the entire composite filter, each layer of open-pore filters can be pulled out, and only each layer of open-pore filters and the fixed frame of the entire composite filter need to be cleaned. Since the large-pore filter does not have too small meshes when cleaning, the problem of mesh blockage and difficulty in cleaning is solved, and the filter is easy to disassemble and install, and easy to clean, thereby improving convenience and cleaning efficiency. In addition, the processing of each layer of open-pore filters is simple and low-cost, and no small-pore structure electro-corrosion processing method is required, thereby saving a lot of cost. At the same time, the composite filter can play a role of sound insulation and sound absorption between the fan and the air inlet (suction port), reduce the diffusion of fan noise, and reduce the noise of the entire machine. The composite filter has a strong filtering effect. On the one hand, the oil smoke can collide with the cross filter multiple times, and multiple collision separations can be achieved, while Moreover, the multi-layer composite filter can form fine holes as a whole, and the filtering effect is equivalent to that of small holes. In addition, the overall filtering effect of multiple collisions is far better than that of a single-layer small hole structure. The composite filter is inside the air duct, and a small amount of oil stains on the filter are not easy to be directly perceived, and the aesthetics is strong. The composite filter is located inside the air duct, and the airflow inhaled from the air inlet has been completely mixed, and the oil smoke is well evenly distributed in the airflow. The effective area of ​​the composite filter for filtering oil smoke is equivalent to the total filter area, thereby improving the efficiency of filtering oil smoke. The composite filter is located upstream of the fan, which can effectively reduce the impact of oil smoke on the rear-end volute, impeller and silencer, thereby eliminating the trouble of cleaning the impeller. At the same time, the silencer hole of the silencer chamber is not easily blocked by oil smoke, and long-term use will not reduce the noise reduction effect of the silencer chamber. The control method of the range hood that detects the clogged filter can intelligently determine the degree of filter blockage and promptly remind you to clean the filter without worrying about the mesh being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A front view of a range hood provided in Embodiment 1 of the present disclosure;

[0043] Figure 2 A perspective view of a range hood provided in Embodiment 1 of the present disclosure;

[0044] Figure 3 A structural diagram of a composite filter and frame of a range hood provided in Example 1 of the present disclosure;

[0045] Figure 4 A partial structural diagram of a composite filter and a frame of a range hood provided in Example 1 of the present disclosure;

[0046] Figure 5 A schematic diagram of a stacking process of a five-layer composite filter screen of a range hood provided in Example 1 of the present disclosure;

[0047] Figure 6 A schematic diagram of a module of a range hood provided in Embodiment 1 of the present disclosure;

[0048] Figure 7 A flow chart of a range hood control method provided in Embodiment 2 of the present disclosure;

[0049] Figure 8 A flowchart of a specific implementation of a range hood control method provided in Example 2 of the present disclosure;

[0050] Fig. 9 A schematic diagram of a control system for a range hood provided in Embodiment 3 of the present disclosure;

[0051] Fig.10 A module schematic diagram of an electronic device provided in Embodiment 4 of the present disclosure. DETAILED DESCRIPTION

[0052] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0053] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0054] Example 1

[0055] The present invention provides a range hood, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the range hood comprises: a composite filter 1.

[0056] The composite filter 1 is arranged in the air duct between the air inlet and the fan to filter the oil smoke flowing through the air duct. The central plane of the composite filter 1 and the interface of the air duct are at a preset angle. The composite filter 1 includes multiple layers of stacked open mesh with large pore diameters, and the meshes of two adjacent layers of open mesh overlap crosswise. The stacking process of the composite filter example with 5 layers of stacked open mesh is as follows: Figure 5 shown.

[0057] Among them, the range hood has a side air duct function that can be horizontally extended and folded, and adopts a mid-end filtering method.

[0058] Mid-range filtration is close to the square or rectangular air duct between the air inlet (suction port) and the fan, close to the fan side. On the one hand, the square or rectangular air duct matches the filter, and the oil stains on the filter on the side close to the fan will not be directly seen and affect the vision. The air duct is designed with a track for inserting and removing the filter, and the composite filter is fixed to the range hood air duct through a bayonet. When installing, it will automatically lock when pressed hard, and it will automatically open when the open button is pressed hard. After the composite filter is installed and locked, it does not affect the appearance.

[0059] In European-style machines, the air duct is approximately square, so only one composite filter is needed; while for side low-suction range hoods, since the air duct is wider, the composite filter can be divided into multiple parts and cover the entire range hood air duct side by side.

[0060] Small hole open mesh: The diameter of the single-layer filter hole is less than 10mm (millimeter), and the diameter of the circumscribed circle of non-circular holes is less than 10mm.

[0061] Large-hole open mesh: The diameter of the single-layer filter hole is greater than 10mm, and the diameter of the circumscribed circle of non-circular holes is greater than 10mm.

[0062] In addition, due to the structural design of the user's kitchen, users generally have the habit of using one stove for frying and another stove for steaming. As a result, one side of the range hood suction port absorbs more oil fume and the other side absorbs less oil fume. After long-term use, the oil net at the front end will filter more oil fume on one side of the filter and less oil fume on the other side. The actual filtering area of ​​the filter is smaller than the area of ​​the oil net, and the filtering efficiency is poor. Long-term use will cause one side of the filter to be seriously clogged with oil stains, while the other side will be less clogged, which seriously affects the filtering efficiency. The range hood in this embodiment can also cope with this situation well. Since the composite filter is located inside the air duct, the airflow inhaled from the air inlet has been completely mixed, and the oil fume is well evenly distributed in the airflow. The effective area of ​​the composite filter to filter oil fume is equal to the total filter area, thereby improving the efficiency of filtering oil fume.

[0063] In the present embodiment, a composite filter screen obtained by staggeredly stacking multiple layers of large-pore open-pore filter screens is used for mid-end filtration of the range hood. Each layer of the open-pore filter screen can be pulled out for cleaning, and only each layer of the open-pore filter screen and the fixed frame of the entire composite filter screen need to be cleaned. Since the large-pore filter screen does not have too small mesh holes when cleaning, the problem of mesh blockage and difficulty in cleaning is solved, and the filter screen is easy to disassemble and install, and easy to clean, thereby improving convenience and cleaning efficiency. In addition, the processing of each layer of the open-pore filter screen is simple and low-cost, and no small-pore structure electro-corrosion processing method is required, thereby saving a lot of cost. At the same time, the composite filter screen can play a role of sound insulation and sound absorption between the fan and the air inlet (suction port), reduce the diffusion of fan noise, and can reduce the noise of the entire machine. The composite filter screen has a strong filtering effect. On the one hand, the oil smoke can collide with the cross filter screen multiple times, and multiple collision separations can be achieved. In addition, the multiple layers The composite filter as a whole can form tiny holes with filtering effect equivalent to that of small holes, and the overall filtering effect due to multiple collisions is far better than that of a single-layer small hole structure; the composite filter is inside the air duct, and a small amount of oil stains on the filter are not easily perceived directly, and the aesthetics are strong; the composite filter is located inside the air duct, and the airflow inhaled from the air inlet has been completely mixed, and the oil smoke is well evenly distributed in the airflow. The effective area of ​​the composite filter for filtering oil smoke is equivalent to the total filter area, thereby improving the efficiency of filtering oil smoke; the composite filter is located upstream of the fan, which can effectively reduce the impact of oil smoke on the rear-end volute, impeller and silencer, thereby eliminating the trouble of cleaning the impeller. At the same time, the silencer holes of the silencer chamber are not easily clogged by oil smoke, and long-term use will not reduce the noise reduction effect of the silencer chamber; the control method of the range hood that detects filter blockage can intelligently determine the degree of filter blockage and promptly remind you to clean the filter without worrying about the mesh being clogged.

[0064] In one embodiment, the range hood further comprises: a frame 2 .

[0065] The frame 2 is arranged on the inner wall of the air duct and has an opening facing outward.

[0066] The inner wall of the frame 2 is provided with a plurality of track grooves inwardly along the opening, so that each layer of the perforated mesh can be inserted into or pulled out of the air duct along the track grooves.

[0067] The meshes of two adjacent layers of open mesh can be cross-overlapped by setting the lengths of adjacent track grooves to different lengths.

[0068] In one embodiment, referring to Figure 6 The range hood further comprises: a buckle 3 and a pull-out button 4.

[0069] When the composite filter 1 is inserted into the frame 2 and reaches a preset position, the buckle 3 is locked to fix the composite filter 1 .

[0070] When the pull-out button 4 is pressed, the buckle 3 opens.

[0071] In one embodiment, the range hood further includes: a pressure sensor 5 .

[0072] The pressure sensors 5 are respectively arranged at the front and rear sides of the composite filter screen 1 to detect the pressure difference before and after the composite filter screen 1 .

[0073] In one embodiment, the range hood further comprises: an on-site detection device 6 .

[0074] The in-place detection device 6 is used to detect whether the composite filter screen 1 has been inserted into the frame 2 and has reached a preset position.

[0075] Example 2

[0076] Figure 7 This is a flow chart of a control method of a range hood provided by an exemplary embodiment of the present disclosure. The range hood is the aforementioned range hood. The control method includes:

[0077] S11, obtaining the front side pressure and the rear side pressure of the front and rear sides of the composite filter collected by the pressure sensor.

[0078] S12. Calculate the pressure difference according to the front side pressure and the rear side pressure.

[0079] S13: In response to the pressure difference being greater than a preset pressure threshold, a prompt is provided to clean the composite filter.

[0080] The pressure sensor detects the pressure difference before and after the composite filter. The pressure difference between the front and rear ends of the composite filter determines the amount of oil pollution. When the designed pressure difference is reached, the oil filter will be reminded to clean through voice, light or screen display.

[0081] The cumulative usage time of the range hood can be determined by the removal and insertion of the composite filter and the use of the range hood.

[0082] The removal and insertion of the composite filter can be sensed in a variety of ways, such as micro switch current, infrared detection, etc.

[0083] By detecting the clogged filter, the control method of the range hood can intelligently determine the degree of filter blockage and promptly remind you to clean the filter without worrying about the mesh being clogged.

[0084] The pressure threshold can be set according to actual conditions.

[0085] In the present embodiment, a composite filter screen obtained by staggeredly stacking multiple layers of large-pore open-pore filter screens is used for mid-end filtration of the range hood. Each layer of the open-pore filter screen can be pulled out for cleaning, and only each layer of the open-pore filter screen and the fixed frame of the entire composite filter screen need to be cleaned. Since the large-pore filter screen does not have too small mesh holes when cleaning, the problem of mesh blockage and difficulty in cleaning is solved, and the filter screen is easy to disassemble and install, and easy to clean, thereby improving convenience and cleaning efficiency. In addition, the processing of each layer of the open-pore filter screen is simple and low-cost, and no small-pore structure electro-corrosion processing method is required, thereby saving a lot of cost. At the same time, the composite filter screen can play a role of sound insulation and sound absorption between the fan and the air inlet (suction port), reduce the diffusion of fan noise, and can reduce the noise of the entire machine. The composite filter screen has a strong filtering effect. On the one hand, the oil smoke can collide with the cross filter screen multiple times, and multiple collision separations can be achieved. In addition, the multiple layers The composite filter as a whole can form tiny holes with filtering effect equivalent to that of small holes, and the overall filtering effect due to multiple collisions is far better than that of a single-layer small hole structure; the composite filter is inside the air duct, and a small amount of oil stains on the filter are not easily perceived directly, and the aesthetics are strong; the composite filter is located inside the air duct, and the airflow inhaled from the air inlet has been completely mixed, and the oil smoke is well evenly distributed in the airflow. The effective area of ​​the composite filter for filtering oil smoke is equivalent to the total filter area, thereby improving the efficiency of filtering oil smoke; the composite filter is located upstream of the fan, which can effectively reduce the impact of oil smoke on the rear-end volute, impeller and silencer, thereby eliminating the trouble of cleaning the impeller. At the same time, the silencer holes of the silencer chamber are not easily clogged by oil smoke, and long-term use will not reduce the noise reduction effect of the silencer chamber; the control method of the range hood that detects filter blockage can intelligently determine the degree of filter blockage and promptly remind you to clean the filter without worrying about the mesh being clogged.

[0086] In one embodiment, the control method further includes:

[0087] In response to the cumulative usage time of the composite filter being greater than a preset time threshold, a prompt is provided to clean the composite filter.

[0088] The duration threshold may be set according to actual conditions.

[0089] In one embodiment, referring to Figure 8 , the control method further includes:

[0090] S14, obtaining the in-situ status of the composite filter detected by the in-situ detection device.

[0091] S15. In response to the in-place state being converted from the out-of-place state to the in-place state, the accumulated usage time of the composite filter is reset to zero.

[0092] Example 3

[0093] Corresponding to the aforementioned range hood control method embodiment, the present disclosure also provides an embodiment of a range hood control system.

[0094] Fig. 9 A module diagram of a range hood control system provided by an exemplary embodiment of the present disclosure, the system comprises: an acquisition module 21, a pressure difference calculation module 22 and a prompt module 23.

[0095] The acquisition module 21 is used to acquire the front side pressure and the rear side pressure of the front and rear sides of the composite filter screen collected by the pressure sensor.

[0096] The pressure difference calculation module 22 is used to calculate the pressure difference according to the front side pressure and the rear side pressure.

[0097] The prompt module 23 is used for prompting to clean the filter in response to the pressure difference being greater than a preset pressure threshold.

[0098] In the present embodiment, a composite filter screen obtained by staggeredly stacking multiple layers of large-pore open-pore filter screens is used for mid-end filtration of the range hood. Each layer of the open-pore filter screen can be pulled out for cleaning, and only each layer of the open-pore filter screen and the fixed frame of the entire composite filter screen need to be cleaned. Since the large-pore filter screen does not have too small mesh holes when cleaning, the problem of mesh blockage and difficulty in cleaning is solved, and the filter screen is easy to disassemble and install, and easy to clean, thereby improving convenience and cleaning efficiency. In addition, the processing of each layer of the open-pore filter screen is simple and low-cost, and no small-pore structure electro-corrosion processing method is required, thereby saving a lot of cost. At the same time, the composite filter screen can play a role of sound insulation and sound absorption between the fan and the air inlet (suction port), reduce the diffusion of fan noise, and can reduce the noise of the entire machine. The composite filter screen has a strong filtering effect. On the one hand, the oil smoke can collide with the cross filter screen multiple times, and multiple collision separations can be achieved. In addition, the multiple layers The composite filter as a whole can form tiny holes with filtering effect equivalent to that of small holes, and the overall filtering effect due to multiple collisions is far better than that of a single-layer small hole structure; the composite filter is inside the air duct, and a small amount of oil stains on the filter are not easily perceived directly, and the aesthetics are strong; the composite filter is located inside the air duct, and the airflow inhaled from the air inlet has been completely mixed, and the oil smoke is well evenly distributed in the airflow. The effective area of ​​the composite filter for filtering oil smoke is equivalent to the total filter area, thereby improving the efficiency of filtering oil smoke; the composite filter is located upstream of the fan, which can effectively reduce the impact of oil smoke on the rear-end volute, impeller and silencer, thereby eliminating the trouble of cleaning the impeller. At the same time, the silencer holes of the silencer chamber are not easily clogged by oil smoke, and long-term use will not reduce the noise reduction effect of the silencer chamber; the control method of the range hood that detects filter blockage can intelligently determine the degree of filter blockage and promptly remind you to clean the filter without worrying about the mesh being clogged.

[0099] In one embodiment, the prompt module 23 is further configured to prompt the user to clean the composite filter in response to the cumulative usage time of the composite filter being greater than a preset time threshold.

[0100] In one embodiment, the control system further includes: a clearing module 24 .

[0101] The acquisition module 21 is also used to acquire the in-situ state of the composite filter detected by the in-situ detection device.

[0102] The reset module 24 is used for resetting the accumulated usage time of the composite filter screen in response to the in-place state being converted from the out-of-place state to the in-place state.

[0103] As for the system embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The system embodiment described above is only illustrative, wherein the units described as separate components may or may not be physically separated, and the components as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the disclosed solution.

[0104] Example 4

[0105] Fig.10 This is a structural schematic diagram of an electronic device shown in an example embodiment of the present disclosure, the electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor, and when the processor executes the computer program, the control method of the range hood described in any of the above embodiments is implemented. Fig.10 The electronic device 90 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0106] like Fig.10 As shown, the electronic device 90 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 90 may include, but are not limited to: at least one processor 91, at least one memory 92, and a bus 93 connecting different system components (including the memory 92 and the processor 91).

[0107] The bus 93 includes a data bus, an address bus, and a control bus.

[0108] The memory 92 may include a volatile memory, such as a random access memory (RAM) 921 and / or a cache memory 922 , and may further include a read only memory (ROM) 923 .

[0109] The memory 92 may also include a program tool 925 (or utility) having a set (at least one) of program modules 924, such program modules 924 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0110] The processor 91 executes various functional applications and data processing by running the computer program stored in the memory 92, such as the control method of the range hood provided in any of the above embodiments.

[0111] The electronic device 90 may also communicate with one or more external devices 94 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 95. Furthermore, the electronic device 90 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 96. As shown, the network adapter 96 communicates with other modules of the electronic device 90 via a bus 93. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 90, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0112] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0113] Example 5

[0114] The embodiment of the present disclosure further provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the control method of the range hood described in any one of the above items is implemented.

[0115] Among them, the program code for executing the computer program product of the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0116] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A range hood, characterized in that: The range hood comprises: a composite filter; The composite filter is arranged in the air duct between the air inlet and the fan to filter the oil smoke flowing through the air duct; The central plane of the composite filter and the interface of the air duct are at a preset angle; The composite filter screen comprises multiple layers of superimposed open mesh with large pore diameters, and the meshes of two adjacent layers of open mesh are cross-overlapped.

2. The range hood according to claim 1, characterized in that: The range hood further comprises: a frame; The frame is arranged on the inner wall of the air duct and has an opening facing outward; The inner wall of the frame is provided with a plurality of track grooves inwardly along the opening, so that each layer of the open-hole mesh can be inserted into or pulled out of the air duct along the track grooves.

3. The range hood according to claim 2, characterized in that: The range hood further comprises: a buckle and a pull-out button; When the composite filter is inserted into the frame and reaches a preset position, the buckle is locked to fix the composite filter; When the extraction button is pressed, the buckle opens.

4. The range hood according to claim 2, characterized in that: The range hood further comprises: a pressure sensor; The pressure sensors are respectively arranged at the front and rear sides of the composite filter to detect the pressure difference before and after the composite filter; and / or, The range hood further comprises: an in-situ detection device; The in-situ detection device is used to detect whether the composite filter is inserted into the frame to reach a preset position.

5. A method for controlling a range hood, characterized in that: The range hood is a range hood according to any one of claims 1 to 4, and the control method comprises: Obtaining the front side pressure and the rear side pressure of the composite filter screen collected by the pressure sensor; Calculate the pressure difference according to the front side pressure and the rear side pressure; In response to the pressure difference being greater than a preset pressure threshold, a prompt is provided to clean the composite filter.

6. The control method of the range hood according to claim 5, characterized in that: The control method further comprises: In response to the cumulative usage time of the composite filter being greater than a preset time threshold, a prompt is provided to clean the composite filter.

7. The control method of the range hood according to claim 6, characterized in that: The control method further comprises: Acquiring the in-situ state of the composite filter detected by an in-situ detection device; In response to the in-place state being converted from the out-of-place state to the in-place state, the accumulated usage time of the composite filter is reset.

8. A range hood control system, characterized in that: The range hood is a range hood according to any one of claims 1 to 4, and the control system comprises: an acquisition module, a pressure difference calculation module and a prompt module; The acquisition module is used to acquire the front side pressure and the rear side pressure of the front and rear sides of the composite filter screen collected by the pressure sensor; The pressure difference calculation module is used to calculate the pressure difference according to the front side pressure and the rear side pressure; The prompt module is used for prompting to clean the filter in response to the pressure difference being greater than a preset pressure threshold.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, characterized in that: When the processor executes the computer program, the control method of the range hood according to any one of claims 5 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the control method of the range hood according to any one of claims 5 to 7 is implemented.

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