Control method and device for self-cleaning of a range hood, and range hood

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a control method for self-cleaning of a range hood, the range hood comprising an oil screen and a heating device arranged corresponding to the oil screen, the method comprising: acquiring an area of the oil screen; determining a heating instruction corresponding to the area of the oil screen; and controlling the heating device to execute the heating instruction to melt oil stains of the oil screen. In the cleaning mode, when the heating device is controlled to heat the oil screen to melt the oil stains attached to the oil screen, the heating instruction corresponding to the area of the oil screen can be executed, the output heat quantity is controlled, and the generated heat quantity can be used to comprehensively and completely clean the oil stains on the oil screen. Therefore, different heating instructions can be executed according to different areas of the oil screen, the accuracy of the output heat quantity is improved, and the cleaning effect of the range hood is improved. The application further discloses a control device for cleaning of a range hood and the range hood.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, such as a control method and device for self-cleaning of a range hood, and a range hood. Background Technology

[0002] With the development of society and the economy and the gradual improvement of people's living standards, people are paying more and more attention to the quality of their homes, especially kitchen health. Range hoods have long been an indispensable appliance in our kitchens. However, over time, a layer of grease and oil accumulates on the surface of the filter screen. If not cleaned regularly, this easily breeds bacteria, seriously affecting the internal hygiene of the range hood and its grease-filtering effect. In such cases, physical disassembly and cleaning are usually used to achieve the purpose of cleaning. However, this cleaning method is time-consuming and labor-intensive, unsuitable for frequent disassembly and cleaning, and the accumulated grease is extremely difficult to remove.

[0003] Currently, there are products on the market that use electric heating to clean the oil fumes attached to the oil screen of range hoods. However, there are problems with the difficulty in controlling the heat output during heating, resulting in incomplete and inadequate cleaning. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] This disclosure provides a control method and device for self-cleaning of a range hood, and a range hood in general, to solve the technical problem that it is difficult to control the output heat capacity when cleaning a range hood by heating, resulting in incomplete and inadequate cleaning.

[0006] In some embodiments, the range hood includes an oil filter and a heating device corresponding to the oil filter. The method includes: obtaining the area of ​​the oil filter; determining a heating command corresponding to the area of ​​the oil filter; and controlling the heating device to execute the heating command to melt the oil stains on the oil filter.

[0007] In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the aforementioned control method for self-cleaning of a range hood when the program instructions are executed.

[0008] In some embodiments, the range hood includes: an oil filter, a heating device disposed corresponding to the oil filter; and the aforementioned control device for self-cleaning of the range hood.

[0009] The control method and device for self-cleaning of range hoods and the range hoods provided in this disclosure can achieve the following technical effects:

[0010] In cleaning mode, the heating device, while heating the oil filter to melt the grease adhering to it, executes heating commands corresponding to the area of ​​the oil filter, thus controlling the output heat to ensure that the generated heat thoroughly cleans the grease on the filter. This allows for different heating commands to be executed based on different oil filter areas, improving the accuracy of heat output and ultimately enhancing the cleaning effect of the range hood.

[0011] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0013] Figure 1 This is a schematic diagram of a control method for self-cleaning of a range hood provided in an embodiment of this disclosure;

[0014] Figure 2 This is a schematic diagram of a control device for self-cleaning of a range hood provided in an embodiment of this disclosure;

[0015] Figure 3 This is a schematic diagram of the structure of the range hood provided in the embodiments of this disclosure;

[0016] Figure 4 This is a right view of the range hood provided in an embodiment of this disclosure;

[0017] Figure 5 yes Figure 4 A cross-sectional schematic diagram;

[0018] Figure 6 This is a schematic diagram of another control method for self-cleaning of a range hood provided in an embodiment of this disclosure. Detailed Implementation

[0019] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0020] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0021] Unless otherwise stated, the term "multiple" means two or more.

[0022] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0023] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0024] This disclosure applies to a range hood. During cooking, cooking fumes enter the range hood through an oil filter. Grease or oil stains from the fumes adhere to the oil filter, which can negatively impact the range hood's efficiency over time, necessitating cleaning. Common technologies use a heating device corresponding to the oil filter to generate heat and melt the grease, thus cleaning the range hood. Therefore, this disclosure provides a control method for self-cleaning a range hood, controlling the heat output of the heating device to improve the cleaning effect.

[0025] Combination Figure 1 As shown in the embodiments of this disclosure, a control method for self-cleaning of a range hood includes:

[0026] Step S01: Obtain the area of ​​the oil mesh.

[0027] Here, the area of ​​the oil mesh can be one or more of the following: the surface area of ​​the oil mesh, the projected area relative to the heating device, or the area to be cleaned. It can be part or all of the surface area of ​​the oil mesh, or it can be the area of ​​part or all of the regions of multiple oil meshes.

[0028] For example, the range hood stores the area of ​​the grease filters. When heating cleaning is required, the system automatically retrieves and processes this stored value. Another example is acquiring images of the grease filters using a camera or other image acquisition device, and determining the area of ​​the grease filters to be cleaned through image processing. Yet another example is allowing the user to input information specifying that some or all of the grease filters need cleaning; the system then retrieves the area corresponding to that specific area as the required cleaning area.

[0029] Step S02: Determine the heating command corresponding to the area of ​​the oil mesh.

[0030] The range hood has a pre-set mapping between the area of ​​the grease filter and heating commands, allowing the expected heating command to be determined based on the grease filter area. These heating commands are stored in the range hood's memory and can be communicated to the user via mobile devices such as smartphones, or via smart home appliances with display functions such as televisions, refrigerators, and computers that communicate with the range hood.

[0031] Here, heating command refers to the adjustment command for controlling the heating device to output different amounts of heat, so that it can be adapted to oil mesh of different areas.

[0032] Step S03: Control the heating device to execute the heating command to melt the oil stains on the oil mesh.

[0033] The control method for self-cleaning of range hoods provided in this embodiment allows the heating device to execute heating commands corresponding to the area of ​​the oil filter when heating it to melt the grease adhering to it in cleaning mode. This controls the output heat, ensuring that the generated heat thoroughly cleans the grease on the filter. By executing different heating commands based on different oil filter areas, the accuracy of the output heat is improved, thereby enhancing the cleaning effect of the range hood.

[0034] Optionally, determining a cleaning instruction corresponding to the area of ​​the oil mesh includes: determining the amount of heat required to heat the oil mesh based on its area; and determining a corresponding heating instruction based on the required amount of heat.

[0035] Here, the range hood stores the heat required for cleaning different grease trap areas. This data can be acquired through big data analysis during the range hood design phase, or adjusted by users' frequently used settings during operation. The user's frequently used settings data, combined with the grease trap area to be cleaned, are integrated into a model, uploaded to the system, and stored to generate heat values ​​corresponding to the grease trap area. This data is then used to determine the appropriate heating command based on the required heat.

[0036] Optionally, the area of ​​the oil mesh is proportional to the amount of heat required to heat it. The larger the area of ​​the oil mesh to be cleaned, the more heat is required to heat it.

[0037] Optionally, the amount of heat required to heat the oil mesh is determined as follows:

[0038] Q = k × S × (T1 - T2) (1)

[0039] Where Q is the heat required to heat the oil mesh, S is the area of ​​the oil mesh, T1 is the cleaning temperature, T2 is the indoor ambient temperature, and k is the weighting coefficient.

[0040] Thus, according to Equation 1, the heat required to heat the oil mesh can be obtained through heat exchange over the area of ​​the oil mesh to be cleaned. Under the same indoor ambient temperature, the larger the area of ​​the oil mesh to be cleaned, the higher the heat required to heat the oil mesh. On the other hand, for the same oil mesh to be cleaned, the greater the difference between the indoor ambient temperature and the cleaning temperature, the higher the amount of heat required to heat the oil mesh during cleaning.

[0041] Optionally, the corresponding heating instruction can be determined based on the required heat, including: determining the heating power, or heating time, or heating power and heating time based on the required heat.

[0042] Generally, the heat required to heat the oil mesh is related to the heating power and heating time as follows:

[0043] Q=α×P×t (2)

[0044] Where Q is the heat required to heat the oil mesh, α is the electrothermal conversion efficiency of the heating device, P is the heating power of the heating device, and t is the heating time of the heating device.

[0045] Based on Equation 2, the heating power and / or heating time of the heating device can be set using the heat Q required to heat the oil network, obtained from Equation 1. Within the set time, the higher the required heat Q, the higher the heating power in the corresponding heating command; under the set power, the higher the required heat Q, the longer the heating time in the corresponding heating command. Alternatively, the heating time t and heating power P can be controlled in coordination with the required heat Q, based on the user's time requirements or the influence of power on the indoor ambient temperature.

[0046] Here, the following methods also exist for obtaining calories:

[0047] Q = c × m × (T1 - T2) (3)

[0048] Where Q is the amount of heat required to heat the oil mesh, c is the specific heat capacity of the device being heated (in this application, the specific heat capacity of the oil mesh material), m is the mass of the oil mesh, T1 is the cleaning temperature, and T2 is the indoor ambient temperature.

[0049] Optionally, according to Equations 1 and 3, under the same indoor ambient temperature, for the same range hood heating device, the higher the quality of the oil mesh, the greater the amount of heat required for heating. For oil meshes of the same material, with a fixed thickness, a larger area corresponds to a higher oil mesh quality m, and thus a higher heat value Q. Thus, the relationship between the heat value Q and the oil mesh area in Equation 1 can be obtained. Furthermore, for oil meshes of the same material, with a fixed area, a higher thickness corresponds to a higher oil mesh quality m. Thus, the relationship between the weighting coefficient k and the oil mesh thickness in Equation 1 can be obtained; that is, the higher the oil mesh thickness, the larger the value of the weighting coefficient k.

[0050] Optionally, according to Equations 1 and 2, it can be concluded that the value of the weighting coefficient k is related to the electrothermal conversion efficiency of the heating device. The weighting coefficient k is directly proportional to the electrothermal conversion efficiency; the higher the electrothermal conversion efficiency, the higher the value of the weighting coefficient k, and the higher the heat obtained under the same heating conditions.

[0051] Optionally, the electrothermal conversion efficiency is related to the density of the oil mesh. For the oil mesh, the denser the mesh, the higher the electrothermal conversion efficiency during heating. Therefore, the electrothermal conversion efficiency is inversely proportional to the size of the perforated mesh of the oil mesh; that is, the larger the perforated mesh size, the lower the electrothermal conversion efficiency. Alternatively, according to the discussion of Equations 1 and 2, the weighting coefficient k is directly proportional to the electrothermal conversion efficiency. Therefore, the weighting coefficient k is inversely proportional to the size of the perforated mesh of the oil mesh. That is, the larger the perforated mesh size of the oil mesh, the smaller the corresponding weighting coefficient k.

[0052] Here, the size of the perforated mesh of the oil filter can be pre-set in the range hood's storage system, or it can be obtained from a database pre-stored during the R&D phase, showing the perforated mesh size of the corresponding range hood model's oil filter. Alternatively, images of the oil filter can be acquired and analyzed using image acquisition devices such as cameras. The perforated mesh size of the oil filter can then be the average of the perforated mesh areas from multiple acquired regions.

[0053] The self-cleaning control method for range hoods provided in this disclosure, in cleaning mode, controls the heating device to execute heating commands corresponding to the area of ​​the oil filter when heating it to melt the grease adhering to it. This controls the output heat to ensure that the generated heat can thoroughly clean the grease on the filter. Thus, different heating commands can be executed according to different oil filter areas, improving the accuracy of the output heat and thereby enhancing the cleaning effect of the range hood.

[0054] Combination Figure 2As shown, this disclosure provides a control device for self-cleaning of a range hood, including a processor 100 and a memory 101. Optionally, the device may further include a communication interface 102 and a bus 103. The processor 100, communication interface 102, and memory 101 can communicate with each other via the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the control method for self-cleaning of a range hood described in the above embodiment.

[0055] Furthermore, the logic instructions in the aforementioned memory 101 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0056] The memory 101, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 100 executes functional applications and data processing by running the program instructions / modules stored in the memory 101, thereby implementing the control method for self-cleaning of the range hood in the above embodiments.

[0057] The memory 101 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 101 may include high-speed random access memory and may also include non-volatile memory.

[0058] This disclosure provides a range hood, including an oil filter, a heating device corresponding to the oil filter, and the aforementioned control device for self-cleaning of the range hood.

[0059] Thus, in the cleaning mode, the range hood provided in this embodiment can execute heating commands corresponding to the area of ​​the oil filter when heating the oil filter to melt the grease adhering to it. This allows for control of the output heat, ensuring that the generated heat can thoroughly clean the grease on the oil filter. In this way, different heating commands can be executed according to different oil filter areas, improving the accuracy of the output heat and thus enhancing the cleaning effect of the range hood.

[0060] Here, the heating device can be an electric heating device, including resistance heating devices, electromagnetic induction heating devices, electric arc heating devices, infrared heating devices, etc. It can also utilize a heat exchanger within a refrigeration system for heating. In this solution, the heating device is an electromagnetic induction heating device.

[0061] Below, in conjunction with Figure 3-5 The structural diagram of the tobacco machine, for Figure 6 The control method for self-cleaning of the range hood is explained below.

[0062] like Figure 3 , 4 As shown in Figure 5, the range hood provided in this embodiment includes a main body 1 with a smoke inlet 10, an oil filter 2, a baffle 3, and an electromagnetic coil 4. The oil filter 2 is disposed inside the main body 1. The baffle 3 is disposed at the smoke inlet 10 and located outside the main body 1, and can open or close the smoke inlet 10. The electromagnetic coil 4 is disposed on the baffle 3. When the baffle 3 closes the smoke inlet 10, the electromagnetic coil 4 is energized and generates magnetic lines of force, causing the oil filter 2 to cut the magnetic lines of force and generate heat to melt the oil.

[0063] In the disclosed embodiment, the electromagnetic coil 4 and the metal oil mesh 2 work together under the principle of electromagnetic induction heating, so that when the electromagnetic coil 4 is energized, the metal oil mesh 2 can generate heat to melt the oil stains attached to it.

[0064] The oil filter 2 is located inside the main body 1 and at the smoke inlet 10 to filter the oil fumes entering the range hood. A baffle 3 is installed at the smoke inlet 10, and the baffle 3 is located outside the main body 1. Thus, when the baffle 3 covers the smoke inlet 10, the smoke inlet 10 is closed; when the range hood is in use, the baffle 3 moves from the smoke inlet 10 to another position, and the smoke inlet 10 is opened. An electromagnetic coil 4 is installed on the baffle 3. Thus, when the baffle 3 closes the smoke inlet 10, the electromagnetic coil 4 is energized to generate magnetic lines of force, thereby generating eddy currents in the oil filter 2 to generate heat, melting the grease or oil stains adhering to the oil filter 2, and completing the cleaning of the oil filter 2 in a short time. Optionally, the electromagnetic coil 4 is located on the side of the baffle 3 facing the interior of the range hood main body 1. In this way, when the baffle 3 closes the smoke inlet 10, the electromagnetic coil 4 is located at the smoke inlet 10, which is closer to the oil mesh 2, resulting in better heating effect and reduced energy waste. Once the grease or oil stains have melted, the electromagnetic coil 4 can be de-energized.

[0065] Optionally, the oil mesh 2 is a dense oil mesh with a thickness ranging from 1mm to 30mm. This allows the oil mesh 2 to convert electrical energy into heat energy more efficiently, reducing heating time and energy loss.

[0066] Optionally, the electromagnetic coils 4 are arranged in a ring.

[0067] Optionally, multiple electromagnetic coils 4 are provided on the baffle 3, and any two adjacent electromagnetic coils 4 are electrically connected in series. This generates a larger magnetic field, improving the heating effect of the oil filter 2 and enhancing the cleaning effect.

[0068] Optionally, the distance between the multiple electromagnetic coils 4 is equal and less than or equal to the maximum distance that each electromagnetic coil 4 can be set to. In this way, the electromagnetic coils 4 can be made as non-interfering as possible, and the electromagnetic coils 4 and the oil mesh 2 can be utilized to the maximum extent.

[0069] Optionally, at the connection between the oil mesh 2 and the main body 1, the four edges of the oil mesh 2 are wrapped with heat-insulating material, or with a non-thermal-conducting and high-temperature-resistant material. This prevents the oil mesh 2 from overheating and damaging the material of the main body 1.

[0070] Thus, when the baffle is open and the smoke inlet is open, the range hood is in operation; when the baffle is closed and the smoke inlet is closed, the electromagnetic coil can generate a magnetic field to heat the oil filter to a high temperature in a short time. In this way, after using the range hood, the heat generated by the oil filter can melt the grease or oil stains that adhered to the oil filter during the oil filtration process in time. The melted grease or oil stains fall off, preventing them from adhering to or even accumulating on the oil filter for a long time, so that the oil filter is cleaned more thoroughly and effectively.

[0071] In some embodiments, when the baffle 3 closes the smoke inlet 10, the plane where the electromagnetic coil 4 is located is parallel to the plane where the oil mesh 2 is located.

[0072] In this way, when the baffle 3 closes the smoke inlet 10, the magnetic lines of force generated by the electromagnetic coil 4 are evenly distributed on the plane where the oil mesh 2 is located, preventing uneven heat generation on the oil mesh 2 from affecting the cleaning efficiency and the cleaning effect of the oil mesh 2.

[0073] Optionally, the distance between the plane containing the electromagnetic coil 4 and the plane containing the oil filter 2 ranges from 2mm to 20mm. This avoids direct contact between the electromagnetic coil 4 and the oil filter 2, and prevents the oil filter from overheating and affecting heat-sensitive parts on the range hood body 1 if the distance is too small; simultaneously, it avoids the distance being too large, which could affect heat generation. Optionally, the distance between the plane containing the electromagnetic coil 4 and the plane containing the oil filter 2 can be 2mm, 4mm, 5mm, 10mm, 14mm, 17mm, or 20mm.

[0074] Optionally, the oil filter 2 can be made of steel or aluminum alloy. Alternatively, the material of the oil filter 2 can be selected to provide strong feedback to the eddy current response in electromagnetic induction. This increases the heat generation of the oil filter 2 and improves its cleaning efficiency.

[0075] Optionally, the range hood also includes a rotating shaft 11. The rotating shaft 11 connects the main body 1 and the baffle 3. In this way, the baffle 3 is rotatably connected to the main body 1 through the rotating shaft 11, allowing the baffle 3 to rotate freely relative to the main body 1, thereby opening or closing the smoke inlet 10.

[0076] Combination Figure 5 As shown, in some embodiments, the range hood also includes a draft fan 5. The draft fan 5 is disposed inside the main body 1 and can blow or draw air towards the oil filter 2. In this way, the grease or oil stains on the oil filter 2, which melt into oil droplets due to heating, are accelerated off the surface of the oil filter 2 and fall downwards under the airflow generated by the draft fan 5 when the draft fan 5 blows or draws air towards the oil filter 2, further improving the cleaning effect of the oil filter 2.

[0077] Optionally, the ducting fan 5 is located at the lower edge of the oil mesh 2, or at the bottom inside the main body 1. In this way, under the suction action of the ducting fan 5, the liquid oil droplets accelerate and fall downwards.

[0078] Optionally, the drainage fan 5 is positioned at the upper edge of the oil mesh 2. In this way, the air blown by the drainage fan 5 can blow downwards along the oil mesh 2, causing the liquid oil droplets to move downwards at an accelerated speed along the oil mesh 2, and preventing the liquid oil droplets from falling onto the drainage fan 5 and becoming difficult to clean in time.

[0079] Optionally, an oil collection device is provided below the oil mesh 2 to collect liquid oil droplets that fall onto the oil mesh 2.

[0080] In some embodiments, the range hood further includes a dust cover 40. The dust cover 40 covers the electromagnetic coil 4; or, the electromagnetic coil 4 is disposed on the dust cover 40, and the dust cover 40 is disposed on the baffle 3.

[0081] Optionally, a dust cover 40 can be used to cover the electromagnetic coil 4. This protects the electromagnetic coil 4 from being contaminated by cooking fumes, grease, or oil stains when the range hood is running, thus preventing it from affecting its working efficiency.

[0082] Optionally, the dust cover 40 and the baffle 3 are connected by bolts, hinges, or clips. This allows the dust cover 40 to be easily opened for inspection, repair, or replacement of the electromagnetic coil 4; in addition, it also facilitates the disassembly and assembly of the dust cover 40, making it easy to repair and replace itself.

[0083] Optionally, the electromagnetic coil 4 is mounted on the dust cover 40, which in turn is mounted on the baffle 3. In this way, when there are multiple electromagnetic coils 4, mounting them on the dust cover 40 as a single unit facilitates the overall installation, disassembly, and maintenance of the electromagnetic coils 4.

[0084] Optionally, the dust cover 40 is made of a material that does not affect the generation of magnetic lines of force by the electromagnetic coil 4, and does not impede the passage of magnetic lines of force. This prevents the heating effect of the oil mesh 2 from being affected and reduced.

[0085] In some embodiments, the range hood further includes a control device 6. The control device 6 is electrically connected to the electromagnetic coil 4 and is used to control the electromagnetic coil 4 to generate magnetic lines of force.

[0086] With the baffle 3 closing the smoke inlet 10, the control device 6 controls the electromagnetic coil 4 to be energized and generate magnetic lines of force, causing the oil filter 2 to cut the magnetic lines of force and generate heat to melt the oil. Optionally, the control device 6 can control the electromagnetic coil 4 to be energized according to user commands. This allows the oil filter 2 to be cleaned at any time according to the user's wishes. Optionally, the control device 6 controls the electromagnetic coil 4 according to preset commands of the range hood. When the preset command is triggered, the electromagnetic coil 4 is energized. In this way, the user does not need to manually clean the oil filter 2 every time. The preset commands can be set to when the baffle 3 closes the smoke inlet 10 after each use, when the number of times the range hood is used reaches a preset condition, when the duration of each use of the range hood reaches a preset condition, when the weekly usage interval of the range hood reaches a preset condition, etc.

[0087] Optionally, the range hood also includes a pressure sensor 7. The pressure sensor 7 is disposed on the main body 1 and electrically connected to the control device 6, and is used to transmit the detected pressure signal of the baffle 3 to the control device 6.

[0088] During the use of the range hood, the electromagnetic coil 4 cannot be energized. A pressure sensor 7 is installed on the main body 1, positioned at the edge of the smoke inlet 10. Thus, when the baffle 3 closes the smoke inlet 10, the control device 6 will only energize the electromagnetic coil 4 after the pressure sensor 7 detects a pressure signal, causing the oil filter 2 to generate heat to melt grease or oil stains. The placement of the pressure sensor 7 ensures the safety of the range hood's heating; the electromagnetic coil 4 can only be energized when the baffle 3 covers and completely closes the smoke inlet 10.

[0089] Optionally, when the pressure signal detected by the pressure sensor 7 is greater than a preset pressure value, the control device 6 can confirm that the electromagnetic coil 4 is energized. This further ensures the safety of the range hood heating.

[0090] Optionally, multiple pressure sensors 7 are provided and connected in parallel. In this way, even if any one of the pressure sensors 7 fails or malfunctions, the cleaning operation of the range hood on the oil filter 2 will not be affected.

[0091] In some embodiments, the range hood further includes a timer 8. The timer 8 is electrically connected to the control device 6. It starts timing when the electromagnetic coil 4 is energized, and when the timer 8 reaches a set value, the control device 6 controls the electromagnetic coil 4 to stop being energized.

[0092] When the electromagnetic coil 4 is energized, the oil filter 2 cuts the magnetic lines of force, which can generate a large amount of heat in a short time. If the heating time is too long, it will waste energy; if the heating time is too short, the oil filter 2 will not be thoroughly cleaned. Therefore, by setting the timer 8 to control the heating time, the time can be precisely controlled. When the timer 8 reaches the set time value, the control device 6 controls the electromagnetic coil 4 to stop being energized, thereby controlling the cleaning process of the range hood on the oil filter 2.

[0093] Optionally, the timer 8 can be preset at the factory; it can be set by the user; or it can be adjusted by the range hood usage time controlled by the control device 6. This allows for accurate control of the range hood's cleaning process.

[0094] Optionally, the range hood also includes an image acquisition module, corresponding to the oil filter setting, and electrically connected to the control device 6. Before the control device energizes the electromagnetic coil 4, the image acquisition module acquires an image of the oil filter to achieve the acquisition and control of the heating command to be executed by the electromagnetic coil according to the above-mentioned control method for self-cleaning of the range hood.

[0095] Combination Figure 6 As shown in the embodiments of this disclosure, the control method for self-cleaning of a range hood includes:

[0096] Step S11: Perform the cleaning procedure and control the baffle to close the smoke inlet of the range hood. When the pressure sensor detects a pressure signal, it indicates that the baffle has rotated to close the smoke inlet of the range hood. At this time, heating and cleaning of the range hood can improve safety performance.

[0097] Step S12: Obtain the area of ​​the oil mesh to be cleaned using the image acquisition module.

[0098] Step S13: Determine the amount of heat required to heat the oil mesh based on the area of ​​the oil mesh.

[0099] Step S14: Determine the corresponding heating command based on the required heat.

[0100] Step S15: Control the electromagnetic coil to be energized according to the heating command so that the oil screen generates corresponding heat under the action of electromagnetic induction, melting the oil stains.

[0101] Step S16: According to the heating command, the electromagnetic coil is de-energized, and after a set time, the baffle is opened to open the smoke inlet of the range hood. Thus, after the heating command ends, the electromagnetic coil is de-energized, the oil screen stops generating heat, and the melted oil on it continues to flow into the collection device within the set time. After the set time ends, the cleaning of the range hood can be considered complete. At this time, the baffle is opened to open the smoke inlet of the range hood, restoring it to a state where it can be used normally.

[0102] Optionally, after the control electromagnetic wire is energized according to the heating command, the duct fan can also be controlled to blow or draw air into the oil filter, further accelerating the flow of the melted oil in the range hood to the collection device.

[0103] The control method for self-cleaning of range hoods provided in this embodiment, in cleaning mode, after the control baffle closes the range hood's smoke inlet, heat is generated by energizing the electromagnetic coil to melt the grease adhering to the grease. The method executes heating commands corresponding to the grease area, controlling the output heat to ensure thorough cleaning of the grease on the grease. Thus, different heating commands can be executed according to different grease areas, improving the accuracy of heat output and thereby enhancing the cleaning effect of the range hood.

[0104] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the aforementioned control method for self-cleaning of a range hood.

[0105] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the aforementioned control method for self-cleaning of a range hood.

[0106] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0107] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0108] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0109] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0110] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0111] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A control method for self-cleaning of a range hood, characterized in that, The range hood includes an oil filter and a heating device corresponding to the oil filter; the method includes: Obtain the area of ​​the oil web; Determine the heating command corresponding to the area of ​​the oil mesh; The heating device is controlled to execute the heating command to melt the oil stains on the oil filter; The acquisition of the oil mesh area includes: acquiring an oil mesh image and determining the area of ​​the oil mesh to be cleaned as the oil mesh area required for cleaning.

2. The control method according to claim 1, characterized in that, Determining the cleaning instruction corresponding to the area of ​​the oil mesh includes: The amount of heat required to heat the oil mesh is determined based on its area. The corresponding heating command is determined based on the required heat.

3. The control method according to claim 2, characterized in that, The area of ​​the oil mesh is proportional to the amount of heat required to heat the oil mesh.

4. The control method according to claim 2, characterized in that, The heat required to heat the oil mesh is determined as follows: Q = k × S × (T1 - T2) Where Q is the heat required to heat the oil mesh, S is the area of ​​the oil mesh, T1 is the cleaning temperature, T2 is the indoor ambient temperature, and k is the weighting coefficient.

5. The control method according to claim 4, characterized in that, The value of the weighting coefficient k is proportional to the size of the perforated mesh of the oil screen.

6. The control method according to claim 4, characterized in that, The value of the weighting coefficient k is proportional to the thickness of the oil mesh.

7. The control method according to claim 2, characterized in that, The corresponding heating instruction is determined based on the required heat, including: determining the heating power, or heating time, or heating power and heating time based on the required heat.

8. A control device for self-cleaning a range hood, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute, when executing the program instructions, the control method for self-cleaning of a range hood as described in any one of claims 1 to 7.

9. A range hood, characterized in that, include: Oil mesh, A heating device is provided corresponding to the oil mesh; and The control device for self-cleaning of a range hood as described in claim 8.

10. The range hood according to claim 9, characterized in that, The heating device includes an electromagnetic induction heating device.

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