Oil fume filtering method and device, range hood and readable storage medium

Abstract

Embodiments of the present application provide an oil fume filtering method, device, range hood and readable storage medium, and relate to the field of kitchen control. The method comprises the following steps: obtaining an oil fume concentration value at the outlet of a fan; comparing the oil fume concentration value with a critical concentration threshold; adjusting the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold; and adjusting the parameters of a filtering device when the oil fume concentration value is greater than the critical concentration threshold, thereby improving the oil fume filtering effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the kitchen control field, in particular to an oil fume filtering method and device, an oil fume extractor and a readable storage medium. BACKGROUND

[0002] The current market oil fume extractor separates oil fume by using the oil screen in the smoke collection cavity and the oil screen at the fan air inlet as the main means. After the oil fume extractor is used for a period of time, a large amount of oil droplets and particulate matter are deposited in the oil fume extractor and the fan to form oil stains, which greatly affects the fan air volume and makes the smoke suction effect poor. SUMMARY

[0003] The present application aims to provide an oil fume filtering method, device, oil fume extractor and readable storage medium, which can improve the oil fume filtering effect.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the embodiments of the present application is as follows:

[0005] In a first aspect, the embodiments of the present application provide an oil fume filtering method applied to a controller of an oil fume extractor, the oil fume extractor further comprising a filtering device and a fan, the controller being in communication connection with the filtering device and the fan, and the method comprising:

[0006] obtaining an oil fume concentration value at the outlet of the fan;

[0007] comparing the oil fume concentration value with a critical concentration threshold value;

[0008] adjusting the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value;

[0009] adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold value.

[0010] In an optional embodiment, the step of adjusting the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value comprises:

[0011] determining the current rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value;

[0012] comparing the oil fume concentration value with a safe oil fume concentration threshold value, wherein the safe oil fume concentration threshold value is less than the critical concentration threshold value;

[0013] obtaining a target rotating speed from a plurality of preset rotating speeds when the oil fume concentration value is greater than the safe oil fume concentration threshold value, wherein the target rotating speed is the first rotating speed greater than the current rotating speed;

[0014] controlling the fan to operate at the target rotating speed.

[0015] In an optional embodiment, the filtering device comprises a circulating water pump, a water outlet plate provided with a plurality of arrayed water outlets, and a water tank provided with a plurality of arrayed nozzles corresponding to the water outlets, and the step of adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold comprises:

[0016] When the oil fume concentration value is greater than the critical concentration threshold, the circulating water pump is controlled to operate at a first power to control the cross-sectional area of the water column sprayed by the nozzles.

[0017] In an optional embodiment, the method further comprises:

[0018] obtaining a first oil fume concentration value at the outlet of the fan when the circulating water pump operates at the first power;

[0019] in response to the first oil fume concentration value being greater than the critical concentration threshold, controlling the circulating water pump to adjust from the first power to a second power, wherein the first power is less than the second power.

[0020] In an optional embodiment, the filtering device further comprises a telescopic motor, and the water tank and the water outlet plate are connected through the telescopic motor, and the method further comprises:

[0021] obtaining a second oil fume concentration value at the outlet of the fan when the circulating water pump operates at the second power;

[0022] in response to the second oil fume concentration value being greater than the critical concentration threshold, controlling the telescopic motor to operate to control the distance between the nozzles and the corresponding water outlets.

[0023] In an optional embodiment, in response to the second oil fume concentration value being greater than the critical concentration threshold, the step of controlling the telescopic motor to operate to control the distance between the nozzles and the corresponding water outlets comprises:

[0024] in response to the second oil fume concentration value being greater than the critical concentration threshold, controlling the telescopic motor to operate to control the distance between the nozzles and the corresponding water outlets to be a first distance.

[0025] In an optional embodiment, the method further comprises:

[0026] obtaining a third oil fume concentration value at the outlet of the fan when the distance between the nozzles and the corresponding water outlets is the first distance;

[0027] in response to the third oil fume concentration value being greater than the critical concentration threshold, controlling the telescopic motor to operate to control the distance between the nozzles and the corresponding water outlets to be a second distance, wherein the second distance is less than the first distance.

[0028] In a second aspect, an embodiment of the present application provides an oil fume filtering device applied to a controller of an oil fume extractor, the oil fume extractor further comprising a filtering device and a fan, the controller being in communication connection with the filtering device and the fan, and the device comprising:

[0029] The acquisition module is configured to acquire the oil fume concentration value at the outlet of the fan.

[0030] The comparison module is configured to compare the oil fume concentration value with a critical concentration threshold.

[0031] The first adjustment module is configured to adjust the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold.

[0032] The second adjustment module is configured to adjust the parameter of the filtering device when the oil fume concentration value is greater than the critical concentration threshold.

[0033] In a third aspect, an embodiment of the present application provides an oil fume extractor, which comprises a controller, a filtering device and a fan, the controller being in communication connection with the filtering device and the fan, and the controller being configured to: acquire an oil fume concentration value at the outlet of the fan; compare the oil fume concentration value with a critical concentration threshold; adjust the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold; and adjust the parameter of the filtering device when the oil fume concentration value is greater than the critical concentration threshold.

[0034] In a fourth aspect, an embodiment of the present application provides a readable storage medium, which has a computer program stored thereon, the computer program being configured to implement the steps of the oil fume filtering method when executed by a controller.

[0035] The present application has the following beneficial effects:

[0036] The present application acquires the oil fume concentration value at the outlet of the fan, compares the oil fume concentration value with a critical concentration threshold, adjusts the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold, and adjusts the parameter of the filtering device when the oil fume concentration value is greater than the critical concentration threshold, thereby improving the oil fume filtering effect. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 The structural schematic diagram of the oil fume extractor provided by the embodiment of the present application;

[0039] Figure 2 The flowchart of one of the oil fume filtering methods provided by the embodiment of the present application;

[0040] Figure 3A structural schematic diagram of an extractor hood provided by an embodiment of the present application is provided.

[0041] Figure 4 A flowchart of a second oil fume filtering method provided by an embodiment of the present application is provided.

[0042] Figure 5 A flowchart of a third oil fume filtering method provided by an embodiment of the present application is provided.

[0043] Figure 6 A structural schematic diagram of a filtering device provided by an embodiment of the present application is provided.

[0044] Figure 7 A partial schematic diagram of a water tank provided by an embodiment of the present application is provided.

[0045] Figure 8 A flowchart of a fourth oil fume filtering method provided by an embodiment of the present application is provided.

[0046] Figure 9 A flowchart of a fifth oil fume filtering method provided by an embodiment of the present application is provided.

[0047] Figure 10 A structural block diagram of an oil fume filtering device provided by an embodiment of the present application is provided.

[0048] Icon: 100-Extractor hood; 110-Oil fume filtering device; 120-Memory; 130-Controller; 1-Filtering device; 2-Fan; 11-Circulating water pump; 12-Sponge; 13-Circulating water path; 14-Water outlet plate; 15-Water tank; 151-Sprinkler; 111-Obtaining module; 112-Comparing module; 113-First adjusting module; 114-Second adjusting module. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0051] It should be noted that like reference numerals and letters refer to like items throughout the accompanying drawings, and once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In addition, the terms "first", "second", and the like appear only to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] The embodiment provides a range hood which can filter oil fume. In a possible implementation manner, the range hood can be, but is not limited to, an integrated cooker, a side suction type range hood, a top suction type range hood, a lower exhaust type range hood, and the like.

[0056] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of the range hood 100 provided by the embodiment of the present application. The range hood 100 can further include more or fewer components than those shown in Figure 1 , or have a different configuration from that shown in Figure 1 . Figure 1 Each component shown in may be realized by hardware, software or a combination thereof.

[0057] The range hood 100 includes an oil fume filtering device 110, a storage 120 and a controller 130.

[0058] The components of the memory 120 and controller 130 are electrically connected directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The fume filtration device 110 includes at least one software function module that can be stored in the memory 120 or embedded in the operating system (OS) of the fume hood 100 in the form of software or firmware. The controller 130 is used to execute executable modules stored in the memory 120, such as the software function modules and computer programs included in the fume filtration device 110.

[0059] The memory 120 may be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory 120 is used to store programs, and the controller 130 executes the programs after receiving execution instructions.

[0060] Please refer to Figure 2 , Figure 2 For application Figure 1 The flowchart below shows a method for filtering oil fumes in a range hood 100. The method includes a detailed explanation of each step.

[0061] S201: Obtain the oil fume concentration value at the fan outlet.

[0062] S202: Compare the oil fume concentration value with the critical concentration threshold.

[0063] S203: Adjust the fan speed when the oil fume concentration is less than or equal to the critical concentration threshold.

[0064] S204: When the oil fume concentration exceeds the critical concentration threshold, adjust the parameters of the filter device.

[0065] like Figure 3 The diagram shown is a structural schematic of a range hood 100, which includes a filter device 1 and a fan 2. The controller 130 of the range hood 100 is communicatively connected to the filter device 1 and the fan 2. Figure 3 The middle arrow indicates the filtration direction of the range hood 100.

[0066] The oil fume detection device can be arranged at the outlet position of the fan 2, and the oil fume detection device detects the oil fume concentration value at the outlet of the fan 2 and sends the detected oil fume concentration value to the controller 130 of the range hood 100. The controller 130 of the range hood 100 receives the oil fume concentration value at the outlet of the fan 2 detected by the oil fume detection device, thereby obtaining the oil fume concentration value at the outlet of the fan 2.

[0067] The detected oil fume concentration value is compared with the critical concentration threshold value. When the oil fume concentration value is greater than the critical concentration threshold value, the parameters of the filtering device 1 are adjusted to improve the filtering effect of the oil fume. When the oil fume concentration value is less than or equal to the critical concentration threshold value, the speed of the fan 2 can be adjusted to achieve the effect of filtering the oil fume.

[0068] The critical concentration threshold value can be set by the user, or the critical concentration threshold value can be determined based on the historical use of the range hood.

[0069] When obtaining the oil fume concentration value at the outlet of the fan 2, the oil fume concentration value at the outlet of the fan 2 can be obtained in real time, and the oil fume concentration value at the outlet of the fan 2 is compared with the critical concentration threshold value in real time, thereby adjusting the speed of the fan 2 or the parameters of the filtering device 1 in real time.

[0070] When obtaining the oil fume concentration value at the outlet of the fan 2, the oil fume concentration value at the outlet of the fan 2 can be obtained in real time, and the oil fume concentration value at the outlet of the fan 2 can be obtained in real time, and the oil fume concentration value at the outlet of the fan 2 is compared with the critical concentration threshold value in real time, thereby adjusting the speed of the fan 2 or the parameters of the filtering device 1 in real time.

[0071] It should be noted that the preset period can be set to 1 min, 2 min, 3 min, etc., and the present embodiment does not make specific limitations.

[0072] When the oil fume concentration value is less than or equal to the critical concentration threshold value, there are various implementation manners for adjusting the speed of the fan. In one implementation manner, as shown in Figure 4 The method comprises the following steps:

[0073] S203-1: When the oil fume concentration value is less than or equal to the critical concentration threshold value, the current speed of the fan is determined.

[0074] S203-2: The oil fume concentration value is compared with the safe oil fume concentration threshold value.

[0075] The safe oil fume concentration threshold value is less than the critical concentration threshold value.

[0076] S203-3: obtaining a target rotating speed from a plurality of preset rotating speeds when the oil fume concentration value is greater than the safe oil fume concentration threshold value.

[0077] wherein the target rotating speed is a first rotating speed greater than the current rotating speed.

[0078] S203-4: controlling the fan to operate at the target rotating speed.

[0079] When the oil fume concentration value at the outlet of the fan 2 is less than or equal to the critical concentration threshold value, the rotating speed of the fan 2 can be adjusted based on the current operating state of the fan 2.

[0080] In an example, when the fan 2 is in the non-operating state and the oil fume concentration value detected at the outlet of the fan 2 is less than or equal to the critical concentration threshold value, the fan 2 is started and operates at a first rotating speed. When the fan 2 operates at the first rotating speed, the oil fume concentration value at the outlet of the fan 2 is obtained again. When the oil fume concentration value at the outlet of the fan 2 is still less than or equal to the critical concentration threshold value, the oil fume concentration value at the outlet of the fan 2 is compared with the safe oil fume concentration threshold value. When the oil fume concentration value is greater than the safe oil fume concentration threshold value, a first preset rotating speed greater than the first rotating speed can be obtained from the plurality of preset rotating speeds as the target rotating speed. For example, when the plurality of preset rotating speeds include the first rotating speed, a second rotating speed greater than the first rotating speed, and a third rotating speed greater than the second rotating speed, the second rotating speed greater than the first rotating speed can be obtained from the plurality of preset rotating speeds as the target rotating speed, and the fan 2 is controlled to operate at the second rotating speed.

[0081] When the fan 2 operates at the second rotating speed, the oil fume concentration value at the outlet of the fan 2 is obtained again. When the oil fume concentration value at the outlet of the fan 2 is still less than or equal to the critical concentration threshold value, the oil fume concentration value is compared with the safe oil fume concentration threshold value. When the oil fume concentration value is greater than the safe oil fume concentration threshold value, a third rotating speed greater than the second rotating speed can be obtained from the plurality of preset rotating speeds as the target rotating speed, and the fan 2 is controlled to operate at the third rotating speed.

[0082] It should be noted that the safe oil fume concentration threshold value is less than the critical concentration threshold value.

[0083] When the oil fume concentration value at the outlet of the fan 2 is less than or equal to the safe oil fume concentration threshold value, the oil fume filtering is not required, i.e., the rotating speed of the fan 2 does not need to be adjusted and the parameters of the filtering device 1 do not need to be adjusted.

[0084] In another example, when the oil fume concentration value at the outlet of the fan 2 is less than or equal to the critical concentration threshold value, the current rotating speed of the fan 2 is determined, the oil fume concentration value is compared with the safe oil fume concentration threshold value, when the oil fume concentration value is greater than the safe oil fume concentration threshold value, the target rotating speed is obtained from the plurality of preset rotating speeds, and the fan 2 is controlled to operate at the target rotating speed.

[0085] For example, when the oil fume concentration value at the outlet of the fan 2 is less than or equal to the critical concentration threshold value, the current rotating speed of the fan 2 is determined as the first rotating speed, the oil fume concentration value is compared with the safe oil fume concentration threshold value, when the oil fume concentration value is greater than the safe oil fume concentration threshold value, the second rotating speed greater than the first rotating speed is obtained from the plurality of preset rotating speeds as the target rotating speed, and the fan 2 is controlled to operate at the target rotating speed.

[0086] When the oil fume concentration value is greater than the critical concentration threshold value, there are various implementation manners for adjusting the parameters of the filtering device, in one implementation manner, as shown in Figure 5 , the method comprises the following steps:

[0087] S204-1: Obtain the oil fume concentration value at the outlet of the fan.

[0088] S204-2: Compare the oil fume concentration value with the critical concentration threshold value.

[0089] S204-3: When the oil fume concentration value is greater than the critical concentration threshold value, control the circulating water pump to operate at the first power to control the cross-sectional area of the water column ejected by the nozzle.

[0090] Referring to Figure 6 , the filtering device 1 comprises the circulating water pump 11. The filtering device 1 further comprises the sponge 12 and the circulating water path 13. The filtering device 1 further comprises the water outlet plate 14 and the water tank 15. The water outlet plate 14 is provided with a plurality of arrayed water outlets, as shown in Figure 7 , which is a partial schematic view of the water tank 15. The water tank 15 is provided with a plurality of arrayed nozzles 151 corresponding to the water outlets. The circulating water pump 11 is used to control the flow rate of the water in the circulating water path 13. After the sponge 12 is wetted by the nozzles 151 arranged on the water tank 15, the oil fume is adsorbed into the sponge 12. The water in the sponge 12 flows into the circulating water path 13. By controlling the power of the circulating water pump 11, the cross-sectional area of the water column ejected by the nozzles 151 can be changed. The greater the power of the circulating water pump 11, the greater the cross-sectional area of the water column ejected by the nozzles 151. The greater the cross-sectional area of the water column, the greater the oil fume filtering area, and the better the oil fume filtering effect.

[0091] When the oil fume concentration value at the outlet of the fan 2 is detected to be greater than the critical concentration threshold, the circulating water pump 11 of the filtering device 1 is controlled to operate at a first power. When the circulating water pump 11 operates at the first power, the flow rate of the water flow in the circulating water channel 13 is a first flow rate. At this time, the area of the water column sprayed by the spray head 151 is controlled to be a first area.

[0092] In another example, when the oil fume concentration value at the outlet of the fan 2 is greater than the critical concentration threshold, the difference between the oil fume concentration value at the outlet of the fan 2 and the critical concentration threshold is calculated. Based on the difference, a corresponding target preset difference value range is determined from a plurality of preset difference value ranges. The power corresponding to the target preset difference value range is determined. The power of the current circulating water pump 11 is compensated based on the power.

[0093] It should be noted that different preset difference value ranges correspond to different powers.

[0094] In another implementation of adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold, as shown in Figure 8 The method comprises the following steps:

[0095] S301: Obtain a first oil fume concentration value at the outlet of the fan when the circulating water pump operates at a first power.

[0096] S302: In response to the first oil fume concentration value being greater than the critical concentration threshold, control the circulating water pump to adjust from the first power to a second power.

[0097] The first power is less than the second power.

[0098] When the circulating water pump 11 operates at the first power, the first oil fume concentration value at the outlet of the fan 2 is obtained. The first oil fume concentration value is compared with the critical concentration threshold. When the first oil fume concentration value is greater than the critical concentration threshold, it indicates that the oil fume concentration value at the outlet of the fan 2 has not decreased when the current circulating water pump 11 operates at the first power. Therefore, further filtering of the oil fume is required. That is, the circulating water pump 11 is controlled to adjust from the first power to the second power, so as to adjust the flow rate of the water flow in the circulating water channel 13 to a second flow rate. The second flow rate is greater than the first flow rate. At this time, the cross-sectional area of the water column sprayed by the spray head 151 is controlled to be a second area. The second area is greater than the first area. Therefore, the filtering area of the oil fume can be increased.

[0099] Since the power of the circulating water pump 11 is adjusted from the first power to the second power, the water flow rate in the circulating water path 13 is adjusted from the first flow rate to the second flow rate, and the cross-sectional area of the water column sprayed by the nozzle 151 changes from the first area to the second area. Since the sponge 12 can absorb the oil fume on the sea surface after being wet, when the water flow rate in the circulating water path 13 is increased from the first flow rate to the second flow rate, the cross-sectional area of the water column is increased, thereby improving the filtering effect of the sponge 12 on the oil fume.

[0100] When the power of the circulating water pump 11 is provided with multiple powers, when the oil fume concentration value is greater than the critical concentration threshold, the circulating water pump 11 is controlled to operate at the first power, and the oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 operates at the first power is obtained. In response to the oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 operates at the first power being greater than the critical concentration threshold, the circulating water pump 11 is controlled to be adjusted from the first power to the second power, wherein the first power is less than the second power. Then, the oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 operates at the second power is obtained. In response to the oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 operates at the second power being greater than the critical concentration threshold, the circulating water pump 11 is controlled to be adjusted from the second power to the third power, wherein the second power is less than the third power, until the power of the circulating water pump 11 reaches the maximum power. If the obtained oil fume concentration value at the outlet of the fan 2 still does not satisfy the condition of being less than or equal to the critical concentration threshold, further filtering of the oil fume by controlling other components of the filtering device 1 is performed.

[0101] When the circulating water pump 11 operates at the first power, the first oil fume concentration value at the outlet of the fan 2 is obtained, and the first oil fume concentration value is compared with the critical concentration threshold. When the first oil fume concentration threshold is less than or equal to the critical concentration threshold, the execution logic of the adjustment of the rotating speed of the fan 2 is returned.

[0102] That is, when the first oil fume concentration threshold is less than or equal to the critical concentration threshold, the current rotating speed of the fan 2 is determined, the oil fume concentration value is compared with the safe oil fume concentration threshold, when the oil fume concentration value is greater than the safe oil fume concentration threshold, the target rotating speed is obtained from the multiple preset rotating speeds, the fan 2 is controlled to operate at the target rotating speed, and the circulating water pump 11 is controlled to operate at the first power.

[0103] In another example, when the circulating water pump 11 operates at the first power, the first oil fume concentration value at the outlet of the fan 2 is obtained, and the first oil fume concentration value is compared with the critical concentration threshold. When the first oil fume concentration threshold is less than or equal to the critical concentration threshold, the fan 2 is controlled to operate at the first rotating speed, and the circulating water pump 11 is controlled to operate at the first power.

[0104] In another implementation of adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold, as shown in Figure 9 includes the following steps:

[0105] S401: Obtain a second oil fume concentration value at the outlet of the fan when the circulating water pump is running at the second power.

[0106] S402: In response to the second oil fume concentration value being greater than the critical concentration threshold, control the telescopic motor to operate to control the distance between the nozzle and the corresponding water outlet.

[0107] When the circulating water pump 11 is running at the second power, the second oil fume concentration value at the outlet of the fan 2 is obtained, and the second oil fume concentration value is compared with the critical concentration threshold. When the second oil fume concentration value is greater than the critical concentration threshold, it indicates that after the circulating water pump 11 is running at the maximum power, the oil fume concentration at the outlet of the fan 2 cannot be reduced, and therefore, further control of other components of the filtering device 1 is needed to further filter the oil fume.

[0108] That is, when the second oil fume concentration value is greater than the critical concentration threshold, the telescopic motor is controlled to operate to control the distance between the water outlet of the water outlet plate 14 and the corresponding nozzle 151 on the water tank 15.

[0109] The several nozzles 151 emit a three-dimensional dot matrix type high-pressure jet water column, and through the liquid absorption principle, the oil fume is fully contacted and absorbed by the water column. Under the condition that the flow rate of the water flow in the circulating water path 13 is unchanged, the greater the distance between the water outlet of the water outlet plate 14 and the corresponding nozzle 151 on the water tank 15, the smaller the cross-sectional area of the emitted water column, that is, the thinner the water column, and the smaller the distance between the water outlet of the water outlet plate 14 and the corresponding nozzle 151 on the water tank 15, the greater the cross-sectional area of the emitted water column, that is, the thicker the water column. When the cross-sectional area of the emitted water column is greater, the efficiency of the liquid absorbing the oil fume is higher, the water column is shot onto the sponge 12 on the opposite side, is absorbed by the sponge 12, the sponge 12 releases the liquid after being saturated, and the liquid is circulated by the circulating water pump 11 and is used.

[0110] In an example, when the circulating water pump 11 is running at the maximum power, that is, the second power is the maximum power, the second oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 is running at the second power is obtained. When the second oil fume concentration value is greater than the critical concentration threshold, the telescopic motor is controlled to operate to control the distance between the nozzle 151 and the corresponding water outlet to be a first distance. When the distance between the nozzle 151 and the corresponding water outlet is the first distance, a third oil fume concentration value at the outlet of the fan 2 is obtained, and in response to the third oil fume concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate to control the distance between the nozzle 151 and the corresponding water outlet to be a second distance, wherein the second distance is less than the first distance.

[0111] When the spray head 151 comprises a top rod, a second oil fume concentration value at the outlet of the fan 2 when the circulating water pump 11 is running at the second power is obtained, and when the second oil fume concentration value is greater than the critical concentration threshold, the telescopic motor is controlled to run to control the distance between the corresponding top rod of the spray head 151 and the corresponding water outlet to be the first distance. A third oil fume concentration value at the outlet of the fan 2 when the distance between the corresponding top rod of the spray head 151 and the corresponding water outlet is the first distance is obtained, and in response to the third oil fume concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to run to control the distance between the corresponding top rod of the spray head 151 and the corresponding water outlet to be the second distance, wherein the second distance is less than the first distance.

[0112] Please refer to Figure 10 The embodiment of the present application also provides a kind of applied to Figure 1 The oil fume filtering device 110 of range hood 100, oil fume filtering device 110 includes:

[0113] Obtaining module 111, for obtaining the oil fume concentration value at the outlet of fan;

[0114] Comparison module 112, for comparing oil fume concentration value with critical concentration threshold;

[0115] First adjustment module 113, for when oil fume concentration value is less than or equal to critical concentration threshold, the speed of fan is adjusted;

[0116] Second adjustment module 114, for when oil fume concentration value is greater than critical concentration threshold, the parameter of filtering device is adjusted.

[0117] The present application also provides a kind of range hood 100, range hood 100 includes controller 130 and memory 120.There is computer executable instruction in memory 120, when computer executable instruction is executed by controller 130, the oil fume filtering method is realized.

[0118] The embodiment of the present application also provides a kind of computer readable storage medium, and storage medium stores computer program, when computer program is executed by controller 130, the oil fume filtering method is realized.

[0119] In the embodiments of the present application, it should be understood that the disclosed apparatus and method can also be implemented in other manners. The embodiments described above are merely exemplary. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architectures, functions and operation of the apparatus, method and computer program product according to the embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logic function. It should also be noted that, in some alternative implementations, the functions noted in the blocks can occur in a different order from that noted in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0120] In addition, the various functional modules in the embodiments of the present application can be integrated together or exist separately, or two or more modules can be integrated to form an independent part. When the functions are realized in the form of software functional modules and sold or used as an independent product, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application, in essence or the part that contributes to the prior art, or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0121] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0122] The above description is only various embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An oil fume filtering method, characterized by, A controller applied to an oil fume exhauster, the oil fume exhauster further comprising a filtering device and a fan, the controller being in communication connection with the filtering device and the fan, oil fume being filtered by the filtering device and then being discharged by the fan, the filtering device comprising a circulating water pump, a water outlet plate, a water tank and a circulating water path, the water outlet plate being provided with a plurality of arrayed water outlets, the water tank being provided with a plurality of arrayed nozzles corresponding to the water outlets, the circulating water pump being used for controlling the water flow speed of the circulating water path, the power of the circulating water pump being positively correlated with the water flow speed of the circulating water path, the filtering device further comprising a sponge, the nozzles being provided with nozzle outlets facing the sponge, the sponge being wetted by water from the nozzles and then the water flowing into the circulating water path, the method comprising: obtaining an oil fume concentration value at the outlet of the fan; comparing the oil fume concentration value with a critical concentration threshold value; adjusting the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value; adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold value; the method further comprising: obtaining a first oil fume concentration value at the outlet of the fan when the circulating water pump operates at a first power; in response to the first oil fume concentration value being greater than the critical concentration threshold value, controlling the circulating water pump to adjust from the first power to a second power, wherein the first power is less than the second power.

2. The method of claim 1, wherein, the step of adjusting the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value, comprising: determining the current rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value; comparing the oil fume concentration value with a safe oil fume concentration threshold value, wherein the safe oil fume concentration threshold value is less than the critical concentration threshold value; obtaining a target rotating speed from a plurality of preset rotating speeds when the oil fume concentration value is greater than the safe oil fume concentration threshold value, wherein the target rotating speed is the first rotating speed greater than the current rotating speed; controlling the fan to operate at the target rotating speed.

3. The method of claim 1, wherein, the power of the circulating water pump being positively correlated with the cross-sectional area of the water column shot by the nozzles, the greater the cross-sectional area, the more oil fume is processed, the step of adjusting the parameters of the filtering device when the oil fume concentration value is greater than the critical concentration threshold value, comprising: controlling the circulating water pump to operate at a first power to control the cross-sectional area of the water column shot by the nozzles when the oil fume concentration value is greater than the critical concentration threshold value.

4. The method of claim 1, wherein, the filtering device further comprising a telescopic motor, the water tank and the water outlet plate being connected by the telescopic motor, the method further comprising: obtaining a second oil fume concentration value at the outlet of the fan when the circulating water pump operates at a second power; in response to the second oil fume concentration value being greater than the critical concentration threshold value, controlling the telescopic motor to operate to control the distance between the nozzles and the corresponding water outlets, wherein the greater the distance between the nozzles and the corresponding water outlets, the smaller the cross-sectional area of the water column shot by the nozzles.

5. The method of claim 4, wherein, The step of controlling the telescopic motor to operate to control the distance between the nozzle and the corresponding water outlet in response to the second oil fume concentration value being greater than the critical concentration threshold value comprises: The step of controlling the telescopic motor to operate to control the distance between the nozzle and the corresponding water outlet in response to the second oil fume concentration value being greater than the critical concentration threshold value comprises:

6. The method of claim 5, wherein, The method further comprises: Obtaining a third oil fume concentration value at the fan outlet when the distance between the nozzle and the corresponding water outlet is the first distance; Controlling the telescopic motor to operate to control the distance between the nozzle and the corresponding water outlet to be a second distance in response to the third oil fume concentration value being greater than the critical concentration threshold value, wherein the second distance is less than the first distance.

7. An oil fume filtering device, characterized by, A controller applied to an extractor hood, the extractor hood further comprising a filtering device and a fan, the controller being in communication connection with the filtering device and the fan, oil fume being filtered by the filtering device and then being discharged by the fan, the filtering device comprising a circulating water pump, a water outlet plate, a water tank and a circulating water path, the water outlet plate being provided with a plurality of arrayed water outlets, the water tank being provided with a plurality of arrayed nozzles corresponding to the water outlets, the circulating water pump being used to control the water flow speed of the circulating water path, the power of the circulating water pump being positively correlated with the water flow speed of the circulating water path, the filtering device further comprising a sponge, the nozzle being provided with a nozzle opening facing the sponge, the sponge being wetted by water from the nozzle and then flowing into the circulating water path, the device comprising: An acquisition module configured to acquire an oil fume concentration value at the fan outlet; A comparison module configured to compare the oil fume concentration value with a critical concentration threshold value; A first adjustment module configured to adjust the rotating speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold value; A second adjustment module configured to adjust a parameter of the filtering device when the oil fume concentration value is greater than the critical concentration threshold value; The second adjustment module is further configured to: Obtain a first oil fume concentration value at the fan outlet when the circulating water pump operates at a first power; Control the circulating water pump to be adjusted from the first power to a second power in response to the first oil fume concentration value being greater than the critical concentration threshold value, wherein the first power is less than the second power.

8. A range hood characterized by The oil fume machine comprises a controller, a filtering device and a fan, the controller is in communication connection with the filtering device and the fan, oil fume is filtered by the filtering device and then discharged by the fan, the filtering device comprises a circulating water pump, a water outlet plate, a water tank and a circulating water path, the water outlet plate is provided with a plurality of arrayed water outlets, the water tank is provided with a plurality of arrayed nozzles corresponding to each water outlet; the circulating water pump is used for controlling the water flow speed of the circulating water path, the power of the circulating water pump is positively correlated with the water flow speed of the circulating water path, the filtering device further comprises a sponge, the nozzle is arranged towards the sponge, the sponge is wetted by water on the nozzle and then flows into the circulating water path, the controller is used for: acquiring an oil fume concentration value at the outlet of the fan; comparing the oil fume concentration value with a critical concentration threshold value; when the oil fume concentration value is less than or equal to the critical concentration threshold value, adjusting the rotating speed of the fan; when the oil fume concentration value is greater than the critical concentration threshold value, adjusting the parameters of the filtering device; The controller is further used for: acquiring a first oil fume concentration value at the outlet of the fan when the circulating water pump operates at a first power; In response to the first oil fume concentration value being greater than the critical concentration threshold value, the circulating water pump is controlled to be adjusted from the first power to a second power, wherein the first power is less than the second power.

9. A readable storage medium, having stored thereon a computer program, characterized in that, The computer program is executed by the controller to realize the steps of the method in any one of claims 1-6.

Images