Lampblack filtering method and device, range hood and readable storage medium

Abstract

The embodiment of the invention provides an oil fume filtering method and device, a range hood and a readable storage medium, and relates to the field of kitchen control, the method comprises the following steps: obtaining an oil fume concentration value at an outlet of a fan, comparing the oil fume concentration value with a critical concentration threshold value, and when the oil fume concentration value is less than or equal to the critical concentration threshold value, stopping filtering; and when the oil smoke concentration value is greater than the critical concentration threshold value, the parameters of the filtering device are adjusted, so that the oil smoke filtering effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of kitchen control, and in particular to an oil fume filtering method, an apparatus, an oil fume hood and a readable storage medium. Background Art

[0002] The current method of separating oil fumes in range hoods on the market is mainly through the oil net in the smoke collecting chamber and the oil net at the air inlet of the fan. However, after the range hood has been used for a period of time, a large amount of oil droplets and particles are deposited inside the range hood and on the fan to form grease, which greatly affects the fan air volume and reduces the smoke extraction effect. Summary of the invention

[0003] The object of the present invention is to provide an oil fume filtering method, device, range hood and readable storage medium, which can improve the oil fume filtering effect.

[0004] In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:

[0005] In a first aspect, an embodiment of the present invention provides an oil fume filtering method, which is applied to a controller of an oil fume hood, wherein the oil fume hood further comprises a filtering device and a fan, and the controller is communicatively connected with the filtering device and the fan, and the method comprises:

[0006] Get the oil smoke concentration value at the fan outlet;

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

[0008] When the oil smoke concentration value is less than or equal to the critical concentration threshold, the speed of the fan is adjusted;

[0009] When the oil smoke concentration value is greater than the critical concentration threshold, the parameters of the filtering device are adjusted.

[0010] In an optional implementation manner, when the oil smoke concentration value is less than or equal to the critical concentration threshold, the step of adjusting the speed of the fan includes:

[0011] When the oil smoke concentration value is less than or equal to the critical concentration threshold, determine the current speed of the fan;

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

[0013] When the oil smoke concentration value is greater than the safe oil smoke concentration threshold, a target speed is obtained from a plurality of preset speeds, wherein the target speed is the first speed greater than the current speed;

[0014] Control the fan to run at the target speed.

[0015] In an optional embodiment, the filtering device includes a circulating water pump, a water outlet plate and a water tank, the water outlet plate is provided with a plurality of array-type water outlets, and the water tank is provided with nozzles arranged in an array corresponding to each water outlet. When the oil smoke concentration value is greater than the critical concentration threshold, the step of adjusting the parameters of the filtering device includes:

[0016] When the oil smoke 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 ejected from the nozzle.

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

[0018] Obtaining a first oil smoke concentration value at the fan outlet when the circulating water pump operates at a first power;

[0019] In response to the first oil smoke concentration value being greater than the critical concentration threshold, the circulating water pump is controlled to adjust from a 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 includes a telescopic motor, and the water tank is connected to the water outlet plate via the telescopic motor. The method further includes:

[0021] Obtaining a second oil smoke concentration value at the fan outlet when the circulating water pump operates at a second power;

[0022] In response to the second oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate to control the distance between the nozzle and the corresponding water outlet.

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

[0024] In response to the second oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate so as to control the distance between the nozzle and the corresponding water outlet to be a first distance.

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

[0026] Obtaining a third oil smoke concentration value at the fan outlet when the distance between the nozzle and the corresponding water outlet is a first distance;

[0027] In response to the third oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate to control the distance between the nozzle and the corresponding water outlet to be a second distance, wherein the second distance is smaller than the first distance.

[0028] In a second aspect, an embodiment of the present invention provides an oil fume filtering device, which is applied to a controller of a range hood, wherein the range hood further comprises a filtering device and a fan, wherein the controller is communicatively connected with the filtering device and the fan, and the device comprises:

[0029] An acquisition module is used to obtain the oil smoke concentration value at the fan outlet;

[0030] A comparison module, used for comparing the oil smoke concentration value with a critical concentration threshold;

[0031] The first adjustment module is used to adjust the speed of the fan when the oil smoke concentration value is less than or equal to the critical concentration threshold;

[0032] The second adjustment module is used to adjust the parameters of the filtering device when the oil smoke concentration value is greater than the critical concentration threshold.

[0033] In a third aspect, an embodiment of the present invention provides a range hood, comprising a controller, a filter device and a fan, wherein the controller is communicatively connected with the filter device and the fan, and the controller is used to: obtain the oil fume concentration value at the fan outlet; compare the oil fume concentration value with a critical concentration threshold; adjust the fan speed when the oil fume concentration value is less than or equal to the critical concentration threshold; and adjust the parameters of the filter device when the oil fume concentration value is greater than the critical concentration threshold.

[0034] In a fourth aspect, an embodiment of the present invention provides a readable storage medium having a computer program stored thereon, which implements the steps of the oil fume filtering method when executed by a controller.

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

[0036] The present invention obtains the oil fume concentration value at the fan outlet, compares the oil fume concentration value with a critical concentration threshold, and adjusts the rotation speed of the fan when the oil fume concentration value is less than or equal to the critical concentration threshold; when the oil fume concentration value is greater than the critical concentration threshold, adjusts the parameters of the filtering device to improve the oil fume filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic diagram of the structure of a range hood provided by an embodiment of the present invention;

[0039] Figure 2 One of the flow diagrams of a fume filtering method provided by an embodiment of the present invention;

[0040] Figure 3A schematic diagram of the structure of a range hood provided by an embodiment of the present invention;

[0041] Figure 4 A second flow chart of a fume filtering method provided by an embodiment of the present invention;

[0042] Figure 5 A third flow chart of a fume filtration method provided by an embodiment of the present invention;

[0043] Figure 6 A schematic diagram of the structure of a filtering device provided in an embodiment of the present invention;

[0044] Figure 7 A partial schematic diagram of a water tank provided in an embodiment of the present invention;

[0045] Figure 8 A fourth flow chart of a fume filtration method provided by an embodiment of the present invention;

[0046] Fig. 9 A fifth flow chart of a fume filtering method provided by an embodiment of the present invention;

[0047] Fig.10 This is a structural block diagram of an oil fume filtering device provided in an embodiment of the present invention.

[0048] Icons: 100-range hood; 110-oil fume filtering device; 120-memory; 130-controller; 1-filtering device; 2-fan; 11-circulating water pump; 12-sponge; 13-circulating water circuit; 14-water outlet plate; 15-water tank; 151-nozzle; 111-acquisition module; 112-comparison module; 113-first adjustment module; 114-second adjustment module. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0052] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] This embodiment provides a range hood that can filter oil smoke. In a possible implementation, the range hood can be, but is not limited to, an integrated stove, a side suction range hood, a top suction range hood, a downdraft range hood, and the like.

[0056] Please refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of the range hood 100 provided in an embodiment of the present invention. The range hood 100 may also include Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

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

[0058] The components of the memory 120 and the controller 130 are electrically connected to each other 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 oil fume filtering device 110 includes at least one software function module that can be stored in the memory 120 in the form of software or firmware or solidified in the operating system (OS) of the range hood 100. The controller 130 is used to execute the executable modules stored in the memory 120, such as the software function modules and computer programs included in the oil fume filtering device 110.

[0059] The memory 120 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 120 is used to store a program, and the controller 130 executes the program after receiving an execution instruction.

[0060] Please refer to Figure 2 , Figure 2 For application Figure 1 FIG. 1 is a flow chart of a method for filtering oil smoke of a range hood 100 , and the method including each step is described in detail below.

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

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

[0063] S203: When the oil smoke concentration value is less than or equal to the critical concentration threshold, adjust the rotation speed of the fan.

[0064] S204: When the oil smoke concentration value is greater than the critical concentration threshold, the parameters of the filtering device are adjusted.

[0065] like Figure 3 , which is a schematic diagram of the structure of a range hood 100, the range hood 100 comprises a filter device 1 and a fan 2. A controller 130 of the range hood 100 is in communication connection with the filter device 1 and the fan 2. Figure 3 The middle arrow indicates the filtering direction of the range hood 100 .

[0066] An oil fume detection device can be set at the outlet position of the fan 2, and the oil fume concentration value at the outlet of the fan 2 can be detected based on the oil fume detection device, and the detected oil fume concentration value is sent 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. When the oil fume concentration value is greater than the critical concentration threshold, the parameters of the filter device 1 are adjusted to improve the oil fume filtering effect. When the oil fume concentration value is less than or equal to the critical concentration threshold, the speed of the fan 2 can be adjusted to achieve the oil fume filtering effect.

[0068] The user can set the critical concentration threshold by himself, and can also determine the critical concentration threshold based on the historical usage 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 can be compared with the critical concentration threshold in real time, so as to adjust the rotation speed of the fan 2 or the parameters of the filter 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 also be obtained according to a preset period, and based on the comparison relationship between the obtained oil fume concentration value at the outlet of the fan 2 and the critical concentration threshold, the rotation speed of the fan 2 or the parameters of the filter device 1 are adjusted.

[0071] It should be noted that the preset period can be set to 1 minute, 2 minutes, 3 minutes, etc., and the embodiment of the present invention does not impose any specific limitation on this.

[0072] When the oil smoke concentration value is less than or equal to the critical concentration threshold, there are multiple ways to adjust the speed of the fan. In one implementation, Figure 4 As shown, the following steps are included:

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

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

[0075] Among them, the safe oil fume concentration threshold is lower than the critical concentration threshold.

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

[0077] The target speed is the first speed that is greater than the current speed.

[0078] S203-4: Control the fan to operate at the target 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, the rotation speed of the fan 2 can be adjusted based on the current operating state of the fan 2.

[0080] In one example, when the fan 2 is not in operation, if the oil fume concentration value detected at the outlet of the fan 2 is less than or equal to the critical concentration threshold, the fan 2 is turned on and operated at the first speed. When the fan 2 is operating at the first 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, the oil fume concentration value at the outlet of the fan 2 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 first preset speed greater than the first speed can be obtained from multiple preset speeds as the target speed, that is, when the multiple preset speeds include the first speed, the second speed and the third speed, and the second speed is greater than the first speed, and the third speed is greater than the second speed, the first second speed greater than the first speed is obtained from the multiple preset speeds as the target speed, and the fan 2 is controlled to operate at the second speed.

[0081] When the fan 2 is operating at the second 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, 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 first third speed greater than the second speed can be obtained from multiple preset speeds as the target speed, and the fan 2 is controlled to operate at the third speed.

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

[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, there is no need to filter the oil fume, that is, there is no need to adjust the rotation speed of the fan 2 and there is no need to adjust the parameters of the filtering device 1.

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

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

[0086] When the oil smoke concentration value is greater than the critical concentration threshold, there are multiple ways to adjust the parameters of the filter device. In one implementation, Figure 5 As shown, the following steps are included:

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

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

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

[0090] Reference Figure 6 , showing that the filter device 1 includes a circulating water pump 11. The filter device 1 also includes a sponge 12 and a circulating water circuit 13. The filter device 1 also includes a water outlet plate 14 and a water tank 15. The water outlet plate 14 is provided with a plurality of array-type water outlets, such as Figure 7 As shown, it is a partial schematic diagram of the water tank 15, and the water tank 15 is provided with a plurality of nozzles 151 arranged in an array corresponding to each water outlet. The circulating water pump 11 is used to control the flow rate of water in the circulating water circuit 13. After the sponge 12 is wetted by the nozzle 151 provided on the water tank 15, the oil smoke will be adsorbed into the sponge 12, and the water in the sponge 12 will flow into the circulating water circuit 13. By controlling the power of the circulating water pump 11, the cross-sectional area of ​​the water column ejected by the nozzle 151 can be changed. When the power of the circulating water pump 11 is greater, the cross-sectional area of ​​the water column ejected by the nozzle 151 is greater. When the cross-sectional area of ​​the water column is greater, the oil smoke filtering area is greater, and the oil smoke filtering effect is better.

[0091] When it is detected that the oil smoke concentration value at the outlet of the fan 2 is greater than the critical concentration threshold, the circulating water pump 11 of the filtering device 1 is controlled to operate at the first power. When the circulating water pump 11 operates at the first power, the flow rate of the water flow in the circulating water circuit 13 is the first flow rate. At this time, the area of ​​the water column ejected by the nozzle 151 is controlled to be the 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, and based on the difference, the corresponding target preset difference range is determined from multiple preset difference ranges, and the power corresponding to the target preset difference range is determined, and the power of the current circulating water pump 11 is compensated based on the power.

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

[0094] In another implementation method of adjusting the parameters of the filter device when the oil smoke concentration value is greater than the critical concentration threshold, as Figure 8 As shown, the following steps are included:

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

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

[0097] The first power is smaller 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, and 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 means that when the circulating water pump 11 is currently operating at the first power, the oil fume concentration value at the outlet of the fan 2 has not decreased. Therefore, it is necessary to further filter the oil fume, that is, control the circulating water pump 11 to adjust from the first power to the second power, thereby adjusting the water flow rate in the circulating water circuit 13 to the second flow rate, wherein the second flow rate is greater than the first flow rate. At this time, the cross-sectional area of ​​the water column ejected by the nozzle 151 is controlled to be the second area, and the second area is greater than the first area, thereby increasing the filtering area of ​​the oil fume.

[0099] Since the power of the circulating water pump 11 is adjusted from the first power to the second power, the water flow velocity in the circulating water circuit 13 is adjusted from the first flow velocity to the second flow velocity, and the cross-sectional area of ​​the water column ejected by the nozzle 151 is changed from the first area to the second area. Since the sponge 12 absorbs the oil smoke onto the sea surface after being wetted, when the water flow velocity of the circulating water circuit 13 is increased from the first flow velocity to the second flow velocity, the cross-sectional area of ​​the water column is increased, thereby improving the filtering effect of the sponge 12 on the oil smoke.

[0100] When the power of the circulating water pump 11 is set to 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 being greater than the critical concentration threshold when the circulating water pump 11 operates at the first power, the circulating water pump 11 is controlled to adjust 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 being greater than the critical concentration threshold when the circulating water pump 11 operates at the second power, the circulating water pump 11 is controlled to adjust 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 meet the requirement of being less than or equal to the critical concentration threshold, the oil fume is further filtered by controlling other components of the filtering device 1.

[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 adjusting the 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 speed of fan 2 is determined, and 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 speed is obtained from multiple preset speeds, the fan 2 is controlled to operate at the target speed, and the circulating water pump 11 is controlled to maintain the first power operation.

[0103] In another example, when the circulating water pump 11 operates at a first power, a first oil fume concentration value at the outlet of the fan 2 is obtained, and the first oil fume concentration value is compared with a 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 a first speed, and the circulating water pump 11 is controlled to maintain the first power.

[0104] In another implementation method of adjusting the parameters of the filter device when the oil smoke concentration value is greater than the critical concentration threshold, as Fig. 9 As shown, the following steps are included:

[0105] S401: Obtain a second oil smoke concentration value at a fan outlet when the circulating water pump operates at a second power.

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

[0107] When the circulating water pump 11 operates 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 operates at the maximum power, the oil fume concentration at the outlet of the fan 2 cannot be reduced. Therefore, it is necessary to further control other components of the filtering device 1 to further filter the oil fume.

[0108] That is, when the second oil smoke 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] When a plurality of nozzles 151 eject a three-dimensional dot matrix high-pressure jet water column, the oil smoke is absorbed and carried away after being fully contacted by the water column through the liquid absorption principle. When the water flow velocity in the circulating water circuit 13 remains 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 ejected 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 larger the cross-sectional area of ​​the ejected water column, that is, the thicker the water column. When the cross-sectional area of ​​the ejected water column is larger, the efficiency of liquid absorbing oil smoke is higher, and the water column is ejected onto the sponge 12 opposite and absorbed by the sponge 12. The sponge 12 releases the liquid after being absorbed to saturation, and the liquid is pumped away by the circulating water pump 11 along the circulating water circuit 13 for recycling.

[0110] In one 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 is obtained when the circulating water pump 11 is running at the second power, and 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 the first distance. The third oil fume concentration value at the outlet of the fan 2 is obtained when the distance between the nozzle 151 and the corresponding water outlet is the first distance, 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 the second distance, wherein the second distance is less than the first distance.

[0111] When the nozzle 151 includes a top rod, a second oil fume concentration value at the outlet of the fan 2 is obtained when the circulating water pump 11 is running at the second power. 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 top rod corresponding to the nozzle 151 and the corresponding water outlet to be the first distance. When the distance between the top rod corresponding to 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. 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 top rod corresponding to the nozzle 151 and the corresponding water outlet to be the second distance, wherein the second distance is smaller than the first distance.

[0112] Please refer to Fig.10 The embodiment of the present invention also provides a method for applying Figure 1 The oil fume filtering device 110 of the range hood 100 includes:

[0113] An acquisition module 111 is used to acquire the oil smoke concentration value at the fan outlet;

[0114] A comparison module 112, for comparing the oil smoke concentration value with a critical concentration threshold;

[0115] The first adjustment module 113 is used to adjust the speed of the fan when the smoke concentration value is less than or equal to the critical concentration threshold;

[0116] The second adjustment module 114 is used to adjust the parameters of the filtering device when the oil smoke concentration value is greater than the critical concentration threshold.

[0117] The present invention further provides a range hood 100, which includes a controller 130 and a memory 120. The memory 120 stores computer executable instructions, and when the computer executable instructions are executed by the controller 130, the oil fume filtering method is implemented.

[0118] The embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by the controller 130, the oil fume filtering method is implemented.

[0119] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0120] In addition, each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part. If the function is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

[0121] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0122] The above are only various embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fume filtering method, characterized in that: A controller applied to a range hood, the range hood further comprising a filter device and a fan, the controller being communicatively connected with the filter device and the fan, the method comprising: Obtaining the oil smoke concentration value at the fan outlet; comparing the oil smoke concentration value with a critical concentration threshold; When the oil smoke concentration value is less than or equal to the critical concentration threshold, adjusting the rotation speed of the fan; When the oil smoke concentration value is greater than the critical concentration threshold, the parameters of the filtering device are adjusted.

2. The method according to claim 1, characterized in that The step of adjusting the rotation speed of the fan when the oil smoke concentration value is less than or equal to the critical concentration threshold value comprises: When the oil smoke concentration value is less than or equal to the critical concentration threshold, determining the current rotation speed of the fan; Comparing the oil fume concentration value with a safe oil fume concentration threshold, wherein the safe oil fume concentration threshold is less than the critical concentration threshold; When the oil fume concentration value is greater than the safety oil fume concentration threshold, obtaining a target speed from a plurality of preset speeds, wherein the target speed is the first speed greater than the current speed; The fan is controlled to operate at a target speed.

3. The method according to claim 1, characterized in that The filtering device comprises a circulating water pump, a water outlet plate and a water tank, the water outlet plate is provided with a plurality of array-type water outlets, the water tank is provided with nozzles arranged in an array corresponding to each water outlet, and when the oil smoke concentration value is greater than the critical concentration threshold, the step of adjusting the parameters of the filtering device comprises: When the oil smoke 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 ejected from the nozzle.

4. The method according to claim 3, characterized in that The method further comprises: Acquire a first oil smoke concentration value at the fan outlet when the circulating water pump operates at a first power; In response to the first oil smoke concentration value being greater than the critical concentration threshold, the circulating water pump is controlled to adjust from the first power to a second power, wherein the first power is less than the second power.

5. The method according to claim 4, characterized in that The filtering device further includes a telescopic motor, the water tank is connected to the water outlet plate via the telescopic motor, and the method further includes: Acquire a second oil smoke concentration value at the fan outlet when the circulating water pump operates at a second power; In response to the second oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate so as to control the distance between the nozzle and the corresponding water outlet.

6. The method according to claim 5, characterized in that The step of controlling the telescopic motor to operate in response to the second oil smoke concentration value being greater than the critical concentration threshold value so as to control the distance between the nozzle and the corresponding water outlet comprises: In response to the second oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate so as to control the distance between the nozzle and the corresponding water outlet to be a first distance.

7. The method according to claim 6, characterized in that The method further comprises: Acquire a third oil smoke concentration value at the fan outlet when the distance between the nozzle and the corresponding water outlet is a first distance; In response to the third oil smoke concentration value being greater than the critical concentration threshold, the telescopic motor is controlled to operate so as to control the distance between the nozzle and the corresponding water outlet to be a second distance, wherein the second distance is smaller than the first distance.

8. A fume filtering device, characterized in that: A controller applied to a range hood, the range hood further comprising a filter device and a fan, the controller being communicatively connected with the filter device and the fan, the device comprising: An acquisition module, used for acquiring the oil smoke concentration value at the fan outlet; A comparison module, used for comparing the oil smoke concentration value with a critical concentration threshold; A first adjustment module, configured to adjust the rotation speed of the fan when the oil smoke concentration value is less than or equal to the critical concentration threshold; The second adjustment module is used to adjust the parameters of the filtering device when the oil smoke concentration value is greater than the critical concentration threshold.

9. A range hood, characterized in that: The range hood includes a controller, a filter device and a fan, wherein the controller is communicatively connected with the filter device and the fan, and is used to: obtain the oil fume concentration value at the fan outlet; compare the oil fume concentration value with a critical concentration threshold; when the oil fume concentration value is less than or equal to the critical concentration threshold, adjust the rotation speed of the fan; when the oil fume concentration value is greater than the critical concentration threshold, adjust the parameters of the filter device.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a controller, the steps of the method according to any one of claims 1 to 7 are implemented.

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