Cleaning control method of range hood, range hood and storage medium

Abstract

The application relates to the field of household appliances, in particular to a cleaning control method of an oil fume exhaust machine, the oil fume exhaust machine and a storage medium, the method comprising the following steps: determining the oil stain pollution degree of the oil fume exhaust machine according to detection data of an oil stain detection unit, so as to select a corresponding cleaning strategy; when a first cleaning strategy is selected, sequentially controlling a water inlet device, a heating device and a condensing device to work, and finally controlling the rotation of an impeller of a fan system to realize cleaning of the impeller; when a second cleaning strategy is selected, sequentially controlling the water inlet device and the heating device to work, and finally controlling the rotation of the impeller of the fan system to realize cleaning of the impeller. The method can select different cleaning strategies according to the oil stain degree of the oil fume exhaust machine, and the cleaning effect of the oil fume exhaust machine is improved.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a range hood cleaning control method, a range hood, and a storage medium. Background Art

[0002] Because range hoods significantly reduce the problem of cooking fumes, they have become an indispensable kitchen appliance in modern households. Range hoods utilize a centrifugal fan installed inside the hood to absorb and exhaust fumes. As the impeller rotates, negative pressure is generated at the fan's center, guiding the fumes beneath the hood and out the door. However, over time, fumes accumulate on the impeller surface. Without regular cleaning, the hood's performance deteriorates, affecting its effectiveness. Consequently, cleaning range hoods has become a new concern.

[0003] The self-cleaning range hoods currently on the market use only the impeller's rotation to flush away grease. While these self-cleaning range hoods can effectively clean simple grease, they are ineffective against heavy grease with the impeller alone. Summary of the Invention

[0004] Based on this, it is necessary to provide an oil cleaning device and a range hood to address the above technical problems.

[0005] In a first aspect, an embodiment of the present invention provides a range hood cleaning control method, wherein the range hood includes a fan system, a water inlet device, a heating device, and a condensing device connected to the fan system, and an oil detection unit provided in the fan system. The method includes:

[0006] determining the oil pollution degree of the range hood according to the detection data of the oil pollution detection unit;

[0007] Selecting a corresponding cleaning strategy according to the oil pollution degree; the cleaning strategy includes a first cleaning strategy and a second cleaning strategy, the oil pollution degree corresponding to the first cleaning strategy being higher than the oil pollution degree corresponding to the second cleaning strategy;

[0008] When the first cleaning strategy is selected, the water inlet device is controlled to flow clean water into the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, the condensing device is controlled to condense the heated oil-water mixture, and the impeller of the fan system is controlled to rotate to clean the impeller;

[0009] When the second cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, and the impeller of the fan system is controlled to rotate to clean the impeller.

[0010] In one of the embodiments, the oil contamination detection unit includes a weighing sensor for detecting the mass of the fan system; and the determining the oil contamination level of the range hood according to the detection data of the oil contamination detection unit includes:

[0011] If the mass of the fan system is greater than or equal to a first mass threshold, it is determined that the oil contamination level of the range hood is a heavy oil contamination; and if the mass of the fan system is greater than a second mass threshold and less than the first mass threshold, it is determined that the oil contamination level of the range hood is a moderate oil contamination.

[0012] In one of the embodiments, the oil contamination detection unit includes a rotating speed sensor for detecting the rotating speed of the fan system under a set working air volume; and the determining the oil contamination level of the range hood according to the detection data of the oil contamination detection unit includes:

[0013] If the rotating speed of the fan system is less than or equal to a first rotating speed threshold, it is determined that the oil contamination level of the range hood is a heavy oil contamination; and if the rotating speed of the fan system is greater than the first rotating speed threshold and less than a second rotating speed threshold, it is determined that the oil contamination level of the range hood is a moderate oil contamination.

[0014] In one of the embodiments, the oil contamination detection unit includes a thickness measuring sensor for detecting the oil contamination thickness of the fan system; and the determining the oil contamination level of the range hood according to the detection data of the oil contamination detection unit includes:

[0015] If the oil contamination thickness of the fan system is greater than or equal to a first thickness threshold, it is determined that the oil contamination level of the range hood is a heavy oil contamination; and if the oil contamination thickness of the fan system is greater than a second thickness threshold and less than the first thickness threshold, it is determined that the oil contamination level of the range hood is a moderate oil contamination.

[0016] In one of the embodiments, the water inlet device includes a water tank, a first control valve, and a water inlet mechanism, the first control valve is connected with the water tank and the water inlet mechanism, and the first control valve is controlled to be opened when the first cleaning strategy or the second cleaning strategy is selected.

[0017] In one of the embodiments, the device further comprises a temperature sensor arranged in the fan system, after the heating device is heated, when the temperature sensor detects that the temperature in the fan system reaches a first temperature threshold, the heating device is controlled to stop working; after the condensing device is condensed, when the temperature sensor detects that the temperature in the fan system is lower than a second temperature threshold, the condensing device is controlled to stop working.

[0018] In one of the embodiments, the volute of the fan system is provided with a ring wall hole and a blocking device passing through the ring wall hole, when the water inlet device discharges water, the blocking device is controlled to open the ring wall hole, after the heating device is heated, the blocking device is controlled to block the ring wall hole.

[0019] In one of the embodiments, the blocking device comprises a motor and a baffle connected with the motor, when the water inlet device discharges water, the motor is controlled to rotate to drive the baffle to open the ring wall hole, after the heating device is heated, the motor is controlled to rotate to drive the baffle to block the ring wall hole.

[0020] In the second aspect, the embodiment provides an oil fume exhauster, comprising a fan system, a water inlet device, a heating device and a condensing device in communication with the fan system, an oil stain detection unit arranged in the fan system and a controller, the controller is used to realize the content of the first aspect.

[0021] Compared with the prior art, the present application has the following application effects:

[0022] 1. Different cleaning strategies can be selected according to the degree of oil stains;

[0023] 2. In the first cleaning strategy, the heating device is used to dilute the oil-water mixture, then the condensing device is used to quickly condense the diluted oil-water mixture, finally the impeller is controlled to rotate to clean the impeller, thereby improving the cleaning effect of the oil fume exhauster.

[0024] 3. In the second cleaning strategy, the heating device is used to dilute the oil-water mixture, then the impeller is controlled to rotate to clean the impeller, thereby improving the cleaning effect of the oil fume exhauster. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of the oil fume exhauster in one of the embodiments of the present application;

[0026] Figure 2 It is a connection structure schematic view of the water inlet device and the blocking device of the oil fume exhauster in one of the embodiments of the present application;

[0027] Figure 3 It is a flow schematic view of the cleaning control method of the oil fume exhauster in one of the embodiments of the present application;

[0028] Figure 4 Flowchart of the cleaning control method of the range hood in an example embodiment of the present application;

[0029] Figure 5 Flowchart of the first cleaning strategy in an example embodiment of the present application;

[0030] Figure 6 Flowchart of the second cleaning strategy in an example embodiment of the present application;

[0031] Wherein, 10, fan system; 20, water inlet device; 30, heating device; 40, condensing device; 50, blocking device; 101, impeller; 102, volute; 201, water tank; 202, first control valve; 203, water inlet mechanism; 501, motor; 502, baffle; 2031, first pipeline; 2032, nozzle; 1011, second pipeline. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can also be applied to other similar scenarios without creative labor, based on these drawings. Unless the context clearly indicates otherwise or otherwise stated, the same reference numbers in the drawings represent the same structures or operations.

[0033] As shown in the present application and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not specifically refer to the singular, but also include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0034] Although the present application makes various references to certain modules in the system according to the embodiments of the present application, however, any number of different modules can be used and run on the computing device and / or processor. The modules are only illustrative, and different aspects of the system and method can use different modules.

[0035] It should be understood that when a unit or module is described as "connected", "coupled" to other units, modules or blocks, it can mean direct connection or coupling, or communication with other units, modules or blocks, or there can be intermediate units, modules or blocks, unless the context clearly indicates otherwise. The term "and / or" used herein can include any and all combinations of one or more related listed items.

[0036] The embodiment of the present invention provides a range hood, such as Figure 1 As shown, the range hood includes a fan system 10 and a water inlet device 20, a heating device 30, a condensing device 40 connected to the fan system, a temperature sensor (not shown in the figure) provided in the fan system 10, a blocking device 50, an oil detection unit (not shown in the figure) and a controller (not shown in the figure) provided in the fan system 10.

[0037] The fan system 10 includes an impeller 101 and a volute 102 . The impeller 101 is located inside the volute 102 . The volute 102 is provided with an annular wall hole (not indicated in the figure) and an oil outlet hole (not indicated in the figure).

[0038] like Figure 2 As shown, the water inlet device 20 includes a water tank 201, a first control valve 202, and a water inlet mechanism 203. The first control valve 202 is connected to the water tank 201 and the water inlet mechanism 203. The water inlet mechanism 203 includes a first pipe 2031 and a plurality of nozzles 2032 connected to the first pipe 2031. The first pipe 2031 is connected to the first control valve 202, and the nozzles 2032 are arranged in the annular wall holes.

[0039] The heating device 30 and the condensing device 40 are connected to the fan system 10 through a second pipe 1011 .

[0040] like Figure 2 As shown, the blocking device 50 passes through the annular wall hole and includes a motor 501 and a baffle 502 connected to the motor 501 .

[0041] The oil stain detection unit includes at least one of a weighing sensor for detecting the mass of the fan system 10, a speed sensor for detecting the speed of the fan system 10 at a set working air volume, and a thickness sensor for detecting the thickness of the oil stain on the fan system 10.

[0042] Optionally, the fan system 10 includes at least two temperature sensors, which are respectively located on the left and right sides of the volute 102 of the fan system.

[0043] like Figure 3 As shown, a range hood cleaning control method is provided, which is applied to Figure 1 The controller end of the range hood shown in the figure specifically includes the following steps:

[0044] S201: Determine the oil pollution degree of the range hood according to the detection data of the oil pollution detection unit.

[0045] Specifically, when the oil contamination detection unit is a weighing sensor, the degree of oil contamination of the range hood is determined according to the mass of the fan system. When the oil contamination detection unit is a rotating speed sensor, the degree of oil contamination of the range hood is determined according to the rotating speed of the impeller in the fan system. When the oil contamination detection unit is a thickness measuring sensor, the degree of oil contamination of the range hood is determined according to the thickness of the oil film on the fan system.

[0046] S202, according to the degree of oil contamination, a corresponding cleaning strategy is selected.

[0047] The cleaning strategy includes a first cleaning strategy and a second cleaning strategy, and the degree of oil contamination corresponding to the first cleaning strategy is higher than the degree of oil contamination corresponding to the second cleaning strategy.

[0048] S203, when the first cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, the condensing device is controlled to condense the heated oil-water mixture, and the impeller of the fan system is controlled to rotate to clean the impeller.

[0049] S204, when the second cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, and the impeller of the fan system is controlled to rotate to clean the impeller.

[0050] Specifically, since the first control valve 202 in the water inlet device 20 is connected with the water tank 201 and the water inlet mechanism 203, when the first cleaning strategy or the second cleaning strategy is selected, the controller controls the first control valve 202 to open, and the water in the water tank 201 is introduced into the water inlet mechanism 203, and the clean water is sprayed into the volute 102 of the fan system 10 by the water inlet mechanism 203.

[0051] The difference is that, since the degree of oil contamination corresponding to the first cleaning strategy is higher than the degree of oil contamination corresponding to the second cleaning strategy, when the first cleaning strategy is executed, the heating device 30 needs to be controlled to heat the oil-water mixture in the fan system 10 first, then the condensing device 40 is controlled to condense the heated oil-water mixture, and finally the impeller 101 of the fan system 10 is controlled to rotate to clean the impeller. When the second cleaning strategy is executed, only the heating device 30 needs to be controlled to heat the oil-water mixture in the fan system 10, and then the impeller 101 of the fan system 10 is controlled to rotate, which can realize cleaning of the impeller.

[0052] In the embodiment, the detection data of the oil stain detection unit can accurately determine the oil stain pollution degree of the range hood, and a corresponding range hood cleaning strategy is set according to different degrees of oil stain. When the first cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, the condensing device is controlled to condense the heated oil-water mixture, and the impeller of the fan system is controlled to rotate to clean the impeller. When the second cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, and the impeller of the fan system is controlled to rotate to clean the impeller, thereby realizing efficient cleaning of the oil stain of the fan system of the range hood and improving the cleaning effect of the impeller.

[0053] In one of the embodiments, S201 determines the oil stain pollution degree of the range hood according to the detection data of the oil stain detection unit, and specifically includes the following contents:

[0054] If the mass of the fan system is greater than or equal to the first mass threshold, it is determined that the oil stain pollution degree of the range hood is heavy oil stain pollution. If the mass of the fan system is greater than the second mass threshold and less than the first mass threshold, it is determined that the oil stain pollution degree of the range hood is moderate oil stain pollution.

[0055] In detail, the first mass threshold and the second mass threshold are set, and the first mass threshold is greater than the second mass threshold. If the mass of the fan system detected by the mass sensor is greater than or equal to the first mass threshold, it indicates that the oil stain pollution degree of the range hood is heavy oil stain pollution, and the first cleaning strategy needs to be selected for cleaning. If the mass of the fan system detected by the mass sensor is greater than the second mass threshold and less than the first mass threshold, it indicates that the oil stain pollution degree of the range hood is moderate oil stain pollution, and the second cleaning strategy needs to be selected for cleaning. If the mass of the fan system detected by the mass sensor is less than or equal to the second mass threshold, it indicates that the oil stain pollution degree of the range hood is light oil stain pollution or no pollution, and the range hood does not need to be cleaned.

[0056] In another embodiment, S201 determines the oil stain pollution degree of the range hood according to the detection data of the oil stain detection unit, and further includes the following contents:

[0057] If the rotating speed of the fan system is less than or equal to the first rotating speed threshold, it is determined that the oil stain pollution degree of the range hood is heavy oil stain pollution. If the rotating speed of the fan system is greater than the first rotating speed threshold and less than the second rotating speed threshold, it is determined that the oil stain pollution degree of the range hood is moderate oil stain pollution.

[0058] In detail, the first rotation speed threshold and the second rotation speed threshold are set, and the first rotation speed threshold is less than the second rotation speed threshold. If the rotation speed of the fan system detected by the rotation speed sensor is less than or equal to the first rotation speed threshold, it indicates that the oil contamination degree of the range hood is heavy oil contamination, and the first cleaning strategy needs to be selected for cleaning. If the rotation speed of the fan system detected by the rotation speed sensor is greater than the first rotation speed threshold and less than the second rotation speed threshold, it indicates that the oil contamination degree of the range hood is moderate oil contamination, and the second cleaning strategy needs to be selected for cleaning. If the rotation speed of the fan system detected by the rotation speed sensor is greater than or equal to the second quality threshold, it indicates that the oil contamination degree of the range hood is light oil contamination or no contamination, and the range hood does not need to be cleaned.

[0059] In another embodiment, step 201 determines the oil contamination degree of the range hood according to the detection data of the oil contamination detection unit, including the following contents:

[0060] If the oil thickness of the fan system is greater than or equal to the first thickness threshold, it is determined that the oil contamination degree of the range hood is heavy oil contamination. If the oil thickness of the fan system is greater than the second thickness threshold and less than the first thickness threshold, it is determined that the oil contamination degree of the range hood is moderate oil contamination.

[0061] In detail, the first thickness threshold and the second thickness threshold are set, and the first thickness threshold is greater than the second thickness threshold. If the oil thickness of the fan system detected by the thickness sensor is greater than or equal to the first thickness threshold, it indicates that the oil contamination degree of the range hood is heavy oil contamination, and the first cleaning strategy needs to be selected. If the oil thickness of the fan system detected by the thickness sensor is greater than the second thickness threshold and less than the first thickness threshold, it indicates that the oil contamination degree of the range hood is moderate oil contamination, and the second cleaning strategy needs to be selected. If the oil thickness of the fan system detected by the thickness sensor is less than or equal to the second thickness threshold, it indicates that the oil contamination degree of the range hood is light oil contamination or no contamination, and the range hood does not need to be cleaned.

[0062] In the above three embodiments, different oil contamination detection units are used to detect the oil contamination state of the range hood, thereby improving the selection accuracy of the cleaning strategy and further improving the cleaning effect of the range hood.

[0063] It should be noted that during the oil contamination cleaning process of the first cleaning strategy or the second cleaning strategy, if the oil contamination detection unit detects that the mass of the fan system detected by the mass sensor is less than or equal to the second mass threshold, or the rotation speed of the fan system detected by the rotation speed sensor is greater than or equal to the second mass threshold, or the oil thickness of the fan system detected by the thickness sensor is less than or equal to the second thickness threshold, that is, when it is determined that the oil contamination degree of the range hood is light oil contamination or no contamination, the cleaning is stopped.

[0064] In one embodiment, whether the first cleaning strategy is selected as S203 or the second cleaning strategy is selected as S204, before the controller controls the impeller of the fan system to rotate to achieve cleaning of the impeller, the method further comprises:

[0065] After the heating device 30 performs heating, when the temperature sensor detects that the temperature in the fan system 10 reaches a first temperature threshold, the heating device 30 is controlled to stop working. After the condensing device 40 performs condensing, when the temperature sensor detects that the temperature in the fan system 10 is lower than a second temperature threshold, the condensing device 40 is controlled to stop working.

[0066] In detail, when the heating device 30 works, the heat medium is sent into the volute 102 of the fan system 10 through the second pipeline 1011 to heat the oil-water mixture in the fan system 10. When the temperature sensor detects that the temperature in the fan system 10 reaches the first temperature threshold, after waiting for a first preset time length, the heating device 30 is controlled to stop working, at this time, the fan system 10 is in a steam cleaning state. At this time, if it is under the second cleaning strategy, the cleaning of the impeller of the fan system is achieved by continuing to control the rotation of the impeller. If it is under the first cleaning strategy, the condensing device 40 is controlled to work, the cooling medium is sent into the volute 102 of the fan system 10 through the second pipeline 1011 to condense the oil-water mixture in the fan system 10, and when the temperature sensor detects that the temperature in the fan system 10 is lower than the second temperature threshold, after waiting for a second preset time length, the condensing device 40 is controlled to stop working, at this time, the oil stains in the fan system 10 are rapidly cooled into ice sand, and the sand-shaped oil stains are thrown out by controlling the rotation of the impeller of the fan system, thereby achieving the cleaning of the impeller.

[0067] In the embodiment, the temperature sensor arranged in the volute of the fan system is used to acquire the temperature in the fan system in real time, and the working state of the heating device or the condensing device is timely adjusted according to the comparison result of the temperature and the temperature threshold, thereby improving the cleaning efficiency of the device.

[0068] In one embodiment, whether the first cleaning strategy is selected as S203 or the second cleaning strategy is selected as S204, before the heating device 30 heats the oil-water mixture in the fan system 10, the method further comprises the following content:

[0069] When the water inlet device 20 discharges water, the blocking device 50 is controlled to open the ring wall hole, and after the heating device heats, the blocking device 50 is controlled to block the ring wall hole.

[0070] In detail, the first control valve 202 of the water inlet device 20 is opened, water in the water tank 201 enters the first pipeline 2031 and the plurality of nozzles 2032, the motor 501 of the blocking device 50 rotates to drive the baffle 502 to open the ring wall hole, so that the nozzles 2032 can spray water on the impeller 101 through the ring wall hole to obtain an oil-water mixture. The heating device 30 is controlled to start working until the temperature in the fan system 10 reaches a first temperature threshold, and after waiting for a first preset time length, the heating device 30 is controlled to stop working, at which time the motor 501 of the blocking device 50 rotates to drive the baffle 502 to block the ring wall hole.

[0071] In the present embodiment, by providing the blocking device 60, when the water inlet device 20 discharges water, the baffle 602 is rotated by the motor 601 to open the ring wall hole, so that the cleaning water can enter the fan system until the heating device 30 stops working, thereby obtaining a fully diluted oil-water mixture. After the heating device 30 stops working, the baffle 602 is rotated by the motor 601 to block the ring wall hole, thereby preventing the dirt from being thrown out of the volute 102 and contaminating the nozzles 2032 when the impeller is further rotated to clean the oil stains.

[0072] In addition, after the heating device 30 stops working, if the condensing device 40 is started, the baffle 602 blocking the ring wall hole can also prevent the refrigerant from leaking, thereby improving the working efficiency of the condensing device.

[0073] In one example embodiment, a cleaning control method of an extractor hood is provided, which is applied to a controller of an extractor hood as shown in Figure 1 The oil stain detection unit is a weighing sensor, and the method comprises the following steps:

[0074] S301, as shown in Figure 4 The user starts the self-cleaning mode of the extractor hood, and the impeller 101 of the fan system 10 is controlled to move periodically and alternately clockwise and counterclockwise at a slow speed.

[0075] S302, the weighing sensor is controlled to detect the mass of the fan system 10.

[0076] S303, the relationship between the mass m of the fan system 10 and the first mass threshold M1 and the second mass threshold M2 is determined.

[0077] If the mass m of the fan system 10 is greater than or equal to the first mass threshold M1, it is determined that the extractor hood is heavily contaminated with oil stains, and a first cleaning strategy is selected.

[0078] If the mass m of the fan system 10 is greater than the second mass threshold M2 and less than the first mass threshold M1, it is determined that the extractor hood is moderately contaminated with oil stains, and a second cleaning strategy is selected.

[0079] As shown in Figure 5As shown, the range hood is heavily contaminated with oil. When the first cleaning strategy is selected, the method includes the following steps:

[0080] S401, control the first control valve 202 of the water inlet device 20 to open, and the water in the water tank 201 enters the first pipe 2031 and the multiple nozzles 2032. The motor 501 of the blocking device 50 rotates to drive the baffle 502 to open the annular wall hole, so that the nozzle 2032 can spray water through the annular wall hole to clean the impeller 101 and obtain an oil-water mixture.

[0081] S402, control the heating device 30 to start working until the temperature T in the fan system 10 reaches the first temperature threshold T0, wait for the first preset time t1, control the heating device 30 to stop working, at this time the motor 501 of the blocking device 50 rotates to drive the baffle 502 to cover the ring wall hole.

[0082] S403 , controlling the condensing device 40 to operate, sending the refrigerant into the volute 102 of the fan system 10 through the second pipe 1011 , and condensing the oil-water mixture in the fan system 10 .

[0083] When the temperature sensor detects that the temperature T in the fan system 10 is lower than the second temperature threshold T1, after waiting for the second preset time t2, the condensing device 40 is controlled to stop working. At this time, the oil in the fan system 10 is quickly cooled into a smoothie state.

[0084] S404, controlling the impeller 101 of the fan system 10 to rotate at a high speed to throw out the oil.

[0085] S406 , controlling the weighing sensor to re-detect the mass m of the fan system 10 and compare it with the first mass threshold M1 and the second mass threshold M2 until the detected mass m of the fan system 10 is less than or equal to the second mass threshold M2 , otherwise repeating S401 to S406 .

[0086] like Figure 6 As shown, the range hood is moderately contaminated with oil. When the second cleaning strategy is selected, the method includes the following steps:

[0087] S501, control the first control valve 202 of the water inlet device 20 to open, and the water in the water tank 201 enters the first pipe 2031 and the multiple nozzles 2032. The motor 501 of the blocking device 50 rotates to drive the baffle 502 to open the annular wall hole, so that the nozzle 2032 can spray water through the annular wall hole to clean the impeller 101 and obtain an oil-water mixture.

[0088] S502, control the heating device 30 to start working until the temperature T in the fan system 10 reaches the first temperature threshold T0, wait for a first preset time t1, and then control the heating device 30 to stop working, at this time the motor 501 of the blocking device 50 rotates to drive the baffle 502 to block the ring wall hole.

[0089] S503, control the impeller 101 of the fan system 10 to rotate at high speed to throw out the oil stains.

[0090] S504, control the weighing sensor to detect the mass of the fan system 10 again, and compare the mass with the first mass threshold M1 and the second mass threshold M2, until the detected mass m of the fan system 10 is less than or equal to the second mass threshold M2, otherwise repeat S501-S504.

[0091] The technical features of the above embodiments can be combined in any way. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0092] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A range hood cleaning control method, wherein the range hood comprises a fan system, a water inlet device, a heating device, a condensing device connected to the fan system, and an oil stain detection unit provided in the fan system, characterized in that: The method comprises: determining the oil pollution degree of the range hood according to the detection data of the oil pollution detection unit; Selecting a corresponding cleaning strategy according to the oil pollution degree; the cleaning strategy includes a first cleaning strategy and a second cleaning strategy, the oil pollution degree corresponding to the first cleaning strategy being higher than the oil pollution degree corresponding to the second cleaning strategy; When the first cleaning strategy is selected, the water inlet device is controlled to flow clean water into the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, the condensing device is controlled to condense the heated oil-water mixture, and the impeller of the fan system is controlled to rotate to clean the impeller; When the second cleaning strategy is selected, the water inlet device is controlled to flow clean water to the fan system, the heating device is controlled to heat the oil-water mixture in the fan system, and the impeller of the fan system is controlled to rotate to clean the impeller.

2. The method according to claim 1, characterized in that The oil pollution detection unit includes a weighing sensor for detecting the mass of the fan system; and determining the oil pollution degree of the range hood according to the detection data of the oil pollution detection unit includes: If the quality of the fan system is greater than or equal to the first quality threshold, the oil pollution degree of the range hood is determined to be severe oil pollution; if the quality of the fan system is greater than the second quality threshold and less than the first quality threshold, the oil pollution degree of the range hood is determined to be moderate oil pollution.

3. The method according to claim 1, characterized in that The oil pollution detection unit includes a speed sensor for detecting the speed of the fan system at a set working air volume; and determining the oil pollution degree of the range hood based on the detection data of the oil pollution detection unit includes: If the rotational speed of the fan system is less than or equal to the first rotational speed threshold, the oil pollution degree of the range hood is determined to be severe oil pollution; if the rotational speed of the fan system is greater than the first rotational speed threshold and less than the second rotational speed threshold, the oil pollution degree of the range hood is determined to be moderate oil pollution.

4. The method according to claim 1, wherein The oil stain detection unit includes a thickness sensor for detecting the thickness of oil stains on the fan system; and determining the oil stain contamination degree of the range hood based on the detection data of the oil stain detection unit includes: If the oil stain thickness of the fan system is greater than or equal to the first thickness threshold, the oil stain pollution degree of the range hood is determined to be severe oil stain pollution; if the oil stain thickness of the fan system is greater than the second thickness threshold and less than the first thickness threshold, the oil stain pollution degree of the range hood is determined to be moderate oil stain pollution.

5. The method according to claim 1, wherein The water inlet device includes a water tank, a first control valve and a water inlet mechanism. The first control valve is connected to the water tank and the water inlet mechanism. When the first cleaning strategy or the second cleaning strategy is selected, the first control valve is controlled to open.

6. The method according to claim 1, characterized in that The device also includes a temperature sensor provided in the fan system. After the heating device performs heating, when the temperature sensor detects that the temperature in the fan system reaches a first temperature threshold, the heating device is controlled to stop working; after the condensing device performs condensing, when the temperature sensor detects that the temperature in the fan system is lower than a second temperature threshold, the condensing device is controlled to stop working.

7. The method according to claim 1, characterized in that The volute of the fan system is provided with an annular wall hole and a blocking device passing through the annular wall hole. When the water inlet device discharges water, the blocking device is controlled to open the annular wall hole. After the heating device is heated, the blocking device is controlled to cover the annular wall hole.

8. The method according to claim 7, characterized in that The blocking device includes a motor and a baffle connected to the motor. When the water inlet device discharges water, the motor is controlled to rotate to drive the baffle to open the annular wall hole. After the heating device is heated, the motor is controlled to rotate to drive the baffle to cover the annular wall hole.

9. A range hood, characterized in that: It includes a fan system, a water inlet device, a heating device, a condensing device connected to the fan system, an oil pollution detection unit and a controller arranged in the fan system, and the controller implements the steps of the method described in any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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