Method, device and computer equipment for automatic cleaning of range hood

Abstract

The present application belongs to the field of range hoods, and discloses a method, device and computer equipment for automatic cleaning of range hoods. The method comprises: in the heating stage, closing the smoke collecting plate and the check valve blade, and entering the steaming stage after the spraying time of the cleaning liquid at the first preset temperature reaches the first preset time; in the steaming stage, controlling the cleaning device to spray the cleaning liquid into the range hood, determining and controlling the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade according to the current steam temperature, and entering the cleaning stage after the spraying time of the cleaning liquid steam at the second preset temperature reaches the second preset time; in the cleaning stage, controlling the wind wheel motor to work according to the preset working mode, determining and controlling the third opening angle of the smoke collecting plate and the fourth opening angle of the check valve blade according to the current working mode of the wind wheel motor; after the cleaning is completed, closing the smoke collecting plate and the check valve blade. The use of the present application can improve the cleaning effect and reduce noise.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a method, device and computer equipment for automatically cleaning range hoods. Background Art

[0002] At present, automatic cleaning of range hoods has become a relatively common technology in the industry. In the prior art, a water pump usually draws cleaning liquid into a heater, the heater heats the cleaning liquid to a steam state, and sprays the cleaning liquid steam to the impeller through a nozzle to wash away the oil stains, thereby achieving automatic cleaning of the range hood.

[0003] However, in the prior art, during the automatic cleaning process of the range hood, the smoke collecting plate at the air inlet and the check valve blade at the air outlet are in an open state, so that external air can enter the range hood, which causes the temperature inside the range hood to drop, and the steaming effect cannot be formed, which leads to poor cleaning effect of oil stains. At the same time, if the smoke collecting plate and the check valve blade are in a completely closed state, due to the high air pressure inside the range hood and the high speed of the motor, whistling noise, wind noise and other noises will be generated, affecting the user experience.

[0004] Therefore, how to improve the cleaning effect and reduce noise when performing automatic cleaning of the range hood is a technical problem that needs to be solved. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device and computer equipment for automatic cleaning of range hoods in response to the above technical problems.

[0006] In a first aspect, a method for automatically cleaning a range hood is provided, the method comprising:

[0007] In the temperature rising stage, the smoke collecting plate installed at the air inlet and the check valve blade installed at the air outlet are closed, the cleaning device is controlled to spray cleaning liquid into the range hood, and after the cleaning device sprays the cleaning liquid at a first preset temperature for a first preset time, the steaming stage is entered;

[0008] In the steaming stage, the cleaning device is controlled to spray cleaning liquid steam into the range hood, and according to the current steam temperature of the cleaning liquid steam, the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade are determined, the smoke collecting plate is controlled to open the first opening angle, and the check valve blade is controlled to open the second opening angle, and after the duration of the cleaning device spraying the cleaning liquid steam of the second preset temperature reaches the second preset duration, the cleaning stage is entered;

[0009] In the cleaning stage, the cleaning device is controlled to spray cleaning liquid of a third preset temperature into the range hood, the wind wheel motor is controlled to work according to a preset working mode, a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade are determined according to the current working mode of the wind wheel motor, and the smoke collecting plate is controlled to open to the third opening angle and the check valve blade is controlled to open to the fourth opening angle;

[0010] After cleaning is completed, the smoke collecting plate and the check valve blade are closed.

[0011] As an optional implementation, determining the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade according to the current steam temperature of the cleaning liquid steam includes:

[0012] In the pre-stored correspondence between the steam temperature range and the opening ratio of the smoke collecting plate, query the second opening ratio corresponding to the current steam temperature;

[0013] The product of the second opening ratio and the maximum opening angle of the smoke collecting plate is determined as the first opening angle of the smoke collecting plate;

[0014] The product of the first opening angle and a preset correction coefficient is determined as the second opening angle of the check valve blade.

[0015] As an optional implementation, the working mode of the wind turbine motor includes an inching working mode and a continuous working mode; wherein, in the inching working mode, within each preset cycle duration, the motor runs for a preset inching duration and stops running for a preset stop inching duration;

[0016] In the steaming stage, the working mode of the wind wheel motor is the inching working mode;

[0017] In the cleaning stage, the cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage. In the first third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; in the last third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode; in the first third preset time period of the reverse cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; in the fourth preset time period after the reverse cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode.

[0018] As an optional implementation, the method further includes:

[0019] During the steaming stage, the wind wheel motor is controlled to operate in an inching working mode.

[0020] As an optional embodiment, the cleaning device includes a water pump, a heater and a nozzle, and the method further includes:

[0021] In the heating stage, the water pump is controlled to pump the cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood;

[0022] In the steaming stage, the water pump is controlled to pump the cleaning liquid into the heater, the heater heats the cleaning liquid to a steam state, and the nozzle is controlled to spray the cleaning liquid steam into the range hood;

[0023] During the cleaning phase, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood.

[0024] As an optional implementation, the method further includes:

[0025] In the steaming stage, when it is detected that the current steam temperature is lower than the second preset temperature, the water pump is controlled to stop pumping cleaning liquid, and the heater is controlled to continue heating;

[0026] When it is detected that the current steam temperature is greater than the second preset temperature, the heater is stopped for heating, and the current water pump operation duty cycle corresponding to the current steam temperature is queried in the pre-stored correspondence between the steam temperature range and the water pump operation duty cycle, and the water pump is controlled to pump cleaning fluid based on the current water pump operation duty cycle, wherein the water pump operation duty cycle is that in each cleaning fluid pumping cycle, the water pump runs for a preset cleaning fluid pumping time and stops running for a preset cleaning fluid pumping time.

[0027] As an optional implementation manner, determining the third opening angle of the smoke collecting plate and the fourth opening angle of the check valve blade according to the current working mode of the wind wheel motor includes:

[0028] If the current cleaning sub-stage is the forward cleaning sub-stage, and the current working mode of the wind wheel motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade;

[0029] Otherwise, in the pre-stored correspondence between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate, query the first opening ratio corresponding to the current working mode and the current cleaning sub-stage;

[0030] The product of the first opening ratio and the maximum opening angle of the smoke collecting plate is determined as the third opening angle of the smoke collecting plate;

[0031] The product of the third opening angle and a preset correction coefficient is determined as a fourth opening angle of the check valve blade.

[0032] As an optional embodiment, the cleaning device includes a heater, and the method further includes:

[0033] In the heating stage, obtaining the current heating power of the heater;

[0034] In the pre-stored correspondence between the heating power range and the maximum heating time, query the target maximum heating time corresponding to the current heating power;

[0035] If the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

[0036] As an optional implementation, the first preset temperature is lower than the third preset temperature, and the third preset temperature is lower than the second preset temperature.

[0037] As an optional implementation, the third opening angle is greater than the first opening angle, and the fourth opening angle is greater than the second opening angle.

[0038] As an optional implementation, the preset correction coefficient range is [0.75, 0.82].

[0039] In a second aspect, a device for automatically cleaning a range hood is provided, the device comprising:

[0040] The first closing module is used to close the smoke collecting plate installed at the air inlet and the check valve blade installed at the air outlet during the temperature rising stage, control the cleaning device to spray cleaning liquid into the range hood, and enter the steaming stage after the cleaning device sprays the cleaning liquid at a first preset temperature for a first preset time.

[0041] a first control module, for controlling the cleaning device to spray cleaning liquid steam into the range hood during the steaming stage, determining a first opening angle of the smoke collecting plate and a second opening angle of the check valve blade according to a current steam temperature of the cleaning liquid steam, controlling the smoke collecting plate to open the first opening angle and the check valve blade to open the second opening angle, and entering the cleaning stage after the duration of the cleaning device spraying cleaning liquid steam at a second preset temperature reaches a second preset duration;

[0042] a second control module, configured to control the cleaning device to spray cleaning liquid of a third preset temperature into the range hood during the cleaning stage, control the fan motor to operate in a preset working mode, determine a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade according to the current working mode of the fan motor, and control the smoke collecting plate to open to the third opening angle and the check valve blade to open to the fourth opening angle;

[0043] The second closing module is used to close the smoke collecting plate and the check valve blade after cleaning is completed.

[0044] As an optional implementation manner, the first control module is specifically configured to:

[0045] In the pre-stored correspondence between the steam temperature range and the opening ratio of the smoke collecting plate, query the second opening ratio corresponding to the current steam temperature;

[0046] The product of the second opening ratio and the maximum opening angle of the smoke collecting plate is determined as the first opening angle of the smoke collecting plate;

[0047] The product of the first opening angle and a preset correction coefficient is determined as the second opening angle of the check valve blade.

[0048] As an optional implementation, the working mode of the wind turbine motor includes an inching working mode and a continuous working mode; wherein, in the inching working mode, within each preset cycle duration, the motor runs for a preset inching duration and stops running for a preset stop inching duration;

[0049] In the steaming stage, the working mode of the wind wheel motor is the inching working mode;

[0050] In the cleaning stage, the cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage. During the first third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the last third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode; during the first third preset time period of the reverse cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the fourth preset time period after the reverse cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode.

[0051] As an optional implementation, the device further includes:

[0052] During the steaming stage, the wind wheel motor is controlled to operate in an inching working mode.

[0053] As an optional embodiment, the cleaning device includes a water pump, a heater and a nozzle, and the method further includes:

[0054] In the heating stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood;

[0055] In the steaming stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid to a steam state, and the nozzle is controlled to spray the cleaning liquid steam into the range hood;

[0056] During the cleaning stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood.

[0057] As an optional implementation, the device further includes:

[0058] In the steaming stage, when it is detected that the current steam temperature is lower than the second preset temperature, the water pump is controlled to stop pumping cleaning liquid, and the heater is controlled to continue heating;

[0059] When it is detected that the current steam temperature is greater than the second preset temperature, the heater is stopped for heating, and the current water pump operation duty cycle corresponding to the current steam temperature is queried in the pre-stored correspondence between the steam temperature range and the water pump operation duty cycle, and the water pump is controlled to pump cleaning fluid based on the current water pump operation duty cycle, wherein the water pump operation duty cycle is that in each cleaning fluid pumping cycle, the water pump runs for the preset cleaning fluid pumping time and stops running for the preset cleaning fluid pumping time.

[0060] As an optional implementation manner, the second control module is specifically used to:

[0061] If the current cleaning sub-stage is the forward cleaning sub-stage, and the current working mode of the wind wheel motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade;

[0062] Otherwise, in the pre-stored correspondence between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate, query the first opening ratio corresponding to the current working mode and the current cleaning sub-stage;

[0063] The product of the first opening ratio and the maximum opening angle of the smoke collecting plate is determined as the third opening angle of the smoke collecting plate;

[0064] The product of the third opening angle and a preset correction coefficient is determined as a fourth opening angle of the check valve blade.

[0065] As an optional embodiment, the cleaning device includes a heater, and the device also includes:

[0066] In the heating stage, obtaining the current heating power of the heater;

[0067] In the pre-stored correspondence between the heating power range and the maximum heating time, query the target maximum heating time corresponding to the current heating power;

[0068] If the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

[0069] As an optional implementation, the first preset temperature is lower than the third preset temperature, and the third preset temperature is lower than the second preset temperature.

[0070] As an optional implementation, the third opening angle is greater than the first opening angle, and the fourth opening angle is greater than the second opening angle.

[0071] As an optional implementation, the preset correction coefficient ranges from [0.75, 0.82].

[0072] In a third aspect, a computer device is provided, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and when the processor executes the computer program, the method steps described in the first aspect are implemented.

[0073] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the method steps described in the first aspect are implemented.

[0074] The present application provides a method, device and computer equipment for automatically cleaning a range hood. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: when the range hood is automatically cleaned, the opening angles of the smoke collecting plate and the check valve blades are determined and opened according to the temperature inside the range hood and the working mode of the fan motor. This can ensure that the temperature inside the range hood can meet the temperature for cleaning oil stains, and no noise such as whistles and wind noises are generated. Therefore, while improving the cleaning effect, the noise generation is also reduced.

[0075] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0077] Figure 1 A schematic diagram of the structure of a range hood provided in an embodiment of the present application;

[0078] Figure 2 A flow chart of a method for automatically cleaning a range hood provided in an embodiment of the present application;

[0079] Figure 3 A flow chart of a method for heating up a range hood provided in an embodiment of the present application;

[0080] Figure 4 A flow chart of a method for the steaming stage of a range hood provided in an embodiment of the present application;

[0081] Figure 5 A flow chart of a method for a range hood forward cleaning stage provided in an embodiment of the present application;

[0082] Figure 6 A flow chart of a method for a range hood reverse cleaning stage provided in an embodiment of the present application;

[0083] Figure 7 A schematic diagram of the structure of a range hood automatic cleaning device provided in an embodiment of the present application;

[0084] Figure 8 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0085] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0086] The automatic cleaning method of a range hood provided in the embodiment of the present application can be applied to a range hood. Figure 1As shown, the range hood includes a controller 110, a smoke collecting plate 120, a check valve blade 130, a cleaning device 140 and a wind wheel motor 150. The cleaning device 140 includes a heater 1401, a water pump 1402 and a nozzle 1403. The controller 110 is used to close the smoke collecting plate 120 and the check valve blade 130 during the heating stage, control the cleaning device 140 to spray cleaning liquid into the range hood, and enter the steaming stage after the cleaning device 140 sprays the cleaning liquid of the first preset temperature for a first preset time; during the steaming stage, the cleaning device 140 is controlled to spray the cleaning liquid steam into the range hood, determine the first opening angle of the smoke collecting plate 120 and the second opening angle of the check valve blade 130 according to the current steam temperature of the cleaning liquid steam, control the smoke collecting plate 120 to open the first opening angle, and control the check valve blade 130 to open the second opening angle, After the duration of the cleaning device 140 spraying the cleaning liquid steam of the second preset temperature reaches the second preset duration, the cleaning stage is entered; in the cleaning stage, the cleaning device 140 is controlled to spray the cleaning liquid of the third preset temperature into the range hood, the wind wheel motor 150 is controlled to work according to the preset working mode, and the third opening angle of the smoke collecting plate 120 and the fourth opening angle of the check valve blade 130 are determined according to the current working mode of the wind wheel motor 150, and the smoke collecting plate 120 is controlled to open the third opening angle and the check valve blade 130 is controlled to open the second opening angle; after the cleaning is completed, the smoke collecting plate 120 and the check valve blade 130 are closed. The smoke collecting plate 120 is used to open the corresponding angle according to the instruction of the controller 110 in the steaming stage and the cleaning stage. The check valve blade 130 is used to open the corresponding angle according to the instruction of the controller 110 in the steaming stage and the cleaning stage. The heater 1401 is used to heat the cleaning liquid according to the instruction of the controller 110 in the steaming stage and the cleaning stage. The water pump 1402 is used to pump cleaning liquid into the heater 1401 in the steaming stage and the cleaning stage according to the instructions of the controller 110. The nozzle 1403 is used to spray the cleaning liquid into the range hood in the steaming stage and the cleaning stage according to the instructions of the controller 110. The wind wheel motor 150 is used to operate in the steaming stage and the cleaning stage according to the instructions of the controller 110 and drive the wind wheel to rotate.

[0087] The following will describe in detail a method for automatically cleaning a range hood provided by an embodiment of the present application in conjunction with a specific implementation method. Figure 2 A flow chart of a method for automatically cleaning a range hood provided in an embodiment of the present application, such as Figure 2 As shown, the specific steps are as follows:

[0088] Step 201, during the temperature rising stage, close the smoke collecting plate installed at the air inlet and the check valve blade installed at the air outlet, control the cleaning device to spray cleaning liquid into the range hood, and enter the steaming stage after the cleaning device sprays the cleaning liquid of the first preset temperature for a first preset time.

[0089] In practice, oil stains are usually cleaned more cleanly in hot water. When the range hood is automatically cleaned, in order to ensure that the oil stains can be cleaned clean, the range hood is usually heated before cleaning. The smoke collecting plate is a flap at the air inlet, and the check valve blade is a flap at the air outlet. Since the temperature inside the range hood is basically the lower indoor temperature, in order to ensure that the heating time is shorter, the range hood can close all the smoke collecting plates and check valve blades. Among them, the cleaning device includes a water pump, a heater and a nozzle. The range hood controls the water pump to draw cleaning liquid into the heater, controls the heater to heat the drawn cleaning liquid, and controls the nozzle to spray the heated cleaning liquid into the range hood. Among them, the cleaning liquid can be water. In the heating stage, the heated cleaning liquid is basically used to increase the temperature inside the range hood, so in this stage, the temperature of the cleaning liquid will not be too high. Preferably, the first preset temperature of the cleaning liquid is T1 (95 ± 5) ° C. The technician pre-installs a temperature sensor at the nozzle to detect the temperature of the sprayed cleaning liquid in real time. When it is monitored that the temperature of the cleaning liquid sprayed from the nozzle is greater than T1 within the first preset time period, in order to ensure that the current temperature inside the range hood has met the required temperature for cleaning grease, the first preset time period may be 30S.

[0090] The range hood determines that the current temperature inside the range hood has met the required temperature for cleaning oil stains. The heating stage ends and the steaming stage begins.

[0091] Furthermore, if the temperature of the cleaning fluid sprayed from the nozzle is within the maximum heating time corresponding to the current heater power, and if it cannot be kept constant above T1 within the accumulated first preset time, the end of the heating stage and the start of the next stage can also be determined based on the heating power of the heater and the heating time corresponding to the heating power. The specific steps for determining the end of the heating stage based on the heating power of the heater and the heating time corresponding to the heating power are as follows.

[0092] Step 1: During the heating phase, obtain the current heating power of the heater.

[0093] In the implementation, in the heating stage, in order to make the temperature inside the range hood reach the required temperature to clean the oil stains, the range hood needs to determine the heating time of the heating stage. At the same time, the heating time of the heating stage is related to the heating time of the heater. Therefore, it is necessary to obtain the heating time of the heater first. Because the heating time of the heater is related to the heating power of the heater, the range hood needs to obtain the current heating power of the heater.

[0094] Step 2: In the pre-stored correspondence between the heating power range and the maximum heating time, query the target maximum heating time corresponding to the current heating power.

[0095] In practice, the technicians preheat the heater using each heater power range, and determine the maximum heating time within each heater power range so that the temperature inside the range hood meets the required temperature for cleaning the oil stains. Afterwards, the range hood stores the corresponding relationship between the heating power range and the maximum heating time.

[0096] Table 1

[0097] Heater power P(W) Maximum heating time t(S) ＞1500 60 1200＜P≤1500 82 1000＜P≤1200 96 800＜P≤1000 115 600＜P≤800 145 ≤600 180

[0098] Table 1 shows the corresponding relationship between the heating power range and the maximum heating time. As shown in Table 1, when the heater power is less than or equal to 600W, the maximum heating time required for the heating stage is 180S. When the heater power is greater than 600W and less than or equal to 800W, the maximum heating time required for the heating stage is 145S. When the heater power is greater than 800W and less than or equal to 1000W, the maximum heating time required for the heating stage is 115S. When the heater power is greater than 1000W and less than or equal to 1200W, the maximum heating time required for the heating stage is 96S. When the heater power is greater than 1200W and less than or equal to 1500W, the maximum heating time required for the heating stage is 82S. When the heater power is greater than 1500W, the maximum heating time required for the heating stage is 60S.

[0099] Based on the current heating power of the heater, the range hood queries the target maximum heating time corresponding to the current heating power of the heater in the above corresponding relationship.

[0100] Step 3: If the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

[0101] In practice, during the heating stage, when the range hood detects that the total operating time of the heater reaches the target maximum heating time, it indicates that the current temperature inside the range hood meets the required temperature for cleaning oil stains. Therefore, if the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

[0102] Figure 3 This is a flow chart of a method for heating up a range hood provided in an embodiment of the present application. Figure 3As shown, step 301, start the cleaning function. Step 302, control the heater to heat. Step 303, control the nozzle to start spraying cleaning fluid. Step 304, control the temperature sensor at the nozzle to detect the temperature of the sprayed cleaning fluid in real time. Step 305, determine whether the temperature of the cleaning fluid is greater than the first preset temperature. If so, execute step 306, otherwise execute step 304. Step 306, determine whether the current operating time reaches the maximum heating time corresponding to the heater power. If so, execute step 308, otherwise, execute step 307. Step 307, determine whether the temperature of the cleaning fluid is greater than the first preset temperature during the first preset time. If so, execute step 308, otherwise, execute step 304. Step 308, execution ends.

[0103] Step 202, during the steaming stage, control the cleaning device to spray cleaning liquid steam into the range hood, determine a first opening angle of the smoke collecting plate and a second opening angle of the check valve blade according to the current steam temperature of the cleaning liquid steam, control the smoke collecting plate to open the first opening angle, and control the check valve blade to open the second opening angle, and enter the cleaning stage after the cleaning device sprays cleaning liquid steam of the second preset temperature for a second preset time.

[0104] In implementation, during the steaming stage of the range hood, if the smoke collecting plate at the air inlet and the check valve blade at the air outlet are in an open state, external air can enter the range hood. As a result, the temperature inside the range hood is reduced, and the steaming effect cannot be formed, which leads to poor oil cleaning effect. At the same time, if the smoke collecting plate and the check valve blade are in a completely closed state, due to the high temperature inside the range hood, high air pressure, and high motor speed, noises such as whistles and wind noise will be generated, affecting the user experience. Therefore, during the steaming stage, the range hood controls the cleaning device to spray cleaning liquid steam into the range hood, and determines the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade according to the current steam temperature of the cleaning liquid steam. The range hood controls the smoke collecting plate to open the first opening angle and the check valve blade to open the second opening angle. The range hood enters the cleaning stage after the cleaning device sprays the cleaning liquid steam at the second preset temperature for a second preset time. In order to ensure that the temperature inside the range hood can completely soften the oil, the second preset temperature can be 110℃±5℃.

[0105] As an optional implementation, the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade are determined according to the current steam temperature of the cleaning liquid steam.

[0106] In practice, during the automatic cleaning process of the range hood, if the smoke collecting plate and the check valve blades are all closed, the higher the temperature inside the range hood, the higher the air pressure, which is prone to produce noises such as whistles, affecting users. However, if the smoke collecting plate and the check valve blades are all opened, external air enters the range hood, causing the temperature inside the range hood to drop and failing to soften the oil stains. Therefore, it is necessary to open the smoke collecting plate and the check valve blades to a certain angle while ensuring the temperature inside the range hood and preventing the generation of whistles. In the steaming stage, the water pump is controlled to pump the cleaning liquid into the heater, the heater heats the cleaning liquid to a steam state, and the nozzle is controlled to spray the cleaning liquid steam into the range hood. Therefore, the range hood can determine the first opening angle of the smoke collecting plate and the second opening angle of the check valve blades according to the current steam temperature of the cleaning liquid steam. The specific execution steps are as follows.

[0107] Step 1: In the pre-stored correspondence between the steam temperature range and the opening ratio of the smoke collecting plate, query the first opening ratio corresponding to the current steam temperature.

[0108] In implementation, the technicians determine in advance the opening ratio of the smoke collecting plate in each steam temperature range of the range hood, which can ensure the temperature inside the range hood and prevent the whistle from being generated. After that, the range hood stores the corresponding relationship between the steam temperature range and the opening ratio of the smoke collecting plate. Based on the current steam temperature, the range hood queries the first opening ratio of the smoke collecting plate in the above corresponding relationship.

[0109] For example, when the steam temperature range is 105℃-110℃, the first opening ratio is 1 / 9. When the steam temperature range is 105℃-110℃ for 60S, the first opening ratio can be appropriately increased to 1 / 8. When the steam temperature range is 100℃-105℃, the first opening ratio is 1 / 9. When the steam temperature range is 100℃-105℃ for 60S, the first opening ratio can be appropriately reduced to 1 / 10.

[0110] Step 2: multiplying the first opening ratio by the maximum opening angle of the smoke collecting plate to determine the first opening angle of the smoke collecting plate.

[0111] In implementation, the range hood determines the first opening angle of the smoke collecting plate as the product of the first opening ratio and the preset maximum opening angle of the smoke collecting plate. The maximum opening angle is the opening angle corresponding to when the smoke collecting plate is fully opened. In order to ensure the temperature inside the range hood and prevent the whistle from being generated, preferably, the first opening ratio can be 1 / 10-1 / 8.

[0112] As an optional implementation, the product of the first opening ratio and the maximum opening angle of the smoke collecting plate is determined as the first opening angle of the smoke collecting plate by a formula as follows:

[0113] β=A*βMAX

[0114] Wherein, β represents the first opening angle of the smoke collecting plate, A represents the first opening ratio, and β MAX Indicates the maximum opening angle of the smoke collecting plate.

[0115] For example, when the steam temperature range is [105,110]℃, the first opening angle of the smoke collecting plate is β=1 / 9βmax. When the steam temperature range is [105,110]℃ for 60 consecutive seconds, the first opening angle of the smoke collecting plate can be appropriately increased to β=1 / 8βmax. When the steam temperature range is [100,105]℃, the first opening angle of the smoke collecting plate is β=1 / 9βmax. When the steam temperature range is [100,105]℃ for 60 consecutive seconds, the first opening angle of the smoke collecting plate can be appropriately reduced to β=1 / 10βmax.

[0116] Step three: multiplying the first opening angle by a preset correction coefficient to determine a second opening angle of the check valve blade.

[0117] In practice, when the range hood opens the smoke collecting plate, most of them are pushed by an electric push rod or a small DC motor. The electric push rod or the small DC motor usually uses a simple running time to determine whether the smoke collecting plate is opened to the first opening angle. Therefore, under normal circumstances, the opening angle error of the smoke collecting plate is relatively large. Then, in order to better achieve the steaming effect and avoid excessive steam loss due to the opening angle, the opening angle of the check valve blade is usually reduced. The technicians obtained the preset correction coefficient through a large number of experimental tests. In order to ensure the steaming effect, the preset correction coefficient has a value interval of [0.75, 0.82]. Afterwards, the range hood stores the preset correction coefficient, and determines the product of the first opening angle and the preset correction coefficient as the second opening angle of the check valve blade.

[0118] As an optional implementation, the product of the first opening angle and the preset correction coefficient is multiplied to determine the second opening angle of the check valve blade as follows:

[0119] α=K*β

[0120] Wherein, α represents the second opening angle of the check valve blade, K represents a preset correction coefficient, and β represents the first opening angle of the smoke collecting plate.

[0121] Furthermore, during the steaming stage, the range hood controls the fan motor to operate in an inching working mode.

[0122] In implementation, the wind wheel motor is hard-linked to the wind wheel. In the steaming stage, in order to better soften the oil stains, the wind wheel motor is controlled to rotate, so that the blades of the wind wheel can be evenly sprayed with cleaning liquid. At the same time, in the steaming stage, the wind wheel does not need to rotate too fast. Therefore, the technician can pre-set the inching working mode of the wind wheel motor, and according to the inching working mode, control the wind wheel motor to work within each preset cycle length, the motor runs for the preset inching time, and stops running for the preset stop inching time. Preferably, the preset cycle length is between 11S and 21S, the wind wheel motor runs for 1S, and stops running for 10S to 20S.

[0123] Furthermore, during the automatic cleaning process of the range hood, a water pump is required to pump cleaning liquid for heat preservation and cleaning. The specific steps of pumping cleaning liquid are as follows.

[0124] Step 1: During the steaming stage, when it is detected that the current steam temperature is lower than the second preset temperature, the water pump is controlled to stop pumping the cleaning liquid, and the heater is controlled to continue heating.

[0125] In practice, in the steaming stage, in order to soften the oil stains and ensure the steaming effect, the temperature inside the range hood needs to be kept constant. When it is detected that the current steam temperature is lower than the second preset temperature, the range hood controls the water pump to stop pumping cleaning liquid and controls the heater to continue heating.

[0126] Step two, when it is detected that the current steam temperature is greater than the second preset temperature, stop heating the heater, query the current water pump operation duty cycle corresponding to the current steam temperature in the pre-stored correspondence between the steam temperature range and the water pump operation duty cycle, and control the water pump to pump cleaning fluid based on the current water pump operation duty cycle.

[0127] In implementation, in order to soften the oil stains and ensure the steaming effect, it is necessary to keep the temperature inside the range hood constant. When it is detected that the current steam temperature is greater than the second preset temperature, the range hood stops heating the heater. Among them, the second preset temperature can be set according to the actual situation and is not limited here. The technicians determine in advance the water pump operation duty cycle corresponding to the amount of cleaning liquid pumped in each steam temperature interval for each steam temperature interval inside the range hood, while ensuring that the temperature inside the range hood is constant and meeting the softening of the oil stains. Afterwards, the range hood stores the corresponding relationship between the steam temperature interval and the water pump operation duty cycle. Based on the current steam temperature, the range hood queries the current water pump operation duty cycle of the water pump in the above corresponding relationship. The range hood also controls the water pump to pump cleaning liquid based on the current water pump operation duty cycle. Among them, the water pump operation duty cycle is that in each cleaning liquid pumping cycle, the water pump runs for a preset cleaning liquid pumping time and stops running for a preset cleaning liquid pumping time. Preferably, the water pump pumps the cleaning liquid with a cleaning liquid pumping cycle length of 3S, pumps the cleaning liquid for nS, and stops pumping the cleaning liquid for (3-n)S, where n is a positive number. For example, if the current steam temperature is 95°C, the cleaning liquid is pumped for 0.04S and stopped for 2.96S. If the current steam temperature is 110°C, the cleaning liquid is pumped for 0.23S and stopped for 2.77S.

[0128] Furthermore, if in the steaming stage, the current steam temperature is less than or equal to the second preset temperature within the second preset time, the end of the heating stage and the start of the next stage can also be determined according to the heating power of the heater and the heating time corresponding to the heating power in the heating stage. This has been described in detail above and will not be repeated here.

[0129] Figure 4 This is a flow chart of a method for steaming a range hood provided in an embodiment of the present application. Figure 4 As shown, step 401, control the heater to heat. Step 402, control the water pump to pump cleaning liquid according to the duty cycle of the water pump. Step 403, control the nozzle to start spraying mixed steam. Step 404, control the temperature sensor at the nozzle to detect the temperature of the sprayed mixed steam in real time. Step 405, determine whether the temperature of the mixed steam is greater than the second preset temperature. If so, execute step 406, otherwise, execute step 404. Step 406, determine whether the current operating time reaches the maximum heating time corresponding to the heater power. If so, execute step 408, otherwise, execute step 407. Step 407, determine whether the temperature of the mixed steam is greater than the second preset temperature within the second preset time. If so, execute step 408, otherwise, execute step 404. Step 408, execution ends.

[0130] Step 203, during the cleaning stage, controls the cleaning device to spray cleaning liquid of a third preset temperature into the interior of the range hood, controls the wind wheel motor to operate in a preset working mode, determines a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade according to the current working mode of the wind wheel motor, controls the smoke collecting plate to open to the third opening angle, and controls the check valve blade to open to the fourth opening angle.

[0131] In the implementation, during the cleaning stage, the range hood controls the water pump to pump the cleaning liquid into the heater, the heater heats the cleaning liquid, and controls the nozzle to spray the cleaning liquid of the third preset temperature into the range hood. In order to ensure that the softened and peeled oil stains can be washed away and ensure the cleaning effect, preferably, the third preset temperature is (100±5)℃, so that the sprayed cleaning liquid is in liquid state and the washing force is relatively large. In order to ensure that the softened and peeled oil stains can be thrown away by the wind wheel through centrifugal force and ensure the cleaning effect, the technicians pre-set the working mode of the wind wheel motor. Since the wind wheel motor drives the wind wheel to rotate at a high speed, if the smoke collecting plate and the check valve blades are all closed, a harsh whistle will be generated. Moreover, the wind wheel motor has a high speed, and wind noise will be generated inside the range hood. If the smoke collecting plate and the check valve blades are all opened, the temperature inside the range hood will decrease, and it will be difficult to clean the oil stains. Therefore, the range hood needs to determine the opening angle of the smoke collecting plate and the check valve blade according to the working mode of the wind wheel motor. Therefore, the range hood determines the third opening angle of the smoke collecting plate and the fourth opening angle of the check valve blade according to the current working mode of the fan motor. The range hood controls the smoke collecting plate to open to the third opening angle and the check valve blade to open to the fourth opening angle.

[0132] As an optional implementation, the cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage, and the working mode of the wind wheel motor includes an inching working mode and a continuous working mode. According to the current working mode of the wind wheel motor, the third opening angle of the smoke collecting plate and the fourth opening angle of the check valve blade are determined.

[0133] In practice, due to the special arc-shaped structure of the blades, a single flushing direction cannot achieve effective cleaning. In order to ensure that the oil stains are cleaned, the technicians can divide the cleaning stage into a forward cleaning sub-stage and a reverse cleaning sub-stage. Among them, the forward cleaning sub-stage and the reverse cleaning sub-stage are distinguished by the rotation direction of the motor. Reverse cleaning can not only flush the oil stains at multiple angles, but also the reverse centrifugal force is helpful for the removal of oil stains. During the cleaning process of the range hood, in order to ensure that the oil stains are cleaned, the technicians pre-set the inching working mode and the continuous working mode of the wind wheel motor in the forward cleaning sub-stage and the reverse cleaning sub-stage respectively. Among them, no matter in the forward cleaning sub-stage or the reverse cleaning sub-stage, the wind wheel motor first works in the inching working mode and then in the continuous working mode. For example, in the first third preset time of the forward cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; in the last third preset time of the forward cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode; in the first third preset time of the reverse cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; in the fourth preset time after the reverse cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode. The working modes of the wind rotor motor are different, and the speed of the wind rotor motor and the speed of the wind rotor blades are also different, and the noise generated is also different. Therefore, in different working modes of the wind rotor motor, the opening angles of the smoke collecting plate and the check valve blades are also different. For different working modes, the specific execution steps for determining the opening angles of the smoke collecting plate and the check valve blades are as follows.

[0134] Step 1: If the current cleaning sub-stage is the forward cleaning sub-stage and the current working mode of the wind wheel motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade.

[0135] In implementation, in the forward cleaning sub-stage, when the current working mode of the wind rotor motor is the continuous working mode, the high-speed rotation of the wind rotor motor requires the opening angle of the smoke collecting plate and the check valve blade to be the maximum opening angle, otherwise a harsh noise will be generated. Therefore, if the current cleaning sub-stage is the forward cleaning sub-stage, and the current working mode of the wind rotor motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade. In order to ensure that the oil stains are cleaned, preferably, the range hood is in the forward cleaning sub-stage and the current working mode of the wind rotor motor is the third preset time length of the inching working mode is 60S, and the wind rotor motor usually runs for 1S and stops running for 10S to 20S. Preferably, the range hood is in the forward cleaning sub-stage and the current working mode of the wind rotor motor is the third preset time length of the continuous working mode is 60S, and the speed of the wind rotor motor is (900±10)r / min.

[0136] Step 2: In the pre-stored correspondence between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate, query the second opening ratio corresponding to the current working mode and the current cleaning sub-stage.

[0137] In implementation, the technicians determine the corresponding relationship of the opening ratio of the smoke collecting plate that can ensure the cleaning effect of the oil stains and not generate noise according to each working mode and each cleaning sub-stage of the wind wheel motor. After that, the range hood stores the corresponding relationship between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate. Based on the current working mode and the current cleaning sub-stage, the range hood queries the second opening ratio corresponding to the current working mode and the current cleaning sub-stage in the above corresponding relationship.

[0138] In order to ensure that the oil stains are cleaned, preferably, the range hood is in the reverse cleaning sub-stage and the current working mode of the wind wheel motor is the third preset time of 60S, the wind wheel motor usually runs for 1S and stops running for 10S to 20S. Preferably, the range hood is in the reverse cleaning sub-stage and the current working mode of the wind wheel motor is the fifth preset time of 30S, and the speed of the wind wheel motor is (600±20)r / min.

[0139] Step three: multiplying the second opening ratio by the maximum opening angle of the smoke collecting plate to determine the third opening angle of the smoke collecting plate.

[0140] In implementation, the range hood determines the product of the second opening ratio and the maximum opening angle of the smoke collecting plate as the third opening angle of the smoke collecting plate.

[0141] Step 4: multiply the third opening angle by a preset correction coefficient to determine a fourth opening angle of the check valve blade.

[0142] In implementation, in order to ensure the temperature inside the range hood during the cleaning phase and to prevent noise, the range hood determines the fourth opening angle of the check valve blade as the product of the third opening angle and a preset correction coefficient.

[0143] Figure 5 This is a flow chart of a method for the forward cleaning phase of a range hood provided in an embodiment of the present application. Figure 5As shown, step 501, control the wind wheel motor to start the inching working mode. Step 502, control the heater to heat. Step 503, control the water pump to pump cleaning liquid according to the water pump operation duty cycle. Step 504, control the nozzle to start spraying mixed steam. Step 505, control the temperature sensor at the nozzle to detect the temperature of the sprayed mixed steam in real time. Step 506, determine whether the temperature of the mixed steam is within the preset temperature range, if so, execute step 507, otherwise, execute step 505. Step 507, determine whether the operating time reaches the third preset time, if so, execute step 508, otherwise, execute step 505. Step 508, control the wind wheel motor to start the continuous working mode. Step 509, control the temperature sensor at the nozzle to detect the temperature of the sprayed mixed steam in real time. Step 510, determine whether the temperature of the mixed steam is within the preset temperature range, if yes, execute step 511, otherwise, execute step 509, step 511, determine whether the running time reaches the third preset time, if yes, execute step 512, otherwise, execute step 509. Step 512, execution ends.

[0144] Figure 6 A flow chart of a method for the reverse cleaning phase of a range hood provided in an embodiment of the present application. Figure 6 As shown, step 601, control the wind wheel motor to start the reverse jog working mode. Step 602, control the heater to heat. Step 603, control the water pump to pump cleaning liquid according to the water pump operation duty cycle. Step 604, control the nozzle to start spraying mixed steam. Step 605, control the temperature sensor at the nozzle to detect the temperature of the sprayed mixed steam in real time. Step 606, determine whether the temperature of the mixed steam is within the preset temperature range, if so, execute step 607, otherwise, execute step 605. Step 607, determine whether the running time reaches the third preset time, if so, execute step 608, otherwise, execute step 605. Step 608, control the wind wheel motor to start the continuous working mode. Step 609, control the temperature sensor at the nozzle to detect the temperature of the sprayed mixed steam in real time. Step 610, determine whether the temperature of the mixed steam is within the preset temperature range, if so, execute step 611, otherwise, execute step 609. Step 611, determine whether the running time reaches the fourth preset time, if yes, execute step 612, otherwise, execute step 609. Step 612, execution ends.

[0145] Step 204, after cleaning is completed, close the smoke collecting plate and the check valve blade.

[0146] During implementation, after the automatic cleaning of the range hood is completed, the range hood closes the smoke collecting plate and the check valve blade.

[0147] Furthermore, when the range hood is automatically cleaned, the check valve and the smoke collecting plate are individually controlled to open at a certain angle according to the temperature inside the range hood and the working mode of the fan motor, so as to ensure the temperature inside the range hood while reducing the noise.

[0148] Furthermore, in order to ensure that the temperature inside the range hood can meet the temperature for cleaning oil stains, the first preset temperature in the heating stage is lower than the third preset temperature in the cleaning stage, and the third preset temperature in the cleaning stage is lower than the second preset temperature in the steaming stage.

[0149] Furthermore, the speed of the wind wheel motor is relatively high during the cleaning stage. In order to avoid whistling sound and ensure thorough cleaning, the opening angles of the smoke collecting plate and the check valve blades during the cleaning stage are larger than those during the steaming stage.

[0150] The embodiment of the present application provides a method for automatically cleaning a range hood. When the range hood is automatically cleaned, the opening angles of the smoke collecting plate and the check valve blades are determined and opened according to the temperature inside the range hood and the working mode of the fan motor. This can ensure that the temperature inside the range hood can meet the temperature for cleaning oil stains, and no noise such as whistles and wind noises will be generated. Therefore, while improving the cleaning effect, the noise generation is also reduced.

[0151] It should be understood that although Figures 2 to 6 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figures 2 to 6 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0152] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can refer to each other, and each embodiment focuses on the differences from other embodiments. For related points, please refer to the description of other method embodiments.

[0153] The present application also provides a device for automatically cleaning a range hood, such as Figure 7 As shown, the device comprises:

[0154] The first closing module 701 is used to close the smoke collecting plate and the check valve blade in the temperature rising stage, control the cleaning device to spray cleaning liquid into the range hood, and enter the steaming stage after the cleaning device sprays the cleaning liquid at a first preset temperature for a first preset time.

[0155] The first control module 702 is used to control the cleaning device to spray cleaning liquid steam into the range hood during the steaming stage, determine the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade according to the current steam temperature of the cleaning liquid steam, control the smoke collecting plate to open the first opening angle, and the check valve blade to open the second opening angle, and enter the cleaning stage after the cleaning device sprays the cleaning liquid steam at the second preset temperature for a second preset time.

[0156] The second control module 703 is used to control the cleaning device to spray cleaning liquid of a third preset temperature into the range hood during the cleaning stage, control the wind wheel motor to work according to a preset working mode, determine a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade according to the current working mode of the wind wheel motor, and control the smoke collecting plate to open to the third opening angle and the check valve blade to open to the fourth opening angle;

[0157] The second closing module 704 is used to close the smoke collecting plate and the check valve blade after cleaning is completed.

[0158] As an optional implementation manner, the first control module 702 is specifically configured to:

[0159] In the pre-stored correspondence between the steam temperature range and the opening ratio of the smoke collecting plate, query the second opening ratio corresponding to the current steam temperature;

[0160] The product of the second opening ratio and the maximum opening angle of the smoke collecting plate is determined as the first opening angle of the smoke collecting plate;

[0161] The product of the first opening angle and a preset correction coefficient is determined as the second opening angle of the check valve blade.

[0162] As an optional implementation, the working mode of the wind turbine motor includes an inching working mode and a continuous working mode; wherein, in the inching working mode, within each preset cycle duration, the motor runs for a preset inching duration and stops running for a preset stop inching duration;

[0163] In the steaming stage, the working mode of the wind wheel motor is the inching working mode;

[0164] The cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage. During the first third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the last third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode; during the first third preset time period of the reverse cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the fourth preset time period after the reverse cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode.

[0165] As an optional implementation, the device further includes:

[0166] During the steaming stage, the wind wheel motor is controlled to operate in an inching working mode.

[0167] As an optional embodiment, the cleaning device includes a water pump, a heater and a nozzle, and the method further includes:

[0168] In the heating stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood;

[0169] In the steaming stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid to a steam state, and the nozzle is controlled to spray the cleaning liquid steam into the range hood;

[0170] During the cleaning stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood.

[0171] As an optional implementation, the device further includes:

[0172] In the steaming stage, when it is detected that the current steam temperature is lower than the second preset temperature, the water pump is controlled to stop pumping cleaning liquid, and the heater is controlled to continue heating;

[0173] When it is detected that the current steam temperature is greater than the second preset temperature, the heater is stopped for heating, and the current water pump operation duty cycle corresponding to the current steam temperature is queried in the pre-stored correspondence between the steam temperature range and the water pump operation duty cycle, and the water pump is controlled to pump cleaning fluid based on the current water pump operation duty cycle, wherein the water pump operation duty cycle is that in each cleaning fluid pumping cycle, the water pump runs for the preset cleaning fluid pumping time and stops running for the preset cleaning fluid pumping time.

[0174] As an optional implementation, the cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage, and the working mode of the wind wheel motor includes a jog working mode and a continuous working mode; the second control module 703 is specifically used to:

[0175] If the current cleaning sub-stage is the forward cleaning sub-stage, and the current working mode of the wind wheel motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade;

[0176] Otherwise, in the pre-stored correspondence between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate, query the first opening ratio corresponding to the current working mode and the current cleaning sub-stage;

[0177] The product of the first opening ratio and the maximum opening angle of the smoke collecting plate is determined as the third opening angle of the smoke collecting plate;

[0178] The product of the third opening angle and a preset correction coefficient is determined as a fourth opening angle of the check valve blade.

[0179] As an optional embodiment, the cleaning device includes a heater, and the device also includes:

[0180] In the heating stage, obtaining the current heating power of the heater;

[0181] In the pre-stored correspondence between the heating power range and the maximum heating time, query the target maximum heating time corresponding to the current heating power;

[0182] If the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

[0183] As an optional implementation, the first preset temperature is lower than the third preset temperature, and the third preset temperature is lower than the second preset temperature.

[0184] As an optional implementation, the third opening angle is greater than the first opening angle, and the fourth opening angle is greater than the second opening angle.

[0185] As an optional implementation, the preset correction coefficient ranges from [0.75, 0.82].

[0186] The embodiment of the present application provides an automatic range hood cleaning device. When the range hood is automatically cleaned, the opening angles of the smoke collecting plate and the check valve blades are determined and opened according to the temperature inside the range hood and the working mode of the fan motor. This can ensure that the temperature inside the range hood can meet the temperature for cleaning oil stains, and no noise such as whistles and wind noises will be generated. Therefore, while improving the cleaning effect, the noise generation is also reduced.

[0187] The specific definition of the range hood automatic cleaning device can be found in the definition of the range hood automatic cleaning method above, which will not be repeated here. Each module in the above range hood automatic cleaning device can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0188] In one embodiment, a computer device is provided, such as Figure 8 As shown, it includes a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor implements the above-mentioned method steps for automatic cleaning of the range hood when executing the computer program.

[0189] In one embodiment, a computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for automatic cleaning of a range hood.

[0190] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0191] 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.

[0192] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0193] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0194] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0195] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for automatically cleaning a range hood, characterized in that: The method comprises: In the temperature rising stage, the smoke collecting plate installed at the air inlet and the check valve blade installed at the air outlet are closed, the cleaning device is controlled to spray cleaning liquid into the range hood, and after the cleaning device sprays the cleaning liquid at a first preset temperature for a first preset time, the steaming stage is entered; In the steaming stage, the cleaning device is controlled to spray the cleaning liquid steam into the range hood, and according to the current steam temperature of the cleaning liquid steam, the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade are determined, the smoke collecting plate is controlled to open the first opening angle, and the check valve blade is controlled to open the second opening angle, and after the duration of the cleaning device spraying the cleaning liquid steam of the second preset temperature reaches the second preset duration, the cleaning stage is entered; In the cleaning stage, the cleaning device is controlled to spray cleaning liquid of a third preset temperature into the range hood, the wind wheel motor is controlled to work according to a preset working mode, a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade are determined according to the current working mode of the wind wheel motor, and the smoke collecting plate is controlled to open to the third opening angle and the check valve blade is controlled to open to the fourth opening angle; After cleaning is completed, the smoke collecting plate and the check valve blade are closed.

2. The method according to claim 1, characterized in that The determining, according to the current steam temperature of the cleaning liquid steam, the first opening angle of the smoke collecting plate and the second opening angle of the check valve blade comprises: In the pre-stored correspondence between the steam temperature range and the opening ratio of the smoke collecting plate, query the first opening ratio corresponding to the current steam temperature; The product of the first opening ratio and the maximum opening angle of the smoke collecting plate is determined as the first opening angle of the smoke collecting plate; The product of the first opening angle and a preset correction coefficient is determined as the second opening angle of the check valve blade.

3. The method according to claim 1, characterized in that: The working modes of the wind turbine motor include an inching working mode and a continuous working mode; wherein, in the inching working mode, the motor runs for a preset inching time and stops for a preset stop inching time within each preset cycle time; In the steaming stage, the working mode of the wind wheel motor is the inching working mode; The cleaning stage includes a forward cleaning sub-stage and a reverse cleaning sub-stage. During the first third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the last third preset time period of the forward cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode; during the first third preset time period of the reverse cleaning sub-stage, the working mode of the wind rotor motor is the inching working mode; during the fourth preset time period after the reverse cleaning sub-stage, the working mode of the wind rotor motor is the continuous working mode.

4. The method according to claim 1, characterized in that: The method further comprises: During the steaming stage, the wind wheel motor is controlled to operate in an inching working mode.

5. The method according to claim 1, characterized in that The cleaning device comprises a water pump, a heater and a nozzle, and the method further comprises: In the heating stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood; In the steaming stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid to a steam state, and the nozzle is controlled to spray the cleaning liquid steam into the range hood; During the cleaning stage, the water pump is controlled to pump cleaning liquid into the heater, the heater heats the cleaning liquid, and the nozzle is controlled to spray the heated cleaning liquid into the range hood.

6. The method according to claim 5, characterized in that The method further comprises: In the steaming stage, when it is detected that the current steam temperature is lower than the second preset temperature, the water pump is controlled to stop pumping cleaning liquid, and the heater is controlled to continue heating; When it is detected that the current steam temperature is greater than the second preset temperature, the heater is stopped for heating, and the current water pump operation duty cycle corresponding to the current steam temperature is queried in the pre-stored correspondence between the steam temperature range and the water pump operation duty cycle, and the water pump is controlled to pump cleaning fluid based on the current water pump operation duty cycle, wherein the water pump operation duty cycle is that in each cleaning fluid pumping cycle, the water pump runs for the preset cleaning fluid pumping time and stops running for the preset cleaning fluid pumping time.

7. The method according to claim 3, characterized in that The determining, according to the current working mode of the wind wheel motor, the third opening angle of the smoke collecting plate and the fourth opening angle of the check valve blade comprises: If the current cleaning sub-stage is the forward cleaning sub-stage, and the current working mode of the wind wheel motor is the continuous working mode, the third opening angle of the smoke collecting plate is the maximum opening angle of the smoke collecting plate, and the fourth opening angle of the check valve blade is the maximum opening angle of the check valve blade; Otherwise, in the pre-stored correspondence between the working mode of the wind wheel motor, the cleaning sub-stage and the opening ratio of the smoke collecting plate, query the second opening ratio corresponding to the current working mode and the current cleaning sub-stage; The product of the second opening ratio and the maximum opening angle of the smoke collecting plate is determined as the third opening angle of the smoke collecting plate; The product of the third opening angle and a preset correction coefficient is determined as a fourth opening angle of the check valve blade.

8. The method according to claim 1, characterized in that The cleaning device includes a heater, and the method further includes: In the heating stage, obtaining the current heating power of the heater; In the pre-stored correspondence between the heating power range and the maximum heating time, query the target maximum heating time corresponding to the current heating power; If the total operating time corresponding to the heating stage reaches the target maximum heating time, the steaming stage is entered.

9. The method according to claim 1, characterized in that: The first preset temperature is lower than the third preset temperature, and the third preset temperature is lower than the second preset temperature.

10. The method according to claim 1, characterized in that The third opening angle is greater than the first opening angle, and the fourth opening angle is greater than the second opening angle.

11. The method according to claim 2, characterized in that The preset correction coefficient ranges from [0.75, 0.82].

12. A device for automatically cleaning a range hood, characterized in that: The device comprises: The first closing module is used to close the smoke collecting plate installed at the air inlet and the check valve blade installed at the air outlet during the temperature rising stage, control the cleaning device to spray cleaning liquid into the range hood, and enter the steaming stage after the cleaning device sprays the cleaning liquid at a first preset temperature for a first preset time. a first control module, for controlling the cleaning device to spray cleaning liquid steam into the range hood during the steaming stage, determining a first opening angle of the smoke collecting plate and a second opening angle of the check valve blade according to a current steam temperature of the cleaning liquid steam, controlling the smoke collecting plate to open the first opening angle and the check valve blade to open the second opening angle, and entering the cleaning stage after the duration of the cleaning device spraying cleaning liquid steam at a second preset temperature reaches a second preset duration; a second control module, configured to control the cleaning device to spray cleaning liquid of a third preset temperature into the range hood during the cleaning stage, control the fan motor to operate in a preset working mode, determine a third opening angle of the smoke collecting plate and a fourth opening angle of the check valve blade according to the current working mode of the fan motor, and control the smoke collecting plate to open to the third opening angle and the check valve blade to open to the fourth opening angle; The second closing module is used to close the smoke collecting plate and the check valve blade after cleaning is completed.

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