CN113109070A - Oil stain detection method and device and range hood - Google Patents
Oil stain detection method and device and range hood Download PDFInfo
- Publication number
- CN113109070A CN113109070A CN202110585013.XA CN202110585013A CN113109070A CN 113109070 A CN113109070 A CN 113109070A CN 202110585013 A CN202110585013 A CN 202110585013A CN 113109070 A CN113109070 A CN 113109070A
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- range hood
- target
- fan
- oil stain
- time length
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 239000006233 lamp black Substances 0.000 claims description 11
- 238000011109 contamination Methods 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 7
- 239000003517 fume Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Abstract
The application relates to an oil stain detection method and device and a range hood. The method is applied to a range hood, wherein a fan is arranged in the range hood, and the method comprises the following steps: acquiring target time length required by the fan to reach a second target rotating speed from a first target rotating speed; and comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value, and judging whether the range hood is in an oil stain state. By the adoption of the oil fume exhaust device, whether the oil fume exhaust machine reaches an oil fume state or not can be automatically judged, so that the oil fume exhaust effect of the oil fume exhaust machine is prevented from being influenced when oil fume is not cleaned timely.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, in particular to an oil stain detection method, an oil stain detection device and a range hood.
Background
At present, the range hood on the market gradually becomes the standard matching function of the mainstream range hood due to the good user experience of the self-cleaning function. After the range hood is used for a period of time, a user can manually start the self-cleaning function of the range hood to clean oil stains on the range hood. However, in the prior art, a user usually determines whether the oil stain of the range hood meets the standard of cleaning according to the judgment of the user, so that the oil stain can not be cleaned in time, and the oil smoke suction and exhaust effect of the range hood is affected. Therefore, a method for detecting oil stains is needed.
Disclosure of Invention
In view of the above, it is necessary to provide a method and a device for detecting oil contamination, and a range hood.
In a first aspect, a method for detecting oil stains is provided, the method is applied to a range hood, a fan is arranged in the range hood, and the method comprises the following steps:
acquiring target time length required by the fan to reach a second target rotating speed from a first target rotating speed;
and comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value, and judging whether the range hood is in an oil stain state.
As an optional implementation manner, when the first target rotation speed is greater than the second target rotation speed, comparing a difference between the target time length and a prestored reference time length with a prestored cleaning threshold value, and determining whether the range hood is in an oil stain state includes:
and if the ratio of the target duration to the reference duration is less than or equal to the cleaning threshold, judging that the range hood is in an oil stain state.
As an optional implementation manner, when the first target rotation speed is less than the second target rotation speed, comparing a difference between the target time length and a prestored reference time length with a prestored cleaning threshold value, and determining whether the range hood is in an oil stain state includes:
and if the ratio of the target duration to the reference duration is greater than or equal to the cleaning threshold, judging that the range hood is in an oil stain state.
As an optional implementation, the method further comprises:
and when the range hood leaves a factory or after self-cleaning, acquiring the time length required by the fan when the first target rotating speed reaches the second target rotating speed as the reference time length.
As an optional implementation, the method further comprises:
and responding to a reference time length setting instruction input by a user, and setting the reference time length.
As an optional implementation, the method further comprises:
and if the range hood is in an oil stain state, the range hood is subjected to self-cleaning.
In a second aspect, an oil stain detection device is provided, the device is applied to a range hood, the device includes: a memory on which a computer program is stored that is executable on a processor, and a processor, wherein the processor implements the steps of the method of any one of the first aspect when executing the computer program.
In a third aspect, a range hood is provided, wherein a fan, a self-cleaning device and the oil stain detection device are arranged in the range hood.
The embodiment of the application provides an oil stain detection method, an oil stain detection device and a range hood, wherein the method is applied to the range hood, a fan is arranged in the range hood, and the method comprises the following steps: firstly, the range hood obtains the target time length required by the fan to reach the second target rotating speed from the first target rotating speed. And then, comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value by the range hood, and judging whether the range hood is in an oil stain state or not. Like this, when adsorbing more oil smoke on the fan in the lampblack absorber, can seriously influence the principle of the rotational speed of fan, this application embodiment can judge automatically whether the lampblack absorber reaches the greasy dirt state to prevent that the greasy dirt from clearing up untimely, influencing the oil smoke of lampblack absorber and inhaling and arrange the effect.
Drawings
Fig. 1 is a schematic structural diagram of a range hood provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a range hood provided in an embodiment of the present application;
fig. 3 is a flowchart of an oil contamination detection method according to an embodiment of the present application;
fig. 4 is a line diagram illustrating an example of an oil contamination detection method according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an oil contamination detection apparatus provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a range hood provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1 to 2, an embodiment of the application provides a method for detecting oil contamination, which can be applied to a range hood, and specifically, can be applied to a main controller in the range hood. The range hood comprises a range hood main body 110, a fan 120, a self-cleaning device 130, a frequency conversion controller 140 and a main controller 150. The fan is arranged in the range hood main body and used for sucking and exhausting oil smoke in the range hood main body to the flue; the self-cleaning device is arranged in the range hood main body and is used for cleaning the oil smoke adsorbed to the fan and the inside of the range hood main body; the main controller is connected with the fan through the variable frequency controller and is used for controlling the rotating speed of the fan through the variable frequency controller so as to judge whether the range hood is in an oil smoke state or not; the main controller is connected with the self-cleaning device and used for controlling the self-cleaning device to clean the range hood when the range hood is detected to be in an oil smoke state. The self-cleaning apparatus includes a water pump 131 and a PTC (Positive Temperature Coefficient) heater 132. The PTC heater is used for heating the oil smoke absorbed in the fan and the inner part of the range hood main body; and the water pump is used for washing the heated oil fume. Optionally, the range hood further comprises a lighting device 160 connected with the main controller.
The method for detecting oil contamination provided in the embodiments of the present application will be described in detail below with reference to specific embodiments, as shown in fig. 3, the specific steps are as follows:
step 301, obtaining a target time length required by the fan to reach a second target rotating speed from a first target rotating speed.
In the implementation, when adsorbing more oil smoke on the fan in the lampblack absorber, can seriously influence the rotational speed of fan. This application embodiment is based on above-mentioned theory, through detecting the influence degree of the adsorbed oil smoke on the fan to the rotational speed, judges whether the lampblack absorber needs to wash. Based on this, when the lampblack absorber needs to be subjected to oil smoke detection, the main control can obtain the target duration required by the fan when the first target rotating speed reaches the second target rotating speed. The adsorption of the oil smoke on the fan can not only influence the time required by the fan from low rotating speed to high rotating speed, but also influence the time required by the fan from high rotating speed to low rotating speed. Therefore, the embodiment of the present application is introduced in two different detection manners, which are specifically as follows:
mode one (from low speed to high speed): firstly, when the main controller controls the fan to reach a first target rotating speed through the variable frequency controller, the main controller starts timing. Subsequently, when the main controller continues to control the fan to increase the rotating speed to a second target rotating speed through the variable frequency controller, the main controller finishes timing. At the moment, the main controller obtains the target time length required by the fan when the first target rotating speed reaches the second target rotating speed. For example, as shown in fig. 4, the first target rotation speed is 0rpm (Revolutions Per Minute), the second target rotation speed is 200rpm, and the target period is T1.
Mode two (from high speed to low speed): firstly, when the main controller controls the fan to reach a first target rotating speed through the variable frequency controller, the main controller starts timing. Subsequently, the main controller controls the fan to stop acting through the variable frequency controller, and when the fan gradually reduces the rotating speed to a second target rotating speed based on inertia, the main controller finishes timing. At the moment, the main controller obtains the target time length required by the fan when the first target rotating speed reaches the second target rotating speed. For example, as shown in FIG. 4, the first target speed is 200rpm, the second target speed is 0rpm, and the target duration is T2.
Optionally, the main controller may measure a time required for the fan to reach another speed from a certain speed for a plurality of times, and take an average value of the measured time as a target time.
And 302, comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value, and judging whether the range hood is in an oil stain state.
In an implementation, the main controller may store the reference time length and the washing threshold value in advance. The reference duration can be set by a user, or can be obtained when the range hood leaves a factory or after self-cleaning, and the specific processing procedure for setting the reference duration by the user and the processing procedure for obtaining the reference duration are described later, which is not described herein again; the cleaning threshold may be set by a technician according to experience or actual conditions, and the embodiments of the present application are not limited. After the main controller obtains the target duration, the difference between the target duration and the reference duration can be further compared with a cleaning threshold value, and whether the range hood is in an oil stain state or not is judged. The first target rotation speed and the second target rotation speed corresponding to the target duration include two modes. Correspondingly, the main controller compares the difference between the target duration and the reference duration with the cleaning threshold value, and judges whether the range hood is in an oil stain state or not, wherein the two modes are specifically as follows:
in the first mode (corresponding to the step 301 from low rotation speed to high rotation speed), the processing procedure is as follows: and when the first target rotating speed is less than the second target rotating speed, if the ratio of the target time length to the reference time length is greater than or equal to the cleaning threshold value, the range hood is judged to be in an oil stain state.
In implementation, the more oil smoke adsorbed on the fan, the longer the target time period for the fan to reach the second target rotating speed from the first target rotating speed when the fan rotates from the low rotating speed to the high rotating speed. Therefore, the main controller can calculate the ratio of the target duration to the reference duration, if the ratio is greater than or equal to the cleaning threshold, the situation that the oil smoke adsorbed on the fan reaches the state needing to be cleaned is indicated, and the main controller can judge that the range hood is in an oil stain state. If the ratio is smaller than the cleaning threshold value, the situation that the oil smoke adsorbed on the fan does not reach the state needing cleaning is indicated, and the main controller can judge that the range hood is in a cleaning state. As shown in fig. 4, the target time period in the oil-stained state is T1, and the reference time period in the cleaning state is L1. The main controller compares the ratio of the target duration to the reference duration with a cleaning threshold, namely when T1/L1 is more than or equal to c, the oil smoke adsorbed on the fan reaches a state needing cleaning, and the main controller can judge that the range hood is in an oil stain state. If the ratio is smaller than the cleaning threshold value, the situation that the oil smoke adsorbed on the fan does not reach the state needing cleaning is indicated, and the main controller can judge that the range hood is in a cleaning state.
In the second mode (corresponding to the step 301 from high rotation speed to low rotation speed), the processing procedure is as follows: and when the first target rotating speed is greater than the second target rotating speed, if the ratio of the target time length to the reference time length is less than or equal to the cleaning threshold value, the range hood is judged to be in an oil stain state.
In implementation, the more oil smoke adsorbed on the fan, the shorter the target time period required for the fan to reach the second target rotation speed from the first target rotation speed when the fan rotates from a high rotation speed to a low rotation speed. Therefore, the main controller can calculate the ratio of the target duration to the reference duration, if the ratio is smaller than or equal to the cleaning threshold, the situation that the oil smoke adsorbed on the fan reaches the state needing to be cleaned is indicated, and the main controller can judge that the range hood is in an oil stain state. If the ratio is larger than the cleaning threshold value, the situation that the oil smoke adsorbed on the fan does not reach the state needing cleaning is indicated, and the main controller can judge that the range hood is in a cleaning state. As shown in fig. 4, the target time period in the oil-stained state is T2, and the reference time period in the cleaning state is L2. The main controller compares the ratio of the target duration to the reference duration with a cleaning threshold, namely when the T2/L2 is not more than c, the oil smoke adsorbed on the fan reaches a state needing cleaning, and the main controller can judge that the range hood is in an oil stain state. If the ratio is larger than the cleaning threshold value, the situation that the oil smoke adsorbed on the fan does not reach the state needing cleaning is indicated, and the main controller can judge that the range hood is in a cleaning state.
The first target rotation speed and the second target rotation speed corresponding to the target duration include two modes. Correspondingly, when the range hood leaves a factory or after self-cleaning, the range hood acquires the time length required by the fan to reach the second target rotating speed from the first target rotating speed, and the mode of the time length as the reference is also divided into two modes, specifically as follows:
in the first mode (corresponding to the step 301 from low rotation speed to high rotation speed), the processing procedure is as follows: when the range hood leaves a factory or is cleaned, the main controller controls the fan to reach a first target rotating speed through the variable frequency controller, and the main controller starts timing. Subsequently, when the main controller continues to control the fan to increase the rotating speed to a second target rotating speed through the variable frequency controller, the main controller finishes timing. At the moment, the main control obtains the reference time length required by the fan when the first target rotating speed reaches the second target rotating speed. For example, as shown in FIG. 4, the first target rotation speed is 0rpm, the second target rotation speed is 200rpm, and the reference time period is L1.
In the second mode (corresponding to the step 301 from high rotation speed to low rotation speed), the processing procedure is as follows: when the range hood leaves a factory or is cleaned, the main controller controls the fan to reach a first target rotating speed through the variable frequency controller, and the main controller starts timing. Subsequently, the main controller controls the fan to stop acting through the variable frequency controller, and when the fan gradually reduces the rotating speed to a second target rotating speed based on inertia, the main controller finishes timing. At the moment, the main control obtains the reference time length required by the fan when the first target rotating speed reaches the second target rotating speed. For example, as shown in FIG. 4, the first target rotation speed is 200rpm, the second target rotation speed is 0rpm, and the reference time period is L2.
Optionally, as shown in fig. 4: to reduce the error, the main controller may determine a product of a third target rotation speed to which the fan is driven and a prestored first rotation speed ratio as the first target rotation speed, and determine a product of the third target rotation speed and a prestored second rotation speed ratio as the second target rotation speed. For example, the main controller drives the fan to 200rpm, the first rotation ratio is 0.8, the second rotation ratio is 0.2, the first target rotation speed is 200 × 0.8 — 160, and the second target rotation speed is 200 × 0.2 — 40.
Optionally, the processing procedure of setting the reference duration by the user is to set the reference duration in response to a reference duration setting instruction input by the user.
In implementation, when the user needs to set the reference time length, the user can click a button for setting the reference time length in a control interface of the range hood. Correspondingly, an input interface of the reference time length can be displayed in a control interface of the range hood. Thereafter, the user may input the reference time length in the input interface of the reference time length and click the confirm button. The range hood can respond to a reference time length setting instruction input by a user to set a reference time length.
Optionally, if the range hood is in an oil stain state, the range hood is self-cleaned.
In implementation, if the range hood is in an oil stain state, the main controller can clean the range hood through the self-cleaning device.
The embodiment of the application provides an oil stain detection method, which is applied to a range hood, wherein a fan is arranged in the range hood, and the method comprises the following steps: firstly, the range hood obtains the target time length required by the fan to reach the second target rotating speed from the first target rotating speed. And then, comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value by the range hood, and judging whether the range hood is in an oil stain state or not. Like this, when adsorbing more oil smoke on the fan in the lampblack absorber, can seriously influence the principle of the rotational speed of fan, this application embodiment can judge automatically whether the lampblack absorber reaches the greasy dirt state to prevent that the greasy dirt from clearing up untimely, influencing the oil smoke of lampblack absorber and inhaling and arrange the effect.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
The embodiment of the application still provides an greasy dirt detection device, as shown in fig. 5, the device is applied to the lampblack absorber, and the device includes: the oil stain detection method comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the oil stain detection method is characterized in that the steps of the oil stain detection method are realized when the processor executes the computer program.
The embodiment of the application also provides a range hood, and as shown in fig. 6, a fan 610, a self-cleaning device 620 and the oil stain detection device 630 are arranged in the range hood.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. 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. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The oil stain detection method is characterized by being applied to a range hood, wherein a fan is arranged in the range hood, and the method comprises the following steps:
acquiring target time length required by the fan to reach a second target rotating speed from a first target rotating speed;
and comparing the difference between the target duration and the prestored reference duration with a prestored cleaning threshold value, and judging whether the range hood is in an oil stain state.
2. The oil stain detection method according to claim 1, wherein when the first target rotation speed is greater than the second target rotation speed, the comparing the difference between the target time length and a prestored reference time length with a prestored cleaning threshold value to determine whether the range hood is in an oil stain state comprises:
and if the ratio of the target duration to the reference duration is less than or equal to the cleaning threshold, judging that the range hood is in an oil stain state.
3. The oil stain detection method according to claim 1, wherein when the first target rotation speed is less than the second target rotation speed, the comparing the difference between the target time length and a prestored reference time length with a prestored cleaning threshold value to determine whether the range hood is in an oil stain state comprises:
and if the ratio of the target duration to the reference duration is greater than or equal to the cleaning threshold, judging that the range hood is in an oil stain state.
4. The oil contamination detection method according to claim 1, further comprising:
and when the range hood leaves a factory or after self-cleaning, acquiring the time length required by the fan when the first target rotating speed reaches the second target rotating speed as the reference time length.
5. The oil contamination detection method according to claim 1, further comprising:
and responding to a reference time length setting instruction input by a user, and setting the reference time length.
6. The oil contamination detection method according to claim 1, further comprising:
and if the range hood is in an oil stain state, the range hood is subjected to self-cleaning.
7. The utility model provides an greasy dirt detection device, its characterized in that, the device is applied to the lampblack absorber, the device includes: memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 6.
8. A range hood is characterized in that a fan, a self-cleaning device and the oil stain detection device according to claim 7 are arranged in the range hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585013.XA CN113109070A (en) | 2021-05-27 | 2021-05-27 | Oil stain detection method and device and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585013.XA CN113109070A (en) | 2021-05-27 | 2021-05-27 | Oil stain detection method and device and range hood |
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| Publication Number | Publication Date |
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| CN113109070A true CN113109070A (en) | 2021-07-13 |
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| CN202110585013.XA Pending CN113109070A (en) | 2021-05-27 | 2021-05-27 | Oil stain detection method and device and range hood |
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| JP2005241093A (en) * | 2004-02-25 | 2005-09-08 | Matsushita Electric Ind Co Ltd | Ventilation air blower |
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| CN111351093A (en) * | 2020-04-28 | 2020-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, cleaning method and device thereof, and storage medium |
| CN112228933A (en) * | 2020-10-14 | 2021-01-15 | 珠海格力电器股份有限公司 | Control method and device of range hood, range hood system and processor |
| CN112283775A (en) * | 2020-10-28 | 2021-01-29 | 珠海格力电器股份有限公司 | Range hood, range hood cleaning method and device and storage medium |
-
2021
- 2021-05-27 CN CN202110585013.XA patent/CN113109070A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005241093A (en) * | 2004-02-25 | 2005-09-08 | Matsushita Electric Ind Co Ltd | Ventilation air blower |
| US20090323490A1 (en) * | 2008-06-25 | 2009-12-31 | Teac Corporation | Optical disk device and optical disk processing system having optical disk device |
| CN110887080A (en) * | 2019-11-12 | 2020-03-17 | 华帝股份有限公司 | Self-cleaning control method and range hood |
| CN111351093A (en) * | 2020-04-28 | 2020-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, cleaning method and device thereof, and storage medium |
| CN112228933A (en) * | 2020-10-14 | 2021-01-15 | 珠海格力电器股份有限公司 | Control method and device of range hood, range hood system and processor |
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