CN114046549A - Automatic range hood and control method thereof - Google Patents
Automatic range hood and control method thereof Download PDFInfo
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- CN114046549A CN114046549A CN202111340201.2A CN202111340201A CN114046549A CN 114046549 A CN114046549 A CN 114046549A CN 202111340201 A CN202111340201 A CN 202111340201A CN 114046549 A CN114046549 A CN 114046549A
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- range hood
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- 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
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Abstract
The invention relates to the technical field of kitchen appliances, in particular to a free range hood and a control method thereof. The control method of the automatic range hood comprises the following steps that in the first step, after a user is detected to approach the range hood, the range hood enters a pre-starting state; secondly, after the temperature of the workbench is detected to reach a set temperature value, the range hood is started; thirdly, adjusting the exhaust power of the oil smoke according to the smoke concentration information; and fourthly, detecting the temperature reduction of the workbench, judging that cooking is finished after no oil smoke exists, and stopping the operation of the range hood. The automatic range hood is based on the automatic range hood control method. The range hood is automatically opened and closed by detecting the cooking state, the power of the fan is automatically adjusted according to the smoke concentration, manual operation of users is not needed, and the use experience is excellent.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an automatic range hood and a control method thereof.
Background
The oil absorption smoke ventilator is used as the essential kitchen electrical equipment in modern families, so that the pursuit of people in daily life for the quality of three meals a day is met, and the continuous pursuit of people for high-quality life is represented. As a civilian product of a section, oil absorption smoke ventilator is closely related with people's life, however the current most oil absorption smoke ventilator during operation needs the manual opening of user, and all be fixed gear, fixed rotational speed, the regulation of gear needs the user to set up by oneself, this is an operation test to older old man, simultaneously to the more sensitive user of noise, the noise that oil absorption smoke ventilator during operation produced can arouse the user uncomfortable, can bring relatively poor product experience simultaneously and feel.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing range hood is inconvenient to use due to manual operation.
(II) technical scheme
In order to solve the technical problem, the invention provides a control method of an automatic range hood, which comprises the following steps:
the method comprises the following steps that firstly, after a user is detected to approach the range hood, the range hood enters a pre-starting state;
secondly, after the temperature of the workbench is detected to reach a set temperature value, the range hood is started;
thirdly, adjusting the exhaust power of the oil smoke according to the smoke concentration information;
and fourthly, detecting the temperature reduction of the workbench, judging that cooking is finished after no oil smoke exists, and stopping the operation of the range hood.
In an alternative embodiment of the present invention, in the first step, the distance between the user and the range hood is determined by the temperature sensing device and the distance detecting device.
As an optional implementation manner of the present invention, in the fourth step, after the range hood meets the condition of stopping working, before the range hood stops working, the distance between the user and the range hood is detected, if the distance between the user and the range hood is smaller than a predetermined value, the range hood is turned off in a delayed manner, and if the distance between the user and the range hood is larger than the predetermined value, the range hood is turned off immediately.
An automatic range hood based on any one of the automatic range hood control methods is provided with a fan and comprises a human body temperature detection device, a workbench temperature detection device, a smoke detection device and a controller;
the controller is respectively electrically connected with the human body temperature detection device, the workbench temperature detection device, the smoke detection device and the fan;
when the human body temperature detection device detects a user, information is fed back to the controller, and the fan enters a pre-starting state;
the workbench temperature detection device feeds back workbench temperature information to the controller, and the fan is started when the temperature exceeds a preset value T1;
the smoke detection device detects smoke information and feeds back smoke concentration information, and the controller adjusts the rotating speed of the fan according to the smoke concentration;
when the workbench temperature detection device detects that the temperature of the workbench begins to fall, and the smoke detection device detects that no smoke is generated, the controller closes the fan.
As an optional implementation manner of the present invention, the automatic range hood further includes a distance detection device, and when the human body temperature detection device detects a user and the distance detection device detects that the user approaches the automatic range hood to reach an encountered distance, the fan enters a pre-start state.
In an alternative embodiment of the present invention, the controller is configured with a high temperature value T2, and when the worktable temperature detection device detects the high temperature value,
when the temperature of the workbench is not more than T1, the fan is not started;
when the temperature of the workbench is more than T1 and not more than T2, the controller controls the fan to start in a weak gear;
when the temperature of the workbench is higher than T2, the controller controls the fan to start at a strong gear.
As an optional embodiment of the present invention, the human body temperature detecting device includes an infrared temperature detecting probe disposed in front of the automatic range hood.
As an optional embodiment of the present invention, the distance detecting device comprises at least two distance measuring probes respectively disposed at two sides of the automatic range hood.
As an optional implementation manner of the present invention, the distance detection device further includes an adjuster, the adjuster is electrically connected to the controller, and the controller controls the adjuster to select a corresponding sensing gear according to the distance information preliminarily fed back by the distance detection device, so as to perform centralized detection on a target area, and quickly detect specific distance information of a user.
As an optional embodiment of the present invention, the smoke detection device comprises a photosensitive probe disposed below the automatic range hood.
As an alternative embodiment of the present invention, when the table temperature detecting means detects that the table temperature starts to fall, and the smoke detecting means detects that no smoke is generated,
and after the human body temperature detection device detects that no user personnel are around the automatic range hood, the fan immediately stops working.
As an alternative embodiment of the present invention, the automatic range hood further comprises a time delay device,
when the worktable temperature detection device detects that the temperature of the worktable begins to drop and the smoke detection device detects that no smoke is generated,
the human body temperature detection device detects that users are around the automatic range hood, the distance detection device detects that the distance between the users and the automatic range hood is smaller than a preset distance, and the controller controls the fan to be turned off in a delayed mode through the delay device.
As an optional implementation manner of the present invention, the automatic range hood further includes a control panel, and a user may modify the numerical value of each determination index in the controller according to his own needs.
The invention has the beneficial effects that:
the invention provides a control method of an automatic range hood, which comprises the following steps: the method comprises the following steps that firstly, after a user is detected to approach the range hood, the range hood enters a pre-starting state; secondly, after the temperature of the workbench is detected to reach a set temperature value, the range hood is started; thirdly, adjusting the exhaust power of the oil smoke according to the smoke concentration information; and fourthly, detecting the temperature reduction of the workbench, judging that cooking is finished after no oil smoke exists, and stopping the operation of the range hood.
The pre-starting link ensures that most systems are in a shutdown state under a normal state of the range hood, and the service life of the automatic range hood is prolonged; detecting the cooking state and automatically starting the range hood according to the temperature change of the workbench; the power of the range hood is automatically adjusted according to the smoke concentration; according to temperature change, smog condition detection culinary art state, smoke ventilator self-closing. The manual regulation of cooking personnel is not needed, the automatic regulation and control are realized in the whole process, and the operation flow of the range hood is greatly simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic range hood according to an embodiment of the present invention;
fig. 2 is a schematic workflow diagram of an automatic range hood control method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an automatic range hood according to an embodiment of the present invention.
Icon: 1-human body temperature detection device; 2-a workbench temperature detection device; 3-a distance detection device; 4-a fan.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description, and the embodiments and features of the embodiments of the present application may be combined with each other without conflict. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the present invention provides a control method of an automatic range hood:
the method comprises the following steps that firstly, after a user is detected to approach the range hood, the range hood enters a pre-starting state;
secondly, after the temperature of the workbench is detected to reach a set temperature value, the range hood is started;
thirdly, adjusting the exhaust power of the oil smoke according to the smoke concentration information;
and fourthly, detecting the temperature reduction of the workbench, judging that cooking is finished after no oil smoke exists, and stopping the operation of the range hood.
According to one embodiment of the invention, in the first step, the distance between the user and the range hood is jointly determined by the temperature sensing device and the distance detection device 3. And in the fourth step, after the range hood meets the condition of stopping work and before the stop work, detecting the distance between a user and the range hood, if the distance between the user and the range hood is less than a preset value, closing the range hood in a delayed manner, and if the distance between the user and the range hood is more than the preset value, immediately closing the range hood.
Specifically, the automatic range hood is arranged above the cooking workbench. Firstly, real-time monitoring of the temperature around the range hood is required to be kept, when a user approaches, the characteristics of the temperature difference between the human body and the environment are acquired, the distance between the human body and the range hood is further determined, and the human body temperature detection and the distance detection are determined in a double-determining mode, so that the user is ensured to reach the range hood; in this process, the workbench temperature detection device 2 can be set to be in an actual monitoring mode, and the parallel condition that the distance between a detection person and the range hood is pre-started for the range hood is simultaneously carried out, or the workbench temperature detection device 2 is set to be in a normally closed mode, and the workbench temperature detection device 2 is started to run after the user is detected to be close to the range hood. The workbench temperature detection device 2 detects the temperature of the workbench, and when the temperature of the workbench is detected to be higher than a preset value, the user is indicated to start cooking, and the range hood starts to work; here, in order to ensure the cooking state, the smoke state can be added to the starting condition of the range hood, but considering that the smoke detection mainly passes through photosensitive data and the smoke diffusion has instability, the temperature state of the workbench can be used as the starting condition for ensuring that the range hood can be started in time. After the range hood starts to work, according to the detected smoke concentration, the control system freely switches working gears (working power of each gear is different) of the range hood, the range hood is enabled to operate at the lowest power under the condition that the effect of cleaning oil smoke is not influenced, the ultrahigh noise caused by the high-power operation of the range hood can be effectively reduced while the energy is saved, and the use experience of customers is effectively improved. And in the cooking end stage, the cooking end is judged through temperature reduction of the workbench and no oil smoke generation, and in addition, the distance between a user and the range hood is detected again before the range hood stops running by considering working error factors, if the user still stays around the range hood, the range hood is delayed for 3-5min and stopped.
An automatic range hood based on any one of the automatic range hood control methods is provided with a fan 4, and the automatic range hood comprises a human body temperature detection device 1, a workbench temperature detection device 2, a smoke detection device and a controller;
the controller is respectively and electrically connected with the human body temperature detection device 1, the workbench temperature detection device 2, the smoke detection device and the fan 4;
when the human body temperature detection device 1 detects a user, information is fed back to the controller, and the fan 4 enters a pre-starting state;
the workbench temperature detection device 2 feeds back workbench temperature information to the controller, and when the temperature exceeds a preset value T1, the fan 4 is started;
the smoke detection device detects smoke information and feeds back smoke concentration information, and the controller adjusts the rotating speed of the fan 4 according to the smoke concentration;
when the workbench temperature detection device 2 detects that the temperature of the workbench begins to drop and the smoke detection device detects that no smoke is generated, the controller turns off the fan 4.
Specifically, the automatic range hood comprises
A human body temperature sensing detection device, a workbench temperature sensing detection device, a distance detection device 3, a controller, a data storage device, a fan 4 device and a smoke concentration detection device;
the controller is respectively and electrically connected with the human body temperature sensing detection device, the operating platform temperature sensing detection device, the distance detection device 3, the controller, the data storage device, the fan 4 device and the smoke concentration detection device;
the human body temperature sensing detection device is arranged at the front position of the outer surface of the oil absorption smoke exhaust ventilator, and transmits acquired information to the controller by detecting the change characteristic of the difference value of the human body and the ambient temperature, so as to detect whether people are around the oil absorption smoke exhaust ventilator in real time;
the operating platform temperature sensing detection device is positioned at the lower end of the smoke hood, the signal transmission is realized by detecting the difference value between the working temperature of the operating platform and the ambient temperature, the temperature change on the operating platform is detected, and the acquired information is sent to the controller;
the distance detection devices 3 are arranged at two ends of the oil absorption range hood, and are used for realizing signal acquisition by detecting the distance between people around the oil absorption range hood and sending the information to the controller;
the smoke detection device is mainly a smoke sensor, is mainly installed at the lower end of the oil absorption smoke exhaust ventilator and is used for detecting the change characteristics of smoke concentration on the operating table in real time, receiving the change of the smoke concentration through an internal component, converting an optical signal into an electric signal and sending the information to the channel controller.
The human body temperature sensing detection device is generally arranged at the front position of the outer surface of the oil absorption smoke exhaust ventilator and is used for detecting whether people are around the oil absorption smoke exhaust ventilator in real time, when a human body approaches, temperature difference characteristics are generated, so that an internal detection instrument is changed, and human body temperature characteristic information is collected and recorded; meanwhile, the distance detection devices 3 at the two ends of the oil absorption range hood can record the distance between the human body and the range hood, when the human body is close to the oil absorption range hood, the distance range between the human body and the range hood can be recorded, division standard judgment is carried out, induction division is carried out according to the table 1, different induction areas are adopted according to different distance ranges, and data are convenient to recognize and process quickly.
| Grade standard | Range of distances | Inductive signal processing |
| A | 0-30cm | First-level induction gear |
| B | 30-60cm | Two-stage induction gear |
| C | 60-100cm | Three-stage induction gear |
| D | >100cm | Out of sensing range |
TABLE 1
When the above two kinds of characteristic information are both in conformity, the controller can detect the change of the temperature of the workbench area through the operation table temperature detector below the range hood at the same time, if the temperature of the operation table below the range hood changes due to heating, and the temperature setting standard of the table 2 is satisfied. The controller will send an instruction to the fan 4 to start the operation of the range hood, otherwise, the range hood is not started. Generally, when the temperature of the operation table is equal to room temperature, no gas is combusted, and the smoke exhaust ventilator is not started; when the temperature of the operation table exceeds the room temperature and the gas is burnt, no oil smoke is generated when the temperature in the pot is less than 60 ℃, and the oil smoke exhaust machine can be started. The serial condition can avoid control obstacles caused by misjudgment; when the gear temperature is between 60 and 90 ℃, the fan 4 is started at a weak gear initially, and when the gear temperature is higher than 90 ℃, the fan 4 is started at a strong gear.
TABLE 2
The smoke detection device can carry out concentration standard judgment according to smoke below the oil absorption smoke exhaust ventilator in the table 3, when the smoke concentration is less than 1mg/m3, the core device can transmit information to the fan 4 device, and the fan 4 selects an R1 gear to operate; when the smoke concentration below the range hood is higher and higher, the smoke detection device can feed instant acquisition information back to the controller, and the self regulation and control of the rotating speed of the range hood are realized according to the characteristics of the table 3.
| Grade standard | Range of concentration | Signal processing decision |
| a | <＝1mg/m3 | Four-stage response-R1 Gear |
| b | 1-3mg/m3 | Three-stage response-gear R2 |
| c | 3-5mg/m3 | Two-stage response-R3 gear |
| d | >＝5mg/m3 | First order response-R4 Gear |
TABLE 3
When the smoke concentration below the range hood is reduced to a certain amount, the smoke detection device can transmit information to the controller, and when the rotating speed of the fan 4 still keeps a high rotating speed, the controller simultaneously receives the rotating speed information of the fan 4 fed back by the rotating speed control device, comprehensive comparison is carried out, the rotating speed characteristic of the fan 4 is adjusted in real time, response is ensured to be timely, rapid control is carried out, and the influence of noise on a human body is reduced.
When the operation of personnel is finished, the temperature below the operation table begins to drop and changes, and no smoke is generated, the rotating speed of the smoke exhaust ventilator can be automatically reduced to the minimum, and if the personnel is still in a range appointed by the distance from the smoke exhaust ventilator, the smoke exhaust ventilator can automatically rotate for 5 minutes at the minimum and then stops running; if personnel surpass appointed regional within range, also can not detect human temperature characteristic, smoke ventilator stops the operation immediately, so can avoid personnel because of forgetting the smoke ventilator idle running that causes, reach the purpose of power saving simultaneously.
In addition, in order to further reduce the physical and psychological damage of noise to people, a layer of sound insulation sponge is applied to the smoke hood of the range hood, and the purposes of strengthening the sealing performance of a structural device, preventing the sound generated by negative pressure and absorbing part of pneumatic noise are achieved.
According to an embodiment of the present invention, the automatic range hood further includes a distance detection device 3, and when the human body temperature detection device 1 detects a user and the distance detection device 3 detects that the user approaches the automatic range hood to reach an encountered distance, the fan 4 enters a pre-start state.
According to an embodiment of the invention, a high temperature value T2 is set in the controller, when the worktable temperature detecting device 2 detects,
when the temperature of the workbench is not more than T1, the fan 4 is not started;
when the temperature of the workbench is more than T1 and not more than T2, the controller controls the fan 4 to start at a weak gear;
when the temperature of the workbench is higher than T2, the controller controls the fan 4 to start at a strong gear.
According to an embodiment of the present invention, the human body temperature detecting device 1 includes an infrared temperature detecting probe disposed in front of the automatic range hood.
According to an embodiment of the present invention, the distance detection device 3 comprises at least two distance measurement probes, which are respectively arranged on two sides of the automatic range hood, and the distance measurement probes are respectively arranged on two sides of the automatic range hood, and the sensing lines are overlapped in a staggered manner, so that the measured position information is more accurate.
According to an embodiment of the present invention, the distance detection device 3 further includes an adjuster, the adjuster is electrically connected to the controller, and the controller controls the adjuster to select a corresponding sensing gear according to the distance information preliminarily fed back by the distance detection device 3, so as to perform centralized detection on a target area, and quickly detect specific distance information of a user.
According to one embodiment of the invention, the smoke detection device comprises a photosensitive probe disposed below the automatic range hood.
According to one embodiment of the present invention, when the table temperature detection means 2 detects that the table temperature starts to fall, and the smoke detection means detects that no smoke is generated,
after the human body temperature detection device 1 detects that no user exists around the automatic range hood, the fan 4 immediately stops working;
automatic smoke ventilator still includes time delay unit, works as workstation temperature-detecting device 2 detects the workstation temperature and begins to descend, just when smoke-detecting device detects no smoke and produces, human temperature-detecting device 1 detects there is the user around the automatic smoke ventilator, just distance-detecting device 3 detects the user apart from automatic smoke ventilator distance is less than the predetermined distance, the controller passes through time delay unit control 4 time delay of fan are shut down.
According to one embodiment of the invention, the automatic range hood further comprises a control panel, and a user can modify the numerical value of each judgment index in the controller according to the requirement of the user.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (13)
1. A control method of an automatic range hood is characterized in that:
the method comprises the following steps that firstly, after a user is detected to approach the range hood, the range hood enters a pre-starting state;
secondly, after the temperature of the workbench is detected to reach a set temperature value, the range hood is started;
thirdly, adjusting the exhaust power of the oil smoke according to the smoke concentration information;
and fourthly, detecting the temperature reduction of the workbench, judging that cooking is finished after no oil smoke exists, and stopping the operation of the range hood.
2. The control method of the automatic hood according to claim 1, wherein in the first step, the distance between the user and the hood is determined by the temperature sensing device and the distance detecting device (3).
3. The control method of the automatic range hood according to claim 1, wherein in the fourth step, after the range hood meets the condition of stopping working, before the range hood stops working, the distance between a user and the range hood is detected, if the distance between the user and the range hood is smaller than a preset value, the range hood is closed in a delayed mode, and if the distance between the user and the range hood is larger than the preset value, the range hood is closed immediately.
4. An automatic range hood based on the control method of any one of the automatic range hoods in claims 1 to 3, which is provided with a fan (4), and is characterized by comprising a human body temperature detection device (1), a workbench temperature detection device (2), a smoke detection device and a controller;
the controller is respectively and electrically connected with the human body temperature detection device (1), the workbench temperature detection device (2), the smoke detection device and the fan (4);
when the human body temperature detection device (1) detects a user, information is fed back to the controller, and the fan (4) enters a pre-starting state;
the workbench temperature detection device (2) feeds back workbench temperature information to the controller, and when the temperature exceeds a preset value T1, the fan (4) is started;
the smoke detection device detects smoke information and feeds back smoke concentration information, and the controller adjusts the rotating speed of the fan (4) according to the smoke concentration;
when the workbench temperature detection device (2) detects that the temperature of the workbench begins to drop and the smoke detection device detects that no smoke is generated, the controller closes the fan (4).
5. The automatic range hood according to claim 4, further comprising a distance detection device (3), wherein the fan (4) enters a pre-start state when the human body temperature detection device (1) detects a user and the distance detection device (3) detects that the user approaches the automatic range hood to an encountered distance.
6. The automatic hood according to claim 4, wherein a high temperature value T2 is set in the controller, and when the workbench temperature detecting device (2) detects,
when the temperature of the workbench is not more than T1, the fan (4) is not started;
when the temperature of the workbench is more than T1 and not more than T2, the controller controls the fan (4) to start at a weak gear;
when the temperature of the workbench is more than T2, the controller controls the fan (4) to start at a strong gear.
7. The automatic range hood according to claim 4, wherein the human body temperature detecting means (1) comprises an infrared temperature detecting probe disposed in front of the automatic range hood.
8. Automatic extractor hood according to claim 5, characterized in that said distance detection means (3) comprise at least two ranging probes, one on each side of said automatic extractor hood.
9. The automatic range hood according to claim 5, wherein the distance detection device (3) further comprises an adjuster, the adjuster is electrically connected with the controller, and the controller controls the adjuster to select a corresponding induction gear through the distance information preliminarily fed back by the distance detection device (3) so as to perform centralized detection on a target area and quickly detect specific distance information of users.
10. The automatic range hood of claim 4, wherein the smoke detection device comprises a light sensitive probe disposed below the automatic range hood.
11. The automatic hood according to claim 4, wherein when the table temperature detecting means (2) detects that the table temperature starts to fall and the smoke detecting means detects that no smoke is generated,
and after the human body temperature detection device (1) detects that no user exists around the automatic range hood, the fan (4) stops working immediately.
12. The automatic range hood of claim 5, further comprising a time delay device,
when the worktable temperature detection device (2) detects that the temperature of the worktable begins to drop and the smoke detection device detects that no smoke is generated,
the human body temperature detection device (1) detects that users are around the automatic range hood, the distance detection device (3) detects that the distance between the users and the automatic range hood is smaller than a preset distance, and the controller controls the fan (4) to be turned off in a delayed mode through the delay device.
13. The automatic range hood of claim 4, further comprising a control panel, wherein a user can modify the numerical value of each determination index in the controller according to his or her needs.
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| CN202111340201.2A CN114046549A (en) | 2021-11-12 | 2021-11-12 | Automatic range hood and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440281A (en) * | 2022-03-01 | 2022-05-06 | 杭州老板电器股份有限公司 | Control method and control device of range hood and range hood |
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- 2021-11-12 CN CN202111340201.2A patent/CN114046549A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440281A (en) * | 2022-03-01 | 2022-05-06 | 杭州老板电器股份有限公司 | Control method and control device of range hood and range hood |
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