CN112071042A - Range hood monitoring method, device and equipment and range hood - Google Patents
Range hood monitoring method, device and equipment and range hood Download PDFInfo
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- CN112071042A CN112071042A CN202010920826.5A CN202010920826A CN112071042A CN 112071042 A CN112071042 A CN 112071042A CN 202010920826 A CN202010920826 A CN 202010920826A CN 112071042 A CN112071042 A CN 112071042A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
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Abstract
The application relates to a range hood monitoring control method, a device and equipment and a range hood. The method comprises the following steps: the method comprises the steps of obtaining a first pressure value of a filtering front side and a second pressure value of a filtering rear side of a dynamic network of the range hood, calculating according to the first pressure value, the second pressure value and standard pressure loss to obtain a loss rate, sending a reminding instruction to an information reminding device when the loss rate is larger than or equal to a preset loss rate threshold value, and enabling the reminding instruction to be used for controlling the information reminding device to send out prompt information for cleaning the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
Description
Technical Field
The application relates to the technical field of kitchen equipment, in particular to a range hood monitoring and controlling method, device and equipment and a range hood.
Background
The kitchen is an important activity area of family members, and when cooking food, the kitchen inevitably produces a large amount of oil smoke, and in order to guarantee the cleanness and the health of the kitchen, range hood has become the essential life electrical apparatus in kitchen. The range hood can be called as a range hood for short, can collect oil smoke in a kitchen and then intensively discharge the collected oil smoke to the outside, and plays a role in keeping the kitchen clean.
The range hood generally comprises a dynamic net, wherein the dynamic net is a dynamic rotating net arranged at an air inlet of a volute of the range hood, and oil stains and dust in gas flowing through the dynamic net are intercepted through high-speed rotation. Traditional lampblack absorber is when using, because the lampblack absorber belongs to the mode of negative pressure air inlet, a large amount of grease and dust in the air are by the adhesion on it when dynamic net, influence the air inlet efficiency of dynamic net, probably cause the lampblack absorber functional failure even, and traditional lampblack absorber uses the reliability low.
Disclosure of Invention
The invention provides a range hood monitoring and controlling method, a range hood monitoring and controlling device, equipment and a range hood aiming at the problem of low use reliability of a traditional range hood.
A range hood monitoring method comprises the following steps:
acquiring a first pressure value of a filtering front side and a second pressure value of a filtering rear side of a dynamic net of the range hood;
calculating according to the first pressure value, the second pressure value and standard pressure loss to obtain a loss rate;
when the loss rate is greater than or equal to a preset loss rate threshold value, sending a reminding instruction to an information reminding device; the reminding instruction is used for controlling the information reminding device to send out dynamic network cleaning reminding information.
According to the range hood monitoring method, after a first pressure value of the front side of a dynamic network of the range hood and a second pressure value of the rear side of the dynamic network are obtained, a loss rate is obtained through calculation according to the first pressure value, the second pressure value and standard pressure loss, when the loss rate is larger than or equal to a preset loss rate threshold value, a reminding instruction is sent to the information reminding device in consideration of the fact that the loss rate is larger, and therefore the information reminding device is controlled to send out reminding information of cleaning of the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
In one embodiment, the calculating a loss rate according to the first pressure value, the second pressure value and a standard pressure loss includes:
calculating to obtain the operating pressure loss according to the first pressure value and the second pressure value;
and calculating the loss rate according to the operating pressure loss and the standard pressure loss.
In one embodiment, the sending a reminding instruction to an information reminding device when the loss rate is greater than or equal to a preset loss rate threshold includes:
and when the duration of the loss rate greater than or equal to the preset loss rate threshold is greater than or equal to the preset duration threshold, sending a reminding instruction to the information reminding device.
In one embodiment, before calculating the loss rate according to the first pressure value, the second pressure value and the standard pressure loss, the method further includes:
and when the range hood is started for the first time, calculating to obtain the standard pressure loss according to the pressure value of the front side and the pressure value of the rear side of the dynamic net of the range hood.
In one embodiment, after calculating the loss rate according to the first pressure value, the second pressure value and the standard pressure loss, the method further includes:
and when the loss rate is smaller than the preset loss rate threshold value, returning to obtain a first pressure value of the front filtering side and a second pressure value of the rear filtering side of the dynamic network of the range hood.
In one embodiment, after sending the reminding instruction to the information reminding device when the loss rate is greater than or equal to the preset loss rate threshold, the method further includes:
after the duration of the prompt message of the dynamic network cleaning sent by the information reminding device reaches the preset reminding duration, sending a stopping instruction to the information reminding device; the stop instruction is used for controlling the information reminding device to stop sending out the reminding information.
A range hood monitoring device comprising:
the pressure value acquisition module is used for acquiring a first pressure value of the front filtering side and a second pressure value of the rear filtering side of the dynamic net of the range hood;
the loss rate obtaining module is used for calculating the loss rate according to the first pressure value, the second pressure value and the standard pressure loss;
the reminding module is used for sending a reminding instruction to the information reminding device when the loss rate is greater than or equal to a preset loss rate threshold value; the reminding instruction is used for controlling the information reminding device to send out dynamic network cleaning reminding information.
According to the range hood monitoring device, after the first pressure value of the front filtering side and the second pressure value of the rear filtering side of the dynamic network of the range hood are obtained, the loss rate is calculated according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to the preset loss rate threshold value, a reminding instruction is sent to the information reminding device in consideration of the fact that the loss rate is larger, and therefore the information reminding device is controlled to send out the prompt information for cleaning the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
A range hood monitoring device comprises a pressure sensor, a control device and an information reminding device, wherein the pressure sensor and the information reminding device are connected with the control device, the pressure sensor is used for detecting a first pressure value of a filtering front side and a second pressure value of a filtering rear side of a dynamic network of a range hood and sending the first pressure value and the second pressure value to the control device, and the control device is used for monitoring the range hood according to the range hood control method.
According to the range hood monitoring equipment, after a first pressure value of the front filtering side and a second pressure value of the rear filtering side of the dynamic network of the range hood are obtained, the loss rate is calculated according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to a preset loss rate threshold value, a reminding instruction is sent to the information reminding device in consideration of the fact that the loss rate is larger, and therefore the information reminding device is controlled to send out prompt information for cleaning the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
In one embodiment, the information reminding device is a buzzer, and the control device is used for controlling the buzzer to send out a buzzing prompt when the loss rate is greater than or equal to a preset loss rate threshold value.
In one embodiment, the control device is further configured to send a stop instruction to the buzzer after the time length for controlling the buzzer to send the buzzer reaches a preset reminding time length; the stop instruction is used for controlling the buzzer to stop giving out a buzzing prompt.
In one embodiment, the information reminding device is a warning lamp.
A range hood comprises a range hood body, a dynamic net and the range hood monitoring equipment.
According to the range hood, after the first pressure value of the front side of the dynamic network of the range hood and the second pressure value of the rear side of the dynamic network of the range hood are obtained, the loss rate is obtained through calculation according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to the preset loss rate threshold value, a reminding instruction is sent to the information reminding device, and therefore the information reminding device is controlled to send out the prompt information of the cleanness of the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
Drawings
FIG. 1 is a flow chart of a range hood monitoring method in one embodiment;
FIG. 2 is a flow chart of a range hood monitoring method in another embodiment;
FIG. 3 is a flow chart of a range hood monitoring method in yet another embodiment;
FIG. 4 is a flow chart of a range hood monitoring method in yet another embodiment;
FIG. 5 is a block diagram of a monitoring device of a range hood according to an embodiment;
FIG. 6 is a block diagram of a range hood monitoring device in one embodiment;
FIG. 7 is a schematic structural diagram of a range hood in one embodiment;
FIG. 8 is a diagram illustrating the structure of a dynamic network in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The structure of lampblack absorber is not exclusive, in this embodiment, use the lampblack absorber to include the box, including a motor, an end cap, a controller, and a cover plate, motor shaft and dynamic net are the example, the dynamic net sets up in the rotatory net of spiral case air intake, through greasy dirt and dust in the high-speed rotatory interception flow of dynamic net gas, the dynamic net is fixed on the motor shaft, along with motor rotary motion, the dynamic net can the adhesion a large amount of greasy dirt at rotatory in-process, thereby prevent that the greasy dirt from getting into the lampblack absorber inner chamber, it uses experience to. Specifically, after the range hood is opened, the motor starts to operate, the motor drives the fan blades to rotate, air is blown out from the volute outlet, negative pressure is generated inside the range hood, air outside the range hood is sucked into the volute under the action of the negative pressure, the air contains grease particles and dust particles, the air passes through the dynamic net at the volute air inlet in the process of entering the volute inside the range hood, and the grease particles and the dust particles contained in the air collide with the dynamic net and are adhered to the dynamic net in a large number. The dynamic net rotates at a high speed along with the motor when the range hood is started, so a large amount of grease particles and dust particles adhered to the dynamic net are thrown out under the action of centrifugal force, the cleaning and intercepting efficiency of the dynamic net is guaranteed, but along with the accumulation of the grease particles and the dust particles, dirt blocks meshes of the dynamic net, the air permeability of the dynamic net is reduced, and the intercepting efficiency is reduced.
In one embodiment, please refer to fig. 1, which provides a range hood monitoring method, which can be implemented by a control device, the control device can be a controller of the range hood itself, and corresponding functions of the range hood monitoring method are added on the basis of the original controller, so as to save hardware cost. Or, an independent controller can be additionally arranged to serve as the control device, and the independent controller can also be connected with the range hood body and communicated with the range hood body to expand the functions of the range hood. The range hood monitoring method comprises the following steps:
step S200: and acquiring a first pressure value of the filtering front side and a second pressure value of the filtering rear side of the dynamic net of the range hood.
Specifically, the filter front side of the dynamic mesh refers to the side of the dynamic mesh away from the motor, and the filter back side of the dynamic mesh refers to the side of the dynamic mesh close to the motor. When the range hood works, oil smoke outside the range hood firstly reaches the filtering front side of the dynamic net, then grease particles and dust particles in the oil smoke collide with the dynamic net and are adhered to the dynamic net in a large amount, the remaining oil smoke reaches the filtering rear side of the dynamic net, and the dynamic net plays a role in filtering.
The specific mode of obtaining the first pressure value of the filtration front side and the second pressure value of the filtration rear side of the dynamic net of the range hood is not unique, in this embodiment, the pressure signal of the dynamic net can be detected through the pressure sensor, the pressure sensor can convert the pressure signal into an electric signal and then send the electric signal to the control device, and the control device analyzes the received electric signal to obtain the first pressure value and the second pressure value. In an extensible manner, when the control device needs to acquire the first pressure value, the control device can firstly send a trigger signal to the pressure sensor, and the pressure sensor starts to detect the pressure signal at the dynamic network after receiving the trigger signal, so that the continuous work of the pressure sensor can be avoided, the workload of the pressure sensor is reduced, and the service life of the pressure sensor is prolonged.
The number of the pressure sensors is not unique, in the embodiment, the number of the pressure sensors is two, and the two pressure sensors are respectively arranged on the smoke exhaust ventilator box bodies on the front side and the rear side of the dynamic filter, are respectively used for detecting a first pressure value on the front side of the dynamic filter and a second pressure value on the rear side of the dynamic filter, and then are sent to the control device, so that mutual interference between detected pressure signals is avoided, and the accuracy of a detection result is improved. Generally, the pressure sensor is not arranged on the dynamic net, and does not rotate at a high speed along with the dynamic net, so that the rotation of the dynamic net does not influence the working performance of the pressure sensor. The pressure sensor is arranged close to the dynamic network in an expandable manner, and the specific distance of the pressure sensor can be adjusted according to the actual situation so as to improve the accuracy of the detection result.
Step S400: and calculating the loss rate according to the first pressure value, the second pressure value and the standard pressure loss.
The first pressure value reflects the pressure of the front side of the dynamic net, namely the pressure of the air duct before the dynamic net filters, and the second pressure value reflects the pressure of the rear side of the dynamic net, namely the pressure of the air duct after the dynamic net filters. The difference value of the first pressure value and the second pressure value reflects the resistance difference value of the air duct before and after the dynamic screen filtering, and the loss rate before and after the dynamic screen filtering can be obtained by combining the standard pressure loss and used as the basis for evaluating the filtering capacity of the dynamic screen.
Step S600: and when the loss rate is greater than or equal to the preset loss rate threshold value, sending a reminding instruction to the information reminding device.
When the loss rate is greater than or equal to the preset loss rate threshold value, considering that the loss rate is larger, the pressure difference between the front side of the filter screen and the rear side of the filter screen is larger, and considering that the air permeability of the dynamic screen is poor, the interception efficiency of the dynamic screen is reduced probably due to the blockage of the filter holes of the dynamic screen. And sending a reminding instruction to the information reminding device, wherein the reminding instruction is used for controlling the information reminding device to send out reminding information of dynamic network cleaning so as to remind a user that the dynamic network is blocked and the dynamic network needs to be cleaned, so that the working performance of the range hood is not influenced. The value of the preset loss rate threshold is not unique, and can be adjusted according to actual requirements, and is not limited herein.
The type of the information reminding device is not unique, and the types of the corresponding prompt messages are different. For example, when the information reminding device is a warning light, if the loss rate is greater than or equal to the preset loss rate threshold, the control device sends a reminding instruction to the warning light, and the warning light can play a role in reminding a user of cleaning the dynamic network through the lighted color or the flashing state, for example, the color turns red and the dynamic network starts to continuously flash after the reminding instruction is received, and the reminding can be continued until the user finishes cleaning the dynamic network, so that the reminding effect is improved. When the information reminding device is a buzzer, if the loss rate is greater than or equal to the preset loss rate threshold value, the control device sends a reminding instruction to the buzzer, the buzzer can play a role in reminding a user of dynamic network cleaning by sending a buzzing prompt, for example, the buzzer begins to drip after receiving the reminding instruction, the buzzing state is maintained for the longest preset reminding time within a single starting operation period, and then the buzzing prompt is not sent again, so that the situation that the buzzer continuously gives an alarm to cause trouble to the user is avoided. And when the user starts the machine next time, the detection is carried out again, if the cleaning requirement is met, the prompt is buzzed again, and the buzzing prompt duration can still be the preset prompting duration. The specific value of the preset reminding time is not unique, and can be adjusted according to actual conditions such as user requirements and the like, so long as the specific value can be realized by the technical personnel in the field.
The control device can continuously acquire the first pressure value and the second pressure value and calculate the loss rate after calculating the loss rate or sending a reminding instruction to the information reminding device, when the loss rate is smaller than a preset loss rate threshold value, the ventilation performance of the dynamic network is considered to be better at the moment, the working performance is still enough, the reminding instruction is stopped being sent to the information reminding device, the range hood can normally work, therefore, the unnecessary interference of the reminding information to a user can be reduced, and the range hood is more convenient to use.
In one embodiment, referring to fig. 2, step S400 includes step S410 and step S420.
Step S410: and calculating the operating pressure loss according to the first pressure value and the second pressure value.
The operation pressure loss is used for representing the magnitude of the pressure difference value of the front side and the rear side of the dynamic network, namely the magnitude of the difference value of the first pressure value and the second pressure value. Specifically, the manner of calculating the operating pressure loss is not exclusive, and may be a difference value between the first pressure value and the second pressure value, a ratio of the first pressure value to the second pressure value, and the like, as long as the calculation is realized by those skilled in the art.
Step S420: and calculating the loss rate according to the operation pressure loss and the standard pressure loss.
After the operation pressure loss is obtained, the loss rate can be calculated according to the operation pressure loss and the standard pressure loss, the standard pressure loss is used as a reference value, and the obtained loss rate can be used for evaluating the air permeability of the dynamic network. The specific value of the standard pressure loss is not unique, the standard pressure losses corresponding to the range hoods with different structures are different, and the value of the labeled pressure loss can be adjusted according to other actual conditions so as to adapt to the requirements of various range hoods. The specific process of calculating the loss rate is not exclusive, and in this embodiment, taking the operating pressure loss as the pressure difference value between the first pressure value and the second pressure value as an example, the loss rate may be calculated by the following formula: (operating pressure loss-standard pressure loss)/standard pressure loss, the loss rate thus calculated can accurately reflect the difference in air permeability performance of the dynamic web between the current case and the standard case, thereby accurately evaluating the filtration performance of the dynamic web. It is understood that in other embodiments, the loss rate may be calculated in other ways, as long as one skilled in the art realizes this.
In one embodiment, referring to fig. 2, step S600 includes step S610.
Step S610: and when the duration of the loss rate greater than or equal to the preset loss rate threshold is greater than or equal to the preset duration threshold, sending a reminding instruction to the information reminding device.
When the loss rate is larger than or equal to the preset loss rate threshold value, the large loss rate is considered, the pressure difference between the front side of the filter screen and the rear side of the filter screen is large, the air permeability of the dynamic screen is considered to be poor, the filter holes of the dynamic screen are blocked, and the interception efficiency of the dynamic screen is reduced. At this time, whether the duration time of the loss rate greater than or equal to the preset loss rate threshold value can reach the preset time threshold value is further judged, if yes, the loss rate is stably maintained above the preset loss rate threshold value, and the dynamic network is indeed blocked, a reminding instruction is sent to the information reminding device to control the information reminding device to send out reminding information of cleaning of the dynamic network, so that a user is reminded that the dynamic network is blocked, and the dynamic network needs to be cleaned so as to avoid influencing the working performance of the range hood. If the duration of the loss rate greater than or equal to the preset loss rate threshold does not reach the preset duration threshold, it is considered that the first pressure value or the second pressure value is possibly detected to be influenced by errors, or errors occur in the process of detecting and processing data, the blocking degree of the dynamic network does not necessarily reach the degree of cleaning, a reminding instruction does not need to be sent to the information reminding device, and further actions can be executed according to subsequently acquired data.
In one embodiment, referring to fig. 3, before step S400, the range hood monitoring method further includes step S300.
Step S300: and when the range hood is started for the first time, calculating to obtain the standard pressure loss according to the pressure value of the front side and the pressure value of the rear side of the dynamic net of the range hood.
Specifically, when the range hood is started for the first time, all devices of the range hood are considered to work in an ideal state, and at the moment, standard pressure loss is calculated according to the pressure value of the front side and the pressure value of the rear side of the dynamic net of the range hood, so that the obtained standard pressure loss can reflect the filtering performance of the dynamic net in the ideal state. In addition, the standard pressure loss obtained in the steps is the standard pressure loss which best meets the product characteristics of the current range hood, and the standard pressure losses corresponding to different range hoods are different, so that the subsequent control on the range hoods is more accurate. And the standard pressure loss is used for representing the magnitude of the pressure difference value between the front side and the rear side of the dynamic net filter when the range hood works in an ideal state. Specifically, the manner of calculating the standard pressure loss is not exclusive, and may be a difference value between a filtering front-side pressure value of the dynamic mesh and a filtering rear-side pressure value of the dynamic mesh, a ratio between the filtering front-side pressure value of the dynamic mesh and the filtering rear-side pressure value of the dynamic mesh, or the like, as long as the calculation is realized by those skilled in the art.
In one embodiment, after step S400, the range hood monitoring method further includes step 500.
Step 500: and returning to the step S200 when the loss rate is smaller than the preset loss rate threshold value.
When the loss rate is smaller than a preset loss rate threshold value, the loss rate is considered to be small, the pressure difference between the front side of the filter screen and the rear side of the filter screen is small, the air permeability of the dynamic screen is considered to be good, the filter holes of the dynamic screen are not blocked or are not seriously blocked, at the moment, a user is not required to be reminded to clean the dynamic screen, the step S200 is returned, the first pressure value of the front side of the dynamic screen of the range hood and the second pressure value of the rear side of the dynamic screen are continuously obtained, and the filtering capacity of the dynamic screen is monitored.
In one embodiment, referring to fig. 3, after step S600, the range hood monitoring method further includes step S700.
Step S700: and after the duration of the prompt message of the dynamic network cleaning sent by the information reminding device reaches the preset reminding duration, sending a stopping instruction to the information reminding device.
The stop instruction is used for controlling the information reminding device to stop sending the reminding information. And after the reminding instruction is sent to the information reminding device, timing the time when the information reminding device sends the reminding information. And after the duration of the prompt message of the dynamic network cleaning sent by the information reminding device reaches the preset reminding duration, sending a stopping instruction to the information reminding device to control the information reminding device to stop sending the prompt message. When the duration of the prompt message of the dynamic network cleaning sent by the message reminding device reaches the preset reminding duration, the message reminding device is considered to have the reminding function, and a stop command is sent to the message reminding device, so that the message reminding device is prevented from continuously sending the prompt message to interfere with the normal life of a user.
For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, the range hood monitoring method is realized based on the control device, and the pressure sensor is a high-precision sensor, so that the accuracy of a detection result can be improved. The preset loss rate threshold value is 6%, and the preset duration threshold value is 1 min. Wind pressure detection points are arranged at the front and the back of the dynamic screen, at the moment, the pressure at the front and the back of the dynamic screen filter screen is monitored through a high-precision pressure sensor, the pressure loss of the filter screen is calculated, the pressure loss is compared with the standard pressure loss of a clean filter screen to predict whether the pressure loss reaches the standard for cleaning the filter screen, the loss rate continuously exceeds 6% in 1min, and corresponding prompts are given back to a user for cleaning the dynamic screen. The standard pressure loss is that when the range hood is started for the first time, the pressure losses on two sides of the dynamic network are the standard pressure loss, the operation pressure loss is that pressure values on two sides of the dynamic network are obtained through monitoring, the pressure difference value is the operation pressure loss, and the loss rate replacement standard is that (the operation pressure loss-the standard pressure loss)/the standard pressure loss is more than or equal to 6%.
Specifically, referring to fig. 4, after the range hood is opened, the motor starts to operate, the motor drives the fan blades to rotate, so that the gas is blown out from the volute outlet to generate negative pressure inside the range hood, and air outside the range hood is sucked into the volute under the action of the negative pressure. The air contains grease particles and dust particles, and the air passes through the dynamic net at the air inlet of the volute in the process of entering the volute inside the range hood, wherein the grease particles and the dust particles contained in the air collide with the dynamic net and are adhered to the dynamic net in a large quantity. The dynamic net rotates at a high speed along with the motor when the cigarette machine is started, so that a large amount of grease particles and dust particles adhered to the dynamic net are thrown out under the action of centrifugal force, and the cleaning and intercepting efficiency of the dynamic net is ensured. However, as grease particles and dust particles accumulate, the dirt blocks the meshes of the dynamic net, so that the air permeability of the dynamic net is reduced, and the interception efficiency is reduced. A pressure monitoring point is arranged at the front and the back of the dynamic network to monitor the pressure values at the front and the back of the dynamic network, and the pressure values are transmitted to a computing chip of the control device in real time to be computed. The pressure sensors are used as pressure monitoring points, cannot rotate at a high speed and are only close to the dynamic network, and the two pressure sensors are arranged on the box bodies of the range hoods at the two sides inside and outside the dynamic network. The chip stores standard pressure loss of a dynamic network, if the calculated pressure loss rate continuously exceeds 6% within 1min, the dynamic network meets the requirement of cleaning, the chip sends two groups of commands, one group of commands reaches a buzzer, the buzzer starts to drop, the buzzing state is maintained for 10min at the longest in a single starting operation period, then the buzzing prompt is not performed, the user still performs detection again when starting the machine next time, and if the pressure loss rate reaches the requirement of cleaning, the buzzing prompt is performed again, and the dynamic network is maintained for 10min at the longest. And the other group of cleaning reminding display lamps on the panel of the range hood change the color of the display lamps into red and start to continuously flash, and the reminding is maintained until the pressure loss rate on two sides of the dynamic network is within 6 percent after a user cleans the dynamic network.
According to the range hood monitoring method, after a first pressure value of the front side of a dynamic network of the range hood and a second pressure value of the rear side of the dynamic network are obtained, a loss rate is obtained through calculation according to the first pressure value, the second pressure value and standard pressure loss, when the loss rate is larger than or equal to a preset loss rate threshold value, a reminding instruction is sent to the information reminding device in consideration of the fact that the loss rate is larger, and therefore the information reminding device is controlled to send out reminding information of cleaning of the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
In an embodiment, please refer to fig. 5, which provides a range hood monitoring device, including a pressure value obtaining module, a loss rate obtaining module and a prompting module, where the pressure value obtaining module is configured to obtain a first pressure value on a filtering front side and a second pressure value on a filtering rear side of a dynamic network of a range hood, the loss rate obtaining module is configured to calculate a loss rate according to the first pressure value, the second pressure value and a standard pressure loss, the prompting module is configured to send a prompting instruction to an information prompting device when the loss rate is greater than or equal to a preset loss rate threshold, and the prompting instruction is used to control the information prompting device to send out prompt information for cleaning the dynamic network.
In one embodiment, the range hood detection device further comprises a standard pressure loss acquisition module, wherein the standard pressure loss acquisition module is used for calculating a standard pressure loss according to a pressure value on the front side of the dynamic network of the range hood and a pressure value on the rear side of the dynamic network of the range hood when the range hood is started for the first time before the loss rate is calculated according to the first pressure value, the second pressure value and the standard pressure loss by the loss rate acquisition module.
In one embodiment, the range hood detection device further comprises a return module, wherein the return module is used for returning the first pressure value on the filtering front side and the second pressure value on the filtering rear side of the dynamic net of the range hood acquired by the pressure value acquisition module when the loss rate is smaller than a preset loss rate threshold value after the loss rate acquisition module calculates the loss rate according to the first pressure value, the second pressure value and the standard pressure loss.
In one embodiment, the range hood detection device further comprises a stopping module, the stopping module is used for sending a reminding instruction to the information reminding device after the reminding module sends a reminding instruction to the information reminding device when the loss rate is greater than or equal to the preset loss rate threshold value, and sending a stopping instruction to the information reminding device after the duration of the information reminding device sending the prompt information of dynamic network cleaning reaches the preset reminding duration, and the stopping instruction is used for controlling the information reminding device to stop sending the prompt information.
According to the range hood monitoring device, after the first pressure value of the front filtering side and the second pressure value of the rear filtering side of the dynamic network of the range hood are obtained, the loss rate is calculated according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to the preset loss rate threshold value, a reminding instruction is sent to the information reminding device in consideration of the fact that the loss rate is larger, and therefore the information reminding device is controlled to send out the prompt information for cleaning the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device sends prompt message this moment, reminds the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
In an embodiment, please refer to fig. 6, which provides a range hood monitoring apparatus, including a pressure sensor 20, a control device 40 and an information reminding device 60, where the pressure sensor 20 and the information reminding device 60 are both connected to the control device 40, the pressure sensor 20 is configured to detect a first pressure value on a front side of a dynamic network of a range hood and a second pressure value on a rear side of the dynamic network and send the first pressure value and the second pressure value to the control device 40, and the control device 40 is configured to perform range hood monitoring according to the range hood control method.
Specifically, the filter front side of the dynamic mesh refers to the side of the dynamic mesh away from the motor, and the filter back side of the dynamic mesh refers to the side of the dynamic mesh close to the motor. When the range hood works, oil smoke outside the range hood firstly reaches the filtering front side of the dynamic net, then grease particles and dust particles in the oil smoke collide with the dynamic net and are adhered to the dynamic net in a large amount, the remaining oil smoke reaches the filtering rear side of the dynamic net, and the dynamic net plays a role in filtering.
The number of the pressure sensors 20 is not unique, in this embodiment, taking the number of the pressure sensors 20 as two as an example, the two pressure sensors 20 are respectively arranged on the smoke exhaust ventilator box bodies on the front side and the rear side of the dynamic filter, and are respectively used for detecting a first pressure value on the front side of the dynamic filter and a second pressure value on the rear side of the filter, and then sending the first pressure value and the second pressure value to the control device 40, so as to avoid mutual interference between detected pressure signals and improve the accuracy of the detection result. In general, the pressure sensor 20 is not disposed on the dynamic network, and does not rotate at a high speed with the dynamic network, so that the rotation of the dynamic network does not affect the operation performance of the pressure sensor 20. The pressure sensor 20 is arranged close to the dynamic network in an expandable manner, and the specific distance thereof can be adjusted according to actual conditions so as to improve the accuracy of the detection result.
In one embodiment, the information reminding device 60 is a buzzer, and the control device 40 is configured to control the buzzer to send a buzzer prompt when the loss rate is greater than or equal to a preset loss rate threshold.
When the information reminding device 60 is a buzzer, if the loss rate is greater than or equal to the preset loss rate threshold value, the control device 40 sends a reminding instruction to the buzzer, and the buzzer starts to make a dripping sound after receiving the reminding instruction, so that the function of reminding a user of cleaning the dynamic network is achieved.
In one embodiment, the control device 40 is further configured to send a stop instruction to the buzzer after the time length for controlling the buzzer to send out the buzzer reaches the preset reminding time length. The stopping instruction is used for controlling the buzzer to stop giving out the buzzing prompt. The buzzer does not buzz after the buzz reminding time reaches the preset reminding time, so that the trouble of continuous alarm of the buzzer on a user is avoided. And when the user starts the machine next time, the detection is carried out again, if the cleaning requirement is met, the prompt is buzzed again, and the buzzing prompt duration can still be the preset prompting duration. The specific value of the preset reminding time is not unique, and can be adjusted according to actual conditions such as user requirements and the like, so long as the specific value can be realized by the technical personnel in the field.
In one embodiment, the message alert device 60 is a notification light. When the information reminding device 60 is a warning light, if the loss rate is greater than or equal to the preset loss rate threshold, the control device 40 sends a reminding instruction to the warning light, and the warning light can play a role in reminding the user of cleaning the dynamic network through the lighted color or the flashing state, for example, the color turns red and the dynamic network starts to continuously flash after receiving the reminding instruction, and the reminding can be continued until the user finishes cleaning the dynamic network, so as to improve the reminding effect.
According to the range hood monitoring equipment, after the first pressure value of the front side of the dynamic network of the range hood and the second pressure value of the rear side of the dynamic network of the range hood are obtained, the loss rate is obtained through calculation according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to the preset loss rate threshold value, a reminding instruction is sent to the information reminding device 60, and therefore the information reminding device 60 is controlled to send out the prompt information of the cleaning of the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device 60 sends out the prompt message this moment, remind the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
In one embodiment, please refer to fig. 7, a range hood is provided, which comprises a range hood body, a dynamic net 10 and the range hood monitoring device as described above. Specifically, the cigarette machine body comprises a box body 31, a motor 32, a motor shaft 33 and the like, the dynamic net 10 is a dynamic rotating net arranged at an air inlet of the volute, oil stains and dust in gas flowing through the dynamic net 10 are intercepted through high-speed rotation, and the structure is shown in fig. 8. Developments net 10 is fixed on motor shaft 33, along with motor 32 rotary motion together, developments net 10 can the adhesion a large amount of greasy dirt at rotatory in-process to prevent that the greasy dirt from getting into the lampblack absorber inner chamber, promote the lampblack absorber and use experience. Specifically, after the range hood is opened, the motor 32 starts to operate, the motor 32 drives the fan blades to rotate to blow out gas from the volute outlet so as to generate negative pressure inside the range hood, air outside the range hood is sucked into the volute under the action of the negative pressure, the air contains grease particles and dust particles, the air passes through the dynamic net 10 at the volute air inlet in the process of entering the volute inside the range hood, and the grease particles and the dust particles contained in the air collide with the dynamic net 10 and are adhered to the dynamic net 10 in a large amount. The dynamic net 10 rotates at a high speed along with the motor when the range hood is turned on, so that a large amount of grease particles and dust particles adhered to the dynamic net 10 are thrown out under the action of centrifugal force, thereby ensuring the cleaning and intercepting efficiency of the dynamic net 10.
According to the range hood, after the first pressure value of the front side of the dynamic network of the range hood and the second pressure value of the rear side of the dynamic network of the range hood are obtained, the loss rate is calculated according to the first pressure value, the second pressure value and the standard pressure loss, when the loss rate is larger than or equal to the preset loss rate threshold value, a reminding instruction is sent to the information reminding device 60 in consideration of the fact that the loss rate is larger, and therefore the information reminding device 60 is controlled to send out prompt information for cleaning the dynamic network. Through monitoring the pressure value to the dynamic net both sides, when the loss rate is more than or equal to and predetermines the loss rate threshold value, consider that the loss rate is great this moment, the wind channel resistance is great, the gas permeability of dynamic net is poor, timely control information reminding device 60 sends out the prompt message this moment, remind the user in time to carry out the dynamic net clean to improve the filtering quality of filter screen, avoid the filter screen to block up and cause lampblack absorber working property poor, thereby improved the use reliability of lampblack absorber.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 invention, 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 inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A range hood monitoring method is characterized by comprising the following steps:
acquiring a first pressure value of a filtering front side and a second pressure value of a filtering rear side of a dynamic net of the range hood;
calculating according to the first pressure value, the second pressure value and standard pressure loss to obtain a loss rate;
when the loss rate is greater than or equal to a preset loss rate threshold value, sending a reminding instruction to an information reminding device; the reminding instruction is used for controlling the information reminding device to send out dynamic network cleaning reminding information.
2. The range hood monitoring method according to claim 1, wherein the calculating a loss rate from the first pressure value, the second pressure value and a standard pressure loss comprises:
calculating to obtain the operating pressure loss according to the first pressure value and the second pressure value;
and calculating the loss rate according to the operating pressure loss and the standard pressure loss.
3. The range hood monitoring method according to claim 1, wherein when the loss rate is greater than or equal to a preset loss rate threshold, sending a reminding instruction to an information reminding device comprises:
and when the duration of the loss rate greater than or equal to the preset loss rate threshold is greater than or equal to the preset duration threshold, sending a reminding instruction to the information reminding device.
4. The range hood monitoring method according to claim 1, wherein before calculating a loss rate according to the first pressure value, the second pressure value and a standard pressure loss, the method further comprises:
and when the range hood is started for the first time, calculating to obtain the standard pressure loss according to the pressure value of the front side and the pressure value of the rear side of the dynamic net of the range hood.
5. The range hood monitoring method according to claim 1, wherein after calculating a loss rate according to the first pressure value, the second pressure value and a standard pressure loss, the method further comprises:
and when the loss rate is smaller than the preset loss rate threshold value, returning to obtain a first pressure value of the front filtering side and a second pressure value of the rear filtering side of the dynamic network of the range hood.
6. The range hood monitoring method according to claim 1, wherein when the loss rate is greater than or equal to a preset loss rate threshold value, after sending a reminding instruction to an information reminding device, the method further comprises:
after the duration of the prompt message of the dynamic network cleaning sent by the information reminding device reaches the preset reminding duration, sending a stopping instruction to the information reminding device; the stop instruction is used for controlling the information reminding device to stop sending out the reminding information.
7. A lampblack absorber monitoring devices, its characterized in that includes:
the pressure value acquisition module is used for acquiring a first pressure value of the front filtering side and a second pressure value of the rear filtering side of the dynamic net of the range hood;
the loss rate obtaining module is used for calculating the loss rate according to the first pressure value, the second pressure value and the standard pressure loss;
the reminding module is used for sending a reminding instruction to the information reminding device when the loss rate is greater than or equal to a preset loss rate threshold value; the reminding instruction is used for controlling the information reminding device to send out dynamic network cleaning reminding information.
8. A range hood monitoring device is characterized by comprising a pressure sensor, a control device and an information reminding device, wherein the pressure sensor and the information reminding device are connected with the control device, the pressure sensor is used for detecting a first pressure value on the front filtering side and a second pressure value on the rear filtering side of a dynamic network of a range hood and sending the first pressure value and the second pressure value to the control device, and the control device is used for monitoring the range hood according to the range hood control method of any one of claims 1 to 6.
9. A range hood monitoring device according to claim 8, wherein said information reminding device is a buzzer, and said control device is configured to control the buzzer to issue a buzzer prompt when said loss rate is greater than or equal to a preset loss rate threshold.
10. The range hood monitoring device according to claim 9, wherein the control device is further configured to send a stop instruction to the buzzer after a duration of controlling the buzzer to send a buzzer prompt reaches a preset reminding duration; the stop instruction is used for controlling the buzzer to stop giving out a buzzing prompt.
11. A range hood monitoring device according to claim 8, characterized in that said information alerting means is a warning light.
12. A range hood, characterized by comprising a range hood body, a dynamic net and a range hood monitoring device according to any one of claims 8-11.
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Application publication date: 20201211 |