CN113898984A - Range hood, control method thereof and computer-readable storage medium - Google Patents
Range hood, control method thereof and computer-readable storage medium Download PDFInfo
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- CN113898984A CN113898984A CN202010643766.7A CN202010643766A CN113898984A CN 113898984 A CN113898984 A CN 113898984A CN 202010643766 A CN202010643766 A CN 202010643766A CN 113898984 A CN113898984 A CN 113898984A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000746 purification Methods 0.000 claims abstract description 177
- 238000004887 air purification Methods 0.000 claims abstract description 60
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000010926 purge Methods 0.000 claims description 43
- 238000004140 cleaning Methods 0.000 claims description 25
- 235000019504 cigarettes Nutrition 0.000 claims description 17
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 43
- 230000000694 effects Effects 0.000 description 18
- 230000008569 process Effects 0.000 description 11
- 238000010411 cooking Methods 0.000 description 10
- 230000036541 health Effects 0.000 description 8
- 239000000428 dust Substances 0.000 description 6
- 239000003517 fume Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
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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 discloses a range hood, a control method thereof and a computer readable storage medium, wherein the range hood comprises a range hood main body and an air purification device arranged on the range hood main body, the air purification device is provided with a purification air channel, a filtering piece arranged in the purification air channel and a purification fan used for driving airflow in the purification air channel to flow, and the control method of the range hood comprises the following steps: acquiring the current rotating speed and/or the current driving current of the purification fan; determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current; and controlling the working state of the air purification device according to the blockage degree. The technical scheme of the invention can realize automatic detection and judgment of the blockage degree of the purification air channel of the air purification device and intelligently control the working state of the air purification device according to the blockage degree.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a range hood, a control method thereof and a computer readable storage medium.
Background
During the cooking process, oil smoke is generated, and the oil smoke not only pollutes the air environment, but also damages the health of human bodies. The traditional range hood can rapidly discharge oil smoke to the outside, and reduces the pollution to the air environment in a kitchen and the damage to the health of human bodies. However, during cooking, there is always oil smoke escaping from the conventional range hood and dissipating into the kitchen space. The escaping oil smoke can still cause oil smoke pollution and harm to the health of human bodies.
In order to further reduce the pollution of the oil smoke to the air environment in the kitchen and the damage to the health of the human body, the range hood is additionally provided with an air purification device on the basis of the range hood main body, so that the oil smoke dissipated to the kitchen space is sucked and purified through the air purification device. However, in the process of using the air purifying device, as the oil smoke, dust and the like accumulate on the internal filter element, the purifying air duct is gradually blocked, thereby affecting the purifying effect of the air purifying device.
Disclosure of Invention
The invention mainly aims to provide a control method of a range hood, which aims to realize automatic detection and judgment of the blockage degree of a purification air channel of an air purification device of the range hood and intelligently control the working state of the air purification device according to the blockage degree.
In order to achieve the above object, the present invention provides a control method for a range hood, where the range hood includes a main body, and an air purification device disposed in the main body, the air purification device includes a purification air duct, a filter disposed in the purification air duct, and a purification fan for driving an air flow in the purification air duct to flow, and the control method for the range hood includes the following steps:
acquiring the current rotating speed and/or the current driving current of the purification fan;
determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current;
and controlling the working state of the air purification device according to the blockage degree.
So, can realize right the jam degree in purification wind channel carries out automated inspection and judges to according to jam degree intelligent control air purification device's operating condition, in order to seek the maintenance to air purification device purifying effect or avoid its excessively to reduce, improve user experience.
Optionally, the step of determining the clogging degree of the purge air duct according to the present rotation speed and/or the present drive current includes:
when the current rotating speed is greater than a preset first rotating speed, determining that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
when the current driving current is smaller than a preset first driving current, determining that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
when at least one of the current rotating speed is greater than a preset first rotating speed and the current driving current is less than a preset first driving current is determined, determining that the purified air duct is in a heavy blockage state.
Optionally, the step of controlling the working state of the air purification device according to the clogging degree comprises:
in the severe blockage state, the purification fan is controlled to stop, so that on one hand, energy consumption is saved under the condition that the air purification device hardly plays a purification role, and on the other hand, the operation time of the purification fan is prevented from being too long under an overhigh rotating speed, so that the probability of damage of the purification fan is reduced, and the longer service life of the purification fan is ensured;
and/or, control the range hood outwards sends out the suggestion of reporting to the police to make the user know the condition that the purification wind channel has appeared seriously blockking up, thereby get rid of the air intake and/or the air outlet is by the condition that the mistake was blocked up, or will filter and dismantle washing or change.
Optionally, the step of determining the clogging degree of the purge air duct according to the present rotation speed and/or the present drive current further comprises:
when the current rotating speed is not less than a preset second rotating speed and is not more than the first rotating speed, determining that the purifying air channel is in a slight blockage state; alternatively, the first and second electrodes may be,
when the current driving current is not less than the first driving current and not more than a preset second driving current, determining that the purification air duct is in a slight blockage state; alternatively, the first and second electrodes may be,
and when at least one of the current rotating speed is not less than a preset second rotating speed, the current rotating speed is not more than the first rotating speed, the current driving current is not less than the first driving current, and the current driving current is not more than the preset second driving current is determined, determining that the purifying air duct is in a light blockage state.
Optionally, the step of controlling the working state of the air purification device according to the clogging degree comprises:
and in the slight blockage state, the driving current of the purification fan is increased so as to increase the rotating speed of the purification fan.
Increase through initiative increase purification fan's rotational speed and pass through the amount of wind in purification wind channel to make air purification device's the purification air quantity value can reply to normal level or be close normal level, and then make air purification device can have good purification efficiency, in order to satisfy the user to clean air's demand.
Optionally, after the step of increasing the driving current of the purification fan to increase the rotation speed of the purification fan in the light blockage state is performed, the second rotation speed and/or the second driving current are/is re-assigned, and then the step of obtaining the current rotation speed and/or the current driving current of the purification fan is performed.
So that the control of the purifying fan is corresponding to the changed rotating speed of the purifying fan and the changed curve of the driving current; it can be understood that after the driving current of the cleaning fan is actively increased to actively increase the rotation speed of the cleaning fan, the variation curves of the rotation speed and the driving current of the cleaning fan are changed.
The invention also provides a range hood, comprising:
a cigarette machine main body;
the air purification device is arranged on the cigarette machine main body and is provided with a purification air channel, a filter element arranged in the purification air channel and a purification fan used for driving the airflow in the purification air channel to flow; and
the controller is used for acquiring the current rotating speed and/or the current driving current of the purification fan, determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current, and controlling the working state of the air purification device according to the blockage degree.
So, can realize right the jam degree in purification wind channel carries out automated inspection and judges to according to jam degree intelligent control air purification device's operating condition, in order to seek the maintenance to air purification device purifying effect or avoid its excessively to reduce, improve user experience.
Optionally, when the current rotation speed is greater than a preset first rotation speed, the controller determines that the purification air duct is in a heavily blocked state; alternatively, the first and second electrodes may be,
when the current driving current is smaller than a preset first driving current, the controller determines that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
the controller determines that the purified air duct is in a heavily blocked state when at least one of the current rotation speed is greater than a preset first rotation speed and the current drive current is less than a preset first drive current is determined.
Optionally, in the severe blockage state, the controller controls the purification fan to stop, so as to save energy consumption under the condition that the air purification device hardly plays a purification role on one hand, and also avoid the purification fan from running for too long time at an excessively high rotating speed on the other hand, so as to reduce the probability of damage of the purification fan and ensure the longer service life of the purification fan;
and/or the controller controls the range hood to send an alarm prompt outwards so that a user can know that the purification air channel is seriously blocked, and the condition that the air inlet and/or the air outlet is blocked by mistake is eliminated, or the filter piece is detached, cleaned or replaced.
Optionally, when the current rotating speed is not less than a preset second rotating speed and is not more than the first rotating speed, the controller determines that the purification air duct is in a slight blockage state; alternatively, the first and second electrodes may be,
when the current driving current is not less than the first driving current and not more than a preset second driving current, the controller determines that the purification air duct is in a slight blockage state; alternatively, the first and second electrodes may be,
and the controller determines that the purification air duct is in a slight blockage state when at least one of the current rotating speed is not less than a preset second rotating speed, the current rotating speed is not more than the first rotating speed, the current driving current is not less than the first driving current, and the current driving current is not more than a preset second driving current is determined.
Optionally, in the light blockage state, the controller increases the driving current of the purification fan to increase the rotation speed of the purification fan.
Increase through initiative increase purification fan's rotational speed and pass through the amount of wind in purification wind channel to make air purification device's the purification air quantity value can reply to normal level or be close normal level, and then make air purification device can have good purification efficiency, in order to satisfy the user to clean air's demand.
Optionally, the controller reassigns the second rotational speed and/or the second drive current after increasing the drive current of the purge fan to increase the rotational speed of the purge fan.
So that the control of the purifying fan is corresponding to the changed rotating speed of the purifying fan and the changed curve of the driving current; it can be understood that after the driving current of the cleaning fan is actively increased to actively increase the rotation speed of the cleaning fan, the variation curves of the rotation speed and the driving current of the cleaning fan are changed.
The invention further provides a computer readable storage medium, wherein a control program of the range hood is stored on the computer readable storage medium, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by the processor.
According to the technical scheme, on one hand, the air purification device and the range hood main body work cooperatively, so that most of oil smoke generated in the cooking process can be discharged to the outside through the oil smoke suction air duct, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification air duct, and therefore the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced; on the other hand, the current rotating speed and/or the current driving current of the purifying fan are monitored, so that the blockage degree of the purifying air channel is determined according to the current rotating speed and/or the current driving current, the blockage degree of the purifying air channel is automatically detected and judged, the working state of the air purifying device is intelligently controlled according to the blockage degree, the purifying effect of the air purifying device is maintained or the excessive reduction of the purifying effect is avoided, and the user experience is improved.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of the air cleaning device of the range hood in fig. 1;
FIG. 3 is a graph showing the variation of the rotation speed and the driving current of the cleaning fan of the air cleaning device;
FIG. 4 is a flow chart illustrating the steps of the control method of the range hood of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a range hood.
Referring to fig. 1 and 2, in an embodiment of the present invention, the range hood includes:
a cigarette machine main body 1;
the air purification device 2 is arranged on the cigarette machine main body 1 and is provided with a purification air channel, a filter piece 22 arranged in the purification air channel and a purification fan 23 used for driving the air flow in the purification air channel to flow; and
the controller 3 is configured to obtain a current rotation speed and/or a current driving current of the purification fan 23, determine a blockage degree of the purification air duct according to the current rotation speed and/or the current driving current, and control a working state of the air purification device 2 according to the blockage degree.
Without loss of generality, the range hood main body 1 is internally provided with an oil fume suction duct, a fume inlet of the oil fume suction duct is communicated with the indoor space, and a fume outlet is communicated with the outdoor space. The air inlet 201 and the air outlet 202 of the purifying air duct of the air purifying device 2 are both communicated with the room. In this embodiment, the purge air duct and the range hood air duct are not communicated with each other. The oil smoke suction duct is used for discharging oil smoke to the outside; the purifying air duct performs circulating filtration and purification on the air flowing through the room through the filter member 22 therein. Of course, the air cleaning device 2 is provided with a rotation speed sensor for detecting the rotation speed of the cleaning fan 23 and a current detector for detecting the driving current of the cleaning fan 23, and both the rotation speed sensor and the current detector are electrically connected to the controller 3, so that the controller 3 can obtain the current rotation speed and the current driving current of the cleaning fan 23.
According to the technical scheme, when the air purification device 2 and the range hood main body 1 work cooperatively, most of oil smoke generated in the cooking process can be discharged to the outside through the oil smoke suction duct, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification duct, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced.
Referring to fig. 3 together, fig. 3 is a graph showing the change in the rotation speed and the driving current of the cleaning fan 23 of the air cleaning device 2. As can be seen from fig. 3, under the condition that the driving voltage of the purification fan 23 is not changed, when the purification air duct is not blocked, the rotation speed and the driving current of the purification fan 23 are stable, and during the process that the purification air duct is gradually blocked, the rotation speed of the purification fan 23 is gradually increased, and the driving current of the purification fan 23 is gradually decreased. Based on this, the technical scheme of the invention monitors the current rotating speed and/or the current driving current of the purifying fan 23 to determine the blockage degree of the purifying air channel according to the current rotating speed and/or the current driving current, so as to realize automatic detection and judgment of the blockage degree of the purifying air channel, and intelligently control the working state of the air purifying device 2 according to the blockage degree, so as to seek maintenance of the purifying effect of the air purifying device 2 or avoid excessive reduction of the purifying effect, and improve user experience.
Alternatively, referring to fig. 1, the air purification device 2 is disposed outside the cigarette maker body 1 so as to detach the filter member 22 for cleaning after the filter member 22 is saturated with soot, dust, etc.; it will be appreciated that the air cleaning device 2, which is disposed outside the cigarette maker body 1, does not require disassembly of the outer appearance of the cigarette maker body 1 during removal of the inner filter member 22 thereof. In some other embodiments, the air purifying device 2 may also be installed without being attached to the cigarette maker main body 1, that is, the air purifying device 2 may be movable relative to the cigarette maker main body 1, at this time, the air purifying device 2 may be connected to the cigarette maker main body 1 through a power supply line to be powered by the cigarette maker main body 1, or the air purifying device 2 may be provided with a plug-in device, and may be powered by an independent plug-in manner. In other embodiments, the air cleaning device 2 may also be disposed inside the range hood body 1 to share an appearance with the range hood body 1, so as to simplify the structure of the range hood.
Alternatively, referring to figure 1, the controller 3 is fixedly mounted to the cigarette maker body 1; it will be appreciated that the cigarette maker body 1 is generally larger in volume and has more and more convenient locations and space for mounting the controller 3 than the air cleaning device 2. The controller 3 is typically in communication with the air cleaning device 2 by wire; of course, the controller 3 may also be in communication connection with the air purification device 2 in a wireless manner, and particularly, in the technical scheme that the air purification device 2 is movable relative to the cigarette maker main body 1, the controller 3 is generally in wireless communication connection with the air purification device 2. However, the design is not limited thereto, and in other embodiments, an independent controller may be provided corresponding to the cigarette maker body 1, and another independent controller may be provided corresponding to the air purifying device 2, so that the controller for controlling the air purifying device 2 is installed on the air purifying device 2.
In one embodiment, the controller 3 determines that the clean air duct is in a heavily blocked state when the current rotation speed is greater than a preset first rotation speed. In this embodiment, the first rotation speed is the maximum rotation speed of the purifying fan 23, and as long as the current rotation speed of the purifying fan 23 is greater than the maximum rotation speed, it indicates that the purifying air duct is in a heavily blocked state, which is usually caused by excessive oil smoke, dust, and the like accumulated on the filter 22, and of course, the air inlet 201 or the air outlet 202 of the purifying air duct may be blocked by mistake, and at this time, the purifying air duct basically has no airflow, so that the air purifying device 2 basically has no air purifying effect, that is, basically has no purifying effect.
However, the present design is not limited thereto, in other embodiments, the controller 3 may also determine that the purge air duct is in a heavily blocked state when the front driving current is less than a preset first driving current; in this embodiment, the first driving current is the minimum driving current of the purge fan 23, and as long as the current driving current of the purge fan 23 is less than the minimum driving current, it indicates that the purge air duct is in a heavily blocked state. In yet other embodiments, the controller 3 may further determine that the clean air duct is in a heavily blocked state when at least one of the current rotation speed is greater than the preset first rotation speed and the current driving current is less than the preset first driving current is determined.
Optionally, in the severe blockage state, the controller 3 controls the purification fan 23 to stop, in order to save energy consumption in the case that the air purification device 2 hardly performs a purification function; on the other hand, the operation time of the purification fan 23 at an excessively high rotation speed can be prevented from being too long, so that the probability of damage of the purification fan 23 is reduced, and the long service life of the purification fan 23 is ensured.
Optionally, in the severe blockage state, the controller 3 may further control the range hood to issue an alarm to the outside, so that a user can know that the purification air duct is severely blocked, thereby eliminating the situation that the air inlet 201 and/or the air outlet 202 is blocked by mistake, or detaching, cleaning or replacing the filter element 22. Further optionally, the alert prompt includes at least one of a sound prompt, a light prompt, a display prompt, and an alert signal sent to an external terminal; certainly, the range hood may be provided with an alarm 4 for the alarm prompt, and the alarm 4 may include a sound prompt, such as a buzzer, corresponding to the sound prompt, and/or a light prompt, such as a flashing indicator light, corresponding to the light prompt, and/or a display screen corresponding to the text prompt, and/or a wireless communication module, such as a WIFI module and a bluetooth module, corresponding to the external terminal to send an alarm signal; in particular, since the severe blockage state can be notified to the remote user by wireless communication, the user can know the severe blockage condition of the air purification device 2 even if the user is in other places, and further can timely notify the householder of the abnormal blockage condition of the air purification device 2.
Without loss of generality, in the present embodiment, the air purification device 2 has a purification housing 21, the purification air duct is molded in the purification housing 21, and the filter 22 is also disposed in the purification housing 21. Optionally, the purification housing 21 is provided with a filter mounting port 203, and the filter member 22 is detachably mounted in the purification housing 21 through the filter mounting port 203, so that removal, cleaning, or replacement of the filter member 22 can be facilitated. Further optionally, the filter element 22 is drawably disposed at the filter element mounting opening 203; it will be appreciated that by means of a pull-out, the filter element 22 can be more easily removed for cleaning or replacement; optionally, a filter mounting box 221 is further provided in the purification housing 21, and the filter 22 is mounted in the purification housing 21 through the filter mounting box 221. Optionally, a filter cover 24 is arranged on the filter mounting port 203; so, will strain a piece 22 certainly strain a piece installing port 203 and pack into the purification shell 21 after, will strain a piece lid 24 lid and close and strain a piece installing port 203, can avoid filtering a piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into in the purification shell 21 from straining a piece installing port 203 simultaneously.
In addition, optionally, the air outlet 202 is disposed on the front surface of the purifying housing 21, so that after the air purifying device 2 is opened, the air purifying device 2 blows air forward or at least has a forward air blowing component. In the cooking process, a user usually stands in front of the range hood, and the space in front of the range hood can be defined as a user breathing zone. It can be understood that the forward air outlet is favorable for conveying the purified air to the user breathing area, thereby being favorable for improving the air quality of the user breathing area, further reducing the probability of the user sucking the oil smoke and reducing the damage of the oil smoke to the health of the user. Optionally, an air outlet grille 25 is disposed on the air outlet 202 to prevent foreign matters from protruding into the purifying housing 21 from the air outlet 202.
However, the design is not limited thereto, and in other embodiments, the air outlet 202 may also be disposed on the top surface of the purifying housing 21, so that the air purifying device 2 blows air upwards or at least has an upward air flow component after the air purifying device 2 is opened. It can be understood that due to the effect of the thermal plume in the cooking process, the oil smoke tends to gather at the upper half part of the kitchen space, the upward air outlet is favorable for blowing the purified air to the upper half part of the kitchen space, so that the oil smoke at the upper half part of the kitchen space flows downwards under the pushing of the upward blown purified air through the purified air until being sucked and purified by the air inlet 201 of the air purifying device 2, thereby realizing the air circulation purification in the kitchen, and further reducing the oil smoke in the kitchen.
Optionally, the air outlet direction of the air outlet 202 is adjustable, so that, for the air outlet 202 arranged on the front surface of the purifying housing 21, the air outlet direction can be changed to meet more air outlet requirements of the user on the air purifying device 2, for example, the requirements of users with different heights for direct blowing or non-direct blowing are met. Particularly, the air outlet 202 disposed on the front surface of the purifying housing 21 can be adjusted to incline upward to facilitate the air circulation and purification in the kitchen.
Optionally, the air inlet 201 is disposed on a side surface of the purifying housing 21, so that the oil smoke escaping to the side of the range hood can be sucked into the purifying housing 21, so as to reduce the oil smoke at the side of the range hood. Particularly, when a dual-burner kitchen range is used below the range hood, the cooking fumes generated during cooking easily escape from the side of the range hood, and the air inlet 201 on the side of the purifying housing 21 is more beneficial to sucking the cooking fumes. Optionally, the air inlets 201 are disposed on two opposite sides of the purifying housing 21, so as to reduce oil smoke on two sides of the range hood.
In an embodiment, the controller 3 determines that the purge air duct is in a light blockage state when the current rotation speed is not less than a preset second rotation speed and does not exceed the first rotation speed. In this embodiment, when the current rotation speed of the purifying fan 23 is less than the first rotation speed (i.e., the maximum rotation speed) but not less than the second rotation speed, it indicates that the purifying air duct is slightly blocked but still does not reach a severe blocking state, which is usually caused by accumulation of some oil smoke and dust on the filter 22, at this time, the air purifying device 2 can also play a certain role in purifying air, but the purifying effect is discounted, and the purifying effect is affected, so that the requirement of the user on clean air cannot be completely met. It should be noted that, referring to fig. 3, when the purification air duct is completely unblocked, the rotation speed of the purification fan 23 is almost the steady-state rotation speed, and in the process that the purification air duct is gradually blocked, the rotation speed of the purification fan 23 will gradually increase from the steady-state rotation speed, and when the rotation speed of the purification fan 23 increases to the second rotation speed or above, it indicates that an unacceptable blocking state occurs in the purification air duct; obviously, the second rotational speed is greater than the steady-state rotational speed.
However, the present design is not limited thereto, in other embodiments, the controller 3 may also determine that the purge air duct is in a light blockage state when the front driving current is not less than the first driving current and does not exceed a preset second driving current; it should be noted that, referring to fig. 3, when the purification air duct is completely unblocked, the driving current of the purification air blower 23 is a steady-state driving current which is almost unchanged, and in the process that the purification air duct is gradually blocked, the driving current of the purification air blower 23 will gradually decrease from the steady-state driving current, and when the driving current of the purification air blower 23 decreases to the second driving current or below, it indicates that the purification air duct is blocked unacceptably; obviously, the second drive current is less than the steady state drive current. In yet other embodiments, the controller 3 may further determine that the purge air duct is in a light blockage state when at least one of the current rotation speed is not less than a preset second rotation speed, and does not exceed the first rotation speed, and the current driving current is not less than the first driving current, and does not exceed a preset second driving current is determined.
Alternatively, in the light clogging state, the controller 3 raises the drive current of the purge fan 23 to increase the rotation speed of the purge fan 23. In this embodiment, in the light blockage state, the controller 3 actively increases the air volume passing through the purification air duct by actively increasing the driving current of the purification fan 23 so as to actively increase the rotation speed of the purification fan 23, so that the purification air volume value of the air purification device 2 can be returned to the normal level or close to the normal level, and further the air purification device 2 can have good purification efficiency so as to meet the requirement of the user on clean air. Generally, the controller 3 increases its driving current by increasing the driving voltage of the purge fan 23. Further alternatively, the controller 3 may control the driving current of the purge fan 23 to be increased by a preset first current increment each time the driving current is increased, and it is understood that the first current increment may be an increment value obtained through a test in a product development stage, and the increment value can increase the air volume of the purge air duct moderately. However, the design is not limited to this, in other embodiments, an air volume detecting element electrically connected to the controller 3 may be disposed at the air outlet 202 of the purification air duct, so as to obtain the air volume of the air outlet 202 through the air volume detecting element, and the controller 3 increases the driving current of the purification fan 23 to increase the rotation speed of the purification fan 23 to the preset air volume, so that the purification air volume value of the air purification apparatus 2 can be returned to the normal level.
It should be noted that, in the technical solution of the present invention, the controller 3 obtains the current rotation speed and/or the current driving current of the purge fan 23 in real time or at preset time intervals, compares the current rotation speed and/or the current driving current with the preset rotation speed or the preset driving current, and controls the purge fan according to the comparison result. Considering that the variation curve of the rotation speed and the driving current of the purge fan 23 is changed after the driving current of the purge fan 23 is actively increased to actively increase the rotation speed of the purge fan 23, in order that the controller 3 controls the purge fan 23 corresponding to the changed variation curve of the rotation speed and the driving current of the purge fan 23 after the speed is increased, the controller 3 re-assigns the second rotation speed and/or the second driving current after the driving current of the purge fan 23 is increased to increase the rotation speed of the purge fan 23. Taking the second rotation speed as an example, the second rotation speed after being re-assigned may be greater than the second rotation speed before being re-assigned, and generally, the specific assignment strategy may be obtained through a test in the development stage (for example, obtaining an increment value for each re-assignment, or setting a specific assignment number for each re-assignment through a mapping list), and stored in a computer-readable storage medium of the product, so as to be obtained and invoked by the controller 3.
The invention also provides a control method of the range hood. The range hood comprises a range hood main body and an air purification device, wherein an oil smoke suction air channel is arranged in the range hood main body, the air purification device is provided with a purification air channel, a filtering piece is arranged in the purification air channel, and the air purification device is further provided with a purification fan used for driving air flow in the purification air channel. The purification air duct and the oil smoke suction air duct are not communicated with each other. The oil smoke suction air duct is used for discharging oil smoke outdoors, and the purification air duct circularly filters and purifies indoor air through the filtering pieces in the purification air duct. Therefore, when the air purification device and the smoke machine main body work cooperatively, most of oil smoke generated in the cooking process can be discharged to the outside through the oil smoke suction air duct, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification air duct, so that the pollution of the oil smoke to the air environment and the damage to the human health are further reduced.
Referring to fig. 4, in an embodiment, the method for controlling the range hood includes the following steps:
step S1, acquiring the current rotating speed and/or the current driving current of the purification fan;
step S2, determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current;
and step S3, controlling the working state of the air purification device according to the blockage degree.
According to the technical scheme, the current rotating speed and/or the current driving current of the purification fan are monitored, the blockage degree of the purification air channel is determined according to the current rotating speed and/or the current driving current, so that the blockage degree of the purification air channel is automatically detected and judged, the working state of the air purification device is intelligently controlled according to the blockage degree, the maintenance of the purification effect of the air purification device is sought or the excessive reduction of the purification effect of the air purification device is avoided, and the user experience is improved.
In one embodiment, the step S2 includes:
and step S21, when the current rotating speed is greater than a preset first rotating speed, determining that the purification air duct is in a heavy blockage state.
In this embodiment, the first rotation speed is the maximum rotation speed of the purification fan, and as long as the current rotation speed of the purification fan is greater than the maximum rotation speed, it indicates that the purification air duct is in a heavily blocked state, which is usually caused by excessive oil smoke, dust, and the like accumulated on the filter element, and of course, the air inlet or the air outlet of the purification air duct may be blocked by mistake, and at this time, the purification air duct basically has no airflow, so that the air purification device basically has no air purification effect, that is, basically has no purification effect.
However, the present disclosure is not limited thereto, and in other embodiments, the step S21 may also be: and when the current driving current is less than a preset first driving current, determining that the purified air duct is in a heavy blockage state.
In this embodiment, the first driving current is a minimum driving current of the purification fan, and it is stated that the purification air duct is in a heavily blocked state as long as a current driving current of the purification fan is less than the minimum driving current.
In yet other embodiments, the step S21 may also be: when at least one of the current rotating speed is greater than a preset first rotating speed and the current driving current is less than a preset first driving current is determined, determining that the purified air duct is in a heavy blockage state.
Further, the step S3 includes:
and step S31, controlling the purification fan to stop in the severe blockage state.
Therefore, on one hand, the energy consumption can be saved under the condition that the air purification device hardly plays a role of purification; on the other hand, the operation time of the purification fan at an overhigh rotating speed can be prevented from being overlong so as to reduce the probability of damage of the purification fan and ensure the longer service life of the purification fan.
Further, the step S3 may further include:
and step S32, controlling the range hood to send out an alarm prompt.
So, can make the user know the condition that the serious jam has appeared in the purification wind channel to the elimination the air intake and/or the air outlet is by the condition that the mistake was stifled, or will filter and dismantle washing or change.
It should be noted that, there is no precedence relationship between the step S31 and the step S32, the step S31 may be executed first and then the step S32 is executed, or the step S32 may be executed first and then the step S31 is executed; in addition, only one of the steps S31 and S32 may be performed.
Further, the step S2 further includes:
and step S22, when the current rotating speed is not less than a preset second rotating speed and is not more than the first rotating speed, determining that the purification air duct is in a light blockage state.
In this embodiment, when the current rotation speed of the purification fan is less than the first rotation speed (i.e., the maximum rotation speed) but not less than the second rotation speed, it indicates that the purification air duct has a slight blockage phenomenon, but still has not reached a severe blockage state, which is usually caused by accumulation of some oil smoke and dust on the filter element, at this time, the air purification device can also play a certain role in purifying air, but the purification effect is discounted, and the purification effect is affected, so that the requirement of the user on clean air cannot be completely met.
However, the present disclosure is not limited thereto, and in other embodiments, the step S22 may also be: and when the current driving current is not less than the first driving current and not more than a preset second driving current, determining that the purification air duct is in a slight blockage state. In other embodiments, the step S22 may also be: and when at least one of the current rotating speed is not less than a preset second rotating speed, the current rotating speed is not more than the first rotating speed, the current driving current is not less than the first driving current, and the current driving current is not more than the preset second driving current is determined, determining that the purifying air duct is in a light blockage state.
Further, the step S3 further includes:
and step S33, in the light blockage state, the driving current of the purification fan is increased so as to increase the rotating speed of the purification fan.
In this embodiment, slight jam state through the drive current who initiatively promotes purification fan to the rotational speed that initiatively increases purification fan increases and passes through the amount of wind in purification wind channel, thereby makes air purification device's purification air volume value can reply to normal level or be close normal level, and then makes air purification device can have good purification efficiency, in order to satisfy the user to clean air's demand. Generally, the driving current of the purge fan is increased by increasing its driving voltage.
Further, after the step S33 is executed, the second rotation speed and/or the second driving current are/is re-assigned, and the step S1 is executed again.
Considering that the variation curves of the rotational speed and the driving current of the purge fan are changed after the driving current of the purge fan is actively increased to actively increase the rotational speed of the purge fan, the second rotational speed and/or the second driving current need to be re-assigned in order that the control of the purge fan is corresponding to the changed variation curves of the rotational speed and the driving current of the purge fan in the process of returning to the loop execution of the steps S1-S3 after the step S33 is executed. Taking the second rotation speed as an example, the second rotation speed after being re-assigned may be greater than the second rotation speed before being re-assigned, and generally, the specific assignment strategy may be obtained through experiments in the development stage (for example, obtaining an incremental value for each re-assignment, or setting a specific number of assignments for each re-assignment through a mapping list), and stored in a computer-readable storage medium of the product for recall.
The invention also provides a computer readable storage medium, wherein a control program of the range hood is stored on the computer readable storage medium, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by the processor. Since the computer-readable storage medium adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A control method of a range hood comprises a range hood main body and an air purification device arranged on the range hood main body, wherein the air purification device is provided with a purification air channel, a filtering piece arranged in the purification air channel and a purification fan used for driving airflow in the purification air channel to flow, and is characterized by comprising the following steps:
acquiring the current rotating speed and/or the current driving current of the purification fan;
determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current;
and controlling the working state of the air purification device according to the blockage degree.
2. The control method of the range hood according to claim 1, wherein the step of determining the clogging degree of the purge air duct according to the current rotation speed and/or the current driving current comprises:
when the current rotating speed is greater than a preset first rotating speed, determining that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
when the current driving current is smaller than a preset first driving current, determining that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
when at least one of the current rotating speed is greater than a preset first rotating speed and the current driving current is less than a preset first driving current is determined, determining that the purified air duct is in a heavy blockage state.
3. The control method of the range hood according to claim 2, wherein the step of controlling the operating state of the air cleaning device according to the clogging degree comprises:
and in the severe blockage state, controlling the purification fan to stop and/or controlling the range hood to send an alarm prompt outwards.
4. The control method of the range hood according to claim 2, wherein the step of determining the clogging degree of the purge air duct according to the current rotation speed and/or the current driving current further comprises:
when the current rotating speed is not less than a preset second rotating speed and is not more than the first rotating speed, determining that the purifying air channel is in a slight blockage state; alternatively, the first and second electrodes may be,
when the current driving current is not less than the first driving current and not more than a preset second driving current, determining that the purification air duct is in a slight blockage state; alternatively, the first and second electrodes may be,
and when at least one of the current rotating speed is not less than a preset second rotating speed, the current rotating speed is not more than the first rotating speed, the current driving current is not less than the first driving current, and the current driving current is not more than the preset second driving current is determined, determining that the purifying air duct is in a light blockage state.
5. The control method of the range hood according to claim 4, wherein the step of controlling the operating state of the air cleaning device according to the clogging degree comprises:
and in the slight blockage state, the driving current of the purification fan is increased so as to increase the rotating speed of the purification fan.
6. The control method of the range hood according to claim 5, wherein after the step of increasing the driving current of the purge fan to increase the rotation speed of the purge fan in the light blockage state is performed, the second rotation speed and/or the second driving current is re-assigned, and the step of obtaining the current rotation speed and/or the current driving current of the purge fan is performed again.
7. A range hood, comprising:
a cigarette machine main body;
the air purification device is arranged on the cigarette machine main body and is provided with a purification air channel, a filter piece arranged in the purification air channel and a purification fan used for driving the air flow in the purification air channel to flow; and
the controller is used for acquiring the current rotating speed and/or the current driving current of the purification fan, determining the blockage degree of the purification air channel according to the current rotating speed and/or the current driving current, and controlling the working state of the air purification device according to the blockage degree.
8. The range hood of claim 7 wherein the controller determines that the purge air duct is heavily clogged when the current speed is greater than a preset first speed; alternatively, the first and second electrodes may be,
when the current driving current is smaller than a preset first driving current, the controller determines that the purification air duct is in a severe blockage state; alternatively, the first and second electrodes may be,
the controller determines that the purified air duct is in a heavily blocked state when at least one of the current rotating speed is greater than a preset first rotating speed and the current driving current is less than a preset first driving current is determined.
9. The range hood according to claim 8, wherein in the severe blockage state, the controller controls the purification fan to stop and/or controls the range hood to give an alarm prompt outwards.
10. The range hood according to claim 8, wherein the controller determines that the purge air duct is in a light blockage state when the current rotation speed is not less than a preset second rotation speed and does not exceed the first rotation speed; alternatively, the first and second electrodes may be,
when the current driving current is not less than the first driving current and not more than a preset second driving current, the controller determines that the purification air duct is in a slight blockage state; alternatively, the first and second electrodes may be,
and the controller determines that the purification air duct is in a slight blockage state when at least one of the current rotating speed is not less than a preset second rotating speed, the current rotating speed is not more than the first rotating speed, the current driving current is not less than the first driving current, and the current driving current is not more than a preset second driving current is determined.
11. The range hood of claim 10 wherein the controller increases the drive current of the purge fan to increase the speed of the purge fan during the light blockage condition.
12. The range hood of claim 11 wherein the controller reassigns the second speed and/or the second drive current after ramping up the drive current of the purge fan to increase the speed of the purge fan.
13. A computer-readable storage medium, characterized in that the computer-readable storage medium stores thereon a control program of a range hood, which when executed by a processor implements the steps of the control method of a range hood as claimed in any one of claims 1 to 6.
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