CN111189153B - Control method of air purifier - Google Patents
Control method of air purifier Download PDFInfo
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- CN111189153B CN111189153B CN201811357338.7A CN201811357338A CN111189153B CN 111189153 B CN111189153 B CN 111189153B CN 201811357338 A CN201811357338 A CN 201811357338A CN 111189153 B CN111189153 B CN 111189153B
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- air purifier
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/40—Noise
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A control method of an air purifier comprises the following steps: firstly, starting; secondly, detecting whether the actuating mechanism acts and communicating the first fan and the second fan, if so, executing a seventh step; if not, executing the next step; thirdly, only the first fan rotates, the first air outlet is opened, and the second air outlet is closed; fourthly, detecting whether the rotating speed of the first fan reaches V1, and if so, executing the next step; if not, returning to the step three; fifthly, closing the first air outlet, opening the second air outlet, and communicating the first fan and the second fan; sixthly, the rotating speed of the first fan is reduced to V21, and the rotating speed of the second fan is reduced to V22; seventhly, the operation of the two fans is maintained; eighthly, detecting whether the fan rotating speed is increased to V3, and if yes, executing the next step; if not, returning to the previous step; and ninthly, prompting to replace the filter screen. The invention has the advantages that: the low noise level can be always kept on the premise of ensuring the circulating purifying air volume of the air purifier to be basically not attenuated, so that the filtering performance of the filter screen can be fully exerted, and the frequency of replacing the filter screen is reduced.
Description
Technical Field
The invention relates to air purification equipment, in particular to a control method of an air purifier.
Background
The air purifier is a product which can adsorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, formaldehyde and other decoration pollutants, bacteria, allergens and the like) and can effectively improve the air cleanliness.
At present, the air purifier mainly removes particulate matters in air by using a mechanical filter screen type, an electrostatic electret filter screen type, high-voltage electrostatic dust collection, negative ions, a plasma method and the like, wherein the mechanical filter screen is used for pure physical filtration and has high safety, the mechanical filter screen is most widely applied to the air purifier, and the mechanical filter screen is generally used for capturing particles by the following four methods: direct interception, inertial collision, brown diffusion and screening effect, mechanical filter screen are good to tiny particulate matter's collection effect, but the compactness of filter screen leads to the during operation windage great, and then leads to the filter screen life-span to reduce, needs the periodic replacement.
In the prior art, the mechanical filter screen also has the following problems: the windage of filter screen can increase gradually in the use, can bring great noise problem when playing the purification, and the solution of noise usually is that the consumer uses air purifier's low gear is recommended, artificially reduces air purifier's circulation purification amount of wind promptly, perhaps recommends that the consumer changes the filter screen frequently. However, the noise of the air purifier can be reduced by artificially reducing the circulating purifying air volume of the air purifier, but the purifying speed of the air purifier is weakened, and the function of the air purifier cannot be fully exerted; and change the filter screen frequently and can make air purifier's filter screen be in low windage state for a long time, but can not give full play to the filtering quality of filter screen, frequently change the filter screen moreover and still can cause the wasting of resources, increase air purifier's use cost simultaneously.
Accordingly, there is a need for further design improvements and improvements to the current air purifiers in view of the above-mentioned state of the art and problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method of an air purifier, which can ensure that the circulating purified air volume is not attenuated basically and can keep a low noise level, aiming at the current technical situation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a control method of an air purifier comprises an air inlet, a first fan, a first air outlet corresponding to the first fan, a second air outlet corresponding to the second fan and an actuating mechanism capable of controlling the first fan and the second fan to be isolated and communicated with each other, wherein the actuating mechanism controls the first air outlet and the second air outlet to be opened and closed, and is characterized by comprising the following steps:
step one, starting an air purifier;
step two, detecting whether the actuating mechanism acts and communicates the first fan and the second fan, if so, executing step seven; if not, executing the next step;
step three, only controlling the first fan to rotate, and meanwhile, opening the first air outlet and closing the second air outlet;
step four, detecting whether the rotating speed of the first fan is increased to a preset rotating speed V1 or not, and if so, executing the next step; if not, returning to the step three;
fifthly, the actuating mechanism controls the first air outlet to be closed and opens the second air outlet, and meanwhile, the actuating mechanism controls the first fan and the second fan to be communicated;
sixthly, the rotating speed of the first fan is reduced to a preset rotating speed V21, and the rotating speed of the second fan is reduced to a preset rotating speed V22;
seventhly, the first fan and the second fan are maintained to operate at a preset rotating speed V21 and a preset rotating speed V22 respectively;
step eight, detecting whether the rotating speed of at least one fan is increased to a preset rotating speed V3, and if so, executing the next step; if not, returning to the previous step;
and step nine, prompting that the filter screen needs to be replaced by the system, and ending the program.
Preferably, the preset rotation speed V1 in step four is obtained by the following method: under the simulation indoor air particle pollution circumstances in the test environment, open air purifier and continue to purify, first air outlet is opened, and the second air outlet is closed, only first fan operation, when waiting to air purifier's noise value to reach acceptable noise limit value Po, this air purifier's amount of wind is Q, records the rotational speed that first fan corresponds, is preset rotational speed V1 promptly.
Preferably, the preset rotation speeds V21 and V22 in the sixth step are obtained by the following method: under the condition of keeping air clean in a test environment, the first air outlet is closed, the second air outlet is opened, the first fan and the second fan are communicated at the same time, and the first fan and the second fan operate simultaneously; when the motor speed of the second fan is increased to a preset speed V1, the motor speeds of the two fans are synchronously adjusted downwards, so that the noise value of the air purifier reaches an acceptable noise limit value Po, and the air volume of the air purifier is Q; and on the premise of keeping the air quantity Q, finely adjusting the motor rotating speeds of the two fans, and recording the motor rotating speeds of the two fans when the noise value of the air purifier is reduced to a set low noise threshold value Pm, namely the preset rotating speed V21 and the preset rotating speed V22.
Preferably, in the step eight, the preset rotation speed V3 is obtained by: under the simulation indoor air particle pollution condition in the test environment, open air purifier and continue to purify, first air outlet is closed, and the second air outlet is opened, and first fan and second fan are linked together simultaneously, and first fan and second fan all keep the operation, when waiting for air purifier's noise value to reach acceptable noise limit value Po, the motor speed of two fans of record, get the higher value among them, set for rotational speed V3 promptly.
Preferably, the acceptable noise limit value Po is set to 61dB (A) Po 66dB (A) according to the actual use experience.
Preferably, the low noise threshold Pm is obtained by: respectively adjusting the rotating speeds of the first fan and the second fan to obtain N groups of rotating speed data which enable the air volume of the air purifier to reach Q, wherein N noise values corresponding to the air purifier under each group of rotating speed are respectively L1, L2, … and Ln, if the condition MIN (L1: Ln) is more than or equal to Lx and less than AVG (L1: Ln) is met, the detected value Lx is considered to be a relatively low noise value, and is set as a low noise threshold value Pm; where MIN (L1: Ln) represents the minimum value among the N detected noise values, and AVG (L1: Ln) represents the average value of the N detected noise values.
Preferably, the synchronous down-regulation of the motor speeds of the two fans is simply realized by reducing the fan supply voltage or reducing the fan supply current.
Preferably, the rotation speeds of the motors of the two trimming fans meet the following conditions: the total rotating speed adjustment amount of the two fans is controlled within +/-25% of the rotating speed of the existing corresponding fan, and the rotating speed amplitude of one fan is controlled within 5% of the rotating speed of the existing fan.
Compared with the prior art, the invention has the advantages that: the double-fan system is adopted, the two fans are reasonably controlled to be switched on and off, the two fans are connected in series under the condition that the resistance of the filter screen is increased, the two fans can operate at a lower rotating speed to maintain the same level of circulating purification air volume when the single fan works, the lower noise level can be always kept on the premise that the circulating purification air volume of the air purifier is basically not attenuated due to the improvement of the air pressure, the filtering performance of the filter screen can be fully exerted, the frequency of replacing the filter screen is reduced, the resources are saved, and the follow-up cost of using the air purifier is reduced.
Drawings
Fig. 1 is a flowchart of an air purifier control method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The traditional air purifier has small noise in the initial use stage, but the circulating purification air volume of the air purifier is reduced and the noise is increased along with the increase of the resistance of the filter screen, if the noise is reduced, the purifying rate of the air purifier is reduced only by reducing the circulating purification air volume or replacing the circulating purification air volume with a new filter screen, which is contradictory to the initial use stage of people, and users all expect the air purifier to have a higher purifying rate, namely, high performance; in addition, the filter screen does not generally fully exert its filtering performance, and can be used next to the actual time, and if the filter screen is replaced only because the noise becomes bigger, the resource waste is also caused, and the use cost of the air purifier is increased.
In view of the above situation, the present application provides a novel control method, an air purifier adopting the control method has a dual-fan system, including an air inlet, a first fan, a first air outlet corresponding to the first fan, a second air outlet corresponding to the second fan, and an actuating mechanism capable of controlling the mutual isolation and communication of the first fan and the second fan, and the actuating mechanism is capable of controlling the opening and closing of the first air outlet and the second air outlet, and the specific structure setting and the actuating mechanism of the dual-fan are prior art, and can be implemented by adopting the existing structure in the prior art, which is not repeated in the present application.
As shown in figure 1, the balance of circulating purification air volume and noise is realized by reasonably controlling the opening and closing of the two fans, and the control method of the air purifier comprises the following steps:
step one, starting an air purifier.
Step two, detecting whether the actuating mechanism acts and communicating the first fan and the second fan, if so, executing step seven; if not, executing the next step.
And step three, only controlling the first fan to rotate, and meanwhile, opening the first air outlet and closing the second air outlet.
Step four, detecting whether the rotating speed of the first fan is increased to a preset rotating speed V1 or not, and if so, executing the next step; if not, returning to the step three;
the preset rotation speed V1 is obtained by the following method: under the simulation indoor air particle pollution circumstances in the test environment, open air purifier and continue to purify, first air outlet is opened, and the second air outlet is closed, only first fan operation, when waiting to air purifier's noise value to reach acceptable noise limit value Po, this air purifier's amount of wind is Q, records the rotational speed that first fan corresponds, is preset rotational speed V1 promptly.
Fifthly, the actuating mechanism controls the first air outlet to be closed and opens the second air outlet, and meanwhile, the actuating mechanism controls the first fan and the second fan to be communicated;
step six, the rotating speed of the first fan is reduced to a preset rotating speed V21, and the rotating speed of the second fan is reduced to a preset rotating speed V22;
the preset rotation speeds V21 and V22 are obtained by the following method:
(1) under the condition of keeping air clean in the test environment, the first air outlet is closed, the second air outlet is opened, the first fan and the second fan are communicated at the same time, and the first fan and the second fan operate simultaneously;
(2) when the rotating speed of the motor of the second fan is increased to a preset rotating speed V1, the rotating speeds of the motors of the two fans are synchronously adjusted downwards, so that the noise value of the air purifier reaches an acceptable noise limit value Po, the air volume of the air purifier is Q, the rotating speeds of the motors of the two fans are synchronously adjusted downwards by reducing the power supply voltage of the fans or reducing the power supply current of the fans, and the value range of the acceptable noise limit value Po is preferably not less than 61dB (Po) and not more than 66dB (A) according to actual use experience;
(3) under the prerequisite of keeping amount of wind Q, finely tune the motor speed of two fans again, finely tune the motor speed of two fans and satisfy following condition: the total adjusting amount of the rotating speeds of the two fans is controlled within +/-25% of the rotating speed of the corresponding fan, and the rotating speed amplitude of one fan is controlled within 5% of the rotating speed of the existing fan by increasing or decreasing once;
(4) when the noise value of the air purifier is reduced to a set low noise threshold value Pm, recording the motor rotating speeds of the two fans, namely a preset rotating speed V21 and a preset rotating speed V22; the low noise threshold Pm is obtained by the following method: respectively adjusting the rotating speeds of the first fan and the second fan to obtain N groups of rotating speed data which enable the air volume of the air purifier to reach Q, wherein N noise values corresponding to the air purifier under each group of rotating speed are respectively L1, L2, … and Ln, if the condition MIN (L1: Ln) is more than or equal to Lx and less than AVG (L1: Ln) is met, the detected value Lx is considered to be a relatively low noise value, and is set as a low noise threshold value Pm; where MIN (L1: Ln) represents the minimum value among the N detected noise values, and AVG (L1: Ln) represents the average value of the N detected noise values. The above fine adjustment may make the rotation speeds of the first fan and the second fan have many combinations under the air quantity Q, the noise of each combination is tested, and the combination with the relatively lower noise value is selected to determine the V21 and the V22, so to speak, the combination with the relatively lower noise value is rather than the lowest noise value, because the sound quality of the lowest noise combination is not necessarily good, and the relatively lower noise value is rather low and the sound quality is also good.
And step seven, the first fan and the second fan are maintained to operate at a preset rotating speed V21 and a preset rotating speed V22 respectively.
Step eight, detecting whether the rotating speed of at least one fan is increased to a preset rotating speed V3, and if so, executing the next step; if not, returning to the previous step;
the preset rotation speed V3 is obtained by the following method: under the simulation indoor air particle pollution condition in the test environment, open air purifier and continue to purify, first air outlet is closed, and the second air outlet is opened, and first fan and second fan are linked together simultaneously, and first fan and second fan all keep the operation, when waiting for air purifier's noise value to reach acceptable noise limit value Po, the motor speed of two fans of record, get the higher value among them, set for rotational speed V3 promptly.
Step nine, the system prompts that the filter screen needs to be replaced, and the program is ended; the user closes air purifier, carries out the filter screen and changes.
In the initial stage of the use of the air purifier, the resistance of the filter screen is small, the single fan can maintain high circulating purification air quantity by running at a low rotating speed, and the noise is small; along with the use, the resistance of the filter screen is increased, the single fan can only maintain lower circulating purification air quantity when running at higher rotating speed, and the noise is larger. The air purifier is started and closed by adopting a reasonable control method, when the air purifier is started, the single fan is adopted for operation, the two fans are connected in series under the condition that the resistance of the filter screen is increased, and the two fans are operated simultaneously; because the improvement of wind pressure, two sets of fans can lower rotational speed operation maintain the same horizontally circulation purification amount of wind when single fan is worked, can keep lower noise level all the time under the prerequisite of guaranteeing air purifier's circulation purification amount of wind basically not attenuating, can give full play to the filtering quality of filter screen from this, reduce the frequency that the filter screen was changed, resources are saved and the follow-up cost of using air purifier is reduced.
Claims (8)
1. A control method of an air purifier comprises an air inlet, a first fan, a first air outlet corresponding to the first fan, a second air outlet corresponding to the second fan and an actuating mechanism capable of controlling the first fan and the second fan to be isolated and communicated with each other, wherein the actuating mechanism controls the first air outlet and the second air outlet to be opened and closed, and is characterized by comprising the following steps:
step one, starting an air purifier;
step two, detecting whether the actuating mechanism acts and communicates the first fan and the second fan, if so, executing step seven; if not, executing the next step;
step three, only controlling the first fan to rotate, and meanwhile, opening the first air outlet and closing the second air outlet;
step four, detecting whether the rotating speed of the first fan is increased to a preset rotating speed V1 or not, and if so, executing the next step; if not, returning to the step three;
fifthly, the actuating mechanism controls the first air outlet to be closed and opens the second air outlet, and meanwhile, the actuating mechanism controls the first fan and the second fan to be communicated;
sixthly, the rotating speed of the first fan is reduced to a preset rotating speed V21, and the rotating speed of the second fan is reduced to a preset rotating speed V22;
seventhly, the first fan and the second fan are maintained to operate at a preset rotating speed V21 and a preset rotating speed V22 respectively;
step eight, detecting whether the rotating speed of at least one fan is increased to a preset rotating speed V3, and if so, executing the next step; if not, returning to the previous step;
and step nine, prompting that the filter screen needs to be replaced by the system, and ending the program.
2. The control method of an air cleaner according to claim 1, characterized in that: the preset rotating speed V1 in the fourth step is obtained by the following method: under the simulation indoor air particle pollution circumstances in the test environment, open air purifier and continue to purify, first air outlet is opened, and the second air outlet is closed, only first fan operation, when waiting to air purifier's noise value to reach acceptable noise limit value Po, this air purifier's amount of wind is Q, records the rotational speed that first fan corresponds, is preset rotational speed V1 promptly.
3. The control method of an air cleaner according to claim 1, characterized in that: in the sixth step, the preset rotating speeds V21 and V22 are obtained by the following method: under the condition of keeping air clean in a test environment, the first air outlet is closed, the second air outlet is opened, the first fan and the second fan are communicated at the same time, and the first fan and the second fan operate simultaneously; when the motor speed of the second fan is increased to a preset speed V1, the motor speeds of the two fans are synchronously adjusted downwards, so that the noise value of the air purifier reaches an acceptable noise limit value Po, and the air volume of the air purifier is Q; and on the premise of keeping the air quantity Q, finely adjusting the motor rotating speeds of the two fans, and recording the motor rotating speeds of the two fans when the noise value of the air purifier is reduced to a set low noise threshold value Pm, namely the preset rotating speed V21 and the preset rotating speed V22.
4. The control method of an air cleaner according to claim 1, characterized in that: the preset rotating speed V3 in the step eight is obtained by the following method: under the simulation indoor air particle pollution condition in the test environment, open air purifier and continue to purify, first air outlet is closed, and the second air outlet is opened, and first fan and second fan are linked together simultaneously, and first fan and second fan all keep the operation, when waiting for air purifier's noise value to reach acceptable noise limit value Po, the motor speed of two fans of record, get the higher value among them, set for rotational speed V3 promptly.
5. The control method of an air cleaner according to claim 2, characterized in that: the value range of the acceptable noise limit value Po is more than or equal to 61dB (A) and less than or equal to 66dB (A).
6. The control method of an air cleaner according to claim 3, characterized in that: the low noise threshold value Pm is obtained by the following method: respectively adjusting the rotating speeds of the first fan and the second fan to obtain N groups of rotating speed data which enable the air volume of the air purifier to reach Q, wherein N noise values corresponding to the air purifier under each group of rotating speed are respectively L1, L2, … and Ln, if the condition MIN (L1: Ln) is more than or equal to Lx and less than AVG (L1: Ln) is met, the detected value Lx is considered to be a relatively low noise value, and is set as a low noise threshold value Pm; where MIN (L1: Ln) represents the minimum value among the N detected noise values, and AVG (L1: Ln) represents the average value of the N detected noise values.
7. The control method of an air cleaner according to claim 3, characterized in that: and the synchronous down regulation of the motor rotating speeds of the two fans is realized by reducing the power supply voltage of the fans or reducing the power supply current of the fans.
8. The control method of an air cleaner according to claim 3, characterized in that: the motor rotating speeds of the two trimming fans meet the following conditions: the total rotating speed adjustment amount of the two fans is controlled within +/-25% of the rotating speed of the existing corresponding fan, and the rotating speed amplitude of one fan is controlled within 5% of the rotating speed of the existing fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811357338.7A CN111189153B (en) | 2018-11-15 | 2018-11-15 | Control method of air purifier |
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| CN201811357338.7A CN111189153B (en) | 2018-11-15 | 2018-11-15 | Control method of air purifier |
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| CN111189153A CN111189153A (en) | 2020-05-22 |
| CN111189153B true CN111189153B (en) | 2021-05-18 |
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| CN115111670A (en) * | 2021-03-22 | 2022-09-27 | 青岛海尔空调电子有限公司 | Device for adjusting humidity |
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| US5388956A (en) * | 1994-03-09 | 1995-02-14 | General Electric Company | Fan assembly and method for reducing fan noise |
| JPH11237104A (en) * | 1998-02-20 | 1999-08-31 | Daikin Ind Ltd | Fan controller for air conditioner |
| JP2006118747A (en) * | 2004-10-19 | 2006-05-11 | Aisin Aw Co Ltd | Air conditioner |
| CN101059261A (en) * | 2006-04-17 | 2007-10-24 | 株式会社三和Ace | An air conditioner equipped with multiple fans characterized in low noise, high efficiency and air flow control method of the multiple fans |
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| CN111189153A (en) | 2020-05-22 |
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