CN109631226B - Double-fan air purifier control system and control method thereof - Google Patents
Double-fan air purifier control system and control method thereof Download PDFInfo
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- CN109631226B CN109631226B CN201811534348.3A CN201811534348A CN109631226B CN 109631226 B CN109631226 B CN 109631226B CN 201811534348 A CN201811534348 A CN 201811534348A CN 109631226 B CN109631226 B CN 109631226B
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
- F24F11/526—Indication arrangements, e.g. displays giving audible indications
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
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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)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control system and a control method of a double-fan air purifier, wherein the control system comprises a power supply circuit, a control circuit, a first fan driving circuit, a second fan driving circuit and a fan rotating speed detection circuit; the fan rotating speed detection circuit feeds the rotating speeds of the two fans back to the control circuit, and the control circuit respectively controls the rotating speeds of the first fan and the second fan and starts and speeds up according to a set sequence to reduce current impact. The invention provides a control system and a control method of a double-fan air purifier, aiming at solving the technical problem of high noise of the air purifier with double fans due to double-fan resonance and reducing current impact of a circuit.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a control system and a control method of a double-fan air purifier.
Background
The air purifier is a product capable of filtering, adsorbing and decomposing various air pollutants and effectively improving air cleanliness, and is widely applied to the fields of home, office, medical treatment and industry.
In order to improve the purification capacity, a double-fan framework that two motors drive two centrifugal wind wheels is needed, and the double-fan air purifier usually has two fans which are started and operated simultaneously, so that resonance can be caused, noise is caused, and the service life of the air purifier is influenced due to large starting current.
Disclosure of Invention
The invention mainly aims to provide a control system and a control method of a double-fan air purifier, and aims to solve the technical problems of large starting current impact and large noise caused by resonance of the conventional double-fan air purifier.
In order to achieve the purpose, the control system of the double-fan air purifier provided by the invention comprises a power supply circuit, a control circuit, a first fan driving circuit, a second fan driving circuit and a fan rotating speed detection circuit;
the power input ends of the first fan driving circuit and the second fan driving circuit are respectively connected with the power circuit, the signal input end of the first fan driving circuit and the signal input end of the second fan driving circuit are respectively connected with the control circuit, the signal output end of the first fan driving circuit is connected with the first fan, and the signal output end of the second fan driving circuit is connected with the second fan; the output end of the fan rotating speed detection circuit is connected with the feedback end of the control circuit; wherein the content of the first and second substances,
the fan rotating speed detection circuit is used for detecting the rotating speeds of the first fan and the second fan and feeding back the rotating speeds to the control circuit;
and the control circuit is used for controlling the first fan to start when the double-fan air purifier is started, and controlling the second fan to start after preset time.
Preferably, the control circuit respectively adjusts the rotation speeds of the first fan and the second fan according to the first fan rotation speed and the second fan rotation speed detected by the fan rotation speed detection circuit, so as to keep the first fan rotation speed and the second fan rotation speed consistent with respective set rotation speeds thereof.
Preferably, the double-fan air purifier control system further comprises a fan failure alarm device, the fan failure alarm device is connected with the control circuit, and the failure alarm device is used for giving an alarm according to the control of the control circuit.
Preferably, the fan failure warning device includes: one or more of a buzzer and a reminding lamp are combined.
Preferably, double fan air purifier control system still includes air quality detection device, air quality detection device with control circuit connects, air quality detection device is used for real time monitoring double fan air purifier locates the air quality of environment.
Preferably, the air quality detection apparatus includes: one or more of a formaldehyde sensor, a particulate matter sensor, and a Volatile Organic Compound (VOC) sensor.
Preferably, the control circuit is a single chip microcomputer.
The invention also provides a control method of the double-fan air purifier control system, the double-fan air purifier control system is any one of the double-fan air purifier control systems, and the control method comprises the following steps: and in the soft start speed increasing mode, when the soft start speed increasing mode is started, the control circuit controls the rotating speed of the first fan to increase for 5 seconds, then controls the rotating speed of the second fan to increase, and after 15 seconds, the rotating speeds of the first fan and the second fan reach respective set rotating speeds, so that the resonance noise in the speed increasing process is avoided.
Preferably, the control method further includes: and in the first working mode, the control circuit controls the first fan and the second fan to run simultaneously.
Preferably, the control method further includes: and the control circuit controls the first fan and the second fan to run at the same time in the second working mode.
In the technical scheme provided by the invention, when the double-fan air purifier is started, the control circuit controls the first fan driving circuit to start the first fan firstly, the first fan reaches a preset rotating speed within a preset time, the fan rotating speed detection circuit obtains the rotating speed of the first fan and feeds the rotating speed back to the control circuit, then the control circuit controls the second fan driving module to start the second fan, and the second fan reaches a set rotating speed within a preset time; like this two fans separately start and reduce current impact load, guarantee two fans through rotational speed feedback simultaneously and operate according to predetermined rotational speed, resonance noise when can avoiding using.
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 diagram of the principle structure of a control system of a double-fan air purifier according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained 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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a control system of a double-fan air purifier.
Referring to fig. 1, in an embodiment of the present invention, the control system of the dual-fan air purifier includes a power circuit, a control circuit, a first fan driving circuit, a second fan driving circuit, and a fan rotation speed detection circuit;
the power input ends of the first fan driving circuit and the second fan driving circuit are respectively connected with the power circuit, the signal input end of the first fan driving circuit and the signal input end of the second fan driving circuit are respectively connected with the control circuit, the signal output end of the first fan driving circuit is connected with the first fan, and the signal output end of the second fan driving circuit is connected with the second fan; the output end of the fan rotating speed detection circuit is connected with the feedback end of the control circuit; wherein the content of the first and second substances,
the fan rotating speed detection circuit is used for detecting the rotating speeds of the first fan and the second fan and feeding back the rotating speeds to the control circuit;
and the control circuit is used for controlling the first fan to start when the double-fan air purifier is started, controlling the second fan to start after preset time, and respectively controlling the first fan and the second fan to operate at a set rotating speed.
In the technical scheme provided by the invention, when the double-fan air purifier is started, the control circuit controls the first fan driving circuit to start the first fan firstly, the first fan reaches a preset rotating speed within a preset time, the fan rotating speed detection circuit obtains the rotating speed of the first fan and feeds the rotating speed back to the control circuit, then the control circuit controls the second fan driving module to start the second fan, and the second fan and the preset rotating speed of the second fan within the preset time; like this two fans separately start and reduce fan load, guarantee two fans through rotational speed feedback simultaneously and operate according to the rotational speed of settlement, resonance noise in the time of can avoiding moving.
Specifically, in the embodiment of the present invention, the power supply circuit converts a 220V ac voltage into a direct current 310V driving voltage, and outputs the direct current 310V driving voltage to the first fan driving circuit and the second fan driving circuit, where the first fan driving circuit and the second fan driving circuit respectively drive the first fan and the second fan; the 310V drive voltage is then converted to a DC 15V motor VSP debug voltage and a DC 5VIC drive voltage. When the air purifier is used, the air purifier is firstly electrified and is not started, the driving voltage of direct current 310V is disconnected, and the debugging voltage of direct current 15V is disconnected; after the machine is started, the driving voltage of direct current 310V is supplied with power firstly, and then the debugging voltage of direct current 15V is supplied with power; then the first fan starts to start, and the second fan starts after ten seconds; the control circuit adjusts the rotating speeds of the first fan and the second fan according to the rotating speeds of the first fan and the second fan detected by the fan rotating speed detection circuit so as to ensure that the first fan rotating speed and the second fan respectively operate at set rotating speeds, and a constant-speed closed-loop system is formed.
Further, in order to give a corresponding alarm when the double-fan air purifier control system fails, the double-fan air purifier control system further comprises a fan failure alarm device, the fan failure alarm device is connected with the control circuit, and a fan failure alarm prompt is defined through the fan rotating speed detection circuit; the fan failure alarm device includes: one or more of a buzzer and a reminding lamp are combined.
Further, in order to avoid the influence of harmful gases in the air on human bodies, the control system of the double-fan air purifier can monitor the formaldehyde content, the PM2.5 content and the Volatile Organic Compounds (VOC) content in the working environment of the air purifier in real time, and further comprises an air quality detection device, wherein the air quality detection device is connected with the control circuit; the air quality detection device includes: one or more of a formaldehyde sensor, a particulate matter sensor, and a Volatile Organic Compound (VOC) sensor.
Further, the control circuit is a single chip microcomputer control module.
The invention also provides a control method of the double-fan air purifier control system, wherein the double-fan air purifier control system is the double-fan air purifier control system; the control method comprises the following steps: and in the soft start speed increasing mode, when the soft start speed increasing mode is started, the control circuit controls the rotating speed of the first fan to firstly increase for 5 seconds and then controls the rotating speed of the second fan to increase, and after 15 seconds, the rotating speeds of the first fan and the second fan reach a set rotating speed to reduce resonance noise in the speed increasing process.
Specifically, the rotating speed of the first fan rises for 5 seconds to reach a stable preset rotating speed, the fan speed detection circuit obtains the rotating speed of the first fan and feeds the rotating speed back to the control circuit, and the control circuit controls the rotating speed of the second fan and the rotating speed of the first fan to reach a set rotating speed after 15 seconds, so that the resonance noise in the speed rising process is reduced. Therefore, the fan acceleration load can be reduced, and the service life of the product is prolonged.
Specifically, the control method of the double-fan air purifier further comprises the following steps: and the control circuit controls the first fan and the second fan to rotate simultaneously in the first working mode. And the control circuit controls the first fan and the second fan to run at the same time in the second working mode. When using these two kinds of modes, double fan air purifier low power dissipation, noise are low and life extension, satisfy different user's demands simultaneously.
The above description is only a preferred embodiment of the present invention, and is 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 (9)
1. A control system of a double-fan air purifier is characterized by comprising a power supply circuit, a control circuit, a first fan driving circuit, a second fan driving circuit and a fan rotating speed detection circuit;
the power input ends of the first fan driving circuit and the second fan driving circuit are respectively connected with the power circuit, the signal input end of the first fan driving circuit and the signal input end of the second fan driving circuit are respectively connected with the control circuit, the signal output end of the first fan driving circuit is connected with the first fan, and the signal output end of the second fan driving circuit is connected with the second fan; the output end of the fan rotating speed detection circuit is connected with the feedback end of the control circuit; wherein the content of the first and second substances,
the fan rotating speed detection circuit is used for detecting the rotating speeds of the first fan and the second fan and feeding back the rotating speeds to the control circuit;
the control circuit is used for controlling the first fan to start according to the rotating speed of the first fan and the rotating speed of the second fan, which are detected by the fan rotating speed detection circuit, when the double-fan air purifier is started, so that the rotating speed of the first fan reaches and is maintained at the preset rotating speed of the first fan within preset time; and after the preset time, controlling the second fan to start, so that the rotating speed of the second fan reaches and is maintained at the preset rotating speed of the second fan within another preset time.
2. The dual fan air cleaner control system of claim 1, further comprising a fan failure warning device coupled to the control circuit, the failure warning device configured to alert based on control of the control circuit.
3. The dual fan air cleaner control system of claim 2, wherein the fan failure warning device comprises: one or more of a buzzer and a reminding lamp are combined.
4. The dual fan air cleaner control system of claim 1, further comprising an air quality detection device coupled to the control circuit, the air quality detection device configured to monitor the air quality of the environment in which the dual fan air cleaner is located in real time.
5. The dual fan air cleaner control system of claim 4, wherein the air quality detection device comprises: one or more of a formaldehyde sensor, a particulate matter sensor, and a Volatile Organic Compound (VOC) sensor.
6. The dual-fan air cleaner control system of claim 1, wherein the control circuit is a single-chip microcomputer.
7. A control method of a dual fan air purifier control system, the dual fan air purifier control system being the dual fan air purifier control system of any one of claims 1-6, the control method comprising: and in the soft start speed increasing mode, when the fan is started in the soft start speed increasing mode, the control circuit controls the rotating speed of the first fan to firstly rise for 5 seconds and then controls the second fan to rise, and after 15 seconds, the rotating speeds of the first fan and the second fan reach respective set rotating speeds, so that the resonance noise in the speed increasing process is avoided.
8. The control method of a dual fan air cleaner control system of claim 7, wherein the control method of the dual fan air cleaner control system further comprises:
and in the first working mode, the control circuit controls the first fan and the second fan to run simultaneously.
9. The control method of a dual fan air cleaner control system of claim 7, wherein the control method of the dual fan air cleaner control system further comprises:
and the control circuit controls the first fan and the second fan to run at the same time in the second working mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811534348.3A CN109631226B (en) | 2018-12-14 | 2018-12-14 | Double-fan air purifier control system and control method thereof |
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| CN201811534348.3A CN109631226B (en) | 2018-12-14 | 2018-12-14 | Double-fan air purifier control system and control method thereof |
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| CN109631226A CN109631226A (en) | 2019-04-16 |
| CN109631226B true CN109631226B (en) | 2020-12-29 |
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| CN110848928B (en) * | 2019-11-29 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner and control method and device thereof |
| CN111750508B (en) * | 2020-07-30 | 2021-05-14 | 海润新风（重庆）智能技术有限公司 | Working method of ventilator |
| CN114135982A (en) * | 2021-11-24 | 2022-03-04 | 宁波乐歌海生智家科技有限公司 | Control method of air purifier |
| WO2024076298A1 (en) * | 2022-10-04 | 2024-04-11 | Zerro Power Systems Pte Ltd | A system and a method of controlling two or more electrical fans |
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| CN100526654C (en) * | 2005-11-24 | 2009-08-12 | 台达电子工业股份有限公司 | Fan system and its orderly start module and delayed start unit |
| CN102183900B (en) * | 2011-03-23 | 2013-03-27 | 卧龙电气集团股份有限公司 | Low-noise and energy-saving air cleaner and working method thereof |
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| CN207990894U (en) * | 2018-01-03 | 2018-10-19 | 东莞市金都智能控制系统有限公司 | The control circuit of fresh air system |
| CN108507036A (en) * | 2018-03-19 | 2018-09-07 | 李丽芳 | A kind of Indoor Environment Detection device with self-purging ability |
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