CN116465048B - Air purification device and control method thereof - Google Patents
Air purification device and control method thereofInfo
- Publication number
- CN116465048B CN116465048B CN202310547793.8A CN202310547793A CN116465048B CN 116465048 B CN116465048 B CN 116465048B CN 202310547793 A CN202310547793 A CN 202310547793A CN 116465048 B CN116465048 B CN 116465048B
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- air
- chamber
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- sound
- coagulant
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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
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F2110/65—Concentration of specific substances or contaminants
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
本发明涉及家用电器技术领域，公开了空气净化装置及其控制方法，空气净化装置包括壳体，其设有进风口和出风口；化学凝聚模块，包括第一聚并室和凝聚剂喷射单元，凝聚剂喷射单元适于向第一聚并室内喷射凝聚剂以促使进入到第一聚并室内的空气中的颗粒物团聚；声波凝聚模块，包括第二聚并室和声波发生单元，声波发生单元适于产生声波以促使由第一聚并室进入到第二聚并室内的空气中的颗粒物再次团聚。本发明利用化学凝聚模块可以增大空气中的细小颗粒污染物的粒径，利用声波凝聚模块可以带动颗粒物之间震动、碰撞，确保细小颗粒污染物之间可以充分凝聚，使得颗粒物粒径进一步增大，方便后续颗粒污染物的分离，从而可以提高对细小颗粒物的净化效率。
The present invention relates to the technical field of household appliances, and discloses an air purification device and a control method thereof. The air purification device includes a housing provided with an air inlet and an air outlet; a chemical condensation module including a first condensation chamber and a coagulant injection unit, the coagulant injection unit being adapted to inject a coagulant into the first condensation chamber to promote agglomeration of particles in the air entering the first condensation chamber; and an acoustic condensation module including a second condensation chamber and an acoustic wave generating unit, the acoustic wave generating unit being adapted to generate acoustic waves to promote reagglomeration of particles in the air entering the second condensation chamber from the first condensation chamber. The present invention utilizes the chemical condensation module to increase the particle size of fine particulate pollutants in the air, and utilizes the acoustic wave condensation module to drive vibration and collision between particles, ensuring that the fine particulate pollutants can be fully condensed, thereby further increasing the particle size of the particles, facilitating subsequent separation of the particle pollutants, and thus improving the purification efficiency of the fine particles.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an air purifying device and a control method thereof.
Background
How to efficiently remove fine particle pollutants in air is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides an air purifying device and a control method thereof, so as to solve the problem that the air purifying device in the prior art cannot efficiently remove fine particle pollutants in air.
In a first aspect, the present invention provides an air purification device comprising a housing, a chemical coagulation module, and an acoustic coagulation module. An air inlet and an air outlet are arranged on the shell. The chemical condensation module is arranged in the shell and comprises a first coalescence chamber with an air inlet end communicated with the air inlet and a coagulant injection unit arranged in the first coalescence chamber, wherein the coagulant injection unit is suitable for injecting coagulant into the first coalescence chamber to promote the aggregation of particles in air entering the first coalescence chamber. The sound wave aggregation module is arranged in the shell and comprises a second aggregation chamber arranged between the first aggregation chamber and the air outlet and a sound wave generation unit arranged in the second aggregation chamber, wherein the sound wave generation unit is suitable for generating sound waves to promote the re-aggregation of particles in air entering the second aggregation chamber from the first aggregation chamber.
In an alternative embodiment, the chemical condensation module further includes a plurality of flow dividing units, the plurality of flow dividing units are arranged in the first coalescence chamber at intervals along the gas flow direction, the flow dividing units include flow dividing plates and a plurality of flow dividing channels arranged on the flow dividing plates at intervals, and the flow dividing channels on two adjacent flow dividing plates are staggered with each other along the gas flow direction. Through a plurality of reposition of redundant personnel units that set up can realize effectively shunting the air that gets into in the first coalescence room for particulate matter in the air can evenly spread to whole first coalescence indoor, improves the purifying effect to the particulate matter. In addition, the flow dividing channels on two adjacent layers of flow dividing plates are staggered alternately, so that the probability of collision between particles is increased.
In an alternative embodiment, the coagulant injection unit is transversely arranged in the first coalescence chamber along the gas flow direction, the coagulant injection unit divides the first coalescence chamber into a first space and a second space which are communicated with each other, the first space is communicated with the air inlet, the second space is communicated with the second coalescence chamber, and the aperture d 1 of a diversion channel of the diversion unit in the first space is smaller than the aperture d 2 of a diversion channel of the diversion unit in the second space.
In the above embodiment, since a part of the particulate matter adheres to the highly viscous cloud-like coagulant and then adheres to the particulate matter in the vicinity thereof, the particle diameter of the particulate matter is increased, and therefore the bypass passage in the second space at the outlet is gradually increased, the bypass passage at the outlet is prevented from being blocked due to the fact that the particle aggregation particle diameter is large and the particulate matter is distributed too densely.
In an alternative embodiment, the spacing between two adjacent said flow dividing channels on the same said flow dividing plate is between 5mm and 8 mm.
In an alternative embodiment, d 1 is between 2mm and 4mm and d 2 is between 4mm and 6 mm.
In an alternative embodiment, the first coalescing chamber has a coalescing chamber housing having a middle portion protruding outwardly and gradually shrinking toward both ends, and the coalescing agent injection unit is disposed at a middle position of the coalescing chamber housing.
In an alternative embodiment, the coagulant injection unit comprises several spray heads connected in series to each other by means of pipes, said spray heads being adapted to spray the coagulant in a mist into the first coalescing chamber. The angle of the spray nozzle spraying the coagulant is horizontal and sprays all around, all particle pollutants are covered as much as possible, the spray nozzle spraying with a certain diffusion angle and high adhesive activity on the surface is used for adsorbing the fine particle pollutants and part of coarse particle pollutants, the fine particles form larger clusters, and part of coarse particle pollutants can adsorb the fine pollutants and become larger clusters.
In an alternative embodiment, the air purification device further comprises a primary filtering unit, wherein the primary filtering unit is arranged between the air inlet and the chemical condensation module and is used for primarily filtering particulate matters in the air. Through the primary filter unit, hair, large particle pollutants and the like in the air can be primarily filtered, and the air primarily purified by the primary filter unit then enters the chemical condensation module.
In an alternative embodiment, the air cleaning device further comprises a first concentration detection unit, which is arranged between the primary filter unit and the chemical condensation module, and is adapted to detect the concentration information of the particulate matter in the air flowing into the first coalescing chamber. The first concentration detection unit can accurately control the injection quantity of the coagulant according to the concentration information of the particulate matters in the air flowing into the first coalescence chamber, and the purification efficiency of the fine particulate matters is improved.
In an alternative embodiment, the sound wave generating unit includes a plurality of sound wave generators disposed at intervals in the second coalescing chamber.
In an alternative embodiment, the sound wave generating unit is adapted to generate sound waves of 1000Hz-3000 Hz.
In an alternative embodiment, the air purification device further comprises a second concentration detection unit, which is arranged between the chemical condensation module and the acoustic condensation module and is adapted to detect concentration information of particulate matter in the air flowing into the second condensation chamber. Through the second concentration detection unit that sets up, can be according to the particulate matter concentration information that second concentration detection unit fed back, the sound wave power size of control sound wave aggregation module ensures that can obtain abundant agglomeration between the tiny particle pollutant.
In an alternative embodiment, the air purifying device further comprises a particulate matter separation module disposed at the air outlet end of the acoustic wave condensing module, and the particulate matter separation module is adapted to separate particulate matter in air discharged from the air outlet end of the acoustic wave condensing module.
In an alternative embodiment, the air purifying device further comprises a particulate matter processing module, the particulate matter processing module is provided with a processing cavity, an inlet of the processing cavity is communicated with an outlet of the particulate matter separating module, a sterilizing solution is contained in the processing cavity, and the particulate matters separated by the particulate matter separating module enter the processing cavity for sterilization.
In an optional embodiment, the air purification device further comprises a silencing module, wherein the silencing module comprises soundproof cotton sealed between the sound wave condensation module and the air outlet, a plurality of air-passing channels are arranged on the soundproof cotton at intervals, the silencing module further comprises a plurality of open-pore sound-absorbing cotton, and the open-pore sound-absorbing cotton is embedded in the air-passing channels in a one-to-one correspondence manner.
In an alternative embodiment, the perforated sound absorbing cotton is spherical, a containing cavity matched with the perforated sound absorbing cotton in shape and size is arranged in the air passage, the perforated sound absorbing cotton is embedded in the containing cavity, and an air passage hole with an axis parallel to the axis of the air passage is arranged in the perforated sound absorbing cotton.
In an optional embodiment, the air purifying device further comprises a fan module, the fan module comprises a fan cavity and a fan arranged in the fan cavity, an air inlet end of the fan cavity is communicated with an air outlet end of the acoustic wave condensation module, an air outlet end of the fan cavity is communicated with the air outlet, and the silencing module is arranged in the fan cavity and is located between the fan and the air outlet.
In a second aspect, the invention also provides a control method of the air purifying device according to any of the above embodiments, the control method comprising receiving an air purifying device start signal, controlling a coagulant injection unit to start, injecting coagulant into a first coalescing chamber to cause agglomeration of particulate matter in air entering the first coalescing chamber, and controlling an acoustic wave generation unit to start, generating acoustic waves to cause re-agglomeration of particulate matter in air entering a second coalescing chamber from the first coalescing chamber.
In an alternative embodiment, the control coagulant injection unit is started, and the coagulant injection unit is injected into the first coalescence chamber to promote the agglomeration of the particles in the air entering the first coalescence chamber specifically comprises the steps of acquiring first concentration information of the particles in the air entering the first coalescence chamber, judging whether the first concentration information is greater than or equal to a first concentration threshold value, if so, controlling the coagulant injection unit to inject the coagulant into the first coalescence chamber in a first injection amount, and if not, controlling the coagulant injection unit to inject the coagulant into the first coalescence chamber in a second injection amount, wherein the first injection amount is greater than the second injection amount.
In an optional implementation manner, the control sound wave generating unit is started to generate sound waves so as to enable the particles in the air entering the second coalescing chamber from the first coalescing chamber to be agglomerated again specifically comprises the steps of obtaining second concentration information of the particles in the air entering the second coalescing chamber, judging whether the second concentration information is larger than or equal to a second concentration threshold value, if yes, controlling the sound wave generating unit to generate sound waves with first sound wave frequency and first sound pressure level, and if not, controlling the sound wave generating unit to generate sound waves with second sound wave frequency and second sound pressure level, wherein the first sound wave frequency is larger than the second sound wave frequency and the first sound pressure level is larger than the second sound pressure level.
The invention has the following advantages:
According to the air purification device provided by the invention, the chemical coagulation module and the acoustic coagulation module are coupled, so that the particle pollutants with smaller particle sizes in the air are efficiently removed in a mode of combining chemical coagulation and mechanical coagulation. First, the adhesion performance among the particulate pollutants is improved by a chemical coalescence method, so that fine particulate matters in the air entering the first coalescence chamber can be cohered together under the action of a coagulant, and the particle size of the particulate matters is increased. Then, sound wave generating unit produces the sound wave, the collision between the acceleration particulate matter not only can make and get into fully combining between the particulate matter and the coagulant in the second coalescence room, ensure can obtain abundant agglomeration between the tiny particulate matter, and the sound wave that sound wave generating unit produced can also make the air vibration of second coalescence room, drive vibrations, the collision between the particulate matter, the particle pollutant is bigger along with the amplitude of gas vibrations is smaller more, the particle pollutant is smaller along with the amplitude of gas vibrations is bigger along with the homodromous agglomeration of sound field, the particle pollutant of big particle diameter promotes little particle diameter particulate matter agglomeration to grow up, and then improved the collision probability between the particulate matter, the particulate matter particle diameter through the sound wave agglomeration module will further increase. In addition, because hydrodynamic effects exist among particle pollutants in the sound field, and the hydrodynamic effect distance is larger than the homodromous agglomeration effect distance, particles with the same or similar particle diameters can be agglomerated with each other, so that the particle diameters of most particle pollutants are obviously increased, the separation of the subsequent particle pollutants is facilitated, and the fine particle pollutants in the air can be efficiently removed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an air purification device according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the voice module of FIG. 1;
FIG. 3 is a top view of a diverter unit according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of an embodiment of a control method of an air purifying apparatus according to the embodiment of the invention;
FIG. 5 is a schematic flow chart of another embodiment of a control method of an air purifying apparatus according to the embodiment of the present invention;
fig. 6 is a schematic flow chart of a control method of an air purifying apparatus according to another embodiment of the present invention.
Reference numerals illustrate:
10. The device comprises a chemical condensation module, a first coalescence chamber, a coagulant injection unit, a diversion plate, a diversion channel and a diversion channel, wherein the chemical condensation module comprises a first coalescence chamber, a coagulant injection unit, a diversion plate, a diversion channel and a diversion channel;
20. A sonic condensing module; 21, a second coalescing chamber 22, an acoustic wave generating unit;
30. A primary filtration unit;
40. a first concentration detection unit;
50. A second concentration detection unit;
60. A particulate separation module 61, a separation conduit;
70. a particulate matter treatment module;
80. The sound-absorbing device comprises a sound-absorbing module, 81, sound-insulating cotton, 811, an air passage, 82, sound-absorbing cotton with holes, 821 and air through holes;
90. Fan module 91, fan cavity 92, fan.
100. The device comprises a shell, 101, an air inlet, 102 and an air outlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
At present, the removal of small particles by an air purifying device mainly depends on an electrostatic device or a filtering device made of a HEPA efficient filter screen. When the electrostatic device is used for removing the particle pollutants in the air, the cleaning efficiency of the electrostatic device on the tiny particles is lower, the cleaning efficiency of the electrostatic device is also reduced along with the continuous accumulation of the suspended particles, and the dust collecting plate of the electrostatic device is required to be cleaned frequently to restore the cleaning efficiency. When the filtering device is used for removing the particle pollutants in the air, the filtering efficiency of the filter screen is reduced after the pollutants on the surface of the filter screen reach saturation, so that the filter screen needs to be replaced in time to ensure the purifying efficiency. When the electrostatic device and the filtering device are used for filtering particulate pollutants in the air, the pollutants are enriched on the surface of the dust collecting plate or the filter screen, regular maintenance or replacement is needed, and the maintenance cost is high. Accordingly, to avoid the above problems, the related art adopts a coalescing manner to achieve the purification of fine particle contaminants.
It should be noted that coalescence is a stable collision behavior expected in many application technologies, such as viscous sintering, spray cooling, and emerging microfluidics and nanofluidics technologies, and the related technicians mostly use chemical coalescence or sonic coalescence to achieve the purification of fine particle pollutants. However, the adhesion performance between particles can be improved by means of chemical coalescence, but it is difficult to ensure sufficient bonding between the coagulant and the particulate contaminants, and between the particulate contaminants. The particle size of the particle pollutants is increased by means of sonic coalescence so as to purify the particle pollutants, and higher frequency and sonic conditions are required, and meanwhile, higher noise hazard is generated and needs to be eliminated. Therefore, the aggregation method has certain defects when acting independently, and the aggregation effect on the fine particle pollutants is not obvious.
Embodiments of the present invention are described below with reference to fig. 1 to 6.
According to an embodiment of the present invention, in one aspect, the present invention provides an air cleaning apparatus including a housing 100, a chemical coagulation module 10, and an acoustic coagulation module 20.
Specifically, the housing 100 is provided with an air inlet 101 and an air outlet 102. The chemical coagulation module 10 is provided in the housing 100, and the chemical coagulation module 10 includes a first coalescing chamber 11 having an air inlet end communicating with the air inlet 101, and a coagulant injection unit 12 provided in the first coalescing chamber 11, the coagulant injection unit 12 being adapted to inject a coagulant into the first coalescing chamber 11 to promote agglomeration of particulate matter in air entering the first coalescing chamber 11. The acoustic wave condensing module 20 is disposed in the housing 100, and the acoustic wave condensing module 20 includes a second condensing chamber 21 disposed between the first condensing chamber 11 and the air outlet 102, and an acoustic wave generating unit 22 disposed in the second condensing chamber 21, the acoustic wave generating unit 22 being adapted to generate acoustic waves to promote re-agglomeration of particulate matters in the air introduced into the second condensing chamber 21 from the first condensing chamber 11.
The air purifying device provided in the above embodiment utilizes the coupling of the chemical coagulation module 10 and the acoustic coagulation module 20 to realize the efficient removal of the particulate pollutants with smaller particle diameters in the air by combining the chemical coagulation and the mechanical coagulation. Firstly, the particle size of fine particle pollutants in the air can be increased by using the chemical condensation module 10, then, the vibration and collision between the particles can be driven by using the acoustic condensation module 20, so that the fine particle pollutants can be fully condensed, the particle size of the particles is further increased, the separation of the subsequent particle pollutants is facilitated, and the purification efficiency of the fine particle pollutants can be improved.
In this embodiment, the adhesion performance between the particulate pollutants is improved by the chemical coalescing method, so that the fine particulate matters in the air entering the first coalescing chamber 11 can be cohered together under the action of the coagulant, thereby increasing the particle size of the particulate matters. Then, the sound wave generating unit 22 generates sound waves to accelerate the collision between the particles, so that the particle pollutants entering the second coalescing chamber 21 are fully combined with the coalescing agent, the fine particle pollutants can be fully coalesced, the sound waves generated by the sound wave generating unit 22 can vibrate the air of the second coalescing chamber 21 to drive the vibration and collision between the particles, the larger the particle pollutants are smaller along with the amplitude of the gas vibration, the smaller the particle pollutants are along with the amplitude of the gas vibration, the larger the particle pollutants are due to the homodromous agglomeration of the sound field, the particle pollutants with large particle diameters promote the agglomeration and growth of the particle pollutants with small particle diameters, the collision probability between the particle matters is improved, and the particle diameters of the particle matters passing through the sound wave coalescing module 20 are further increased.
In addition, because hydrodynamic effects exist among particle pollutants in the sound field, and the hydrodynamic effect distance is larger than the homodromous agglomeration effect distance, particles with the same or similar particle diameters can be agglomerated with each other, so that the particle diameters of most particle pollutants are obviously increased, the separation of the subsequent particle pollutants is facilitated, and the fine particle pollutants in the air can be efficiently removed.
The specific structure of the chemical coagulation module 10, the specific distribution, assembly relationships, operation, etc. of each structure are described in detail below with reference to fig. 1 and 3.
In this embodiment, the chemical condensation module 10 further includes a plurality of flow dividing units 13, and the plurality of flow dividing units 13 are arranged in the first coalescence chamber 11 at intervals along the gas flow direction. The splitter unit 13 includes splitter plates 131 and a plurality of splitter passages 132 provided at intervals to the splitter plates 131, and the splitter passages 132 on adjacent two splitter plates 131 are offset from each other.
In the above embodiment, the air entering the first coalescence chamber 11 can be effectively split through the plurality of splitting units 13, so that the particulate matters in the air can be uniformly diffused into the whole first coalescence chamber 11, and the purifying effect on the particulate matters is improved. In addition, the flow dividing channels 132 on two adjacent flow dividing plates 131 are staggered alternately, which is more beneficial to increasing the probability of collision between particulate matters.
Further, the sectional shape and size of the splitter plate 131 are matched with the inner peripheral shape and size of the first merging chamber 11, and the splitter plate 131 can be mounted and fixed in the first merging chamber 11 by screws or clamping, so that the assembly and disassembly are convenient.
Optionally, the distance between two adjacent diversion units 13 is 10mm, and each layer of diversion plate 131 is provided with a plurality of diversion channels 132, and the diversion channels 132 are round holes.
Note that, the splitter plate 131 in this embodiment is made of a material that blocks the passage of contaminants, such as an injection molding material ABS, PLA, and the like.
In an alternative embodiment, the coagulant injection unit 12 is disposed across the first coalescing chamber 11 in the gas flow direction, and the coagulant injection unit 12 partitions the first coalescing chamber 11 into a first space and a second space which are communicated with each other, wherein the first space is communicated with the air inlet 101, the second space is communicated with the second coalescing chamber 21, and the aperture d 1 of the split channel 132 of the split unit 13 located in the first space is smaller than the aperture d 2 of the split channel 132 of the split unit 13 located in the second space.
In the above embodiment, since a part of the particulate matter adheres to the highly viscous cloud-like coagulant and then adheres to the particulate matter in the vicinity thereof, thereby increasing the particle diameter of the particulate matter, the bypass passage 132 of the second space at the outlet is gradually increased, and the bypass passage 132 at the outlet is prevented from being blocked by the larger particle diameter of the particulate matter agglomerate.
In an alternative embodiment, the spacing between two adjacent shunt channels 132 on the same shunt plate 131 is between 5mm and 8 mm.
Preferably, the spacing between the holes of two adjacent diversion channels 132 on the diversion plate 131 in the first space is 5mm-6mm, and the spacing between the holes of two adjacent diversion channels 132 on the diversion plate 131 in the second space is 6mm-8mm, so as to prevent the phenomenon that the diversion channels 132 in the second space are blocked due to larger particle aggregation particle size.
In an alternative embodiment, d 1 is between 2mm and 4mm and d 2 is between 4mm and 6 mm.
In an alternative embodiment, the first coalescing chamber 11 has a coalescing chamber housing protruding from the middle and gradually shrinking toward both ends, and the coalescing agent ejection unit 12 is provided at a middle position of the coalescing chamber housing. That is, the cross-sectional area of the coalescence chamber housing gradually increases from the inlet end toward the middle portion and gradually decreases from the middle portion toward the outlet end. The coalescence chamber shell is designed by adopting the shape, so that air can be dispersed and diffused into the whole first condensation chamber when entering the coalescence chamber shell, the contact rate of pollutants and chemical coagulant is improved, the collision probability of particle pollutants can be increased when the air leaves the coalescence chamber shell, and then the binding rate between the particle pollutants can be improved, the particle size of the particles is further increased, and the separation of the subsequent particle pollutants is facilitated.
Specifically, the coagulant injection unit 12 divides the coalescence chamber housing into an upper portion, which is a second space, and a lower portion, which is a first space. The coalescence chamber shell is formed by splicing two frustum-shaped shells, and the large-caliber ends of the two frustum-shaped shells are butted. The small-caliber end of the lower frustum-shaped shell is communicated with the air inlet 101, and the small-caliber end of the upper frustum-shaped shell is communicated with the air inlet end of the sound wave condensation module 20. The coagulant injection unit 12 is provided at a splice position in the middle of two frustum-shaped cases.
In an alternative embodiment, the coagulant injection unit 12 comprises several spray heads connected in series to each other by means of pipes, the spray heads being adapted to spray coagulant in mist form into the first coalescing chamber 11. The spray head is provided with a plurality of tiny spray holes. In this embodiment, the angle of the coagulant sprayed by the spray head is that the coagulant is sprayed horizontally to the periphery, so as to cover all the particle pollutants as much as possible, and the mist sprayed by the spray head with a certain diffusion angle and with higher adhesion activity on the surface is adsorbed on the surfaces of the fine particle pollutants and part of the coarse particle pollutants, so that the fine particles form larger clusters, and part of the coarse particle pollutants also adsorb the fine pollutants to become larger clusters.
In this embodiment, the coagulant may be a mixed aqueous solution composed of an inorganic ammonium salt and a polyacrylamide flocculant.
In an alternative embodiment, the air cleaning apparatus further includes a primary filter unit 30, and the primary filter unit 30 is disposed between the air inlet 101 and the chemical condensation module 10, for primarily filtering particulate matters in the air. By providing the primary filter unit 30, hair, large particle contaminants, etc. in the air can be primarily filtered, and the primarily purified air through the primary filter unit 30 then enters the chemical coagulation module 10.
Specifically, the primary filter unit 30 is a primary filter screen, and the frustum-shaped small-caliber port below the coalescence chamber housing continues to extend downwards to form a connecting cylinder, and the primary filter unit 30 is detachably mounted and fixed in the connecting cylinder.
In an alternative embodiment, the air cleaning apparatus further comprises a first concentration detection unit 40, the first concentration detection unit 40 being arranged between the primary filter unit 30 and the chemical condensation module 10, adapted to detect concentration information of particulate matter in the air flowing into the first coalescing chamber 11. By providing the first concentration detection unit 40, the injection amount of the coagulant can be precisely controlled according to the concentration information of the particulate matters in the air flowing into the first coalescing chamber 11, and the purification efficiency of the fine particulate matters can be improved.
The specific structure of the acoustic wave aggregation module 20, the specific distribution, assembly relationships, operation, etc. of the structures are described in detail below in conjunction with fig. 1.
In an alternative embodiment, the sound wave generating unit 22 comprises several sound wave generators arranged at intervals within the second coalescing chamber 21.
Specifically, the second coalescing chamber 21 includes a cylindrical peripheral wall and upper and lower end walls provided at upper and lower ends of the cylindrical peripheral wall. Wherein, the middle of the lower end wall is provided with an air inlet which is communicated with the air outlet of the first coalescence chamber 11 through a pipeline. The sound wave generators are uniformly distributed on the inner wall of the cylindrical second aggregation chamber 21 at intervals, namely, the sound wave generators are uniformly distributed on the cylindrical peripheral wall and the upper and lower end walls at intervals, so that the second aggregation chamber 21 can generate uniformly distributed sound waves.
In an alternative embodiment, the sound wave generating unit 22 is adapted to generate sound waves of 1000Hz-3000 Hz.
In an alternative embodiment, the air cleaning apparatus further comprises a second concentration detection unit 50, the second concentration detection unit 50 being arranged between the chemical condensation module 10 and the acoustic wave condensation module 20, adapted to detect concentration information of particulate matter in the air flowing into the second coalescing chamber 21. By the second concentration detection unit 50, the sound wave power of the sound wave condensation module 20 can be controlled according to the particulate matter concentration information fed back by the second concentration detection unit 50, so that sufficient condensation among fine particulate pollutants can be ensured.
In the present embodiment, the first concentration detecting unit 40 and the second concentration detecting unit 50 are dust concentration sensors.
The larger particles passing through the chemical condensation module 10 enter the acoustic condensation module 20, the whole shell of the second condensation chamber 21 is cylindrical, and a plurality of acoustic generators are uniformly distributed on the inner wall of the second condensation chamber 21 and used for generating low-frequency acoustic waves (1000 Hz-3000 Hz), the frequency of the acoustic waves changes along with the concentration detected by the dust concentration sensor, and if the dust concentration is higher, the acoustic generators generate acoustic waves with higher frequency so as to accelerate the collision among the particles. The sound wave generated by the sound wave generator enables the gas in the second coalescing chamber 21 to vibrate, so that vibration among the particles is driven, the larger the particle pollutants are, the smaller the particle pollutants are, the larger the particle pollutants are, due to the homodromous agglomeration of the sound field, the particle pollutants with large particle sizes promote agglomeration and growth of the particles with small particle sizes, the collision probability among the particles is further improved, and the particle sizes of the particles passing through the sound wave agglomeration module 20 are further increased. The particle pollutants in the sound field have hydrodynamic effects, the hydrodynamic effect distance is larger than the homodromous agglomeration effect distance, so that particles with the same or similar particle diameters can be agglomerated with each other, and the particle diameters of most particle pollutants are obviously increased.
In an alternative embodiment, the air cleaning apparatus further includes a particulate matter separation module 60 disposed at the air outlet end of the acoustic wave condensing module 20, and the particulate matter separation module 60 is adapted to separate particulate matter from air discharged from the air outlet end of the acoustic wave condensing module 20.
It should be noted that, in the present embodiment, the particulate matter separation module 60 is similar to a molecular sieve structure, and can separate particulate pollutants (except volatile matters) with a particle size of more than 3 nm.
In an alternative embodiment, the air cleaning apparatus further includes a particulate matter processing module 70, the particulate matter processing module 70 has a processing chamber with an inlet in communication with the outlet of the particulate matter separation module 60, the processing chamber contains a sterilizing solution therein, and the particulate matter separated by the particulate matter separation module 60 enters the processing chamber for sterilization.
Specifically, the particle separation module 60 and the particle treatment module 70 are communicated through the particle separation pipeline 61, the particle size of most of the particle pollutants aggregated by the particle treatment module 70 through the sonic condensing module 20 is obviously increased, and the particle pollutants enter the particle separation module 60 to be separated. The separated large particle pollutants can enter the particle treatment module 70 along the particle pollutant separation pipeline 61, and the mixed solution of the sodium hydroxide solution with the concentration of 2% -4% and the sodium chloride with the concentration of 10% is contained in the treatment cavity of the particle treatment module 70, so that the nutrients of viruses and bacteria can be killed, and the secondary transmission of the bacterial viruses is avoided.
Further, an air outlet is provided in the middle of the upper end wall of the second coalescing chamber 21, the particulate matter separation module 60 is provided at the air outlet, the particulate matter treatment module 70 is located below the particulate matter separation module 60, and the particulate matter treatment module 70 is located in the second coalescing chamber 21.
The sound that conventional air purification device sent in automatic mode accords with the restriction of noise value, but the air purification device that this embodiment provided because the low frequency sound wave that sound wave aggregation module 20 sent has certain noise, especially when dust concentration is great, sound wave frequency that sound wave aggregation module 20 sent is higher, along with the amount of wind increases gradually, and the noise also gets bigger and bigger, influences user's use experience. It is therefore desirable to add a sound attenuation module 80 after the acoustic coalescing module 20 to reduce noise.
The specific structure of the muffler module 80, the specific distribution, assembly relationships, operation, etc. of the structures are described in detail below in conjunction with fig. 1 and 2.
Specifically, the air purification device further comprises a silencing module 80, wherein the silencing module comprises a sound insulation cotton 81 sealed between the sound wave condensation module 20 and the air outlet 102, a plurality of air passage 811 are arranged on the sound insulation cotton 81 at intervals, the silencing module 80 further comprises a plurality of open-pore sound absorption cotton 82, and the open-pore sound absorption cotton 82 is embedded in the air passage 811 in a one-to-one correspondence mode. Noise generated by the sound wave condensation module 20 and the fan 92 is isolated through the silencing module 80 arranged at the top end of the air purifying device, so that the noise output value of the air purifying device meets the standard, and the use experience is improved.
In an alternative embodiment, the silencer module 80 is comprised of a sound-insulating cotton 81 and an open-celled sound-absorbing cotton 82. The shape of the perforated sound-absorbing cotton 82 is spherical, the perforated sound-absorbing cotton 81 is embedded in the sound-insulating cotton 81, the perforated sound-absorbing cotton 82 is vertically placed, the perforated sound-absorbing cotton 82 is spherical, a containing cavity matched with the perforated sound-absorbing cotton 82 in shape and size is arranged in the air passage 811, the perforated sound-absorbing cotton 82 is embedded in the containing cavity, and the perforated sound-absorbing cotton 82 is internally provided with an air passage hole 821 with an axis parallel to the axis of the air passage 811.
In an alternative embodiment, a plurality of air-passing channels 811 are arranged on the soundproof cotton 81 in a staggered manner in the transverse and longitudinal directions, the cross section direction of the soundproof cotton 81 is perpendicular to the air flow direction, a plurality of rows of air-passing channels 811 are uniformly arranged on the soundproof cotton 81 at intervals along the cross section direction, each row of air-passing channels 811 respectively comprises a plurality of air-passing channels 811 uniformly arranged at intervals, and any adjacent three air-passing channels 811 in two adjacent rows of air-passing channels 811 are arranged in an equilateral triangle.
Through adopting above-mentioned design for arbitrary adjacent three trompil in the trompil of two adjacent rows of the cotton 82 of inhaling sound is equilateral triangle-shaped and distributes, and the cotton 82 of inhaling sound of trompil of two adjacent rows is the dislocation setting that inserts promptly, and equilateral triangle-shaped distributes makes the trompil inhale the cotton 82 arrange compactly, can arrange the cotton 82 of inhaling sound of the trompil that the most under the equal area, in order to realize maximize amortization. Due to the composite action of the sound insulation cotton 81 and the perforated sound absorption cotton 82, noise can be reduced as much as possible on the premise of ensuring air quantity, bad experiences brought by the noise to users can be remarkably reduced, and further user experience is improved.
In an alternative embodiment, as shown in fig. 1, the air purifying device further includes a fan module 90, where the fan module 90 includes a fan cavity 91 and a fan 92 disposed in the fan cavity 91, an air inlet end of the fan cavity 91 is communicated with an air outlet end of the acoustic wave condensation module 20, an air outlet end of the fan cavity 91 is communicated with an air outlet 102, and the silencing module 80 is disposed in the fan cavity 91 and between the fan 92 and the air outlet 102. The silencer module 80 is disposed between the fan 92 and the air outlet 102, so that noise from the acoustic condensing module 20 can be reduced, and sound generated by the fan 92 can be reduced. Through the amortization module 80 that sets up in the upper end of fan 92, can eliminate the noise that comes from the sound wave and gathers the produced noise of module 20 and the sound that fan 92 sent, improve user's use experience.
In the embodiment, the particle size of the small molecular particle pollutants in the air is increased in the device by utilizing the coupling type coalescence device, so that the particle pollutants can be better separated, and the power of the sonic generator of the sonic condensing module 20 can be controlled according to the dust concentration, so that the particles can be sufficiently condensed. The noise elimination module 80 is arranged at the top end of the air purification device and is used for isolating noise generated by the sound wave condensation module 20 and the fan 92, so that the noise output value of the purifier meets the standard.
According to an embodiment of the present invention, as shown in fig. 1 and 4, in another aspect, the present invention further provides a control method of an air purifying apparatus according to any one of the above embodiments, the control method including the steps of:
step S101, receiving an air purifying device starting signal;
Step S102, controlling the coagulant injection unit 12 to start, injecting coagulant into the first coalescence chamber 11 to promote the aggregation of the particles in the air entering the first coalescence chamber 11;
Step S103 of controlling the sound wave generating unit 22 to start, generating sound waves to promote re-agglomeration of particulate matters in the air entering the second coalescing chamber 21 from the first coalescing chamber 11.
In order to increase the particle size of the contaminants as much as possible, the present embodiment employs both the sonic condensing module 20 and the chemical condensing module 10.
In an alternative embodiment, as shown in fig. 1, 4 and 5, the coagulant injection unit 12 is controlled to be started, and the coagulant is injected into the first coalescing chamber 11 to promote the agglomeration of the particulate matters in the air entering the first coalescing chamber 11, that is, the step S102 specifically includes:
first concentration information of particulate matter in the air that enters the first coalescing chamber 11 is acquired, and it is determined whether the first concentration information is greater than or equal to a first concentration threshold:
If so, the coagulant injection unit 12 is controlled to inject coagulant into the first coalescing chamber 11 at a first injection amount, and if not, the coagulant injection unit 12 is controlled to inject coagulant into the first coalescing chamber 11 at a second injection amount, wherein the first injection amount is greater than the second injection amount.
By controlling the injection amount of the coagulant injection unit 12 based on the first concentration information detected by the first concentration detection unit 40, the coagulation effect on fine particulate matter can be effectively ensured while avoiding waste of resources.
In one embodiment, the first concentration threshold is 20mg/cm 3, the first spray amount is 30mL/h, and the second spray amount is 20mL/h. If the first concentration information is determined to be 20mg/cm 3 or more, the coagulant injection unit 12 is controlled to inject coagulant into the first coalescing chamber 11 at an injection amount of 30mL/h, and if the first concentration information is determined to be less than 20mg/cm 3, the coagulant injection unit 12 is controlled to inject coagulant into the first coalescing chamber 11 at an injection amount of 20mL/h.
In an alternative embodiment, as shown in fig. 1, fig. 4 and fig. 6, the sound wave generating unit 22 is controlled to be activated to generate sound waves to promote re-agglomeration of the particulate matters in the air entering the second coalescing chamber 21 from the first coalescing chamber 11, that is, step S103 specifically includes:
second concentration information of particulate matter in the air that enters the second coalescing chamber 21 is acquired, and it is determined whether the second concentration information is greater than or equal to a second concentration threshold:
If yes, the sound wave generating unit 22 is controlled to generate sound waves with a first sound wave frequency and a first sound pressure level, and if not, the sound wave generating unit 22 is controlled to generate sound waves with a second sound wave frequency and a second sound pressure level, wherein the first sound wave frequency is larger than the second sound wave frequency and the first sound pressure level is larger than the second sound pressure level.
The coupling coalescence device formed by combining the chemical condensation module 10 and the acoustic wave condensation module 20 is utilized in the embodiment, so that the particle size of fine particle pollutants in the air can be increased, and the purification efficiency of the fine particle pollutants can be improved. The magnitude of the sonic power of the sonic condensing module 20 is controlled based on the data fed back by the second concentration detecting unit 50 to ensure that the fine particulate contaminants are sufficiently condensed.
In one embodiment, the first concentration threshold is 20mg/cm 3, the first sound wave frequency is 2.5kHz, the first sound pressure level is 200dB, and the second sound wave frequency is 1.5kHz, and the first sound pressure level is 120dB. If the second density information is judged to be greater than or equal to 20mg/cm 3, the sound wave generating unit 22 is controlled to generate sound waves with the frequency of 2.5kHz and the sound pressure level of 200dB, and if the second density information is judged to be less than 20mg/cm 3, the sound wave generating unit 22 is controlled to generate sound waves with the frequency of 1.5kHz and the sound pressure level of 120dB.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (14)
1. An air cleaning apparatus, comprising:
a housing (100) provided with an air inlet (101) and an air outlet (102);
A chemical condensation module (10) disposed in the housing (100), the chemical condensation module (10) including a first coalescing chamber (11) having an air inlet end in communication with the air inlet (101) and a coagulant injection unit (12) disposed in the first coalescing chamber (11), the coagulant injection unit (12) being adapted to inject coagulant into the first coalescing chamber (11) to promote agglomeration of particulate matter in air entering the first coalescing chamber (11);
A sonic condensing module (20) comprising a second condensing chamber (21) arranged between the first condensing chamber (11) and the air outlet (102) and a sonic generating unit (22) arranged in the second condensing chamber (21), the sonic generating unit (22) being adapted to generate sonic waves to cause re-agglomeration of particulate matter in the air entering the second condensing chamber (21) from the first condensing chamber (11);
The chemical coagulation module (10) further comprises:
The gas flow direction distribution device comprises a plurality of flow distribution units (13), wherein the flow distribution units (13) are distributed in a first aggregation chamber (11) at intervals along the gas flow direction, each flow distribution unit (13) comprises a flow distribution plate (131) and a plurality of flow distribution channels (132) which are arranged on the flow distribution plate (131) at intervals, and the flow distribution channels (132) on two adjacent flow distribution plates (131) are staggered with each other along the gas flow direction.
2. An air cleaning apparatus according to claim 1, wherein said coagulant injection unit (12) is provided across said first coalescing chamber (11) in a gas flow direction, said coagulant injection unit (12) dividing said first coalescing chamber (11) into a first space and a second space communicating with each other;
The first space is communicated with the air inlet (101), the second space is communicated with the second merging chamber (21), and the aperture d 1 of a diversion channel (132) of the diversion unit (13) in the first space is smaller than the aperture d 2 of the diversion channel (132) of the diversion unit (13) in the second space.
3. An air cleaning device according to claim 2, wherein the distance between two adjacent flow dividing channels (132) on the same flow dividing plate (131) is between 5mm and 8 mm;
and/or d 1 is between 2mm and 4mm and d 2 is between 4mm and 6 mm.
4. An air cleaning apparatus according to any one of claims 1 to 3, wherein said first coalescing chamber (11) has a coalescing chamber housing protruding outward from the middle and gradually contracting toward both ends, said coalescing agent ejection unit (12) being provided at a middle position of said coalescing chamber housing;
And/or the coagulant injection unit (12) comprises a plurality of spray heads connected in series with each other through pipelines, and the spray heads are suitable for spraying the coagulant into the first coalescence chamber (11) in a mist mode.
5. An air cleaning device according to any one of claims 1 to 3, further comprising:
The primary filtering unit (30) is arranged between the air inlet (101) and the chemical condensation module (10) and is used for primarily filtering particulate matters in the air;
a first concentration detection unit (40) disposed between the primary filtration unit (30) and the chemical coagulation module (10) and adapted to detect concentration information of particulate matter in the air flowing into the first coalescing chamber (11).
6. An air cleaning device according to any one of claims 1 to 3, wherein the sound wave generating unit (22) comprises a number of sound wave generators arranged at intervals within the second coalescing chamber (21);
And/or the sound wave generating unit (22) is adapted to generate sound waves of 1000Hz-3000 Hz.
7. An air cleaning device according to any one of claims 1 to 3, further comprising:
And a second concentration detection unit (50) provided between the chemical condensation module (10) and the acoustic wave condensation module (20) and adapted to detect concentration information of particulate matter in the air flowing into the second condensation chamber (21).
8. An air cleaning device according to any one of claims 1 to 3, further comprising:
The particle separation module (60) is arranged at the air outlet end of the sound wave condensation module (20), and the particle separation module (60) is suitable for separating particles in air discharged from the air outlet end of the sound wave condensation module (20);
and the particle treatment module (70) is provided with a treatment cavity with an inlet communicated with the outlet of the particle separation module (60), the treatment cavity is internally provided with a sterilizing solution, and particles separated by the particle separation module (60) enter the treatment cavity for sterilization.
9. An air cleaning device according to any one of claims 1 to 3, further comprising:
the sound attenuation module (80) comprises a sound insulation cotton (81) which is blocked between the sound wave condensation module (20) and the air outlet (102), a plurality of air passage channels (811) are arranged on the sound insulation cotton (81) at intervals, the sound attenuation module (80) further comprises a plurality of open-pore sound absorption cotton (82), and a plurality of open-pore sound absorption cotton (82) are embedded in a plurality of the air passage channels (811) in a one-to-one correspondence mode.
10. The air purification device according to claim 9, wherein the perforated sound absorbing cotton (82) is spherical, a containing cavity matched with the perforated sound absorbing cotton (82) in shape and size is arranged in the air passage (811), the perforated sound absorbing cotton (82) is embedded in the containing cavity, and an air passage hole (821) with an axis parallel to the axis of the air passage (811) is arranged in the perforated sound absorbing cotton (82).
11. The air cleaning device according to claim 9, the air purification device is characterized by further comprising:
The fan module (90) comprises a fan cavity (91) and a fan (92) arranged in the fan cavity (91), wherein an air inlet end of the fan cavity (91) is communicated with an air outlet end of the sound wave condensation module (20), the air outlet end of the fan cavity (91) is communicated with an air outlet (102), and the silencing module (80) is arranged in the fan cavity (91) and located between the fan (92) and the air outlet (102).
12. A control method of an air cleaning apparatus according to any one of claims 1 to 11, characterized in that the control method comprises:
receiving an air purifying device starting signal;
Controlling the coagulant injection unit (12) to start, injecting coagulant into the first coalescence chamber (11) to promote the aggregation of the particles in the air entering the first coalescence chamber (11);
The sound wave generating unit (22) is controlled to be started to generate sound waves so as to promote the re-agglomeration of the particles in the air entering the second coalescing chamber (21) from the first coalescing chamber (11).
13. The control method of an air cleaning apparatus according to claim 12, wherein said controlling the coagulant injection unit (12) to start injecting coagulant into the first coalescing chamber (11) to promote agglomeration of particulate matter in air entering the first coalescing chamber (11) specifically comprises:
acquiring first concentration information of particulate matters in air entering a first coalescence chamber (11), and judging whether the first concentration information is larger than or equal to a first concentration threshold value:
If so, controlling the coagulant injection unit (12) to inject coagulant into the first coalescence chamber (11) in a first injection amount, and if not, controlling the coagulant injection unit (12) to inject coagulant into the first coalescence chamber (11) in a second injection amount, wherein the first injection amount is larger than the second injection amount.
14. The control method of an air cleaning apparatus according to claim 12, wherein the controlling the sound wave generating unit (22) to generate sound waves to promote re-agglomeration of particulate matter in the air entering the second coalescing chamber (21) from the first coalescing chamber (11) specifically comprises:
Acquiring second concentration information of particulate matters in air entering a second coalescing chamber (21), and judging whether the second concentration information is greater than or equal to a second concentration threshold value:
If yes, the sound wave generating unit (22) is controlled to generate sound waves with first sound wave frequency and first sound pressure level, and if not, the sound wave generating unit (22) is controlled to generate sound waves with second sound wave frequency and second sound pressure level, wherein the first sound wave frequency is larger than the second sound wave frequency, and the first sound pressure level is larger than the second sound pressure level.
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| CN103344017B (en) * | 2013-06-17 | 2016-04-13 | 山西埃尔气体系统工程有限公司 | A kind of office and life building air purification type oxygen-enriching device |
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