CN203635013U - Compound electrostatic air purification device with high clogging capacity and high efficiency - Google Patents
Compound electrostatic air purification device with high clogging capacity and high efficiency Download PDFInfo
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- CN203635013U CN203635013U CN201320834013.XU CN201320834013U CN203635013U CN 203635013 U CN203635013 U CN 203635013U CN 201320834013 U CN201320834013 U CN 201320834013U CN 203635013 U CN203635013 U CN 203635013U
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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
Abstract
The utility model discloses a compound electrostatic air purification device with high clogging capacity and high efficiency. The compound electrostatic air purification device orderly comprises an early-effect filter net, a carbon brush charge region, an electrostatic precipitation area, an air filter and an ash bucket, wherein differential pressure transducers are arranged at two ends of the air filter; a material level sensor is arranged inside the ash bucket. The compound electrostatic air purification device disclosed by the utility model has the advantages that 1. charged particles are collected in the electrostatic precipitation area, the air filter is protected, and the service life of the air filter is prolonged; 2. the clogging capacity of the air filter is reduced, a pressure drop is reduced, and the power is saved; 3. the exposure time of the air together with dust and particles on the air filter is shortened, and secondary pollution of air together with a pollutant gas in the particle filtering process and bacterial viruses is alleviated; 4. the filtering efficiency of a filter material region is not sensitive to air variation, and the influence on the overall dust removal efficiency of the system caused by properly increasing the air volume is limited. Thus, the purification system is applicable to a building with variable air volume.
Description
Technical field
The utility model belongs to air-conditioning technique field, particularly a kind of efficient, energy-conservation, economy, the air filtration and purification apparatus of environmental protection.
Background technology
Healthy and the operating efficiency of the particle serious harm human body in architectural environment, as asthma, breathing problem etc.In the middle of heating ventilation air-conditioning system, conventional purification means are media filtrations at present, as high efficiency particulate air filter (HEPA), bag filter.But the filter of this class own has following shortcoming, comprise the problems such as filtering material particle layer pollutes, and pressure drop is excessive.Along with the increase filtering material filter surface meeting attaching particles layer of filtration time, stratum granulosum thickness is little but pressure drop is large; This stratum granulosum can pollute the fresh air by filter, and when airborne particle is filtered, the content of its gaseous contaminant can increase.There is scholar to verify by experiment the contamination of dirty filter for cleaned air, as [1] Clausen, G..2004.Ventilation filters and indoor air quality:a review of research from the International Centre for Indoor Environment and Energy.Indoor air, 14 (7): 202-207.Because the effect filtering material filter pressure drop of stratum granulosum is larger, operation a period of time is caused the significantly minimizing of systematic air flow; The expense of filtering material filter is higher, and changing high efficiency particulate air filter for some occasion by design is a no small expense.Therefore, much constructing operation mechanism changes rough filter in filter or use not according to design code and, to substitute high efficiency particulate air filter, causes indoor air quality variation.For the above deficiency of filtering material filter, some buildings (especially with serious pollution industrial building) adopt electrostatic precipitator to substitute filtering material filter.Electrostatic precipitator pressure drop is very little, and the stratum granulosum on collecting plate can not bring pressure drop to increase; Fresh air is compared little a lot with filtering material filter with the contact probability of collecting plate stratum granulosum, less if collecting plate cleans proper pollution meeting.But electrostatic precipitator has two large obstacles in the application of building, the one, operation maintenance difficulty is large compared with filtrate deduster, and the 2nd, be difficult to reach more than 90% for its efficiency of submicron particles.Be directed to two kinds of air purifying process pluses and minuses separately, many scholars are devoted to the research of static-filtrate Combined air cleaning system.As [2] Park, J.H., Yoon, K.Y., Hwang, J., 2011.Removal of submicron particles using a carbon fiber ionizer-assisted medium air filter in a heating, ventilation, and air-conditioning (HVAC) system.Building and Environment, 46 (8): 1699-1708. (this work sutdy the combined type system of electrostatic precipitator with fabric filter coupling, this system can increase substantially the purification efficiency of submicron particles); [3] Huang, R., Agranovski, I., Pyankov, O., Grinshpun, S., 2008.Removal of viable bioaerosol particles with a low-efficiency HVAC filter enhanced by continuous emission of unipolar air ions.Indoor air, 18 (2): 106-112. (electrostatic precipitator and the rough filter composite filtering equipment purification efficiency for bio-aerosol particles has been tested in this work, with respect to improving 4 to 5 times without this system effectiveness of electrostatic filter device).Combined type system is maximized favourable factors and minimized unfavourable ones with respect to traditional approach, has the following advantages.Static electric field filters bulky grain, efficient filtrate area filter granule, and entire system pressure drop rate of rise is less than single filter material filter; Static electric field makes particle charged, improves the filter efficiency of filtrate; Because the particle deposition that has filter material surface of static electric field reduces, the possibility of polluting fresh air reduces; Under the prerequisite of guaranteed efficiency, system pressure drop minimizing and filter replacement cycle are elongated, and Technical Economy significantly improves; Electrostatic precipitator discharges certain density anion in processed air, and it is conducive to health.Common composite static electric cleaner has some shortcomings to cause its application to be restricted in the market.In a lot of composite static electric cleaners, electric field region adopts needle point-electrode plate structure, and this structure is high for the dust-filtering efficiency of the large particle diameter of industrial premises middle and high concentration.But in civil buildings, dust concentration particle diameter low and particle is little, therefore common needle point-polar-plate-type combined electrostatic dust separator static electric field efficiency is low, directly cause filter material surface dust deposit amount below excessive, overall advantage is not obvious.Therefore, must improve electric plot structure to guarantee the efficiency in electrostatic precipitation region.
Utility model content
The purpose of this utility model is to provide the high efficiency Combined Electrostatic air cleaning unit of a kind of high dust containing capacity, in solution prior art, electrostatic precipitator static electric field efficiency is low, running energy consumption is high, and cost of investment is large, composite dedusting system low problem in service life.
The utility model is achieved by the following technical solution:
The high efficiency Combined Electrostatic air cleaning unit of a kind of high dust containing capacity, comprises: primary efficient filter screen, carbon brush charging area, electrostatic precipitation district, air cleaner, ash bucket, differential pressure pickup is equipped with at air cleaner two ends, is provided with level transducer in ash bucket successively.
Electrostatic precipitation district has multiple metal grids to form metal grid collecting plates, and each metal grid central authorities are provided with cylinder discharge electrode, and metal grid wall forms earth electrode, and cylinder discharge electrode forms sparking electrode.The length of side numerical value of described metal grid is 50-100mm.Described metal grid collecting plate is tabular or the tabular metallic plate of fold.
Described air cleaner is high efficiency particulate air filter or medium effeciency filter.
Described carbon brush charging area is made up of carbon brush electrode and grounding plate.
The beneficial effects of the utility model are: the one, and charged particle is collected in electrostatic precipitation district, protection air cleaner, the service life of prolongation air cleaner, because discharge electrode is little to the distance of collecting plate, therefore the large dust-collecting efficiency of electric-field intensity is high; The 2nd, the dust containing capacity of minimizing air cleaner, reduces pressure drop, saves power, and the 3rd, reduce the open-assembly time of air with dust on air cleaner and particle, reduce air same contaminant gases in particle filtering process, the secondary pollution of bacterial virus; The 4th, filtrate area filter efficiency changes insensitive for air quantity, and suitable increase air quantity is limited for the impact of entire system efficiency of dust collection, and this cleaning system is suitable for the building of variable air rate.
User can select high efficiency particulate air filter or medium effeciency filter according to oneself requirement, the maximum operating cost that reduces on the basis that guarantees IAQ.
This patent adopts the structure of metal grid to expand metal specific collection area.This structure also can increase charging particle amount and space negative ion concentration.
The two ends of air cleaner arrange single differential pressure pickup, detect the duty of filter and electrostatic equipment simultaneously, and assurance system is moved lastingly.
Accompanying drawing explanation
Fig. 1 is the high efficiency Combined Electrostatic air cleaning unit of the high dust containing capacity of the utility model structural representation;
Fig. 2 is tabular metal grid collecting plate structural representation;
Fig. 3 is fold plate-shape metal grid collecting plate structural representation;
Wherein, 1: primary efficient filter screen; 2: high pressure carbon brush electrode; 3: grounding plate; 4: cylinder discharge electrode; 5: metal grid collecting plate; 6: air cleaner; 7: differential pressure pickup; 8: pressure pipe; 9: level transducer; 10: ash bucket; 11: earthing or grounding means.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done further to set forth.
As shown in Figure 1, air is flowed through successively with lower device, particle, and gaseous contaminants etc. are removed: primary efficient filter screen 1; Carbon brush electrode 2 and grounding plate 3 form carbon brush charging area; The electrostatic precipitation district that metal grid collecting plate 5 and cylinder discharge electrode 4 form; Air cleaner 6; Differential pressure pickup 7; Level transducer 9; Ash bucket 10.
Contaminated air obtains preliminary purification (for example hair, insect etc.) through primary efficient filter screen 1; Enter the rear most particle in carbon brush charging area 2 by charged; Electrostatic precipitation district can apply highfield most of electrically charged particle is removed, and the less and unsaturated particle of carrying capacity can supplement carrying capacity in electrostatic precipitation district; Air cleaner 6 continues to catch fine particle, and ash bucket 10 is collected the particle that destatics side by side region accumulation.
Electrostatic precipitation district has several metal grids to form, and metal grid central authorities are provided with cylinder discharge electrode.Metal grid wall forms earth electrode, and cylinder discharge electrode forms sparking electrode.In same pipeline, the number of metal grid is more, and the diameter of cylinder discharge electrode is less, and electric-field intensity and current density increase.The dust containing capacity of earth electrode and stratum granulosum thickness are larger, and current value reduces and system dust removing Efficiency Decreasing.For the higher occasion of granule density, can adopt Wrinkled metallic plate to make metal grid.Fold is tabular can increase specific collection area, improves operational efficiency and time.
High efficiency particulate air filter for its filter efficiency of electrically charged particle of 0.2um particle diameter more than 99.9%; Medium effeciency filter is for its filter efficiency of electrically charged particle of 0.2um particle diameter more than 90%, and both prices differ larger, and user can select filter type according to specific needs.But charged middle effect filtrate is to be greatly improved for the more non-electrician's condition of removal efficiency of the fine particle of charged particle.
6 two sections of air cleaners are equipped with differential pressure pickup 7, this differential pressure pickup per half an hour of image data, the efficiency of monitoring electrostatic precipitation and air cleaner dedusting.If pressure reduction overrate, illustrates that filter should change; As pressure reduction reaches rated value within a short period of time, illustrate that electrostatic precipitation region effect is undesirable, should transform.In ash bucket 10, level transducer 9 monitors the thing position height of layer of particulate matter.
Be provided with primary efficient filter screen 1 at entrance place, its effect is to remove polluter larger in air protection filtering and purifying (such as hair and insect etc.) below.Be the carbon brush charging area that carbon brush electrode 2 and grounding plate 3 form in the downstream of primary efficient filter screen 1, its Main Function is to make the most of charging particles of incoming flow to improve the efficiency of dust collection in electro static filtering district.Electro static filtering district is made up of cylinder electrode 4 and metal grid 5, and its effect is to catch electrically charged particle and make the particle of low carrying capacity continue charged.Metal grid number, cylinder electrode size and collecting plate area effect efficiency of dust collection and degree of charge.Consider the geometry (diameter 0.2-1mm) of common discharge electrode, for the length of side numerical value of flash-over characteristic metal grid that guarantees system is generally 50-100mm.The effect of air cleaner 6 is to filter compared with small size particle, and can adopt high efficiency particulate air filter or medium effeciency filter.High efficiency particulate air filter is applicable to the place (as high-end residential and operating room etc.) that air quality is had relatively high expectations, and medium effeciency filter is applicable to air quality and requires lower place (as ordinary residence and industrial premises etc.).Differential pressure pickup 7 is equipped with to detect filter pressure reduction in air cleaner 6 two ends.
This utility model operation principle is as follows: contaminated air, under the effect of HVAC system medium power equipment, successively by each filtering purifying equipment, then is discharged into and in the interior space, creates new environment.First air by primary efficient filter screen 1, filters larger particle and pollutant (as insect and hair etc.) and protects follow-up air cleaning unit.Entered into by preliminary filtered air the carbon brush region of discharge that carbon brush discharge electrode 2 and metal collecting plate 3 form, under the condition of normal temperature and pressure, the high energy electron that high pressure carbon brush electrode discharge generation is a large amount of, high energy electron impinging air produces active negative ion, high energy electron and active negative ion can make particle charged, part charged particle moves to metal collecting plate and realizes electro static filtering effect, and the charged particle that all the other are most and high energy electron and active negative ion enter electrostatic precipitation district.Cylinder electrode 4 in electrostatic precipitation district and metal grid collecting plate 5 form high-intensity electric field, and under the effect of electric field force, electrically charged particle is effectively removed.Particle is charged increases substantially the filter efficiency of air cleaner 6 with air middle and high concentration anion; Active negative ion can be with the pernicious gases such as the VOC generation innocuous substance that reacts.
The air of being processed by carbon brush electrode enters particle and filters body region, the air electrostatic precipitation region of first flowing through, then flow through filtering material filter.User can select different air cleaner module, high efficiency particulate air filter and medium effeciency filter as required.Electrostatic precipitation district is made up of cylinder electrode 4 and metal grid 5, has 4 effects.The one, collect in a large number charged particle, protection air cleaner 6, the service life of prolongation air cleaner 6; The 2nd, the dust containing capacity of minimizing high efficiency particulate air filter air cleaner 6, reduces pressure drop, saves power, and the 3rd, reduce the open-assembly time of air with dust and particle on air cleaner 6, reduce air gas in particle filtering process, the secondary pollution of bacterial virus; The 4th, charged effect, can continue to increase carrying capacity to improve filtrate capturing efficiency at the lower fine particle of carbon brush charging area carrying capacity in electrostatic precipitation district.Air enters air cleaner 6, and superfine particulate matter is filtered by it.
The specific constructive form of air cleaner 6 is (as corrugation density, depth of folding etc.) and the design parameter of cylinder electrode 4 and metal grill 5 (as body diameter and length, metal grill number, metal grill dust-collecting area etc.) need determine according to actual field condition and operating mode, technology of numerical simulation (as CFD) is to provide the effective means of design considerations.High efficiency particulate air filter air cleaner 6 can be made into integrated apparatus with electro static filtering district if desired.
Differential pressure pickup is equipped with at the two ends of air cleaner 6, and signal is reached to building control centre, detects integrated air filtration system.If pressure reduction too high (exceeding 3 times of initial resistances), illustrates that filter should change; If pressure reduction is zero substantially, illustrate that filter is blocked; If pressure reduction reaches bigger numerical in the short period of time, illustrate that preposition electrostatic system is poor for current contaminated air effect, should redesign and transform electrostatic system.Particle filtering module below is provided with ash bucket to remove dust, and this filtration system is installed therefore ash bucket volume can not be too large in air channel, therefore easily produces airborne dust.Ash bucket is provided with level transducer to detect ash bucket control of dust amount, the reentrainment of dust producing to prevent in ash bucket control of dust amount too much.
Although the Main Function of this system is to remove particle, it has the ability of removing gaseous contaminant.First, high-field electrode discharge generation high voltage electric field, under electric field and high-velocity electrons impact, the structure of gaseous contaminant and virus and bacteria can be destroyed; Secondly, a large amount of particles are removed, and gaseous contaminant and virus and bacteria have lost the carrier of relying and relying on, and it threatens the probability of human health greatly to reduce; The 3rd, this system is conducive to improve the raising of follow-up professional device (as photocatalyst and UV purification, charcoal absorption) efficiency for the primary purifying of gaseous contaminant and virus and bacteria.But electrion region can produce ozone.Glass or chemical fiber filter device with stratum granulosum have higher removal efficiency (can reach 40%) for ozone, and the occasion of having relatively high expectations for ozone concentration can be provided with at particulate filter rear portion charcoal absorption filter.
Air is through primarily efficient filter, and the processes such as electro static filtering are discharged in enclosure space.User can select different filter types (as high to air quality requirement, select HEPA, but cost to be also high according to the character of interior space particle and interior space instructions for use; Air quality is required generally, select common medium effeciency filter, but cost to decrease).
Although by reference to the accompanying drawings the utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; rather than restrictive; for the person of ordinary skill of the art; not departing under the prerequisite of utility model principle, can also make some improvements and modifications, these improvements and modifications all belong to protection domain of the present utility model.
Claims (6)
1. the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity, it is characterized in that, comprise successively: primary efficient filter screen, carbon brush charging area, electrostatic precipitation district, air cleaner, ash bucket, differential pressure pickup is equipped with at air cleaner two ends, is provided with level transducer in ash bucket.
2. the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity according to claim 1, it is characterized in that, electrostatic precipitation district has multiple metal grids to form metal grid collecting plate, each metal grid central authorities are provided with cylinder discharge electrode, metal grid wall forms earth electrode, and cylinder discharge electrode forms sparking electrode.
3. the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity according to claim 2, is characterized in that, the length of side numerical value of described metal grid is 50-100mm.
4. according to the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity described in claim 2 or 3, it is characterized in that, described metal grid collecting plate is tabular or the tabular metallic plate of fold.
5. the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity according to claim 1, is characterized in that, described air cleaner is high efficiency particulate air filter or medium effeciency filter.
6. the high efficiency Combined Electrostatic air cleaning unit of high dust containing capacity according to claim 1, is characterized in that, described carbon brush charging area is made up of carbon brush electrode and grounding plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320834013.XU CN203635013U (en) | 2013-12-17 | 2013-12-17 | Compound electrostatic air purification device with high clogging capacity and high efficiency |
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| CN201320834013.XU CN203635013U (en) | 2013-12-17 | 2013-12-17 | Compound electrostatic air purification device with high clogging capacity and high efficiency |
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| CN203635013U true CN203635013U (en) | 2014-06-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691240A (en) * | 2013-12-17 | 2014-04-02 | 天津大学 | High-dust holding capacity and high-efficiency composite electrostatic air purification device |
| CN107051075A (en) * | 2017-01-18 | 2017-08-18 | 合肥杰通环境技术有限公司 | A kind of city haze processing unit and processing application method |
| CN110076003A (en) * | 2019-05-29 | 2019-08-02 | 昆明铁路局集团科学技术研究所 | A kind of centralized intelligence smog dust electrostatic dust pelletizing system and method |
-
2013
- 2013-12-17 CN CN201320834013.XU patent/CN203635013U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691240A (en) * | 2013-12-17 | 2014-04-02 | 天津大学 | High-dust holding capacity and high-efficiency composite electrostatic air purification device |
| CN107051075A (en) * | 2017-01-18 | 2017-08-18 | 合肥杰通环境技术有限公司 | A kind of city haze processing unit and processing application method |
| CN110076003A (en) * | 2019-05-29 | 2019-08-02 | 昆明铁路局集团科学技术研究所 | A kind of centralized intelligence smog dust electrostatic dust pelletizing system and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20141217 |
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| EXPY | Termination of patent right or utility model |