WO2008007592A1 - Collecteur de poussière - Google Patents

Collecteur de poussière Download PDF

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Publication number
WO2008007592A1
WO2008007592A1 PCT/JP2007/063393 JP2007063393W WO2008007592A1 WO 2008007592 A1 WO2008007592 A1 WO 2008007592A1 JP 2007063393 W JP2007063393 W JP 2007063393W WO 2008007592 A1 WO2008007592 A1 WO 2008007592A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
particles
gas
unit
treated
Prior art date
Application number
PCT/JP2007/063393
Other languages
English (en)
Japanese (ja)
Inventor
Toshio Tanaka
Kanji Motegi
Ryuji Akiyama
Tooru Fujimoto
Yasuhiro Oda
Kenkichi Kagawa
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2008007592A1 publication Critical patent/WO2008007592A1/fr

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Classifications

    • 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
    • F24F13/28—Arrangement or mounting of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/18—Particle separators, e.g. dust precipitators, using filtering belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/69—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side without movement with respect to the filter elements, e.g. fixed nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/011—Prefiltering; Flow controlling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/28—Making use of vacuum or underpressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/30—Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • the present invention relates to a dust collecting device for removing airborne particles to be treated such as air and combustion exhaust gas.
  • a dust collector has been used to collect dust and dust in indoor air, dust in combustion exhaust gas, and the like.
  • an electrostatic dust collector as disclosed in Patent Document 1 As this dust collector, for example, an electrostatic dust collector as disclosed in Patent Document 1 is known.
  • This electrostatic precipitator charges the suspended particles to be collected in advance and collects the charged suspended particles with an electric attractive force.
  • the electrostatic precipitator of Patent Document 1 includes an ion collector for charging floating particles, and a dust collector disposed downstream of the ion collector. In the dust collection section, flat dust collection electrode plates and counter electrode plates are alternately arranged. In this electrostatic precipitator, suspended particles that are positively (+) charged at the ion collector are collected by a dust collecting electrode plate that is a negative electrode plate of the dust collector.
  • HEPA High Efficiency Particulate AirFilter
  • the gas to be treated is sent to the high-performance filter, and the suspended gas is removed by filtering the gas to be treated with a high-performance filter.
  • Patent Document 1 Japanese Patent Laid-Open No. 6-254437
  • the present invention has been made in view of the strong point, and an object of the present invention is to provide a small dust collector capable of collecting even fine particles and having a small pressure loss of the gas to be treated. There is to do.
  • a first invention is directed to a dust collector. And a gas passage through which the gas to be treated flows
  • agglomerated part (70) that aggregates suspended particles (100) in the gas to be treated to form agglomerated particles (101) and scatters the formed agglomerated particles (101) in the gas to be treated (70 )
  • a collecting part (50) that is disposed downstream of the aggregation part (70) in the gas passage (23) and collects the aggregated particles (101) in the gas to be treated that has passed through the aggregation part (70).
  • the suspended particles (100) in the air to be treated are once collected in the aggregation part (70).
  • the collected plurality of suspended particles (100) aggregate to form aggregated particles (101) that are aggregates of the plurality of suspended particles (100).
  • the agglomerated particles (101) reach a certain size, the agglomerated part (70) is separated and flows to the collecting part (50) together with the gas to be treated.
  • fine suspended particles (100) with a particle size of about 1 ⁇ m collected in the agglomerated part (70) become part of the relatively large agglomerated particles (101) and are collected in the collecting part (50 ).
  • the collection unit (50) collects the aggregated particles (101) flowing from the collection unit (70) together with the gas to be processed.
  • the second invention is the agglomeration operation for aggregating floating particles (100) in the gas to be treated in the aggregating part (70) to form aggregated particles (101) in the first invention.
  • a scattering operation for scattering the agglomerated particles (101) formed in the agglomerated part (70) into the gas to be treated is performed.
  • the aggregation operation and the scattering operation are performed by the dust collector.
  • aggregated particles (101) are formed by aggregating a plurality of suspended particles (100).
  • the agglomerated particles (101) are peeled off by the agglomerated part (70) and sent to the collecting part (50) together with the gas to be processed that passes through the agglomerated part (70).
  • the aggregating part (70) includes a particle charging part (71) for charging the suspended particles (100) in the gas to be treated, A particle capturing unit (74) that captures and aggregates the suspended particles (100) charged by the particle charging unit (71) by an electric attractive force.
  • the suspended particles (100) in the gas to be treated are charged positively (+) or negatively (-) by the particle charging portion (71).
  • the charged suspended particles (100) are attracted and captured by the particle capturing part (74) by an electric attractive force.
  • the particle trapping part (74) the plurality of trapped suspended particles (100) are aggregated to form aggregated particles (101).
  • the particle trapping part (74) includes a first electrode (75) and a second electrode (76), and the first electrode (75) By forming an electric field between the second electrodes (76), the suspended particles (100) charged by the particle charging unit (71) are adhered to the first electrode (75) and aggregated. It is composed.
  • the fourth invention in the particle trapping part (74), by applying a potential difference between the first electrode (75) and the second electrode (76), the first electrode (75) and the second electrode An electric field is formed in the space between (76).
  • the suspended particle (100) is positively (+) charged by the particle charging unit (71)
  • the charged suspended particle (100) is attracted to the first electrode (75) on the negative electrode side.
  • the suspended particle (100) is negatively (one) charged by the particle charging unit (71)
  • the charged suspended particle (100) is attracted to the first electrode (75) on the positive electrode side.
  • the trapped suspended particles (100) aggregate together to form aggregated particles (101).
  • the contact surface of the first electrode (75) with the air to be treated is subjected to a surface treatment for promoting separation of the aggregated particles (101). It is to be done.
  • the surface of the first electrode (75) is subjected to a surface treatment for promoting the separation of the aggregated particles (101).
  • the surface treatment include a process of finishing the surface into a mirror surface and a process of reducing the surface free energy by forming a water-repellent film, a fluorine resin film, or the like.
  • a large number of projection (78) forces S are formed on the contact surface of the first electrode (75) with the air to be treated.
  • the projection (78) is formed on the surface of the first electrode (75).
  • the electric field formed between the first electrode (75) and the second electrode (76) is concentrated in the vicinity of the protrusion (78). Therefore, the suspended particles (100) that have moved from the particle charging unit (71) to the particle trapping unit (74) are concentrated and attached in the vicinity of the protrusion (78) of the first electrode (75). That is, in the first electrode (75), aggregated particles (101) are formed in the vicinity of the protrusions (78). Aggregated particles (101) that have grown to a certain size are peeled off from the first electrode (75) by the flow of the gas to be treated.
  • the particle trapping portion (74) includes a plurality of gas flow paths (77) through which the gas to be processed passes and the first electrode (75) and the first electrode. It is formed by two electrodes (76), and the cross-sectional area of each gas flow path (77) gradually narrows toward the downstream side of the flow of the gas to be processed.
  • the gas to be processed that passes through the particle trapping portion (74) passes through the gas flow path (77) formed by the first electrode (75) and the second electrode (76).
  • the sectional area of the gas flow path (77) is narrower toward the downstream side of the flow of the gas to be processed. Therefore, the flow velocity of the gas to be processed that passes through the gas flow path (77) gradually increases as it proceeds downstream.
  • the operation for increasing the flow velocity of the gas to be processed in the aggregation section (70) as compared with that during the aggregation operation is performed as the scattering operation.
  • the flow rate of the gas to be processed that passes through the aggregation portion (70) has a larger value during the scattering operation than a value during the aggregation operation.
  • Processed gas that passes through the agglomeration part (70) Force The force received by the agglomerated particles (101) is proportional to the cube of the flow velocity of the gas to be processed. Therefore, in the agglomeration part (70) during the scattering operation, the force that the agglomerated particles (101) receive from the gas to be treated (that is, the force for peeling off the agglomerated particles (101)) is larger than that during the agglomeration operation. .
  • the particle trapping part (74) includes a first electrode (75) and a second electrode (76), and the first electrode (75) By forming an electric field between the second electrodes (76), the suspended particles (100) charged by the particle charging unit (71) are adhered to the first electrode (75) and aggregated.
  • an operation for increasing the flow velocity of the gas to be processed in the vicinity of the first electrode (75) as compared with that during the aggregation operation is performed as the scattering operation.
  • the particle trapping part (74) is provided with the first electrode (75) and the second electrode (76), and the first electrode (75) An electric field is formed in the space between the second electrodes (76).
  • the suspended particles (100) charged by the particle charging unit (71) are attracted by the electric attractive force and adhere to the first electrode (75).
  • the adhering suspended particles (100) aggregate together to form aggregated particles (101).
  • the flow velocity of the gas to be treated in the vicinity of the first electrode (75) of the particle trapping portion (74) is a value during the scattering operation as compared with a value during the agglomeration operation. Will be bigger.
  • the force that the aggregated particles (101) on the first electrode (75) receive from the gas to be processed is proportional to the cube of the flow velocity of the gas to be processed. Therefore, in the particle trapping part (74) during the scattering operation, the force that the agglomerated particles (101) receive also the gas force to be treated (that is, the force that tries to peel off the agglomerated particles (101)) is greater than that during the agglomeration operation. growing.
  • a tenth invention is the method according to the ninth invention, wherein the flow of the gas to be processed is partially blocked so that the gas to be processed flows intensively in the vicinity of the first electrode (75).
  • a shielding mechanism (80) is provided, and during the scattering operation, the shielding mechanism (80) partially blocks the flow of the gas to be processed, whereby the flow velocity of the gas to be processed in the vicinity of the first electrode (75).
  • the shielding mechanism (80) is provided in the dust collector.
  • This shielding mechanism (80) partially blocks the flow of the gas to be processed and concentrates the gas to be processed in the vicinity of the first electrode (75). Shed.
  • the operation of the shielding mechanism (80) is performed as a scattering operation.
  • the flow velocity of the gas to be processed passing through the particle trapping part (74) is the first flow rate. It rises locally near the electrode (75). Therefore, the force that the agglomerated particles (101) attached to the first electrode (75) are subjected to the gas force to be processed increases, and the agglomerated particles (101) are easily peeled off from the first electrode (75).
  • the vibration mechanism (90) for vibrating the aggregation portion (70) is provided, and the aggregation portion (70) is provided by the vibration mechanism (90).
  • the operation of causing the aggregated part (70) force to scatter and scatter the aggregated particles (101) is performed as the above-described scattering operation.
  • the vibration exciting mechanism (90) is provided in the dust collector. During the scattering operation of the dust collector, the vibration exciter vibrates the agglomerated part (70) and re-scatters the agglomerated particles (101) with the force of the agglomerated part (70).
  • the particle trapping part (74) includes a first electrode (75) and a second electrode (76), and the first electrode (75) By forming an electric field between the second electrodes (76), the suspended particles (100) charged by the particle charging portion (71) are adhered to the first electrode (75) and aggregated.
  • the operation of temporarily inverting the polarity of the first electrode (75) and the polarity of the second electrode (76) is performed as the scattering operation.
  • the particle trapping part (74) includes a first electrode (75) and a second electrode (76), and the first electrode (75) By forming an electric field between the second electrodes (76), the suspended particles (100) charged by the particle charging portion (71) are adhered to the first electrode (75) and aggregated.
  • the operation of generating a spark between the first electrode (75) and the second electrode (76) is performed as the scattering operation.
  • the particle capturing section (74) is provided with the first electrode (75) and the second electrode (76), and the first electrode An electric field is formed in the space between (75) and the second electrode (76).
  • the suspended particles (100) charged by the particle charging unit (71) are attracted by the electric attractive force and adhere to the first electrode (75).
  • the attached suspended particles (100) Aggregate each other to form aggregated particles (101).
  • the polarities of the first electrode (75) and the second electrode (76) are opposite to those during the aggregation operation.
  • the first electrode (75) is on the negative electrode side and the second electrode (76) is on the positive electrode side during the aggregation operation.
  • the first electrode (75) is on the positive electrode side and the second electrode (76) is on the negative electrode side.
  • the aggregated particles (101) on the first electrode (75) are positively charged (+). Then, when the first electrode (75) is switched to the positive electrode side during the scattering operation, the positively (+) charged aggregated particles (101) on the first electrode (75) become the first due to the electric repulsive force. It is peeled off from the electrode (75).
  • the thirteenth invention in the dust collector during the scattering operation, a spark is generated between the first electrode (75) and the second electrode (76).
  • a spark is generated between the first electrode (75) and the second electrode (76)
  • the agglomerated particles (101) are peeled off from the first electrode (75) by an electric shock, and the process gas is discharged. Re-splash.
  • the aggregated particles (101) are formed by aggregating a plurality of suspended particles (100) in the aggregation part (70), and the aggregated particles (101) formed in the aggregation part (70) are captured. Collected at Shubu (50).
  • fine suspended particles (100) having a particle size of about 1 ⁇ m are combined with a part of relatively large aggregated particles (101) having a force of a plurality of suspended particles (100). It is collected in the collection part (50).
  • the particle size is about 1 ⁇ m from the gas to be treated. Fine suspended particles (100) can be removed. Therefore, according to the present invention, fine suspended particles (100) can be removed from the gas to be processed, and the pressure loss of the gas to be processed is low, and a dust collector can be realized.
  • the agglomerated particles (101) formed in the aggregating portion (70) can be reliably re-scattered into the gas to be treated. For this reason, the agglomerated part (7 The accumulated amount of the aggregated particles (101) in 0) can be suppressed to a certain level or less, and the performance of the aggregated part (70) can be reliably maintained.
  • the particle charging unit (71) and the particle trapping unit (74) are provided in the aggregation unit (70), and the suspended particles (100) charged by the particle charging unit (71) are provided. ) Is trapped in the particle trapping part (74) by electrical attraction. For this reason, the particle trapping part (74) can reliably capture the fine suspended particles (100) while suppressing the pressure loss of the gas to be processed when passing through the particle trapping part (74). Therefore, according to the present invention, it is possible to improve the performance of the dust collector while keeping the pressure loss of the gas to be processed low.
  • the first electrode (75) force aggregated particles (101) is easy to peel off. Therefore, according to the present invention, the amount of aggregated particles (101) remaining on the first electrode (75) can be reduced, and the performance of the particle trapping part (74) can be reliably maintained.
  • the protrusion (78) is formed on the surface of the first electrode (75), and the aggregated particles (101) are formed in the vicinity of the protrusion (78). go.
  • the aggregated particles (101) can be formed with such a size that the first electrode (75) force is peeled off by the flow of the gas to be treated, and the suspended particles (100) are collected in the dust collector. It can improve efficiency.
  • the gas channel (77) through which the gas to be treated flows is formed in the particle trapping portion (74), and the cross-sectional area of the gas channel (77) is narrowed toward the downstream side.
  • the flow of the gas to be treated is gradually increased.
  • the agglomerated particles (101) formed by the particle trapping part (74) can be reliably peeled off by the first electrode (75) and collected by the trapping part (50).
  • the collection efficiency of suspended particles (100) can be improved.
  • the flow velocity of the gas to be processed that passes through the agglomeration part (70) during the scattering operation is increased, and the force that the aggregated particles (101) receive also the gas force to be processed is increased.
  • the flow rate of the air to be treated in the vicinity of the first electrode (75) of the particle trapping part (74) is increased during the scattering operation, and the aggregated particles (101) on the first electrode (75) are increased. Is increasing the force received by the gas force to be treated. Therefore, in these eighth and ninth inventions, the aggregated part (70) is changed into the aggregated particles (1
  • the flow velocity of the gas to be processed in the vicinity of the first electrode (75) is increased by partially blocking the flow of the gas to be processed by the shielding mechanism (80). For this reason, the flow rate of the gas to be processed in the vicinity of the first electrode (75) can be increased without changing the flow rate of the gas to be processed that passes through the condensing part (70). (75) Re-scattering of powerful aggregated particles (101) can be promoted. Therefore, according to the present invention, while avoiding problems such as noise caused by an increase in the flow rate of the gas to be processed, the amount of aggregated particles (101) staying in the agglomerated portion (70) is reduced, thereby collecting the particles. The performance of the dust device can be kept high
  • the aggregated part (70) is also re-scattered by the force of the aggregated part (70) by vibrating the aggregated part (70) by the vibration mechanism (90). Therefore, according to the present invention, the amount of the agglomerated particles (101) staying in the agglomeration part (70) can be reduced, and the performance of the dust collector can be kept high.
  • the operation of switching the polarities of the first electrode (75) and the second electrode (76) in the opposite direction to that during the aggregation operation is performed as a scattering operation.
  • the operation of generating a spark between the first electrode (75) and the second electrode (76) is performed as a scattering operation. Therefore, according to these twelfth and thirteenth inventions, the first electrode (75) force can also surely rescatter the agglomerated particles (101), and the agglomerated particles (101) staying in the agglomerated part (70). The amount of dust can be reduced and the performance of the dust collector can be kept high.
  • FIG. 1 is a schematic side view showing an internal structure of an air cleaner according to a first embodiment.
  • FIG. 2 is a schematic front view of the pre-filter cue or the collection unit in a state where it is installed in the air cleaner of the first embodiment.
  • FIG. 3 is an enlarged cross-sectional view showing a main part of the purification unit in the first embodiment.
  • FIG. 4 is a schematic side view showing the aggregation unit of the first embodiment.
  • FIG. 5 is an enlarged view of a main part schematically showing the operation of the aggregating unit.
  • FIG. 6 is an enlarged view of the main part of the particle trapping part in Modification 1 of Embodiment 1.
  • FIG. 7 is a schematic side view showing the aggregation unit of Modification 2 of Embodiment 1.
  • Fig. 8 is a schematic side view showing the aggregation unit of Embodiment 2, wherein (A) shows the first state of the shielding unit, and (B) shows the second state of the shielding unit. Show.
  • FIG. 9 is a schematic side view showing an aggregation unit of Modification 1 of Embodiment 2.
  • FIG. 10 is a schematic perspective view showing a main part of an air cleaner according to Modification 3 of Embodiment 2.
  • FIG. 11 is an enlarged side view showing the main part of the particle trapping part in Modification 4 of Embodiment 2.
  • FIG. 12 is a schematic side view showing the internal structure of the air cleaner according to the third embodiment.
  • FIG. 13 is a schematic side view showing the internal structure of the air cleaner according to the fourth embodiment.
  • FIG. 14 is a schematic front view of a prefilter unit or a collection unit in a state where it is installed in an air cleaner according to a fifth embodiment.
  • FIG. 15 is a schematic front view of a prefilter unit or a collection unit in a state where it is installed in an air cleaner according to a modification of the fifth embodiment.
  • FIG. 16 is a schematic perspective view of a particle trapping portion in a first modification of another embodiment.
  • FIG. 17 is an enlarged cross-sectional view showing a main part of a purification unit in a second modification of the other embodiment.
  • FIG. 18 is an enlarged cross-sectional view showing a main part of a purification unit in a second modification of the other embodiment.
  • FIG. 19 is an enlarged side view showing a main part of a purification unit in a third modification of the other embodiment.
  • FIG. 20 is a schematic side view showing the internal structure of an air cleaner according to a fourth modification of the other embodiment.
  • FIG. 21 is a schematic side view showing a main part of an air cleaner in a fifth modification of the other embodiment.
  • FIG. 22 is a schematic configuration diagram showing a main part of an air cleaner according to a sixth modified example of the other embodiment.
  • FIG. 23 shows a main part of an air cleaner according to a sixth modification of the other embodiment. It is a schematic block diagram.
  • FIG. 24 is a schematic side view showing the internal structure of the indoor unit in the seventh modification example of the other embodiment.
  • Embodiment 1 of the present invention will be described.
  • the air cleaner (10) of the present embodiment constitutes a dust collector according to the present invention.
  • the air cleaner (10) of the first embodiment includes a box-shaped casing (20).
  • a suction port (21) is formed on the front surface, and an air outlet (22) is formed on the upper surface near the back surface.
  • the air passage (23) constitutes a gas passage for circulating the air to be treated as the gas to be treated.
  • a collecting unit (50) as a collecting unit, and a fan (25) are installed in order from the suction port (21) to the blowout port (22).
  • the prefilter unit (30) includes a prefilter (31), a pair of rollers (32, 33) for winding the prefilter (31), and a first filter for purifying the prefilter (31). And a purification unit (40).
  • the prefilter (31) is a filter for collecting relatively large suspended matters (dust) such as “dust” contained in the air to be treated.
  • the prefilter (31) is formed into a thin and flexible endless sheet, and is provided so as to cross the air passage (23).
  • the coarseness of the prefilter (31) is, for example, about the same as that of a filter installed in an indoor unit of a general air conditioner. Details of the pre-filter unit (30) will be described later.
  • the agglomeration unit (70) is a suspended particle remaining in the air to be treated that has passed through the prefilter (31)
  • the collection unit (50) includes a dust collection filter (51), a pair of rollers (52, 53) for winding the dust collection filter (51), and a dust collection filter (51). And a second purification unit (60).
  • the dust collection filter (51) is a filter for collecting the aggregated particles (101) contained in the air to be treated that has passed through the aggregation unit (70).
  • the dust collection filter (51) is formed in a thin and flexible endless sheet shape, and is provided so as to cross the air passage (23).
  • the coarseness of the dust collection filter (51) is, for example, the same level as that of a filter installed in a general air conditioner indoor unit, or slightly weaker than that. Details of the collection unit (50) will be described later.
  • the fan (25) is arranged directly under the outlet (22)! This fan (25) is a loose centrifugal fan (25), which is configured to suck in air from the front and blow out the trapped air upward.
  • the pre-filter unit (30) and the collection unit (50) are a force dust collector equipped with a pre-filter (31). Forces that differ in terms of whether or not a filter (51) is provided.
  • each of the pre-filter unit (30) and the collection unit (50) includes a filter (31, 51), a pair of rollers (32, 33, 52, 53), and a purification mechanism. And a purification unit (40, 60).
  • one of the pair of rollers (32, 33, 52, 53) is an air passage (23 ) On the upper end side and the other on the lower end side of the air passage (23).
  • the first roller (32, 52) on the upper end side of the air passage (23) is installed almost directly above the second roller (33, 53) on the lower end side of the air passage (23).
  • Each roller (32, 33, 52, 53) is formed in a round bar shape extending in the width direction of the casing (20) (left-right direction in FIG. 2).
  • the filter (31,51) formed in an endless loop is stretched over the first roller (32,52) and the second roller (33,53)! /
  • the second roller (33, 53) is rotated at one end of the second roller (33, 53).
  • the motors (34, 54) are connected.
  • the filter (31, 51) circulates between the first roller (32, 52) and the second roller (33, 53).
  • the first roller (32, 52), the second roller (33, 53), and the motor (34, 54) are a drive mechanism that moves the endless filter (31, 51) in one direction ( 36/56)!
  • the first purification unit (40) is arranged immediately below the second roller (33).
  • the second purification unit (60) is arranged directly under the second outlet (53).
  • the first purification unit (40) of the pre-filter unit (30) and the second purification unit (60) of the collection unit (50) are either the pre-filter (31) or the dust collection filter ( 51) Forces that differ in that respect Other aspects are similarly constructed.
  • the first purification unit (40) and the second purification unit (60) are each composed of a scraping brush (41, 61) and a storage case (42, 62).
  • the storage case (42, 62) is formed in an elongated hollow box shape.
  • the storage case (42, 62) is disposed below the second roller (33, 53) in a posture along the second roller (33, 53).
  • the scraping brush (41, 61) is accommodated in the storage case (42, 62).
  • This scraping brush (41,61) has a filter (3 1, 51) is placed upward so as to come into contact with the outer surface of the portion wound around the second roller (33, 53), and is used for removing dust from the filter (31, 51). Constructs a scraping member. Dust and the like that have been scraped off from the filter (31, 51) by the scraping brush (41, 61) accumulate in the storage case (42, 62).
  • each storage case (42, 62) is provided with an openable / closable nozzle connection (43, 63).
  • the nozzle connecting portion (43, 63) is disposed near one end (closest to the left end in FIG. 2) of the housing case (42, 62). Further, the nozzle connecting portion (43, 63) is configured to be able to connect to the suction nozzle (68) of the vacuum cleaner and to open and close in conjunction with the attachment / detachment of the suction nozzle (68).
  • the nozzle connection part (43, 63) is opened and the internal space of the housing case (42, 62) becomes the suction nozzle ( 68), while the suction nozzle (68) is pulled out from the nozzle connection (43, 63), the suction bow I nozzle (68) is closed and the storage case (42, 62 ) Internal space is blocked by external force.
  • the aggregation unit (70) includes a particle charging section (71) and a particle trapping section (74), and constitutes an aggregation section.
  • the particle charging unit (71) is for charging the floating particles (100) remaining in the air to be processed that has passed through the prefilter (31).
  • the particle charging unit (71) is provided with a plurality of ionization lines (72) and a plurality of counter electrodes (73).
  • the counter electrodes (73) are each formed in an elongated flat plate shape extending in the vertical direction on the paper surface of FIG. 1, and are arranged at equal intervals in the vertical direction so as to face each other.
  • One ion underline is arranged between the counter electrodes (73) arranged one above the other.
  • a DC voltage is applied between the ionization line (72) and the counter electrode (73), and the air is suspended in the air to be treated that passes between the ionization line (72) and the counter electrode.
  • Particle (100) is positively (+) charged.
  • the particle trapping section (74) is for temporarily trapping and aggregating the floating particles (100) charged by the particle charging section (71).
  • the particle trapping part (74) includes a dust collecting electrode (75) as a first electrode and a counter electrode (76) as a second electrode.
  • the dust collection electrode (75) and the counter electrode (76) are both elongated in the direction perpendicular to the paper surface of FIG. It is formed in a flat plate shape.
  • the dust collection electrode (75) and the counter electrode (76) are approximately the same size.
  • the dust collecting electrodes (75) and the counter electrodes (76) are alternately arranged in the vertical direction.
  • the dust collection electrode (75) and the counter electrode (76) are arranged at equal intervals in a posture in which they face each other.
  • the space between the dust collection electrode (75) and the counter electrode (76) is an air flow path (77) for flowing the air to be treated.
  • the air flow path (77) constitutes a gas flow path.
  • the material of the dust collection electrode (75) and the counter electrode (76) is a slightly conductive resin with a V deviation. Dust collecting electrode
  • the material for (75) and the counter electrode (76) it is desirable to use a fine conductive resin having a volume resistivity of 10 8 ⁇ 'cm or more and less than ⁇ ⁇ ⁇ 'cm.
  • a DC voltage is applied between the dust collection electrode (75) and the counter electrode (76). Specifically, each dust collecting electrode (75) is connected to the negative electrode (one pole) of the power source (79), and each counter electrode (76) is connected to the positive electrode (+ pole) of the power source (79).
  • the suspended particles (100) charged positively (+) by the particle charging unit (71) are attracted to the dust collecting electrode (75) connected to the negative electrode (one pole) of the power source (79) and are brought to the surface. It adheres and aggregates with other suspended particles (100) to form aggregated particles (101).
  • the surface of the dust collection electrode (75) is subjected to a surface treatment for promoting the separation of the aggregated particles (101).
  • the surface treatment include forming a film with a fluorine resin or a water repellent, or performing a mirror finish to extremely reduce the surface roughness.
  • the surface treatment may include forming a coating film with an antifouling paint.
  • An example of this antifouling paint is: “A hydrophilic material, a hydrophobic polymer for paint, an organic solvent for the hydrophobic polymer for paint, and another organic solvent, and the other organic solvent is used for the hydrophobic polymer for paint.
  • the air to be treated When the fan (25) is operated, the air to be treated is taken into the air passage (23) through the suction port (21) (see FIG. 1).
  • the air to be treated that has flowed into the air passage (23) first passes through the prefilter (31) of the prefilter unit (30). Relatively large dust such as cotton dust contained in the air to be treated is collected by the prefilter (31) and removed from the air to be treated.
  • the to-be-processed air that has passed through the prefilter (31) continues to flow into the aggregation unit (70).
  • the air to be treated that has flowed into the aggregation unit (70) first passes through the particle charging section (71) (see Fig. 3).
  • the suspended particles (100) remaining in the air to be treated are positively (+) charged.
  • the suspended particles (100) charged by the particle charging unit (71) include extremely fine particles having a particle diameter of 1 ⁇ m or less, such as those contained in tobacco smoke.
  • the air flow path (77) which is a space between the dust collecting electrode (75) and the counter electrode (76).
  • a DC voltage is applied between the dust collection electrode (75) and the counter electrode (76)
  • an electric field is formed in the air flow path (77).
  • the positive (+) charged particles (100) in the air to be treated are attracted to the dust collecting electrode (75) and adhere to the surface.
  • the adhering suspended particles (100) aggregate together to form aggregated particles (101) having a large particle size.
  • the dust collection electrode (75) force is also peeled off and scattered. This point will be described with reference to FIG.
  • the suspended particles (100) charged positively (+) by the particle charging portion (71) on the surface of the dust collection electrode (75) are electrically attracted (ie, Coulomb force). It is attracted and attached.
  • the surface force of the flat dust collection electrode (75) becomes suspended and adhered.
  • the electric field is slightly concentrated near the suspended particles (100). For this reason, the floating particles (100) flying afterwards have a higher probability of adhering to the floating particles (100) that first adhere to the dust collecting electrode (75).
  • the air to be treated that has passed through the aggregation unit (70) passes through the dust collection filter (51) of the collection unit (50) in a state including the aggregation particles (101).
  • the dust collecting filter (51) captures the aggregated particles (101) in the air to be treated.
  • the air to be treated from which the aggregated particles (101) have been removed by the dust collecting filter (51) is sucked into the fan (25) and then blown out of the air outlet (22) force casing (20).
  • the pre-filter unit (30) performs the cleaning operation of the pre-filter (31), and the collection unit (50) performs the cleaning operation of the dust-collecting filter (51). These cleaning operations are performed, for example, every time the operating time of the air cleaner (10) reaches a predetermined reference value.
  • the cleaning operation of the prefilter unit (30) and the cleaning operation of the collection unit (50) need not be performed at the same timing, and may be performed individually at different timings. For example, when the cleaning operation is performed according to the operation time of the air purifier (10), the cleaning operation of the prefilter unit (30) and the cleaning operation of the collection unit (50) are performed respectively.
  • the reference value for the operation time may be set individually.
  • the second roller (33) is driven by the motor (34), and the prefilter (31) moves.
  • the moving pre-filter (31) has its outer surface rubbed against the scraping brush (41) of the first cleaning unit (40).
  • the relatively large dust collected by the prefilter (31) is swept away by the prefilter (31) by the scraping brush (41) and collected in the housing case (42).
  • the second roller (53) is driven by the motor (54), and the dust collection filter (51) moves.
  • the moving dust collection filter (51) is rubbed with the scrub brush (61) of the second cleaning unit (60) on its outer surface.
  • the agglomerated particles (101) collected by the dust collection filter (51) are scraped off from the dust collection filter (51) by the scraping brush (61) and collected in the storage case (62). Go.
  • the aggregated particles (101) are formed by aggregating a plurality of suspended particles (100) in the aggregation unit (70), and the aggregates formed by the aggregation unit (70) are formed.
  • the particles (101) are collected and collected by the dust collection filter (51) of the collection unit (50).
  • fine suspended particles (100) having a particle size of 1 ⁇ m or less are aggregated particles (101) having a relatively large particle size consisting of a plurality of suspended particles (100). ) And collected by the dust collection filter (51).
  • this air cleaner (10) fine suspended particles with a particle size of 1 ⁇ m or less from the air to be treated using a coarser dust collection filter (51) than a high-performance filter such as HEPA, for example. (100) can be removed. Therefore, according to this embodiment, it is possible to realize an air cleaner (10) that can remove fine suspended particles (100) from the air to be treated and that has a low pressure loss of the air to be treated. As a result, power consumption in the fan (25) can be reduced, and noise such as blowing noise can be reduced.
  • the aggregation unit (70) is provided with the particle charging unit (71) and the particle capturing unit (74), and the floating unit charged by the particle charging unit (71) is provided.
  • the particles (100) are trapped on the dust collection electrode (75) of the particle trapping part (74) by electrical attraction. Therefore, the particle trapping part (74) can reliably capture the fine suspended particles (100) while suppressing the pressure loss of the air to be treated when passing through the particle trapping part (74). Therefore, according to the present embodiment, it is possible to improve the performance of the air cleaner (10) while keeping the pressure loss of the air to be treated low.
  • the surface of the dust collection electrode (75) is subjected to a surface treatment for promoting the separation of the aggregated particles (101). Aggregated particles (101) are easily peeled off from (75). Therefore, according to the present embodiment, the amount of the aggregated particles (101) remaining on the dust collection electrode (75) can be reduced, and the performance of the particle trapping part (74) can be reliably maintained. .
  • the dust collecting filter (51) force is also removed by the first purification unit (60) to remove the agglomerated particles (101).
  • the aggregation unit (70) is The trapped suspended particles (100) are aggregated and then dispersed again into the air to be treated as aggregated particles (101). For this reason, suspended particles (100) and aggregated particles (101) do not continue to accumulate on the dust collection electrode (75) of the aggregation unit (70).
  • the agglomerated particles (101) scattered from the agglomeration unit (70) are collected by the dust collecting filter (51).
  • the agglomerated particles (101) are collected by the second filter unit (60).
  • the aggregated particles (101) do not continue to accumulate in the dust collection filter (51). Therefore, according to the present embodiment, it is not necessary to clean the aggregation unit (70) and the dust collection filter (51) by a single user, and the labor required for the maintenance work of the air cleaner (10) can be reduced.
  • the storage case can be obtained simply by connecting the suction nozzle (68) of the vacuum cleaner to the nozzle connection part (43, 63) of the storage case (42, 62). Aggregated particles (101) can be discharged from (42,62). Therefore, according to the present embodiment, it becomes easy to discard dust and agglomerated particles (101) collected in the storage case (42, 62), and the labor required for the maintenance work of the air cleaner (10) can be reduced. .
  • the aggregation unit (70) of the present embodiment includes the particle charging unit (71) and the particle capturing unit.
  • the particle trapping part (74) of this embodiment the suspended particles (100) aggregate on the surface of the dust collecting electrode (75) to form aggregated particles (101), and the aggregated particles have a certain size.
  • Dust collecting electrode (75) The force is peeled off and scattered.
  • the size of the dust collecting electrode (75) used in the particle trapping portion (74) of the present embodiment is significantly smaller than that used in a general electric dust collector. Therefore, according to this embodiment, the size of the air cleaner (10) can be made smaller than that of an electric dust collector having equivalent performance.
  • a large number of fine protrusions (78) may be formed on the surface of the dust collecting electrode (75)!
  • the protrusion (78) may be an elongated bowl-like shape extending in the longitudinal direction of the dust collecting electrode (75) (perpendicular to the paper surface of FIG. 6), or a columnar or rectangular parallelepiped shape.
  • a projection (78) is formed on the surface of the dust collection electrode (75)
  • an electric field is concentrated in the vicinity of the projection (78), and suspended particles (100) are concentrated on the projection (78). Adhere to.
  • the aggregated particles are large enough to be removed from the dust collection electrode (75) by the flow of air to be treated ( 101) can be reliably formed in a short time, and the collection efficiency of suspended particles (100) in the dust collector can be improved.
  • the distance between the dust collection electrode (75) and the counter electrode (76) is gradually narrowed toward the downstream side of the processing air, and the air flow path ( 77) Let's make the cross-sectional area smaller.
  • the cross-sectional shape of the dust collection electrode (75) is changed from a rectangular shape to a trapezoidal shape.
  • the cross-sectional shape of the dust collection electrode (75) is an isosceles trapezoid in which the upper base is positioned upstream of the air to be treated and the lower base is positioned downstream thereof.
  • the distance between the dust collection electrode (75) and the counter electrode (76) is d at the upstream end of the air to be treated, but is reduced to d '(d' d d) at the downstream end of the air to be treated.
  • the cross-sectional area of the air flow path (77) formed between the dust collection electrode (75) and the counter electrode (76) gradually decreases from the upstream side to the downstream side of the air to be treated. .
  • the agglomerated particles (101) formed by the particle trapping part (74) can be reliably peeled off from the agglomerated electrode cover and collected by the dust collecting filter (51), The collection efficiency of suspended particles (100) in the cleaner (10) can be improved.
  • the cross-sectional area of the air flow path (77) is changed by changing the shape of the dust collecting electrode (75).
  • the means for changing the value is not limited to this.
  • changing the shape of the counter electrode (76) By changing the shape of both (75) and the counter electrode (76), or by changing their arrangement without changing the shape of the dust collection electrode (75) or counter electrode (76), the air flow path ( 77) The cross-sectional area may be changed.
  • Embodiment 2 of the present invention will be described.
  • the air cleaner (10) of this embodiment is obtained by adding a shielding unit (80), which is a shielding mechanism, to Embodiment 1 described above.
  • the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.
  • the shielding unit (80) is provided in the aggregation unit (70).
  • the shielding unit (80) includes a shielding sheet (81) and a pair of rollers (84, 85) for winding up the shielding sheet (81).
  • Each of the pair of rollers (84, 85) is formed in an elongated round bar shape extending in a direction perpendicular to the paper surface of FIG.
  • One of the pair of rollers (84, 85) is arranged at the upper part on the front side of the particle trapping part (74) and the other is arranged at the lower part on the front side of the particle trapping part (74)! .
  • a motor for rotating the rollers (84, 85) is attached to each roller (84, 85).
  • the shielding sheet (81) is formed in a flexible sheet shape.
  • the shielding sheet (81) includes a mesh-like ventilation portion (82) that allows passage of air and a shielding portion (83) that blocks passage of air.
  • the shielding sheet (81) is provided with a portion where only the ventilation portion (82) is formed and a portion where the ventilation portion (82) and the shielding portion (83) are alternately formed.
  • the vertical width of the ventilation portion (82) is slightly larger than the thickness of the dust collection electrode (75).
  • the distance between the ventilation portions (82) is set to be approximately the same as the distance between the dust collection electrodes (75).
  • the shielding sheet (81) has its upper end fixed to the first roller (84) and its lower end fixed to the second roller (85).
  • the shielding sheet (81) is stretched from the first roller (84) to the second roller (85), and the dust collecting electrode (75) and the counter electrode (76) constituting the particle trapping part (74). ) To cover the front side.
  • the ventilation portion (82) of the shielding sheet (81) is formed by rotating the rollers (84, 85) to move the shielding sheet (81). Trapped part is particle trap
  • the first state (the state shown in FIG. 8 (A)) covering the front of the part (74) and the part of the shielding sheet (81) where the ventilation part (82) and the shielding part (83) are alternately formed It switches to the second state (the state shown in Fig. 8 (B)) covering the front surface of the particle trapping part (74).
  • the air cleaner (10) of the present embodiment alternately performs the aggregation operation and the scattering operation.
  • This air cleaner (10) normally performs an aggregating operation, and temporarily performs a scattering operation, for example, every time the duration of the aggregating operation reaches a predetermined value.
  • the aggregating operation is an operation for forming the agglomerated particles (101) by the particle trapping part (74) of the aggregating unit (70).
  • the shielding unit (80) is set to the first state (the state shown in FIG. 8 (A)), and the portion of the shielding sheet (81) where only the ventilation portion (82) is formed is used.
  • the front surface of the particle trap (74) is covered.
  • the air to be treated that has passed through the particle charging unit (71) flows into the front surface of the particle trapping unit (74) on the average. Therefore, the flow velocity of the air to be treated in the air channel (77) of the particle trapping part (74) is substantially constant in the cross section of the air channel (77).
  • the particle trapping part (74) charged floating particles (100) in the air to be treated are attracted and attached to the dust collecting electrode (75), and the aggregated particles (101) are formed on the surface of the dust collecting electrode (75). Growing up.
  • the scattering operation is an operation for separating the agglomerated particles (101) again into the air to be treated by peeling off the force of the dust collecting electrode (75).
  • the shielding unit (80) is set to the second state (the state shown in FIG. 8 (B)), and the ventilation portion (82) and the shielding portion (83) of the shielding sheet (81) are alternately arranged.
  • the front surface of the particle trapping portion (74) is covered by the portion formed on the surface.
  • the position of the shielding sheet (81) is set so that the ventilation part (82) faces the front end face of the dust collection electrode (75).
  • the shielding unit (80) constitutes a speed increasing means for increasing the flow velocity of the air to be processed in the vicinity of the dust collecting electrode (75) as compared with that during the coagulation operation.
  • the flow of the air to be treated flowing into the particle trapping part (74) of the aggregation unit (70) is partially blocked by the shielding sheet (81), so that the dust collection electrode (
  • the flow velocity of air to be treated near the surface of 75) is increased. For this reason, the flow rate of the air to be treated in the vicinity of the dust collecting electrode (75) can be increased without changing the flow rate of the air to be treated passing through the aggregation unit (70). 75) The re-scattering of the aggregated particles (101) from 75) can be promoted. Therefore, according to the present embodiment, while avoiding problems such as noise caused by an increase in the flow rate of the air to be treated, the aggregated particles staying in the dust collection electrode (75) of the aggregation unit (70) ( By reducing the amount of 101), the performance of the air cleaner (10) can be kept high.
  • the dust collecting electrode (75) and the counter electrode (76) of the particle trapping part (74) are made movable so that the air passage (23) of the particle trapping part (74) is movable. Let's change the flow rate of the air to be treated.
  • the particle trapping portion (74) of the present modification includes each dust collecting electrode (75) and each counter electrode.
  • the dust collection electrode (75) and the counter electrode (76) are configured to be rotatable about their front end portions as axes. Specifically, the dust collection electrode (75) and the counter electrode (76) are inclined by a force that is generally horizontal (the posture shown by the two-dot chain line in FIG. 9) and downstream of the flow of the air to be treated. Rotate between postures (posture shown by solid line in the figure).
  • the dust collection electrode (75) and the counter electrode (76) are in a substantially horizontal posture (the posture indicated by the two-dot chain line in Fig. 9). Set to In this state, the distance between the dust collecting electrode (75) and the counter electrode (76) is “d”. Meanwhile, particles during scattering In the child trapping part (74), the dust collecting electrode (75) and the counter electrode (76) are set in an inclined posture (the posture shown by a solid line in the figure). In this state, the distance between the dust collection electrode (75) and the counter electrode (76) is “d”, which is shorter than “d”.
  • the cross-sectional area of the air flow path (77) formed between the dust collection electrode (75) and the counter electrode (76) is smaller during the scattering operation than during the aggregating operation. For this reason, during the scattering operation, the flow speed of the air to be treated in the air flow path (77) increases compared to that during the agglomeration operation, and the agglomerated particles (101) are easily peeled off from the dust collecting electrode (75). .
  • the aggregation operation and the scattering operation may be switched by changing the flow rate of the air to be treated.
  • the flow rate of the air to be processed in the air passage (23) increases compared to that during the agglomeration operation.
  • the flow rate of the air to be treated is adjusted by adjusting the rotational speed of the fan (25).
  • the flow velocity of the air to be treated in the air flow path (77) of the particle agglomeration portion increases accordingly. For this reason, the force that the dust collecting electrode (75) -like aggregated particles (101) are subjected to the processing air force increases, and the aggregated particles (101) are easily peeled off from the dust collecting electrode (75).
  • the operation of vibrating the aggregation unit (70) may be performed as a scattering operation.
  • the air cleaner (10) of the present modification is provided with a vibration unit (90) as a vibration mechanism.
  • the vibration unit (90) includes a vibration motor (91) and a vibration disk (92).
  • the vibration disk (92) is attached in an eccentric state with respect to the output shaft of the vibration motor (91).
  • the vibration unit (90) is installed at a position where the outer peripheral surface of the vibration disk (92) contacts the aggregation unit (70).
  • energization of the vibration motor (91) is performed during the scattering operation, and power distribution to the vibration motor (91) is stopped during the aggregation operation.
  • the excitation motor (91) is energized, the excitation disk (92) attached to the output shaft rotates and the aggregation unit (70) is shaken in the vertical direction.
  • the dust collecting electrode (75) of the particle trapping part (74) also vibrates, and the aggregated particles (101) are not easily separated from the dust collecting electrode (75).
  • the operation of switching the connection state between the dust collecting electrode (75) and the counter electrode (76) and the power source (79) in the aggregation unit (70) is performed as a scattering operation. May be.
  • the dust collecting electrode (75) is connected to the positive electrode (+ electrode) of the power source (79), and the counter electrode (76) is connected to the negative electrode (one pole) of the power supply (79).
  • the aggregated particles (101) on the dust collection electrode (75) are positively (+) charged.
  • the dust collecting electrode (75) is connected to the positive electrode (+ electrode) of the power source (79)
  • the positively (+) charged aggregated particles (101) on the surface are collected by the electric repulsive force. It is pulled away from the dust electrode (75) and scattered into the air to be treated.
  • the operation of switching the connection state between the dust collecting electrode (75) and the counter electrode (76) and the power source (79) may be performed using a mechanical or electrical switch.
  • the AC voltage may be temporarily applied to the dust collection electrode (75) and the counter electrode (76).
  • Modification 5 of Embodiment 2 In the air cleaner (10) of the present embodiment, the operation of generating a spark between the dust collection electrode (75) and the counter electrode (76) of the aggregation unit (70) may be performed as a scattering operation.
  • a spark is forcibly generated between the dust collection electrode (75) and the counter electrode (76)
  • an electrical or physical impact force acts on the aggregated particles (101) on the dust collection electrode (75).
  • the agglomerated particles (101) are peeled off by the impact of the dust collecting electrode (75) and scattered into the air to be treated.
  • Embodiment 3 of the present invention will be described.
  • the air cleaner (10) of the present embodiment is obtained by changing the configurations of the prefilter unit (30) and the collection unit (50) in the first embodiment.
  • the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.
  • the prefilter (31) of the prefilter unit (30) and the dust collection filter (51) of the collection unit (50) In the endless shape as in the first embodiment, it is formed in a single sheet shape having an end portion.
  • one end of the filter (31, 51) is fixed to the first roller (32, 52), and the other end of the filter (31, 51). The end is fixed to the second roller (33, 53).
  • both the first roller (32, 52) and the second roller (33, 53) are driven by motors not shown. .
  • the filter (31, 51) moves upward.
  • the filter (31, 51) is wound around the second roller (33, 53) by rotating the second roller (33, 53) by rotating the second roller (33, 53), the filter (31, 51) moves downward.
  • Embodiment 4 of the present invention will be described.
  • the air cleaner (10) of the present embodiment is In the first embodiment, the configurations of the pre-filter unit (30) and the collection unit (50) are changed.
  • the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.
  • one filter sheet (58) serves as both the pre-filter (31) and the dust collection filter (51)! /
  • the filter sheet (58) is formed in a flexible endless loop shape.
  • the filter sheet (58) includes a first roller (32) and a second roller (33) of the prefilter unit (30), and a first roller (52) and a second roller (53) of the collecting unit (50). It ’s over!
  • the portion located upstream of the aggregation unit (70) (that is, the portion extending from the first roller (32) to the second roller (33) of the prefilter unit (30)) is pre-filtered ( 31) and the part located downstream of the aggregation unit (70) (that is, the part of the collection unit (50) that spans the first roller (52) force and the second roller (53)) is the dust collection filter ( 51).
  • the arrangement of (60) is different from that of the first embodiment.
  • the first purification unit (40) is disposed along the outer peripheral surface of the filter sheet (58) at a position below the aggregation unit (70).
  • the scraping brush (41) of the first purification unit (40) is in contact with the outer peripheral surface of the filter sheet (58).
  • the second purification unit (60) is disposed along the inner peripheral surface of the filter sheet (58) at a position above the aggregation unit (70).
  • the scraping brush (61) of the second purification unit (60) contacts the inner peripheral surface of the filter sheet (58).
  • Embodiment 5 of the present invention will be described.
  • the air cleaner (10) of the present embodiment is obtained by changing the configurations of the prefilter unit (30) and the collection unit (50) in the first embodiment.
  • the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.
  • a power generation mechanism (35,55) is provided instead of the motor (34,54). Yes.
  • the power generation mechanism (35, 55) is configured to generate rotational power by the suction force of the vacuum cleaner when the suction nozzle (68) of the vacuum cleaner is connected to the nozzle connection (43, 63). Has been.
  • the power generation mechanism (35, 55) is composed of a cylindrical impeller with one or more spiral blades, similar to the turbine brush of the suction tool of a commercial vacuum cleaner. Yes.
  • the impeller is made of a material with a low specific gravity such as synthetic resin so that it can be rotated by the suction force of the vacuum cleaner.
  • the power generating mechanism (35) of the prefilter unit (30) is connected to the second roller (33) of the prefilter unit (30) via a gear or the like.
  • the power generation mechanism (55) of the collection unit (50) is connected to the second roller (53) of the collection unit (50) via a gear or the like.
  • the filter is generated by the driving force generated by the power generation mechanism (35, 55) using the suction force of the vacuum cleaner. (31,51) It is moved. This eliminates the need for a power source such as a motor to move the dust collection filter (51), simplifies the configuration of the air cleaner (10), and reduces the power consumption of the air cleaner (10). .
  • a transport member (37, 57) is added to each of the first purification unit (40) and the second purification unit (60). Even so.
  • This conveying member (37, 57) is formed in the shape of an elongated round bar having a spiral ridge, and is disposed along the scraping brush (4 1, 61).
  • the conveying members (37, 57) are rotationally driven by the power obtained by the power generation mechanism (35, 55). When the conveying member (37, 57) rotates, dust and agglomerated particles (101) scraped off from the filter (31, 51) by the scraping brush (41, 61) are transferred to the conveying member (37, 57).
  • the conveying member (37, 57) of the present modified example uses the power generated by the power generation mechanism (35, 55) using the suction force of the vacuum cleaner to remove dust and aggregated particles (101). Conveying. Therefore, according to this modification, a power source such as a motor for driving the conveying members (37, 57) is not required, and the air cleaner (10) is complicated and the power consumption of the air cleaner (10) is reduced. Can be avoided.
  • the dust collecting electrode (75) and the counter electrode (76) of the particle trapping part (74) are both formed in a flat plate shape!
  • the shape of the electrode (75) and the counter electrode (76) is not limited to a flat plate shape.
  • the dust collecting electrodes (75) are formed in a lattice shape, and one rod-like counter electrode (76) is arranged in each compartment formed in the dust collecting electrode (75). Also good.
  • a dust collector with a counter electrode (76) is inserted.
  • Each section of the pole (75) constitutes an air flow path (77). The suspended particles (100) in the air to be treated flowing through the air channel (77) adhere to the surface of the dust collection electrode (75) surrounding the air channel (77).
  • the cleaning unit (40, 60) of each of the above embodiments has a scraping brush (41, 61) as a member for scraping dust and agglomerated particles (101) from the filter (31, 51).
  • the filter (31, 51) force is not limited to the scraping brush (41, 61) as a member for removing the agglomerated particles (101).
  • a round bar-shaped rotating brush (65) as shown in Fig. 17 is provided in the purification unit (40, 60), and the rotating brush (65) is rotated simultaneously with the movement of the filter (31, 51).
  • dust or agglomerated particles (101) may be removed from the filter (31, 51).
  • a scraping pad (66) as shown in FIG. 18 is provided, and the scraping pad (66) is brought into contact with the filter (31, 51), so that the filter (31, 51) force dust Or you can drop the agglomerated particles (101)! /.
  • the scraping brush (41, 61) is omitted, and only the suction force of the vacuum cleaner connected to the nozzle connection (43, 63) is used. Dust and aggregate particles (101) may be removed from the filter (31,51)! ,.
  • a suction part (67) is formed on the upper part of the housing case (42, 62).
  • the suction portion (67) is formed in a tapered nozzle shape, and the opening at the tip thereof is disposed in the vicinity of the filter (31, 51) along the second roller (33, 53). .
  • the suction nozzle (68) of the vacuum cleaner is connected to the nozzle connection part (43,63) of the storage case (42,62)
  • the housing case (42, 62) may be detachable.
  • the storage cases (42, 62) of this modification form a holding container.
  • the storage case (42, 62) can be attached and detached as it is detachable.
  • the nozzle connection (43, 63) is omitted from the case (42, 62).
  • the dust and the aggregated particles (101) that have been scraped off from the filter (31, 51) accumulate in the housing case (42, 62).
  • the user of the air cleaner (10) removes the storage case (42, 62), for example, every week or every month, and removes dust or agglomerated particles (101) accumulated in the storage case (42, 62). Discard.
  • the filter (31, 51) may be reciprocated up and down.
  • the drive mechanism (36, 56) is configured to reciprocate the filter (31, 51) linearly.
  • the drive mechanism (36, 56) of this modification has a rack provided at the side end of the filter (31, 51) and a pion that engages with this rack attached to the drive shaft. The filter (31, 51) is moved linearly by rotating the pinion.
  • the first purification unit (40) is at the lower end of the front side of the pre-filter (31), and the second purification unit (60) is at the front side of the dust collection filter (51). It is arranged at the lower end of the.
  • the scraping brush (41, 61) is installed so as to face the front surface of the filter (31, 51).
  • the aggregated particles (101) are collected using the dust collection filter (51).
  • the collection unit (50) It is not limited to using (51).
  • the collection unit (50) may be configured to separate the air to be treated and the aggregated particles (101) using a cyclone (95).
  • the air to be treated containing the agglomerated particles (101) swirls, and the agglomerated particles (101) are collected near the outer peripheral wall by centrifugal force.
  • the air to be treated from which the agglomerated particles (101) have been removed is discharged to the outside from the vicinity of the center of the cyclone (95).
  • the collection unit (50) may be configured to separate the aggregated particles (101) from the air to be treated using gravity.
  • the collection unit (50) is constituted by a duct (96) installed on the downstream side of the aggregation unit (70).
  • This duct ( 96) has a shape in which the cross-sectional area abruptly narrows at a position that has advanced a predetermined distance downstream from the collection unit (50). Specifically, the cross-sectional area of the duct (96) is narrowed by raising the bottom of the duct (96) stepwise.
  • the agglomerated particles (101) that have flowed out of the agglomeration unit (70) together with the air to be treated are gathered below the duct (96) due to the action of gravity while flowing through the wide section of the duct (96). .
  • the agglomerated particles (101) collected below the duct (96) hit the bottom surface of the stepped duct (96) and stay in the duct (96).
  • the aggregated particles (101) contained in the air to be treated are reduced.
  • the air to be treated flows into the duct (96) having a narrow cross-sectional area and is discharged to the outside.
  • Aggregated particles (101) accumulated in the duct (96) are taken out from the duct (96) by opening the open / close door (97) formed in the stepped portion.
  • the collection unit (50) may be configured to spray the water into the air to be treated and collect the aggregated particles (101) together with the water! /.
  • the air cleaner (10) is configured by the dust collector according to the present invention.
  • the dust collector according to the present invention may be incorporated in the air conditioner.
  • the dust collector according to the present invention is incorporated in the indoor unit (15) of the air conditioner.
  • This indoor unit (15) is configured in the same manner as the air cleaner (10) of each of the above embodiments, except that the indoor heat exchanger (26) is provided.
  • the indoor heat exchanger (26) is disposed between the collection unit (50) and the fan (25). That is, in this indoor unit (15), the indoor heat exchanger (26) is arranged downstream of the dust collector composed of the prefilter unit (30), the aggregating unit (70), and the collecting unit (50). ing.
  • the indoor heat exchange (26) heat is exchanged between the refrigerant circulated between the outdoor units (not shown) and the air to be treated.
  • the air cleaner (10) is constituted by the dust collector according to the present invention, and the suspended particles (100) are removed from the air! Is not limited to air.
  • air for example, combustion exhaust gas from boilers etc. is treated and You may make it collect the included fine dust etc. with a dust collector.
  • the present invention is useful for a dust collector for removing force floating particles (100) such as air and combustion exhaust gas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrostatic Separation (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Selon la présente invention, une unité de préfiltration (30), une unité de floculation (70) et une unité de collecte (50) sont montées dans un boîtier (20) d'un épurateur d'air (10). L'air à traiter, à partir duquel la poussière et les impuretés de grande taille sont retirées par le préfiltre (31), circule dans l'unité de floculation (70). Dans cette unité de floculation (70), de fines particules en suspension dans l'air à traiter sont capturées par une électrode de collecte de poussière. Les particules en suspension dans l'air floculent sur l'électrode de collecte de poussière afin de devenir des particules floculées. Ces particules floculées sont séparées de l'électrode de collecte de poussière lorsqu'elles atteignent une certaine taille, puis elles sont dispersées dans l'air à traiter. Dans l'unité de collecte de poussière (50) placée du côté aval de l'unité de floculation (70), les particules floculées dans l'air à traiter sont capturées par un filtre de collecte de poussière (51).
PCT/JP2007/063393 2006-07-14 2007-07-04 Collecteur de poussière WO2008007592A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-194757 2006-07-14
JP2006194757A JP4270233B2 (ja) 2006-07-14 2006-07-14 集塵装置

Publications (1)

Publication Number Publication Date
WO2008007592A1 true WO2008007592A1 (fr) 2008-01-17

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JP (1) JP4270233B2 (fr)
WO (1) WO2008007592A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051988A1 (fr) * 2008-11-04 2010-05-14 Brandenburgische Technische Universität Cottbus Procédé de dépôt électrique d'aérosols et dispositif en vue de l'exécution du procédé
WO2018147777A1 (fr) * 2017-02-08 2018-08-16 Envac Ab Filtration d'air
WO2019197660A1 (fr) * 2018-04-13 2019-10-17 Hengst Se Filtre à air
US20220055456A1 (en) * 2020-08-20 2022-02-24 Denso International America, Inc. Particulate control systems and methods for olfaction sensors

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KR101115605B1 (ko) 2009-12-14 2012-03-05 한국기계연구원 전기집진장치
JP5879470B2 (ja) * 2010-01-18 2016-03-08 パナソニックＩｐマネジメント株式会社 集塵装置
JP2018051414A (ja) * 2015-02-06 2018-04-05 パナソニックＩｐマネジメント株式会社 集塵装置
CN104819519B (zh) * 2015-05-19 2017-09-29 常熟市东神电子器件有限公司 一种复合型交叉静电电场空气净化装置
JP6168109B2 (ja) * 2015-06-30 2017-07-26 三菱電機株式会社 空気清浄装置
JP2019173998A (ja) * 2018-03-27 2019-10-10 東京瓦斯株式会社 厨房用レンジフード
KR102256745B1 (ko) * 2019-08-26 2021-05-25 재단법인 철원플라즈마 산업기술연구원 공기정화 장치 및 방법

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JPS6233565A (ja) * 1985-08-08 1987-02-13 Shinwa Tec Kk 静電式集塵装置
JPH01156721U (fr) * 1988-04-18 1989-10-27
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051988A1 (fr) * 2008-11-04 2010-05-14 Brandenburgische Technische Universität Cottbus Procédé de dépôt électrique d'aérosols et dispositif en vue de l'exécution du procédé
WO2018147777A1 (fr) * 2017-02-08 2018-08-16 Envac Ab Filtration d'air
CN110461732A (zh) * 2017-02-08 2019-11-15 恩华特公司 空气过滤
EP3580149A4 (fr) * 2017-02-08 2021-01-20 Envac AB Filtration d'air
CN110461732B (zh) * 2017-02-08 2022-04-22 恩华特公司 空气过滤组件
WO2019197660A1 (fr) * 2018-04-13 2019-10-17 Hengst Se Filtre à air
US20220055456A1 (en) * 2020-08-20 2022-02-24 Denso International America, Inc. Particulate control systems and methods for olfaction sensors
US11760169B2 (en) * 2020-08-20 2023-09-19 Denso International America, Inc. Particulate control systems and methods for olfaction sensors

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