WO2010055600A1 - 集塵装置 - Google Patents
集塵装置 Download PDFInfo
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- WO2010055600A1 WO2010055600A1 PCT/JP2009/004181 JP2009004181W WO2010055600A1 WO 2010055600 A1 WO2010055600 A1 WO 2010055600A1 JP 2009004181 W JP2009004181 W JP 2009004181W WO 2010055600 A1 WO2010055600 A1 WO 2010055600A1
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- electrode
- dust
- lattice
- dust collection
- hole
- Prior art date
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- 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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
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- 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
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- 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
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- 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
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- 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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
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- 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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
Definitions
- the present invention relates to a dust collector that forms an electric field between electrodes and collects dust in the air to be treated on the dust collection surface of the electrode, and particularly relates to measures for improving dust collection efficiency.
- Patent Document 1 discloses a dust collector using two grid-like electrodes.
- This dust collector includes a first electrode, a second electrode, and a power source for applying a voltage to both electrodes.
- the first electrode and the second electrode have substantially the same structure.
- these electrodes have a base part having a lattice structure and a protrusion part protruding from the base part in the axial direction of the lattice hole.
- the protrusion is formed on the side edge of each lattice hole. That is, in these electrodes, one protrusion is formed to correspond to the side edge of one lattice hole.
- both the electrodes face each other so that the protrusion of the first electrode is inserted into the lattice hole of the second electrode and the protrusion of the second electrode is inserted into the lattice hole of the first electrode. Has been placed.
- an electric field is formed between the first electrode and the second electrode, and a dust collection surface for collecting dust in the air to be treated is formed on the surface of the first electrode. .
- an electric field is formed between the inner peripheral surface of the lattice hole of the first electrode and the protrusion of the second electrode, so that a dust collection surface is formed on the inner peripheral surface of the lattice hole of the first electrode. It is formed.
- an electric field is formed between the protrusion of the first electrode and the inner peripheral surface of the lattice hole of the second electrode, whereby a dust collection surface is formed on the outer peripheral surface of the protrusion of the first electrode. Dust in the air to be treated is attracted to and collected by these dust collection surfaces. As a result, the air to be treated is cleaned.
- the dust collector disclosed in Patent Document 1 by disposing the two electrodes having the base portion and the protruding portion so as to face each other, the inner peripheral surface of the lattice hole of the first electrode, A dust collection surface is formed on both the outer peripheral surface of the protrusion of the first electrode.
- the area of the outer peripheral surface of the protrusion of the first electrode is relatively small as compared with the inner peripheral surface of the lattice hole of the first electrode. This is because the protrusion of the first electrode is inserted into the grid hole of the second electrode having the same inner diameter as the grid hole of the first electrode. Therefore, if the area of the outer peripheral surface of the projection of the first electrode can be further increased, the dust collection area can be further expanded, and consequently the dust collection efficiency can be improved.
- the present invention has been made in view of the above points, and an object thereof is to propose a dust collector that is compact and has a large dust collection area.
- the first invention includes a base portion (41, 51) having a lattice structure and a plurality of protrusion portions (42) protruding from the base portion (41, 51) in the axial direction of the lattice hole (46).
- First and second electrodes (40, 50) having projections (42) of the first electrode (40) inserted into the lattice holes (56) of the second electrode (50) and the second electrode Both electrodes (40, 50) are arranged to face each other so that each projection (52) of (50) is inserted into each lattice hole (46) of the first electrode (40), and the first electrode ( 40)
- the dust collector configured to form a dust collection surface for collecting dust in the air to be treated on the surface of 40).
- the protrusion (42) of the first electrode (40) is formed in a long plate shape extending over a plurality of adjacent lattice holes (46) of the first electrode (40).
- the lattice hole (56) of the second electrode (50) is formed in an elongated shape extending so as to face the protrusion (42) of the first electrode (40), and the second electrode (50)
- the protrusion (52) of the second electrode (50) is opposed to each grid hole (46) of the first electrode (40).
- it is arranged in parallel in the longitudinal direction.
- the first electrode (40) and the second electrode (50) each have a base (41, 51) and a protrusion (42, 52).
- the protrusion (52) of the second electrode (50) is inserted through the lattice hole (46) of the base part (41) of the first electrode (40). Further, the protrusion (42) of the first electrode (40) is inserted into the lattice hole (56) of the base (51) of the second electrode (50).
- a dust collecting surface is formed on the outer peripheral surface of the protrusion (42) of the first electrode (40) and the inner peripheral surface of the lattice hole (46) of the first electrode (40). Dust in the air to be treated is collected on the dust surface.
- the protrusion (42) of the first electrode (40) is formed in a long plate shape extending so as to straddle two or more adjacent lattice holes (46) of the first electrode (40). That is, in the dust collector of the disclosed example, one lattice hole corresponds to one protrusion in the first electrode (40), but in the present invention, one lattice hole corresponds to a plurality of adjacent lattice holes.
- the protrusions are formed so as to straddle the plurality of lattice holes so that the two protrusions correspond to each other.
- the lattice hole (56) is also formed in a long hole shape so as to be opposed to the protrusion (42) of the long plate-shaped first electrode (40).
- the protrusion (42) of the first electrode (40) can be formed longer than that of the disclosed example.
- the area of the outer peripheral surface of the protrusion (42) of the first electrode (40) can be made larger than the area of the outer peripheral surface of the protrusion of the disclosed example.
- a plurality of protrusions (52) are juxtaposed in the longitudinal direction at the edge (54a) on the long side of one long hole-like lattice hole (56). And these each projection part (52) of a 2nd electrode (50) is penetrated by each lattice hole (46) of a 1st electrode (40). For this reason, the area of the inner peripheral surface of the lattice hole (46) of the first electrode (40) can be made the same as the area of the inner peripheral surface of the lattice hole of the disclosed example.
- the area of the inner peripheral surface of the lattice hole (46) of the first electrode (40) remains unchanged, and the first electrode (40)
- the area of the outer peripheral surface of the protrusion (42) can be increased.
- the projection (42) of the first electrode (40) is a long plate straddling three or more adjacent lattice holes (46) of the first electrode (40). It is formed in the shape.
- the protrusion (42) of the first electrode (40) is formed so as to straddle three or more adjacent lattice holes (46), and such a long plate-like protrusion (42) is formed.
- the grid holes (56) of the second electrode (50) are formed in the shape of elongated holes so as to face each other. Thereby, the area of the outer peripheral surface of the protrusion part (42) of a 1st electrode (40) can be made larger than the area of the outer peripheral surface of the protrusion part of a disclosed example.
- the first electrode (40) and the second electrode (50) are the edges (54a) of the lattice holes (56) of the second electrode (50).
- the first partition (55) on the short side is a second partition parallel to the first partition (55) of the edge of the lattice hole (46) of the first electrode (40). It is arrange
- each 1st partition part (55) of the short side among the edge parts (54a) of the lattice hole (56) of a 2nd electrode (50) is a 2nd partition of a 1st electrode (40). It arrange
- each first partition portion (55) overlaps the second partition portion (45) and the lattice hole (46, 56) in the axial direction. )
- the flow path resistance (ventilation resistance) of the air passing through is reduced to the minimum necessary.
- the fourth invention is characterized in that, in the first to third inventions, the second electrode (50) is made of a conductive resin material.
- the second electrode (50) is made of a conductive resin material.
- the lattice hole (56) is formed in the shape of a long hole, and therefore the lattice hole (46) compared to the first electrode (40). The number of partitions is reduced. For this reason, the raw material of the resin material required in order to manufacture the 2nd electrode (50) decreases.
- the fifth invention is characterized in that, in any one of the first to fourth, the first electrode (40) is made of a metal material.
- the first electrode (40) is made of a metal material.
- the projection part (42) is formed in a long plate shape as mentioned above, compared with the 2nd electrode (50), the projection part (42) The number of For this reason, the process for manufacturing the first electrode (40) is facilitated.
- the base portion of the first electrode (40) ( 41) is characterized in that it is arranged on the upstream side of the air flow to be treated with respect to the base part (51) of the second electrode (50).
- the base part (41) of the first electrode (40) is arranged on the upstream side of the protruding part (42) of the first electrode (40).
- the area of the inner peripheral surface (dust collection surface) of the lattice hole (46) of the first electrode (40) is larger than the area of the outer peripheral surface (dust collection surface) of the protrusion of the first electrode (40). It is easy to become. Further, in the dust collector, the dust in the air to be treated decreases as the dust advances downstream. For this reason, in the present invention, a large amount of dust in the air to be treated is efficiently removed by the base portion (41) of the first electrode (40) and cannot be collected by the base portion (41). The dust can be efficiently removed by the protrusion (42) of the first electrode (40).
- the seventh invention is characterized in that, in any one of the first to sixth inventions, the aspect ratio of the lattice hole (46) of the first electrode (40) is 4 or less.
- the aspect ratio of the lattice hole (46) of the first electrode (40) is set to 4 or less. For this reason, the dust collection area in the base part of the same size can be widely obtained compared with the case where the aspect ratio of the lattice hole (46) of the first electrode (40) is larger than 4.
- the protrusion (42) of the first electrode (40) is formed in a long plate shape so as to straddle the plurality of lattice holes (46) of the first electrode (40), and the protrusion (42) Since the lattice holes (56) of the second electrode (50) are formed in an elongated shape so as to face each other, the area of the outer peripheral surface of the first electrode (40) is increased. Moreover, a plurality of protrusions (52) are arranged in parallel in the lattice holes (56) of the second electrode (50), and these protrusions (52) are connected to the lattice holes (46) of the first electrode (40).
- the area of the inner peripheral surface of the lattice hole (46) of the first electrode (40) is also relatively large.
- the area of the dust collection surface of the first electrode (40) can be made larger than that of the disclosed example. Therefore, it is possible to provide a dust collector that is relatively compact and has high dust collection efficiency.
- the number of protrusions (42) can be reduced as compared with the disclosed example, and the manufacturing cost can be reduced.
- the number of lattice holes (56), that is, the number of lattice walls can be reduced as compared with the disclosed example, and the manufacturing cost can be reduced.
- the lattice hole (56) of the second electrode (50) is enlarged in the longitudinal direction, the ventilation resistance of the lattice hole (56) can be reduced, and as a result, the pressure loss can be reduced and the power of the blower or the like can be reduced.
- the protrusion (42) of the first electrode (40) is formed in a long plate shape so as to straddle three or more lattice holes (46) of the first electrode (40).
- the area of the outer peripheral surface of the protrusion (42) of the first electrode (40) can be effectively increased.
- the number of protrusions (42) of the first electrode (40) can be effectively reduced, and the number of lattice walls of the second electrode (50) can also be effectively reduced.
- the ventilation resistance of the lattice hole (56) of the second electrode (50) can be effectively reduced.
- each first partition (55) of the second electrode (50) overlaps with the second partition (45) of the first electrode (40) and the lattice hole (56) in the axial direction.
- the first electrode (40) and the second electrode (50) are disposed. For this reason, it is possible to minimize the flow resistance of the air continuously passing through the lattice holes (46, 56) of the first electrode (40) and the second electrode (50). As a result, the pressure loss of the dust collecting electrode can be reduced, and consequently the power of the blower or the like that conveys air can be reduced.
- the second electrode (50) is made of a conductive resin material
- the raw material of the resin material can be reduced by the amount of the reduced number of lattice walls, and the manufacturing cost can be reduced.
- the first electrode (40) is made of a metal material
- the metal processing of the first electrode (40) can be facilitated as much as the number of the protrusions (42) is reduced. Manufacturing cost can be reduced.
- the dust collection area is small. Due to the relatively large inner peripheral surface of the lattice hole (46) of the first electrode (40), dust in the air on the upstream side can be sufficiently captured. Therefore, since the period until the dust collection surface of the first electrode (40) is covered with dust becomes longer, the frequency of maintenance can be reduced.
- the aspect ratio of the lattice hole (46) of the first electrode (40) is 4 or less. For this reason, the area of the inner peripheral surface of the lattice hole (46) of the first electrode (40) is relatively large, and a compact and high dust collection efficiency can be provided.
- FIG. 1 is a schematic perspective view showing the overall configuration of the air cleaner according to the embodiment.
- FIG. 2 is a schematic configuration diagram showing the inside of the air cleaner according to the embodiment.
- FIG. 3 is a perspective view showing the entire configuration of the dust collection unit according to the embodiment, in which the dust collection electrode and the high voltage electrode are disassembled.
- FIG. 4 shows the dust collection electrode and the high voltage electrode according to the embodiment, and FIG. 4 (A) is a plan view of the dust collection electrode as viewed from the dust collection side projection plate side. B) is a vertical cross-sectional view of the dust collecting electrode, FIG. 4C is a vertical cross-sectional view of the high-voltage electrode, and FIG.
- FIG. 4D is a plan view of the high-voltage electrode viewed from the side of the high-voltage projection plate.
- FIG. FIG. 5 shows a state in which the dust collection electrode and the high voltage electrode according to the embodiment are combined, and FIG. 5 (A) is a plan view of the dust collection electrode viewed from the dust collection side projection plate side.
- FIG. 5 (B) is a longitudinal sectional view of the dust collecting portion, and
- FIG. 5 (C) is a plan view of the high voltage electrode as viewed from the high voltage side projection plate side.
- FIG. 6 shows a state in which a dust collection electrode and a high voltage electrode according to another embodiment are combined, and FIG. 6A is a plan view of the dust collection electrode as viewed from the dust collection side projection plate side.
- FIG. 6B is a longitudinal sectional view of the dust collecting portion
- FIG. 6C is a plan view of the high-voltage electrode viewed from the high-pressure side protruding plate side.
- FIG. 7 is a state in which the dust collection electrode and the high voltage electrode according to the comparative example are combined
- FIG. 7A is a plan view of the dust collection electrode as viewed from the dust collection side projection plate side.
- FIG. 7B is a vertical cross-sectional view of the dust collecting portion
- FIG. 7C is a plan view of the high-voltage electrode viewed from the high-pressure side protruding plate side.
- the air cleaner (10) of the present embodiment is a consumer-use air purifier used in ordinary homes and small stores, and constitutes a dust collector according to the present invention.
- the air cleaner (10) includes a casing (20), and a prefilter (11), a charging unit (12), and a collector housed in the casing (20).
- a dust part (30), a catalyst filter (13), and a blower (14) are provided.
- the casing (20) is formed in, for example, a rectangular horizontally long container, the front surface is formed in the air inlet (21), the back surface is formed in the air outlet (22), and the inside is an air passage. (23) formed.
- the prefilter (11), the charging part (12), the dust collecting part (30), the catalyst filter (13), and the blower (14) are arranged in order from the suction port (21) toward the blowout port (22). ing.
- the pre-filter (11) constitutes a filter for collecting relatively large dust contained in the air sucked into the casing (20) from the suction port (21).
- the charging unit (12) constitutes an ionization unit and charges relatively small dust that has passed through the prefilter (11).
- the charging unit (12) includes, for example, a plurality of ionization lines and a plurality of counter electrodes, and is configured such that a DC voltage is applied between the ionization lines and the counter electrodes.
- the ionization line is provided from the upper end to the lower end of the charging unit (12), and the counter electrode is disposed between the ionization lines. In the charging unit (12), dust in the air to be treated is charged to a positive charge.
- the dust collection part (30) adsorbs and collects dust charged by the charging part (12). Details of the dust collection section (30) will be described later.
- the catalyst filter (13) is configured, for example, by supporting a catalyst on the surface of a substrate having a honeycomb structure.
- a catalyst for example, a manganese-based catalyst, a noble metal catalyst, or the like is used, and decomposes harmful components and odor components in the air from which dust has been removed after passing through the dust collecting part (30).
- the blower (14) is arranged on the most downstream side in the air passage (23) in the casing (20).
- the blower (14) is for sucking room air into the casing (20) and blowing out clean air into the room.
- the dust collection part (30) includes a dust collection electrode (40) as a first electrode and a high voltage electrode (50) as a second electrode.
- the dust collection electrode (40) and the high voltage electrode (50) are connected to a DC power source, and a voltage is applied to both electrodes (40, 50) from the DC power source.
- the dust collection electrode (40) is connected to the ground side, and the high voltage electrode (50) is connected to the positive side of the DC power supply. For this reason, the dust charged positively by the charging unit (12) is collected on the surface of the dust collecting electrode (40). That is, a dust collection surface for collecting dust in the air to be treated is formed on the surface of the dust collection electrode (40).
- the dust collection electrode (40) is made of a metal material, and more specifically, is made of a thin metal plate made of conductive stainless spring steel.
- the high voltage electrode (50) is made of a conductive resin material.
- the high voltage electrode (50) is integrally formed by injection molding or the like.
- the material of the high voltage electrode (50) is preferably a slightly conductive resin, and particularly preferably a resin having a volume resistivity of 10 8 ⁇ cm or more and 10 13 ⁇ cm or less.
- the dust collecting electrode (40) and the high-voltage electrode (50) have similar shapes to each other, and a part of the dust collecting electrode (40) and the high-voltage electrode (50) are configured to be freely inserted into each other (see FIG. 3).
- the dust collecting electrode (40) is disposed near the upstream side of the air flow in the air passage (23), and the high voltage electrode (50) is disposed near the downstream side of the air flow in the air passage (23). .
- the dust collecting electrode (40) includes a dust collecting side base (41) and a dust collecting side projection plate (42). Further, the dust collection side base part (41) includes a plurality of vertical partition parts (44) and a plurality of horizontal partition parts (45).
- the vertical partition portion (44) and the horizontal partition portion (45) are each formed in a plate shape, and are arranged in parallel to each other with a predetermined interval. In the dust collection side base portion (41), the interval between the vertical partition portions (44) is narrower than the interval between the horizontal partition portions (45).
- the dust collection side base part (41) forms a base part of a square lattice structure by combining a plurality of vertical partition parts (44) and a plurality of horizontal partition parts (45) so as to be orthogonal to each other. .
- a plurality of rectangular lattice holes (46) are partitioned by the vertical partition (44) and the horizontal partition (45).
- the aspect ratio of each lattice hole (46) of the dust collection electrode (40) is 2.0 or more and 4.0 or less.
- the aspect ratio is defined as a ratio of a to b (a / b) where a is the vertical length of the lattice hole (46) and b is the horizontal length of the lattice hole (46). ) (See FIG. 4).
- the plurality of dust collection side projection plates (42) are formed at the end of the vertical partition (44) of the dust collection side base (41) in the width direction (the axial direction of the lattice holes (46)). Yes. That is, the dust collection side projection plate (42) constitutes a projection that protrudes from the dust collection side base (41) in the axial direction of the lattice hole (46).
- the vertical partitioning portion (44) and the dust collecting side projection plate (42) constitute an integral single metal plate.
- the dust collecting side projection plate (42) is formed in a long plate shape extending so as to straddle three adjacent lattice holes (46) of the dust collecting side base portion (41). That is, the dust collection side projection plate (42) extends in the longitudinal direction of the vertical partitioning portion (44) (for example, the vertical direction in FIG. 4) so as to straddle a plurality of lattice holes (46) adjacent to each other in the same row. It is formed in a substantially long plate shape. Moreover, in this embodiment, the three dust collection side projection plates (42) are arranged in parallel by one vertical partition part (44) (refer FIG. 3).
- the high voltage electrode (50) includes a high voltage side base (51) and a high voltage side protruding plate (52). Furthermore, the high-pressure side base part (51) includes a frame part (53), a plurality of vertical partition parts (54), and a plurality of horizontal partition parts (55). Moreover, in the dust collection part (30), the dust collection side base part (41) is arrange
- the frame portion (53) is formed in a rectangular shape, and the vertical partition portion (54) and the horizontal partition portion (55) are integrally supported therein.
- the vertical partition (54) and the horizontal partition (55) are each formed in a plate shape, and are arranged in parallel to each other with a predetermined interval.
- pressure side base part (51) is the vertical partition part (44) and horizontal partition part ( It is larger than the plate thickness of 45).
- interval of vertical partition parts (54) is narrower than the space
- the high-pressure side base part (51) forms a base part of a square lattice structure by combining a plurality of vertical partition parts (54) and a plurality of horizontal partition parts (55) so as to be orthogonal to each other. And in the high voltage
- the grid holes (56) of the high-voltage electrode (50) are elongated holes extending in the extending direction of the dust collection side projection plate (42) (for example, the vertical direction in FIG. 4) so as to face the dust collection side projection plate (42). It is formed in a shape. That is, the length of the vertical partition (54) is such that the lattice hole (56) of the high-voltage electrode (50) substantially corresponds to the three adjacent lattice holes (46, 46, 46) of the dust collection electrode (40). It has a vertically long rectangular shape extending in the direction.
- the aspect ratio of each lattice hole (56) of the high voltage electrode (50) is larger than the aspect ratio of the lattice hole (46) of the dust collecting electrode (40).
- the aspect ratio of each lattice hole (56) of the high-voltage electrode (50) is three times the aspect ratio of the lattice hole (46) of the dust collection electrode (40). That is, in the dust collection part (30) of the present embodiment, the aspect ratio of each lattice hole (56) of the high-voltage electrode (50) is an integral multiple of the aspect ratio of the lattice hole (46) of the dust collection electrode (40) ( In this embodiment, it is configured to be 3 times).
- the aspect ratio of each lattice hole (56) of the high-voltage electrode (50) is not necessarily an integer multiple of the aspect ratio of the lattice hole (46) of the dust collecting electrode (40).
- the plurality of high-pressure side protruding plates (52) are formed at the end of the vertical partition (54) of the high-pressure side base (51) in the width direction (the axial direction of the lattice holes (56)). That is, the high-pressure side protruding plate (52) constitutes a protruding portion that protrudes from the high-pressure side base portion (51) in the axial direction of the lattice hole (56).
- the length in the width direction (longitudinal direction of the vertical partition portion (54)) of the high-pressure side projection plate (52) is the length of the width direction (longitudinal direction of the vertical partition portion (44)) of the dust collection side projection plate (42). It is shorter than that.
- each dust collecting side projection plate (42) is placed in each lattice hole (56) of the high voltage electrode (50).
- the high-pressure-side protruding plate (52) is inserted through each lattice hole (46) of the dust collecting electrode (40).
- the dust collection electrode (40) and the high voltage electrode (50) are opposed to each other with a predetermined distance between the dust collection side base part (41) and the high pressure side base part (51) without contacting each other. Placed in.
- each horizontal partition (55) of the high-voltage electrode (50) is located substantially on the same plane as the horizontal partition (45) of the dust collecting electrode (40). That is, the high-voltage electrode (50) and the dust collecting electrode (40) are the first partition portions (lateral partition portions (side partition portions) on the short side) of the edge portions (54a) of the lattice holes (56) of the high-voltage electrode (50). 55)) is the axial direction of the second partition part (lateral partition part (45)) parallel to the first partition part (55) and the respective lattice holes (46, 56) of the edge of the dust collecting electrode (40) Are arranged so as to overlap each other.
- all the horizontal partition parts (55) of the high-voltage electrode (50) are connected to the horizontal partition part (45) of the dust collecting electrode (40) and the axial direction (air flow) of the lattice holes (46, 56).
- the dust collecting part (30) is configured so that it always overlaps in the direction).
- each vertical partition (44) of the dust collection electrode (40) and each vertical partition (54) of the high-voltage electrode (50) are arranged in a staggered manner in the extending direction of the horizontal partition (45, 55). Is done.
- the high-pressure-side protruding plate (52) is positioned at the center in the width direction of the lattice hole (46) of the dust-collecting electrode (40), and the dust-collecting-side protruding plate (42) Is located in the center of the lattice hole (56) in the width direction.
- the high-pressure-side protruding plate (52) is located in the center of the grid hole (46) in the longitudinal direction of the dust collecting electrode (40), and the dust-collecting-side protruding plate (42) It is located at the center in the longitudinal direction of the lattice hole (56).
- pressure side projection board (52). Is formed.
- a rectangular cylindrical vent through which air to be treated flows is provided between the inner peripheral surface of the lattice hole (56) and the outer peripheral surface of the dust collecting side projection plate (42).
- the distance between the outer peripheral surface of the high-pressure projection plate (52) and the inner peripheral surface of the lattice hole (46) is a substantially uniform distance over the entire periphery. Further, the distance between the outer peripheral surface of the dust collection side projection plate (42) and the inner peripheral surface of the lattice hole (56) is also a substantially uniform distance over the entire periphery.
- the dust collection electrode (40) When a potential difference is applied between the dust collection electrode (40) and the high voltage electrode (50) in the dust collection section (30) having the above configuration, the dust collection electrode (40) is separated from the high voltage electrode (50). An electric field is formed on the dust collecting electrode (40), and a dust collecting surface for collecting dust in the air to be treated is formed on the surface of the dust collecting electrode (40).
- the air holes between the inner peripheral surface of the lattice hole (46) and the outer peripheral surface of the high pressure side projection plate (52) are radial in a cross-sectional view. Is formed.
- dust collection surfaces (48, 48, 48, 48) for collecting positively charged dust are formed on the inner peripheral surface of the lattice hole (46).
- a radial electric field in a cross-sectional view is generated in the vent hole between the outer peripheral surface of the dust collecting side projection plate (42) and the inner peripheral surface of the lattice hole (56). It is formed.
- dust collection surfaces (58, 58, 58, 58) for collecting positively charged dust are formed on the outer peripheral surface of the dust collection side projection plate (42).
- the room air sucked into the air passage (23) of the casing (20) first passes through the prefilter (11).
- the prefilter (11) collects relatively large dust contained in the room air.
- the room air that has passed through the prefilter (11) flows to the charging section (12).
- relatively small dust that has passed through the prefilter (11) is positively charged, and the positively charged dust flows downstream.
- the positively charged dust flows through the dust collecting part (30) together with the room air.
- room air flows into the dust collection side base part (41).
- room air flows through the ventilation holes of the lattice holes (46).
- an electric field is formed between the inner peripheral surface of the lattice hole (46) and the outer peripheral surface of the high-pressure side protruding plate (52).
- the positively charged dust is attracted and attached to the dust collecting surface (48) on the inner peripheral side of the lattice hole (46). As a result, dust in the room air is removed.
- the high-pressure side base part (51) room air flows through the ventilation holes of the lattice holes (56).
- an electric field is formed between the inner peripheral surface of the lattice hole (56) and the outer peripheral surface of the dust collecting side projection plate (42). For this reason, the dust remaining in the room air is attracted and adhered to the dust collecting surface (58) on the outer periphery of the dust collecting side projection plate (42). As a result, dust in the indoor air is further removed.
- the catalytic filter (13) harmful substances and odorous substances in the air are decomposed / removed.
- the air purified as described above passes through the blower (14) and is supplied into the room from the blower outlet (22).
- the air cleaner (10) cleans room air by performing such an operation.
- the area of the dust collection surface in the dust collection electrode (40) becomes larger than the area of the dust collection surface of the dust collection electrode of the comparative example shown in FIG. Improvements are being made.
- the dust collection side base portion (81) having the lattice structure of the dust collection electrode (80) corresponds to one lattice hole (86).
- a dust collecting side projection plate (82) is formed on the surface. That is, in the vertical partition part (84) of the dust collection side base part (81), one dust collection side projection plate (82) is formed so as to be adjacent to one lattice hole (86).
- the lattice hole (96) is formed so as to correspond to each dust collection side projection plate (82). Further, in the high pressure side base portion (91), a high pressure side projection plate (92) is formed on the vertical partition portion (94) so as to correspond to one lattice hole (96).
- the dust collection electrode (80) and the high voltage electrode (90) have substantially the same structure, and the grid holes (86) of the dust collection electrode (80) ) And the aspect ratio of the grid hole (96) of the high-voltage electrode (90) are almost the same.
- a plurality of lattice holes (46) are provided in the dust collection side base portion (41) of the lattice structure of the dust collection electrode (40).
- a lattice hole (56) having a larger aspect ratio than the lattice hole (46) is formed.
- the edge (54a) on the long side of the lattice hole (56) of the high pressure side base portion (91) corresponds to each lattice hole (46) of the dust collection side base portion (41).
- a plurality of high-pressure side protruding plates (52) are arranged in parallel.
- the dust collection surface similar to the dust collection electrode (80) of a disclosed example is first formed on the inner peripheral surface of the lattice hole (46) of the dust collection electrode (40). Can be formed. Furthermore, in the dust collection electrode (40) of the present embodiment, a larger dust collection surface than the dust collection electrode (80) of the disclosed example can be formed on the outer peripheral surface of the dust collection side projection plate (42). That is, in the dust collection part (30) of this embodiment, the space
- the dust collection side projection plate (42) can be extended in the longitudinal direction of the vertical partition (44), the area of the outer peripheral surface of the dust collection side projection plate (42) can be increased accordingly. it can. Therefore, in the dust collection part (30) of this embodiment, the dust in indoor air can be collected effectively also in the downstream part, and the dust collection efficiency is improved.
- a long plate-like dust collection side projection plate (42) is formed so as to straddle the three lattice holes (46), and the high voltage electrode (50)
- elongated hole-like lattice holes (56) are formed so as to correspond to the dust collecting side projection plate (42).
- the dust collecting surface (48) on the outer peripheral side of the dust collecting side projection plate (42) can be enlarged, and a dust collecting portion (30) that is relatively compact and has high dust collecting efficiency can be provided.
- the number of the dust collection side projection plates (42) can be reduced as compared with the comparative example. Therefore, processing of the metal plate constituting the dust collection side projection plate (42) becomes easy, and manufacturing time and manufacturing cost can be reduced. Furthermore, in the high-voltage electrode (50), the number of horizontal partition portions (45) can be reduced as compared with the comparative example. For this reason, the quantity of the resin material for forming a high voltage electrode (50) can be reduced, and manufacturing cost can be reduced.
- the lattice hole (56) is larger than that of the comparative example, the resistance of the ventilation hole of the lattice hole (56) is reduced, and the pressure loss can be reduced. Therefore, the power of the blower (14) can be reduced. Further, since the lattice holes (56) are enlarged, it is possible to avoid clogging due to accumulation of dust in the lattice holes (56).
- the dust collecting side base part (41) is arranged on the upstream side, and the high pressure side base part (51) is arranged on the downstream side.
- the dust collecting surface formed on the inner peripheral surface of the lattice hole (46) of the dust collecting side base portion (41) is more than the dust collecting surface formed on the outer peripheral surface of the dust collecting side projection plate (42).
- the dust collection part (30) since the area is large, dust in the indoor air can be efficiently removed on the dust collection side base (41) side, and the remaining dust can be efficiently removed on the high pressure side base (51). That is, in the dust collection part (30), since the dust collection surface is formed so as to correspond to the amount of dust in the air to be treated, dust can be removed with high efficiency over a long period of time.
- the aspect ratio of the lattice hole (46) is 4 or less, the area of the dust collection surface on the inner periphery of the lattice hole (46) becomes relatively large, and the dust collection efficiency is compact. High dust collection part (30) can be provided. Furthermore, since the aspect ratio is set to 2 or more, it is possible to ensure a certain level of strength of the dust collecting side projection plate (42).
- the dust collection side projection board (42) is formed so that it may straddle three adjacent lattice holes (46), it straddles two or more adjacent lattice holes (46).
- a dust collecting projection plate (42) may be formed on the surface.
- the example shown in FIG. 6 is an example in which the dust collection side projection plate (42) is formed so as to straddle two adjacent lattice holes (46).
- the high-voltage side projection plate (52) is placed in each grid hole (46) of the dust collecting electrode (40). Two are arranged in parallel in the longitudinal direction so as to face each other. For this reason, also in the example of FIG. 6, the area of the outer peripheral surface of a dust collection side projection plate (42) can be expanded, and improvement of dust collection efficiency can be aimed at.
- the aspect ratio of the grid hole (56) of the high-voltage electrode (50) is approximately twice the aspect ratio of the grid hole (46) of the dust collecting electrode (40) (that is, an integral multiple).
- all the horizontal partition portions (55) of the high-voltage electrode (50) are overlapped in the axial direction of the horizontal partition portion (45) of the dust collection electrode (40) and the lattice hole (46).
- the flow path resistance of the air which flows through a lattice hole (46,56) can be reduced, and the pressure loss of a dust collection part (30) can be reduced.
- the dust collection electrode (40) may be made of a conductive resin material, and the high voltage electrode (50) may be made of a metal material.
- the charging unit (12) may be one that charges dust negatively, and the dust collection electrode (40) is formed with a dust collection surface that collects negatively charged dust. Also good.
- the dust collection side base part (41) of the dust collection electrode (40) is arrange
- pressure side base part (51) of the high voltage electrode (50) is arrange
- the high pressure side base part (51) may be arranged on the upstream side
- the dust collection side base part (41) may be arranged on the downstream side.
- the present invention is useful for a dust collector that forms an electric field between electrodes and collects dust in the air to be treated on the dust collection surface of the electrode.
- Dust collector dust collector
- Dust collection electrode first electrode
- Dust collection side base base
- Dust collection side projection plate projection plate
- Horizontal partition second partition
- Lattice hole High voltage electrode (second electrode)
- High-pressure side base base
- High-pressure side protrusion protrusion
- Horizontal partition first partition
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
第6の発明は、第1乃至第5のいずれか1つの発明において、上記第1電極(40)の基台部(41)は、第2電極(50)の基台部(51)よりも上記被処理空気流れの上流側に配置されていることを特徴とする。
図1および図2に示すように、空気清浄機(10)は、ケーシング(20)を備えると共に、該ケーシング(20)の内部に収納されたプレフィルタ(11)と荷電部(12)と集塵部(30)と触媒フィルタ(13)と送風機(14)とを備えている。
上記集塵部(30)の詳細構造について図3~図5を参照しながら説明する。集塵部(30)は、第1電極としての集塵電極(40)と、第2電極としての高圧電極(50)とを備えている。集塵電極(40)及び高圧電極(50)は、直流電源に接続されており、直流電源から両電極(40,50)に電圧が印加される。具体的には、集塵電極(40)はアース側に接続され、高圧電極(50)は直流電源のプラス側に接続されている。このため、荷電部(12)でプラスに帯電した塵埃は、集塵電極(40)の表面に捕集される。即ち、集塵電極(40)の表面には、被処理空気中の塵埃を捕集するための集塵面が形成されている。
次に空気清浄機(10)の運転動作について説明する。図1および図2に示すように、送風機(14)を駆動すると、被処理空気である室内空気がケーシング(20)の空気通路(23)に吸引され、該空気通路(23)を流れる。また、空気清浄機(10)では、荷電部(12)のイオン化線と対向電極との間に直流電圧が印加され、集塵部(30)の集塵電極(40)と高圧電極(50)との間に直流電圧が印加される。
本実施形態の集塵部(30)では、集塵電極(40)における集塵面の面積が、図7に示す比較例の集塵電極の集塵面の面積よりも大きくなり、集塵効率の向上が図られている。具体的には、先ず、比較例の集塵部(70)では、集塵電極(80)の格子構造の集塵側基台部(81)において、1つの格子穴(86)に対応するように集塵側突起板(82)が形成されている。つまり、集塵側基台部(81)の縦仕切部(84)では、1つの格子穴(86)に隣接するように1枚の集塵側突起板(82)が形成されている。そして、高圧電極(90)の格子構造の高圧側基台部(91)においては、各集塵側突起板(82)に対応するようにして、格子穴(96)が形成されている。また、高圧側基台部(91)では、1つの格子穴(96)に対応するようにして縦仕切部(94)に高圧側突起板(92)が形成されている。以上のように、比較例の集塵部(70)では、集塵電極(80)と高圧電極(90)とが概ね同様の構造となっており、集塵電極(80)の格子穴(86)のアスペクト比と高圧電極(90)の格子穴(96)のアスペクト比も概ね同じ値となっている。
本実施形態では、第1電極としての集塵電極(40)において、3つの格子穴(46)に跨るように長板状の集塵側突起板(42)を形成し、高圧電極(50)において、集塵側突起板(42)に対応するように長穴状の格子穴(56)を形成している。このため、集塵側突起板(42)の外周側の集塵面(48)を大きくすることができ、比較的コンパクトで且つ集塵効率の高い集塵部(30)を提供することができる。
上記実施形態では、隣り合う3つの格子穴(46)に跨るように集塵側突起板(42)を形成しているが、隣り合う2つ又は4つ以上の格子穴(46)に跨るように集塵側突起板(42)を形成しても良い。
40 集塵電極(第1電極)
41 集塵側基台部(基台部)
42 集塵側突起板(突起部)
45 横仕切部(第2仕切部)
46 格子穴
50 高圧電極(第2電極)
51 高圧側基台部(基台部)
52 高圧側突起板(突起部)
55 横仕切部(第1仕切部)
56 格子穴
Claims (7)
- 格子構造の基台部(41,51)と、該基台部(41,51)から格子穴(46,56)の軸方向に突出する複数の突起部(42,52)とをそれぞれ有する第1と第2の電極(40,50)を備え、第1電極(40)の各突起部(42)が第2電極(50)の各格子穴(56)に挿通し且つ第2電極(50)の各突起部(52)が第1電極(40)の各格子穴(46)に挿通するように両電極(40,50)が対向して配置されると共に、上記第1電極(40)の表面に被処理空気中の塵埃を捕集する集塵面を形成するように構成された集塵装置であって、
上記第1電極(40)の突起部(42)は、該第1電極(40)の隣り合う複数の格子穴(46)に跨るように延びる長板状に形成され、
上記第2電極(50)の格子穴(56)は、上記第1電極(40)の突起部(42)に相対するように延びる長穴状に形成され、
上記第2電極(50)の格子穴(56)の長辺側の縁部(54a)では、該第2電極(50)の突起部(52)が上記第1電極(40)の各格子穴(46)にそれぞれ相対するように、長手方向に並設されていることを特徴とする集塵装置。 - 請求項1において、
上記第1電極(40)の突起部(42)は、該第1電極(40)の隣り合う3つ以上の格子穴(46)に跨る長板状に形成されていることを特徴とする集塵装置。 - 請求項1又は2において、
上記第1電極(40)及び第2電極(50)は、
上記第2電極(50)の各格子穴(56)の縁部(54a)のうち短辺側となる各第1仕切部(55)が、上記第1電極(40)の格子穴(46)の縁部のうち該第1仕切部(55)と平行な第2仕切部(45)と格子穴(46,56)の軸方向において重畳するように配設されていることを特徴とする集塵装置。 - 請求項1乃至3のいずれか1において、
上記第2電極(50)は、導電性の樹脂材料で構成されていることを特徴とする集塵装置。 - 請求項1乃至4のいずれか1つにおいて、
上記第1電極(40)は、金属材料で構成されていることを特徴とする集塵装置。 - 請求項1乃至5のいずれか1つにおいて、
上記第1電極(40)の基台部(41)は、第2電極(50)の基台部(51)よりも上記被処理空気流れの上流側に配置されていることを特徴とする集塵装置。 - 請求項1乃至6のいずれか1つにおいて、
第1電極(40)の格子穴(46)のアスペクト比が4以下であることを特徴とする集塵装置。
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CN2009801454244A CN102209591B (zh) | 2008-11-14 | 2009-08-27 | 集尘装置 |
ES09825855.1T ES2523674T3 (es) | 2008-11-14 | 2009-08-27 | Colector de polvo |
US13/125,166 US8657937B2 (en) | 2008-11-14 | 2009-08-27 | Dust collector |
KR1020117013533A KR101206572B1 (ko) | 2008-11-14 | 2009-08-27 | 집진장치 |
AU2009315189A AU2009315189B2 (en) | 2008-11-14 | 2009-08-27 | Dust collector |
EP09825855.1A EP2347829B1 (en) | 2008-11-14 | 2009-08-27 | Dust collecting device |
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- 2009-08-27 EP EP09825855.1A patent/EP2347829B1/en not_active Not-in-force
- 2009-08-27 AU AU2009315189A patent/AU2009315189B2/en not_active Ceased
- 2009-08-27 WO PCT/JP2009/004181 patent/WO2010055600A1/ja active Application Filing
- 2009-08-27 CN CN2009801454244A patent/CN102209591B/zh active Active
- 2009-08-27 KR KR1020117013533A patent/KR101206572B1/ko not_active IP Right Cessation
- 2009-08-27 US US13/125,166 patent/US8657937B2/en not_active Expired - Fee Related
- 2009-08-27 ES ES09825855.1T patent/ES2523674T3/es active Active
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See also references of EP2347829A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20110197768A1 (en) | 2011-08-18 |
ES2523674T3 (es) | 2014-11-28 |
JP4462385B1 (ja) | 2010-05-12 |
KR101206572B1 (ko) | 2012-11-30 |
AU2009315189B2 (en) | 2012-09-20 |
EP2347829B1 (en) | 2014-10-29 |
CN102209591A (zh) | 2011-10-05 |
CN102209591B (zh) | 2013-07-03 |
AU2009315189A1 (en) | 2010-05-20 |
EP2347829A1 (en) | 2011-07-27 |
KR20110095329A (ko) | 2011-08-24 |
JP2010137218A (ja) | 2010-06-24 |
US8657937B2 (en) | 2014-02-25 |
EP2347829A4 (en) | 2013-10-16 |
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