WO2008010418A1

WO2008010418A1 - Dust collector and air conditioner

Info

Publication number: WO2008010418A1
Application number: PCT/JP2007/063392
Authority: WO
Inventors: Kenkichi Kagawa; Yasuhiro Oda; Tooru Fujimoto; Toshio Tanaka; Kanji Motegi; Ryuji Akiyama
Original assignee: Daikin Industries, Ltd.
Priority date: 2006-07-18
Filing date: 2007-07-04
Publication date: 2008-01-24
Also published as: JP4270234B2; JP2008023413A

Abstract

An air cleaner (10) has in its casing (20) a prefilter unit (30), a flocculation unit (70), and a collection unit (50). Air to be treated, from which large-sized dust and dirt are removed by the prefilter (31), flows into the flocculation unit (70). In the flocculation unit (70), fine airborne particles in the air to be treated are captured by a dust collection electrode, and the airborne particles flocculate on the dust collecting electrode to become flocculated particles. When the flocculated particles grow to a certain size, they are separated from the dust collection electrode and dispersed in the air to be treated. In the dust collecting unit (50) disposed on the downstream side of the flocculation unit (70), the flocculated particles in the air to be treated are captured by a dust collection filter (51). The flocculated particles collected by the dust collection filter are removed from the filter (51) by a second cleaning unit (60).

Description

Specification

Dust collector and air conditioner

Technical field

[0001] The present invention relates to a dust collecting device for removing airborne particles to be treated such as air and combustion exhaust gas.

Background art

Conventionally, a dust collector has been used to collect dust and dust in indoor air, dust in combustion exhaust gas, and the like.

[0003] 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. Specifically, 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.

[0004] Further, as a dust collector, one using a high performance filter such as HEPA (High Efficiency Particulate AirFilter) is also known. In this type of dust collector, 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

Disclosure of the invention

Problems to be solved by the invention

[0005] In the above-described electrostatic precipitator, suspended particles are collected by an electric attractive force, so even if the distance between the dust collecting electrode plate and the counter electrode plate is not so narrow, for example, a fine particle having a particle diameter of about 1 μm. It can collect up to particles. Therefore, even when collecting fine particles, the pressure loss of the gas to be treated when passing through the electrostatic precipitator is not so large. However, this electrostatic precipitator has a structure that allows airborne particles to adhere to the surface of the precipitator electrode plate. For this purpose, the surface area of the dust collecting electrode plate must be increased, which increases the size of the device.

[0006] On the other hand, in a dust collector using a high-performance filter, for example, a problem that the size of the device is increased is the case of an electrostatic dust collector because trapped particles are captured by a filter in which glass fibers and the like are collected at high density. Not as serious. However, in this type of dust collector, there is a problem that the pressure loss of the gas to be processed when passing through the filter increases as the fine particles are collected.

[0007] 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. Another object of the present invention is to provide an air conditioner equipped with such a dust collector.

Means for solving the problem

[0008] A first invention is directed to a dust collector. And a gas passage through which the gas to be treated flows

The agglomerated part (70) is arranged in (23) to aggregate the suspended particles (100) in the gas to be treated to form aggregated particles (101) and to disperse the formed aggregated particles (101) in the gas to be treated (70 ) And a dust collecting filter (51) that is disposed downstream of the aggregation portion (70) in the gas passage (23) and collects the aggregated particles (101) in the gas to be treated that has passed through the aggregation portion (70). ) And a purification mechanism (60) for removing the aggregated particles (101) from the dust collection filter (51) and purifying the dust collection filter (51).

[0009] In the first invention, the suspended particles (100) in the air to be treated are once collected in the aggregation part (70). 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). When the agglomerated particles (101) reach a certain size, they move away from the agglomerated part (70) and flow to the dust collecting filter (51) together with the gas to be treated. For example, fine suspended particles (100) with a particle size of about 1 μm collected in the agglomeration part (70) become part of the larger agglomerated particles (101) with a relatively large particle size (51). ). The dust collecting filter (51) collects the agglomerated particles (101) that have flowed from the aggregating part (70) together with the gas to be treated. The aggregated particles (101) collected by the dust collection filter (51) are removed by the purification mechanism (60). [0010] In a second aspect based on the first aspect, the aggregation part (70) includes a particle charging part (71) for charging floating particles (100) in the gas to be treated, and the particle charging part. And a particle trapping part (74) for trapping and aggregating the floating particles (100) charged in (71) by electrical attraction.

[0011] In the second invention, 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. Then, in the particle trapping part (74), the plurality of trapped suspended particles (100) are aggregated to form aggregated particles (101).

[0012] In a third aspect based on the first or second aspect, the purification mechanism (60) includes a drive mechanism (56) for moving the dust collection filter (51), and the drive mechanism (56). And a scraping member (61, 65, 66) that is installed in contact with the dust filter (51) that is driven by the dust collector and scrapes the condensed particles from the dust filter (51). It is.

[0013] In the third invention, the dust collecting filter (51) is brought into contact with the dust collecting filter (51) driven and moved by the drive mechanism (56) to contact the scraping member (61, 65, 66). Force Agglomerated particles (101) are removed.

[0014] In a fourth aspect based on the third aspect, the drive mechanism (56) is the dust collecting filter.

(51) is configured to reciprocate.

[0015] In the fourth invention, the dust collecting filter (51) force agglomerated particles (101) can be obtained by bringing the scraping member (61, 65, 66) into contact with the reciprocating dust collecting filter (51). Removed.

[0016] In a fifth aspect based on the third aspect, the dust collection filter (51) is formed in an endless sheet shape, while the drive mechanism (56) includes the dust collection filter (51). It is configured to move in one direction.

In the fifth invention, the dust collection filter (51) formed in an endless loop shape is moved only in a certain direction by the drive mechanism (56). In this invention, the dust particles (101) are removed from the dust collection filter (51) by bringing the scraping member (61, 65, 66) into contact with the dust collection filter (51) moving in one direction. .

[0018] In a sixth aspect based on the fifth aspect, the dust collecting filter (51) is the gas passage. (23) is arranged from the downstream side to the upstream side of the aggregation part (70), and a part of the suspended particles (100) in the gas to be treated flowing into the aggregation part (70) is removed from the aggregation part (70). ) And the aggregated particles (101) in the gas to be treated that have passed through the aggregation part (70) are collected at the part located downstream of the aggregation part (70). It is comprised as follows.

[0019] In the sixth invention, the dust collection filter (51) formed in an endless loop shape collects a part of the suspended particles (100) on the upstream side of the agglomeration part (70) and collects the agglomeration part ( On the downstream side of 70), the aggregated particles (101) formed in the aggregated part (70) are collected. In the present invention, the suspended particles (100) not collected in the part of the dust collection filter (51) located upstream of the agglomeration part (70) are agglomerated with each other in the agglomeration part (70). Large agglomerated particles (101), and are collected as part of the agglomerated particles (101) in a part of the dust collection filter (51) located downstream of the agglomerated part (70).

[0020] In a seventh aspect based on the third aspect, the purification mechanism (60) is characterized in that the dust collection filter

(51) The drive mechanism (56) includes the dust collecting filter (51), while being provided with a nozzle connection (63) to which a vacuum cleaner is connected in order to suck out the aggregated particles (101) removed. And a power generation mechanism (55) for generating a driving force for driving the vacuum cleaner using a suction force of a cleaner connected to the nozzle connection portion (63).

[0021] In the seventh invention, the agglomerated particles (101) removed from the dust collecting filter (51) are sucked out to the cleaner by connecting the cleaner to the nozzle connection part (63). In the present invention, the power generation mechanism (55) generates a driving force by using the suction force of the vacuum cleaner connected to the nozzle connection portion (63). The dust collection filter (51) is driven by the driving force obtained by the power generation mechanism (55).

[0022] In an eighth aspect based on the seventh aspect, the purification mechanism (60) includes the dust collection filter.

(51) Force A conveyance member (57) for conveying the removed aggregated particles (101) to the nozzle connection portion (63) using the driving force generated by the power generation mechanism (55) is provided.

In the eighth aspect of the invention, the aggregated particles (101) from which the dust collecting filter (51) is removed are collected by the conveying member (57) at the nozzle connecting portion (63). At that time, the conveying member (57) conveys the aggregated particles (101) using the driving force generated by the power generation mechanism (55) using the suction force of the vacuum cleaner.

[0024] In a ninth aspect based on the first or second aspect, the purification mechanism (60) A removable holding container (62) configured to hold the aggregated particles (101) removed from the dust filter (51) is provided.

[0025] In the ninth invention, the purification mechanism (60) is provided with the holding container (62). When a certain amount of aggregated particles (101) accumulate in the holding container (62), the user removes the holding container (62) and discards the aggregated particles (101).

[0026] A tenth invention is the holding container (10) according to the first or second invention, wherein the purification mechanism (60) holds the aggregated particles (101) removed from the dust collection filter (51). 62), on the other hand, the holding container (62) is provided with the force of the nozzle connection (63) to which the suction nozzle (68) of the vacuum cleaner is connected in order to suck out the aggregated particles (101) to be held. is there.

[0027] In the tenth invention, the aggregated particles (101) from which the dust collecting filter (51) force has also been removed are stored in the holding container (62). If the suction nozzle (68) of the vacuum cleaner is connected to the nozzle connection (63) of the holding container (62) and the vacuum cleaner is operated in this state, the aggregated particles (101) in the holding container (62) are removed from the vacuum cleaner. It is sucked out.

[0028] An eleventh invention is directed to an air conditioner. The dust collector according to any one of the first to tenth inventions and a casing (23) forming a gas passage (23) in which the air as the gas to be treated flows and in which the dust collector is installed ( 20) and a heat exchanger (26) installed downstream of the dust collector in the gas passage (23) to exchange heat between the air flowing through the gas passage (23) and the refrigerant. .

[0029] In the eleventh invention, the air conditioner is provided with the dust collector (10) of any one of the first to tenth inventions. In this air conditioner, the treated air purified by the dust collector (10) is sent to the heat exchanger (26) to be cooled or heated. After being purified, the temperature of the air to be treated is blown out from the casing (20) into the room.

The invention's effect

In the present invention, the aggregated particles (101) are formed by aggregating a plurality of suspended particles (100) in the agglomerated part (70), and the agglomerated particles (101) dust formed in the agglomerated part (70) are formed. Collected by filter (51). In the dust collecting apparatus (10) of the present invention, for example, fine floating particles (100) having a particle size of about 1 μm are formed by agglomerated particles (101) having a relatively large particle size and a force of a plurality of floating particles (100). Part of it is collected by the dust collection filter (51). In other words, this dust collector (10) For example, even if the filter is used as a dust collection filter (51) compared to a high-performance filter such as HEPA, fine suspended particles (10 μm in diameter from the gas to be treated) (10

0) can be removed. Therefore, according to the present invention, the fine floating particles (100) can be removed from the gas to be treated, and the pressure loss of the gas to be treated is low, thereby realizing the dust collector (10).

Furthermore, in the present invention, the dust collection filter (51) and the aggregated particles (101) are removed by the purification mechanism (60). Here, the agglomerated part (70) aggregates the suspended particles (100) once trapped, and again scatters them as force-aggregated particles (101) into the gas to be treated. For this reason, suspended particles (100) and aggregated particles (101) will not continue to accumulate in the aggregated part (70). Aggregated particles (101) scattered from the agglomerated part (70) are collected by the dust collection filter (51). The aggregated particles (101) are collected from the dust collection filter (51) by the purification mechanism (60). Since it is removed, the aggregated particles (101) do not continue to accumulate in the dust collection filter (51). Therefore, according to the present invention, it is not necessary for the user to clean the agglomeration part (70) and the dust collection filter (51), and the labor required for the maintenance work of the dust collector (10) can be reduced.

[0032] In the second invention, the particle charging unit (71) and the particle capturing unit (74) are provided in the aggregation unit (70), and the suspended particles (100) charged by the particle charging unit (71) are provided. It is trapped in the particle trapping part (74) by electric 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 collecting device (10) while keeping the pressure loss of the gas to be treated low.

[0033] In the third, fourth and fifth inventions, the force of the dust collecting filter (51) is also aggregated by bringing the scraping member (61, 65, 66) into contact with the moving dust collecting filter (51). Remove particles (101). Therefore, according to these inventions, the dust collecting filter (5

It is possible to perform the purification process 1) reliably.

[0034] In the sixth aspect of the invention, collection of particles upstream and downstream of the aggregating portion (70) is performed by one dust collecting filter (51). Therefore, according to the present invention, the configuration of the dust collector (10) can be simplified.

[0035] In the seventh invention, the purification mechanism (60) is provided with the nozzle connection portion (63). For this reason, The agglomerated particles (101) removed from the dust collection filter (51) can be reliably discharged by a vacuum cleaner. In the present invention, the dust collection filter (51) is moved by the driving force generated by the power generation mechanism (55) using the suction force of the cleaner. This eliminates the need for a power source such as a motor to move the dust collection filter (51), simplifies the configuration of the dust collector (10), and reduces the energy required to operate the dust collector (10). Can be reduced.

[0036] In the eighth aspect of the invention, the aggregated particles (101) are collected near the nozzle connecting portion (63) by the conveying member (57). Accordingly, the agglomerated particles (101) from which the dust collecting filter (51) force has also been removed can be surely sucked out by the cleaner connected to the nozzle connecting portion (63). The conveying member (57) of the present invention conveys the aggregated particles (101) using the power generated by the power generation mechanism (55) using the suction force of the cleaner. Therefore, according to the present invention, a power source such as a motor for driving the conveying member (57) becomes unnecessary, and the energy required for the dust collector (10) to be complicated and the dust collector (10) to operate. Can be avoided.

[0037] In the ninth aspect of the invention, the holding container (62) of the purification mechanism (60) is detachable. For this reason, the work of discarding the aggregated particles (101) accumulated in the holding container (62) becomes easy, and the labor required for the maintenance work of the dust collector (10) can be reduced.

[0038] According to the tenth aspect of the present invention, the aggregated particles in the holding container (62) can be obtained simply by connecting the suction nozzle (68) of the vacuum cleaner to the nozzle connection portion (63) of the holding container (62). (101) can be discharged. Therefore, according to the present invention, it becomes easy to discard the aggregated particles (101) accumulated in the holding container (62), and the labor required for maintenance work of the dust collector (10) can be reduced.

[0039] In the eleventh aspect of the invention, the dust collector (10) according to the present invention is provided in the air conditioner. Therefore, not only indoor temperature control but also air purification can be performed, and indoor comfort can be improved.

Brief Description of Drawings

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. [5] FIG. 5 is an enlarged view of an essential part schematically showing the operation of the aggregation 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] 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 is a schematic configuration diagram showing a main part of an air cleaner according to a sixth modification of the other embodiment.

FIG. 24 is a schematic side view showing the internal structure of the indoor unit in the seventh modification example of the other embodiment.

Explanation of symbols

20 casing

23 Air passage (gas passage)

26 Indoor heat exchanger (heat exchanger)

51 Dust collection filter

55 Power generation mechanism

56 Drive mechanism

61 Scraper brush (scraper)

62 Storage case (holding container)

63 Nozzle connection

65 Rotating brush (scraper)

66 Scraper pad (scraper)

70 Aggregation unit (aggregation part)

71 Particle charging unit

74 Particle trap

100 airborne particles

101 Agglomerated particles

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1 of the Invention]

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. <Overall configuration of air cleaner>

As shown in FIG. 1, the air cleaner (10) of the first embodiment includes a box-shaped casing (20). In the 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. Inside the casing (20), there is formed an air passage (23) leading to the suction port (21) and the force outlet (22). The air passage (23) constitutes a gas passage for circulating the air to be treated as the gas to be treated.

[0045] In the air passage (23) in the casing (20), in order from the suction port (21) to the blowout port (22), the prefilter unit (30) and the aggregation unit ( 70), a collecting unit (50) as a collecting unit, and a fan (25) are installed.

[0046] 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.

[0047] The agglomeration unit (70) includes suspended particles remaining in the air to be treated that have passed through the prefilter (31)

(100) is once captured and aggregated, and the aggregated particles (101) obtained thereby are scattered again into the air to be treated. Details of the aggregation unit (70) will be described later.

[0048] 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 into a thin and flexible endless sheet, and is provided so as to cross the air passage (23). The coarseness of the dust collection filter (51) is, for example, the same 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.

[0049] 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.

[0050] <Pre-filter unit, collection unit>

The pre-filter unit (30) and the collection unit (50) are different in terms of whether they have a force dust filter (51) equipped with a pre-filter (31). .

[0051] As described above, 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).

[0052] As shown in FIG. 2, in each of the prefilter unit (30) and the collection unit (50), 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)! /

[0053] The second roller (33, 53) is rotated at one end of the second roller (33, 53) in each of the prefilter unit (30) and the collection unit (50). The motors (34, 54) are connected. When the second roller (33, 53) is driven by the motor (34, 54), the filter (31, 51) circulates between the first roller (32, 52) and the second roller (33, 53). In this way, 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)!

[0054] In the pre-filter unit (30), the first purification unit (40) is arranged immediately below the second roller (33). In the collecting unit (50), 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 the target to be purified. Dust collection filter (51) Forces that are different in terms of whether they are otherwise configured in the same way.

[0055] As shown in FIG. 3, 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). The brush (41, 61) is arranged upward so as to contact the outer surface of the part of the filter (31, 51) wound around the second roller (33, 53). A scraping member for scraping dust and the like from the filter (31, 51) is configured. 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).

[0056] In the first purification unit (40) and the second purification unit (60), 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). That is, when the suction nozzle (68) is inserted into the nozzle connection part (43, 63), 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.

[0057] <Aggregating unit>

As shown in FIG. 4, the aggregation unit (70) includes a particle charging section (71) and a particle trapping section (74), and constitutes an aggregation section.

[0058] 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. In the particle charging part (71), the ion wire (72) and the counter electrode (7 A DC voltage is applied between the two and 3), and suspended particles (100) in the air to be treated that pass between the ion wires (72) and the counter electrode are positively (+) charged.

[0059] The particle trapping portion (74) is for temporarily trapping and aggregating the floating particles (100) charged by the particle charging portion (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.

[0060] Both the dust collection electrode (75) and the counter electrode (76) are formed in an elongated flat plate shape extending in a direction perpendicular to the paper surface of FIG. The dust collection electrode (75) and the counter electrode (76) are approximately the same size. In the particle trapping part (74), 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.

[0061] The material of the dust collection electrode (75) and the counter electrode (76) is V, and the deviation is slightly conductive resin. Dust collecting electrode

As 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 Ω'cm or more and less than ΙΟ ^ Ω'cm.

[0062] 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).

[0063] The surface of the dust collection electrode (75) is subjected to a surface treatment for promoting the separation of the aggregated particles (101). Examples of 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. In addition, 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. A composition having a high boiling point higher than the boiling point of the organic solvent by 5 ° C. or more and a ratio of the hydrophilic material Z hydrophobic polymer of 1Z99 to 50Z50 (mass% ratio). [0064] Driving operation

The operation of the air cleaner (10) will be explained.

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.

[0066] The air to be processed that has passed through the prefilter (31) then flows into the aggregating 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). While the air to be treated that has passed through the prefilter (31) passes through the particle charging unit (71), 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 μm or less, such as those contained in tobacco smoke.

[0067] The air to be treated that has passed through the particle charging unit (71) then flows into the particle trapping unit (74).

The air to be treated that has flowed into the particle trapping part (74) flows through the air flow path (77), which is a space between the dust collecting electrode (75) and the counter electrode (76). As described above, since 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.

[0068] On the surface of the dust collection electrode (75), the adhering suspended particles (100) aggregate together to form aggregated particles (101) having a large particle size. When the aggregated particles (101) formed on the surface of the dust collection electrode (75) reach a certain size, the dust collection electrode (75) force is also peeled off and scattered. This point will be described with reference to FIG.

[0069] As described above, suspended particles (100) charged positively (+) by the particle charging unit (71) on the surface of the dust collection electrode (75) are electrically attracted (ie, Coulomb force). It is attracted and attached. As shown in Fig. 5 (a), when suspended particles (100) adhere to the dust collection electrode (75), 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). [0070] As a result, on the surface of the dust collecting electrode (75), as shown in Fig. 5 (b) and Fig. 5 (c), it flew later in the vicinity of the first attached suspended particles (100). The suspended particles (100) adhere intensively and the aggregated particles (101) formed by the aggregation of the suspended particles (100) with each other gradually grow. Since each suspended particle (100) is very fine, they are firmly united with each other by van der Waals force (intermolecular force). Aggregated particles (101) grown to a certain particle size (for example, about 10 m to about LOO / zm), as shown in FIG. 5 (d), are collected from the air to be treated flowing through the air flow path (77). It is peeled off from the dust collection electrode (75) under the force and scattered with the air to be treated to the downstream side.

[0071] 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 containing 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).

[0072] The pre-filter unit (30) performs the pre-filter (31) cleaning operation, and the collection unit (50) performs the dust-collecting filter (51) cleaning operation. These cleaning operations are performed, for example, every time the operating time of the air cleaner (10) reaches a predetermined reference value. Note that 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.

In the cleaning operation of the pre-filter unit (30), the second roller (33) is driven by the motor (34), and the pre-filter (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).

On the other hand, in the cleaning operation of the collection unit (50), the second roller (53) is driven by the motor (54), and the dust collection filter (51) moves. The moving dust collection filter (51) Rub with the scrub brush (61) of the second cleansing unit (60). 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.

[0075] In these purification units (40, 60), when the suction nozzle (68) of the vacuum cleaner is inserted into the nozzle connection (43, 63) of the storage case (42, 62), the nozzle connection The internal space of the storage case (4 2, 62) communicates with the suction nozzle (68) of the vacuum cleaner via (43, 63). When the vacuum cleaner is operated in this state, dust and agglomerated particles (101) accumulated in the storage case (42, 62) are sucked into and discharged from the storage case (42, 62) vacuum cleaner.

[0076] Effect of Embodiment 1

In the air cleaner (10) of the present embodiment, 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). In the air cleaner (10) of the present embodiment, for example, fine suspended particles (100) having a particle size of 1 μm 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). In other words, in this air cleaner (10), fine suspended particles with a particle size of 1 μm 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.

[0077] In the air cleaner (10) of the present embodiment, 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.

[0078] In the air cleaner (10) of the present embodiment, in order to promote the separation of the aggregated particles (101). Since the surface treatment is applied to the surface of the dust collection electrode (75), the aggregated particles (101) are easily peeled off from the dust collection electrode (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. .

[0079] In the air cleaner (10) of the present embodiment, the first purification unit (60) also removes the agglomerated particles (101) by the dust collection filter (51) force. Here, the aggregation unit (70) aggregates the suspended particles (100) once trapped, and then again scatters them 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). On the other hand, 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). 51), 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.

[0080] Further, in the air cleaner (10) of the present embodiment, 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. .

[0081] As described above, the aggregation unit (70) of the present embodiment includes the particle charging unit (71) and the particle capturing unit.

(74), and has the same structure as a general electric dust collector. However, in 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. (101) Dust collecting electrode (75) The force is peeled off and scattered. In other words, in this particle trapping part (74), it is not necessary to keep the suspended particles (100) on the dust collecting electrode (75) like a general electric dust collector. It is sufficient if it can be retained. For this reason, 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) is It can be made smaller than an electrostatic precipitator with equivalent performance.

Variation 1 of Embodiment 1

In the aggregation unit (70) of the present embodiment, as shown in FIG. 6, 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. Anyway.

[0083] When a projection (78) is formed on the surface of the dust collection electrode (75), an electric field is concentrated near the projection (78), and suspended particles (100) are concentrated on the projection (78). Adhere to. Therefore, compared to the case where airborne particles (100) are deposited on the surface of the dust collection electrode (75) on average, 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.

[0084] Modification 2 of Embodiment 1—

In the aggregation unit (70) of the present embodiment, 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.

In this modification, as shown in FIG. 7, the cross-sectional shape of the dust collection electrode (75) is changed from a rectangular shape to a trapezoidal shape. Specifically, 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. . As a result, 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. .

[0086] In the particle trapping part (74) of the aggregation unit (70), when the cross-sectional area of the air channel (77) gradually narrows toward the downstream side of the air to be treated, 77) The flow velocity of the air to be processed gradually increases as it goes downstream. For this reason, the force that the agglomerated particles (101) on the dust collecting electrode (75) are subjected to the air pressure to be treated increases toward the downstream side of the air to be treated, and the dust collecting electrode (75) force agglomerated particles (101) are likely to peel off . Therefore, according to this modification The agglomerated particles (101) formed in the particle trapping part (74) can be surely peeled off from the agglomerated electrode and collected by the dust collecting filter (51), and the suspended particles in the air cleaner (10) The collection efficiency of (100) can be improved.

[0087] In the aggregation unit (70) of this modification, 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. For example, changing the shape of the counter electrode (76), changing the shape of both the dust collection electrode (75) and the counter electrode (76), and the shape of the dust collection electrode (75) and the counter electrode (76) The cross-sectional area of the air flow path (77) may be changed by changing their arrangement without changing.

[Embodiment 2 of the Invention]

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. Here, the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.

As shown in FIG. 8, 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).

[0090] 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)! . Further, although not shown, a motor for rotating the rollers (84, 85) is attached to each roller (84, 85).

[0091] 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. In addition, 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. In the portion of the shielding sheet (81) where the ventilation portions (82) and the shielding portions (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.

[0093] In the shielding unit (80), only the ventilation portion (82) of the shielding sheet (81) is formed by rotating the rollers (84, 85) to move the shielding sheet (81). The first state (the state shown in Fig. 8 (A)) where the covered part covers the front surface of the particle trapping part (74) and the ventilation part (82) and the shielding part (83) of the shielding sheet (81) are alternately The formed portion switches to the second state (the state shown in FIG. 8 (B)) covering the front surface of the particle trapping portion (74).

[0094] Driving action

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 aggregation operation is an operation for forming the aggregated particles (101) by the particle trapping part (74) of the aggregation unit (70). During the agglomeration operation, 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.

[0096] In this state, 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 an average over the entire surface. 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). In 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.

[0097] The scattering operation is an operation for peeling the aggregated particles (101) from the dust collecting electrode (75) and scattering them again into the air to be treated. During the scattering operation, 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. At that time, 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). [0098] In the particle trapping part (74) in this state, most of the air flow path (77) and the counter electrode (76) are covered by the shielding part (83) of the shielding sheet (81). Then, the air to be treated that has passed through the ventilation portion (82) of the shielding sheet (81) flows intensively near the surface of the dust collection electrode (75). In the particle trapping part (74), the flow velocity of the air to be treated near the surface of the dust collecting electrode (75) increases compared to that during the agglomeration operation. Therefore, during the scattering operation, the force that the aggregated particles (101) on the dust collection electrode (75) receives the flow force of the air to be treated increases, and the aggregated particles (101) also peel off the dust collection electrode (75) force. It becomes easy. Aggregated particles (101) peeled off from the dust collection electrode (75) are captured by the dust collection filter (51) of the collection unit (50).

[0099] As described above, when the shielding unit (80) of the present embodiment is set to the second state, the particle capturing unit (

In 74), the flow velocity of the air to be treated in the vicinity of the dust collecting electrode (75) increases locally. In other words, 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.

[0100] Effect of Embodiment 2

In the air cleaner (10) of the present embodiment, 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.

[0101] Modification 1 of Embodiment 2

In the air cleaner (10) of the present embodiment, 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.

[0102] As shown in FIG. 9, the particle trapping part (74) of the present modification includes each dust collecting electrode (75) and each 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 in a substantially horizontal posture (the posture shown by the two-dot chain line in FIG. 9) and a posture inclined by the direct force toward the downstream side of the flow of the air to be treated (same figure). And the posture indicated by the solid line in FIG.

[0103] In this variation, in the particle trapping part (74) during the agglomeration operation, the dust collecting electrode (75) and the counter electrode (76) are generally horizontal (the posture shown 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”. On the other hand, in the particle trapping part (74) during the scattering operation, 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”. That is, 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). .

Modification 2 of Embodiment 2—

In the air cleaner (10) of the present embodiment, the aggregation operation and the scattering operation may be switched by changing the flow rate of the air to be treated. Specifically, in the scattering operation of this modification, 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). As the flow rate of the air to be treated increases, 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).

[0105] Modification 3 of Embodiment 2—

In the air cleaner (10) of the present embodiment, the operation of vibrating the aggregation unit (70) may be performed as a scattering operation.

As shown in FIG. 10, the air cleaner (10) of this 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). [0107] The vibration unit (90) is installed at a position where the outer peripheral surface of the vibration disk (92) contacts the aggregation unit (70). In the vibration unit (90), 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. When 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. As a result, the dust collection electrode (75) of the particle trapping part (74) also vibrates, and the aggregated particles (101) are easily separated from the dust collection electrode (75).

[0108] Modification 4 of Embodiment 2

In the air cleaner (10) of this embodiment, 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.

In this variation, in the particle trapping part (74) during the agglomeration operation, as shown in FIG. 11 (a), the counter electrode (76) is connected to the positive electrode (+ electrode) of the power source (79), The dust collection electrode (75) is connected to the negative electrode (-) of the power supply (79). In this state, floating particles (100) charged positively (+) by the particle charging unit (71) are attracted to and attached to the dust collection electrode (75), and the floating particles attached to the dust collection electrode (75). (100) are aggregated together to form aggregated particles (101).

[0110] When the suspended particles (100) adhere to the dust collection electrode (75), the suspended particles (100) have previously held V and the electric charge escapes to the dust collection electrode (75). The potential is equal to the potential of the dust collection electrode (75) (in this case 0 (zero) volts). However, the electrical conductivity of the suspended particles (100) themselves is often not so high, so the charge of the suspended particles (100) adhering to the suspended particles (100) adhering to the dust collecting electrode (75) is immediately increased. Does not escape to the dust collection electrode (75). Therefore, when the aggregated particles (101) are larger than a certain size, the aggregated particles (101) are left with a positive (+) charge.

On the other hand, in the particle trapping part (74) during the scattering operation, as shown in FIG. 11 (b), the dust collecting electrode (75) is connected to the positive electrode (+ electrode) of the power supply (79), (76) is connected to the negative electrode (one pole) of the power supply (79). As described above, the aggregated particles (101) on the dust collection electrode (75) are positively (+) charged. For this reason, when 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.

[0112] In this modification, the operation of switching the connection state between the dust collection electrode (75) and the counter electrode (76) and the power source (79) may be performed using a mechanical or electrical switch. Alternatively, the AC voltage may be temporarily applied to the dust collection electrode (75) and the counter electrode (76).

[0113] 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. When 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). To do. The agglomerated particles (101) are peeled off by the impact of the dust collecting electrode (75) and scattered into the air to be treated.

<o

<< Embodiment 3 of the Invention >>

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. Here, the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.

[0115] As shown in FIG. 12, in the air cleaner (10) of the present 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.

[0116] In each of the pre-filter unit (30) and the collection unit (50), one end of the filter (31, 51) is fixed to the first roller (32, 52) and the other of the filter (31, 51). The end is fixed to the second roller (33, 53). In each of the pre-filter unit (30) and the collection unit (50), both the first roller (32, 52) and the second roller (33, 53) are driven by motors not shown. . When the first roller (32, 52) is rotated and the filter (31, 51) is wound around the first roller (32, 52), the filter (31, 51) moves upward. On the other hand, when the filter (31, 51) is wound around the second roller (33, 53) by rotating the second roller (33, 53), the filter (31, 51) moves downward.

[0117] When the prefilter (31) is moved by the prefilter unit (30), it is attached to the prefilter (31). The attached dust is removed by the scraping brush (41) of the first cleaning unit (40). When the dust collection filter (51) is moved by the collection unit (50), the aggregated particles (101) attached to the dust collection filter (51) are removed by the scrub brush of the second purification unit (60). Defeated by (61).

[Embodiment 4 of the Invention]

Embodiment 4 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. Here, the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.

As shown in FIG. 13, in the air cleaner (10) of the present embodiment, one filter sheet (58) serves as both the pre-filter (31) and the dust collection filter (51)! / The 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! In the filter sheet (58), 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).

[0120] In the air cleaner (10) of the present embodiment, the first purification unit (40) and the second purification unit

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).

[0121] In the air cleaner (10) of the present embodiment, only one of the four rollers (32, 33, 52, 53) is rotationally driven by the motor. When any of the rollers (32, 33, 52, 53) is rotated, the filter sheet (58) moves while being guided by the rollers (32, 33, 52, 53). The

[0122] On the upstream side of the aggregation unit (70) in the air passage (23), dust or the like in the air to be treated is captured on the outer surface of the filter sheet (58). Dust adhering to the outer surface of the filter sheet (58) is scraped off by the scraping brush (41) of the first cleaning unit (40). On the other hand, on the downstream side of the aggregation unit (70) in the air passage (23), the aggregated particles (101) in the air to be treated are captured by the inner surface of the filter sheet (58). Aggregated particles (101) adhering to the inner surface of the filter sheet (58) are scraped off by the scraping brush (61) of the second cleaning unit (60).

<< Embodiment 5 of the Invention >>

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. Here, the air cleaner (10) of the present embodiment will be described with respect to differences from the first embodiment.

As shown in FIG. 14, in the prefilter unit (30) and the collection unit (50) of the present 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.

[0125] Power generation mechanism (35) of prefilter unit (30) and power generation mechanism of collection unit (50)

(55) all have the same structure. Specifically, 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.

[0126] When the vacuum cleaner suction nozzle (68) is connected to the purification unit (40, 60), the rotation generated by the power generation mechanism (3, 55) using the vacuum cleaner suction force The second roller (33, 53) is driven by the power. When the second roller (33,53) rotates and the filter (31,51) moves, the filter (31 , 51) dust and agglomerated particles (101) are scraped off by the scraping brush (41, 61). Dust and agglomerated particles (101) removed from the filter (31, 51) are sucked into the suction nozzle (68) of the vacuum cleaner connected to the nozzle connecting portion (43, 63).

[0127] Effect of Embodiment 5

In the first purification unit (40) and the second purification unit (60) of this embodiment, 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) 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). .

[0128] Modification of Embodiment 5

In the air cleaner (10) of the present embodiment, as shown in FIG. 15, 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). ) To the vicinity of the nozzle connection (43, 63). Dust and agglomerated particles (101) carried to the vicinity of the nozzle connection (43, 63) are sucked into and out of the vacuum suction I nozzle (68) of the vacuum cleaner inserted into the nozzle connection (43, 63). It is.

[0129] In the first purification unit (40) and the second purification unit (60) of the present modification, dust and agglomerated particles (101) are removed from the nozzle connecting portion (43, 57) by the conveying member (37, 57). Gather it near 63). Therefore, the dust and the aggregated particles (101) removed from the filter (31, 51) can be surely sucked out by the cleaner connected to the nozzle connecting portion (43, 63). In addition, 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.

[0130] << Other Embodiments >> First modification

In the aggregation unit (70) of each of the above embodiments, 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. For example, as shown in FIG. 16, 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. In this case, each section of the dust collecting electrode (75) in which the counter electrode (76) is inserted 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).

[0131] Second modification

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). Although provided, the filter (31, 51) force is not limited to the scraping brush (41, 61) as a member for removing the agglomerated particles (101).

[0132] For example, a round bar-shaped rotary brush (65) as shown in Fig. 17 is provided in the purification unit (40, 60), and the rotary brush (65) is rotated simultaneously with the movement of the filter (31, 51). By doing so, dust or agglomerated particles (101) may be removed from the filter (31, 51). Also, 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)! /.

[0133] Third modification

In the purification units (40, 60) of the above embodiments, 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)! ,.

As shown in FIG. 19, in the purification unit (40, 60) of the present modification, 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). . When the suction nozzle (68) of the vacuum cleaner is connected to the nozzle connection part (43,63) of the storage case (42,62), air flows from the open end of the suction part (67) into the storage case (42,62). Sucked Then, dust and agglomerated particles (101) are peeled off from the filter (31, 51) by the air flow generated at that time.

[0135] Fourth modification

In the purification units (40, 60) of the above embodiments, as shown in FIG. 20, the housing case (42, 62) may be detachable. The storage cases (42, 62) of this modification form a holding container. In the present modification, the nozzle connection portion (43, 63) is omitted from the storage case (42, 62) as the storage case (42, 62) is detachable. Also in this modification, 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.

[0136] Fifth Modification

In the pre-filter unit (30) and the collection unit (50) of each of the embodiments described above, as shown in FIG. 21, the filter (31, 51) may be reciprocated up and down. In this case, the drive mechanism (36, 56) is configured to reciprocate the filter (31, 51) linearly. Although not shown, 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.

[0137] In this variation, 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.

In these purification units (40, 60), the scraping brush (41, 61) is installed so as to face the front surface of the filter (31, 51).

[0138] Sixth Modification

In the collection unit (50) of each of the embodiments described above, the aggregated particles (101) are collected using the dust collection filter (51). However, the collection unit (50) It is not limited to using (51).

[0139] For example, as shown in Fig. 22, the collection unit (50) may be configured to separate the air to be treated and the aggregated particles (101) using a cyclone (95). In Cyclone (95) The air to be treated containing the agglomerated particles (101) swirls, and the agglomerated particles (101) are collected in the vicinity of 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).

Further, as shown in FIG. 23, the collection unit (50) may be configured to separate the aggregated particles (101) from the air to be treated using gravity. In this case, the collection unit (50) is constituted by a duct (96) installed on the downstream side of the aggregation unit (70). The duct (96) has a shape in which the cross-sectional area is abruptly narrowed at a position advanced downstream from the collection unit (50) by a predetermined distance. 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). On the other hand, in the upper part in the duct (96), the aggregated particles (101) contained in the air to be treated are reduced. Then, 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.

[0141] 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! /.

[0142] Seventh modification

In each of the above embodiments, the air cleaner (10) is configured by the dust collector according to the present invention. However, the dust collector according to the present invention may be incorporated in the air conditioner.

As shown in FIG. 24, in this modification, the dust collector according to the present invention is incorporated in the indoor unit (15) of the air conditioner. The 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. In the casing (20) of the indoor unit (15), 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 exchange is provided downstream of the dust collector composed of the pre-filter unit (30), the aggregation unit (70), and the collection unit (50). (26) is arranged. In the indoor heat exchange (26), heat is exchanged between the refrigerant circulating between the outdoor unit (not shown) and the air to be treated.

[0144] Eighth Modification

In each of the above embodiments, 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. For example, combustion exhaust gas from a boiler or the like may be treated, and fine dust contained in the combustion gas may be collected by a dust collector.

[0145] It should be noted that the above embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, applications thereof, or uses thereof.

Industrial applicability

[0146] As described above, the present invention is useful for a dust collector for removing suspended particles (100) from air, combustion exhaust gas, or the like.

Claims

The scope of the claims

[1] Arranged in the gas passage (23) through which the gas to be treated flows, aggregates suspended particles (100) in the gas to be treated to form aggregated particles (101), and forms the aggregated particles (101) to be treated. Agglomeration part (70) to be scattered in the processing gas;

A dust collection filter (51) that is disposed downstream of the aggregation portion (70) in the gas passage (23) and collects the aggregated particles (101) in the gas to be treated that has passed through the aggregation portion (70);

And a purification mechanism (60) for removing the aggregated particles (101) from the dust collection filter (51) and purifying the dust collection filter (51).

A dust collector characterized by that.

[2] In claim 1,

The agglomeration part (70) includes a particle charging part (71) for charging the suspended particles (100) in the gas to be treated and an electric attractive force for the suspended particles (100) charged by the particle charging part (71). With a particle trap (74) that traps and aggregates with

A dust collector characterized by that.

[3] In claim 1 or 2,

The purification mechanism (60) is installed in contact with the drive mechanism (56) that moves the dust collection filter (51) and the dust collection filter (51) that is driven and moved by the drive mechanism (56). And a scraping member (61, 65, 66) for scraping the condensed particles from the dust collecting filter (51).

A dust collector characterized by that.

[4] In claim 3,

The drive mechanism (56) is configured to reciprocate the dust collection filter (51).

[5] In claim 3,

The dust collection filter (51) is formed in an endless sheet shape,

The drive mechanism (56) is configured to move the dust collection filter (51) in one direction.

A dust collector characterized by that.

[6] In claim 5,

The dust collection filter (51) is disposed over the upstream side of the agglomeration part (70) in the gas passage (23), and suspended particles in the gas to be treated flowing into the agglomeration part (70). Part of the child (100) is collected at a portion located upstream of the agglomeration part (70), and the agglomerated particles (101) in the gas to be treated that have passed through the agglomeration part (70) are collected in the agglomeration part ( 70) is configured to collect at the portion located downstream of

A dust collector characterized by that.

[7] In claim 3,

The purification mechanism (60) includes a nozzle connection (63) to which a vacuum cleaner is connected to suck out the aggregated particles (101) removed from the dust collection filter (51).

The drive mechanism (56) generates a driving force for driving the dust collection filter (51) by using a suction force of a vacuum cleaner connected to the nozzle connection part (63) ( 5 5)

A dust collector characterized by that.

[8] In claim 7,

The purification mechanism (60) uses the driving force generated by the power generation mechanism (55) to remove the aggregated particles (101) removed from the dust collection filter (51) to the nozzle connection (63). Equipped with a transport member (57) for transport

A dust collector characterized by that.

[9] In claim 1 or 2,

The purification mechanism (60) includes a removable holding container (62) configured to hold the aggregated particles (101) removed from the dust collection filter (51)!

A dust collector characterized by that.

[10] In claim 1 or 2,

The purification mechanism (60) includes a holding container (62) that holds the aggregated particles (101) removed from the dust collection filter (51),

The holding container (62) is provided with a nozzle connection part (63) to which a suction nozzle (68) of a vacuum cleaner is connected in order to suck out the aggregated particles (101) to be held. A dust collector characterized by that.

A dust collector;

A casing (20) that forms a gas passage (23) in which air as a gas to be treated flows and in which the dust collector is installed;

The gas passage (23) is provided downstream of the dust collector and includes heat exchange (26) for exchanging heat between the air flowing through the gas passage (23) and the refrigerant,

The dust collector is

An agglomeration part that aggregates suspended particles (100) in the gas to be treated flowing through the gas passage (23) to form aggregated particles (101) and scatters the formed aggregated particles (101) into the gas to be treated. (70)

And a purification mechanism (60) for removing the agglomerated particles (101) from the dust collection filter (51) and purifying the dust collection filter (51).

An air conditioner characterized by that.