JP5071352B2 - Dust collector - Google Patents

Dust collector Download PDF

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JP5071352B2
JP5071352B2 JP2008295301A JP2008295301A JP5071352B2 JP 5071352 B2 JP5071352 B2 JP 5071352B2 JP 2008295301 A JP2008295301 A JP 2008295301A JP 2008295301 A JP2008295301 A JP 2008295301A JP 5071352 B2 JP5071352 B2 JP 5071352B2
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electrode
frame
base
dust
dust collection
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JP2010119950A (en
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完治 茂木
竜司 秋山
俊治 春名
利夫 田中
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Daikin Industries Ltd
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Description

本発明は、格子構造の電極を有して、被処理空気中の塵埃を捕集する集塵装置に関するものである。   The present invention relates to a dust collector that has an electrode having a lattice structure and collects dust in air to be treated.

従来より、被処理空気中の塵埃を捕集する集塵装置が知られている。この種の集塵装置として、特許文献1には、格子構造の2つの電極を用いた集塵装置が開示されている。   2. Description of the Related Art Conventionally, a dust collector that collects dust in air to be treated is known. As a dust collector of this type, Patent Document 1 discloses a dust collector using two electrodes having a lattice structure.

この集塵装置は、第1電極と第2電極と両電極に電圧を印加する電源とを備えている。第1電極と第2電極とは、概ね同様の構造となっている。具体的には、これらの電極は、複数の通気孔を有する格子構造の基台部と、該基台部から通気孔の軸方向に突出する突起部とを有している。突起部は、各通気孔の側縁部に形成されている。集塵装置では、第1電極の突起部が第2電極の通気孔に挿通され、且つ第2電極の突起部が第1電極の通気孔に挿通されるように、両者の電極が対向して配置されている。   The dust collector includes a first electrode, a second electrode, and a power source that applies a voltage to both electrodes. The first electrode and the second electrode have substantially the same structure. Specifically, these electrodes include a base portion having a lattice structure having a plurality of air holes, and a protrusion protruding from the base portion in the axial direction of the air holes. The protrusion is formed on the side edge of each vent hole. In the dust collector, both the electrodes face each other so that the protrusion of the first electrode is inserted into the vent hole of the second electrode and the protrusion of the second electrode is inserted into the vent hole of the first electrode. Is arranged.

両者の電極に電圧が印加されると、第1電極と第2電極との間に電界が形成され、第1電極の表面に被処理空気中の塵埃を捕集する集塵面が形成される。具体的には、第1電極の通気孔の内周面と第2電極の突起部との間に電界が形成されることで、上記第1電極の通気孔の内周面に集塵面が形成される。また、第1電極の突起部と第2電極の通気孔の内周面との間に電界が形成されることで、上記第1電極の突起部の外周面に集塵面が形成される。被処理空気中の塵埃は、これらの集塵面に誘引されて捕集される。その結果、被処理空気の清浄化が図られる。
特開2008−18425号公報
When a voltage is applied to both electrodes, 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. . Specifically, an electric field is formed between the inner peripheral surface of the vent 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 vent hole of the first electrode. It is formed. Further, an electric field is formed between the protrusion of the first electrode and the inner peripheral surface of the vent 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.
JP 2008-18425 A

上述したような集塵装置では、被処理空気が流れる空気通路に上記の格子構造の電極を配置する必要がある。ここで、例えば格子構造の電極をケーシングに直接固定するようにすると、ケーシングとの間での絶縁の確保が困難となる。また、ケーシングの内壁に所定の取付板等を取り付け、格子構造の電極の通気孔の軸方向の端部を取付板に固定することも考えられる。しかしながら、この場合には、取付板と格子構造の電極とが、軸方向に重なって配設されるため、集塵装置が空気流れ方向に大きくなってしまうという問題が生じる。   In the dust collector as described above, it is necessary to dispose the electrodes having the lattice structure in the air passage through which the air to be treated flows. Here, for example, if an electrode having a lattice structure is directly fixed to the casing, it is difficult to ensure insulation with the casing. It is also conceivable to attach a predetermined mounting plate or the like to the inner wall of the casing, and fix the axial end of the ventilation hole of the grid structure electrode to the mounting plate. However, in this case, since the mounting plate and the grid-structured electrode are disposed so as to overlap in the axial direction, there arises a problem that the dust collector becomes large in the air flow direction.

本発明は、かかる点に鑑みてなされたものであり、その目的は、格子構造の電極をケーシング内の空気通路に確実に保持でき、且つ格子構造の電極の通気孔の軸方向における大型化を回避できる集塵装置を提案することである。   The present invention has been made in view of such a point, and an object of the present invention is to reliably hold the grid-structured electrode in the air passage in the casing and to increase the size of the vent hole of the grid-structured electrode in the axial direction. It is to propose a dust collector that can be avoided.

第1の発明は、複数の通気孔(46)が開口する格子構造の基台部(41)を有する第1電極(40)と、該第1電極(40)の通気孔(46)に挿通される複数の突起部(52)を有する第2電極(50)とを備え、上記第1電極(40)と第2電極(50)との間に被処理空気中の塵埃を捕集するための電界を形成する集塵装置を対象とし、上記被処理空気が流れる空気通路(23)を形成するケーシング(20)に固定されると共に、上記第1電極(40)の基台部(41)を内部に支持する枠部材(70)を更に備え、上記第1電極(40)の基台部(41)における通気孔(46)の軸方向端部には、上記枠部材(70)の内縁部(71a,72c)が嵌り込むように該基台部(41)の外縁を内方へ縮小させた切除部(61a,61b,63)が形成され、上記枠部材(70)は、上記ケーシング(20)に取り付けられる枠状の取付枠部(71)と、上記該取付枠部(71)に取り付けられる枠状の押え枠部(72)とを有し、上記取付枠部(71)と押え枠部(72)との間に第1電極(40)の基台部(41)を挟み込んで支持するように構成され、上記第1電極(40)の基台部(41)における上記取付枠部(71)側の端部には、該取付枠部(71)の内縁部(71a)が嵌り込むように、上記切除部(63)が形成され、上記切除部は、上記基台部(41)の軸方向の端面側に近づくに連れて該基台部(41)の外縁を内方へ縮小するような傾斜部(63)を構成しており、上記取付枠部(71)の内縁部(71a)は、上記傾斜部(63)に対応して、上記基台部(41)の端面側に近づくに連れて開口を小さくするような拡大傾斜部(73)を構成していることを特徴とする。 In the first invention, the first electrode (40) having a base part (41) having a lattice structure in which a plurality of vent holes (46) are opened, and the vent hole (46) of the first electrode (40) are inserted. A second electrode (50) having a plurality of protrusions (52) to collect dust in the air to be treated between the first electrode (40) and the second electrode (50) Intended for a dust collector that forms an electric field, and is fixed to a casing (20) that forms an air passage (23) through which the air to be treated flows, and a base (41) of the first electrode (40) And a frame member (70) for supporting the inside of the frame member (70) at the axial end of the vent hole (46) in the base portion (41) of the first electrode (40). A cut-out part (61a, 61b, 63) is formed by reducing the outer edge of the base part (41) inward so that the part (71a, 72c) is fitted , and the frame member (70) is formed of the casing Installed on (20) A frame-like attachment frame portion (71) and a frame-like presser frame portion (72) attached to the attachment frame portion (71). The attachment frame portion (71) and the presser frame portion (72 ) With the base portion (41) of the first electrode (40) sandwiched between and supporting the mounting frame portion (71) of the base portion (41) of the first electrode (40). The cut-out part (63) is formed at the end on the side so that the inner edge part (71a) of the mounting frame part (71) is fitted, and the cut-out part is a shaft of the base part (41). An inclined part (63) is formed so that the outer edge of the base part (41) shrinks inward as it approaches the end face side in the direction, and the inner edge part (71a) of the mounting frame part (71) Corresponds to the inclined portion (63), and constitutes an enlarged inclined portion (73) that reduces the opening as it approaches the end face side of the base portion (41). .

第1の発明では、第1電極(40)の基台部(41)の通気孔(46)の内部に第2電極(50)の突起部(52)が挿通される。この集塵装置では、第1電極(40)の通気孔(46)の内周面と、第2電極(50)の突起部(52)の外周面との間に電界が形成される。被処理空気が基台部(41)の通気孔(46)を通過すると、帯電した塵埃が基台部(41)の通気孔(46)の内周面、あるいは突起部(52)の外周面に誘引されて捕集される。   In the first invention, the protrusion (52) of the second electrode (50) is inserted into the vent hole (46) of the base (41) of the first electrode (40). In this dust collector, an electric field is formed between the inner peripheral surface of the vent hole (46) of the first electrode (40) and the outer peripheral surface of the protrusion (52) of the second electrode (50). When the air to be treated passes through the vent hole (46) of the base part (41), the charged dust becomes the inner peripheral surface of the vent hole (46) of the base part (41) or the outer peripheral surface of the projection part (52). Attracted by and collected.

第1電極(40)の基台部(41)は、枠部材(70)の内部に支持される。これにより、ケーシング(20)内の空気通路(23)では、第1電極(40)の基台部(41)が所定位置に保持される。第1電極(40)の基台部(41)における通気孔(46)の軸方向端部には、切除部(61a,61b,63)が形成される。この切除部(61a,61b,63)には、枠部材(70)の内縁部(71a,72c)が嵌り込む。このようにして、切除部(61a,61b,63)に枠部材(70)の内縁部(71a,72c)が嵌り込むと、枠部材(70)の内縁部(71a,72c)が、基台部(41)の端面から更に通気孔(46)の軸方向外側へ突出してしまうことが回避される。   The base part (41) of the first electrode (40) is supported inside the frame member (70). Thereby, in the air passage (23) in the casing (20), the base part (41) of the first electrode (40) is held at a predetermined position. Cut portions (61a, 61b, 63) are formed at axial ends of the vent holes (46) in the base portion (41) of the first electrode (40). The inner edge portions (71a, 72c) of the frame member (70) are fitted into the cut portions (61a, 61b, 63). Thus, when the inner edge portions (71a, 72c) of the frame member (70) are fitted into the cut portions (61a, 61b, 63), the inner edge portions (71a, 72c) of the frame member (70) are Further protruding from the end face of the portion (41) to the outside in the axial direction of the vent hole (46) is avoided.

1及び第2の発明では、ケーシング(20)に取り付けられる取付枠部(71)と、この取付枠部(71)に固定される押え枠部(72)との間に第1電極(40)の基台部(41)が狭持される。これにより、第1電極(40)の基台部(41)が空気通路(23)の所定位置に保持される。基台部(41)では、取付枠部(71)側の端部に切除部(61b,63)が形成され、この切除部(61b,63)に取付枠部(71)の内縁部(71a)が嵌り込む。これにより、取付枠部(71)の内縁部(71a)が、基台部(41)の端面から更に軸方向外側に突出してしまうことが回避される In the first and second inventions, the first electrode (40) is provided between the attachment frame portion (71) attached to the casing (20) and the presser frame portion (72) fixed to the attachment frame portion (71). ) Of the base part (41). Thereby, the base part (41) of the first electrode (40) is held at a predetermined position of the air passage (23). In the base part (41), a cut part (61b, 63) is formed at the end on the mounting frame part (71) side, and an inner edge part (71a) of the mounting frame part (71) is formed on the cut part (61b, 63). ) Is inserted. Thereby, it is avoided that the inner edge part (71a) of a mounting frame part (71) protrudes further to an axial direction outer side from the end surface of a base part (41) .

の発明は、複数の通気孔(46)が開口する格子構造の基台部(41)を有する第1電極(40)と、該第1電極(40)の通気孔(46)に挿通される複数の突起部(52)を有する第2電極(50)とを備え、上記第1電極(40)と第2電極(50)との間に被処理空気中の塵埃を捕集するための電界を形成する集塵装置であって、上記被処理空気が流れる空気通路(23)を形成するケーシング(20)に固定されると共に、上記第1電極(40)の基台部(41)を内部に支持する枠部材(70)を更に備え、上記第1電極(40)の基台部(41)における通気孔(46)の軸方向端部には、上記枠部材(70)の内縁部(71a,72c)が嵌り込むように該基台部(41)の外縁を内方へ縮小させた切除部(61a,61b,63)が形成され、上記枠部材(70)は、上記ケーシング(20)に取り付けられる枠状の取付枠部(71)と、上記該取付枠部(71)に取り付けられる枠状の押え枠部(72)とを有し、上記取付枠部(71)と押え枠部(72)との間に第1電極(40)の基台部(41)を挟み込んで支持するように構成され、上記第1電極(40)の基台部(41)における上記取付枠部(71)側の端部には、該取付枠部(71)の内縁部(71a)が嵌り込むように、上記切除部(61b,63)が形成され、上記第1電極(40)の基台部(41)における上記押え枠部(72)側の端部にも、該押え枠部(72)の内縁部(72c)が嵌り込むように、上記切除部(61b,63)が形成され、上記取付板部(71)側の切除部は、上記基台部(41)の軸方向の端面側に近づくに連れて該基台部(41)の外縁を内方へ縮小するような傾斜部(63)を構成しており、上記取付枠部(71)の内縁部(71a)は、上記傾斜部(63)に対応して、上記基台部(41)の端面側に近づくに連れて開口を小さくするような拡大傾斜部(73)を構成していることを特徴とする。 In the second invention, the first electrode (40) having a base part (41) having a lattice structure in which a plurality of vent holes (46) are opened , and the vent hole (46) of the first electrode (40) are inserted. A second electrode (50) having a plurality of protrusions (52) to collect dust in the air to be treated between the first electrode (40) and the second electrode (50) A dust collector for forming an electric field of the first electrode (40) fixed to a casing (20) forming an air passage (23) through which the air to be treated flows, and a base (41) of the first electrode (40) And a frame member (70) for supporting the inside of the frame member (70) at the axial end of the vent hole (46) in the base portion (41) of the first electrode (40). A cut-out part (61a, 61b, 63) is formed by reducing the outer edge of the base part (41) inward so that the part (71a, 72c) is fitted, and the frame member (70) is formed of the casing Attach to (20) A frame-shaped attachment frame portion (71) and a frame-shaped presser frame portion (72) attached to the attachment frame portion (71). The attachment frame portion (71) and the presser frame portion (72 ) With the base portion (41) of the first electrode (40) sandwiched between and supporting the mounting frame portion (71) of the base portion (41) of the first electrode (40). The cut portion (61b, 63) is formed at the end on the side so that the inner edge portion (71a) of the mounting frame portion (71) is fitted, and the base portion of the first electrode (40) ( 41), the cutout part (61b, 63) is formed at the end of the presser frame part (72) side so that the inner edge part (72c) of the presser frame part (72) is fitted , and the attachment The cut portion on the side of the plate portion (71) is an inclined portion (63 that reduces the outer edge of the base portion (41) inward as it approaches the end face side in the axial direction of the base portion (41). ) And the inner edge (71) of the mounting frame (71) a) constitutes an enlarged inclined portion (73) corresponding to the inclined portion (63) so that the opening becomes smaller as it approaches the end face side of the base portion (41). And

の発明では、基台部(41)における軸方向の両端部にそれぞれ切除部(61a,61b,63)が形成される。そして、基台部(41)では、一方の切除部(61b,63)に取付枠部(71)の内縁部(71a)が嵌り込み、他方の切除部(61a)に押え枠部(72)の内縁部(72c)が嵌り込む。これにより、基台部(41)の端面から取付枠部(71)の内縁部(71a)が突出してしまうことが回避され、且つ基台部(41)の端面から押え枠部(72)の内縁部(72c)が突出してしまうことも回避される。 In the second invention, cut portions (61a, 61b, 63) are formed at both ends of the base portion (41) in the axial direction. In the base portion (41), the inner edge portion (71a) of the mounting frame portion (71) is fitted into one cut portion (61b, 63), and the presser frame portion (72) is fitted to the other cut portion (61a). The inner edge part (72c) of the is fitted. Thereby, it is avoided that the inner edge part (71a) of the mounting frame part (71) protrudes from the end surface of the base part (41), and the presser frame part (72) of the presser frame part (72) extends from the end surface of the base part (41). It is also avoided that the inner edge (72c) protrudes.

1及び第2の発明では、基台部(41)の切除部が傾斜部(63)を構成し、取付枠部(71)の内縁部(71a)には、この傾斜部(63)に対応するように拡大傾斜部(73)が形成される。ここで、例えば取付枠部(71)の温度が変化すると、取付枠部(71)は、その内部の開口を縮小させるように、該開口の軸心側に向かって膨張/収縮することがある。これにより、取付枠部(71)の拡大傾斜部(73)が軸心側に変位し、この拡大傾斜部(73)が基台部(41)の傾斜部(63)を押し付ける。その結果、基台部(41)は、傾斜部(63)に沿うようにして軸方向へ変位する。従って、取付枠部(71)が熱の影響によって径方向内側に伸長/収縮しても、基台部(41)の径方向の変位が抑制される In the first and second inventions, the cut portion of the base portion (41) constitutes the inclined portion (63), and the inner edge portion (71a) of the mounting frame portion (71) is connected to the inclined portion (63). An enlarged inclined portion (73) is formed so as to correspond. Here, for example, when the temperature of the attachment frame portion (71) changes, the attachment frame portion (71) may expand / contract toward the axial center side of the opening so as to reduce the opening inside the attachment frame portion (71). . Thereby, the expansion inclination part (73) of a mounting frame part (71) displaces to an axial center side, and this expansion inclination part (73) presses the inclination part (63) of a base part (41). As a result, the base portion (41) is displaced in the axial direction along the inclined portion (63). Therefore, even if the attachment frame portion (71) extends / shrinks radially inward due to the influence of heat, the radial displacement of the base portion (41) is suppressed .

の発明は、第1又は第2の発明において、上記第1電極(40)は金属材料で構成され、上記枠部材(70)は樹脂材料で構成されていることを特徴とする。 According to a third invention, in the first or second invention, the first electrode (40) is made of a metal material, and the frame member (70) is made of a resin material.

の発明では、金属材料から成る第1電極(40)の基台部(41)が、樹脂材料から成る枠部材(70)の内部に支持される。 In 3rd invention, the base part (41) of the 1st electrode (40) which consists of metal materials is supported inside the frame member (70) which consists of resin materials.

本発明では、第1電極(40)の基台部(41)を枠部材(70)の内部に支持しているので、ケーシング(20)内の空気通路に第1電極(40)を確実に保持できる。また、第1電極(40)の基台部(41)の端部において、枠部材(70)の内縁部(71a,72c)が嵌り込むように基台部(41)の外縁を縮小させる切除部(61a,61b,)を形成している。このため、枠部材(70)の内縁部(71a,72c)が、基台部(41)の端面よりも外側へ突出してしまうことが回避される。その結果、この集塵装置が、基台部(41)の通気孔(46)における軸方向に大きくなってしまうことを防止でき、集塵装置の薄型化を図ることができる。   In the present invention, since the base part (41) of the first electrode (40) is supported inside the frame member (70), the first electrode (40) can be securely attached to the air passage in the casing (20). Can hold. In addition, at the end of the base part (41) of the first electrode (40), the outer edge of the base part (41) is reduced so that the inner edge parts (71a, 72c) of the frame member (70) are fitted. Part (61a, 61b,) is formed. For this reason, it is avoided that the inner edge part (71a, 72c) of a frame member (70) protrudes outside rather than the end surface of a base part (41). As a result, this dust collector can be prevented from becoming larger in the axial direction in the vent hole (46) of the base portion (41), and the dust collector can be made thinner.

第1の発明では、取付枠部(71)の内縁部(71a)を、基台部(41)の切除部(61b,63)に嵌め込むようにしている。このため、取付枠部(71)が基台部(41)の端面よりも軸方向外側へ突出してしまうことが回避される。また、取付枠部(71)の内縁部(71a)を切除部(71a,72c)に嵌め込むことで、取付枠部(71)に対して基台部(41)の位置決めを確実に行うことができる。従って、このような位置決めを行った後に、取付枠部(71)に押え枠部(72)を固定することで、第1電極(40)の位置決めの精度を向上できる。 In the first invention, the inner edge portion (71a) of the mounting frame portion (71) is fitted into the cut portions (61b, 63) of the base portion (41). For this reason, it is avoided that an attachment frame part (71) protrudes to an axial direction outer side rather than the end surface of a base part (41). Also, by positioning the inner edge part (71a) of the mounting frame part (71) in the cutout part (71a, 72c), the positioning of the base part (41) with respect to the mounting frame part (71) is ensured. Can do. Therefore, the positioning accuracy of the first electrode (40) can be improved by fixing the presser frame part (72) to the attachment frame part (71) after performing such positioning.

の発明では、基台部(41)の一方の端部に取付枠部(71)の内縁部(71a)が嵌り込む切除部(61b,63)を形成し、他方の端部に押え枠部(72)の内縁部(72c)が嵌り込む切除部(61a)を形成している。その結果、取付枠部(71)と押え枠部(72)との双方を切除部(61a,61b,63)に納めることができ、集塵装置の薄型化を更に図ることができる。 In the second aspect of the present invention, a cut-out portion (61b, 63) into which the inner edge portion (71a) of the mounting frame portion (71) is fitted is formed at one end portion of the base portion (41), and a presser foot is formed at the other end portion. A cutout part (61a) into which the inner edge part (72c) of the frame part (72) is fitted is formed. As a result, both the attachment frame portion (71) and the presser frame portion (72) can be accommodated in the cut portions (61a, 61b, 63), and the dust collector can be further reduced in thickness.

1及び第2の発明では、基台部(41)の切除部として傾斜部(63)を形成し、取付枠部(71)の内縁部(71a)には、傾斜部(63)に対応する拡大傾斜部(73)を形成している。このため、取付枠部(71)が熱の影響によって径方向内側に伸長/収縮した場合にも、基台部(41)を傾斜部(63)に沿うようにして開口方向へ変位させることができる。これにより、取付枠部(71)の熱による膨張/収縮に伴い、取付枠部(71)や基台部(41)に作用する応力を軽減でき、取付枠部(71)や基台部(41)の変形/破損を防止できる。 In the first and second inventions, the inclined portion (63) is formed as the cut portion of the base portion (41), and the inner edge portion (71a) of the mounting frame portion (71) corresponds to the inclined portion (63). An enlarged inclined portion (73) is formed. For this reason, even when the attachment frame portion (71) extends / shrinks radially inward due to the influence of heat, the base portion (41) can be displaced in the opening direction along the inclined portion (63). it can. As a result, the stress acting on the mounting frame part (71) and the base part (41) can be reduced as the mounting frame part (71) expands / contracts due to heat, and the mounting frame part (71) and the base part ( 41) deformation / breakage can be prevented.

また、このようにすると、基台部(41)が径方向へ変位してしまうことを抑制できるので、第2電極(50)の突起部(52)と、第1電極(40)の通気孔(46)内壁との間の距離が変化してしまうことも防止できる。その結果、突起部(52)の外周面と通気孔(46)内壁との間で所望とする電界を形成することができ、集塵性能の安定化を図ることができる Moreover, since it can suppress that a base part (41) displaces to radial direction in this way, the projection part (52) of a 2nd electrode (50) and the ventilation hole of a 1st electrode (40) (46) It is possible to prevent the distance from the inner wall from changing. As a result, a desired electric field can be formed between the outer peripheral surface of the protrusion (52) and the inner wall of the vent hole (46), and the dust collection performance can be stabilized .

の発明では、枠部材(70)を樹脂材料としている。ここで、枠部材(70)を樹脂材料で構成すると、例えば枠部材を金属材料で構成した場合と比較して、枠部材の厚みが大きくなる。しかしながら、本発明では、この枠部材(70)の内縁部(71a,72c)を切除部(61a,61b,63)に納めるようにしたので、集塵装置の厚みが大きくなってしまうこともない。 In the third invention, the frame member (70) is a resin material. Here, when the frame member (70) is made of a resin material, for example, the thickness of the frame member is larger than when the frame member is made of a metal material. However, in the present invention, since the inner edge portions (71a, 72c) of the frame member (70) are accommodated in the cut portions (61a, 61b, 63), the thickness of the dust collector does not increase. .

また、枠部材(70)を樹脂材料で構成して第1電極(40)を金属材料で構成した場合、枠部材(70)の方が第1電極(40)よりも熱によって膨張/収縮し易くなる。このため、例えば集塵装置の周囲温度が変化した場合、枠部材(70)によって第1電極(40)の基台部(41)が径方向に押し付けられ易くなる。しかしながら、上記の第4の発明のようにすることで、取付枠部(71)や基台部(41)の変形/破損を防止でき、且つ基台部(41)の径方向の変位を防止して集塵性能を維持できる。   Further, when the frame member (70) is made of a resin material and the first electrode (40) is made of a metal material, the frame member (70) expands / shrinks by heat than the first electrode (40). It becomes easy. For this reason, for example, when the ambient temperature of the dust collector changes, the base part (41) of the first electrode (40) is easily pressed in the radial direction by the frame member (70). However, according to the fourth aspect of the invention, the mounting frame (71) and the base (41) can be prevented from being deformed / damaged, and the base (41) can be prevented from being displaced in the radial direction. And dust collection performance can be maintained.

以下、本発明の実施形態を図面に基づいて詳細に説明する。なお、以下の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

参考態》
本発明の前提となる参考態の空気清浄機(10)は、一般家庭や小規模店舗などで用いられる民生用の空気浄化装置であって、本発明に係る集塵装置を構成している。
"Reference-type state"
Premise become a reference type state of the air cleaner of the present invention (10) is an air purification device for consumer used in such homes and small stores, constitutes a dust collector according to the present invention .

〈空気清浄機の全体構成〉
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。
<Overall configuration of the air purifier>
As shown in FIGS. 1 and 2, 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.

上記ケーシング(20)は、例えば、矩形状の横長の容器に形成され、前面が空気の吸込口(21)に形成され、背面が空気の吹出口(22)に形成され、内部が空気通路(23)に形成されている。そして、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)とが吸込口(21)から吹出口(22)に向かって順に配置されている。   The casing (20) is formed in, for example, a rectangular horizontally long container, the front surface is formed in an air inlet (21), the back surface is formed in an air outlet (22), and the inside is an air passage ( 23) is 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.

上記プレフィルタ(11)は、吸込口(21)からケーシング(20)内に吸込まれた空気に含まれる比較的大きな塵埃を捕集するためのフィルタを構成している。   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).

上記荷電部(12)は、イオン化部を構成し、プレフィルタ(11)を通過した比較的小さな塵埃を帯電させるものである。この荷電部(12)は、図示しないが、例えば、複数のイオン化線と、複数の対向電極から構成され、該イオン化線と対向電極との間に直流電圧が印加されるように構成されている。イオン化線は、荷電部(12)の上端から下端に亘って設けられ、対向電極はイオン化線の間に配置されている。荷電部(12)では、被処理空気中の塵埃が正の電荷に帯電される。   The charging unit (12) forms an ionization unit and charges relatively small dust that has passed through the prefilter (11). Although not shown, 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.

上記集塵部(30)は、荷電部(12)で帯電した塵埃を吸着して捕集するものである。この集塵部(30)の詳細については後述する。   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.

上記触媒フィルタ(13)は、図示しないが、例えばハニカム構造の基材の表面に触媒が担持されて構成されている。その触媒としては、例えば、マンガン系触媒や貴金属触媒などが用いられ、集塵部(30)を通過して塵埃が除去された空気中の有害成分や臭気成分を分解する。   Although not shown, the catalyst filter (13) is configured, for example, by supporting a catalyst on the surface of a substrate having a honeycomb structure. As the 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).

上記送風機(14)は、ケーシング(20)内の空気通路(23)において最下流側に配置されている。この送風機(14)は、室内空気をケーシング(20)内に吸い込み、清浄空気を室内に吹き出すためのものである。   The blower (14) is disposed 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.

〈集塵部の構成〉
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。なお、第1電極を高圧電極(50)とし、第2電極を集塵電極(40)としても良い。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。
<Configuration of the dust collector>
The detailed structure of the said dust collection part (30) is demonstrated referring FIGS. 3-5. 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 first electrode may be a high voltage electrode (50) and the second electrode may be a dust collection electrode (40). 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. Specifically, 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).

集塵電極(40)は、金属材料で構成されており、詳細には導電性のステンレスバネ鋼製の薄板金属によって構成されている。一方、高圧電極(50)は、導電性の樹脂材料で構成されている。高圧電極(50)は、射出成形等によって一体的に形成されている。また、高圧電極(50)の材質は、微導電性樹脂であることが好ましく、特に体積抵抗率が10Ωcm以上1013Ωcm以下の樹脂であることが好ましい。 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. On the other hand, 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 Ωcm or more and 10 13 Ωcm or less.

集塵電極(40)と高圧電極(50)とは、互いに類似した形状をしており、一部が相互に挿入自在な差し込み構造に構成されている(図3を参照)。また、集塵電極(40)は、空気通路(23)における空気流れの上流側寄りに配置され、高圧電極(50)は、空気通路(23)における空気流れの下流側寄りに配置されている。   The dust collection electrode (40) and the high voltage electrode (50) have similar shapes to each other, and a part of the dust collection electrode (40) and the high voltage electrode (50) are configured to be 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). .

集塵電極(40)は、集塵側基台部(41)と集塵側突起板(42)とを備えている。更に集塵側基台部(41)は、複数の縦仕切板(44)と複数の横仕切板(45)とを備えている。   The dust collection electrode (40) includes a dust collection side base (41) and a dust collection side projection plate (42). Further, the dust collection side base part (41) includes a plurality of vertical partition plates (44) and a plurality of horizontal partition plates (45).

縦仕切板(44)及び横仕切板(45)は、それぞれ板状に形成されており、それぞれが所定の間隔を介して互いに平行に配列されている。縦仕切板(44)及び横仕切板(45)には、集塵側基台部(41)の厚さ方向(図3における上下の方向)にそれぞれスリットが形成されている。集塵側基台部(41)では、縦仕切板(44)と横仕切板(45)とが互いに直交するように、両者の仕切部(44,45)が相対するスリットに嵌合して格子構造が構成されている。なお、集塵側基台部(41)の厚さ方向に延びるスリットは、縦仕切板(44)と横仕切板(45)とのいずれか一方のみに形成しても良いし、両方に形成しても良い。   The vertical partition plate (44) and the horizontal partition plate (45) are each formed in a plate shape, and are arranged in parallel with each other at a predetermined interval. In the vertical partition plate (44) and the horizontal partition plate (45), slits are respectively formed in the thickness direction (up and down direction in FIG. 3) of the dust collection side base portion (41). In the dust collection side base (41), the partition (44, 45) of both is fitted into the opposing slit so that the vertical partition (44) and the horizontal partition (45) are orthogonal to each other. A lattice structure is constructed. In addition, the slit extending in the thickness direction of the dust collecting side base (41) may be formed in only one of the vertical partition plate (44) and the horizontal partition plate (45), or formed in both. You may do it.

以上のようにして、集塵側基台部(41)は、複数の縦仕切板(44)と複数の横仕切板(45)とが互いに直交するように組み合わされて四角格子構造の基台部を構成している。そして、集塵側基台部(41)では、縦仕切板(44)と横仕切板(45)とによって長方形状の複数の通気孔(46)が区画されている。   As described above, the dust collection side base (41) is a base having a square lattice structure in which a plurality of vertical partition plates (44) and a plurality of horizontal partition plates (45) are combined so as to be orthogonal to each other. Part. In the dust collection side base portion (41), a plurality of rectangular ventilation holes (46) are partitioned by the vertical partition plate (44) and the horizontal partition plate (45).

集塵電極(40)の各通気孔(46)のアスペクト比は、2.0以上4.0以下となっている。ここで、アスペクト比は、通気孔(46)の縦方向の長さをaとし、この通気孔(46)の横方向の長さをbとした場合に、bに対するaの比率(a/b)を表すものである(図4を参照)。   The aspect ratio of each vent hole (46) of the dust collection electrode (40) is 2.0 or more and 4.0 or less. Here, the aspect ratio is the ratio of a to b (a / b) where a is the longitudinal length of the vent hole (46) and b is the lateral length of the vent hole (46). ) (See FIG. 4).

上記複数の集塵側突起板(42)は、上記集塵側基台部(41)の縦仕切板(44)の幅方向(通気孔(46)の軸方向)の端部に形成されている。即ち、集塵側突起板(42)は、集塵側基台部(41)から通気孔(46)の軸方向に突出する突起部を構成している。縦仕切板(44)と集塵側突起板(42)とは、一体的な一枚の金属板を構成している。   The plurality of dust collection side projection plates (42) are formed at the end of the vertical partition plate (44) of the dust collection side base (41) in the width direction (axial direction of the vent hole (46)). Yes. That is, the dust collection side projection plate (42) constitutes a projection that protrudes from the dust collection side base portion (41) in the axial direction of the vent hole (46). The vertical partition plate (44) and the dust collection side projection plate (42) constitute a single metal plate.

集塵側突起板(42)は、集塵側基台部(41)の複数の通気孔(46)に跨るように格子線上に延びる長板状に形成されている。つまり、集塵側突起板(42)は、同列上で互いに隣接する複数の通気孔(46)に沿うようにして、縦仕切板(44)の長手方向に延びる略長板状に形成されている。本参考の集塵側突起板(42)は、3つの通気孔(46)に跨る長板状に形成されている。また、本参考では、1枚の縦仕切板(44)に3つの集塵側突起板(42)が並設されている(図3を参照)。 The dust collection side projection plate (42) is formed in a long plate shape extending on the lattice line so as to straddle the plurality of ventilation holes (46) of the dust collection side base portion (41). In other words, the dust collecting side projection plate (42) is formed in a substantially long plate shape extending in the longitudinal direction of the vertical partition plate (44) so as to be along the plurality of adjacent ventilation holes (46) in the same row. Yes. Dust collecting-side protruding plates of the reference type condition (42) is formed in a long plate shape extending over three vent holes (46). Further, in the present reference shaped state, three dust-collecting-side protruding plate vertical partition of one (44) (42) are juxtaposed (see Figure 3).

高圧電極(50)は、高圧側基台部(51)と高圧側突起板(52)とを備えている。更に高圧側基台部(51)は、枠部(53)と複数の縦仕切板(54)と複数の横仕切板(55)とを備えている。また、集塵部(30)では、集塵側基台部(41)が高圧側基台部(51)よりも空気通路(23)の空気流れの上流側に配置されている。   The high voltage electrode (50) includes a high voltage side base (51) and a high voltage side protrusion plate (52). Furthermore, the high-pressure side base part (51) includes a frame part (53), a plurality of vertical partition plates (54), and a plurality of horizontal partition plates (55). Moreover, in the dust collection part (30), the dust collection side base part (41) is arrange | positioned in the upstream of the air flow of an air passage (23) rather than the high voltage | pressure side base part (51).

枠部(53)は、矩形状に形成されており、その内部に上記縦仕切板(54)及び横仕切板(55)を一体的に支持されている。縦仕切板(54)及び横仕切板(55)は、それぞれ板状に形成されており、それぞれが所定の間隔を介して互いに平行に配列されている。なお、高圧側基台部(51)の縦仕切板(54)及び横仕切板(55)の板厚は、集塵側基台部(41)の縦仕切板(44)及び横仕切板(45)の板厚よりも大きくなっている。また、高圧側基台部(51)において、縦仕切板(54)同士の間隔は横仕切板(55)同士の間隔よりも狭くなっている。   The frame portion (53) is formed in a rectangular shape, and the vertical partition plate (54) and the horizontal partition plate (55) are integrally supported therein. The vertical partition plate (54) and the horizontal partition plate (55) are each formed in a plate shape, and are arranged in parallel with each other at a predetermined interval. The thickness of the vertical partition plate (54) and the horizontal partition plate (55) of the high pressure side base portion (51) is the same as the vertical partition plate (44) and the horizontal partition plate (41) of the dust collection side base portion (41). It is larger than the plate thickness of 45). Moreover, in the high voltage | pressure side base part (51), the space | interval of vertical partition plates (54) is narrower than the space | interval of horizontal partition plates (55).

高圧側基台部(51)は、複数の縦仕切板(54)と複数の横仕切板(55)とが互いに直交するように組み合わされて四角格子構造の基台部を構成している。そして、高圧側基台部(51)では、縦仕切板(54)と横仕切板(55)とによって複数の通気孔(56)が区画されている。   The high-pressure side base part (51) forms a base part of a square lattice structure by combining a plurality of vertical partition plates (54) and a plurality of horizontal partition plates (55) so as to be orthogonal to each other. And in the high voltage | pressure side base part (51), the several ventilation hole (56) is divided by the vertical partition plate (54) and the horizontal partition plate (55).

高圧電極(50)の通気孔(56)は、集塵側突起板(42)に相対するように該集塵側突起板(42)の延伸方向に延びる長穴状に形成されている。つまり、高圧電極(50)の通気孔(56)は、集塵電極(40)の3つの通気孔(46,46,46)に概ね対応するように、縦仕切板(54)の長手方向に延びる縦長の長方形状をしている。   The vent hole (56) of the high-voltage electrode (50) is formed in a long hole shape extending in the extending direction of the dust collection side projection plate (42) so as to face the dust collection side projection plate (42). That is, the vent hole (56) of the high-voltage electrode (50) extends in the longitudinal direction of the vertical partition plate (54) so as to substantially correspond to the three vent holes (46, 46, 46) of the dust collecting electrode (40). It has a vertically long rectangular shape.

高圧電極(50)の各通気孔(56)のアスペクト比は、集塵電極(40)の通気孔(46)のアスペクト比よりも大きくなっている。本参考では、高圧電極(50)の各通気孔(56)のアスペクト比が、集塵電極(40)の通気孔(46)のアスペクト比の概ね3倍となっている。 The aspect ratio of each vent hole (56) of the high voltage electrode (50) is larger than the aspect ratio of the vent hole (46) of the dust collecting electrode (40). In this reference type condition, the aspect ratio of each vent the high-voltage electrode (50) (56), has a roughly 3 times the aspect ratio of the vent holes (46) of the dust collecting electrode (40).

上記複数の高圧側突起板(52)は、高圧側基台部(51)の縦仕切板(54)の幅方向(通気孔(56)の軸方向)の端部に形成されている。即ち、高圧側突起板(52)は、高圧側基台部(51)から通気孔(56)の軸方向に突出する突起部を構成している。高圧側突起板(52)の幅方向(縦仕切板(54)の長手方向)の長さは、集塵側突起板(42)の幅方向(縦仕切板(44)の長手方向)の長さよりも短くなっている。そして、高圧側基台部(51)における縦仕切板(54)では、1つの通気孔(56)に沿った長辺側の縁部(54a)に、複数の高圧側突起板(52)が通気孔(56)の長手方向に並設されている。具体的には、高圧電極(50)では、1つの通気孔(56)に沿って3つの高圧側突起板(52)が所定の間隔を介して配列されており、各高圧側突起板(52)が集塵電極(40)の各通気孔(46)と1対1の関係で相対している。   The plurality of high-pressure side protruding plates (52) are formed at the end of the vertical partition plate (54) of the high-pressure side base portion (51) in the width direction (the axial direction of the vent hole (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 vent hole (56). The length in the width direction of the high-pressure projection plate (52) (longitudinal direction of the vertical partition plate (54)) is the length of the dust collection projection plate (42) in the width direction (longitudinal direction of the vertical partition plate (44)). It is shorter than that. In the vertical partition plate (54) in the high pressure side base (51), a plurality of high pressure side projection plates (52) are formed on the long side edge (54a) along one vent hole (56). The air holes (56) are juxtaposed in the longitudinal direction. Specifically, in the high voltage electrode (50), three high voltage side projection plates (52) are arranged at a predetermined interval along one vent hole (56), and each high voltage side projection plate (52 ) Are opposed to each ventilation hole (46) of the dust collecting electrode (40) in a one-to-one relationship.

図5に示すように、集塵電極(40)と高圧電極(50)とを組み合わせた状態とすると、各集塵側突起板(42)が高圧電極(50)の各通気孔(56)に挿通し、且つ高圧側突起板(52)が集塵電極(40)の各通気孔(46)に挿通する。集塵電極(40)と高圧電極(50)とは、集塵側基台部(41)と高圧側基台部(51)とが互いに接触することなく、所定の間隔を介して対向するように配置される。   As shown in FIG. 5, when the dust collecting electrode (40) and the high voltage electrode (50) are combined, each dust collecting side projection plate (42) is inserted into each vent hole (56) of the high voltage electrode (50). The high-pressure-side protruding plate (52) is inserted through each vent 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.

この組み合わせ状態において、高圧電極(50)の各横仕切板(55)は、集塵電極(40)の横仕切板(45)と概ね同一平面上に位置する。また、集塵電極(40)の各縦仕切板(44)と高圧電極(50)の各縦仕切板(54)とは、横仕切板(45,55)の延伸方向において、千鳥状に配列される。これにより、高圧側突起板(52)は、集塵電極(40)の通気孔(46)の幅方向の中央部に位置し、且つ集塵側突起板(42)は、高圧電極(50)の通気孔(56)の幅方向の中央部に位置している。また、高圧側突起板(52)は、集塵電極(40)の通気孔(46)の長手方向の中央部に位置し、且つ集塵側突起板(42)は、高圧電極(50)の通気孔(56)の長手方向の中央部に位置している。そして、集塵側基台部(41)では、通気孔(46)の内周面と高圧側突起板(52)の外周面との間に、被処理空気が流通する矩形筒状の流路が形成される。また、高圧側基台部(51)では、通気孔(56)の内周面と集塵側突起板(42)の外周面との間に、被処理空気が流通する矩形筒状の流路が形成される。なお、本参考では、高圧側突起板(52)の外周面と通気孔(46)の内周面との間の距離は、全周に亘って概ね均一な距離となっている。また、集塵側突起板(42)の外周面と通気孔(56)の内周面との間の距離も、全周に亘って概ね均一な距離となっている。 In this combined state, each horizontal partition plate (55) of the high-voltage electrode (50) is positioned substantially on the same plane as the horizontal partition plate (45) of the dust collection electrode (40). In addition, the vertical partition plates (44) of the dust collection electrode (40) and the vertical partition plates (54) of the high-voltage electrode (50) are arranged in a staggered manner in the extending direction of the horizontal partition plates (45, 55). Is done. Accordingly, the high-pressure side protruding plate (52) is positioned at the center in the width direction of the vent hole (46) of the dust collecting electrode (40), and the dust collecting side protruding plate (42) is positioned at the high voltage electrode (50). The vent hole (56) is located at the center in the width direction. The high-pressure-side protruding plate (52) is located at the center in the longitudinal direction of the ventilation hole (46) 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 vent hole (56). And in the dust collection side base part (41), the rectangular cylindrical flow path through which the to-be-processed air distribute | circulates between the inner peripheral surface of a vent hole (46) and the outer peripheral surface of a high voltage | pressure side projection board (52). Is formed. In addition, in the high-pressure side base (51), a rectangular cylindrical flow path through which air to be treated flows is provided between the inner peripheral surface of the vent hole (56) and the outer peripheral surface of the dust collecting side projection plate (42). Is formed. In this reference type state, the distance between the outer surface and the inner circumferential surface of the vent hole (46) of the high pressure side projection plate (52) has a substantially uniform distance along the entire circumference. Further, the distance between the outer peripheral surface of the dust collecting projection plate (42) and the inner peripheral surface of the vent hole (56) is also a substantially uniform distance over the entire periphery.

以上のような構成の集塵部(30)において、集塵電極(40)と高圧電極(50)とに電位差が付与されると、集塵電極(40)と高圧電極(50)との間に電界が形成され、集塵電極(40)の表面に被処理空気中の塵埃を捕集する集塵面が形成される。   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).

具体的には、集塵側基台部(41)においては、通気孔(46)の内周面と高圧側突起板(52)の外周面との間の流路に、横断面視で放射状の電界が形成される。これにより、通気孔(46)の内周面には、プラスに帯電した塵埃を捕集するための集塵面(48,48,48,48)が形成される。また、高圧側基台部(51)においては、集塵側突起板(42)の外周面と通気孔(56)の内周面との間の流路に、横断面視で放射状の電界が形成される。これにより、集塵側突起板(42)の外周面には、プラスに帯電した塵埃を捕集するための集塵面(58,58,58,58)が形成される。   Specifically, in the dust collection side base (41), the flow path between the inner peripheral surface of the vent hole (46) and the outer peripheral surface of the high pressure side projection plate (52) is radial in a cross-sectional view. Is formed. As a result, dust collecting surfaces (48, 48, 48, 48) for collecting positively charged dust are formed on the inner peripheral surface of the vent hole (46). In addition, in the high-pressure side base (51), a radial electric field is seen in a cross-sectional view in the flow path between the outer peripheral surface of the dust collecting side projection plate (42) and the inner peripheral surface of the vent hole (56). It is formed. As a result, 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).

〈集塵部の取付構造〉
上記の集塵部(30)では、集塵電極(40)及び高圧電極(50)がケーシング(20)に固定されて空気通路(23)に保持されている。このような集塵部(30)の取付構造について説明する。
<Dust collection part mounting structure>
In the dust collection part (30), the dust collection electrode (40) and the high voltage electrode (50) are fixed to the casing (20) and held in the air passage (23). The attachment structure of such a dust collection part (30) is demonstrated.

図3に示すように、集塵側基台部(41)の外周縁部では、縦仕切板(44)及び横仕切板(45)の長手方向の端部が、外周側へ突出して突出端部(44a,45a)を構成している。即ち、集塵側基台部(41)では、最も端の縦仕切板(44)から外方へ突出する複数の縦突出端部(44a)が形成され、最も端の横仕切板(45)から外方へ突出する複数の横突出端部(45a)が形成されている。   As shown in FIG. 3, at the outer peripheral edge of the dust collection side base (41), the longitudinal end portions of the vertical partition plate (44) and the horizontal partition plate (45) protrude toward the outer peripheral side and protrude from the end. Part (44a, 45a). That is, in the dust collection side base part (41), a plurality of vertically projecting end parts (44a) projecting outward from the endmost vertical partition (44) are formed, and the endmost horizontal partition (45) A plurality of laterally projecting end portions (45a) projecting outward from the base plate are formed.

更に詳細には、図6に示すように、各縦仕切板(44)では、長手方向の両側の側端について、集塵側基台部(41)における通気孔(46)の軸方向両端に段部(61a,61b)が形成されている。即ち、各縦仕切板(44)では、高圧電極(50)側の端部に第1段部(61a)が形成され、高圧電極(50)と反対側の端部に第2段部(61b)が形成されている。これらの段部(61a,61b)は、集塵側基台部(41)の外縁に段差を形成しており、両段部(461a,61b)の間に上記縦突出端部(44a)を形成している。   More specifically, as shown in FIG. 6, in each vertical partition plate (44), the side ends on both sides in the longitudinal direction are disposed at both ends in the axial direction of the vent hole (46) in the dust collection side base portion (41). Step portions (61a, 61b) are formed. That is, in each vertical partition plate (44), the first step portion (61a) is formed at the end portion on the high voltage electrode (50) side, and the second step portion (61b) is formed on the end portion opposite to the high voltage electrode (50). ) Is formed. These step portions (61a, 61b) form a step on the outer edge of the dust collection side base portion (41), and the vertical protruding end portion (44a) is located between both step portions (461a, 61b). Forming.

同様にして、図7に示すように、各横仕切板(45)では、長手方向の両側の側端について、集塵側基台部(41)における通気孔(46)の両端に段部(61a,61b)が形成されている。即ち、横仕切板(45)においても、高圧電極(50)側の端部に第1段部(61a)が形成され、高圧電極(50)と反対側の端部に第2段部(61b)が形成されている。これらの段部(61a,61b)は、集塵側基台部(41)の外縁に段差を形成しており、両段部(61a,61b)の間に上記横突出端部(45a)を形成している。以上のようにして、段部(61a,61b)は、集塵側基台部(41)の軸方向端部の外縁(外周縁部)を内方(内周方向)へ縮小させる切除部を構成している。   Similarly, as shown in FIG. 7, in each horizontal partition plate (45), stepped portions (on both sides in the longitudinal direction are provided at both ends of the ventilation hole (46) in the dust collection side base portion (41). 61a, 61b) are formed. That is, also in the horizontal partition plate (45), the first step portion (61a) is formed at the end portion on the high voltage electrode (50) side, and the second step portion (61b) is formed on the end portion opposite to the high voltage electrode (50). ) Is formed. These step portions (61a, 61b) form a step on the outer edge of the dust collecting side base portion (41), and the lateral projecting end portion (45a) is located between both step portions (61a, 61b). Forming. As described above, the stepped portions (61a, 61b) are cut portions that reduce the outer edge (outer peripheral edge portion) of the dust collecting side base portion (41) in the axial direction to the inner side (inner peripheral direction). It is composed.

集塵部(30)は、集塵電極(40)及び高圧電極(50)を支持するための枠部材(70)を備えている。この枠部材(70)は、取付枠部(71)と押え枠部(72)とを有している。取付枠部(71)及び押え枠部(72)は、それぞれ枠体から成りその内部に矩形状の開口が形成されている。そして、枠部材(70)は、取付枠部(71)と押え枠部(72)との間に集塵側基台部(41)を挟み込むことで、集塵側基台部(41)を内部に保持するように構成されている。   The dust collecting part (30) includes a frame member (70) for supporting the dust collecting electrode (40) and the high voltage electrode (50). The frame member (70) has a mounting frame part (71) and a presser frame part (72). Each of the attachment frame portion (71) and the presser frame portion (72) is composed of a frame body, and a rectangular opening is formed therein. The frame member (70) sandwiches the dust collection side base portion (41) between the mounting frame portion (71) and the presser frame portion (72) so that the dust collection side base portion (41) is It is configured to be held inside.

取付枠部(71)は、略平板状に形成されており、その外周側の端部がケーシング(20)の内壁に取り付けられている(図示省略)。取付枠部(71)は、絶縁性の樹脂材料で構成されている。なお、取付枠部(71)には、柱状のスペーサーが高圧電極(50)側に向かって延出して形成されており、このスペーサーの先端部に高圧電極(50)が支持されている。取付枠部(71)の内縁部(71a)は、集塵側基台部(41)の段部(61b)に沿うように形成されている。即ち、取付枠部(71)に対応する段部(61b)は、取付枠部(71)の内縁部(71a)が嵌合するように段差を形成している。   The attachment frame part (71) is formed in a substantially flat plate shape, and the outer peripheral end thereof is attached to the inner wall of the casing (20) (not shown). The mounting frame (71) is made of an insulating resin material. Note that a columnar spacer is formed on the attachment frame portion (71) so as to extend toward the high-voltage electrode (50), and the high-voltage electrode (50) is supported at the tip of the spacer. The inner edge portion (71a) of the mounting frame portion (71) is formed along the step portion (61b) of the dust collection side base portion (41). That is, the step portion (61b) corresponding to the mounting frame portion (71) forms a step so that the inner edge portion (71a) of the mounting frame portion (71) is fitted.

押え枠部(72)は、矩形筒状の胴部(72a)と、この胴部(72a)の一端から径方向外側へ屈曲する固定部(72b)と、胴部(72a)の他端から径方向内側へ屈曲する押え部(72c)とが一体的に構成されている。胴部(72a)は、集塵側基台部(41)の外周縁に沿うように形成されている。固定部(72b)は、締結具等によって取付枠部(71)に固定されるように構成されている。即ち、押え枠部(72)は、取付枠部(71)に着脱自在に取り付け可能となっている。押え部(72c)は、集塵側基台部(41)の段部(61a)に沿うように形成され、押え枠部(72)の内縁部を構成している。即ち、押え枠部(72)に対応する段部(61a)は、押え部(72c)が嵌合するように段差を形成している。また、押え部(72c)は、高圧側基台部(51)に対向するように配置されている。   The presser frame part (72) includes a rectangular cylindrical body part (72a), a fixing part (72b) bent radially outward from one end of the body part (72a), and the other end of the body part (72a). A presser portion (72c) bent inward in the radial direction is integrally formed. The trunk portion (72a) is formed along the outer peripheral edge of the dust collection side base portion (41). The fixing portion (72b) is configured to be fixed to the attachment frame portion (71) by a fastener or the like. That is, the presser frame portion (72) can be detachably attached to the attachment frame portion (71). The presser part (72c) is formed along the step part (61a) of the dust collection side base part (41), and constitutes the inner edge part of the presser frame part (72). That is, the stepped portion (61a) corresponding to the presser frame portion (72) forms a step so that the presser portion (72c) fits. The presser part (72c) is disposed so as to face the high-pressure side base part (51).

以上のような構成の枠部材(70)は、縦仕切板(44)の縦突出端部(44a)と、横仕切板(45)の横突出端部(45a)とを、取付枠部(71)と押え枠部(72)との間に狭持している。これにより、集塵電極(40)は、高圧電極(50)と所定の間隔を介しながら空気通路(23)に保持されている。   The frame member (70) configured as described above has a vertically projecting end portion (44a) of the longitudinal partition plate (44) and a lateral projecting end portion (45a) of the lateral partition plate (45), which are attached to the mounting frame portion ( 71) and the presser frame (72). Thereby, the dust collection electrode (40) is hold | maintained at the air channel | path (23) via the high voltage | pressure electrode (50) and predetermined spacing.

−運転動作−
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。
-Driving action-
Next, the operation of the air cleaner (10) will be described. As shown in FIGS. 1 and 2, when the blower (14) is driven, indoor air that is air to be treated is sucked into the air passage (23) of the casing (20) and flows through the air passage (23). In the air cleaner (10), a DC voltage is applied between the ionization line of the charging part (12) and the counter electrode, and the dust collecting electrode (40) and the high voltage electrode (50) of the dust collecting part (30). A DC voltage is applied between the two.

ケーシング(20)の空気通路(23)に吸引された室内空気は、先ずプレフィルタ(11)を通過する。プレフィルタ(11)は、室内空気に含まれる比較的大きな塵埃を捕集する。プレフィルタ(11)を通過した室内空気は、荷電部(12)に流れる。この荷電部(12)では、プレフィルタ(11)を通過した比較的小さな塵埃がプラスに帯電し、プラスに帯電した塵埃が下流側に流れることになる。   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). In the charging unit (12), relatively small dust that has passed through the prefilter (11) is positively charged, and the positively charged dust flows downstream.

続いて、プラスに帯電した塵埃は、室内空気と共に集塵部(30)を流れる。図5に示すように、集塵部(30)では、先ず、室内空気が集塵側基台部(41)に流入する。集塵側基台部(41)では、室内空気が通気孔(46)を流通する。ここで、集塵側基台部(41)では、通気孔(46)の内周面と高圧側突起板(52)の外周面との間で電界が形成されている。このため、プラスに帯電した塵埃は、通気孔(46)の内周側の集塵面(48)に誘引されて付着していく。その結果、室内空気中の塵埃が除去される。   Subsequently, the positively charged dust flows through the dust collecting section (30) together with the room air. As shown in FIG. 5, in the dust collection part (30), first, room air flows into the dust collection side base part (41). In the dust collection side base portion (41), room air flows through the vent hole (46). Here, in the dust collection side base part (41), an electric field is formed between the inner peripheral surface of the vent hole (46) and the outer peripheral surface of the high-pressure side protruding plate (52). For this reason, the positively charged dust is attracted and attached to the dust collecting surface (48) on the inner peripheral side of the vent hole (46). As a result, dust in the room air is removed.

次いで、集塵側基台部(41)を通過した室内空気は、高圧側基台部(51)に流入する。高圧側基台部(51)では、室内空気が通気孔(56)を流通する。ここで、高圧側基台部(51)では、通気孔(56)の内周面と集塵側突起板(42)の外周面との間で電界が形成されている。このため、室内空気中に残存する塵埃は、集塵側突起板(42)の外周の集塵面(58)に誘引されて付着していく。その結果、室内空気中の塵埃が更に除去される。   Next, the room air that has passed through the dust collection side base (41) flows into the high pressure side base (51). In the high-pressure side base part (51), room air flows through the vent hole (56). Here, in the high-pressure side base portion (51), an electric field is formed between the inner peripheral surface of the vent 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.

集塵部(30)で塵埃が除去された空気は、触媒フィルタ(13)を流れる。触媒フィルタ(13)では、空気中の有害物質や臭気物質が分解/除去される。以上のようにして清浄化された空気は、送風機(14)を通過して、吹出口(22)より室内へ供給される。空気清浄機(10)は、このような動作を行うことで、室内空気を清浄化する。   The air from which dust has been removed by the dust collecting part (30) flows through the catalyst filter (13). In 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.

〈集塵部の取付作業について〉
次に、集塵電極(40)を枠部材(70)に取り付ける作業例について説明する。まず、ケーシング(20)の内壁に、図6及び図7に示す取付枠部(71)を固定する。次いで、取付枠部(71)の内縁部(71a)の内側の開口に、集塵側基台部(41)の端部を内嵌させる。これにより、集塵側基台部(41)は、取付枠部(71)によって位置決めされる。次いで、集塵側基台部(41)の外縁を覆うように押え枠部(72)を被せる。そして、押え部(72c)の内側に集塵側基台部(41)の突出端部(44a,45a)を内嵌させる。この状態で、固定部(72b)を取付枠部(71)に締結することで、枠部材(70)の内部に集塵側基台部(41)が保持される。
<Dust collector installation work>
Next, an operation example for attaching the dust collecting electrode (40) to the frame member (70) will be described. First, the attachment frame portion (71) shown in FIGS. 6 and 7 is fixed to the inner wall of the casing (20). Next, the end portion of the dust collection side base portion (41) is fitted into the opening inside the inner edge portion (71a) of the mounting frame portion (71). Thereby, the dust collection side base part (41) is positioned by the attachment frame part (71). Next, the presser frame portion (72) is covered so as to cover the outer edge of the dust collection side base portion (41). Then, the protruding end portions (44a, 45a) of the dust collection side base portion (41) are fitted inside the presser portion (72c). In this state, the dust collection side base portion (41) is held inside the frame member (70) by fastening the fixing portion (72b) to the attachment frame portion (71).

以上のように、枠部材(70)に集塵側基台部(41)を取り付けた状態では、段部(61b)に取付枠部(71)の内縁部(71a)が嵌り込む。このため、取付枠部(71)が外側(図6及ぶ図7における下側)へ突出してしまうことがない。   As described above, in a state where the dust collection side base portion (41) is attached to the frame member (70), the inner edge portion (71a) of the attachment frame portion (71) is fitted into the step portion (61b). For this reason, the attachment frame portion (71) does not protrude outward (lower side in FIGS. 6 and 7).

即ち、例えば図11に示す比較例の集塵部(100)においては、集塵側基台部(101)に本参考の第2段部(61b)を形成していないので、取付枠部(102)が集塵側基台部(101)よりも軸方向外側(図11における下側)へ突出してしまう。その結果、比較例の集塵部(100)では、その設置スペースが集塵側基台部(101)の厚さ方向に大きくなってしまう。これに対し、本参考の集塵部(30)では、取付枠部(71)を第2段部(61b)の段差に納めることができる。このため、この集塵部(30)では、その設置スペースが集塵側基台部(41)の厚さ方向に大きくなってしまうことが回避される。 That is, for example, in the dust collecting portion (100) of the comparative example shown in FIG. 11, since no form a second stepped portion of the reference type state (61b) in the dust collecting side base portion (101), mounting frame The portion (102) protrudes outward in the axial direction (lower side in FIG. 11) from the dust collection side base portion (101). As a result, in the dust collection part (100) of the comparative example, the installation space becomes large in the thickness direction of the dust collection side base part (101). In contrast, the dust collection unit of the present reference type state (30), it is possible to arrange the mounting frame portion (71) on the step of the second step portion (61b). For this reason, in this dust collection part (30), it is avoided that the installation space becomes large in the thickness direction of a dust collection side base part (41).

同様に、枠部材(70)に集塵側基台部(41)を取り付けた状態では、第1段部(61a)に押え枠部(72)の押え部(72c)が嵌り込む。このため、押え部(72c)が軸方向外側(図6及び図7における上側)へ突出してしまうこともない。   Similarly, in a state where the dust collection side base part (41) is attached to the frame member (70), the presser part (72c) of the presser frame part (72) is fitted into the first step part (61a). For this reason, the presser part (72c) does not protrude outward in the axial direction (upper side in FIGS. 6 and 7).

即ち、例えば図11に示す比較例の集塵部(100)においては、集塵側基台部(101)に本参考の第2段部(61b)を形成していないので、押え枠部(103)の押え部(103c)が集塵側基台部(101)よりも外側(図11における上側)へ突出してしまう。その結果、比較例の集塵部(100)では、その設置スペースが集塵側基台部(101)の厚さ方向に更に大きくなってしまう。これに対し、本参考の集塵部(30)では、押え部(72c)を第1段部(61a)の段差に納めることができる。このため、この集塵部(30)では、その設置スペースが集塵側基台部(41)の厚さ方向に大きくなってしまうことが回避される。 That is, for example, in the dust collecting portion (100) of the comparative example shown in FIG. 11, since no form a second stepped portion of the reference type state (61b) in the dust collecting side base portion (101), the presser frame The presser part (103c) of the part (103) protrudes to the outer side (upper side in FIG. 11) than the dust collection side base part (101). As a result, in the dust collection part (100) of the comparative example, the installation space is further increased in the thickness direction of the dust collection side base part (101). In contrast, the dust collection unit of the present reference type state (30), it is possible to arrange the pressing portion (72c) on the step of the first step portion (61a). For this reason, in this dust collection part (30), it is avoided that the installation space becomes large in the thickness direction of a dust collection side base part (41).

参考の効果−
上記参考では、集塵側基台部(41)の軸方向端部に第1段部(61a)と第2段部(61b)とを形成し、第2段部(61b)の段差に取付枠部(71)の内縁部(71a)を嵌め込み、且つ第1段部(61a)の段差に押え枠部(72)の押え部(72c)を嵌め込むようにしている。これにより、本参考の集塵部(30)では、図11の比較例で示すように、取付枠部(71)や押え部(72c)が、集塵側基台部(41)の両端側に重なってしまうことがないので、集塵部(30)の薄型化を図ることができる。また、取付枠部(71)と押え部(72c)との間に集塵側基台部(41)を挟み込んで支持することで、集塵側基台部(41)を空気通路(23)に確実に保持できる。
- Reference-shaped state of the effect -
In the reference shape state, to form a first step portion in the axial end portion of the dust collecting side base portion (41) (61a) and the second step portion (61b), the step of the second step portion (61b) The inner edge portion (71a) of the attachment frame portion (71) is fitted into the first frame portion (71a), and the presser portion (72c) of the presser frame portion (72) is fitted into the step of the first step portion (61a). Thus, the dust collection unit of the present reference type state (30), as shown in the comparative example shown in FIG. 11, the mounting frame portion (71) and pressing portion (72c) is, the dust collecting-side base portion of (41) Since it does not overlap at both ends, the dust collection part (30) can be made thin. In addition, the dust collection side base part (41) is sandwiched and supported between the mounting frame part (71) and the presser part (72c) so that the dust collection side base part (41) is supported by the air passage (23). Can be held securely.

また、取付枠部(71)の内縁部(71a)に第2段部(61b)を嵌め込むことで、集塵側基台部(41)の位置決めを行うことができる。その結果、集塵電極(40)の位置決めの精度が向上するため、集塵電極(40)と高圧電極(50)との間の距離を適正に保つことができる。更に、押え部(72c)を第1段部(61a)に嵌め込むようにすると、押え部(72c)と高圧側基台部(51)との間の距離も広くなる。従って、高圧電極(50)と押え部(72c)との間の絶縁距離を充分に保つことができる。   Further, the dust collection side base part (41) can be positioned by fitting the second step part (61b) into the inner edge part (71a) of the mounting frame part (71). As a result, since the positioning accuracy of the dust collection electrode (40) is improved, the distance between the dust collection electrode (40) and the high voltage electrode (50) can be kept appropriate. Furthermore, when the presser part (72c) is fitted into the first step part (61a), the distance between the presser part (72c) and the high-pressure side base part (51) is also increased. Therefore, the insulation distance between the high voltage electrode (50) and the presser part (72c) can be sufficiently maintained.

参考の変形例〉
上記参考では、集塵側基台部(41)の開口方向の両側の端部に、段部(61a,61b)をそれぞれ形成するようにしている。しかしながら、例えば図8に示すように、取付枠部(71)側の端部のみに段部(61b)を形成しても良いし、図9に示すように、押え枠部(72)側の端部のみに段部(61a)を形成しても良い。
<Modification of the reference-type state>
In the reference shape state, the opposite ends of the opening direction of the dust collecting side base portion (41), and stepped portions (61a, 61b) to form, respectively. However, for example, as shown in FIG. 8, a stepped portion (61b) may be formed only at the end on the mounting frame (71) side, or as shown in FIG. 9, on the holding frame (72) side. The step (61a) may be formed only at the end.

《実施形態
実施形態は、上記参考について、集塵部(30)の構成が異なるものである。具体的には、図10に示すように、実施形態の集塵側基台部(41)では、参考の第1段部(61a)に換えて、切除部としての傾斜部(63)が形成されている。傾斜部(63)は、集塵側基台部(41)の軸方向端面に近づくに連れて外縁を内方へ縮小するような形状をしている。即ち、傾斜部(63)は、縦仕切板(44)及び横仕切板(45)の長手方向の端部において、取付枠部(71)側の角部を斜めに切除することで構成されている。
<Embodiment >
Exemplary form status, for the reference type condition, in which configuration of the dust collecting portion (30) is different. Specifically, as shown in FIG. 10, the dust collecting side base portion of the exemplary shaped state (41), instead of the first step portion of the reference type state (61a), the inclined portion of the cut portion (63 ) Is formed. The inclined portion (63) has a shape such that the outer edge is reduced inward as it approaches the axial end surface of the dust collection side base portion (41). That is, the inclined portion (63) is configured by obliquely cutting off the corner on the mounting frame portion (71) side at the longitudinal ends of the vertical partition plate (44) and the horizontal partition plate (45). Yes.

一方、参考の取付枠部(71)の内縁部(71a)は、集塵側基台部(41)の傾斜部(63)に対応するように、拡大傾斜部(73)を構成している。つまり、拡大傾斜部(73)は、集塵側基台部(41)の端面側に近づくに連れて内部の開口を小さくするように傾斜している。そして、集塵側基台部(41)では、傾斜部(63)が取付枠部(71)の拡大傾斜部(73)に嵌り込んでいる。一方、集塵側基台部(41)の押え枠部(72)側の端部には、上記参考と同様、第1段部(61a)が形成されており、この第1段部(61a)に押え部(72c)が嵌り込んでいる。 On the other hand, the inner edge of the mounting frame of reference type state (71) (71a) so as to correspond to the dust collecting side base portion inclined portion (41) (63), configured enlarged inclined portion (73) ing. That is, the enlarged inclined portion (73) is inclined so as to reduce the internal opening as it approaches the end face side of the dust collection side base portion (41). In the dust collection side base part (41), the inclined part (63) is fitted into the enlarged inclined part (73) of the mounting frame part (71). On the other hand, the end portion of the presser frame portion (72) side of the dust-side base portion (41), similar to the reference shape state, the first step portion (61a) is formed, the first step portion The presser part (72c) is fitted in (61a).

この実施形態においても、取付枠部(71)の内縁部(71a)が傾斜部(63)に嵌り込み、且つ押え部(72c)が第1段部(61a)に嵌り込むため、図11に示す比較例と比較して、集塵部(30)の薄型化を図ることができる。 Also Oite to this embodiment shaped condition, since the inner edge of the mounting frame portion (71) (71a) is fitted into the inclined section (63), and the pressing portion (72c) is fitted to the first step portion (61a), Compared with the comparative example shown in FIG. 11, the dust collection part (30) can be made thinner.

また、実施形態では、樹脂材料から成る取付枠部(71)が、熱によって膨張/収縮した場合に、取付枠部(71)や集塵側基台部(41)に作用する応力を軽減し、且つ集塵側基台部(41)が径方向に変位してしまうことを防止している。 Further, in the exemplary form condition, mounting frame portion made of a resin material (71) is, when inflated / contracted by heat, mounting frame portion (71) and the dust collecting side base portion stress acting on (41) The dust collection side base (41) is prevented from being displaced in the radial direction.

具体的には、例えば取付枠部(71)が熱によって膨張又は収縮し、取付枠部(71)の内縁部(71a)が径方向内側に変位したとする。この場合、拡大傾斜部(73)が傾斜部(63)を押し付けられる。その結果、傾斜部(63)が拡大傾斜部(73)をすべるようにしながら、集塵側基台部(41)が、図10における上側へ変位する。このため、取付枠部(71)や集塵側基台部(41)に作用する応力が軽減されるので、取付枠部(71)や集塵側基台部(41)が変形したり、破損したりすることが回避される。   Specifically, for example, it is assumed that the attachment frame portion (71) expands or contracts due to heat and the inner edge portion (71a) of the attachment frame portion (71) is displaced radially inward. In this case, the enlarged inclined portion (73) presses the inclined portion (63). As a result, the dust collecting side base portion (41) is displaced upward in FIG. 10 while the inclined portion (63) slides along the enlarged inclined portion (73). For this reason, since the stress acting on the mounting frame (71) and the dust collecting side base (41) is reduced, the mounting frame (71) and the dust collecting base (41) are deformed, It is avoided that it breaks.

また、このように集塵側基台部(41)を通気孔(46)の軸方向に変位させると、集塵側基台部(41)が径方向に変位してしまうことが回避される。集塵側基台部(41)の径方向での変位が回避されると、集塵側基台部(41)の通気孔(46)の内壁と、高圧側突起板(52)との間の距離が変化してしまうことも回避される。このため、集塵側基台部(41)の通気孔(46)の内壁と、高圧側突起板(52)との間では、所望の電界が形成されるので、集塵性能の安定化を図ることができる。   Further, when the dust collection side base portion (41) is displaced in the axial direction of the vent hole (46) in this way, the dust collection side base portion (41) is avoided from being displaced in the radial direction. . If displacement in the radial direction of the dust collection side base (41) is avoided, the space between the inner wall of the ventilation hole (46) of the dust collection side base (41) and the high pressure side projection plate (52) It is also possible to avoid the change of the distance. For this reason, a desired electric field is formed between the inner wall of the ventilation hole (46) of the dust collection side base (41) and the high pressure side projection plate (52), so that the dust collection performance is stabilized. Can be planned.

また、同図の構成において、取付枠部(71)が熱によって膨張又は収縮し、取付枠部(71)の内縁部(71a)が径方向の外側に変位したとする。この場合には、取付枠部(71)の内縁部(71a)の開口が広がり、集塵側基台部(41)が押え枠部(72)に押さえられて、図10における下側へ変位する。従って、このような場合にも、集塵側基台部(41)の径方向の変位を回避できるので、集塵性能の安定化を図ることができる。   Moreover, in the structure of the figure, it is assumed that the attachment frame portion (71) is expanded or contracted by heat, and the inner edge portion (71a) of the attachment frame portion (71) is displaced outward in the radial direction. In this case, the opening of the inner edge portion (71a) of the mounting frame portion (71) is widened, and the dust collection side base portion (41) is pressed by the presser frame portion (72), and is displaced downward in FIG. To do. Accordingly, even in such a case, since the radial displacement of the dust collection side base portion (41) can be avoided, the dust collection performance can be stabilized.

《その他の実施形態》
記実施形態において、集塵電極(40)を導電性の樹脂材料で構成しても良いし、高圧電極(50)を金属材料で構成しても良い。また、荷電部(12)は、塵埃をマイナスに帯電させるものであっても良く、集塵電極(40)は、マイナスに帯電した塵埃を捕集する集塵面が形成されるものであっても良い。
<< Other Embodiments >>
In the above SL embodiment, may be constituted the dust collecting electrode (40) of a conductive resin material may constitute a high-voltage electrode (50) 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.

また、上記実施形態では、集塵電極(40)の集塵側基台部(41)を上流側に、高圧電極(50)の高圧側基台部(51)を下流側に配置しているが、高圧側基台部(51)を上流側に、集塵側基台部(41)を下流側に配置するようにしても良い。   Moreover, in the said embodiment, the dust collection side base part (41) of the dust collection electrode (40) is arrange | positioned in the upstream, and the high voltage | pressure side base part (51) of the high voltage electrode (50) is arrange | positioned in the downstream. However, the high pressure side base part (51) may be arranged on the upstream side, and the dust collection side base part (41) may be arranged on the downstream side.

以上説明したように、本発明は、格子構造の電極を有して、被処理空気中の塵埃を捕集する集塵装置について有用である。   As described above, the present invention is useful for a dust collector that has an electrode having a lattice structure and collects dust in the air to be treated.

図1は、参考形態に係る空気清浄機の全体構成を示す概略の斜視図である。FIG. 1 is a schematic perspective view showing an overall configuration of an air cleaner according to a reference embodiment. 図2は、参考形態に係る空気清浄機の内部を示す概略の構成図である。FIG. 2 is a schematic configuration diagram showing the inside of the air cleaner according to the reference embodiment. 図3は、参考形態に係る集塵部の全体構成を示す斜視図であって、集塵電極と高圧電極とを分解したものである。Figure 3 is a perspective view showing the overall structure of the dust collecting unit according to the reference embodiment is obtained by decomposing the dust collecting electrode and the high voltage electrode. 図4は、参考形態に係る集塵電極と高圧電極とを示すものであり、図4(A)は、集塵電極を集塵側突起板の側から視た平面図であり、図4(B)は、集塵電極の縦断面図であり、図4(C)は、高圧電極の縦断面図であり、図4(D)は、高圧電極を高圧側突起板の側から視た平面図である。FIG. 4 shows a dust collection electrode and a high voltage electrode according to a reference 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. 4D is a plan view of the high-voltage electrode viewed from the side of the high-voltage projection plate. FIG. 図5は、参考形態に係る集塵電極と高圧電極とが組み合わされた状態のものであり、図5(A)は集塵電極を集塵側突起板の側から視た平面図であり、図5(B)は、集塵部の縦断面図であり、図5(C)は高圧電極を高圧側突起板の側から視た平面図である。FIG. 5 shows a state in which the dust collecting electrode and the high voltage electrode according to the reference embodiment are combined, and FIG. 5 (A) is a plan view of the dust collecting electrode viewed from the dust collecting 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. 図6は、参考態に係る集塵側基台部と枠部材の横断面図である。Figure 6 is a cross-sectional view of the dust-collecting-side base portion and the frame member according to the reference shape state. 図7は、参考態に係る集塵側基台部と枠部材の縦断面図である。Figure 7 is a longitudinal sectional view of the dust-collecting-side base portion and the frame member according to the reference shape state. 図8は、参考の変形例の第1の例に係る集塵側基台部と枠部材の横断面図である。Figure 8 is a cross-sectional view of the dust-collecting-side base portion and the frame member according to the first example of modification of the reference type status. 図9は、参考の変形例の第2の例に係る集塵側基台部と枠部材の横断面図である。Figure 9 is a cross-sectional view of the dust-collecting-side base portion and the frame member according to the second example of the modification of the reference type status. 図10は、実施形態に係る集塵側基台部と枠部材の横断面図である。Figure 10 is a cross-sectional view of the dust-collecting-side base portion and the frame member according to the exemplary shape state. 図11は、比較例の集塵電極の概略構成図である。FIG. 11 is a schematic configuration diagram of a dust collection electrode of a comparative example.

20 ケーシング
30 集塵部(集塵装置)
40 集塵電極(第1電極)
41 集塵側基台部(基台部)
46 通気孔
50 高圧電極(第2電極)
52 高圧側突起板(突起部)
61a 第1段部(段部、切除部)
61b 第2段部(段部、切除部)
63 傾斜部(切除部)
70 枠部材
71 取付枠部
71a 内縁部
72 押え枠部
72c 押え部(内縁部)
73 拡大傾斜部
20 casing
30 Dust collector (dust collector)
40 Dust collection electrode (first electrode)
41 Dust collection side base (base)
46 Vent
50 High voltage electrode (second electrode)
52 High-pressure side protrusion (protrusion)
61a First step (step, excision)
61b Second step (step, excision)
63 Inclined part (excised part)
70 Frame member
71 Mounting frame
71a Inner edge
72 Presser frame
72c Presser part (inner edge)
73 Enlarged slope

Claims (3)

複数の通気孔(46)が開口する格子構造の基台部(41)を有する第1電極(40)と、該第1電極(40)の通気孔(46)に挿通される複数の突起部(52)を有する第2電極(50)とを備え、上記第1電極(40)と第2電極(50)との間に被処理空気中の塵埃を捕集するための電界を形成する集塵装置であって、
上記被処理空気が流れる空気通路(23)を形成するケーシング(20)に固定されると共に、上記第1電極(40)の基台部(41)を内部に支持する枠部材(70)を更に備え、
上記第1電極(40)の基台部(41)における通気孔(46)の軸方向端部には、上記枠部材(70)の内縁部(71a,72c)が嵌り込むように該基台部(41)の外縁を内方へ縮小させた切除部(61a,61b,63)が形成され
上記枠部材(70)は、上記ケーシング(20)に取り付けられる枠状の取付枠部(71)と、上記該取付枠部(71)に取り付けられる枠状の押え枠部(72)とを有し、上記取付枠部(71)と押え枠部(72)との間に第1電極(40)の基台部(41)を挟み込んで支持するように構成され、
上記第1電極(40)の基台部(41)における上記取付枠部(71)側の端部には、該取付枠部(71)の内縁部(71a)が嵌り込むように、上記切除部(63)が形成され、
上記切除部は、上記基台部(41)の軸方向の端面側に近づくに連れて該基台部(41)の外縁を内方へ縮小するような傾斜部(63)を構成しており、
上記取付枠部(71)の内縁部(71a)は、上記傾斜部(63)に対応して、上記基台部(41)の端面側に近づくに連れて開口を小さくするような拡大傾斜部(73)を構成していることを特徴とする集塵装置。
A first electrode (40) having a base part (41) having a lattice structure in which a plurality of vent holes (46) are opened, and a plurality of protrusions inserted through the vent holes (46) of the first electrode (40) A second electrode (50) having (52) and forming an electric field for collecting dust in the air to be treated between the first electrode (40) and the second electrode (50). A dust device,
A frame member (70) that is fixed to a casing (20) that forms an air passage (23) through which the air to be treated flows and that supports a base portion (41) of the first electrode (40) inside is further provided. Prepared,
The base so that the inner edges (71a, 72c) of the frame member (70) are fitted into the axial ends of the vent holes (46) in the base (41) of the first electrode (40). A cut part (61a, 61b, 63) is formed by reducing the outer edge of the part (41) inward ,
The frame member (70) has a frame-shaped attachment frame portion (71) attached to the casing (20) and a frame-shaped presser frame portion (72) attached to the attachment frame portion (71). The base part (41) of the first electrode (40) is sandwiched and supported between the mounting frame part (71) and the presser frame part (72),
The excision is made so that the inner edge (71a) of the mounting frame (71) is fitted into the end of the base (41) of the first electrode (40) on the mounting frame (71) side. Part (63) is formed,
The excision part constitutes an inclined part (63) that reduces the outer edge of the base part (41) inward as it approaches the axial end face side of the base part (41). ,
The inner edge part (71a) of the mounting frame part (71) corresponds to the inclined part (63), and an enlarged inclined part that reduces the opening as it approaches the end face side of the base part (41) A dust collector comprising (73) .
複数の通気孔(46)が開口する格子構造の基台部(41)を有する第1電極(40)と、該第1電極(40)の通気孔(46)に挿通される複数の突起部(52)を有する第2電極(50)とを備え、上記第1電極(40)と第2電極(50)との間に被処理空気中の塵埃を捕集するための電界を形成する集塵装置であって、
上記被処理空気が流れる空気通路(23)を形成するケーシング(20)に固定されると共に、上記第1電極(40)の基台部(41)を内部に支持する枠部材(70)を更に備え、
上記第1電極(40)の基台部(41)における通気孔(46)の軸方向端部には、上記枠部材(70)の内縁部(71a,72c)が嵌り込むように該基台部(41)の外縁を内方へ縮小させた切除部(61a,61b,63)が形成され、
上記枠部材(70)は、上記ケーシング(20)に取り付けられる枠状の取付枠部(71)と、上記該取付枠部(71)に取り付けられる枠状の押え枠部(72)とを有し、上記取付枠部(71)と押え枠部(72)との間に第1電極(40)の基台部(41)を挟み込んで支持するように構成され、
上記第1電極(40)の基台部(41)における上記取付枠部(71)側の端部には、該取付枠部(71)の内縁部(71a)が嵌り込むように、上記切除部(61b,63)が形成され、
上記第1電極(40)の基台部(41)における上記押え枠部(72)側の端部にも、該押え枠部(72)の内縁部(72c)が嵌り込むように、上記切除部(61a)が形成され
上記取付板部(71)側の切除部は、上記基台部(41)の軸方向の端面側に近づくに連れて該基台部(41)の外縁を内方へ縮小するような傾斜部(63)を構成しており、
上記取付枠部(71)の内縁部(71a)は、上記傾斜部(63)に対応して、上記基台部(41)の端面側に近づくに連れて開口を小さくするような拡大傾斜部(73)を構成していることを特徴とする集塵装置。
A first electrode (40) having a base part (41) having a lattice structure in which a plurality of vent holes (46) are opened, and a plurality of protrusions inserted through the vent holes (46) of the first electrode (40) A second electrode (50) having (52) and forming an electric field for collecting dust in the air to be treated between the first electrode (40) and the second electrode (50). A dust device,
A frame member (70) that is fixed to a casing (20) that forms an air passage (23) through which the air to be treated flows and that supports a base portion (41) of the first electrode (40) inside is further provided. Prepared,
The base so that the inner edges (71a, 72c) of the frame member (70) are fitted into the axial ends of the vent holes (46) in the base (41) of the first electrode (40). A cut part (61a, 61b, 63) is formed by reducing the outer edge of the part (41) inward,
The frame member (70) has a frame-shaped attachment frame portion (71) attached to the casing (20) and a frame-shaped presser frame portion (72) attached to the attachment frame portion (71). The base part (41) of the first electrode (40) is sandwiched and supported between the mounting frame part (71) and the presser frame part (72),
The excision is made so that the inner edge (71a) of the mounting frame (71) is fitted into the end of the base (41) of the first electrode (40) on the mounting frame (71) side. Part (61b, 63) is formed,
The excision is made so that the inner edge portion (72c) of the presser frame portion (72) is fitted into the end portion of the base portion (41) of the first electrode (40) on the side of the presser frame portion (72). Part (61a) is formed ,
The cut-out portion on the mounting plate (71) side is an inclined portion that reduces the outer edge of the base portion (41) inward as it approaches the end surface side in the axial direction of the base portion (41). (63)
The inner edge part (71a) of the mounting frame part (71) corresponds to the inclined part (63), and an enlarged inclined part that reduces the opening as it approaches the end face side of the base part (41) A dust collector comprising (73) .
請求項1又は2において、
上記第1電極(40)は金属材料で構成され、上記枠部材(70)は樹脂材料で構成されていることを特徴とする集塵装置。
In claim 1 or 2 ,
The first electrode (40) is made of a metal material, and the frame member (70) is made of a resin material.
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