JP2007083100A

JP2007083100A - Electric dust-collection unit

Info

Publication number: JP2007083100A
Application number: JP2005271636A
Authority: JP
Inventors: Toru Kai; 徹甲斐; Hiroshi Iwahashi; 弘岩橋
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2005-09-20
Filing date: 2005-09-20
Publication date: 2007-04-05

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric dust-collection unit capable of being made to a thin shape while ensuring a creeping distance. <P>SOLUTION: The electric dust-collection unit provided on an air flow passage of an air conditioner or the like is constituted by a front surface panel 1 molded to a lattice shape; a plurality of needle-like electrodes 2 having a discharge function by applying a high voltage; a parallel electrode 3 provided in parallel to the needle-like electrode 2; a dust-collection filter 5 provided on a downstream side of the electric dust-collection unit; and a storage frame 6 for fixing the dust-collection filter 5. The parallel electrode 3 is a flat plate-like electrode and the creeping distance is ensured by arranging the surface in parallel to a direction of wind passing through the electric dust-collection unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、空気調和機の空気流路に設け、空気調和される空気中に含まれる粉塵等を除去する電気集塵ユニットに関する。 The present invention relates to an electric dust collection unit that is provided in an air flow path of an air conditioner and removes dust and the like contained in air to be air conditioned.

従来、この種の電気集塵ユニットには針状の放電電極を設け、風路の下流側にフィルターを設けたものが知られている（例えば、特許文献１参照）。 2. Description of the Related Art Conventionally, this type of electrostatic dust collection unit is known in which a needle-like discharge electrode is provided and a filter is provided on the downstream side of the air passage (see, for example, Patent Document 1).

以下、その電気集塵ユニットについて図１０を参照しながら説明する。 The electric dust collection unit will be described below with reference to FIG.

図に示すように、吸込口１０１および吹出口１０２を形成したフィルター枠１０３の吸込口１０１側に針状の放電電極１０４を設け、放電電極１０４と対向しフィルター枠１０３の吹出口１０２内にラスまたはパンチングメタル等の通気可能な略コの字状のアース電極１０５を設け、アース電極１０５の風下側にフィルター１０６を設け、フィルター装置１０７を形成していた。
特開２００３−１０７３１号公報（〔００１４〕、図１） As shown in the figure, a needle-like discharge electrode 104 is provided on the suction port 101 side of the filter frame 103 in which the suction port 101 and the blower port 102 are formed. Alternatively, a substantially U-shaped ground electrode 105 such as punching metal is provided, and a filter 106 is provided on the leeward side of the ground electrode 105 to form a filter device 107.
Japanese Patent Laying-Open No. 2003-10731 ([0014], FIG. 1)

このような従来の電気集塵ユニットでは、放電電極１０４の尖先部先端とアース電極１０５の沿面距離Ｄ１（尖先部とアース電極コの字状の底面との距離）は一定値以上確保しないと放電性能が得られない。そのため沿面距離Ｄ１を確保するため、放電電極１０４とアース電極１０５を高さ方向について離して設置しており電気集塵ユニットの厚みが大きくなるという課題があった。 In such a conventional electrostatic dust collection unit, the creepage distance D1 (distance between the tip and the ground electrode U-shaped bottom) of the tip of the discharge electrode 104 and the ground electrode 105 is not secured above a certain value. And discharge performance is not obtained. Therefore, in order to ensure the creepage distance D1, the discharge electrode 104 and the ground electrode 105 are separated from each other in the height direction, and there is a problem that the thickness of the electrostatic dust collection unit increases.

本発明は、上記課題を解決するものであり、放電電極とアース電極の沿面距離を確保しつつ小型化可能な電気集塵ユニットを提供すること目的としている。 The present invention solves the above-described problems, and an object thereof is to provide an electric dust collection unit that can be miniaturized while ensuring a creepage distance between a discharge electrode and a ground electrode.

本発明の電気集塵ユニットは上記目的を達成するために、複数の尖先部を持つ針状電極と、この針状電極を取り付ける格子状の前面パネルと、前記針状電極と平行に設けた平行電極と、集塵フィルターと、この平行電極と集塵フィルターを収納する収納枠とで構成され、前記平行電極は、風向と平行に設けられたものである。 In order to achieve the above object, the electric dust collection unit of the present invention is provided with needle-shaped electrodes having a plurality of pointed portions, a lattice-shaped front panel to which the needle-shaped electrodes are attached, and in parallel with the needle-shaped electrodes. A parallel electrode, a dust collecting filter, and a storage frame for storing the parallel electrode and the dust collecting filter are provided, and the parallel electrode is provided in parallel with the wind direction.

この手段により、針状電極と平行電極の沿面距離を確保しながら装置の薄型化をを図ることができる電気集塵ユニットを得られる。 By this means, it is possible to obtain an electric dust collection unit that can reduce the thickness of the apparatus while ensuring the creepage distance between the needle electrode and the parallel electrode.

また、他の手段は、収納枠または集塵フィルターのどちらか一方または両方の形状が網目状としたものである。 Another means is that the shape of one or both of the storage frame and the dust collecting filter is a mesh.

この手段により、電気集塵ユニット裏側から異物等が侵入して針状電極に直接触れたりしないよう防護することのできる電気集塵ユニットを得られる。 By this means, it is possible to obtain an electric dust collection unit that can protect against foreign objects from entering from the back side of the electric dust collection unit and touching the needle electrodes directly.

また、他の手段は、針状電極の尖先部は下流方向に先端を向け、平行電極は複数の平行に設置された電極板で構成され、針状電極は平行電極の電極板の略中間に位置させたものである。 Another means is that the tip of the needle electrode is pointed in the downstream direction, the parallel electrode is composed of a plurality of parallel electrode plates, and the needle electrode is substantially in the middle of the parallel electrode plate. It is located in.

この手段により、針状電極と平行電極の沿面距離を確保しながら装置の薄型化を図ることができる電気集塵ユニットを得られる。 By this means, it is possible to obtain an electric dust collection unit that can reduce the thickness of the apparatus while ensuring the creepage distance between the needle electrode and the parallel electrode.

また、他の手段は、平行電極は、複数の電極板と、それぞれの電極板を接続する接続部と、電極板と接続板を接続する補強部によって構成され、針状電極の尖先部先端と補強部の最短距離が補強部の辺との距離にあたり、その針状電極の尖先部先端と補強部の最短距離Ｌ１と電極板と針状電極の尖先部先端との最短距離Ｌ２との関係が、Ｌ１≦Ｌ２となるものである。 Another means is that the parallel electrode is composed of a plurality of electrode plates, a connection portion that connects each electrode plate, and a reinforcing portion that connects the electrode plate and the connection plate. The shortest distance between the reinforcing portion and the side of the reinforcing portion is the distance between the tip of the needle-like electrode and the shortest distance L1 between the reinforcing portion and the shortest distance L2 between the electrode plate and the tip of the needle-like electrode. Is such that L1 ≦ L2.

この手段により、複数の電極板で構成された平行電極をひとつの部品で構成することができる。また、平行電極電極板と針状電極先端部の距離は補強部と針状電極先端部との距離以下であるため、針状電極と平行電極間にできる電界に接続板及び補強部が影響することが少なくなる。 By this means, the parallel electrode constituted by a plurality of electrode plates can be constituted by one component. In addition, since the distance between the parallel electrode electrode plate and the needle electrode tip is less than the distance between the reinforcement electrode and the needle electrode tip, the connection plate and the reinforcement part affect the electric field generated between the needle electrode and the parallel electrode. Less.

また、他の手段は、針状電極の尖先部は、風の流れる方向と垂直な方向に先端を向け、平行電極は針状電極の尖先部の先端が向いた方向と垂直面に設けられたものである。 Another means is that the tip of the needle electrode has its tip pointed in a direction perpendicular to the direction of air flow, and the parallel electrode is provided on a plane perpendicular to the direction in which the tip of the needle tip pointed. It is what was done.

この手段により、装置の薄型化ができる。 By this means, the apparatus can be thinned.

また、他の手段は、風の流れる方向と垂直な方向に先端を向けた針状電極は複数の電極板で構成され、それらの電極板は平行に設置され、かつ、尖先部は針状電極の他の電極板の尖先部と対向するように先端を向けたものである。 In addition, the other means is that the needle-like electrode whose tip is directed in the direction perpendicular to the wind flow direction is composed of a plurality of electrode plates, the electrode plates are installed in parallel, and the pointed portion is needle-like The tip is directed so as to face the tip of the other electrode plate of the electrode.

この手段により、平行電極の電極板の両側に均一に電界を形成することができる。 By this means, an electric field can be uniformly formed on both sides of the electrode plate of the parallel electrode.

また、他の手段は、平行電極と集塵フィルターを同時に収納枠で抑えて固定するものである。 Another means is to fix the parallel electrode and the dust collecting filter simultaneously by holding them with the storage frame.

この手段により、部品点数を少なくして薄型化をはかり、かつ、組立作業が容易な電気集塵ユニットを提供できる。 By this means, it is possible to provide an electric dust collection unit that can be reduced in thickness by reducing the number of parts and can be easily assembled.

また、他の手段は、前面パネルに丸ピンを設け、平行電極に丸穴を設け、収納枠に押え穴を設け、平行電極の丸穴と収納枠の押え穴に前面パネルに設けた丸ピンを嵌合させることを特徴とするものである。 Another means is to provide a round pin on the front panel, a round hole in the parallel electrode, a holding hole in the storage frame, and a round pin provided on the front panel in the round hole of the parallel electrode and the holding hole in the storage frame. Are fitted.

この手段により、部品点数を少なくして薄型化をはかり、かつ、組立作業が容易な電気集塵ユニットを提供できる。また、金属のネジ等を用いずに固定でき、高電圧部を露出することがない。 By this means, it is possible to provide an electric dust collection unit that can be reduced in thickness by reducing the number of parts and can be easily assembled. Moreover, it can fix without using a metal screw etc., and does not expose a high voltage part.

また、他の手段は、前面パネルの下流側に平行電極を固定する溝を設けたことを特徴とするものである。 The other means is characterized in that a groove for fixing the parallel electrode is provided on the downstream side of the front panel.

この手段により、薄板で構成された電極板を変形させることなく固定することができ、かつ、電極を露出することがなく固定できる。 By this means, the electrode plate made of a thin plate can be fixed without being deformed, and the electrode can be fixed without being exposed.

また、他の手段は、平行電極に集塵フィルターを固定する枠を設けたものである。 Another means is to provide a frame for fixing the dust collecting filter to the parallel electrodes.

この手段により、平行電極と集塵フィルターの接触面積を確保して、集塵フィルターを帯電し易くし、集塵効率をあげる効果がある。 By this means, there is an effect that the contact area between the parallel electrode and the dust collecting filter is secured, the dust collecting filter is easily charged, and the dust collecting efficiency is increased.

本発明によれば、集塵性能を維持しつつ装置の薄型化に効果のある電気集塵ユニットを提供できる。 According to the present invention, it is possible to provide an electric dust collection unit that is effective in reducing the thickness of the apparatus while maintaining dust collection performance.

また、組立しやすく、電極の保護ができる電気集塵ユニットを提供することができる。 Further, it is possible to provide an electric dust collection unit that can be easily assembled and can protect the electrodes.

本発明の請求項１記載の発明は、複数の尖先部を持つ針状電極と、この針状電極を取り付ける格子状の前面パネルと、前記針状電極と平行に設けた平行電極と、集塵フィルターと、この平行電極と集塵フィルターを収納する収納枠とで構成され、前記平行電極は、風向と平行に設けられたものであり、針状電極と平行電極の沿面距離を確保しながら装置の薄型化を図ることができる電気集塵ユニットを得られる。 The invention according to claim 1 of the present invention includes a needle-like electrode having a plurality of pointed portions, a grid-like front panel to which the needle-like electrode is attached, a parallel electrode provided in parallel with the needle-like electrode, Consists of a dust filter and a storage frame for storing the parallel electrode and the dust collection filter. The parallel electrode is provided in parallel with the wind direction, while ensuring a creepage distance between the needle electrode and the parallel electrode. An electric dust collection unit capable of reducing the thickness of the apparatus can be obtained.

また、本発明の請求項２記載の発明は、収納枠または集塵フィルターのどちらか一方または両方の形状が網目状としたものであり、電気集塵ユニット裏側から異物等が侵入して針状電極に直接触れたりしないよう防護することのできるものであり、防護専用の部材を用いることがないため、結果電気集塵ユニットの薄型化を図ることが可能になる。 The invention according to claim 2 of the present invention is such that either one or both of the storage frame and the dust collecting filter has a mesh shape, and foreign matter or the like enters from the back side of the electric dust collecting unit to form needles. Since it can protect so that it may not touch an electrode directly, it does not use the member only for protection, Therefore As a result, it becomes possible to achieve thickness reduction of an electrostatic dust collection unit.

また、本発明の請求項３記載の発明は、針状電極の尖先部は下流方向に先端を向け、平行電極は複数の平行に設置された電極板で構成され、針状電極は平行電極の電極板の略中間に位置させたものであり、針状電極と平行電極の沿面距離を確保しながら装置の薄型化を図ることができる電気集塵ユニットを得られる。 In the invention according to claim 3 of the present invention, the pointed portion of the needle-like electrode is pointed in the downstream direction, the parallel electrode is composed of a plurality of parallel electrode plates, and the needle-like electrode is a parallel electrode. Therefore, it is possible to obtain an electric dust collection unit that can reduce the thickness of the apparatus while ensuring the creepage distance between the needle electrode and the parallel electrode.

また、本発明の請求項４記載の発明は、平行電極は、複数の電極板と、それぞれの電極板を接続する接続部と、電極板と接続板を接続する補強部によって構成され、針状電極の尖先部先端と補強部の最短距離が補強部の辺との距離にあたり、その針状電極の尖先部先端と補強部の最短距離Ｌ１と電極板と針状電極の尖先部先端との最短距離Ｌ２との関係が、Ｌ１≦Ｌ２となるものであり、複数の電極板で構成された平行電極をひとつの部品で構成するため、電気集塵ユニットの薄型化、組立の簡略化を図ることができる。また、平行電極電極板と針状電極先端部の距離は補強部と針状電極先端部との距離以下であるため、針状電極と平行電極間にできる電界に接続板及び補強部が影響することが少なくなる。 In the invention according to claim 4 of the present invention, the parallel electrode is constituted by a plurality of electrode plates, a connecting portion connecting the respective electrode plates, and a reinforcing portion connecting the electrode plates and the connecting plate, and has a needle shape. The shortest distance between the tip of the electrode tip and the reinforcement corresponds to the distance between the side of the reinforcement, the shortest distance L1 between the tip of the needle electrode and the reinforcement, the tip of the electrode plate and the tip of the needle electrode The relationship with the shortest distance L2 is L1 ≦ L2, and the parallel electrode made up of a plurality of electrode plates is made up of a single component, making the electrostatic precipitator unit thinner and simplifying assembly. Can be achieved. In addition, since the distance between the parallel electrode electrode plate and the needle electrode tip is less than the distance between the reinforcement electrode and the needle electrode tip, the connection plate and the reinforcement part affect the electric field generated between the needle electrode and the parallel electrode. Less.

また、本発明の請求項５記載の発明は、針状電極の尖先部は、風の流れる方向と垂直な方向に先端を向け、平行電極は針状電極の尖先部の先端が向いた方向と垂直面に設けられたものであり、電気集塵ユニットの薄型化を図ることができる。 In the invention according to claim 5 of the present invention, the tip of the needle-like electrode is pointed at the tip in a direction perpendicular to the direction of the air flow, and the tip of the tip of the needle-like electrode is pointed at the parallel electrode. It is provided on a plane perpendicular to the direction, and the electric dust collection unit can be made thin.

また、本発明の請求項６記載の発明は、風の流れる方向と垂直な方向に先端を向けた針状電極は複数の電極板で構成され、それらの電極板は平行に設置され、かつ、尖先部は針状電極の他の電極板の尖先部と対向するように先端を向けたものであり、電気集塵ユニットの薄型化を図ることができ、平行電極の電極板の両側に均一に電界を形成することができる。 Further, in the invention according to claim 6 of the present invention, the needle-like electrode whose tip is directed in the direction perpendicular to the wind flow direction is composed of a plurality of electrode plates, and these electrode plates are installed in parallel, and The tip has its tip facing the tip of the other electrode plate of the needle-like electrode, and can reduce the thickness of the electrostatic dust collection unit. An electric field can be formed uniformly.

また、本発明の請求項７記載の発明は、平行電極と集塵フィルターを同時に収納枠で抑えて固定するものであり、部品点数を少なくして薄型化をはかり、かつ、組立作業が容易な電気集塵ユニットを提供できる。 According to the seventh aspect of the present invention, the parallel electrode and the dust collecting filter are simultaneously held and fixed by the storage frame, the thickness is reduced by reducing the number of parts, and the assembly work is easy. An electric dust collection unit can be provided.

また、本発明の請求項８記載の発明は、前面パネルに丸ピンを設け、平行電極に丸穴を設け、収納枠に押え穴を設け、平行電極の丸穴と収納枠の押え穴に前面パネルに設けた丸ピンを嵌合させることを特徴とするものであり、部品点数を少なくして薄型化をはかり、かつ、組立作業が容易な電気集塵ユニットを提供できる。また、金属のネジ等を用いずに固定でき、高電圧部を露出することがない。 In the invention according to claim 8 of the present invention, a round pin is provided on the front panel, a round hole is provided in the parallel electrode, a holding hole is provided in the storage frame, and the round hole of the parallel electrode and the holding hole of the storage frame are provided on the front surface. A round pin provided on the panel is fitted, and an electric dust collecting unit can be provided which can be reduced in thickness by reducing the number of parts and can be easily assembled. Moreover, it can fix without using a metal screw etc., and does not expose a high voltage part.

また、本発明の請求項９記載の発明は、前面パネルの下流側に平行電極を固定する溝を設けたことを特徴とするものであり、薄板で構成された電極板を変形させることなく固定することができ、かつ、電極を露出することがなく固定することのできる電気集塵ユニットを提供することができる。 The invention according to claim 9 of the present invention is characterized in that a groove for fixing the parallel electrode is provided on the downstream side of the front panel, and the electrode plate made of a thin plate is fixed without being deformed. It is possible to provide an electric dust collection unit that can be fixed without exposing the electrodes.

この手段により、平行電極と集塵フィルターの接触面積を確保して、集塵フィルターを帯電し易くし、集塵効率をあげる効果がある電気集塵ユニットを提供することができる。 By this means, it is possible to provide an electric dust collection unit that secures a contact area between the parallel electrode and the dust collection filter, makes it easy to charge the dust collection filter, and increases the dust collection efficiency.

以下、本発明の実施の形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
本発明の第１の実施の形態について、図１〜２を用いて説明する。 (Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS.

図１〜２に示すように、空気調和機（図示せず）などの空気流路に設けられる電気集塵ユニットは、格子状に成形した前面パネル１と、高電圧を印可させることで放電機能を有する複数の針状電極２と、針状電極２と平行に設けた平行電極３と、電気集塵ユニットの下流側に設けられた集塵フィルター５と、集塵フィルター５を固定する収納枠６とで構成される。 As shown in FIGS. 1 and 2, an electric dust collection unit provided in an air flow path such as an air conditioner (not shown) has a front panel 1 formed in a lattice shape and a discharge function by applying a high voltage. A plurality of needle-like electrodes 2, parallel electrodes 3 provided parallel to the needle-like electrodes 2, a dust collection filter 5 provided on the downstream side of the electric dust collection unit, and a storage frame for fixing the dust collection filter 5 6.

平行電極３は、複数の平板の電極であり、その面は電気集塵ユニットを通過する風向（図１の上から下の方向）と平行に配置する。それぞれの極板間の距離は略等しくし、その略中間の位置に針状電極２の尖先部先端が位置するようにする。また、集塵フィルター５または収納枠６は、網目状の形状を有している。 The parallel electrode 3 is a plurality of flat-plate electrodes, and its surface is arranged in parallel with the wind direction (from the top to the bottom in FIG. 1) passing through the electric dust collection unit. The distance between each electrode plate is made substantially equal so that the tip of the tip of the needle-like electrode 2 is located at a substantially intermediate position. The dust collection filter 5 or the storage frame 6 has a mesh shape.

上記構成において、空気調和機（図示せず）等の空気流路に高電圧印可装置（図示せず）を介して取り付けた電気集塵ユニットに電気が流れると、吸込口となる前面パネル１に設けた針状電極２と平行電極組３間に印可されている高電圧（針状電極２側がマイナス）により、針状電極２の付近に大きな電界が形成され、また針状電極２から空気中に電子が放出される。この分離した電子が別の空気分子に結合するなどして空気分子がイオン化されて空気イオンとなり、空気イオンが電界の力によって拡散し、埃に付着して、埃を帯電させる。帯電した埃粒子は粒子同士の緩衝を防ぎ、集塵フィルター５に埃が、引き寄せられる。 In the above configuration, when electricity flows through an electric dust collecting unit attached to an air flow path such as an air conditioner (not shown) via a high voltage applying device (not shown), the front panel 1 serving as a suction port Due to the high voltage applied between the provided needle electrode 2 and the parallel electrode set 3 (the needle electrode 2 side is negative), a large electric field is formed in the vicinity of the needle electrode 2 and from the needle electrode 2 to the air. Electrons are emitted to The separated electrons bind to other air molecules to ionize the air molecules to become air ions, which are diffused by the force of the electric field and adhere to the dust to charge the dust. The charged dust particles prevent the particles from being buffered, and the dust is attracted to the dust collection filter 5.

電気集塵ユニットの集塵性能は、針状電極２と平行電極３の間の沿面距離に影響する。沿面距離はできるだけ大きく取ったほうが良いが、装置の外形寸法が大きくなったり、印加電圧を大きく取る必要があるなど欠点も多い。そのため、本実施の形態では、限られた外形寸法の中でできるだけ沿面距離を大きく取るため、風向の下流側に平行電極の電極板を設けず、平行電極は風向と平行な電極板のみで構成する。下流側に電極板を設けると、沿面距離は下流側の電極板と針状電極尖先部先端との距離となり、沿面距離を確保すると装置の厚さが増大し、薄型化につながらないためである。 The dust collection performance of the electric dust collection unit affects the creeping distance between the needle electrode 2 and the parallel electrode 3. The creepage distance should be as large as possible. However, there are many drawbacks such as the outer dimensions of the device becoming larger and the applied voltage required to be larger. Therefore, in this embodiment, in order to make the creepage distance as large as possible within the limited external dimensions, the parallel electrode is configured only by the electrode plate parallel to the wind direction without providing the electrode plate of the parallel electrode on the downstream side of the wind direction. To do. If the electrode plate is provided on the downstream side, the creepage distance is the distance between the downstream electrode plate and the tip of the needle-like electrode tip, and securing the creepage distance increases the thickness of the device and does not lead to a reduction in thickness. .

上記のように、平行電極３を風向と平行な面だけの電極板で構成すると、下流側から針状電極２の尖先部が露出する形になる。針状電極２の尖先部は先端が鋭角にとがった形状をしており、異物に触れると変形しやすい。そのため、電気集塵ユニットの針状電極２の下流側に配置する集塵フィルター５または収納枠６を網目状の形状とすることによって針状電極２の尖先部を防護するようにしている。このことにより、専用の部品を用いることなく針状電極２を防護することができるので、結果装置の薄型化を図ることができる。 As described above, when the parallel electrode 3 is composed of an electrode plate having only a plane parallel to the wind direction, the tip of the needle electrode 2 is exposed from the downstream side. The pointed portion of the needle-like electrode 2 has a shape with a sharp tip at the tip, and is easily deformed when touched by a foreign object. For this reason, the tip of the needle electrode 2 is protected by making the dust collection filter 5 or the storage frame 6 disposed on the downstream side of the needle electrode 2 of the electric dust collection unit into a mesh shape. As a result, the needle-like electrode 2 can be protected without using a dedicated component, so that the resulting device can be made thinner.

なお、集塵フィルター５と収納枠６は一体成型し、収納枠６を平行電極３に接触させてもよい。そうすることにより、収納枠６自体が集塵フィルターの機能を持つことが可能になる。その際には、部品点数が少なくなることによって薄型化でき、さらには組立工数の削減、コストダウンが出来る。 Note that the dust collection filter 5 and the storage frame 6 may be integrally formed, and the storage frame 6 may be brought into contact with the parallel electrodes 3. By doing so, the storage frame 6 itself can have the function of a dust collection filter. In that case, the number of parts can be reduced, so that the thickness can be reduced, and further, the number of assembly steps can be reduced and the cost can be reduced.

また、針状電極２の尖先部を平行電極３の電極板の略中間に位置させることにより、電気集塵ユニット内に形成される電界を略均一に分布させることができる。 Further, by positioning the pointed portion of the needle-like electrode 2 approximately in the middle of the electrode plate of the parallel electrode 3, the electric field formed in the electric dust collection unit can be distributed substantially uniformly.

（実施の形態２）
本発明の第２の実施の形態を図３〜４を用いて説明する。第１の実施の形態と同じ構成のものについては同じ符号を付し、詳細な説明を省略する。 (Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図３〜４において、平行電極３は、複数の電極板３ａを接続板３ｂによって接続している。電極板３ａと接続板３ｂの接続箇所には補強のため補強部３ｃを設ける。補強部３ｃは、補強部３ｃと針状電極２の尖先部との最短距離となる点（Ａ）が補強部３ｃの辺部にあたるような形状を有している。さらに補強部３ｃと針状電極２の尖先部との最短距離Ｌ２と、電極板３ａと針状電極２の尖先部との最短距離Ｌ１との関係を、Ｌ１≦Ｌ２となるように接続板３ｂの位置、及び補強部３ｃの形状を調整する。 3 to 4, the parallel electrode 3 has a plurality of electrode plates 3a connected by a connection plate 3b. A reinforcing portion 3c is provided for reinforcement at the connection portion between the electrode plate 3a and the connecting plate 3b. The reinforcing part 3c has a shape such that the point (A) that is the shortest distance between the reinforcing part 3c and the tip of the needle-like electrode 2 corresponds to the side part of the reinforcing part 3c. Further, the relationship between the shortest distance L2 between the reinforcing portion 3c and the tip of the needle electrode 2 and the shortest distance L1 between the electrode plate 3a and the tip of the needle electrode 2 are connected so that L1 ≦ L2. The position of the plate 3b and the shape of the reinforcing portion 3c are adjusted.

上記の構成により、電極板３ａを接続板３ｂで接続することによって、平行電極３は一体で作ることが可能になり、電気集塵ユニットの薄型化、組立の簡略化を図ることができる。また、接続板３ｂと電極板３ａを接続する箇所に補強部３ｃを設けることにより、電極板３ａと接続板３ｂの接続強度を確保することが可能になる。さらに、補強部３ｃと針状電極２の尖先部との最短距離Ｌ２を電極板３ａとの最短距離Ｌ１より大きくすることによって沿面距離は最短距離Ｌ１に支配されることになり、電気集塵ユニット内に形成される電界を均一に分布させることが可能になる。 With the above configuration, by connecting the electrode plate 3a with the connection plate 3b, the parallel electrode 3 can be made integrally, and the electric dust collection unit can be made thinner and the assembly can be simplified. Moreover, it becomes possible to ensure the connection strength of the electrode plate 3a and the connection plate 3b by providing the reinforcement part 3c in the location which connects the connection plate 3b and the electrode plate 3a. Further, the creepage distance is controlled by the shortest distance L1 by making the shortest distance L2 between the reinforcing portion 3c and the tip of the needle-like electrode 2 larger than the shortest distance L1 with the electrode plate 3a. It becomes possible to uniformly distribute the electric field formed in the unit.

（実施の形態３）
本発明の第３の実施の形態を図５〜６を用いて説明する。第１〜２の実施の形態と同じ構成のものについては同じ符号を付し、詳細な説明を省略する。 (Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. The same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

図５〜６に示すように、空気調和機（図示せず）などの空気流路に設けられる電気集塵ユニットは、格子状に成形した前面パネル１１と、高電圧を印可させることで放電機能を有する複数の針状電極１２と、針状電極１２と平行に設けた平行電極１３と、電気集塵ユニットの下流側に設けられた集塵フィルター１５と、集塵フィルター１５を固定する収納枠１６とで構成される。 As shown in FIGS. 5 to 6, the electric dust collection unit provided in the air flow path of an air conditioner (not shown) or the like has a front panel 11 formed in a lattice shape and a discharge function by applying a high voltage. A plurality of needle electrodes 12, a parallel electrode 13 provided in parallel with the needle electrodes 12, a dust collection filter 15 provided on the downstream side of the electrostatic dust collection unit, and a storage frame for fixing the dust collection filter 15 16.

針状電極１２は、複数の電極板に先端が尖った尖先部を持ち、その尖先部は風向と直角な方向で、向かい合った電極板同士の尖先部が対向するように形成する。平行電極１３は、針状電極１２の電極板の略中間に針状電極１２の尖先部の向いた方向に直角（風向と平行）に配置する。 The needle electrode 12 has a pointed portion with a pointed tip on a plurality of electrode plates, and the pointed portion is formed in a direction perpendicular to the wind direction so that the pointed portions of the facing electrode plates face each other. The parallel electrode 13 is arranged at a right angle (parallel to the wind direction) in the direction in which the tip portion of the needle electrode 12 faces approximately in the middle of the electrode plate of the needle electrode 12.

上記構成により、針状電極１２の尖先部は風向と直角に形成するため、沿面距離Ｌを風向に対して直角に取ることが可能になり、装置の厚さをとらなくてよく、薄型化を実現できる。 With the above configuration, since the pointed portion of the needle electrode 12 is formed at right angles to the wind direction, the creepage distance L can be taken at right angles to the wind direction, so that the thickness of the device does not need to be reduced and the thickness is reduced. Can be realized.

（実施の形態４）
本発明の第４の実施の形態を図７〜８を用いて説明する。第１〜３の実施の形態と同じ構成のものについては同じ符号を付し、詳細な説明を省略する。 (Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIGS. The same components as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

図７〜８に示すように、平行電極３の端部には、丸穴３ｄを設け、前面パネル１には丸ピン１ａを設け、さらに収納枠６には丸穴６ａを設ける。平行電極３には、集塵フィルター５の枠３ｅを設けてある。 As shown in FIGS. 7 to 8, the end of the parallel electrode 3 is provided with a round hole 3 d, the front panel 1 is provided with a round pin 1 a, and the storage frame 6 is provided with a round hole 6 a. The parallel electrode 3 is provided with a frame 3 e of the dust collection filter 5.

上記構成により、平行電極３、集塵フィルター５を前面パネル１の裏側（風下側）に装着するには、平行電極３の丸穴３ｄに前面パネル１の丸ピン１ａを嵌め込む。さらに平行電極３の風下側に集塵フィルター５を枠３ｅに接するように装着する。集塵フィルター５を固定するため、収納枠６を前面パネル１に嵌合させる。その際、収納枠６の丸穴６ａに前面パネル１の丸ピン１ａを嵌め込んで固定する。このことにより、平行電極３を金属ネジなどを用いずに簡単に固定することができる。また、金属ネジを用いて電極を固定すると、ネジ部分が電位となって針状電極との距離が近い部分ができる。樹脂製の丸ピン１ａによって固定することにより電位の突出部分がなくなり、沿面距離に影響を及ぼさない。 With the above configuration, in order to attach the parallel electrode 3 and the dust collecting filter 5 to the back side (leeward side) of the front panel 1, the round pin 1 a of the front panel 1 is fitted into the round hole 3 d of the parallel electrode 3. Further, the dust collection filter 5 is mounted on the leeward side of the parallel electrode 3 so as to be in contact with the frame 3e. In order to fix the dust collection filter 5, the storage frame 6 is fitted to the front panel 1. At that time, the round pin 1 a of the front panel 1 is fitted into the round hole 6 a of the storage frame 6 and fixed. Thereby, the parallel electrode 3 can be easily fixed without using a metal screw or the like. Further, when the electrode is fixed using a metal screw, the screw portion becomes a potential and a portion close to the needle electrode is formed. By fixing with the resin round pin 1a, there is no protruding portion of potential, and the creepage distance is not affected.

さらに、平行電極３、集塵フィルター５を収納枠６によって同時に固定するため、簡単に組立ができる。 Furthermore, since the parallel electrode 3 and the dust collection filter 5 are simultaneously fixed by the storage frame 6, assembly is easy.

また、集塵フィルター５は平行電極３の枠３ｅによって電極との接触面積が確保されている。そのため、集塵フィルター５は充分に帯電することができ、集塵し易くなる効果がある。 Further, the dust collection filter 5 has a contact area with the electrode secured by the frame 3 e of the parallel electrode 3. Therefore, the dust collection filter 5 can be sufficiently charged and has an effect of facilitating dust collection.

（実施の形態５）
本発明の第５の実施の形態を図９を用いて説明する。第１〜４の実施の形態と同じ構成のものについては同じ符号を付し、詳細な説明を省略する。 (Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

図９に示すように、前面パネル１の短手方向の桟の裏側（風下側）には、溝１ｂが数箇所に設けてある。平行電極３はこの溝１ｂに嵌め込んでいって前面パネル１に固定する。 As shown in FIG. 9, grooves 1 b are provided at several locations on the back side (leeward side) of the crosspiece in the short direction of the front panel 1. The parallel electrode 3 is fitted in the groove 1b and fixed to the front panel 1.

電極板が変形すると、電圧を印加した際にできる電界に場所によって強弱ができる。そのため変形した電極板では効率的な集塵ができない。平行電極３は薄板で構成されているため、変形し易いが、この溝１ｂに固定することによって変形を防ぎ、確実に固定できる効果がある。 When the electrode plate is deformed, the strength of the electric field generated when a voltage is applied can be changed depending on the location. Therefore, efficient dust collection cannot be performed with the deformed electrode plate. Since the parallel electrode 3 is formed of a thin plate, it is easily deformed. However, by fixing the parallel electrode 3 in the groove 1b, there is an effect that the deformation can be prevented and fixed reliably.

なお、溝１ｂの数は電極板の変形を防ぐ程度の数でよい。 The number of the grooves 1b may be a number that prevents deformation of the electrode plate.

薄型で集塵できることを生かし、小型の空気清浄機やマイナスイオン発生器等の用途にも適用できる。 Taking advantage of being thin and capable of collecting dust, it can also be applied to applications such as small air purifiers and negative ion generators.

本発明の実施の形態１の電気集塵ユニットの電極の構成を示す断面図Sectional drawing which shows the structure of the electrode of the electric dust collection unit of Embodiment 1 of this invention 同、電気集塵ユニットの裏面を示す斜視図The perspective view which shows the back surface of an electrostatic dust collection unit same as the above 本発明の実施の形態２の平行電極を示す斜視図The perspective view which shows the parallel electrode of Embodiment 2 of this invention. 同、実施の形態２の平行電極と針状電極を装着したときの位置関係を示す斜視図The perspective view which shows the positional relationship when mounting | wearing with the parallel electrode and needle-shaped electrode of Embodiment 2 same as the above 本発明の実施の形態３の電気集塵ユニットの電極の構成を示す断面図Sectional drawing which shows the structure of the electrode of the electric dust collection unit of Embodiment 3 of this invention 同、電気集塵ユニットの構成を示す斜視図The perspective view which shows the structure of an electric dust collection unit same as the above 本発明の実施の形態４の電気集塵ユニットの構成を示す斜視図The perspective view which shows the structure of the electric dust collection unit of Embodiment 4 of this invention. 同、組立状態を示す斜視図The perspective view which shows an assembly state similarly 本発明の実施の形態５の電気集塵ユニットの前面パネルの構成を示す斜視図The perspective view which shows the structure of the front panel of the electric dust collection unit of Embodiment 5 of this invention. 従来の電気集塵ユニットの構成を示す断面図Sectional drawing which shows the structure of the conventional electric dust collection unit

符号の説明Explanation of symbols

１前面パネル
１ａ丸ピン
１ｂ溝
２針状電極
３平行電極
３ａ電極板
３ｂ接続板
３ｃ補強部
３ｄ丸穴
３ｅ枠
５集塵フィルター
６収納枠
６ａ丸穴
１１前面パネル
１２針状電極
１３平行電極
１５集塵フィルター
１６収納枠 DESCRIPTION OF SYMBOLS 1 Front panel 1a Round pin 1b Groove 2 Needle electrode 3 Parallel electrode 3a Electrode plate 3b Connection plate 3c Reinforcement part 3d Round hole 3e Frame 5 Dust collection filter 6 Storage frame 6a Round hole 11 Front panel 12 Needle electrode 13 Parallel electrode 15 Dust collection filter 16 Storage frame

Claims

複数の尖先部を持つ針状電極と、この針状電極を取り付ける格子状の前面パネルと、前記針状電極と平行に設けた平行電極と、集塵フィルターと、この平行電極と集塵フィルターを収納する収納枠とで構成される電気集塵ユニットにおいて、前記平行電極は、風向と平行に設けられた電極板とする電気集塵ユニット。 Needle-like electrodes having a plurality of pointed portions, a grid-like front panel for attaching the needle-like electrodes, parallel electrodes provided in parallel with the needle-like electrodes, a dust collection filter, and the parallel electrodes and the dust collection filter An electric dust collection unit including a storage frame for storing the electric dust collection unit, wherein the parallel electrode is an electrode plate provided in parallel with the wind direction.

前記収納枠または前記集塵フィルターのどちらか一方または両方の形状が網目状であることを特徴とする請求項１記載の電気集塵ユニット。 The electric dust collection unit according to claim 1, wherein one or both of the storage frame and the dust collection filter have a mesh shape.

前記針状電極の尖先部は下流方向に先端を向け、前記平行電極は複数の平行に設置された電極板で構成され、前記針状電極は前記平行電極の電極板の略中間に位置させたことを特徴とする請求項１または２記載の電気集塵ユニット。 The pointed portion of the needle electrode is pointed in the downstream direction, the parallel electrode is composed of a plurality of parallel electrode plates, and the needle electrode is positioned approximately in the middle of the electrode plate of the parallel electrode. The electric dust collection unit according to claim 1 or 2, characterized in that.

前記平行電極は、複数の電極板と、それぞれの電極板を接続する接続部と、電極板と接続板を接続する補強部によって構成され、針状電極の尖先部先端と補強部の最短距離が補強部の辺との距離にあたり、その針状電極の尖先部先端と補強部の最短距離Ｌ１と電極板と針状電極の尖先部先端との最短距離Ｌ２との関係が、Ｌ１≦Ｌ２となることを特徴とする請求項３記載の電気集塵ユニット。 The parallel electrode is composed of a plurality of electrode plates, a connection portion that connects each electrode plate, and a reinforcement portion that connects the electrode plate and the connection plate, and the shortest distance between the tip end of the needle electrode and the reinforcement portion Is the distance from the side of the reinforcing portion, and the relationship between the tip of the tip of the needle electrode and the shortest distance L1 of the reinforcing portion and the shortest distance L2 of the electrode plate and the tip of the tip of the needle electrode is L1 ≦ The electric dust collection unit according to claim 3, wherein the electrostatic dust collection unit is L2.

前記針状電極の尖先部は、風の流れる方向と垂直な方向に先端を向け、前記平行電極は針状電極の尖先部の先端が向いた方向と垂直面に設けられたことを特徴とする請求項１または２記載の電気集塵ユニット。 The pointed portion of the needle-shaped electrode has its tip pointed in a direction perpendicular to the direction in which the wind flows, and the parallel electrode is provided on a plane perpendicular to the direction in which the tip of the pointed portion of the needle-shaped electrode is directed. The electric dust collection unit according to claim 1 or 2.

請求項５記載の針状電極は複数の電極板で構成され、それらの電極板は平行に設置され、かつ、尖先部は針状電極の他の電極板の尖先部と対向するように先端を向けたことを特徴とする電気集塵ユニット。 The needle-shaped electrode according to claim 5 is composed of a plurality of electrode plates, the electrode plates are arranged in parallel, and the pointed portion is opposed to the pointed portion of the other electrode plate of the needle-shaped electrode. Electric dust collection unit characterized by having its tip pointed.

前記平行電極と集塵フィルターを同時に収納枠で抑えて固定することを特徴とする請求項１〜６いずれかに記載の電気集塵ユニット。 The electric dust collection unit according to claim 1, wherein the parallel electrode and the dust collection filter are simultaneously held and fixed by a storage frame.

前記前面パネルに丸ピンを設け、前記平行電極に丸穴を設け、前記収納枠に押え穴を設け、平行電極の丸穴と収納枠の押え穴に前面パネルに設けた丸ピンを嵌合させることを特徴とする請求項７記載の電気集塵ユニット。 A round pin is provided on the front panel, a round hole is provided in the parallel electrode, a holding hole is provided in the storage frame, and a round pin provided on the front panel is fitted into the circular hole of the parallel electrode and the holding hole of the storage frame. The electric dust collection unit according to claim 7.

前記前面パネルの下流側に前記平行電極を固定する溝を設けたことを特徴とする請求項１〜８いずれかに記載の電気集塵ユニット。 The electric dust collection unit according to claim 1, wherein a groove for fixing the parallel electrode is provided on the downstream side of the front panel.

前記平行電極に集塵フィルターを固定する枠を設けたことを特徴とする請求項１〜９いずれかに記載の電気集塵ユニット。 The electric dust collection unit according to claim 1, wherein a frame for fixing a dust collection filter is provided on the parallel electrode.