JP7110660B2

JP7110660B2 - Dust collector of electric dust collector

Info

Publication number: JP7110660B2
Application number: JP2018061669A
Authority: JP
Inventors: 拓也佐藤; 博則青木
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 2018-03-28
Filing date: 2018-03-28
Publication date: 2022-08-02
Anticipated expiration: 2038-03-28
Also published as: JP2019171278A

Description

本発明は、電気集塵機の集塵部に関する。 TECHNICAL FIELD The present invention relates to a dust collector of an electric dust collector.

室内の空気を吸引し、吸引した空気から塵埃を除去する電気集塵機のなかには、塵埃に電荷を帯電させる荷電部と、帯電させた塵埃を捕集する集塵部とを備えたものがある。集塵部としては、平板状の高圧電極と平板状の接地電極とを、互いに平行となるよう交互に配置した構成のものが知られている。 2. Description of the Related Art Among electric dust collectors for sucking indoor air and removing dust from the sucked air, there are some that are provided with a charging section that charges dust and a dust collecting section that collects the charged dust. As a dust collection section, a configuration in which flat high-voltage electrodes and flat ground electrodes are alternately arranged in parallel with each other is known.

かかる電気集塵機の集塵部の一例として、板状に形成された複数の高圧電極とそれらの端部を連結するリブ部とを樹脂でブロック状に一体成形して高圧電極部を構成したものがある。そして、この高圧電極部のリブ部に、コ字状に形成した導電性の給電部材を嵌め込み、締結部材を使用することなく高圧電極全体に安定した給電を行うことができるようにしている（例えば、特許文献１を参照）。 As an example of the dust collecting portion of such an electric dust collector, a plurality of plate-shaped high-voltage electrodes and rib portions connecting the ends thereof are integrally molded with a resin block to form a high-voltage electrode portion. be. Then, a U-shaped conductive power supply member is fitted into the rib of the high voltage electrode so that stable power can be supplied to the entire high voltage electrode without using a fastening member (for example, , see Patent Document 1).

特開２０１０－１３１５０５号公報JP 2010-131505 A

しかしながら、このような特許文献１にあっては、コ字状の給電部材は、弾性を有する板金を折り曲げて形成されている。したがって、給電部材は、折り曲げられる以前の平板状態に戻る方向への変形が生じ易い。そのため、給電部材と高圧電極部との接触状態が変化することにより、集塵性能が不安定となるおそれがある。 However, in Patent Document 1, the U-shaped power supply member is formed by bending an elastic sheet metal. Therefore, the power supply member is likely to be deformed in the direction of returning to the flat plate state before being bent. As a result, the contact state between the power supply member and the high-voltage electrode portion may change, which may destabilize the dust collection performance.

開示の技術は、上記に鑑みてなされたものであって、高圧電極部と、これに給電する給電部材との間の接触状態の変化を抑制することのできる電気集塵機の集塵部を提供することを目的とする。 The disclosed technology has been made in view of the above, and provides a dust collector of an electric dust collector that can suppress a change in the contact state between a high-voltage electrode and a power supply member that supplies power thereto. for the purpose.

本願の開示する電気集塵機の集塵部の一態様は、平板状に形成された複数の高圧電極と、複数の高圧電極の端部を連結する連結部と、連結部に接続されて高圧電極に給電する給電部材と、を備える。連結部は、高圧電極に対して直交方向に溝部が形成される。給電部材は、溝部に設けられた挟持部で挟持される。挟持部は、溝部の対向する内側面それぞれに形成された突出部を有している。突出部は、給電部材の一方の側面に当接する第１の突出部と、給電部材の他方の側面に当接する第２の突出部とを有している。給電部材は、対向する第１の突出部と第２の突出部とで挟持されている。第１の突出部と第２の突出部とは、高圧電極の配列方向において互いにずれた位置に設けられる。 One aspect of the dust collection unit of the electric dust collector disclosed in the present application includes a plurality of high-voltage electrodes formed in a flat plate shape, a connecting portion that connects ends of the plurality of high-voltage electrodes, and a high-voltage electrode connected to the connecting portion. and a power supply member that supplies power. The connecting portion has a groove formed in a direction perpendicular to the high-voltage electrode. The power supply member is held by a holding portion provided in the groove. The clamping portion has a projection formed on each of the opposing inner side surfaces of the groove. The protrusion has a first protrusion that contacts one side surface of the power supply member and a second protrusion that contacts the other side surface of the power supply member. The power supply member is sandwiched between the first projecting portion and the second projecting portion that face each other. The first projecting portion and the second projecting portion are provided at positions shifted from each other in the arrangement direction of the high-voltage electrodes.

本願の開示する電気集塵機の集塵部の一態様によれば、高圧電極と、これに給電する給電部材との間の接触状態の変化を抑制し、安定した集塵性能を維持することができる。 According to one aspect of the dust collection unit of the electric dust collector disclosed in the present application, it is possible to suppress changes in the contact state between the high voltage electrode and the power supply member that supplies power to the high voltage electrode, thereby maintaining stable dust collection performance. .

図１は、実施例の空気清浄機の概略構成図である。FIG. 1 is a schematic configuration diagram of an air cleaner of an embodiment. 図２は、実施例の電気集塵機の集塵部を示す斜視図である。FIG. 2 is a perspective view showing the dust collection part of the electric dust collector of the embodiment. 図３は、実施例の電気集塵機の集塵部の集塵部を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a dust collecting portion of the electric dust collector of the embodiment. 図４は、実施例の電気集塵機の集塵部の高圧電極部を示す斜視図である。FIG. 4 is a perspective view showing a high-voltage electrode portion of the dust collecting portion of the electric dust collector of the embodiment. 図５は、実施例の電気集塵機の集塵部の高圧電極部の平面図である。FIG. 5 is a plan view of a high-voltage electrode portion of the dust collecting portion of the electrostatic precipitator of the embodiment. 図６は、実施例における高圧電極部の連結部を示す斜視図である。FIG. 6 is a perspective view showing the connecting portion of the high-voltage electrode portion in the embodiment. 図７は、実施例における給電部材が連結部の溝部に保持される一態様を説明するための模式図である。FIG. 7 is a schematic diagram for explaining one mode in which the power supply member is held in the groove of the connecting portion in the embodiment. 図８Ａは、実施例における連結部の溝部を示す平面図である。FIG. 8A is a plan view showing a groove portion of a connecting portion in an example. 図８Ｂは、実施例における給電部材が連結部の溝部に保持された状態を示す平面図である。FIG. 8B is a plan view showing a state in which the power supply member is held in the groove of the connecting portion in the example. 図９は、実施例の集塵部の平面図である。FIG. 9 is a plan view of the dust collection part of the embodiment. 図１０は、図９におけるＡ部拡大図である。10 is an enlarged view of part A in FIG. 9. FIG. 図１１は、実施例における導通部配置部の構造を示すための図１０におけるＸＩ－ＸＩ断面図である。FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 10 for showing the structure of the conductive portion arrangement portion in the example. 図１２は、図１１における導通部配置部と給電部材の導通部との位置関係を示すための斜視図である。FIG. 12 is a perspective view showing the positional relationship between the conductive portion arrangement portion and the conductive portion of the power supply member in FIG.

以下に、本願の開示する電気集塵機の集塵部の実施例を図面に基づいて詳細に説明する。なお、以下の実施例によって、本願の開示する電気集塵機の集塵部が限定されるものではない。また、以下の説明による構成要素には、当業者が置換可能かつ容易なもの、或いは実質的同一のもの、いわゆる均等の範囲のものが含まれる。 Hereinafter, embodiments of the dust collector of the electric dust collector disclosed in the present application will be described in detail based on the drawings. It should be noted that the dust collector of the electric dust collector disclosed in the present application is not limited to the following examples. In addition, the constituent elements described below include those that can be easily replaced by those skilled in the art, or those that are substantially the same, that is, those within the so-called equivalent range.

まず、実施例の電気集塵機の集塵部を備える空気清浄機の概略について説明する。図１は、実施例の空気清浄機１の概略構成図である。一実施例である空気清浄機１は、図１に示すように、空気を清浄化するための装置類を収納するとともに、室内の空気を吸引する吸込口１１と、清浄化された空気を室内に吹き出す吹出口１２とが形成された筐体１０を備える。筐体１０は、合成樹脂材で成形された複数のパネルによって略直方体状に形成されている。 First, an outline of an air cleaner provided with the dust collection part of the electric dust collector of the embodiment will be described. FIG. 1 is a schematic configuration diagram of an air cleaner 1 of an embodiment. As shown in FIG. 1, an air purifier 1 which is an embodiment contains devices for purifying the air, a suction port 11 for sucking indoor air, and a It comprises a housing 10 formed with an air outlet 12 for blowing out air. The housing 10 is formed in a substantially rectangular parallelepiped shape by a plurality of panels molded from a synthetic resin material.

筐体１０内には、吸引された空気から大きな塵埃を除去するプレフィルタ１４と、プレフィルタ１４を通過した空気中の塵埃を電気的に集塵する複数の電気集塵機２と、電気集塵機２を通過した空気を脱臭処理する脱臭フィルタ５とが設けられる。 A pre-filter 14 for removing large dust from the sucked air, a plurality of electric dust collectors 2 for electrically collecting dust in the air that has passed through the pre-filter 14, and the electric dust collector 2 are contained in the housing 10. A deodorizing filter 5 for deodorizing the passing air is provided.

プレフィルタ１４は、例えば糸状のＰＥＴ材を編みこんだ網目構造を有し、図示しない樹脂枠で保持されており、筐体１０の内部に吸い込まれた空気に含まれている比較的大きな塵埃を捕集する。脱臭フィルタ５は、触媒フィルタを有し、プレフィルタ１４および電気集塵機２で塵埃が除かれた後、触媒フィルタで例えばアンモニアやメチルメルカプタン等の臭気成分やホルムアルデヒド等の有害成分を取り除く脱臭処理を行う。なお、触媒フィルタは、加熱により臭気の吸着機能が再生できる加熱再生型の構造を有することが好ましい。 The pre-filter 14 has a mesh structure in which, for example, thread-like PET material is woven, is held by a resin frame (not shown), and removes relatively large dust contained in the air sucked into the housing 10. collect. The deodorizing filter 5 has a catalytic filter, and after dust is removed by the pre-filter 14 and the electric dust collector 2, the catalytic filter performs deodorizing treatment to remove odorous components such as ammonia and methyl mercaptan and harmful components such as formaldehyde. . It is preferable that the catalyst filter has a heat regeneration type structure that can regenerate the odor adsorption function by heating.

電気集塵機２は、本実施例においては筐体１０内に３つ上下に配置されている。各電気集塵機２は、後に詳述する荷電部３と集塵部４とを有し、荷電部３には、荷電部３の電極に電力を供給する荷電部用高圧電源３０が設けられる。 Three electric dust collectors 2 are vertically arranged in the housing 10 in this embodiment. Each electric dust collector 2 has a charge section 3 and a dust collection section 4, which will be described in detail later.

また、筐体１０内には、脱臭フィルタ５の下流側に配置されるファン６と、ファン６を回転させるモータ６１と、電気集塵機２やモータ６１を制御する制御部を有する電源制御基板７とが設けられる。さらに、筐体１０内には、電気集塵機２の集塵部４に電力を供給する集塵部用高圧電源４０と、吸込口１１から吸引された空気の塵埃濃度を検出する埃センサ１３とが設けられる。なお、筐体１０には、運転開始操作、運転停止操作、風量設定などを行う操作部（図示せず）と接続する操作表示基板１５が設けられる。なお、操作部は、筐体１０の上面部に設けられており、電源ボタンや運転モード切り換えボタン等の空気清浄機１を操作するボタンが配置されるとともに、空気清浄機１の運転状態や埃センサ１３等における検出結果を表示する表示部が配置される。 In the housing 10, a fan 6 arranged downstream of the deodorizing filter 5, a motor 61 for rotating the fan 6, and a power supply control board 7 having a control unit for controlling the electric dust collector 2 and the motor 61. is provided. Further, in the housing 10, there are a high-voltage power supply 40 for the dust collecting section that supplies electric power to the dust collecting section 4 of the electric dust collector 2, and a dust sensor 13 that detects the dust concentration of the air sucked from the suction port 11. be provided. The housing 10 is provided with an operation display board 15 connected to an operation unit (not shown) for performing operation start operation, operation stop operation, air volume setting, and the like. The operation unit is provided on the upper surface of the housing 10, and has buttons for operating the air cleaner 1 such as a power button and an operation mode switching button. A display unit for displaying the detection result of the sensor 13 or the like is arranged.

こうして、図中の矢印ｆで示されるように、吸込口１１から吸引された室内の空気は、空気中の塵埃がプレフィルタ１４と電気集塵機２とにより捕集されることで除塵される。そして、清浄化された清浄空気が吹出口１２から室内に吹き出される。特に、本実施例に係る空気清浄機１は、脱臭フィルタ５を備えているため、脱臭効果も奏する。 Thus, as indicated by the arrow f in the figure, the indoor air sucked from the suction port 11 is dust-removed by collecting dust in the air with the pre-filter 14 and the electric dust collector 2 . Then, the cleaned air is blown into the room from the outlet 12. - 特許庁In particular, since the air cleaner 1 according to the present embodiment includes the deodorizing filter 5, it also has a deodorizing effect.

ここで、電気集塵機２の集塵作用について簡単に説明する。電気集塵機２の荷電部３を構成する荷電部放電電極（不図示）に予め設定された正極の高電圧（例えば＋４．７ｋＶ）を印加し、荷電部対向電極４１２（図２参照）を荷電部用高圧電源３０の接地極（アース）に接続することで、荷電部放電電極と荷電部対向電極４１２との間でコロナ放電が起こる。すると、荷電部放電電極と荷電部対向電極４１２との間には、電子と空気分子が正に帯電したイオンが満たされる。そして、正イオンで満たされた空間を塵埃が通過する際に、その通過時間と荷電部放電電極と荷電部対向電極４１２とで作られる電界の強さに応じて、イオンと塵埃の衝突による電荷の移動が起こり、塵埃に正の電荷が帯電する。 Here, the dust collection action of the electric dust collector 2 will be briefly described. A preset positive high voltage (for example, +4.7 kV) is applied to the charging section discharge electrode (not shown) constituting the charging section 3 of the electrostatic precipitator 2, and the charging section counter electrode 412 (see FIG. 2) is connected to the charging section. A corona discharge occurs between the charging section discharge electrode and the charging section counter electrode 412 by connecting to the ground electrode (earth) of the high voltage power supply 30 . Then, the space between the charge section discharge electrode and the charge section counter electrode 412 is filled with positively charged ions of electrons and air molecules. When the dust passes through the space filled with positive ions, the electric charge generated by the collision between the ions and the dust depends on the passage time and the strength of the electric field created by the charging section discharge electrode and the charging section counter electrode 412 . movement occurs and the dust is positively charged.

一方、集塵部４の高圧電極部４２を構成する高圧電極４２１（図３参照）に予め設定された正極の高電圧（例えば＋４．７ｋＶ）を印加し、集塵部４の集塵電極部４３を構成する接地電極４３１（図３参照）を集塵部用高圧電源４０の接地極（アース）に接続すると、両電極間に所定の静電界が形成される。荷電部３で正に帯電した塵埃は、集塵部４に移動すると、同極性の高圧電極部４２の高圧電極４２１から反発する方向に斥力を受けるとともに、静電界により塵埃と反対極性の集塵電極部４３の接地電極４３１に吸引される方向に力を受け、集塵部４の接地電極４３１に到達する。そして、接地電極４３１に塵埃が付着することで、塵埃が捕集される。さらに、正に帯電されていた塵埃が接地電極４３１に触れると、塵埃に帯電していた電荷がアースに流される。そのため、帯電した塵埃の付着により集塵電極部４３の接地電極４３１が正極に帯電してしまうことが防止され、捕集力の低下が抑制されている。 On the other hand, a preset positive high voltage (for example, +4.7 kV) is applied to the high-voltage electrode 421 (see FIG. 3) constituting the high-voltage electrode portion 42 of the dust collection portion 4, and the dust collection electrode portion of the dust collection portion 4 is When the ground electrode 431 (see FIG. 3) constituting the dust collector 43 is connected to the ground electrode (earth) of the high voltage power supply 40 for the dust collecting section, a predetermined electrostatic field is formed between both electrodes. When the dust positively charged in the charging section 3 moves to the dust collection section 4, it receives a repulsive force in a repulsive direction from the high voltage electrode 421 of the high voltage electrode section 42 having the same polarity, and collects dust having a polarity opposite to that of the dust by an electrostatic field. It receives a force in the direction of being attracted to the ground electrode 431 of the electrode portion 43 and reaches the ground electrode 431 of the dust collection portion 4 . As dust adheres to the ground electrode 431, the dust is collected. Furthermore, when the positively charged dust contacts the ground electrode 431, the electric charge of the dust is discharged to the ground. Therefore, it is possible to prevent the ground electrode 431 of the dust collection electrode portion 43 from being positively charged due to adhesion of charged dust, thereby suppressing a decrease in the collection power.

塵埃の捕集率を高める方法のひとつは、安定した集塵能力を維持することであり、そのために、電気集塵機２には、集塵部４の高圧電極部４２を構成する高圧電極４２１（図３参照）に安定した給電がなされる構成が求められる。 One of the methods for increasing the dust collection rate is to maintain a stable dust collection capability. 3) is required to provide a stable power supply.

以下、実施例に係る電気集塵機２の集塵部４について、図面を参照しながら具体的に説明する。図２は、実施例の電気集塵機２を示す斜視図、図３は、電気集塵機２の集塵部４を示す分解斜視図である。図２に示すように、電気集塵機２は、それぞれ複数の電極を有する荷電部３と集塵部４とが、空気の流れる方向（矢印ｆを参照）に対し、荷電部３を風上側として重ね合わせた状態に組み合わされて構成されている。なお、荷電部３の風上側には空気流入孔が形成された電極保護パネル２００が配設される。 Hereinafter, the dust collector 4 of the electric dust collector 2 according to the embodiment will be specifically described with reference to the drawings. FIG. 2 is a perspective view showing the electric dust collector 2 of the embodiment, and FIG. 3 is an exploded perspective view showing the dust collection section 4 of the electric dust collector 2. As shown in FIG. As shown in FIG. 2, the electrostatic precipitator 2 includes a charging section 3 having a plurality of electrodes and a dust collecting section 4 stacked with the charging section 3 on the windward side with respect to the direction of air flow (see arrow f). It is configured by being combined in a combined state. An electrode protection panel 200 having an air inlet hole is disposed on the windward side of the charging section 3 .

荷電部３は、複数の荷電部放電電極（不図示）と、かかる荷電部放電電極とは異なる極性をもつ複数の荷電部対向電極４１２とが、荷電部枠３１に保持されている。複数の荷電部放電電極と荷電部対向電極４１２とは、所定の間隔をあけて交互に配置されている。荷電部放電電極は、ワイヤやニードルなど、細く又は鋭利な形状であって、図１に示した荷電部用高圧電源３０と接続する。荷電部対向電極４１２は、平板状に形成され、アースに接続される。なお、荷電部対向電極４１２は、一枚の板金に打ち抜き加工および折り曲げ加工などを施して一体的に成形される。そして、荷電部３の風下側には、図２に示すように、集塵部４が荷電部３と重なり合った状態で配置される。 In the charging section 3 , a plurality of charging section discharge electrodes (not shown) and a plurality of charging section counter electrodes 412 having polarities different from the charging section discharge electrodes are held by the charging section frame 31 . The plurality of charge section discharge electrodes and the charge section counter electrodes 412 are alternately arranged at predetermined intervals. The charged-portion discharge electrode has a thin or sharp shape such as a wire or a needle, and is connected to the charged-portion high-voltage power supply 30 shown in FIG. The charging unit counter electrode 412 is formed in a flat plate shape and connected to the ground. It should be noted that the charging portion counter electrode 412 is formed integrally by punching and bending a single sheet metal. On the leeward side of the charging section 3, the dust collecting section 4 is arranged so as to overlap the charging section 3, as shown in FIG.

集塵部４は、図３に示すように、荷電部３で荷電された塵埃を捕集する電極部４５と、電極部４５を収容する枠部４１とを備えている。枠部４１は、電極部４５の外周を囲む、断面が矩形の筒状に形成されている。電極部４５は、枠部４１に保持される高圧電極部４２と、これも枠部４１に保持される集塵電極部４３と、高圧電極部４２に装着される給電部材４４とを備える。高圧電極部４２が備える高圧電極４２１と、集塵電極部４３が備える接地電極４３１とは、集塵部用高圧電源４０の異なる極性に電気的に接続される。 As shown in FIG. 3 , the dust collecting section 4 includes an electrode section 45 that collects dust charged by the charging section 3 and a frame section 41 that accommodates the electrode section 45 . The frame portion 41 is formed in a cylindrical shape having a rectangular cross section and surrounding the outer periphery of the electrode portion 45 . The electrode portion 45 includes a high-voltage electrode portion 42 held by the frame portion 41 , a dust collection electrode portion 43 also held by the frame portion 41 , and a power supply member 44 attached to the high-voltage electrode portion 42 . The high voltage electrode 421 provided in the high voltage electrode portion 42 and the ground electrode 431 provided in the dust collection electrode portion 43 are electrically connected to different polarities of the high voltage power supply 40 for the dust collection portion.

矩形状の枠部４１は、絶縁性の合成樹脂により形成されており、長辺をなす第１側壁４１ａ，４１ａおよび短辺をなす第２側壁４１ｂ，４１ｂを有する。枠部４１は、例えばＰＰＥ（ポリフェニレンエーテル）などの、体積抵抗率が１０^１６Ωｍ程度の樹脂材料で形成される。図３に示すように、第１側壁４１ａ，４１ａの内側面には、高圧電極部４２を載置するための凸部４１３ａと高圧電極部４２を係止するための係合爪４１３ｂとを有する高圧電極搭載部４１３が、それぞれ所定間隔をあけて設けられている。他方、第２側壁４１ｂ，４１ｂの内側面には、集塵電極部４３を係止するための集塵電極係止爪４１４ａが両端側に形成されている。なお、集塵電極係止爪４１４ａは、第１側壁４１ａ，４１ａの内側面における２つの高圧電極搭載部４１３，４１３の間にも設けられている。 The rectangular frame portion 41 is made of insulating synthetic resin and has first side walls 41a, 41a forming long sides and second side walls 41b, 41b forming short sides. The frame portion 41 is made of a resin material such as PPE (polyphenylene ether) having a volume resistivity of about 10 ¹⁶ Ωm. As shown in FIG. 3, the inner side surfaces of the first side walls 41a, 41a have convex portions 413a for mounting the high voltage electrode portion 42 and engaging claws 413b for engaging the high voltage electrode portion 42. High-voltage electrode mounting portions 413 are provided at predetermined intervals. On the other hand, on the inner side surfaces of the second side walls 41b, 41b, dust collection electrode locking claws 414a for locking the dust collection electrode portion 43 are formed on both end sides. The dust collecting electrode locking claw 414a is also provided between the two high voltage electrode mounting portions 413, 413 on the inner side surfaces of the first side walls 41a, 41a.

高圧電極部４２は、半絶縁性の樹脂によりそれぞれ平板状に形成され、所定の間隔をあけて平行に設けられた複数の高圧電極４２１と、これら複数の高圧電極４２１の端部を連結する連結部４２３とにより、ブロック状に一体成形されている。高圧電極部４２は、例えばＰＡ（ポリアミド）やＡＢＳ樹脂を混合した体積抵抗率が１０^１１Ωｍ程度の樹脂材料で形成される。また、集塵電極部４３も、それぞれ半絶縁性の樹脂により平板状に形成され、所定の間隔をあけて平行に設けられた複数の接地電極４３１と、これら複数の接地電極４３１の端部を連結する連結部４３３とにより、ブロック状に一体成形されている。接地電極部４３は、例えばＰＡ（ポリアミド）やＡＢＳ樹脂を混合した体積抵抗率が１０^７Ωｍ程度の樹脂材料で形成される。そして、高圧電極部４２と集塵電極部４３とが、共に枠部４１に取付けられた状態では、高圧電極４２１と接地電極４３１とが所定の間隔をあけて交互に配置される。 The high-voltage electrode part 42 is formed of a semi-insulating resin in a flat plate shape, and includes a plurality of high-voltage electrodes 421 arranged in parallel at predetermined intervals, and a connection connecting the ends of the plurality of high-voltage electrodes 421 . The part 423 is integrally formed into a block shape. The high-voltage electrode portion 42 is made of a resin material having a volume resistivity of about 10 ¹¹ Ωm, which is a mixture of PA (polyamide) and ABS resin, for example. The dust collecting electrode portion 43 is also formed of a semi-insulating resin in a flat plate shape, and includes a plurality of ground electrodes 431 provided in parallel at predetermined intervals, and ends of the plurality of ground electrodes 431. It is integrally formed into a block shape by the connecting portion 433 to be connected. The ground electrode portion 43 is made of a resin material having a volume resistivity of about 10 ⁷ Ωm, which is a mixture of PA (polyamide) and ABS resin, for example. When both the high-voltage electrode portion 42 and the dust collection electrode portion 43 are attached to the frame portion 41, the high-voltage electrode 421 and the ground electrode 431 are alternately arranged with a predetermined interval.

また、詳しくは後述するが、高圧電極部４２の連結部４２３には、複数の高圧電極４２１に対して直交方向に溝部４２２が形成されている。かかる溝部４２２の中に給電部材４４が装着され、連結部４２３に接続された給電部材４４を介して高圧電極部４２へ集塵部用高圧電源４０から電力が供給される。また、集塵電極部４３の連結部４３３には、接地するために接触部４３２が設けられている。 Further, although details will be described later, grooves 422 are formed in the connecting portion 423 of the high-voltage electrode portion 42 in a direction orthogonal to the plurality of high-voltage electrodes 421 . A power supply member 44 is mounted in the groove 422 , and power is supplied from the high voltage power supply 40 for the dust collecting section to the high voltage electrode section 42 via the power supply member 44 connected to the connecting section 423 . In addition, a contact portion 432 is provided at the connection portion 433 of the dust collection electrode portion 43 for grounding.

高圧電極部４２の連結部４２３に形成された溝部４２２に装着される給電部材４４は、金属製の帯状体が板金加工され、図３に示すように略コ字状に形成されている。すなわち、給電部材４４は、第１の給電部４４１と、第２の給電部４４２と、第１の給電部４４１と第２の給電部４４２とを接続して導通させる導通部４４３とにより略コ字状に形成される。第１の給電部４４１は、高圧電極４２１の一端側から給電できるように高圧電極４２１の一端側に配置されている。第２の給電部４４２は、高圧電極４２１の他端側から給電できるように高圧電極４２１の他端側に配置される。そして、第１の給電部４４１と第２の給電部４４２とを接続する導通部４４３は、高圧電極４２１に対しても接地電極４３１に対しても平行に配置されている。 The power supply member 44 mounted in the groove 422 formed in the connecting portion 423 of the high-voltage electrode portion 42 is formed by sheet-metal processing a belt-like metal body and formed into a substantially U-shape as shown in FIG. In other words, the power supply member 44 is substantially connected by the first power supply part 441, the second power supply part 442, and the conduction part 443 that connects and conducts the first power supply part 441 and the second power supply part 442. Formed in the shape of a letter. The first power supply portion 441 is arranged on one end side of the high voltage electrode 421 so that power can be supplied from the one end side of the high voltage electrode 421 . The second power supply portion 442 is arranged on the other end side of the high voltage electrode 421 so that power can be supplied from the other end side of the high voltage electrode 421 . A conductive portion 443 that connects the first power supply portion 441 and the second power supply portion 442 is arranged parallel to both the high voltage electrode 421 and the ground electrode 431 .

給電部材４４の第１の給電部４４１の端部には、電圧を印加するための接触部４４４が形成されている。この接触部４４４は、給電部材４４が高圧電極部４２の連結部４２３に装着された状態では、図２に示すように、集塵部４の枠部４１の外側面に露出する。 A contact portion 444 for applying voltage is formed at the end of the first power supply portion 441 of the power supply member 44 . The contact portion 444 is exposed on the outer surface of the frame portion 41 of the dust collecting portion 4 when the power supply member 44 is attached to the connecting portion 423 of the high-voltage electrode portion 42, as shown in FIG.

ここで、高圧電極部４２に給電する給電部材４４の保持構造、すなわち、給電部材４４が高圧電極部４２の連結部４２３に形成された溝部４２２へ保持される構造について、図面に基づいてより具体的に説明する。図４は、電気集塵機２の集塵部４の高圧電極部４２を示す斜視図、図５は、電気集塵機２の集塵部４の高圧電極部４２の平面図である。また、図６は、高圧電極部４２の連結部４２３を示す斜視図である。また、図７は、給電部材４４が連結部４２３の溝部４２２に保持される一態様を説明するための模式図である。 Here, the holding structure of the power supply member 44 that supplies power to the high voltage electrode portion 42, that is, the structure in which the power supply member 44 is held in the groove portion 422 formed in the connection portion 423 of the high voltage electrode portion 42 will be described in more detail with reference to the drawings. explained in detail. 4 is a perspective view showing a high-voltage electrode portion 42 of the dust collecting portion 4 of the electric dust collector 2, and FIG. 5 is a plan view of the high-voltage electrode portion 42 of the dust collecting portion 4 of the electric dust collector 2. FIG. 6 is a perspective view showing the connecting portion 423 of the high voltage electrode portion 42. As shown in FIG. FIG. 7 is a schematic diagram for explaining one mode in which the power supply member 44 is held in the groove portion 422 of the connecting portion 423. As shown in FIG.

図４に示すように、給電部材４４は、ブロック状に形成された高圧電極部４２の３つの側面を囲むように装着される。すなわち、図４および図５に示すように、複数の高圧電極４２１の端部を連結する連結部４２３には、枠部４１（図３参照）に設けられた高圧電極搭載部４１３と対応する複数のリブ４２４が外方へ突出するように形成されており、かかるリブ４２４と連結部４２３の側面との間に溝部４２２が形成されている。給電部材４４は、かかる溝部４２２内に挿入されて連結部４２３と接触し、高圧電極部４２への給電がなされる。 As shown in FIG. 4, the power supply member 44 is attached so as to surround three side surfaces of the block-shaped high-voltage electrode portion 42 . That is, as shown in FIGS. 4 and 5, the connecting portion 423 connecting the ends of the plurality of high voltage electrodes 421 has a plurality of electrodes corresponding to the high voltage electrode mounting portion 413 provided on the frame portion 41 (see FIG. 3). A rib 424 is formed to protrude outward, and a groove 422 is formed between the rib 424 and the side surface of the connecting portion 423 . The power supply member 44 is inserted into the groove portion 422 and comes into contact with the connecting portion 423 to supply power to the high voltage electrode portion 42 .

本実施例に係るリブ４２４は、図５に示すように、連結部４２３の中央に形成された中央リブ４２４ｄと、この中央リブ４２４ｄを挟んで左右対称に、第１のリブ４２４ａ、第２のリブ４２４ｂ、第３のリブ４２４ｃと３つずつ形成されている。すなわち、一側の連結部４２３に合計７つのリブ４２４が形成されている。 As shown in FIG. 5, the rib 424 according to the present embodiment includes a central rib 424d formed at the center of the connecting portion 423, and a first rib 424a and a second rib 424d that are bilaterally symmetrical across the central rib 424d. Three ribs 424b and three third ribs 424c are formed. In other words, a total of seven ribs 424 are formed on one connecting portion 423 .

そして、かかるリブ４２４のうち、相対的に狭幅な第２のリブ４２４ｂを除いて、第１のリブ４２４ａ、第３のリブ４２４ｃ、および中央リブ４２４ｄの内側に、第１の突出部であるリブ側突出部４２５が溝部４２２に臨むように形成されている。他方、連結部４２３の側面には、高圧電極４２１の配列方向においてリブ側突出部４２５とはずれた位置に、第２の突出部である一対の連結部側突出部４２６，４２７が形成されている。そして、かかるリブ側突出部４２５と連結部側突出部４２６，４２７とにより、三点支持構造が形成される。こうして、給電部材４４の第１の給電部４４１（第２の給電部４４２）は、複数個所に設けられた三点支持構造により、各突出部（リブ側突出部４２５、連結部側突出部４２６、４２７）に密着した状態で支持される。 Then, among the ribs 424, except for the relatively narrow second rib 424b, inside the first rib 424a, the third rib 424c, and the central rib 424d, a first protrusion is formed. A rib-side projecting portion 425 is formed so as to face the groove portion 422 . On the other hand, on the side surface of the connecting portion 423, a pair of connecting portion-side projecting portions 426 and 427, which are second projecting portions, are formed at positions deviated from the rib-side projecting portion 425 in the arrangement direction of the high-voltage electrodes 421. . The rib-side projecting portion 425 and the connecting portion-side projecting portions 426 and 427 form a three-point support structure. In this way, the first power supply portion 441 (second power supply portion 442) of the power supply member 44 is supported by the three-point support structure provided at a plurality of locations, and each protrusion (the rib-side protrusion 425 and the connecting-portion-side protrusion 426) is supported. , 427).

すなわち、図６等に示すように、第１のリブ４２４ａおよび第３のリブ４２４ｃおよび中央リブ４２４ｄの内側面にリブ側突出部４２５が形成されるとともに、このリブ側突出部４２５と対向する連結部４２３の側面に、高圧電極４２１の配列方向においてリブ側突出部４２５とずれた位置に一対の連結部側突出部４２６，４２７が形成されて三点支持構造が構成される。 That is, as shown in FIG. 6 and the like, rib-side protrusions 425 are formed on the inner surfaces of the first rib 424a, the third rib 424c, and the central rib 424d, and the rib-side protrusions 425 are oppositely connected to each other. A pair of connecting portion-side projecting portions 426 and 427 are formed on the side surface of the portion 423 at positions displaced from the rib-side projecting portion 425 in the arrangement direction of the high-voltage electrodes 421 to form a three-point support structure.

このように、給電部材４４の一方の側面に当接する第１の突出部であるリブ側突出部４２５と、給電部材４４の他方の側面に当接する第２の突出部である連結部側突出部４２６，４２７とは、給電部材４４を挟む位置であって、高圧電極４２１の配列方向において互いにずれた位置に設けられる。かかる第１の突出部と一対の第２の突出部とで構成される三点支持構造は、連結部４２３において均等な間隔で複数個所に設けられることが望ましいが、一か所に設けても構わない。 In this way, the rib-side protrusion 425 that is the first protrusion that abuts one side surface of the power supply member 44 and the joint-side protrusion that is the second protrusion that abuts the other side surface of the power supply member 44 are arranged. 426 and 427 are positions sandwiching the power supply member 44 and are provided at positions shifted from each other in the arrangement direction of the high-voltage electrodes 421 . The three-point support structure composed of the first protrusion and the pair of second protrusions is desirably provided at a plurality of locations on the connecting portion 423 at equal intervals, but it may be provided at one location. I do not care.

したがって、溝部４２２の対向する内側面それぞれには、一方の内側面から他方の内側面に向かって突出する突出部（リブ側突出部４２５および連結部側突出部４２６，４２７）が形成され、給電部材４４は、挟持部としての対向する突出部（リブ側突出部４２５と連結部側突出部４２６、４２７）同士で挟持されることになる。 Therefore, on each of the opposing inner side surfaces of the groove portion 422, protrusions (rib side protrusion 425 and connecting portion side protrusions 426 and 427) that protrude from one inner side surface toward the other inner side surface are formed to supply power. The member 44 is sandwiched between the opposing projecting portions (the rib-side projecting portion 425 and the connecting-portion-side projecting portions 426 and 427) serving as the sandwiching portion.

ところで、図６に示すように、突出部（リブ側突出部４２５および連結部側突出部４２６，４２７）は、溝部４２２の深さ方向に沿ってリブ状に形成されている。そして、突出部における先端側、すなわち溝部４２２の開口側には、給電部材４４を溝部４２２の底部方向へ案内するテーパ部４２８が形成されている。このように、突出部を、所定の高さを有するリブ状に形成するとともに、先端側にはテーパ部４２８を設けたため、給電部材４４を溝部４２２へ装着する際に、円滑に挿入できるとともに、挿入した際には、突出部により給電部材４４の厚み方向へと加わる十分な押圧力で給電部材４４を挟持することができる。 By the way, as shown in FIG. 6 , the protrusions (rib-side protrusion 425 and connecting-portion-side protrusions 426 and 427 ) are formed like ribs along the depth direction of the groove 422 . A tapered portion 428 that guides the power supply member 44 toward the bottom of the groove 422 is formed on the tip side of the projection, that is, on the opening side of the groove 422 . As described above, the projecting portion is formed in the shape of a rib having a predetermined height, and the tapered portion 428 is provided on the distal end side. When the power supply member 44 is inserted, the power supply member 44 can be clamped with a sufficient pressing force applied in the thickness direction of the power supply member 44 by the projecting portion.

図８Ａは、連結部４２３の溝部４２２を示す平面図、図８Ｂは、給電部材４４が連結部４２３の溝部４２２に保持された状態を示す平面図である。図８Ａに示すように、溝部４２２の幅をＷ、突出部（リブ側突出部４２５および連結部側突出部４２６，４２７）の各幅をそれぞれｄとするとともに、図８Ｂに示すように、給電部材４４の第１の給電部４４１（第２の給電部４４２）の厚みをｔとしたとする。その場合、例えば、以下の式が成立するように、給電部材４４の厚み、溝部４２２や突出部の幅などの寸法を決定することができる。
Ｗ－２ｄ＜ｔ＜Ｗ－ｄ・・・・（式１） 8A is a plan view showing the groove portion 422 of the connecting portion 423, and FIG. 8B is a plan view showing a state in which the power supply member 44 is held in the groove portion 422 of the connecting portion 423. FIG. As shown in FIG. 8A, the width of the groove 422 is W, and the width of each protrusion (the rib-side protrusion 425 and the connecting-portion-side protrusions 426 and 427) is d. Let t be the thickness of the first power supply portion 441 (second power supply portion 442) of the member 44 . In that case, for example, dimensions such as the thickness of the power supply member 44 and the widths of the grooves 422 and the protrusions can be determined so that the following equations hold.
W-2d<t<Wd (Formula 1)

かかる寸法とすることにより、給電部材４４は、図８Ｂに示すように、リブ側突出部４２５および連結部側突出部４２６，４２７による３点支持によって、あたかも波状になるようにしっかりと押圧された状態で連結部４２３に接触することになる。しかも、板金で形成された給電部材４４は、波状に変形した状態から元の平板状に戻ろうとする復元力によって、更にリブ側突出部４２５および連結部側突出部４２６，４２７へと押し付けられる。そのため、給電部材４４が元の形状に戻ろうとして連結部４２３から離れてしまうことを抑制できるので、給電部材４４と高圧電極部４２との間で接触状態が変化することを防止することができる。したがって、給電部材４４と高圧電極部４２との接触状態の変化に起因する集塵性能の変動も防止でき、本実施例に係る電気集塵機２の集塵部４は、安定した集塵能力を発揮することができる。 With such dimensions, the power supply member 44 is firmly pressed in a wavy shape by three-point support by the rib-side protrusion 425 and the connecting-portion-side protrusions 426 and 427, as shown in FIG. 8B. In this state, the connecting portion 423 is contacted. Moreover, the power supply member 44 made of sheet metal is further pressed against the rib-side projecting portion 425 and the connecting portion-side projecting portions 426 and 427 by a restoring force that attempts to return to the original flat plate shape from the wavy deformed state. Therefore, it is possible to prevent the power supply member 44 from moving away from the connection portion 423 in an attempt to return to its original shape. . Therefore, it is possible to prevent fluctuations in the dust collection performance due to changes in the contact state between the power supply member 44 and the high-voltage electrode portion 42, and the dust collection portion 4 of the electric dust collector 2 according to the present embodiment exhibits stable dust collection performance. can do.

また、図７に示すように、溝部４２２を形成する複数のリブ４２４の連結部４２３の側面からの突出長さＤは、給電部材４４を突出部が確実に挟持可能な長さを確保できるだけでよい。そのため、突出長さＤが大きくなるのを抑制することができるので、高圧電極部４２が外方へ大きくなるのを抑えることが可能となり、集塵部４、ひいては電気集塵機２、さらには空気清浄機１の大型化を抑制することができる。 Further, as shown in FIG. 7, the projection length D from the side surface of the connecting portion 423 of the plurality of ribs 424 forming the groove portion 422 is sufficient to ensure that the projection portions can securely hold the power supply member 44 therebetween. good. Therefore, since it is possible to suppress the projection length D from increasing, it is possible to suppress the high-voltage electrode portion 42 from increasing outward, and the dust collector 4, the electric dust collector 2, and the air cleaner can be prevented. An increase in the size of the machine 1 can be suppressed.

次に、実施例における給電部材４４の導通部４４３（図３参照）が、集塵部４の枠部４１に保持される構造について説明する。図９は、実施例の集塵部４の平面図であり、図１０は、図９におけるＡ部拡大図である。また、図１１は、実施例における導通部配置部の構造を示すための図１０におけるＸＩ－ＸＩ断面図であり、図１２は、図１１における導通部配置部と給電部材４４の導通部４４３との位置関係を示すための斜視図である。なお、便宜上、図９～図１２に示す集塵部４では、集塵電極部４３を枠部４１から外した状態を示している。 Next, a structure in which the conducting portion 443 (see FIG. 3) of the power supply member 44 in the embodiment is held by the frame portion 41 of the dust collecting portion 4 will be described. 9 is a plan view of the dust collecting portion 4 of the embodiment, and FIG. 10 is an enlarged view of part A in FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 10 for showing the structure of the conducting portion arrangement portion in the embodiment, and FIG. 12 shows the conducting portion arrangement portion in FIG. 1 is a perspective view for showing the positional relationship of . 9 to 12 show a state in which the dust collecting electrode portion 43 is removed from the frame portion 41, for the sake of convenience.

図９に示すように、給電部材４４を高圧電極部４２に装着した状態では、第１の給電部４４１および第２の給電部４４２が、高圧電極部４２の連結部４２３に設けられた溝部４２２に配置されている。他方、第１の給電部４４１と第２の給電部４４２を接続する導通部４４３については、高圧電極部４２や集塵電極部４３を保持する枠部４１に設けられた導通部配置部４１０に配置される。そして、導通部配置部４１０と接地電極４３１の間には、枠部４１から立設する第１のリブ部４１５（リブ４１５１およびリブ４１５２）が配置されている。 As shown in FIG. 9 , when the power supply member 44 is attached to the high voltage electrode portion 42 , the first power supply portion 441 and the second power supply portion 442 are connected to the groove portion 422 provided in the connection portion 423 of the high voltage electrode portion 42 . are placed in On the other hand, the conductive portion 443 that connects the first power supply portion 441 and the second power supply portion 442 is connected to the conductive portion arrangement portion 410 provided in the frame portion 41 that holds the high voltage electrode portion 42 and the dust collection electrode portion 43 . placed. A first rib portion 415 (rib 4151 and rib 4152 ) erected from the frame portion 41 is arranged between the conductive portion arrangement portion 410 and the ground electrode 431 .

また、図１０および図１１に示すように、枠部４１には、第１のリブ部４１５として、集塵電極部４３の接地電極４３１からそれぞれ所定距離だけ離隔した位置に立設されたリブ４１５１およびリブ４１５２と、このリブ４１５２と協働して給電部材４４の導通部４４３を保持する第２のリブ部４１６，４１６とが設けられている。 As shown in FIGS. 10 and 11 , ribs 4151 are erected as first rib portions 415 on the frame portion 41 at positions separated from the ground electrodes 431 of the dust collection electrode portion 43 by a predetermined distance. and a rib 4152, and second rib portions 416, 416 that cooperate with the rib 4152 to hold the conductive portion 443 of the power supply member 44 are provided.

第１のリブ部４１５（４１５１，４１５２）は、導通部４４３と平行な方向に対して所定の幅を有する略壁状に形成されている。また、第２のリブ部４１６，４１６は、第１のリブ部４１５のリブ４１５２の両端部に対峙する位置に、それぞれ柱状に形成されている。そして、対峙するリブ４１５２と第２のリブ部４１６との間に、導通部４４３が収容される導通部収容空間４１８が形成される。 The first rib portion 415 ( 4151 , 4152 ) is formed in a substantially wall shape having a predetermined width in the direction parallel to the conducting portion 443 . The second rib portions 416, 416 are formed in a columnar shape at positions facing both ends of the rib 4152 of the first rib portion 415, respectively. Between the rib 4152 and the second rib portion 416 facing each other, a conducting portion accommodating space 418 in which the conducting portion 443 is accommodated is formed.

かかる構成により、図１１および図１２に示すように、給電部材４４の導通部４４３は、第１のリブ部４１５（４１５１，４１５２）によって、異極である接地電極４３１との間の絶縁距離が確保される。すなわち、枠部４１は、導通部配置部４１０が接地電極４３１間の絶縁距離を確保する第１のリブ部４１５を備えることになる。そのため、集塵部４の枠部４１が大型化するのを抑制しつつ、高圧電極４２１に給電する給電部材４４の導通部４４３と、該導通部４４３とは異極である接地電極４３１との空間距離および沿面距離を確保することができる。このように、本実施例に係る電気集塵機２の集塵部４では、集塵部４の大型化を抑制しつつ、互いに異なる極性を有する高圧電極４２１と接地電極４３１との間で短絡することを防止することができる。 With such a configuration, as shown in FIGS. 11 and 12, the conductive portion 443 of the power supply member 44 has an insulation distance from the ground electrode 431 having a different polarity due to the first rib portions 415 (4151 and 4152). Secured. That is, the frame portion 41 is provided with the first rib portion 415 that ensures the insulation distance between the ground electrodes 431 in the conductive portion arrangement portion 410 . Therefore, while suppressing an increase in the size of the frame portion 41 of the dust collecting portion 4, the connection between the conducting portion 443 of the power supply member 44 that supplies power to the high-voltage electrode 421 and the ground electrode 431 having a different polarity from the conducting portion 443 is achieved. Spatial distance and creepage distance can be secured. As described above, in the dust collection unit 4 of the electric dust collector 2 according to the present embodiment, while suppressing an increase in the size of the dust collection unit 4, short-circuiting between the high-voltage electrode 421 and the ground electrode 431 having different polarities is prevented. can be prevented.

また、図１１に示すように、第１のリブ部４１５および第２のリブ部４１６には、給電部材４４の導通部４４３を導通部配置部４１０の底部方向へ案内する案内テーパ４１５ａ，４１６ａが、導通部配置部４１０の開口側にそれぞれ形成されている。したがって、給電部材４４の導通部４４３を、導通部配置部４１０へ容易に案内することができる。 Further, as shown in FIG. 11, the first rib portion 415 and the second rib portion 416 are provided with guide tapers 415a and 416a for guiding the conducting portion 443 of the power supply member 44 toward the bottom portion of the conducting portion arrangement portion 410. , are formed on the opening side of the conducting portion arrangement portion 410, respectively. Therefore, the conductive portion 443 of the power supply member 44 can be easily guided to the conductive portion arrangement portion 410 .

また、図１１に示すように、第２のリブ部４１６の案内テーパ４１６ａの終端部には、導通部収容空間４１８を形成する底部となる段差部４１６ｂが設けられている。かかる構成により、案内テーパ４１５ａ，４１６ａによって導通部収容空間４１８へ案内される給電部材４４の導通部４４３を受け止めることができる。したがって、導通部４４３を、導通部配置部４１０における所望する位置で保持することができる。 Further, as shown in FIG. 11 , a stepped portion 416 b serving as a bottom portion forming a conductive portion accommodating space 418 is provided at the end portion of the guide taper 416 a of the second rib portion 416 . With such a configuration, the conductive portion 443 of the power supply member 44 guided to the conductive portion accommodating space 418 by the guide tapers 415a and 416a can be received. Therefore, the conductive portion 443 can be held at a desired position in the conductive portion placement portion 410 .

ところで、図１０～図１２に示すように、枠部４１には、上述してきた第１のリブ部４１５および第２のリブ部４１６の他に、第３のリブ部４１７が形成されている。この第３のリブ部４１７は、給電部材４４の導通部４４３が第１のリブ部４１５よりも接地電極４３１側に配置されるのを防止している。したがって、第３のリブ部４１７の存在により、導通部４４３は、例えば、第１のリブ部４１５であるリブ４１５１，４１５２間に形成された空間４１９に誤って挿通されることがない。そのため、導通部４４３の誤配置によって導通部４４３と接地電極４３１との絶縁距離（空間距離および沿面距離）が確保できなくなってしまうのを防止することができる。 Incidentally, as shown in FIGS. 10 to 12, the frame portion 41 is formed with a third rib portion 417 in addition to the first rib portion 415 and the second rib portion 416 described above. The third rib portion 417 prevents the conducting portion 443 of the power supply member 44 from being arranged closer to the ground electrode 431 than the first rib portion 415 is. Therefore, due to the presence of the third rib portion 417 , the conducting portion 443 is not mistakenly inserted into the space 419 formed between the ribs 4151 and 4152 of the first rib portion 415 , for example. Therefore, it is possible to prevent the insulation distance (spatial distance and creepage distance) between the conductive portion 443 and the ground electrode 431 from becoming unsecured due to misplacement of the conductive portion 443 .

また、かかる第３のリブ部４１７は、給電部材４４の導通部４４３に対向する面が、第１のリブ部４１５と第２のリブ部４１６との間に形成される導通部収容空間４１８（図１１参照）よりも所定距離だけ接地電極４３１側に位置している。そのため、第３のリブ部４１７は、導通部収容空間４１８に位置する導通部４４３と接触するおそれがない。したがって、導通部４４３が接地電極４３１と近接した位置にある第３のリブ部４１７に接触して短絡するおそれもない。 The surface of the third rib portion 417 facing the conducting portion 443 of the power supply member 44 is formed between the first rib portion 415 and the second rib portion 416 in the conducting portion accommodating space 418 ( 11) is located on the ground electrode 431 side by a predetermined distance. Therefore, the third rib portion 417 is unlikely to come into contact with the conducting portion 443 located in the conducting portion accommodating space 418 . Therefore, there is no possibility that the conductive portion 443 will contact the third rib portion 417 located close to the ground electrode 431 and cause a short circuit.

以上、本願の実施例を図面に基づいて説明したが、あくまでも例示であって、当業者の知識に基づいて種々の変形、改良を施すことができる。 The embodiments of the present application have been described above with reference to the drawings, but these are only examples, and various modifications and improvements can be made based on the knowledge of those skilled in the art.

上述してきた実施例より、以下の電気集塵機２の集塵部４が実現される。 The following dust collector 4 of the electric dust collector 2 is realized by the above-described embodiment.

（１）平板状に形成された複数の高圧電極４２１と、複数の高圧電極４２１の端部を連結する連結部４２３と、連結部４２３に接続されて高圧電極４２１に給電する給電部材４４とを備え、連結部４２３は、高圧電極４２１に対して直交方向に溝部４２２が形成され、給電部材４４は、溝部４２２に設けられた挟持部で挟持される、電気集塵機２の集塵部４。 (1) A plurality of high voltage electrodes 421 formed in a flat plate shape, a connecting portion 423 connecting the ends of the plurality of high voltage electrodes 421, and a power supply member 44 connected to the connecting portion 423 to supply power to the high voltage electrodes 421. The dust collector 4 of the electric dust collector 2 includes a connecting portion 423 formed with a groove portion 422 perpendicular to the high-voltage electrode 421 , and a power supply member 44 sandwiched between sandwiching portions provided in the groove portion 422 .

かかる構成を備える電気集塵機２の集塵部４によれば、高圧電極部４２と、この高圧電極部４２を構成する高圧電極４２１に給電する給電部材４４との間の接触状態の変化を抑制し、安定した集塵性能を維持することができる。 According to the dust collection unit 4 of the electric dust collector 2 having such a configuration, change in the contact state between the high voltage electrode unit 42 and the power supply member 44 that supplies power to the high voltage electrode 421 that constitutes the high voltage electrode unit 42 is suppressed. , can maintain stable dust collection performance.

（２）上記（１）において、挟持部は、溝部４２２の対向する内側面それぞれに形成された突出部（リブ側突出部４２５および連結部側突出部４２６，４２７）を有し、突出部は、給電部材４４の一方の側面に当接する第１の突出部４２５と、給電部材４４の他方の側面に当接する第２の突出部４２６，４２７とを有し、給電部材４４は、対向する第１の突出部４２５と第２の突出部４２６，４２７とで挟持される、電気集塵機２の集塵部４。 (2) In (1) above, the sandwiching portion has projections (rib-side projections 425 and connecting-portion-side projections 426 and 427) respectively formed on the opposing inner surfaces of the groove 422, and the projections are , a first projecting portion 425 that contacts one side surface of the power supply member 44, and second projecting portions 426 and 427 that contact the other side surface of the power supply member 44. The dust collecting part 4 of the electric dust collector 2 sandwiched between the first projecting part 425 and the second projecting parts 426 and 427 .

かかる構成を備える電気集塵機２の集塵部４によれば、給電部材４４に対して突出部（４２５，４２６，４２７）を両側から食い込ませるようにして挟持することができるため、上記（１）の効果に加え、より強固な保持が可能となって、より安定した集塵性能の維持を図ることができる。 According to the dust collecting part 4 of the electric dust collector 2 having such a configuration, the projecting parts (425, 426, 427) can be sandwiched so as to bite into the power supply member 44 from both sides, so the above (1) In addition to the above effect, it is possible to maintain a more stable dust collection performance.

（３）上記（２）において、突出部は、給電部材４４を挟んで設けられる、第１の突出部であるリブ側突出部４２５と、第２の突出部である連結部側突出部４２６，４２７とは、高圧電極４２１の配列方向において互いにずれた位置に設けられる、電気集塵機２の集塵部４。 (3) In the above (2), the protrusions are the rib-side protrusion 425 that is the first protrusion and the connecting-portion-side protrusion 426 that is the second protrusion, which are provided with the power supply member 44 interposed therebetween. 427 denotes the dust collecting part 4 of the electric dust collector 2 which is provided at a position shifted from each other in the arrangement direction of the high-voltage electrodes 421 .

かかる構成を備える電気集塵機２の集塵部４によれば、給電部材４４が波状に変形した状態で溝部４２２に設けられた挟持部で固定される。その上、波状に変形した給電部材４４は、元の平板状に戻ろうとする復元力によって、溝部４２２の内側面に形成された突出部（４２５，４２６，４２７）へと更に密着する方向に力を受ける。そのため、給電部材４４が元の形状に戻ろうとして連結部４２３から離れてしまうことを抑制できるので、給電部材４４と高圧電極部４２との間で接触状態が変化してしまうのを更に抑制することができる。また、リブ側突出部４２５および連結部側突出部４２６，４２７による三点支持で給電部材４４をしっかりと挟持できるため、上記（２）の効果をより高めることができる。 According to the dust collecting portion 4 of the electric dust collector 2 having such a configuration, the power supply member 44 is fixed by the clamping portion provided in the groove portion 422 in a wave-shaped deformed state. In addition, the power supply member 44 deformed into a wavy shape is forced in a direction to further adhere to the protruding portions (425, 426, 427) formed on the inner surface of the groove portion 422 by the restoring force that tries to return to the original flat plate shape. receive. Therefore, it is possible to prevent the power supply member 44 from moving away from the connecting portion 423 in an attempt to return to its original shape. be able to. In addition, since the power supply member 44 can be firmly sandwiched by three-point support by the rib-side projecting portion 425 and the connecting portion-side projecting portions 426 and 427, the above effect (2) can be further enhanced.

（４）上記（２）または（３）において、リブ側突出部４２５および連結部側突出部４２６，４２７は、溝部４２２の開口側に、給電部材４４を溝部４２２の底部方向へ案内するテーパ部４２８が形成される、電気集塵機２の集塵部４。 (4) In (2) or (3) above, the rib-side projecting portion 425 and the connecting portion-side projecting portions 426 and 427 are tapered portions that guide the power supply member 44 toward the bottom of the groove portion 422 toward the opening side of the groove portion 422. Precipitator 4 of electrostatic precipitator 2, 428 being formed.

かかる構成を備える電気集塵機２の集塵部４によれば、上記（２）または（３）の効果に加え、給電部材４４を溝部４２２へ円滑に案内することができる。 According to the dust collector 4 of the electric dust collector 2 having such a configuration, the power supply member 44 can be smoothly guided to the groove 422 in addition to the effect of (2) or (3).

（５）荷電された塵埃を捕集する電極部４５と、電極部４５を収容する枠部４１とを備え、電極部４５は、平板状に形成された複数の高圧電極４２１と、平板状に形成された複数の接地電極４３１と、高圧電極４２１の端部に接続されて高圧電極４２１に給電する給電部材４４と、を備えるとともに、高圧電極４２１と接地電極４３１とが交互に配置され、給電部材４４は、高圧電極４２１の一端側に配置される第１の給電部４４１と、高圧電極４２１の他端側に配置される第２の給電部４４２と、第１の給電部４４１と第２の給電部４４２とを接続して導通させる導通部４４３と、を有し、導通部４４３は、板状の導電部材で形成されるとともに、高圧電極４２１および接地電極４３１に対して平行に配置され、枠部４１は、電極部４５の外周を囲む筒状に形成されるとともに、給電部材４４の導通部４４３が配置される導通部配置部４１０を有し、導通部配置部４１０と接地電極４３１との間には、導通部４４３と接地電極４３１間の絶縁距離を確保する第１のリブ部４１５（リブ４１５１およびリブ４１５２）を備える、電気集塵機２の集塵部４。 (5) An electrode portion 45 for collecting charged dust and a frame portion 41 for housing the electrode portion 45. The electrode portion 45 includes a plurality of high-voltage electrodes 421 formed in a flat plate shape and a A plurality of ground electrodes 431 formed and a power supply member 44 connected to the ends of the high voltage electrodes 421 and supplying power to the high voltage electrodes 421 are provided. The member 44 includes a first power supply portion 441 arranged on one end side of the high voltage electrode 421, a second power supply portion 442 arranged on the other end side of the high voltage electrode 421, the first power supply portion 441 and the second power supply portion 442 arranged on the other end side of the high voltage electrode 421. The conducting portion 443 is formed of a plate-shaped conducting member and arranged parallel to the high-voltage electrode 421 and the ground electrode 431. , the frame portion 41 is formed in a cylindrical shape surrounding the outer periphery of the electrode portion 45 and has a conducting portion arrangement portion 410 in which the conducting portion 443 of the power supply member 44 is arranged. and a first rib portion 415 (rib 4151 and rib 4152) that secures an insulating distance between the conductive portion 443 and the ground electrode 431.

かかる構成を備える電気集塵機２の集塵部４によれば、集塵部４を大型化することなく、導通部４４３と接地電極４３１との距離を、空間距離においても沿面距離においても確保することができるため、互いに異なる極性を有する高圧電極４２１と接地電極４３１との間で短絡することを防止することができる。 According to the dust collecting part 4 of the electric dust collector 2 having such a configuration, the distance between the conductive part 443 and the ground electrode 431 can be secured both in the spatial distance and the creepage distance without increasing the size of the dust collecting part 4. Therefore, it is possible to prevent a short circuit between the high-voltage electrode 421 and the ground electrode 431 having polarities different from each other.

（６）上記（５）において、第１のリブ部４１５（リブ４１５２）は、接地電極４３１から所定距離だけ離隔した位置に立設され、第１のリブ部４１５（リブ４１５２）と協働して導通部４４３を挟持する第２のリブ部４１６をさらに有し、導通部４４３は第１のリブ部４１５（リブ４１５２）と第２のリブ部４１６とで挟持される、電気集塵機２の集塵部４。 (6) In (5) above, the first rib portion 415 (rib 4152) is erected at a position separated from the ground electrode 431 by a predetermined distance, and cooperates with the first rib portion 415 (rib 4152). The collector of the electric dust collector 2 further has a second rib portion 416 that sandwiches the conductive portion 443 with the conductive portion 443 sandwiched between the first rib portion 415 (rib 4152) and the second rib portion 416. dust section 4;

かかる構成を備える電気集塵機２の集塵部４によれば、上記（５）の効果に加え、接地電極４３１に対する絶縁距離を確保しながら導通部４４３を確実に枠部４１に対して保持することができる。 According to the dust collecting part 4 of the electric dust collector 2 having such a configuration, in addition to the effect of (5) above, the conducting part 443 can be reliably held to the frame part 41 while ensuring the insulation distance to the ground electrode 431. can be done.

（７）上記（６）において、枠部４１には、導通部４４３が、第１のリブ部４１５よりも接地電極４３１側に配置されるのを防止する第３のリブ部４１７が形成される、電気集塵機２の集塵部４。 (7) In the above (6), the frame portion 41 is formed with the third rib portion 417 that prevents the conductive portion 443 from being arranged closer to the ground electrode 431 than the first rib portion 415 is. , the dust collector 4 of the electrostatic precipitator 2;

かかる構成を備える電気集塵機２の集塵部４によれば、上記（６）の効果に加え、第１のリブ部４１５よりも接地電極４３１側に導通部４４３が誤配置されてしまうことがない。そのため、導通部４４３の誤配置によって導通部４４３と接地電極４３１間の絶縁距離が確保できなくなってしまうのを防止することができる。 According to the dust collecting portion 4 of the electric dust collector 2 having such a configuration, in addition to the effect of (6) above, the conductive portion 443 is not misplaced closer to the ground electrode 431 than the first rib portion 415. . Therefore, it is possible to prevent the insulation distance between the conductive portion 443 and the ground electrode 431 from becoming unsecured due to the misplacement of the conductive portion 443 .

（８）上記（７）において、第１のリブ部４１５と第２のリブ部４１６との間には導通部収容空間４１８が形成され、第３のリブ部４１７は、第３のリブ部４１７の導通部４４３に対向する面が、導通部収容空間４１８よりも所定距離だけ接地電極４１３側に位置する、電気集塵機２の集塵部４。 (8) In (7) above, a conducting portion accommodation space 418 is formed between the first rib portion 415 and the second rib portion 416, and the third rib portion 417 The dust collection part 4 of the electric dust collector 2 has a surface facing the conduction part 443 of the electric dust collector 2 located on the side of the ground electrode 413 by a predetermined distance from the conduction part accommodation space 418 .

かかる構成を備える電気集塵機２の集塵部４によれば、上記（７）の効果に加え、導通部４４３が、接地電極４３１と近接した位置にある第３のリブ部４１７に接触することがない。そのため、導通部４４３が第３のリブ部４１７に接触して接地電極４３１と短絡してしまうことが防止されるので、集塵効率の低下を防止できる。 According to the dust collecting portion 4 of the electric dust collector 2 having such a configuration, in addition to the effect of (7) above, the conductive portion 443 can contact the third rib portion 417 located close to the ground electrode 431. do not have. Therefore, it is possible to prevent the conductive portion 443 from contacting the third rib portion 417 and short-circuiting with the ground electrode 431, thereby preventing a decrease in dust collection efficiency.

（９）上記（６）～（８）のいずれかにおいて、第１のリブ部４１５（リブ４１５２）と第２のリブ部４１６は、給電部材４４を導通部配置部４１０の底部方向へ案内する案内テーパ４１５ａ，４１６ａが、第１のリブ部４１５（リブ４１５２）と第２のリブ部４１６とにおける導通部配置部４１０の開口側にそれぞれ形成される、電気集塵機２の集塵部４。 (9) In any one of (6) to (8) above, the first rib portion 415 (rib 4152) and the second rib portion 416 guide the power supply member 44 toward the bottom portion of the conductive portion arrangement portion 410. The dust collector 4 of the electric dust collector 2, wherein the guide tapers 415a and 416a are formed on the opening side of the conducting portion arrangement portion 410 in the first rib portion 415 (rib 4152) and the second rib portion 416, respectively.

かかる構成を備える電気集塵機２の集塵部４によれば、上記（６）～（８）の効果に加え、給電部材４４の導通部４４３を導通部配置部４１０へ円滑に案内することができる。 According to the dust collector 4 of the electric dust collector 2 having such a configuration, in addition to the effects of (6) to (8), the conductive portion 443 of the power supply member 44 can be smoothly guided to the conductive portion arrangement portion 410. .

なお、本実施例では、各溝部４２２において、第１の突起部が１つ（リブ側突出部４２５）、第２の突出部が２つ（連結部側突出部４２６、４２７）設けられた場合を例示したが、各溝部４２２に設けられる第１の突起部および第２の突起部は、１つずつでも、２つ以上ずつでもよい。この場合であっても、給電部材４４は、波状となった状態で第１の突起部および第２の突起部によって挟持される。そのため、給電部材４４が元の平板状に戻ろうとする復元力によって第１の突起部および第２の突起部に更に押し付けられるので、給電部材４４と連結部４２の安定した接触状態を維持することができる。そのため、安定した集塵能力を発揮することができる。 In this embodiment, each groove 422 is provided with one first protrusion (rib-side protrusion 425) and two second protrusions (connection-side protrusions 426 and 427). , the number of the first protrusion and the second protrusion provided in each groove 422 may be one, or two or more. Even in this case, the power supply member 44 is sandwiched between the first protrusion and the second protrusion in a wavy state. Therefore, the power supply member 44 is further pressed against the first projection and the second projection by the restoring force that causes the power supply member 44 to return to its original flat plate shape. can be done. Therefore, stable dust collecting ability can be exhibited.

また、本実施例では、第１の突出部であるリブ側突出部４２５と、第２の突出部である連結部側突出部４２６、４２７とを、高圧電極の配列方向において互いにずれた位置に配置した場合を例示したが、第１の突出部４２５と第２の突出部とは、高圧電極の配列方向において同じ位置に配置されていてもよい。この場合は、給電部材４４を挟んで互いに対向する第１の突出部と第２の突出部とで、給電部材４４を挟持することができ、給電部材４４と高圧電極部４２との接触状態が変化するのを抑制し、安定した集塵能力を発揮することができる。 In addition, in this embodiment, the rib-side protrusion 425, which is the first protrusion, and the connecting-portion-side protrusions 426 and 427, which are the second protrusions, are arranged at positions shifted from each other in the arrangement direction of the high-voltage electrodes. Although the case of arranging them is illustrated, the first projecting portion 425 and the second projecting portion may be arranged at the same position in the arrangement direction of the high-voltage electrodes. In this case, the power supply member 44 can be sandwiched between the first projecting portion and the second projecting portion facing each other with the power supply member 44 therebetween, and the contact state between the power supply member 44 and the high-voltage electrode portion 42 is It is possible to suppress the change and exhibit a stable dust collection ability.

１空気清浄機
２電気集塵機
３荷電部
４集塵部
４１枠部
４２高圧電極部
４４給電部材
４５電極部
４１０導通部配置部
４１５第１のリブ部
４１５１，４１５２リブ
４１６第２のリブ部
４１５ａ，４１６ａ案内テーパ（テーパ部）
４１７第３のリブ部
４１８導通部収容空間
４２１高圧電極
４２２溝部
４２３連結部
４２５リブ側突出部（第１の突出部）
４２６，４２７連結部側突出部（第２の突出部）
４２８テーパ部
４３１接地電極
４４１第１の給電部
４４２第２の給電部
４４３導通部 Reference Signs List 1 air cleaner 2 electric dust collector 3 charge section 4 dust collection section 41 frame section 42 high voltage electrode section 44 power supply member 45 electrode section 410 conductive section arrangement section 415 first rib section 4151, 4152 rib 416 second rib section 415a, 416a guide taper (tapered portion)
417 Third rib portion 418 Conducting portion accommodating space 421 High voltage electrode 422 Groove portion 423 Connecting portion 425 Rib-side projecting portion (first projecting portion)
426, 427 connecting part side protrusion (second protrusion)
428 tapered portion 431 ground electrode 441 first feeding portion 442 second feeding portion 443 conducting portion

Claims

a plurality of high-voltage electrodes formed in a flat plate shape;
a connecting portion that connects ends of the plurality of high-voltage electrodes;
a power supply member connected to the connecting portion and supplying power to the high voltage electrode;
with
the connecting portion has a groove formed in a direction perpendicular to the high-voltage electrode;
The power supply member is held by a holding portion provided in the groove ,
The sandwiching portion has projections formed on opposing inner side surfaces of the groove,
The protrusion is
having a first protrusion that abuts one side surface of the power supply member and a second protrusion that abuts the other side surface of the power supply member,
the power supply member is sandwiched between the first projecting portion and the second projecting portion facing each other;
The dust collector of an electric dust collector , wherein the first projection and the second projection are provided at positions shifted from each other in the arrangement direction of the high-voltage electrodes .

The protrusion is
2. The dust collector of an electric dust collector according to claim 1 , wherein a tapered portion is formed on an opening side of said groove for guiding said power supply member toward the bottom of said groove.

a plurality of high-voltage electrodes formed in a flat plate shape;
a connecting portion that connects ends of the plurality of high-voltage electrodes;
a power supply member connected to the connecting portion and supplying power to the high voltage electrode;
with
the connecting portion has a groove formed in a direction perpendicular to the high-voltage electrode;
The power supply member is held by a holding portion provided in the groove,
The sandwiching portion has projections formed on opposing inner side surfaces of the groove,
The protrusion is
having a first protrusion that abuts one side surface of the power supply member and a second protrusion that abuts the other side surface of the power supply member,
the power supply member is sandwiched between the first projecting portion and the second projecting portion facing each other;
The protrusion is
A dust collector of an electric dust collector, wherein a tapered portion that guides the power supply member toward the bottom of the groove is formed on an opening side of the groove.