JP2013119055A - Dust collector - Google Patents

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JP2013119055A
JP2013119055A JP2011267857A JP2011267857A JP2013119055A JP 2013119055 A JP2013119055 A JP 2013119055A JP 2011267857 A JP2011267857 A JP 2011267857A JP 2011267857 A JP2011267857 A JP 2011267857A JP 2013119055 A JP2013119055 A JP 2013119055A
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electrode
folded
dust
folding
beam member
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Kanji Mogi
完治 茂木
Toshio Tanaka
利夫 田中
Ryuji Akiyama
竜司 秋山
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Daikin Industries Ltd
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Daikin Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To enhance dust collection efficiency by preventing abnormal discharge in a dust collector having a metal electrode.SOLUTION: An air cleaner is provided with a pair of electrodes (40,50) each of which is constituted in a lattice shape by vertically and horizontally crossing a plurality of horizontal crosspiece members (42,52) and a plurality of vertical crosspiece members (43,53) so as to form a plurality of ventilating holes (46,56). The dust collecting electrode (40) is constituted of a metal electrode where both crosspiece members (42,43) are formed of a metal plate. At a top end of the horizontal crosspiece member (42) of the dust collecting electrode (40), a folding back part (45) is formed having a folded back end side and having a curvature so that a folding back line (47) may not face a wall surface (53) of a high voltage electrode (50) where an end (47a) of the folding back line (47) opposes.

Description

本発明は、集塵装置に関し、特に、異常放電対策に係るものである。     The present invention relates to a dust collector, and particularly relates to measures against abnormal discharge.

従来より、電気的な引力を利用して空気等に含まれる粉塵を捕集する電気式の集塵装置が知られている(例えば、下記特許文献1を参照)。特許文献1の集塵装置は、先端から複数の突出片が突出した第1桟部材と突出片を有さない第2桟部材とが複数の通風孔が形成されるようにそれぞれ格子状に構成された一対の電極を有している。上記集塵装置において、一対の電極は、互いの突出片が他方の通風孔に挿通されるように空気通路に対向して設けられている。一対の電極の間に電位差を付与すると、通風孔の壁面と突出片の表面との間の空間に電界が形成される。その結果、通風孔を流れる気体中の粒子が、通風孔の壁面に引き寄せられて捕捉される。     2. Description of the Related Art Conventionally, an electric dust collector that collects dust contained in air or the like by using an electric attractive force is known (see, for example, Patent Document 1 below). The dust collecting device of Patent Document 1 is configured in a lattice shape so that a plurality of ventilation holes are formed by a first beam member in which a plurality of protruding pieces protrude from the tip and a second beam member that does not have a protruding piece. A pair of electrodes. In the dust collector, the pair of electrodes are provided to face the air passage so that the protruding pieces are inserted into the other ventilation hole. When a potential difference is applied between the pair of electrodes, an electric field is formed in a space between the wall surface of the ventilation hole and the surface of the protruding piece. As a result, particles in the gas flowing through the ventilation hole are attracted to and captured by the wall surface of the ventilation hole.

ところで、上述のような電極を金属の薄板によって形成する場合、切断加工のみでは型抜きの際に端部に尖ったエッジやバリが形成されてしまう。このようなエッジやバリが突出片に形成されると、該エッジやバリに電界が集中して異常放電が起こり、突出片の全面において電界が不均一となって集塵効率が低下するおそれがある。そのため、上記集塵装置では、一対の電極の少なくとも一方を金属板で金属電極に構成する一方、この金属電極の端部に所謂ヘミング加工を施していた。つまり、金属電極の端部に折返し部を形成して端部の厚みを増大させることにより、金属電極の端部にエッジやバリが形成されないようにしていた。     By the way, when the electrode as described above is formed of a thin metal plate, a sharp edge or burr is formed at the end portion during die cutting only by cutting. If such an edge or burr is formed on the protruding piece, the electric field concentrates on the edge or burr and abnormal discharge occurs, and the electric field is not uniform over the entire surface of the protruding piece, which may reduce the dust collection efficiency. is there. Therefore, in the dust collector, at least one of the pair of electrodes is configured as a metal electrode with a metal plate, and a so-called hemming process is performed on an end portion of the metal electrode. That is, by forming a folded portion at the end portion of the metal electrode to increase the thickness of the end portion, no edge or burr is formed at the end portion of the metal electrode.

特開2009−82911号公報JP 2009-82911 A

ところで、上記集塵装置では、上記折返し部は、金属電極の端部を単に半分に折り返すことによって形成されていた。そのため、金属電極の各突出片に形成された折返し部では、折返し線の端部(以下、単に折返し端と称する。)が、対向電極に対面していた。通常、金属板を折り返すと、その折返し端は尖った形状となる。そのため、各突出片の折返し部の折返し端が対向電極に対面していると、折返し端に電界が集中して異常放電が生じるおそれがあった。     By the way, in the dust collector, the folded portion is formed by simply folding the end portion of the metal electrode in half. Therefore, in the folded portion formed on each protruding piece of the metal electrode, the end portion of the folded line (hereinafter simply referred to as the folded end) faces the counter electrode. Usually, when a metal plate is folded, the folded end has a sharp shape. Therefore, if the folded end of the folded portion of each protruding piece faces the counter electrode, there is a possibility that an electric field concentrates on the folded end and abnormal discharge occurs.

本発明は、かかる点に鑑みてなされたものであり、その目的は、金属電極を有する集塵装置において、異常放電を防止して集塵効率を向上させることにある。     This invention is made | formed in view of this point, The objective is to prevent abnormal discharge and to improve dust collection efficiency in the dust collector which has a metal electrode.

第1の発明は、複数の第1桟部材(42,52)と複数の第2桟部材(43,53)とが複数の通風孔(46,56)が形成されるように縦横に交叉して格子状に構成された互いに対向する一対の電極(40,50)を備え、上記各電極(40,50)の第1桟部材(42,52)は、本体部(42a,52a)と、該本体部(42a,52a)の先端から突出して対向する電極(50,40)の通風孔(46,56)に延びる複数の突出片(44,54)とを有し、上記一対の電極(40,50)が塵埃を捕集するために電界を形成するように構成された集塵装置であって、上記一対の電極(40,50)の少なくとも一方は、両桟部材(42,43)が金属板によって形成された金属電極(40)に構成され、上記金属電極(40)の第1桟部材(42)の先端には、端辺を折り返した折返し部(45)であって、折返し線(47)が該折返し線(47)の端部(47a)が対向する電極(50)の壁面(53)に対面しないように湾曲部を有する折返し部(45)が形成されている。     In the first invention, a plurality of first crosspiece members (42,52) and a plurality of second crosspiece members (43,53) cross vertically and horizontally so that a plurality of ventilation holes (46,56) are formed. Each of the electrodes (40, 50) includes a pair of electrodes (40, 50) facing each other, and a first cross member (42, 52) of each of the electrodes (40, 50) includes a main body (42a, 52a), A plurality of projecting pieces (44, 54) projecting from the tip of the main body (42a, 52a) and extending to the ventilation holes (46, 56) of the opposing electrodes (50, 40), and the pair of electrodes ( 40, 50) is a dust collector configured to form an electric field to collect dust, wherein at least one of the pair of electrodes (40, 50) includes both crosspiece members (42, 43) Is formed on a metal electrode (40) formed of a metal plate, and a tip portion of the first crosspiece member (42) of the metal electrode (40) is a folded portion (45) whose end side is folded back. Line (47) is the end of the folded line (47) (47 A folded portion (45) having a curved portion is formed so that a) does not face the wall surface (53) of the opposing electrode (50).

第1の発明では、一対の電極(40,50)の少なくとも一方が金属電極(40)に構成され、該金属電極(40)の突出片(44)が突出する第1桟部材(42)の先端に、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)に対面しないように湾曲部を有する折返し線(47)で折り返された折返し部(45)が形成されている。つまり、金属電極(40)の第1桟部材(42)には、尖った形状となる折返し線(47)の端部(47a)が、対向する電極(50)の壁面(53)に対面しないように折返し部(45)が形成されている。そのため、一対の電極(40,50)の間に電位差を付与した際に、金属電極(40)の第1桟部材(42)の先端において、折返し部(45)の折返し線(47)の端部(47a)に電界が集中してしまうことがない。     In the first invention, at least one of the pair of electrodes (40, 50) is constituted by the metal electrode (40), and the protruding piece (44) of the metal electrode (40) protrudes from the first crosspiece member (42). A folded portion (45) folded at a folded line (47) having a curved portion is formed at the tip so that the end (47a) of the folded line (47) does not face the wall surface (53) of the counter electrode (50). Has been. That is, the end part (47a) of the fold line (47) having a sharp shape does not face the wall surface (53) of the opposing electrode (50) on the first crosspiece member (42) of the metal electrode (40). Thus, the folded portion (45) is formed. Therefore, when a potential difference is applied between the pair of electrodes (40, 50), at the tip of the first crosspiece member (42) of the metal electrode (40), the end of the return line (47) of the return portion (45) The electric field does not concentrate on the portion (47a).

第2の発明は、第1の発明において、上記折返し部(45)は、上記金属電極(40)の第1桟部材(42)の先端側の外縁全体を、角部が湾曲するように一体的に折り返すことによって形成されている。     In a second aspect based on the first aspect, the folded portion (45) is integrated so that the entire outer edge on the front end side of the first crosspiece member (42) of the metal electrode (40) is curved. It is formed by folding back.

第2の発明では、金属電極(40)の突出片(44)が突出する第1桟部材(42)の先端側の外縁全体を、角部が湾曲するように一体的に折り返すことによって折返し部(45)が形成される。このように折返し部(45)を形成することにより、第1桟部材(42)の幅方向の一端から他端に亘って折返し部(45)が形成されることとなる。よって、折返し部(45)の折返し線(47)の端部(47a)は、金属電極(40)の第1桟部材(42,52)の幅方向の端部に形成され、金属電極(40)の第1桟部材(42)において対向電極(50)の壁面(53)に対面する部分には折返し線(47)の端部(47a)が形成されない。     In the second invention, the entire outer edge on the front end side of the first crosspiece member (42) from which the protruding piece (44) of the metal electrode (40) protrudes is folded back integrally so that the corner portion is curved. (45) is formed. By forming the folded portion (45) in this way, the folded portion (45) is formed from one end to the other end in the width direction of the first crosspiece member (42). Therefore, the end portion (47a) of the folding line (47) of the folding portion (45) is formed at the end portion in the width direction of the first crosspiece member (42, 52) of the metal electrode (40), and the metal electrode (40 In the first crosspiece member (42), the end portion (47a) of the return line (47) is not formed in the portion facing the wall surface (53) of the counter electrode (50).

第3の発明は、第1の発明において、上記折返し部(45)の折返し線(47)は、端部(47a)が対向する電極(50)の壁面(53)に対して後退するように湾曲している。     According to a third invention, in the first invention, the folding line (47) of the folding part (45) is set so that the end part (47a) recedes with respect to the wall surface (53) of the opposing electrode (50). It is curved.

第3の発明では、金属電極(40)の第1桟部材(42)の先端に形成した折返し部(45)の折返し線(47)が、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)に対して後退するように湾曲している。折返し部(45)の折返し線(47)がこのように形成されることにより、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)から離れた位置に形成され、対向電極(50)の壁面(53)に対面しなくなる。     In the third invention, the folding line (47) of the folding part (45) formed at the tip of the first crosspiece member (42) of the metal electrode (40) is opposed to the end part (47a) of the folding line (47). The electrode (50) is curved so as to recede with respect to the wall surface (53). By forming the folding line (47) of the folding part (45) in this way, the end part (47a) of the folding line (47) is formed at a position away from the wall surface (53) of the counter electrode (50). , It will not face the wall surface (53) of the counter electrode (50).

第1の発明によれば、金属電極(40)の突出片(44)が突出する第1桟部材(42)の先端に、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)に対面しないように湾曲部を有する折返し線(47)で折り返した折返し部(45)を形成することとした。そのため、金属電極(40)の第1桟部材(42)の先端において折返し部(45)の折返し線(47)の端部(47a)に電界が集中してしまうことがなく、異常放電を防止することができる。従って、集塵効率を向上させることができる。     According to the first aspect of the present invention, the end (47a) of the fold line (47) is located at the tip of the first crosspiece member (42) from which the protruding piece (44) of the metal electrode (40) protrudes. The folded portion (45) folded by a folded line (47) having a curved portion so as not to face the wall surface (53) of the steel plate was formed. Therefore, the electric field does not concentrate on the end (47a) of the return line (47) of the return part (45) at the tip of the first crosspiece member (42) of the metal electrode (40), thereby preventing abnormal discharge. can do. Therefore, dust collection efficiency can be improved.

また、第2の発明によれば、金属電極(40)の突出片(44)が突出する第1桟部材(42)の先端側の外縁全体を角部が湾曲するように一体的に折り返すことにより、折返し部(45)の折返し線(47)の端部(47a)が金属電極(40)の第1桟部材(42)の対向電極()の壁面(53)に対面する部分に形成されないようにした。これにより、異常放電を防止可能な上述のような折返し部(45)を容易に形成することができる。     According to the second aspect of the invention, the entire outer edge on the front end side of the first crosspiece member (42) from which the protruding piece (44) of the metal electrode (40) protrudes is integrally folded so that the corner is curved. As a result, the end (47a) of the fold line (47) of the fold (45) is not formed on the portion facing the wall surface (53) of the counter electrode () of the first crosspiece member (42) of the metal electrode (40). I did it. Thereby, the above folding | returning part (45) which can prevent abnormal discharge can be formed easily.

また、第3の発明によれば、折返し部(45)の折返し線(47)を、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)に対して後退するように湾曲させることにより、折返し線(47)の端部(47a)が対向電極(50)の壁面(53)に対面しないようにした。これにより、異常放電を防止可能な上述のような折返し部(45)を容易に形成することができる。     Further, according to the third invention, the folding line (47) of the folding part (45) and the end part (47a) of the folding line (47) retreat with respect to the wall surface (53) of the counter electrode (50). In this way, the end (47a) of the folded line (47) is prevented from facing the wall surface (53) of the counter electrode (50). Thereby, the above folding | returning part (45) which can prevent abnormal discharge can be formed easily.

図1は、実施形態1に係る空気清浄機の全体構成を示す概略斜視図である。FIG. 1 is a schematic perspective view showing the overall configuration of the air cleaner according to the first embodiment. 図2は、実施形態1に係る空気清浄機の全体構成を示す概略側面図である。FIG. 2 is a schematic side view illustrating the overall configuration of the air cleaner according to the first embodiment. 図3は、実施形態1に係る集塵部の集塵電極及び高圧電極を示す斜視図である。FIG. 3 is a perspective view illustrating a dust collection electrode and a high-voltage electrode of the dust collection unit according to the first embodiment. 図4は、実施形態1に係る集塵部の一部を拡大して示す縦断面図である。FIG. 4 is an enlarged longitudinal sectional view showing a part of the dust collecting unit according to the first embodiment. 図5は、実施形態1に係る集塵電極の縦断面図である。FIG. 5 is a longitudinal sectional view of the dust collection electrode according to the first embodiment. 図6は、実施形態1に係る集塵電極の縦桟部材を示す平面図である。FIG. 6 is a plan view illustrating a vertical beam member of the dust collection electrode according to the first embodiment. 図7(A)及び(B)は、それぞれヘミング処理の様子を示す図であり、図7(A)は図5のA部を拡大し、図7(B)は図5のB部を拡大して示している。FIGS. 7A and 7B are views showing the state of the hemming process. FIG. 7A is an enlarged view of part A in FIG. 5, and FIG. 7B is an enlarged view of part B in FIG. As shown. 図8は、実施形態2に係る集塵電極の端部のヘミング処理の様子を示す図である。FIG. 8 is a diagram illustrating a state of hemming treatment at the end of the dust collection electrode according to the second embodiment. 図9は、実施形態3に係る集塵電極の縦断面図である。FIG. 9 is a longitudinal sectional view of the dust collection electrode according to the third embodiment. 図10は、図9の集塵電極の一部分におけるヘミング処理の様子を示す図である。FIG. 10 is a diagram showing a state of hemming processing in a part of the dust collection electrode of FIG.

以下、本発明の実施形態を図面に基づいて詳細に説明する。     Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

《発明の実施形態1》
本実施形態の空気清浄機(10)は、一般家庭や小規模店舗などで用いられる民生用の空気浄化装置であって、本発明に係る集塵装置を構成している。
Embodiment 1 of the Invention
The air cleaner (10) of the present embodiment is a consumer air purification device used in general households and small stores, and constitutes a dust collecting device according to the present invention.

〈空気清浄機の全体構成〉
図1及び図2に示すように、空気清浄機(10)は、ケーシング(20)を備えると共に、該ケーシング(20)の内部に収納されたプレフィルタ(11)と荷電部(12)と集塵部(30)と触媒フィルタ(13)と送風機(14)とを備えている。
<Overall configuration of the air purifier>
As shown in FIGS. 1 and 2, the air cleaner (10) includes a casing (20), and a prefilter (11), a charging unit (12), and a collection unit housed in the casing (20). A dust part (30), a catalyst filter (13), and a blower (14) are provided.

上記ケーシング(20)は、例えば、直方体状の横長の容器に形成され、前面が空気の吸込口(21)に形成され、背面が空気の吹出口(22)に形成され、内部が空気通路(23)に形成されている。そして、プレフィルタ(11)と荷電部(12)と集塵部(30)と触媒フィルタ(13)と送風機(14)とが吸込口(21)から吹出口(22)に向かって順に配置されている。     The casing (20) is formed in, for example, a rectangular parallelepiped horizontally long container, the front surface is formed in an air suction port (21), the back surface is formed in an air outlet (22), and the inside is an air passage ( 23) is formed. The prefilter (11), the charging part (12), the dust collecting part (30), the catalyst filter (13), and the blower (14) are arranged in order from the suction port (21) toward the blowout port (22). ing.

上記プレフィルタ(11)は、吸込口(21)からケーシング(20)内に吸込まれた空気に含まれる比較的大きな塵埃を捕集するためのフィルタを構成している。     The pre-filter (11) constitutes a filter for collecting relatively large dust contained in the air sucked into the casing (20) from the suction port (21).

上記荷電部(12)は、イオン化部を構成し、プレフィルタ(11)を通過した比較的小さな塵埃を帯電させるものである。この荷電部(12)は、図示しないが、例えば、複数のイオン化線と、複数の対向電極から構成され、該イオン化線と対向電極との間に直流電圧が印加されるように構成されている。イオン化線は、荷電部(12)の上端から下端に亘って設けられ、対向電極はイオン化線の間に配置されている。     The charging unit (12) forms an ionization unit and charges relatively small dust that has passed through the prefilter (11). Although not shown, the charging unit (12) includes, for example, a plurality of ionization lines and a plurality of counter electrodes, and is configured such that a DC voltage is applied between the ionization lines and the counter electrodes. . The ionization line is provided from the upper end to the lower end of the charging unit (12), and the counter electrode is disposed between the ionization lines.

上記集塵部(30)は、荷電部(12)で帯電した塵埃を吸着して捕集するものである。この集塵部(30)の詳細については、後述する。     The dust collection part (30) adsorbs and collects dust charged by the charging part (12). Details of the dust collection section (30) will be described later.

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

上記送風機(14)は、ケーシング(20)内の空気通路(23)において最下流側に配置されている。この送風機(14)は、室内空気をケーシング(20)内に吸い込み、清浄空気を室内に吹き出すためのものである。     The blower (14) is disposed on the most downstream side in the air passage (23) in the casing (20). The blower (14) is for sucking room air into the casing (20) and blowing out clean air into the room.

〈集塵部の構成〉
上記集塵部(30)の構造について詳細に説明する。図3乃至図5に示すように、集塵部(30)は、アース電極である集塵電極(40)と対向電極である高圧電極(50)とを備えている。
<Configuration of the dust collector>
The structure of the dust collection part (30) will be described in detail. As shown in FIGS. 3 to 5, the dust collection part (30) includes a dust collection electrode (40) as a ground electrode and a high voltage electrode (50) as a counter electrode.

上記集塵電極(40)は、導電性であるステンレスバネ鋼製の薄板金属で構成されている。この薄板金属の板厚は、0.2mm以下であり、好ましくは0.15mm以下である。つまり、集塵電極(40)は金属電極を構成している。一方、高圧電極(50)は、材質が導電性樹脂となっており、例えば射出成形等の手法を用いて成形されている。高圧電極(50)の材質は、微導電性樹脂が好ましく、特に体積抵抗率が10Ωcm以上1013Ωcm以下の樹脂であることが好ましい。また、集塵電極(40)と高圧電極(50)とは、一部が相互に挿入自在な差し込み構造に構成されている。 The dust collection electrode (40) is made of a conductive thin metal plate made of stainless spring steel. The sheet metal has a thickness of 0.2 mm or less, preferably 0.15 mm or less. That is, the dust collection electrode (40) constitutes a metal electrode. On the other hand, the high-voltage electrode (50) is made of a conductive resin, and is molded using a technique such as injection molding. The material of the high-voltage electrode (50) is preferably a slightly conductive resin, and particularly preferably a resin having a volume resistivity of 10 8 Ωcm to 10 13 Ωcm. Further, the dust collection electrode (40) and the high voltage electrode (50) are configured to have an insertion structure in which a part thereof can be inserted into each other.

上記集塵電極(40)及び高圧電極(50)のそれぞれは、外形が矩形状に形成されており、被処理気体としての空気が流れる複数の通風孔(46,56)を有する格子構造の基台部(41,51)と、該基台部(41,51)から各通風孔(46,56)の貫通方向に突出する複数の突出片(44,54)とを備えている。     Each of the dust collection electrode (40) and the high voltage electrode (50) is formed in a rectangular structure, and has a lattice structure having a plurality of ventilation holes (46, 56) through which air as a gas to be treated flows. A base part (41, 51) and a plurality of projecting pieces (44, 54) projecting from the base part (41, 51) in the through direction of the ventilation holes (46, 56) are provided.

具体的には、上記集塵電極(40)は、縦横に交叉して格子状に組み立てられた金属板(ステンレスバネ鋼板)からなる複数の横桟部材(42)(第1桟部材)と複数の縦桟部材(43)(第2桟部材)とによって構成されている。     Specifically, the dust collection electrode (40) includes a plurality of horizontal beam members (42) (first beam members) and a plurality of horizontal beam members (stainless steel plates) crossed vertically and horizontally and assembled in a lattice shape. The vertical beam member (43) (second beam member).

上記横桟部材(42)は、略長方形状の本体部(42a)と、該本体部(42a)の先端側(図5の下端側)から突出した複数の突出片(44)とを有している。複数の突出片(44)は、横桟部材(42)の本体部(42a)の幅方向(図5の左右方向)に間隔を空けて複数(本実施形態では、3つ)形成されている。一方、縦桟部材(43)は、略長方形状に形成され、横桟部材(42)のような突出片は形成されていない(図6参照)。     The crosspiece member (42) has a substantially rectangular main body (42a) and a plurality of projecting pieces (44) projecting from the front end side (lower end side in FIG. 5) of the main body (42a). ing. The plurality of projecting pieces (44) are formed in a plurality (three in this embodiment) at intervals in the width direction (left-right direction in FIG. 5) of the main body portion (42a) of the horizontal beam member (42). . On the other hand, the vertical beam member (43) is formed in a substantially rectangular shape, and no protruding piece like the horizontal beam member (42) is formed (see FIG. 6).

複数の横桟部材(42)と複数の縦桟部材(43)とは、互いのスリット(図5及び図6参照)にそれぞれ嵌め込まれることにより、縦横に交叉して四角格子状に組み立てられている。そして、横桟部材(42)の本体部(42a)と縦桟部材(43)とによって複数の通風孔(46)を有する格子構造の上記基台部(41)が構成され、横桟部材(42)の各突出片(44)によって基台部(41)から各通風孔(46)の貫通方向に突出する上記突出片(44)が構成されている。     The plurality of horizontal beam members (42) and the plurality of vertical beam members (43) are assembled into a square lattice by crossing vertically and horizontally by being fitted into the respective slits (see FIGS. 5 and 6). Yes. The base part (41) having a lattice structure having a plurality of ventilation holes (46) is constituted by the main body part (42a) and the vertical beam member (43) of the horizontal beam member (42), and the horizontal beam member ( Each protruding piece (44) of 42) constitutes the protruding piece (44) protruding from the base portion (41) in the through direction of each ventilation hole (46).

一方、上記高圧電極(50)は、枠体(51a)と、該枠体(51a)内において縦横に交叉して格子状に構成された複数の横桟部材(52)(第1桟部材)及び複数の縦桟部材(53)(第2桟部材)とによって構成されている。枠体(51a)と横桟部材(52)と縦桟部材(53)とは、導電性樹脂材料によって一体に形成されている。     On the other hand, the high-voltage electrode (50) includes a frame (51a) and a plurality of horizontal beam members (52) (first beam members) configured in a lattice shape by crossing vertically and horizontally in the frame (51a). And a plurality of vertical beam members (53) (second beam members). The frame (51a), the horizontal beam member (52), and the vertical beam member (53) are integrally formed of a conductive resin material.

上記枠体(51a)は、四角形状に形成されている。また、上記横桟部材(52)は、略長方形状の本体部(52a)と、該本体部(52a)の先端側(図3では上端側)から突出した複数の突出片(54)とを有している。複数の突出片(54)は、横桟部材(52)の本体部(52a)の幅方向に間隔を空けて複数(本実施形態では、9つ)形成されている。一方、縦桟部材(53)は、略長方形状に形成され、横桟部材(52)のような突出片は形成されていない。     The frame (51a) is formed in a quadrangular shape. The crosspiece member (52) includes a substantially rectangular main body (52a) and a plurality of projecting pieces (54) projecting from the front end side (the upper end side in FIG. 3) of the main body (52a). Have. The plurality of projecting pieces (54) are formed in a plurality (nine in this embodiment) at intervals in the width direction of the main body portion (52a) of the crosspiece member (52). On the other hand, the vertical beam member (53) is formed in a substantially rectangular shape, and no protruding piece like the horizontal beam member (52) is formed.

複数の横桟部材(52)と複数の縦桟部材(53)とは、枠体(51a)内において縦横に交叉して四角格子状に構成されている。そして、横桟部材(52)の本体部(52a)と縦桟部材(53)とによって複数の通風孔(56)を有する格子構造の基台部(51)が構成され、横桟部材(52)の各突出片(54)によって基台部(51)から各通風孔(56)の貫通方向に突出する上記突出片(54)が構成されている。     The plurality of horizontal beam members (52) and the plurality of vertical beam members (53) are configured in a quadrangular lattice shape by crossing vertically and horizontally in the frame (51a). And the base part (51) of the lattice structure which has a some ventilation hole (56) is comprised by the main-body part (52a) and the vertical beam member (53) of the horizontal beam member (52), and the horizontal beam member (52 The projecting pieces (54) projecting from the base portion (51) in the through direction of the ventilation holes (56) are constituted by the projecting pieces (54).

上記集塵部(30)は、上記集塵電極(40)及び高圧電極(50)の基台部(41,51)同士が対向した状態で固定されて組み立てられる(図1及び図2を参照)。この組み立て状態では、集塵電極(40)の突出片(44)が高圧電極(50)の通風孔(56)内に挿通され、高圧電極(50)の突出片(54)が集塵電極(40)の通風孔(46)内に挿通される。また、各基台部(41,51)は、空気通路(23)において空気流れと直交する方向に配置されている。つまり、各電極(40,50)は、各通風孔(46,56)が各基台部(41,51)を空気通路(23)の空気流れの方向に貫通するように配置されている。また、各縦桟部材(43,53)は、ケーシング(20)の上下方向に延び、各横桟部材(42,52)は、ケーシング(20)の幅方向に延びている。つまり、縦桟部材(43,53)と横桟部材(42,52)とは縦横に交差するように配列されている。     The dust collection part (30) is fixed and assembled with the base parts (41, 51) of the dust collection electrode (40) and the high voltage electrode (50) facing each other (see FIGS. 1 and 2). ). In this assembled state, the protruding piece (44) of the dust collecting electrode (40) is inserted into the ventilation hole (56) of the high voltage electrode (50), and the protruding piece (54) of the high voltage electrode (50) is inserted into the dust collecting electrode ( 40) is inserted into the ventilation hole (46). Moreover, each base part (41,51) is arrange | positioned in the direction orthogonal to an air flow in an air path (23). That is, each electrode (40, 50) is disposed such that each ventilation hole (46, 56) penetrates each base portion (41, 51) in the direction of air flow in the air passage (23). Each vertical beam member (43, 53) extends in the vertical direction of the casing (20), and each horizontal beam member (42, 52) extends in the width direction of the casing (20). That is, the vertical beam members (43, 53) and the horizontal beam members (42, 52) are arranged so as to intersect vertically and horizontally.

図4に示すように、上記各縦桟部材(43,53)は、集塵電極(40)の基台部(41)と高圧電極(50)の基台部(51)とが組み立てられた状態では、同一平面上に位置するように形成されている。また、この組み立て状態において、両者の縦桟部材(43,53)は、互いに接触することなく、所定の間隔を置いて配置される。一方、集塵電極(40)及び高圧電極(50)の横桟部材(42,52)は、集塵電極(40)の基台部(41)と高圧電極(50)の基台部(51)とが組み立てられた状態では、縦桟部材(43,53)の延びる縦方向(図4の左右方向)に、交互に配置されるように形成されている。つまり、集塵電極(40)の横桟部材(42)は、高圧電極(50)の通風孔(56)の縦方向(図4の左右方向)の中央部に位置し、高圧電極(50)の横桟部材(52)は、集塵電極(40)の通風孔(46)の縦方向(図4の左右方向)の中央部に位置している。     As shown in FIG. 4, each of the vertical beam members (43, 53) is formed by assembling the base part (41) of the dust collecting electrode (40) and the base part (51) of the high-voltage electrode (50). In the state, they are formed so as to be located on the same plane. In this assembled state, the two vertical beam members (43, 53) are arranged at a predetermined interval without contacting each other. On the other hand, the crosspiece members (42, 52) of the dust collection electrode (40) and the high voltage electrode (50) are composed of the base part (41) of the dust collection electrode (40) and the base part (51 of the high voltage electrode (50)). ) Are assembled so that they are alternately arranged in the longitudinal direction (left-right direction in FIG. 4) in which the longitudinal beam members (43, 53) extend. That is, the crosspiece member (42) of the dust collection electrode (40) is located in the center of the ventilation hole (56) of the high voltage electrode (50) in the vertical direction (left and right direction in FIG. 4), and the high voltage electrode (50). The horizontal beam member (52) is located at the center in the vertical direction (left-right direction in FIG. 4) of the ventilation hole (46) of the dust collection electrode (40).

上記各突出片(44,54)は、相対する電極(50,40)の通風孔(46,56)の壁面を構成する縦桟部材(43,53)と横桟部材(42,52)とによって囲まれる。つまり、各突出片(44,54)は、通風孔(46,56)の内部中央に位置する。そして、突出片(44,54)と縦桟部材(43,53)及び横桟部材(42,52)との間に電位差が与えられる。つまり、突出片(44,54)の周囲には、通風孔(46,56)の横断面において電界が放射状に形成される。     Each protruding piece (44,54) includes a vertical beam member (43,53) and a horizontal beam member (42,52) constituting the wall surface of the vent hole (46,56) of the opposing electrode (50,40). Surrounded by. That is, each protruding piece (44, 54) is located in the center of the inside of the ventilation hole (46, 56). And a potential difference is given between the protruding piece (44, 54), the vertical beam member (43, 53) and the horizontal beam member (42, 52). That is, an electric field is radially formed around the protruding piece (44, 54) in the cross section of the ventilation hole (46, 56).

また、図5及び図6に示すように、金属板によって金属電極に構成された集塵電極(40)の縦桟部材(43)及び横桟部材(42)の端部には、所謂ヘミング処理が施されている。     Further, as shown in FIGS. 5 and 6, so-called hemming treatment is applied to the ends of the vertical beam member (43) and the horizontal beam member (42) of the dust collecting electrode (40) configured as a metal electrode by a metal plate. Is given.

具体的には、図6に示すように、縦桟部材(43)では、空気流れの上流側の端部及び下流側の端部にそれぞれ通風孔(46)の軸心方向に折り返された折返し部(43a,43b)が形成されている。一方、図5に示すように、横桟部材(42)では、空気流れの上流側の端部(図5では上端部)に通風孔(46)の軸心方向(即ち、空気流れ方向)に折り返された折返し部(42b)が形成されている。また、横桟部材(42)では、空気流れの下流側の端部(図5では下端部)であって突出片(44)が突出する先端側に折返し部(45)が形成されている。     Specifically, as shown in FIG. 6, in the vertical beam member (43), the folding is performed by folding the air flow at the upstream end and the downstream end in the axial direction of the ventilation hole (46). Portions (43a, 43b) are formed. On the other hand, as shown in FIG. 5, in the crosspiece member (42), the air flow upstream end (upper end in FIG. 5) is in the axial direction of the ventilation hole (46) (that is, the air flow direction). A folded portion (42b) that is folded is formed. Further, in the crosspiece member (42), a folded portion (45) is formed at the end portion on the downstream side of the air flow (the lower end portion in FIG. 5) and on the tip side from which the protruding piece (44) protrudes.

上記折返し部(45)は、横桟部材(42)の突出片(44)が突出する先端側の外縁全体を、角部が湾曲するように一体的に折り返すことによって形成されている。具体的には、図5に示すように、折返し部(45)は、横桟部材(42)の先端側の外縁に沿って横桟部材(42)の幅方向の一端から他端に亘って延びる折返し線(47)で、横桟部材(42)の先端側の端辺を一体的に折り返すことによって形成されている。図7(A)、(B)に示すように、折返し部(45)の折返し線(47)は湾曲部を有し、尖った角部を有していない。これにより、折返し部(45)の角部は湾曲した湾曲形状に形成される。     The folded portion (45) is formed by integrally folding the entire outer edge on the front end side where the protruding piece (44) of the horizontal beam member (42) protrudes so that the corner portion is curved. Specifically, as shown in FIG. 5, the folded portion (45) extends from one end to the other end in the width direction of the horizontal beam member (42) along the outer edge on the front end side of the horizontal beam member (42). The extending folding line (47) is formed by integrally folding the end of the crosspiece member (42) on the front end side. As shown in FIGS. 7A and 7B, the folding line (47) of the folding part (45) has a curved part and does not have a sharp corner. Thereby, the corner | angular part of a folding | turning part (45) is formed in the curved shape.

具体的には、図7(A)に拡大して示すように、突出片(44)の先端部(44a)と側端部(44b)との間の角部では、折返し部(45)の折返し線(47)が湾曲して湾曲部に構成されている。また、図7(B)に拡大して示すように、突出片(44)の側端部(44b)と本体部(42a)の先端部(42c)との間の角部では、折返し部(45)の折返し線(47)が湾曲して湾曲部に構成されている。このような湾曲部を有する折返し線(47)で集塵電極(40)の横桟部材(42)の先端側の外縁全体が一体的に折り返されることにより、折返し部(45)は、角部が湾曲した形状となる。     Specifically, as shown in an enlarged view in FIG. 7A, at the corner between the tip end portion (44a) and the side end portion (44b) of the protruding piece (44), the folded portion (45) The folding line (47) is curved to form a curved portion. Further, as shown in an enlarged view in FIG. 7B, at the corner between the side end portion (44b) of the protruding piece (44) and the tip end portion (42c) of the main body portion (42a), the folded portion ( The folding line (47) of 45) is curved to form a curved portion. The entire outer edge on the front end side of the horizontal beam member (42) of the dust collecting electrode (40) is integrally folded by the folded line (47) having such a curved portion, so that the folded portion (45) becomes a corner portion. Becomes a curved shape.

以上のように、集塵電極(40)では、縦桟部材(43)及び横桟部材(42)の端部に折返し部(43a,43b,42b,45)がそれぞれ形成されている。これにより、集塵電極(40)の縦桟部材(43)及び横桟部材(42)の各端部に尖ったエッジがなくなる。     As described above, in the dust collection electrode (40), the folded portions (43a, 43b, 42b, 45) are formed at the ends of the vertical beam member (43) and the horizontal beam member (42), respectively. Thereby, there is no sharp edge at each end of the vertical beam member (43) and the horizontal beam member (42) of the dust collecting electrode (40).

−運転動作−
次に、上記空気清浄機(10)の空気清浄動作について説明する。
-Driving action-
Next, the air cleaning operation of the air cleaner (10) will be described.

図1及び図2に示すように、送風機(14)を駆動すると、被処理気体である室内空気がケーシング(20)の空気通路(23)に吸引され、該空気通路(23)を流れる。また、空気清浄機(10)では、荷電部(12)のイオン化線と対向電極と間に直流電圧が印加され、集塵部(30)の集塵電極(40)と高圧電極(50)との間に直流電圧が印加される。     As shown in FIGS. 1 and 2, when the blower (14) is driven, the indoor air that is the gas to be treated is sucked into the air passage (23) of the casing (20) and flows through the air passage (23). In the air cleaner (10), a DC voltage is applied between the ionization line of the charging part (12) and the counter electrode, and the dust collecting electrode (40) and the high voltage electrode (50) of the dust collecting part (30) A DC voltage is applied during

ケーシング(20)の空気通路(23)に吸引された室内空気は、先ずプレフィルタ(11)を通過する。プレフィルタ(11)は、室内空気に含まれる比較的大きな塵埃を捕集する。プレフィルタ(11)を通過した室内空気は、荷電部(12)に流れる。この荷電部(12)では、プレフィルタ(11)を通過した比較的小さな塵埃が正極に帯電し、この帯電した塵埃が下流側に流れることになる。     The room air sucked into the air passage (23) of the casing (20) first passes through the prefilter (11). The prefilter (11) collects relatively large dust contained in the room air. The room air that has passed through the prefilter (11) flows to the charging section (12). In the charging unit (12), relatively small dust that has passed through the prefilter (11) is charged to the positive electrode, and the charged dust flows downstream.

続いて、帯電した塵埃は、室内空気と共に集塵部(30)に流れる。集塵部(30)に流入した空気は、先ず、集塵電極(40)の基台部(41)の通風孔(46)を流れる。この通風孔(46)では、空気が高圧電極(50)の突出片(54)の周囲を流れる。ここで、高圧電極(50)の突出片(54)と、集塵電極(40)の基台部(41)との間には電界が形成され、集塵電極(40)がアース電極となっている。従って、正極に帯電している塵埃は、集塵電極(40)の基台部(41)、即ち横桟部材(42)や縦桟部材(43)に誘引される。その結果、集塵電極(40)の通風孔(46)を空気が流通する間には、塵埃がこれらの横桟部材(42)や縦桟部材(43)の表面に付着して捕集される。     Subsequently, the charged dust flows into the dust collecting part (30) together with the room air. The air flowing into the dust collection part (30) first flows through the ventilation hole (46) of the base part (41) of the dust collection electrode (40). In this ventilation hole (46), air flows around the protruding piece (54) of the high-voltage electrode (50). Here, an electric field is formed between the protruding piece (54) of the high-voltage electrode (50) and the base part (41) of the dust collecting electrode (40), and the dust collecting electrode (40) serves as a ground electrode. ing. Therefore, the dust charged in the positive electrode is attracted to the base part (41) of the dust collecting electrode (40), that is, the horizontal beam member (42) and the vertical beam member (43). As a result, while air flows through the ventilation hole (46) of the dust collecting electrode (40), dust adheres to the surface of these horizontal beam members (42) and vertical beam members (43) and is collected. The

集塵電極(40)の基台部(41)を通過した空気は、高圧電極(50)の基台部(51)の通風孔(56)に流れる。この通風孔(56)では、空気が集塵電極(40)の突出片(44)の周囲を流れる。ここで、高圧電極(50)の基台部(51)と、集塵電極(40)の突出片(44)との間には電界が形成されているので、未だ空気中に残存している塵埃が集塵電極(40)の突出片(44)の表面に付着して捕集される。     The air that has passed through the base part (41) of the dust collection electrode (40) flows into the ventilation hole (56) of the base part (51) of the high-voltage electrode (50). In this ventilation hole (56), air flows around the protruding piece (44) of the dust collecting electrode (40). Here, since an electric field is formed between the base (51) of the high-voltage electrode (50) and the protruding piece (44) of the dust collecting electrode (40), it still remains in the air. Dust adheres to the surface of the protruding piece (44) of the dust collecting electrode (40) and is collected.

集塵部(30)で塵埃が除去された空気は、触媒フィルタ(13)を流れる。触媒フィルタ(13)では、空気中の有害物質や臭気物質が分解除去される。以上のようにして清浄化された空気は、送風機(14)を通過して、吹出口(22)より室内へ供給される。空気清浄機(10)は、このような動作を行うことで、室内空気を清浄化する。     The air from which dust has been removed by the dust collecting part (30) flows through the catalyst filter (13). The catalytic filter (13) decomposes and removes harmful substances and odorous substances in the air. The air purified as described above passes through the blower (14) and is supplied into the room from the blower outlet (22). The air cleaner (10) cleans room air by performing such an operation.

ここで、集塵部(30)の集塵電極(40)では、縦桟部材(43)及び横桟部材(42)の端部に折返し部(43a,43b,42b,45)が形成されて尖ったエッジが存在しないため、電界が集中することはない。特に、集塵電極(40)の横桟部材(42)の先端側には、該先端側の外縁全体を、角部が湾曲するように一体的に折り返した折返し部(45)が形成されている。このように折返し部(45)を形成することにより、横桟部材(42)の幅方向の一端から他端に亘って折返し部(45)が形成されることとなる。よって、折返し部(45)の折返し線(47)の端部(47a)は、横桟部材(42)の幅方向の端部に形成され、対向電極である高圧電極(50)の通風孔(56)の壁面である縦桟部材(53)には対面しない。言い換えると、折返し部(45)の折返し線(47)の端部(47a)は、横桟部材(42)の高圧電極(50)の縦桟部材(53)に対面する位置には形成されない。     Here, in the dust collecting electrode (40) of the dust collecting portion (30), the folded portions (43a, 43b, 42b, 45) are formed at the ends of the vertical beam member (43) and the horizontal beam member (42). Since there are no sharp edges, the electric field does not concentrate. In particular, a folded portion (45) is formed on the distal end side of the crosspiece member (42) of the dust collecting electrode (40), and the entire outer edge of the distal end side is folded back so that the corner portion is curved. Yes. By forming the folded portion (45) in this way, the folded portion (45) is formed from one end to the other end in the width direction of the crosspiece member (42). Therefore, the end part (47a) of the folding line (47) of the folding part (45) is formed at the end part in the width direction of the crosspiece member (42), and the ventilation hole ( 56) Do not face the vertical beam member (53), which is the wall surface. In other words, the end portion (47a) of the folding line (47) of the folding portion (45) is not formed at a position facing the vertical beam member (53) of the high-voltage electrode (50) of the horizontal beam member (42).

ところで、通常、金属板を折り返すと、その折返し線の端部は尖った形状となる。そのため、折返し部(45)の折返し線(47)の端部(47a)が高圧電極(50)の縦桟部材(53)に対向していると、尖った折返し線(47)の端部(47a)に電界が集中して異常放電が生じるおそれがあった。しかしながら、上述のような折返し部(45)を形成することにより、折返し部(45)の折返し線(47)の端部(47a)が高圧電極(50)の縦桟部材(53)に対面する位置には形成されないため、折返し線(47)の端部(47a)に電界が集中してしまうことがない。従って、集塵電極(40)の各突出片(44)と高圧電極(50)の各縦桟部材(53)及び横桟部材(52)との間に均一に電界が形成される。その結果、集塵部(30)における集塵効率が向上する。     By the way, usually, when the metal plate is folded, the end of the folding line has a sharp shape. Therefore, when the end (47a) of the fold line (47) of the fold portion (45) faces the vertical beam member (53) of the high-voltage electrode (50), the end of the sharp fold line (47) ( There is a risk that the electric field concentrates on 47a) and abnormal discharge occurs. However, by forming the folded portion (45) as described above, the end portion (47a) of the folded line (47) of the folded portion (45) faces the vertical beam member (53) of the high-voltage electrode (50). Since it is not formed at the position, the electric field does not concentrate on the end (47a) of the folded line (47). Therefore, an electric field is uniformly formed between each protruding piece (44) of the dust collection electrode (40) and each vertical beam member (53) and horizontal beam member (52) of the high-voltage electrode (50). As a result, the dust collection efficiency in the dust collection section (30) is improved.

なお、本実施形態では、集塵部(30)の高圧電極(50)に正の電圧を印加し、荷電部(12)で正極に帯電させた塵埃をアース電極である集塵電極(40)に付着させるようにしたが、本発明は以下のように構成してもよい。つまり、上記実施形態においては、荷電部(12)で塵埃を負極に帯電させる一方、集塵電極(40)をアース電極として高圧電極(50)に負の電圧を印加するようにしてもよい。この場合、負極に帯電した塵埃は、集塵部(30)の集塵電極(40)に付着される。     In the present embodiment, a positive voltage is applied to the high voltage electrode (50) of the dust collecting part (30), and the dust charged to the positive electrode by the charging part (12) is used as a ground electrode. However, the present invention may be configured as follows. In other words, in the above embodiment, the charging unit (12) may charge the negative electrode while the negative electrode may be applied to the high voltage electrode (50) using the dust collecting electrode (40) as a ground electrode. In this case, the dust charged on the negative electrode adheres to the dust collecting electrode (40) of the dust collecting portion (30).

−実施形態1の効果−
本実施形態によれば、金属電極である集塵電極(40)の突出片(44)が突出する横桟部材(42)の先端に、折返し線(47)の端部(47a)が対向電極である高圧電極(50)の通風孔(56)の壁面である縦桟部材(53)に対面しないように湾曲部を有する折返し線(47)で折り返した折返し部(45)を形成することとした。そのため、集塵電極(40)の横桟部材(42)の先端において折返し部(45)の折返し線(47)の端部(47a)に電界が集中してしまうことがなく、異常放電を防止することができる。従って、集塵効率を向上させることができる。
-Effect of Embodiment 1-
According to the present embodiment, the end (47a) of the folding line (47) is located at the tip of the horizontal beam member (42) from which the protruding piece (44) of the dust collecting electrode (40), which is a metal electrode, protrudes. Forming a folded portion (45) folded by a folded line (47) having a curved portion so as not to face the vertical beam member (53) which is the wall surface of the ventilation hole (56) of the high voltage electrode (50) which is did. Therefore, the electric field does not concentrate on the end (47a) of the folding line (47) of the folding part (45) at the tip of the horizontal beam member (42) of the dust collecting electrode (40), preventing abnormal discharge. can do. Therefore, dust collection efficiency can be improved.

また、本実施形態によれば、集塵電極(40)の突出片(44)が突出する横桟部材(42)の先端側の外縁全体を角部が湾曲するように一体的に折り返すことにより、折返し部(45)の折返し線(47)の端部(47a)が集塵電極(40)の横桟部材(42)の対向電極である高圧電極(50)の通風孔(56)の壁面(縦桟部材(53))に対面する部分に形成されないようにした。これにより、異常放電を防止可能な上述のような折返し部(45)を容易に形成することができる。     Further, according to the present embodiment, the entire outer edge on the front end side of the horizontal beam member (42) from which the protruding piece (44) of the dust collecting electrode (40) protrudes is integrally folded so that the corner portion is curved. The wall surface of the vent hole (56) of the high voltage electrode (50) in which the end portion (47a) of the folding line (47) of the folding portion (45) is the counter electrode of the crosspiece member (42) of the dust collecting electrode (40) It was made not to form in the part which faces (vertical crosspiece member (53)). Thereby, the above folding | returning part (45) which can prevent abnormal discharge can be formed easily.

《発明の実施形態2》
実施形態2の空気清浄機(10)は、実施形態1において、折返し部(45)の形状を変更したものである。
<< Embodiment 2 of the Invention >>
The air cleaner (10) of Embodiment 2 is obtained by changing the shape of the folded portion (45) in Embodiment 1.

具体的には、図8に示すように、実施形態2では、折返し部(45)は、湾曲部に複数の切り込みが形成されている。複数の切り込みは、折返し部(45)の折返し線(47)の外側において外縁から折返し線(47)に向かって延び、折返し線(47)に重ならないように形成されている。このように、ヘミング加工の際に、裂けるおそれのある折返し部(45)の湾曲部に予め切り込みを形成することにより、ヘミング加工の際に折返し部(45)に裂け目が形成されるのを防止することができる。ヘミング加工の際に折返し部(45)の湾曲部に裂け目が形成されると、尖ったエッジが形成されて該エッジに電界が集中するおそれがある。しかしながら、上述のように予め切り込みを形成することによってヘミング加工の際における折返し部(45)の裂けを防止できるため、ヘミング加工を容易に行うことができる。     Specifically, as shown in FIG. 8, in the second embodiment, the folded portion (45) is formed with a plurality of cuts in the curved portion. The plurality of cuts extend from the outer edge toward the fold line (47) outside the fold line (47) of the fold portion (45), and are formed so as not to overlap the fold line (47). In this way, by forming a notch in the curved portion of the folded portion (45) that may be torn during hemming processing, it is possible to prevent a tear from being formed in the folded portion (45) during hemming processing. can do. If a tear is formed in the curved portion of the folded portion (45) during the hemming process, a sharp edge may be formed and the electric field may concentrate on the edge. However, since the notch is formed in advance as described above, the folded portion (45) can be prevented from tearing during the hemming process, so that the hemming process can be easily performed.

《発明の実施形態3》
実施形態3の空気清浄機(10)は、実施形態1において、折返し部(45)の構成を変更したものである。
<< Embodiment 3 of the Invention >>
The air cleaner (10) according to the third embodiment is obtained by changing the configuration of the folded portion (45) in the first embodiment.

図9に示すように、実施形態3では、折返し部(45)は、集塵電極(40)の横桟部材(42)の各突出片(44)にそれぞれ個別に形成されている。また、横桟部材(42)の本体部(42a)の先端部(42c)には、折返し部(48)が形成されている。     As shown in FIG. 9, in Embodiment 3, the folding | turning part (45) is each formed in each protrusion piece (44) of the horizontal crosspiece member (42) of a dust collection electrode (40), respectively. Further, a folded portion (48) is formed at the tip end portion (42c) of the main body portion (42a) of the crosspiece member (42).

横桟部材(42)の各突出片(44)の折返し部(45)は、各突出片(44)の端辺全体を一体的に折り返すことによって形成されている。各折返し部(45)の折返し線(47)は、U字状の突出片(44)の外縁に沿ってU字状に形成されて、角部が湾曲した湾曲部に構成されている。また、各折返し部(45)の折返し線(47)の2つの端部(47a)は、U字の内側方向に湾曲している。このように各折返し部(45)の折返し線(47)が形成されることにより、該折返し線(47)の端部(47a)は、対向する高圧電極(50)の通風孔(56)を形成する壁面である縦桟部材(53)に対面する対面位置(図9(B)の二点鎖線X)ではなく、縦桟部材(53)に対して後退した後退位置(図9(B)の二点鎖線Y)に設けられる。     The folded portion (45) of each protruding piece (44) of the crosspiece member (42) is formed by integrally folding the entire end side of each protruding piece (44). The fold line (47) of each fold portion (45) is formed in a U shape along the outer edge of the U-shaped projecting piece (44), and is configured as a curved portion having a curved corner portion. Further, the two end portions (47a) of the fold line (47) of each fold portion (45) are curved inwardly of the U-shape. By forming the fold line (47) of each fold portion (45) in this way, the end portion (47a) of the fold line (47) passes through the ventilation hole (56) of the opposing high voltage electrode (50). Not the facing position (two-dot chain line X in FIG. 9B) facing the vertical beam member (53) which is the wall surface to be formed, but the retracted position (FIG. 9B) retracted with respect to the vertical beam member (53) Of the two-dot chain line Y).

ところで、上述したように、通常、金属板を折り返すと、その折返し線の端部は尖った形状となる。そのため、上記折返し部(45)においても、折返し線(47)の端部(47a)は尖った形状となり、このような尖った部分には電界が集中し易くなる。しかしながら、上記折返し部(45)は、上述のような湾曲した折返し線(47)で折り返されている。そのため、従来の直線状の折返し線で折り返した場合に比べて、折返し線(47)の端部(47a)と高圧電極(50)の縦桟部材(53)との距離が遠くなる。よって、本実施形態の折返し部(45)では、従来の直線状の折返し線で折り返されていた折返し部に比べて、折返し線(47)の端部(47a)に電界が集中しなくなる。     By the way, as described above, when the metal plate is folded, the end of the folding line usually has a sharp shape. Therefore, also in the folded portion (45), the end portion (47a) of the folded line (47) has a sharp shape, and the electric field tends to concentrate on such a sharp portion. However, the folded portion (45) is folded at the curved folded line (47) as described above. Therefore, the distance between the end portion (47a) of the folding line (47) and the vertical beam member (53) of the high-voltage electrode (50) becomes longer than in the case of folding with a conventional linear folding line. Therefore, in the folded portion (45) of the present embodiment, the electric field does not concentrate on the end portion (47a) of the folded line (47), compared to the folded portion that is folded by the conventional linear folded line.

また、本実施形態では、折返し線(47)は、突出片(44)の先端部(44a)と側端部(44b)との間の角部に対応する部分が湾曲している。つまり、折返し後、突出片(44)の先端部(44a)と側端部(44b)との間に尖った角部が形成されないように、折返し線(47)が湾曲している。このように折返し部(45)の角部を湾曲形状に形成することにより、角部に電界が集中しなくなる。     In the present embodiment, the folding line (47) has a curved portion corresponding to the corner between the tip end portion (44a) and the side end portion (44b) of the protruding piece (44). That is, the folded line (47) is curved so that a sharp corner is not formed between the tip end portion (44a) and the side end portion (44b) of the protruding piece (44) after the folding. By thus forming the corners of the folded portion (45) in a curved shape, the electric field does not concentrate on the corners.

以上のように、実施形態3では、金属電極である集塵電極(40)の横桟部材(42)の各突出片(44)に形成した折返し部(45)の折返し線(47)が、端部(47a)が対向する高圧電極(50)の通風孔(56)の壁面を構成する縦桟部材(53)に対して後退するように湾曲している。折返し部(45)の折返し線(47)がこのように形成されることにより、折返し線(47)の端部(47a)が対向する高圧電極(50)の通風孔(56)を構成する壁面である縦桟部材(53)から離れた位置に形成され、該縦桟部材(53)に対面しなくなる。これにより、集塵電極(40)の横桟部材(42)の先端において折返し部(45)の折返し線(47)の端部(47a)に電界が集中してしまうことがなく、異常放電を防止することができる。従って、集塵効率を向上させることができる。また、実施形態3によれば、上述のような異常放電を防止可能な折返し部(45)を容易に形成することができる。     As described above, in Embodiment 3, the folding line (47) of the folding part (45) formed on each protruding piece (44) of the crosspiece member (42) of the dust collecting electrode (40) that is a metal electrode is The end (47a) is curved so as to recede with respect to the longitudinal beam member (53) constituting the wall surface of the ventilation hole (56) of the opposing high voltage electrode (50). The wall surface which forms the ventilation hole (56) of the high voltage electrode (50) which the edge part (47a) of a folding line (47) opposes by forming the folding line (47) of a folding part (45) in this way Is formed at a position away from the vertical beam member (53), and does not face the vertical beam member (53). As a result, the electric field does not concentrate on the end (47a) of the folding line (47) of the folding part (45) at the tip of the horizontal beam member (42) of the dust collecting electrode (40), and abnormal discharge is prevented. Can be prevented. Therefore, dust collection efficiency can be improved. Moreover, according to Embodiment 3, the folding | turning part (45) which can prevent the above abnormal discharges can be formed easily.

《その他の実施形態》
上述した実施形態については以下のような構成としてもよい。
<< Other Embodiments >>
About embodiment mentioned above, it is good also as following structures.

上記各実施形態において、集塵電極(40)だけでなく、高圧電極(50)の横桟部材(52)と縦桟部材(53)とを金属板によって形成して高圧電極(50)を金属電極に構成してもよい。その場合には、高圧電極(50)の横桟部材(52)に上記各実施形態のような折返し部(45)を形成する。その結果、異常放電が抑制され、集塵効率が向上する。     In each of the above embodiments, not only the dust collection electrode (40) but also the horizontal beam member (52) and the vertical beam member (53) of the high voltage electrode (50) are formed of a metal plate to form the high voltage electrode (50) as a metal. You may comprise in an electrode. In that case, the folded portion (45) as in each of the above embodiments is formed on the crosspiece member (52) of the high-voltage electrode (50). As a result, abnormal discharge is suppressed and dust collection efficiency is improved.

また、上記実施形態では、集塵電極(40)の材質にステンレスバネ鋼を用いたが、本発明はこれに限らず、他の導電性金属を用いるようにしてもよい。     Moreover, in the said embodiment, although stainless spring steel was used for the material of the dust collection electrode (40), this invention is not restricted to this, You may make it use another conductive metal.

また、上記実施形態において、集塵電極(40)の基台部(41)及び突出片(44)の板厚は0.2mmに限られるものではないことは勿論である。     Moreover, in the said embodiment, of course, the board thickness of the base part (41) of a dust collection electrode (40) and a protrusion piece (44) is not restricted to 0.2 mm.

なお、以上の実施形態は、本質的に好ましい例示であって、本発明、その適用物、あるいはその用途の範囲を制限することを意図するものではない。     In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

以上説明したように、本発明は、帯電した塵埃を捕集する集塵装置について有用である。     As described above, the present invention is useful for a dust collector that collects charged dust.

10 空気清浄機(集塵装置)
23 空気通路
40 集塵電極(金属電極)
42 横桟部材(第1桟部材)
42a 本体部
43 縦桟部材
44 突出片
45 折返し部
46 通風孔
47 折返し線
47a 端部
50 高圧電極
52 横桟部材
52a 本体部
53 縦桟部材(第2桟部材、壁面)
54 突出片
56 通風孔
10 Air cleaner (dust collector)
23 Air passage
40 Dust collection electrode (metal electrode)
42 Horizontal beam member (first beam member)
42a body
43 Vertical beam member
44 Projection piece
45 Folding part
46 Ventilation holes
47 Folding line
47a end
50 High voltage electrode
52 Crosspiece members
52a body
53 Vertical beam member (second beam member, wall surface)
54 Protruding piece
56 Ventilation holes

Claims (3)

複数の第1桟部材(42,52)と複数の第2桟部材(43,53)とが複数の通風孔(46,56)が形成されるように縦横に交叉して格子状に構成された互いに対向する一対の電極(40,50)を備え、
上記各電極(40,50)の第1桟部材(42,52)は、本体部(42a,52a)と、該本体部(42a,52a)の先端から突出して対向する電極(50,40)の通風孔(46,56)に延びる複数の突出片(44,54)とを有し、
上記一対の電極(40,50)が塵埃を捕集するために電界を形成するように構成された集塵装置であって、
上記一対の電極(40,50)の少なくとも一方は、両桟部材(42,43)が金属板によって形成された金属電極(40)に構成され、
上記金属電極(40)の第1桟部材(42)の先端には、端辺を折り返した折返し部(45)であって、折返し線(47)が該折返し線(47)の端部(47a)が対向する電極(50)の壁面(53)に対面しないように湾曲部を有する折返し部(45)が形成されている
ことを特徴とする集塵装置。
The plurality of first crosspiece members (42,52) and the plurality of second crosspiece members (43,53) are configured in a lattice shape by crossing vertically and horizontally so that a plurality of ventilation holes (46,56) are formed. Provided with a pair of opposing electrodes (40, 50),
The first crosspiece member (42,52) of each of the electrodes (40,50) includes a main body portion (42a, 52a) and an electrode (50,40) which protrudes from the tip of the main body portion (42a, 52a) and faces each other. A plurality of projecting pieces (44,54) extending to the ventilation holes (46,56) of
A dust collector configured to form an electric field for collecting dust, wherein the pair of electrodes (40, 50),
At least one of the pair of electrodes (40, 50) is configured as a metal electrode (40) in which both crosspiece members (42, 43) are formed of a metal plate,
At the tip of the first crosspiece member (42) of the metal electrode (40), there is a folded portion (45) whose end is folded back, and the folded line (47) is the end portion (47a) of the folded line (47). ) Is formed with a folded portion (45) having a curved portion so as not to face the wall surface (53) of the opposing electrode (50).
請求項1において、
上記折返し部(45)は、上記金属電極(40)の第1桟部材(42)の先端側の外縁全体を、角部が湾曲するように一体的に折り返すことによって形成されている
ことを特徴とする集塵装置。
In claim 1,
The folded portion (45) is formed by folding the entire outer edge of the first crosspiece member (42) of the metal electrode (40) integrally so that the corner portion is curved. Dust collector.
請求項1において、
上記折返し部(45)の折返し線(47)は、端部(47a)が対向する電極(50)の壁面(53)に対して後退するように湾曲している
ことを特徴とする集塵装置。
In claim 1,
The folding line (47) of the folding part (45) is curved so that the end part (47a) recedes with respect to the wall surface (53) of the opposing electrode (50). .
JP2011267857A 2011-12-07 2011-12-07 Dust collector Pending JP2013119055A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018140346A (en) * 2017-02-28 2018-09-13 株式会社富士通ゼネラル Electric dust collector
CN108954583A (en) * 2018-05-28 2018-12-07 东莞市宇洁新材料有限公司 A kind of return air inlet with purification device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000279849A (en) * 1999-03-29 2000-10-10 Sumitomo Heavy Ind Ltd Electric precipitator
JP2008018426A (en) * 2006-06-15 2008-01-31 Daikin Ind Ltd Dust collector
JP2009082911A (en) * 2007-09-11 2009-04-23 Daikin Ind Ltd Dust collector
JP2009178626A (en) * 2008-01-29 2009-08-13 Panasonic Corp Electrostatic dust collector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000279849A (en) * 1999-03-29 2000-10-10 Sumitomo Heavy Ind Ltd Electric precipitator
JP2008018426A (en) * 2006-06-15 2008-01-31 Daikin Ind Ltd Dust collector
JP2009082911A (en) * 2007-09-11 2009-04-23 Daikin Ind Ltd Dust collector
JP2009178626A (en) * 2008-01-29 2009-08-13 Panasonic Corp Electrostatic dust collector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018140346A (en) * 2017-02-28 2018-09-13 株式会社富士通ゼネラル Electric dust collector
CN108954583A (en) * 2018-05-28 2018-12-07 东莞市宇洁新材料有限公司 A kind of return air inlet with purification device

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