JP2009226297A - Dust collecting electrode for dry-type electric dust collector - Google Patents

Dust collecting electrode for dry-type electric dust collector Download PDF

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JP2009226297A
JP2009226297A JP2008073775A JP2008073775A JP2009226297A JP 2009226297 A JP2009226297 A JP 2009226297A JP 2008073775 A JP2008073775 A JP 2008073775A JP 2008073775 A JP2008073775 A JP 2008073775A JP 2009226297 A JP2009226297 A JP 2009226297A
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collecting electrode
dust collecting
dust
electrode plate
channel material
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JP4877527B2 (en
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Mamoru Miwa
守 三輪
Daisuke Fukuie
大輔 福家
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Hitachi Plant Technologies Ltd
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Hitachi Plant Technologies Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collecting electrode for a dry-type electric dust collector, for preventing cracks of an element generated by a hammering device and preventing falling. <P>SOLUTION: The dust collecting electrode is configured by planarly arraying dust collecting electrode elements in a rugged surface structure comprising the repetition of recessed line parts and projected line parts along the vertical direction, the respective dust collecting electrode elements are fixed by disposing a beam to the upper edge part and lower edge part of the dust collecting electrode elements, and a channel material connecting the upper edge part beam and the lower edge part beam is disposed along the recessed line part. For the channel material, the opening is made to face the dust collecting electrode element and the cross sectional height is set to the depth of the recessed line part or less. The channel material can be disposed to the recessed line part at both side end parts of the dust collecting electrode. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、乾式電機集塵用集塵極板に関し、詳しくは、使用につれて集塵極板に付着するダストを槌打装置により槌打して剥離除去する乾式集塵機の集塵極板に係る。   The present invention relates to a dust collecting electrode plate for dry electric machine dust collection, and more particularly, to a dust collecting electrode plate of a dry dust collector in which dust attached to the dust collecting electrode plate is beaten and removed by a striking device as it is used.

ボイラ排ガスなどの排気ガスからダストを除去するために電気集塵機が用いられている。これは平板状に形成された放電電極と集塵電極と交互に対面配置し、その間に排ガスを通すことにより、放電によりガス中のダストを荷電し、集塵電極に付着させてダストを取り除くものである。集塵作業を継続することにより集塵電極の極板表面にダストが付着積層するため、乾式電気集塵機の場合には集塵極板を定期的に槌打し、付着ダストを取り除くようにしている。この種の電気集塵機として特許文献１が挙げられる。
特開２００７−１５２２０６号公報 An electric dust collector is used to remove dust from exhaust gas such as boiler exhaust gas. This is a flat discharge electrode and dust collection electrode that are alternately placed facing each other, and exhaust gas is passed between them to charge the dust in the gas by discharge and adhere to the dust collection electrode to remove the dust. It is. Dust adheres and accumulates on the electrode plate surface of the collection electrode by continuing the dust collection work. In the case of a dry electric dust collector, the dust collection plate is periodically beaten to remove the adhering dust. . Patent document 1 is mentioned as this kind of electric dust collector.
JP 2007-152206 A

槌打装置は縦方向に複数列吊下される短冊状のエレメント部材を横方向から槌打することにより、ダストを剥離除去する。このため、槌打装置による槌打を繰り返すうちに、エレメント部材、特に、槌打部位近傍に位置する集塵極板の縦方向側縁部のエレメント部材に亀裂が生じる。このため、亀裂の修理に手間がかかる。また、亀裂によりエレメント部材が脱落するおそれがあるが、脱落した場合には、集塵極板が放電極板に接触するおそれがあり危険である。
本発明は、槌打装置により生じるエレメント部材の亀裂の発生を防止するとともに、脱落を防止する乾式集塵機用集塵極板を提供することを課題とする。 The hammering device peels and removes dust by striking strip-shaped element members suspended in a plurality of rows in the vertical direction from the horizontal direction. For this reason, cracking occurs in the element member, in particular, the element member on the side edge in the vertical direction of the dust collecting electrode plate located in the vicinity of the striking site while striking with the striking device is repeated. For this reason, it takes time to repair cracks. Further, the element member may fall off due to the crack, but in the case of dropping, there is a risk that the dust collecting electrode plate may come into contact with the discharge electrode plate.
It is an object of the present invention to provide a dust collector electrode plate for a dry dust collector that prevents the occurrence of cracks in an element member caused by a hammering device and prevents the element member from falling off.

上記課題を解決するために、本発明に係る乾式集塵機用集塵極板は、縦方向に沿った凹条部と凸条部の繰り返しからなる凹凸面構造とした集塵電極エレメントを平面配列して構成し、前記集塵電極板の上縁部と下縁部にビームを張り渡して各集塵電極エレメントを固定し、かつ、前記上縁ビームと下縁ビームとを連結するチャンネル材を前記凹条部に沿って配置したことを特徴とする。   In order to solve the above-mentioned problems, a dust collecting electrode plate for a dry dust collector according to the present invention has a planar arrangement of dust collecting electrode elements having a concave and convex surface structure composed of repeating concave and convex portions along the vertical direction. A channel material for connecting the upper edge beam and the lower edge beam to each other and fixing each dust collection electrode element by extending the beam to the upper edge portion and the lower edge portion of the dust collection electrode plate. It arrange | positions along a concave-line part, It is characterized by the above-mentioned.

また、前記チャンネル材は開口を集塵電極エレメントに対面させて配置すればよい。更に、前記集塵電極板が集塵電極エレメントを多段に連結して形成される構成に適用することができる。前記チャンネル材は断面高さを凹条部深さ以下に設定することができる。前記チャンネル材は集塵電極板の両側端部の凹条部に配置する構成とすればよい。   The channel material may be disposed with the opening facing the dust collecting electrode element. Furthermore, the present invention can be applied to a configuration in which the dust collecting electrode plate is formed by connecting dust collecting electrode elements in multiple stages. The channel material may have a cross-sectional height set to be equal to or less than the depth of the concave stripe portion. What is necessary is just to set it as the structure which arrange | positions the said channel material to the concave part of the both-ends part of a dust collection electrode plate.

本発明によれば、槌打装置で集塵極板を槌打することにより集塵極板に付着されたダストは除去され、この際の応力は集塵極板のエレメントに加わるが、エレメントの凹部に縦方向に配置したチャンネル材からなる支持部材で受け止められるので、エレメント部材の亀裂の発生が防止されるとともに、この槌打による繰返し応力によってビームに連結されているエレメントに亀裂が生じても下位部材の脱落が防止される。   According to the present invention, the dust attached to the dust collecting electrode plate is removed by striking the dust collecting electrode plate with a hammering device, and the stress at this time is applied to the element of the dust collecting electrode plate. Since it is received by a support member made of a channel material arranged vertically in the concave portion, the occurrence of cracks in the element member is prevented, and even if cracks occur in the elements connected to the beam due to repeated stress due to this striking The lower member is prevented from falling off.

前記チャンネル材は開口を集塵電極エレメントに対面させて配置することにより、熱反りによって放電極への接触を防止することができる。
また、集塵電極板が集塵電極エレメントを多段に連結して形成されている場合でも重量物負荷が破損を促進することを抑制できる。 The channel material can prevent contact with the discharge electrode due to thermal warping by arranging the opening facing the dust collecting electrode element.
Moreover, even when the dust collecting electrode plate is formed by connecting dust collecting electrode elements in multiple stages, it is possible to suppress the heavy load from promoting breakage.

更に、チャンネル材の断面高さを凹条部深さ以下に設定することにより、吊ビームへの接合溶着が容易にでき、集塵電極エレメントの結合に影響させることなく補強できる。
また、チャンネル材を集塵電極板の両側端部の凹条部に配置することにより、小さい隙間で行われる改修工事が容易になる利点が得られる。 Furthermore, by setting the cross-sectional height of the channel material to be equal to or less than the depth of the concave stripe portion, joining and welding to the suspended beam can be facilitated, and reinforcement can be performed without affecting the coupling of the dust collecting electrode elements.
In addition, by arranging the channel material in the concave strips at both end portions of the dust collecting electrode plate, an advantage of facilitating the repair work performed with a small gap can be obtained.

以下に、本発明に係る電気集塵機用集塵極板の実施の形態を、図面を参照しながら、詳細に説明する。
図１は集塵極板の全体正面図、図２は側面図、図３は要部斜視図、図４は要部拡大斜視図、図５は図３のＶ−Ｖ線断面図、図６は同ＶＩ−ＶＩ線断面図である。 Hereinafter, embodiments of a dust collecting electrode plate for an electric dust collector according to the present invention will be described in detail with reference to the drawings.
1 is an overall front view of the dust collecting electrode plate, FIG. 2 is a side view, FIG. 3 is a perspective view of the main part, FIG. 4 is an enlarged perspective view of the main part, FIG. 5 is a cross-sectional view taken along line VV in FIG. Is a sectional view taken along the line VI-VI.

実施形態に係る乾式電気集塵機の集塵極板１０は、図１〜２に示しているように、平板構造とされており、上部集塵電極板１２Ｕと、下部集塵電極板１２Ｄとを一体に平面配置した構造物であり、電気集塵機内にやはり平板状に形成される放電極と交互に配置され、上部から吊下配置されて高温排ガスの通風路に置かれる。各集塵極板１２（１２Ｕ，１２Ｄ）は、縦方向に沿った凹条部と凸条部の繰り返しからなる凹凸面構造とした集塵電極エレメント１４，１４、………(図１二点鎖線で区分された領域)を平面配列されており、それぞれ上縁部と下縁部をビーム１６（上縁部ビーム１６Ｕ、下縁部ビーム１６Ｄ）により連結して１枚板に構成されている。各ビーム１６は、図２，３，４に示すように、２枚の金属板を張り合わせつつ、断面が二股構造となるように折り曲げ成形されたもので、二股部分に集塵電極エレメント１４、１４、………を挟み込んでボルト締めし、エレメントと一体連結される。そして、建屋天井部に吊具１７（図２）により吊り下げ支持される。上下の集塵電極板１２Ｕ，１２Ｄとは、図２から明らかなように、上部集塵電極板１２Ｕにおける下縁部ビーム１６Ｄと、下部集塵電極板１２Ｄにおける上縁部ビーム１６Ｕとを連結治具１９によって電気的にも接続して連結されるものとなっている。   The dust collecting electrode plate 10 of the dry electrostatic precipitator according to the embodiment has a flat plate structure as shown in FIGS. 1 and 2, and the upper dust collecting electrode plate 12U and the lower dust collecting electrode plate 12D are integrated. In the electric dust collector, it is alternately arranged with discharge electrodes that are also formed in a flat plate shape, suspended from the upper part, and placed in a ventilation path for high-temperature exhaust gas. Each of the dust collecting electrode plates 12 (12U, 12D) has a dust collecting electrode element 14, 14 having a concave-convex surface structure formed by repeating a concave portion and a convex portion along the vertical direction. The regions separated by the chain line are arranged in a plane, and the upper edge and the lower edge are connected to each other by a beam 16 (upper edge beam 16U, lower edge beam 16D) to form a single plate. . As shown in FIGS. 2, 3 and 4, each beam 16 is formed by bending two metal plates so that the cross section has a bifurcated structure, and dust collecting electrode elements 14, 14 are formed at the bifurcated portion. , ... are clamped and bolted to be connected to the element. And it is suspended and supported by the hanging tool 17 (FIG. 2) on the building ceiling. As is apparent from FIG. 2, the upper and lower dust collecting electrode plates 12U and 12D are connected to the lower edge beam 16D in the upper dust collecting electrode plate 12U and the upper edge beam 16U in the lower dust collecting electrode plate 12D. The tool 19 is electrically connected and connected.

なお、上下集塵電極板１２の下縁部ビーム１６Ｄの一端部は、槌打装置によって槌打される槌打部１８が形成され、下ビーム１２Ｄの一端部を槌打することにより付着ダストを除去することができるようにしている。   In addition, a striking portion 18 that is beaten by a striking device is formed at one end of the lower edge beam 16D of the upper and lower dust collecting electrode plates 12, and dust is attached by striking one end of the lower beam 12D. So that it can be removed.

ところで、前記上下集塵電極板１２の両側縁部には、図１、図４に示すように、前記上縁部ビーム１６Ｕと下縁部ビーム１６Ｄとを連結するチャンネル材２０を前記凹条部に沿って配置している。特に、集塵電極板１２の一番外側の凹条部に前記チャンネル材２０を取り付けるようにしている。これは、特に槌打装置により槌打される箇所に一番近接する凹状部を対象としており、既設の集塵電極への適用が簡単に行えるようにしている。   By the way, on both side edges of the upper and lower dust collecting electrode plates 12, as shown in FIG. 1 and FIG. 4, the channel material 20 for connecting the upper edge beam 16U and the lower edge beam 16D is provided with the concave portion. It is arranged along. In particular, the channel member 20 is attached to the outermost concave portion of the dust collecting electrode plate 12. This is particularly intended for the concave portion closest to the portion to be hit by the hitting device, so that it can be easily applied to the existing dust collecting electrode.

チャンネル材２０は、その断面をＣ型断面とし、図４〜６から理解できるように、その開口側が集塵電極エレメント１４の盤面を向くように対面させて集塵電極板１２の外端に位置する凹条部に配置させている。これにより、高温排ガスに晒されて加熱された場合、チャンネル材２０の熱による反りは開口側が外側になるように弓なりに湾曲するが、その反りをエレメント１４が抵抗して曲げを抑制するように機能させている。また、長さはエレメント１４に合わせ、かつ、断面高さはエレメント１４の凹条部の深さ以下となるように設定されている。これは数ｍｍの相違が付けばよく、チャンネル材２０を後付する際に、上下ビーム１６と凹条部の間に容易に装着できるようにし、かつ上下ビーム１６への溶着ができるようにするためである。実施形態の場合、凹条部の深さ２４ｍｍに対し、チャンネル材２０の高さを２２ｍｍに設定している。更に、チャンネル材２０は、集塵電極エレメント１４と同材質のＳＳ鋼によって形成されており、両者の熱膨張差が出ないようにしている。集塵電極エレメント１４の凹条部に装着されたチャンネル材２０は上下ビーム１６と、図４に示されるように、接合縁線に沿って溶接され、ビーム１６と一体結合されるようになっている（溶接ビード２２）。これにより、チャンネル材２０は、上下集塵電極板１２の各々において、上下ビーム１６Ｕ，１６Ｄ同士を連結した荷重支持部材として機能し、上下ビーム１６Ｕ、１６Ｄと左右チャンネル材２０とにより矩形フレーム構造を構築するため、支持されている集塵電極エレメント１４が亀裂破損するようなことがあっても、分離落下することを防止することができるものとなる。   The channel member 20 has a C-shaped cross section, and as can be understood from FIGS. 4 to 6, the channel member 20 is positioned at the outer end of the dust collecting electrode plate 12 so that the opening side faces the surface of the dust collecting electrode element 14. It is made to arrange in the concave part to do. Thereby, when heated by being exposed to high temperature exhaust gas, the warp of the channel material 20 is curved in a bow shape so that the opening side is on the outside, but the element 14 resists the warp and suppresses bending. It is functioning. The length is set to match the element 14, and the cross-sectional height is set to be equal to or less than the depth of the concave strip portion of the element 14. This can be done by a difference of several millimeters, so that when the channel member 20 is retrofitted, it can be easily mounted between the upper and lower beams 16 and the recesses and can be welded to the upper and lower beams 16. Because. In the case of the embodiment, the height of the channel material 20 is set to 22 mm with respect to the depth of the recessed strip portion of 24 mm. Further, the channel material 20 is made of SS steel made of the same material as the dust collecting electrode element 14 so that a difference in thermal expansion between them does not occur. The channel member 20 mounted on the concave portion of the dust collecting electrode element 14 is welded to the upper and lower beams 16 along the joining edge line as shown in FIG. (Weld bead 22). Accordingly, the channel member 20 functions as a load support member that connects the upper and lower beams 16U and 16D in each of the upper and lower dust collecting electrode plates 12, and the upper and lower beams 16U and 16D and the left and right channel members 20 form a rectangular frame structure. Therefore, even if the supported dust collection electrode element 14 is cracked and broken, it can be prevented from falling off.

上記構成において、槌打装置で槌打すると、集塵極板１２Ｕ、１２Ｄに集塵されたダストは剥離除去されることになる。この際、槌打による応力は集塵極板１２Ｕ、１２Ｄのエレメント部材１４、１４、………に加わるが、この応力は支持部材となっているチャンネル材２０で受け止められるので、エレメント１４の亀裂の発生が防止されるとともに、仮に亀裂損壊しても脱落分離が防止される。そして、特に高温排ガス中に置かれて熱膨張したとしても、チャンネル材２０の反りは、上下両端部分が上下ビーム１６に溶着されているため、図７に示しているように、開口側が外になって湾曲（図７の場合には左方に膨れ上がるように湾曲）するような形態となる。しかし、図６に示すように、湾曲の張り出しが集塵電極エレメント１４によって抑えられ、放電極板側への接触が防止されるため、電気的な短絡事故を防止できる安全性の高いものとなっている。   In the above configuration, when the hammer is beaten by the hammering device, the dust collected on the dust collecting plates 12U and 12D is peeled and removed. At this time, the stress due to the striking is applied to the element members 14, 14,... Of the dust collecting electrode plates 12 U, 12 D, but this stress is received by the channel member 20 serving as a support member. Is prevented, and even if a crack breaks, falling off is prevented. And even if it is placed in a high temperature exhaust gas and thermally expands, the warp of the channel material 20 is welded to the upper and lower beams 16 at the upper and lower ends, so that the opening side is outside as shown in FIG. It becomes a form which curves (curves so as to swell leftward in the case of FIG. 7). However, as shown in FIG. 6, the protrusion of the curve is suppressed by the dust collecting electrode element 14 and contact with the discharge electrode plate side is prevented, so that an electrical short circuit accident can be prevented and the safety is high. ing.

特に、槌打による応力は槌打部位近傍、すなわち、集塵極板１２の側縁部に位置するエレメント部材１４に加わるが、チャンネル材２０はエレメント部材１４の両側縁部に位置して配置されていることから、亀裂の生じやすい部位が保護される。同時に、チャンネル材２０を既存の電気集塵機に装備させることもでき、既存集塵機の延命措置を講ずることができる、コストを低減することができる。   In particular, the stress due to the striking is applied to the element member 14 located in the vicinity of the striking portion, that is, the side edge of the dust collecting electrode plate 12, but the channel material 20 is disposed to be located on both side edges of the element member 14. Therefore, the part which is easy to generate a crack is protected. At the same time, the channel material 20 can be installed in an existing electric dust collector, and the life extension measures for the existing dust collector can be taken, and the cost can be reduced.

また、チャンネル材２０は溝形の凹状に形成されており、エレメント１４間の凹条部内に凹溝部同士を対向させて配置されていることから、エレメント１４の強度を強化することができる。   Further, since the channel material 20 is formed in a groove-like concave shape and is disposed with the groove portions facing each other in the groove portion between the elements 14, the strength of the element 14 can be enhanced.

さらに、チャンネル材２０とエレメント１４とは同材質により形成されていることから、両者の間の接触腐食を防止することができるので、集塵極板１２の集塵能力の低下を防止することができる。   Furthermore, since the channel material 20 and the element 14 are formed of the same material, contact corrosion between them can be prevented, so that a reduction in the dust collection ability of the dust collection electrode plate 12 can be prevented. it can.

実施形態に係る集塵極板の全体正面図である。It is a whole front view of the dust collection electrode plate concerning an embodiment. 同集塵極板の全体側面図である。It is a whole side view of the dust collection electrode plate. 同集塵極板の要部斜視図である。It is a principal part perspective view of the dust collection electrode plate. 同集塵極板の要部拡大斜視図である。It is a principal part expansion perspective view of the dust collection electrode plate. 図３のＶ−Ｖ線断面図である。It is the VV sectional view taken on the line of FIG. 同ＶＩ−ＶＩ線断面図である。It is the VI-VI sectional view taken on the line. チャンネル材の反りの説明図である。It is explanatory drawing of the curvature of a channel material.

符号の説明Explanation of symbols

１０………集塵極板、１２Ｕ………上部集塵電極板、１２Ｄ………下部集塵電極板、１４………集塵電極エレメント、１６Ｕ………上縁部ビーム、１６Ｄ………下縁部ビーム、１７………吊具、１８………槌打部、１９………連結治具、２０………チャンネル材、２２………溶接ビード。 10 ......... Dust collecting electrode plate, 12U ......... Upper dust collecting electrode plate, 12D ......... Lower dust collecting electrode plate, 14 ......... Dust collecting electrode element, 16U ......... Upper edge beam, 16D ... ... bottom edge beam, 17 ......... hanging tool, 18 ......... striking part, 19 ......... connecting jig, 20 ......... channel material, 22 ......... weld bead.

Claims (5)

縦方向に沿った凹条部と凸条部の繰り返しからなる凹凸面構造とした集塵電極エレメントを平面配列して構成し、前記集塵電極エレメントの上縁部と下縁部にビームを張り渡して各集塵電極エレメントを固定し、かつ、前記上縁部ビームと下縁部ビームとを連結するチャンネル材を前記凹条部に沿って配置したことを特徴とする電気集塵機用集塵極板。   A dust collector electrode element having a concave-convex surface structure composed of repeated concave and convex portions along the vertical direction is arranged in a plane, and beams are stretched on the upper and lower edges of the dust collector electrode element. A dust collecting electrode for an electrostatic precipitator, wherein the dust collecting electrode element is fixed and a channel material for connecting the upper edge beam and the lower edge beam is disposed along the concave strip. Board. 前記チャンネル材は開口を集塵電極エレメントに対面させてなることを特徴とする請求項１に記載の電気集塵機用集塵極板。   The dust collecting electrode plate for an electrostatic precipitator according to claim 1, wherein the channel material has an opening facing the dust collecting electrode element. 前記集塵電極板は集塵電極エレメントを多段に連結して形成されてなることを特徴とする請求項１乃至２のいずれか１に記載の電気集塵機用集塵極板。   The dust collecting electrode plate for an electric dust collector according to any one of claims 1 to 2, wherein the dust collecting electrode plate is formed by connecting dust collecting electrode elements in multiple stages. 前記チャンネル材は断面高さを凹条部深さ以下に設定してなることを特徴とする請求項１乃至３のいずれか１に記載の電気集塵機用集塵極板。   The dust collecting electrode plate for an electrostatic precipitator according to any one of claims 1 to 3, wherein the channel material has a cross-sectional height set to be equal to or less than a depth of the concave portion. 前記チャンネル材は集塵電極板の両側端部の凹条部に配置されていることを特徴とする請求項１乃至４のいずれか１に記載の電気集塵機用集塵極板。   The dust collecting electrode plate for an electrostatic precipitator according to any one of claims 1 to 4, wherein the channel material is disposed in a concave strip portion on both end portions of the dust collecting electrode plate.
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Publication number Priority date Publication date Assignee Title
KR20180127074A (en) * 2017-05-19 2018-11-28 한라산업개발 주식회사 Electrostatic precipitator
KR102018344B1 (en) * 2019-02-27 2019-09-04 함수환 Support device for preventing bending of the dust collecting plate for electrostatic precipitator
KR102041351B1 (en) * 2019-02-27 2019-11-06 함수환 Anti-flexure device for dust collecting plate of electrostatic precipitator
CN110801939A (en) * 2019-11-12 2020-02-18 珠海格力电器股份有限公司 Purifier polar plate subassembly and purifier
CN111974547A (en) * 2019-05-22 2020-11-24 斗山重工业建设有限公司 Horizontal dust collecting device and dust collecting method using same
US11911777B2 (en) 2020-03-18 2024-02-27 Samsung Electronics Co., Ltd. Electrostatic dust collecting apparatus and method of manufacturing the same

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JPS6287263A (en) * 1985-09-09 1987-04-21 ドレツサ−　ユ−．ケ−．　リミテツド Electric precipitator
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180127074A (en) * 2017-05-19 2018-11-28 한라산업개발 주식회사 Electrostatic precipitator
KR101976488B1 (en) * 2017-05-19 2019-08-28 한라산업개발 주식회사 Electrostatic precipitator
KR102018344B1 (en) * 2019-02-27 2019-09-04 함수환 Support device for preventing bending of the dust collecting plate for electrostatic precipitator
KR102041351B1 (en) * 2019-02-27 2019-11-06 함수환 Anti-flexure device for dust collecting plate of electrostatic precipitator
CN111974547A (en) * 2019-05-22 2020-11-24 斗山重工业建设有限公司 Horizontal dust collecting device and dust collecting method using same
CN111974547B (en) * 2019-05-22 2022-12-27 斗山重工业建设有限公司 Horizontal dust collecting device and dust collecting method using same
CN110801939A (en) * 2019-11-12 2020-02-18 珠海格力电器股份有限公司 Purifier polar plate subassembly and purifier
US11911777B2 (en) 2020-03-18 2024-02-27 Samsung Electronics Co., Ltd. Electrostatic dust collecting apparatus and method of manufacturing the same

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