JPH11319740A - Dust removal device - Google Patents
Dust removal deviceInfo
- Publication number
- JPH11319740A JPH11319740A JP13040898A JP13040898A JPH11319740A JP H11319740 A JPH11319740 A JP H11319740A JP 13040898 A JP13040898 A JP 13040898A JP 13040898 A JP13040898 A JP 13040898A JP H11319740 A JPH11319740 A JP H11319740A
- Authority
- JP
- Japan
- Prior art keywords
- air
- dust
- assembly
- suction means
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
Landscapes
- Cleaning In General (AREA)
- Electrostatic Separation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、組立体としての例え
ば精密機器に付着した塵埃を除去するための塵埃除去装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing device for removing dust attached to, for example, precision equipment as an assembly.
【０００２】[0002]
【従来の技術】従来から、組立体としての例えば精密機
器の製造・組立工程では、完成品の信頼度、性能を高め
るために、製造・組立工程において組立体に付着した２
０μｍ以上の粒径の塵埃を除去している。例えば、複写
機等の精密光学機器では、図３に概略的に示す読み取り
部２０のレンズユニット２１に高解像度のＣＣＤが用い
られている。この読み取り部２０の可動ミラー２２に塵
埃が付着していると、原稿を読み取った際に、可動ミラ
ー２２に付着した２０μｍ以上の粒径の塵埃がレンズユ
ニット２１の１次元ラインＣＣＤに結像され、複写物に
筋状の縞が発生し、原稿読み取り品質が低下するという
問題がある。そのため、読み取り部２０の組立工程で
は、図示を略すコンタクトガラスを装着する前に、可動
ミラー２２、レンズユニット２１に付着した塵埃を除去
するために、一定圧力のエアーを連続的に可動ミラー２
２の表面、レンズユニット２１の対物レンズの表面に噴
射して、可動ミラー２２、レンズユニット２１に付着し
た塵埃を吹き飛ばすと共に、空中に舞い上げられた塵埃
を吸引して、組立体から極力塵埃を取り除くようにして
いる。2. Description of the Related Art Conventionally, in the manufacturing and assembling process of, for example, precision equipment as an assembly, in order to enhance the reliability and performance of a finished product, a product attached to the assembly in the manufacturing and assembling process has been used.
Dust having a particle size of 0 μm or more is removed. For example, in a precision optical device such as a copying machine, a high-resolution CCD is used for the lens unit 21 of the reading unit 20 schematically shown in FIG. If dust adheres to the movable mirror 22 of the reading unit 20, when the original is read, dust having a particle diameter of 20 μm or more attached to the movable mirror 22 forms an image on the one-dimensional line CCD of the lens unit 21. Further, there is a problem that streak-like stripes are generated in the copy, and the reading quality of the original is deteriorated. Therefore, in the assembly process of the reading unit 20, air of a constant pressure is continuously applied to the movable mirror 2 in order to remove dust adhering to the movable mirror 22 and the lens unit 21 before attaching a contact glass (not shown).
2 and the surface of the objective lens of the lens unit 21 to blow off the dust adhered to the movable mirror 22 and the lens unit 21 and to suck the dust soared up in the air to remove dust from the assembly as much as possible. I try to remove it.
【０００３】[0003]
【発明が解決しようとする課題】ところで、近時、読み
取り精度のより一層の向上を図るために、２０μｍ未満
の粒径のものも、極力除去するようにとの要求が高まり
つつある。ところが、粒径が２０μｍ未満の塵埃は、従
来のエアー連続噴射による塵埃除去では、吸引手段によ
る空気の流れに乗りにくく、空中に舞い上げられた塵埃
がエアー噴射によって生じる空気の渦（乱流）に乗って
組立体上方の空中を浮遊する状態となるため、吸引手段
によりなかなか吸引されず、再び組立体に向かって落下
して付着する不都合がある。By the way, recently, in order to further improve the reading accuracy, there is an increasing demand for removing particles having a particle diameter of less than 20 μm as much as possible. However, dust having a particle size of less than 20 μm is difficult to ride on the flow of air by the suction means in the conventional dust removal by continuous air injection, and the dust soared into the air causes vortex (turbulence) of air generated by the air injection. Therefore, there is a disadvantage that the air is not easily sucked by the suction means and drops again toward the assembly and adheres thereto.
【０００４】この発明は上記の事情に鑑みてなされたも
ので、組立体に付着している粒径の小さな塵埃を効率よ
く除去することのできる塵埃除去装置を提供することを
目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide a dust removing apparatus capable of efficiently removing dust having a small particle diameter attached to an assembly.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
請求項１の塵埃除去装置は、組立体に付着した塵埃を吹
き飛ばすために前記組立体に対してエアーノズルから所
定圧力のエアーを間欠的に噴射するエアー噴射手段と、
エアー噴射により前記組立体から空中に舞い上げられた
塵埃を吸引する吸引手段とを備えている。In order to achieve this object, a dust removing apparatus according to a first aspect of the present invention intermittently blows air of a predetermined pressure from an air nozzle to the assembly to blow off dust attached to the assembly. Air injection means for injecting into the
Suction means for sucking dust soared from the assembly into the air by air injection.
【０００６】請求項２の塵埃除去装置は、請求項１の塵
埃除去装置において、前記吸引手段に前記エアー噴射の
休止時に浮遊する塵埃を吸引するために、前記組立体の
下方に前記吸引手段の吸引口が設けられていることを特
徴とする。According to a second aspect of the present invention, there is provided the dust removing apparatus according to the first aspect, wherein the suction means is provided below the assembly so as to suck the dust floating when the air injection is stopped. A suction port is provided.
【０００７】請求項３の塵埃除去装置は、請求項１又は
請求項２に記載の塵埃除去装置において、前記組立体に
付着した塵埃を除去するために周囲に対して前記組立体
を隔絶する塵埃除去室と、前記組立体を前記塵埃除去室
に搬入するときに開閉される搬入用扉と、前記組立体を
前記塵埃除去室から搬出するときに開閉される搬出用扉
と、前記組立体を前記塵埃除去室に搬入・搬出するため
の搬入・搬出手段とを備えている。According to a third aspect of the present invention, there is provided a dust removing apparatus according to the first or second aspect, wherein the dust is separated from the surroundings to remove dust attached to the assembly. A removal chamber, a loading door that is opened and closed when the assembly is loaded into the dust removal chamber, a loading door that is opened and closed when the assembly is loaded from the dust removal chamber, and the assembly. And a carry-in / carry-out means for carrying in / out the dust removal chamber.
【０００８】請求項４の塵埃除去装置は、請求項３に記
載の塵埃除去装置において、浄化された外部空気を導入
して前記塵埃除去室を陽圧に維持する外気吸入手段を有
することを特徴とする。According to a fourth aspect of the present invention, there is provided a dust removing apparatus according to the third aspect, further comprising an outside air suction means for introducing purified external air to maintain the dust removing chamber at a positive pressure. And
【０００９】請求項５の塵埃除去装置は、請求項１又は
請求項２に記載の塵埃除去装置において、前記エアー噴
射手段がイオン化されたエアーを前記組立体に噴射する
ことにより前記組立体に付着した塵埃を電気的に中和さ
せ、前記組立体に付着した塵埃の付着力を弱めることを
特徴とする。According to a fifth aspect of the present invention, in the dust removing apparatus according to the first or second aspect, the air ejecting means ejects ionized air to the assembly to adhere to the assembly. The dust is electrically neutralized to reduce the adhesion of the dust attached to the assembly.
【００１０】請求項６の塵埃除去装置は、請求項１又は
請求項２に記載の塵埃除去装置において、前記吸引手段
が前記エアー噴射の休止時にのみ前記塵埃を吸引するこ
とを特徴とする。According to a sixth aspect of the present invention, in the dust removing apparatus according to the first or second aspect, the suction means sucks the dust only when the air injection is stopped.
【００１１】請求項１〜請求項６に記載の発明によれ
ば、エアーを間欠的に組立体に向けて噴射することにし
たので、エアー噴射によって生じる空気の乱れのない状
態をエアー噴射休止時に繰り返し発生させることができ
ることになり、従って、吸引手段による空気の流れに乗
せて塵埃を吸引できることになる。According to the first to sixth aspects of the present invention, the air is intermittently jetted toward the assembly, so that the state in which the air is not disturbed due to the air jet is set when the air jet is stopped. The dust can be repeatedly generated, and therefore, the dust can be sucked on the flow of the air by the suction means.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】図１及び図２において、１は塵埃除去装置
本体、２は組立体、３Ａ，３Ｂは組立体の搬入・搬出手
段としての搬送用コンベア、３Ｃはパレットである。こ
こでは、所定の工程を経て組立られた組立体２はパレッ
ト３Ｃに乗せられ、搬送用コンベア３Ａによって塵埃除
去装置本体１に向かって運ばれる。塵埃除去装置本体１
には、図２に示すように塵埃除去室４、所定圧力のエア
ーを噴射するエアー噴射手段５、塵埃除去室４内に舞い
上げられた塵埃を吸引するための吸引手段６が設けられ
ている。In FIGS. 1 and 2, reference numeral 1 denotes a dust removing device main body, 2 denotes an assembly, 3A and 3B denote conveyors for carrying in and out of the assembly, and 3C denotes a pallet. Here, the assembly 2 assembled through a predetermined process is put on a pallet 3C, and is conveyed toward the dust removing device main body 1 by a conveyor 3A. Dust removal device body 1
As shown in FIG. 2, there are provided a dust removing chamber 4, an air ejecting means 5 for injecting air at a predetermined pressure, and a suction means 6 for sucking dust blown up in the dust removing chamber 4. .
【００１４】この塵埃除去室４には、搬入用扉７、搬出
用扉８、搬入物検出器９、外気吸入手段１０、吸引手段
６に通じる吸引ダクト１１が設けられている。この搬入
用扉７及び搬出用扉８はドア開閉用シリンダ１４，１
４’により開閉される。The dust removing chamber 4 is provided with a carry-in door 7, a carry-out door 8, a carry-in detector 9, an outside air suction means 10, and a suction duct 11 communicating with the suction means 6. The carry-in door 7 and the carry-out door 8 are door opening / closing cylinders 14 and 1.
Opened and closed by 4 '.
【００１５】外気吸入手段１０は、塵埃除去室４の側方
に設置されている。この外気吸入手段１０は静電フィル
ター１２を備え、外気は図示を略す外気吸入口から外気
吸入用ファンにより塵埃除去室４に送り込まれ、その際
に静電フィルタ１２により塵埃が除去される。この外気
の導入により、塵埃除去室４は外気圧よりも若干高い圧
力、すなわち陽圧に保たれ、塵埃除去室４を気密構造と
しなくとも外部の塵埃が塵埃除去室４に侵入しない状態
に保つことができる。The outside air suction means 10 is installed on the side of the dust removal chamber 4. The outside air suction means 10 includes an electrostatic filter 12, and the outside air is sent into the dust removal chamber 4 from an outside air suction port (not shown) by an outside air suction fan, and the dust is removed by the electrostatic filter 12 at that time. Due to the introduction of the outside air, the dust removal chamber 4 is maintained at a pressure slightly higher than the outside air pressure, that is, a positive pressure, and the dust removal chamber 4 is kept in a state in which the outside dust does not enter the dust removal chamber 4 without having an airtight structure. be able to.
【００１６】吸引ダクト１１は塵埃除去室４内の下方に
設けられている。この吸引ダクト１１は、下方に向かっ
て吸引口の開口面積が縮径されたラッパ形状とされて、
吸引手段６に連通されている。吸引手段６は吸引用モー
ター６Ａと吸引用静電フィルター６Ｂとを有する。吸引
ダクト１１の近傍には吸引時の空気の乱れを防ぐため、
整流板１３が設けられている。The suction duct 11 is provided below the dust removing chamber 4. The suction duct 11 has a trumpet shape in which the opening area of the suction port is reduced in diameter downward.
It is communicated with the suction means 6. The suction means 6 has a suction motor 6A and a suction electrostatic filter 6B. In order to prevent air turbulence during suction near the suction duct 11,
A current plate 13 is provided.
【００１７】外気吸入手段１０による空気の流入と吸引
手段６による空気の排出とにより、塵埃除去室４内には
一定の空気の流れが作られている。この空気の流れに空
中を漂う塵埃を乗せることにより塵埃の除去が行われ
る。ここでは、風速（流速）１．２ｍ／ｓ〜１．８ｍ／
ｓの空気の流れとしている。A constant flow of air is created in the dust removal chamber 4 by the inflow of air by the outside air suction means 10 and the discharge of air by the suction means 6. Dust is removed by placing dust floating in the air on this air flow. Here, the wind speed (flow velocity) is 1.2 m / s to 1.8 m / s.
s air flow.
【００１８】塵埃除去室４内には、搬入物の有無，搬入
位置の確認用の搬入物検出器９が設けられている。搬入
用扉７は、組立体２が正常に搬入されて所定位置に静止
されたことが搬入物検出器９により検出されると閉じら
れる。In the dust removal chamber 4, there is provided a carried-in detector 9 for checking the presence / absence of a carried-in object and the carrying-in position. The carry-in door 7 is closed when the carry-in detector 9 detects that the assembly 2 is carried in normally and stopped at a predetermined position.
【００１９】エアー噴射手段５は、塵埃除去室４の上方
に固定されている。このエアー噴射手段５には、エアー
ノズル１５がここでは４本を一組として６列設けられて
おり、このエアーノズル１５から陽圧よりも高い圧力の
エアーが組立体２に対して噴射される。エアー噴射手段
５には図示を略すイオナイザーが設けられており、噴射
されるエアーを＋，−にイオン化させることにより塵埃
を電気的に中和して、組立体２の表面、例えば、可動ミ
ラー２２の表面、レンズユニット２１の対物レンズの表
面に付着した塵埃の付着力を弱めている。ここでは、イ
オン化された陽圧よりも高い圧力のエアーがエアーノズ
ル１５から組立体２に対して最大２４ｍ／ｓの流速で噴
射される。この噴射は間欠的であり、噴射休止時には外
気吸入手段１０と協力して塵埃除去装置４内を陽圧を維
持するために、流速２ｍ／ｓ程度のエアーがエアーノズ
ル１５から送り出される。The air injection means 5 is fixed above the dust removal chamber 4. The air injection means 5 is provided with six rows of four air nozzles 15 in this case, and air having a pressure higher than the positive pressure is injected from the air nozzles 15 to the assembly 2. . The air jetting means 5 is provided with an ionizer (not shown), which ionizes dust to be electrically neutralized by ionizing the jetted air into + and-so that the surface of the assembly 2, for example, the movable mirror 22. Of the lens unit 21 and the surface of the objective lens of the lens unit 21 are weakened. Here, air having a pressure higher than the ionized positive pressure is jetted from the air nozzle 15 to the assembly 2 at a maximum flow rate of 24 m / s. This injection is intermittent. When the injection is stopped, air having a flow velocity of about 2 m / s is sent from the air nozzle 15 in cooperation with the outside air suction means 10 to maintain the inside of the dust removing device 4 at a positive pressure.
【００２０】陽圧よりも高い圧力のエアーが組立体２に
噴射されると、このエアーにより組立体２の表面に付着
した塵埃が空中に舞い上げられる。このエアーはイオン
化されているため、組立体２の表面に付着している塵埃
は電気的に中性となり、組立体２の表面から離れ易くな
る。このエアー噴射により空中に舞い上げられた粒径が
２０μｍ以上の比較的大きな塵埃は、エアー噴射による
空気の渦の発生の際でも吸引手段６による空気の流れに
乗って沈降しやすく、塵埃除去室４の下部に設けられた
吸引ダクト１１を通って吸引手段６により除去される。
粒径が２０μｍ未満の塵埃は噴射によって生じる空気の
渦に乗って浮遊してなかなか降下しないものが多いが、
エアー噴射手段５によるエアー噴射を休止して空気の渦
が消滅すると、外気吸入手段１０と吸引手段６とにより
生じる一定の空気の流れに乗って吸引ダクト１１を通
り、吸引手段６によって回収される。続いて、次回のエ
アー噴射を行なう。When air having a pressure higher than the positive pressure is injected into the assembly 2, dust adhering to the surface of the assembly 2 is blown up into the air by the air. Since this air is ionized, dust adhering to the surface of the assembly 2 becomes electrically neutral and easily separates from the surface of the assembly 2. The relatively large dust particles having a particle size of 20 μm or more that are soared into the air by the air injection are apt to settle down on the air flow by the suction means 6 even when the air vortex is generated by the air injection. 4 is removed by the suction means 6 through a suction duct 11 provided at a lower portion of 4.
Dust with a particle size of less than 20 μm often floats on the vortex of air generated by jetting and does not readily fall,
When the air injection by the air injection means 5 is stopped and the vortex of the air disappears, the air flows through the suction duct 11 on the constant air flow generated by the outside air suction means 10 and the suction means 6 and is collected by the suction means 6. . Subsequently, the next air injection is performed.
【００２１】吸引ダクト１１を通って吸引された塵埃を
含んだエアーは、吸引用静電フィルター６Ｂにより塵埃
を除去されて清浄なエアーとして外部に排出される。The air containing the dust sucked through the suction duct 11 is removed by the suction electrostatic filter 6B, and is discharged to the outside as clean air.
【００２２】塵埃除去作業が終了すると排出用扉８が開
けられ、組立体２は次の製造組立工程に運ばれる。When the dust removing operation is completed, the discharge door 8 is opened, and the assembly 2 is carried to the next manufacturing and assembling step.
【００２３】図４はエアー噴射手段５によるエアー間欠
噴射（図４（ａ））に対する塵埃除去室４内の圧力変化
（図４（ｂ））及び浮遊する塵埃量の変化（図４
（ｃ））を経時的に例示したものである。ここでは、吸
引手段６は図４（ｄ）に示すように連続して吸引を行っ
ている。陽圧よりも高い圧力のエアー噴射が図４（ａ）
に示すように間欠的に行われると、図４（ｂ）に示すよ
うに、この噴射により塵埃除去室４内の圧力が５気圧か
ら２気圧の間で変化を繰り返し、エアー噴射初期から少
し遅れて塵埃除去４室の圧力が高まり、エアー噴射を休
止すると急速に圧力が弱まる。また、所定圧力のエアー
が組立体２に噴射されると、組立体２に付着していた塵
埃が空中に舞い上げられる。図４（ｃ）は一回目の所定
圧力のエアー噴射によりに空中に舞い上げられて浮遊す
る塵埃数を１００％として、陽圧より高い圧力のエアー
間欠噴射の繰り返しにより変化する浮遊塵埃量を示した
ものである。この図４（ｃ）において、実線は粒径が２
０μｍ未満（例えば、１０μｍ）の塵埃の比率を示し、
破線は粒径が２０μｍ以上の塵埃の比率を示している。FIG. 4 shows a change in pressure (FIG. 4B) in the dust removal chamber 4 and a change in the amount of floating dust (FIG. 4) in response to intermittent air injection by the air injection means 5 (FIG. 4A).
(C)) over time. Here, the suction means 6 continuously performs suction as shown in FIG. Fig. 4 (a) Air injection with a pressure higher than the positive pressure
4B, the pressure in the dust removal chamber 4 is repeatedly changed between 5 and 2 atm by this injection, as shown in FIG. As a result, the pressure in the dust removal chamber 4 increases, and when the air injection is stopped, the pressure rapidly decreases. When air at a predetermined pressure is injected into the assembly 2, dust attached to the assembly 2 is blown up in the air. FIG. 4 (c) shows the amount of floating dust that changes by repeating intermittent air injection at a pressure higher than the positive pressure, assuming that the number of dust soared into air and floating by the first air injection at a predetermined pressure is 100%. It is a thing. In FIG. 4C, the solid line indicates that the particle size is 2
Indicates a dust ratio of less than 0 μm (eg, 10 μm),
The dashed line indicates the ratio of dust having a particle size of 20 μm or more.
【００２４】図４（ｃ）に示すように、陽圧より高い圧
力のエアーが組立体２の表面に噴射されると、組立体２
の表面に付着している塵埃が空中に舞い上げられるた
め、塵埃浮遊率は少し上昇し、その後、エアー噴射を休
止すると、吸引手段６による塵埃の吸引により塵埃浮遊
率が減少に転ずる。エアー噴射直後は噴射による空気の
渦が発生するため、塵埃浮遊率が減少に転じるまでにし
ばらく時間がかかる。次回のエアー噴射時には組立体２
の表面に沈降した塵埃が再び空中に舞い上げられるた
め、塵埃浮遊率が上昇するが、１回目の噴射の際に吸引
手段６によりかなりの塵埃が吸引されているため、前回
の噴射による塵埃数の増加に比べるとその増加率は少な
くなる。このように、陽圧より高い圧力のエアー間欠噴
射を繰り返すことにより塵埃浮遊率の値が徐々に減少
し、組立体２の表面に付着した塵埃が除去される。As shown in FIG. 4C, when air having a pressure higher than the positive pressure is jetted to the surface of the assembly 2,
Since the dust adhering to the surface of the air blows up in the air, the dust floating rate slightly rises, and thereafter, when the air injection is stopped, the dust floating rate starts to decrease due to the suction of the dust by the suction means 6. Immediately after air injection, since air eddies are generated by the injection, it takes a while before the dust floating rate starts to decrease. Assembly 2 at the next air injection
The dust that has settled on the surface of the surface is soared into the air again, so that the dust floating rate rises. However, during the first ejection, a considerable amount of dust is sucked by the suction means 6, so that the dust The rate of increase is smaller than the increase. As described above, by repeating the intermittent air injection at a pressure higher than the positive pressure, the value of the dust floating rate gradually decreases, and dust attached to the surface of the assembly 2 is removed.
【００２５】粒径が２０μｍ以上の塵埃は粒径が２０μ
ｍ未満の塵埃に比べて少ない繰り返し回数のエアー間欠
噴射により塵埃浮遊率が減少する。粒径の大きな塵埃
は、粒径の小さな塵埃に比べて沈降し易く、吸引手段６
による空気の流れに乗りやすいため、吸引効率が高くな
るからである。Dust having a particle size of 20 μm or more has a particle size of 20 μm.
The intermittent air injection with a smaller number of repetitions compared to dust less than m reduces the dust floating rate. Dust having a large particle size is more likely to settle than dust having a small particle size.
This is because it is easy to ride on the flow of air due to the above, and the suction efficiency is increased.
【００２６】この図４から明らかなように、陽圧より高
い圧力のエアー噴射を間欠的に行うことにより、連続的
にエアーを噴射する従来の方法では除去が困難であった
粒径２０μｍ未満の塵埃を効率よく取り除くことができ
る。As is apparent from FIG. 4, by intermittently injecting air at a pressure higher than the positive pressure, it is difficult to remove air by a conventional method of continuously injecting air. Dust can be efficiently removed.
【００２７】以上、この発明の実施形態では、エアー噴
射中及び休止中にかかわらず塵埃除去室４内のエアーを
吸引手段６により連続的に吸引する構成としたが、エア
ー噴射の休止中にのみ吸引手段６による塵埃除去室４内
のエアーを吸引するようにしてもよい。As described above, in the embodiment of the present invention, the air in the dust removal chamber 4 is continuously sucked by the suction means 6 regardless of whether the air is being injected or the air is stopped. The air in the dust removal chamber 4 may be sucked by the suction means 6.
【００２８】[0028]
【発明の効果】本発明に係る塵埃除去装置は、以上説明
したように、エアー噴射手段によりエアーを組立体に間
欠的に噴射させることにしたので、組立体から空中に舞
い上げられた塵埃を、効率よく吸引手段による空気の流
れに乗せることができることになり、この間欠的エアー
噴射を繰り返すことにより、従来の連続的エアー噴射で
は除去が困難であった粒径２０μｍ未満の塵埃の除去が
容易になるという効果を奏する。As described above, in the dust removing apparatus according to the present invention, air is intermittently jetted to the assembly by the air jet means, so that the dust soared from the assembly into the air can be removed. It is possible to efficiently carry the air flow by the suction means, and by repeating this intermittent air injection, it is easy to remove dust having a particle size of less than 20 μm, which was difficult to remove by the conventional continuous air injection. This has the effect of becoming
【図１】本発明に係る塵埃除去装置の平面図である。FIG. 1 is a plan view of a dust removing device according to the present invention.
【図２】本発明に係る塵埃除去装置の側面図である。FIG. 2 is a side view of the dust removing device according to the present invention.
【図３】組立体の一例を示す図であって、組立工程にお
ける読み取り部の概略斜視図である。FIG. 3 is a diagram illustrating an example of an assembly, and is a schematic perspective view of a reading unit in an assembly process.
【図４】所定圧力のエアーの間欠噴射に対する塵埃除去
室内圧力及び塵埃除去室内塵埃浮遊率の関係を示す図で
ある。FIG. 4 is a diagram showing the relationship between the dust removal room pressure and the dust removal room dust floating ratio with respect to intermittent injection of air at a predetermined pressure.
１…塵埃除去装置本体 ２…組立体 ４…塵埃除去室 ５…エアー噴射手段 ６…吸引手段 １０…外気吸入手段 DESCRIPTION OF SYMBOLS 1 ... Dust removal apparatus main body 2 ... Assembly 4 ... Dust removal chamber 5 ... Air injection means 6 ... Suction means 10 ... External air suction means
Claims (6)
前記組立体に対してエアーノズルから所定圧力のエアー
を間欠的に噴射するエアー噴射手段と、エアー噴射によ
り前記組立体から空中に舞い上げられた塵埃を吸引する
吸引手段とを備えた塵埃除去装置。1. An air jet means for intermittently jetting air of a predetermined pressure from an air nozzle to said assembly to blow off dust attached to said assembly, and soaring from said assembly into the air by air jet. A dust removing device provided with a suction unit for sucking the collected dust.
に浮遊する塵埃を吸引するために、前記組立体の下方に
前記吸引手段の吸引口が設けられていることを特徴とす
る請求項１に記載の塵埃除去装置。2. The suction means according to claim 1, wherein said suction means is provided with a suction port of said suction means below said assembly for sucking dust floating when said air jet is stopped. A dust removing device according to item 1.
に周囲に対して前記組立体を隔絶する塵埃除去室と、前
記組立体を前記塵埃除去室に搬入するときに開閉される
搬入用扉と、前記組立体を前記塵埃除去室から搬出する
ときに開閉される搬出用扉と、前記組立体を前記塵埃除
去室に搬入・搬出するための搬入・搬出手段とを備えて
いる請求項１又は請求項２に記載の塵埃除去装置。3. A dust removal chamber for isolating the assembly from the surroundings to remove dust attached to the assembly, and a loading / unloading chamber which is opened and closed when the assembly is loaded into the dust removal chamber. A door, a carrying-out door that is opened and closed when carrying out the assembly from the dust removal chamber, and carrying-in / out means for carrying the assembly into and out of the dust removing chamber. The dust removal device according to claim 1 or 2.
去室を陽圧に維持する外気吸入手段を有することを特徴
とする請求項３に記載の塵埃除去装置。4. The dust removing apparatus according to claim 3, further comprising an outside air suction means for introducing purified external air to maintain the dust removing chamber at a positive pressure.
アーを前記組立体に噴射することにより前記組立体に付
着した塵埃を電気的に中和させ、前記組立体に付着した
塵埃の付着力を弱めることを特徴とする請求項１又は請
求項２に記載の塵埃除去装置。5. The air injection means electrically neutralizes dust adhered to the assembly by injecting ionized air to the assembly, and reduces the adhesion of the dust adhered to the assembly. The dust removing device according to claim 1, wherein the dust removing device is weakened.
のみ前記塵埃を吸引することを特徴とする請求項１又は
請求項２に記載の塵埃除去装置。6. The dust removing device according to claim 1, wherein the suction means sucks the dust only when the air injection is stopped.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13040898A JP3501343B2 (en) | 1998-05-13 | 1998-05-13 | Dust removal device |
| GB9910936A GB2337325B (en) | 1998-05-13 | 1999-05-11 | Device for removing dust deposited on an assembly |
| FR9906082A FR2778587A1 (en) | 1998-05-13 | 1999-05-12 | Device for removing dust, smaller than 20 mum, from precision apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13040898A JP3501343B2 (en) | 1998-05-13 | 1998-05-13 | Dust removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11319740A true JPH11319740A (en) | 1999-11-24 |
| JP3501343B2 JP3501343B2 (en) | 2004-03-02 |
Family
ID=15033572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13040898A Expired - Fee Related JP3501343B2 (en) | 1998-05-13 | 1998-05-13 | Dust removal device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3501343B2 (en) |
| FR (1) | FR2778587A1 (en) |
| GB (1) | GB2337325B (en) |
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| JP2009082874A (en) * | 2007-10-02 | 2009-04-23 | Oji Nepia Kk | Apparatus for removing paper dust and folding apparatus for sanitary paper |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP3501343B2 (en) | 2004-03-02 |
| GB2337325B (en) | 2000-03-29 |
| GB9910936D0 (en) | 1999-07-14 |
| GB2337325A (en) | 1999-11-17 |
| FR2778587A1 (en) | 1999-11-19 |
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