JPH0674874B2 - Suction tube - Google Patents
Suction tubeInfo
- Publication number
- JPH0674874B2 JPH0674874B2 JP17984389A JP17984389A JPH0674874B2 JP H0674874 B2 JPH0674874 B2 JP H0674874B2 JP 17984389 A JP17984389 A JP 17984389A JP 17984389 A JP17984389 A JP 17984389A JP H0674874 B2 JPH0674874 B2 JP H0674874B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- pipe
- suction tube
- air
- vacuum
- 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.)
- Expired - Lifetime
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Air Transport Of Granular Materials (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、真空ポンプ等の吸引装置に連結され、先端開
口より流体を吸引する吸引管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tube which is connected to a suction device such as a vacuum pump and sucks a fluid from a tip opening.
従来の技術 吸引装置の一例として、電子部品を吸着し、しかる後、
これを回路基板に実装するために供せられるバキューム
装置がある。BACKGROUND ART As an example of a suction device, an electronic component is sucked and then,
There is a vacuum device provided for mounting this on a circuit board.
第４図はかかるバキューム装置に装備される吸引管の従
来例を示しており、図上左側の基端側に接続される真空
ポンプ（図示せず）により吸引管１内を負圧にし、先端
開口２に電子部品を吸着する構成をとる。FIG. 4 shows a conventional example of a suction pipe equipped in such a vacuum device. A vacuum pump (not shown) connected to the base end side on the left side of the drawing makes the suction pipe 1 negative pressure and The electronic component is sucked into the opening 2.
発明が解決しようとする課題 しかしながら、上記従来例による場合は、以下に示す理
由により、経時的に吸引管１の吸引効率（吸引能力）が
劣化し、電子部品の吸着ミスを発生するおそれがあっ
た。However, in the case of the above-described conventional example, the suction efficiency (suction capacity) of the suction tube 1 may be deteriorated over time due to the following reasons, and a suction error of an electronic component may occur. It was
即ち、第４図に示すように、管内壁の摩擦抵抗により吸
引管１の管内における速度分布が管中心部を最大流速V
MAXとする放物線状になるため、流速の極めて小さい管
内壁部に塵埃等の異物が付着し、吸引効率を劣化するこ
とになる。That is, as shown in FIG. 4, due to the frictional resistance of the inner wall of the pipe, the velocity distribution inside the suction pipe 1 becomes maximum velocity V in the pipe center.
Since it has a parabolic shape of MAX , foreign matter such as dust adheres to the inner wall of the pipe with a very low flow rate, which deteriorates the suction efficiency.
かかる不具合を防止する方法として、管径の大きな吸引
管１を用い、付着物の悪影響を低減したり、或いはより
大型の真空ポンプを用い、吸引能力を高めることが考え
られる。As a method for preventing such a problem, it is conceivable to use the suction pipe 1 having a large pipe diameter to reduce the adverse effects of the adhered substances, or to use a larger vacuum pump to enhance the suction capability.
しかるに、かかる方法による場合も依然として、経時的
に吸引効率が劣化するおそれがあり、また装置構成が大
掛かりになり、且つコストアップにつながるという新た
な欠点もある。However, even with this method, there are still new drawbacks that the suction efficiency may deteriorate with time, the apparatus configuration becomes large, and the cost increases.
なお、かかる課題は、同一構造の吸引管を用いる限り、
電気掃除機や吸水装置等の他の吸引装置においても同様
にある。In addition, as long as the suction tube of the same structure is used, such a problem is
The same applies to other suction devices such as vacuum cleaners and water absorbing devices.
本発明はかかる従来技術の欠点を解消するためになされ
たものであり、塵埃等の異物の付着を確実に防止でき、
吸引効率を劣化することがない吸引管を提供することを
目的する。The present invention has been made in order to eliminate the drawbacks of the prior art, and can reliably prevent adhesion of foreign matter such as dust,
An object is to provide a suction tube that does not deteriorate suction efficiency.
本発明の他の目的は、吸引装置に組み込む場合に、吸引
装置を小型、且つ安価なものにできる吸引管を提供する
ことにある。Another object of the present invention is to provide a suction tube that can be made small and inexpensive when incorporated in a suction device.
課題を解決するための手段 本発明は、吸引装置に接続され、先端開口より流体を吸
引する吸引管において、管側面の少なくとも一部に、一
方の周端が他方の周端の外方に突出してなる吸い込み口
を形成したことを特徴としている。Means for Solving the Problems The present invention relates to a suction pipe which is connected to a suction device and sucks fluid from a tip opening, in which at least a part of the side surface of the pipe has one circumferential end protruding outward from the other circumferential end. It is characterized by forming a suction port.
作 用 しかるときは、先端開口及び吸い込み口を通して、吸引
管の軸方向及び周方向から流体が管内に夫々流入し、両
流体の流体力学的作用により合流後の流体が管内壁から
管中心に向かう渦巻き状の流れとなり、且つ最終的に管
内中央部を通るスパイラル状の流になって、基端側に向
けて流通することになる。それ故、流体内に塵埃等の異
物が混入している場合であっても、これらが管内壁に付
着することがない。At the time of operation, the fluid flows into the pipe from the axial direction and the circumferential direction of the suction pipe through the tip opening and the suction port, and the combined fluid flows from the inner wall of the pipe to the center of the pipe due to the hydrodynamic action of both fluids. It becomes a spiral flow, and finally becomes a spiral flow passing through the center part of the pipe, and flows toward the base end side. Therefore, even if foreign matter such as dust is mixed in the fluid, these do not adhere to the inner wall of the pipe.
実施例 以下本発明を図面に従って具体的に説明する。第１図は
本発明に係る吸引管をバキューム装置に接続する場合の
実施例を示す側面図、第２図は第１図のII−II線による
断面図である。EXAMPLES The present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view showing an embodiment in which a suction tube according to the present invention is connected to a vacuum device, and FIG. 2 is a sectional view taken along the line II-II in FIG.
この吸引管１は断面円形をなし、図上左側に相当する基
端側にバキューム装置が接続され、バキューム装置を駆
動すると、真空ポンプ（図示せず）が吸引管１内を外気
に対して負圧にする。かくして、矢印Ａで示す軸方向向
きの空気が先端開口２を通して吸引管１内に流入し、併
せて図外の電子部品が先端開口２に吸着されることにな
る。The suction pipe 1 has a circular cross-section, and a vacuum device is connected to the base end side corresponding to the left side in the figure. When the vacuum device is driven, a vacuum pump (not shown) causes a negative pressure in the suction pipe 1 against the outside air. Use pressure. Thus, the air in the axial direction indicated by the arrow A flows into the suction pipe 1 through the tip opening 2, and at the same time, electronic components not shown are adsorbed to the tip opening 2.
これに加えて、吸引管１の先端部には吸引管１の軸長方
向に伸びる適当な長さの吸い込み口３を設けてある。第
２図に示すように、吸い込み口３は吸引管１の周方向に
おける一側端末1aを他側端末1bの外方に引き出すように
成形して形成される。即ち、両側端末1a、1b間に形成さ
れる空間が吸い込み口３となるのである。In addition to this, a suction port 3 of an appropriate length extending in the axial direction of the suction tube 1 is provided at the tip of the suction tube 1. As shown in FIG. 2, the suction port 3 is formed by molding so that the one end 1a in the circumferential direction of the suction tube 1 is pulled out to the other end 1b. That is, the space formed between the terminals 1a and 1b on both sides serves as the suction port 3.
かかる吸い込み口３を設ける場合は、真空ポンプを駆動
すると、第１図及び第２図に矢印Ｂで示す周方向向きの
空気が前記軸方向向きの空気と同時に吸引管１内に流入
することになる。両空気は流入後合流し、第３図（ａ）
に矢印Ｃで示されるような管内壁から管中心に向かう渦
流となり、真空ポンプの吸引力により基端側に吸引さ
れ、最終的に第３図（ｂ）に矢印Ｄで示されるスパイラ
ル状の空気流となって基端側に流通することになる。な
お、一側端末1a及びこれの近傍部位は吸い込み口３から
流入する空気を周方向に向かわせる案内作用を有するの
で、一側端末1aの他側端末1bからの突出量及びその曲率
は適宜の値に選定するものとする。When the suction port 3 is provided, when the vacuum pump is driven, the air in the circumferential direction indicated by the arrow B in FIGS. 1 and 2 flows into the suction pipe 1 at the same time as the air in the axial direction. Become. Both air merges after inflow, and is shown in Fig. 3 (a).
A vortex flow from the inner wall of the pipe to the center of the pipe as shown by arrow C is drawn to the base end side by the suction force of the vacuum pump, and finally spiral air shown by arrow D in FIG. 3 (b). It will flow and flow to the proximal side. Since the one-sided terminal 1a and its vicinity have a guiding function to direct the air flowing in from the suction port 3 in the circumferential direction, the amount of protrusion and the curvature of the one-sided terminal 1a from the other-sided terminal 1b are appropriately determined. The value shall be selected.
かかる吸引管１による場合は、電子部品を吸着する際
に、塵埃等の異物を吸引したとしても、この異物を含む
空気流が管中央部をスパイラル状に流通するので、異物
が管内壁に付着し、吸引効率、即ち電子部品の吸着効率
を劣化することがない。それ故、長期間にわたって確実
な電子部品の吸着動作が行えることになる。In the case of using the suction pipe 1, even if a foreign substance such as dust is sucked when sucking an electronic component, the air flow containing the foreign substance spirally flows in the central portion of the pipe, so that the foreign substance adheres to the inner wall of the pipe. However, the suction efficiency, that is, the suction efficiency of electronic components is not deteriorated. Therefore, the suction operation of the electronic component can be reliably performed for a long period of time.
なお、上記実施例においては、吸い込み口３を先端部に
設けることにしたが、中間部に設けることにしてもよい
し、複数の位置に設けることにしてもよい。In the above embodiment, the suction port 3 is provided at the tip portion, but it may be provided at the intermediate portion or at a plurality of positions.
また、上記実施例では本発明吸引管を電子部品を吸着す
るためのバキューム装置に接続する場合について説明し
たが、本発明吸引管は電気掃除機用のホースや吸水装置
の吸引管としても同様に適用できることは勿論である。Further, in the above embodiment, the case where the suction pipe of the present invention is connected to the vacuum device for sucking the electronic component has been described, but the suction pipe of the present invention is also applicable to a hose for a vacuum cleaner or a suction pipe of a water absorbing device. Of course, it can be applied.
発明の効果 以上の本発明吸引管にあっては、吸引装置に接続する
と、管内中央部を流体がスパイラル状に流通することに
なるので、流体内に混入する塵埃等の異物が管内壁に付
着することがない。従って、長期間にわたって使用する
場合にも吸引効率を劣化することがない。しかも、簡潔
な構造で実現できることになる。Effects of the Invention In the suction pipe of the present invention described above, when connected to the suction device, the fluid flows spirally through the central portion of the pipe, so that foreign matter such as dust mixed in the fluid adheres to the inner wall of the pipe. There is nothing to do. Therefore, the suction efficiency does not deteriorate even when used for a long period of time. Moreover, it can be realized with a simple structure.
それ故、吸引装置に組み込む場合に、吸引装置を小型、
且つ安価なものにできるという利点がある。Therefore, when it is installed in the suction device, the suction device is small,
And there is an advantage that it can be made inexpensive.
第１図は本発明に係る吸引管をバキューム装置に接続す
る場合の実施例を示す側面図、第２図は第１図のII−II
線による断面図、第３図は吸引管内の空気の流れを示す
図面である。 第４図は従来例の不具合を説明するための図面である。 １……吸引管、1a……一側端末、1b……他側端末、２…
…先端開口、３……吸い込み口。FIG. 1 is a side view showing an embodiment in which a suction pipe according to the present invention is connected to a vacuum device, and FIG. 2 is a II-II of FIG.
FIG. 3 is a cross-sectional view taken along the line, showing the flow of air in the suction pipe. FIG. 4 is a drawing for explaining the problems of the conventional example. 1 ... Suction tube, 1a ... One side terminal, 1b ... Other side terminal, 2 ...
… Tip opening, 3… Suction port.
Claims (1)
吸引する吸引管において、 管側面の少なくとも一部に、一方の周端が他方の周端の
外方に突出してなる吸い込み口を形成したことを特徴と
する吸引管。1. A suction pipe which is connected to a suction device and sucks fluid from a tip opening, wherein at least a part of the side surface of the pipe is provided with a suction port in which one peripheral end projects outward from the other peripheral end. A suction tube characterized by having done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17984389A JPH0674874B2 (en) | 1989-07-12 | 1989-07-12 | Suction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17984389A JPH0674874B2 (en) | 1989-07-12 | 1989-07-12 | Suction tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0348090A JPH0348090A (en) | 1991-03-01 |
| JPH0674874B2 true JPH0674874B2 (en) | 1994-09-21 |
Family
ID=16072873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17984389A Expired - Lifetime JPH0674874B2 (en) | 1989-07-12 | 1989-07-12 | Suction tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674874B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998014911A1 (en) * | 1996-09-30 | 1998-04-09 | Kabushiki Kaisha Ace Denken | Conveyance system for place of amusement, conveying article being conveyed by means of air flow |
| WO1998014912A1 (en) * | 1996-09-30 | 1998-04-09 | Kabushiki Kaisha Ace Denken | Game medium transfer system using air flow |
-
1989
- 1989-07-12 JP JP17984389A patent/JPH0674874B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998014911A1 (en) * | 1996-09-30 | 1998-04-09 | Kabushiki Kaisha Ace Denken | Conveyance system for place of amusement, conveying article being conveyed by means of air flow |
| WO1998014912A1 (en) * | 1996-09-30 | 1998-04-09 | Kabushiki Kaisha Ace Denken | Game medium transfer system using air flow |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0348090A (en) | 1991-03-01 |
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