JPS6145889Y2 - - Google Patents
Info
- Publication number
- JPS6145889Y2 JPS6145889Y2 JP1977119032U JP11903277U JPS6145889Y2 JP S6145889 Y2 JPS6145889 Y2 JP S6145889Y2 JP 1977119032 U JP1977119032 U JP 1977119032U JP 11903277 U JP11903277 U JP 11903277U JP S6145889 Y2 JPS6145889 Y2 JP S6145889Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic precipitator
- flame
- filter
- mesh
- air
- 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
Links
- 239000012717 electrostatic precipitator Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
Description
【考案の詳細な説明】
電気集塵器は、空気をその入口から出口に流し
て、空気中に含まれている塵埃粒子を捕集するも
のであるが、この電気集塵器を、例えばプロパン
ガスを燃料として走行する自動車内に取付け、車
内の空気を清浄にしている時に、事故などにより
自動車内にプロパン−空気混合ガスが充満した場
合、電気集塵器の電極間にたまたまスパークが起
れば、プロパン−空気混合ガスに着火することが
起りうる。[Detailed description of the invention] An electrostatic precipitator collects dust particles contained in the air by flowing air from its inlet to its outlet. When installed inside a car that runs on gas as fuel, and purifying the air inside the car, if the car is filled with a propane-air mixture gas due to an accident, a spark may accidentally occur between the electrodes of the electrostatic precipitator. For example, ignition of the propane-air mixture may occur.
従来の電気集塵器には、例えば実公昭37−1779
号公報、実公昭39−33304号公報に記載されてい
る考案のように気流の入口または出口にフイルタ
ーを取付けたものがあるが、そのフイルターは電
極の保護及び粗大な塵埃粒子を除去する補助的な
集塵機能をもたせているのにすぎず、可燃性ガス
が器内に入り込み、それに着火して爆発した場合
については何ら考慮されていないため、火炎が多
孔板を通して器外へ伝播してしまう。 Conventional electrostatic precipitators include, for example,
There are devices that have a filter attached to the inlet or outlet of the air flow, such as the idea described in Japanese Utility Model Publication No. 39-33304, but the filter is used to protect the electrodes and to remove coarse dust particles. It simply has a dust collection function, and no consideration is given to the possibility that flammable gas may enter the vessel, ignite it, and cause an explosion, resulting in flames propagating outside the vessel through the perforated plate.
ところで、火炎が多孔板などのフイルターを通
過するかどうかを決める因子はフイルターに近ず
く火炎の伝播速度である。 By the way, the factor that determines whether flame passes through a filter such as a perforated plate is the propagation speed of the flame as it approaches the filter.
火炎の伝播速度は、ガスの種類と濃度及び着火
源からの距離に依存し、着火源からの距離が長く
なるほど伝播速度も速くなる。 The speed of flame propagation depends on the type and concentration of the gas and the distance from the ignition source; the longer the distance from the ignition source, the faster the speed of flame propagation.
伝播速度の速い火炎を阻止するためには、目の
細かい網などのフイルターが必要であり、伝播速
度の遅い火炎ならば、目の粗いもので阻止でき
る。 In order to stop flames that propagate quickly, a filter such as a fine-mesh mesh is required; flames that propagate slowly can be stopped with a filter that has a coarse mesh.
本考案は、火炎の上記特性を利用して、電気集
塵機内に入り込んだ可燃性ガスに着火した場合、
火炎の伝播を阻止し、他に影響を与えないように
しようとするものである。 This invention utilizes the above-mentioned characteristics of flame to prevent ignition of flammable gas that has entered the electrostatic precipitator.
The aim is to stop the spread of flames and prevent them from affecting others.
以下図面にもとずいて本考案の実施例を説明す
ると、１は電気集塵器で、これには、例えば第２
図及び第４図示のようにイオン化部の電極と集塵
部の電極を共用した接地平行板電極２，２と、放
電線３の支持を兼ねた高圧平板電極４の間隔ごと
に接地平板電極５と高圧平板電極６からなる一組
の電極を加え、イオン化部１段につき７枚の電極
を設けたものを気流と平行に多数連ねた構成から
成るものを使用する。７は電気集塵器１の収納ケ
ース、８はケース７内において電気集塵器１の気
流流出側に取付けた送風器、９はケース７内にお
いて電気集塵器１の気流流入口と流出口に装着し
たフイルターで、これには、普通の網、ラズ網、
ハニカム状の網、焼結金属板、金属線くずを詰め
込んだものなど金属その他燃えにくい材質で作ら
れた網、多孔板など多数の通気孔を有し、かつそ
の通気孔の大きさを電気集塵器１内における火炎
の伝播速度の最大値に応じて調整したものを使用
し、ケース７との間に隙間があると、そこから火
炎が逸走するので、ケース７の内壁との間に隙間
がないように取付けてある。 Embodiments of the present invention will be described below based on the drawings. 1 is an electrostatic precipitator, which includes, for example, a second
As shown in FIGS. 4 and 4, grounded parallel plate electrodes 2, 2 which share the electrodes of the ionization part and the electrode of the dust collection part, and a grounded flat plate electrode 5 at each interval between the high voltage flat plate electrode 4 which also serves as support for the discharge line 3. In addition, a set of electrodes consisting of a high-voltage plate electrode 6 and a high-voltage flat plate electrode 6 are added, and a structure in which seven electrodes are provided per one stage of the ionization section is used, and a large number of these electrodes are arranged in parallel with the air flow. 7 is a storage case for the electrostatic precipitator 1; 8 is a blower installed on the airflow outflow side of the electrostatic precipitator 1 in the case 7; 9 is an airflow inlet and outlet of the electrostatic precipitator 1 in the case 7. This filter is attached to a regular net, a razz net,
A honeycomb-shaped mesh, a sintered metal plate, a mesh made of metal or other non-combustible material such as one filled with metal wire scraps, or a perforated plate has many ventilation holes, and the size of the ventilation holes can be adjusted by electrical collection. Use a filter that is adjusted according to the maximum flame propagation speed in the dust container 1, and make sure that there is a gap between the case 7 and the inner wall of the case 7, because if there is a gap, the flame will escape from there. It is installed so that there is no
ところで、プロパン−空気混合ガスに着火して
発生させた火炎の伝播を金網で阻止する実験をす
ると、火炎の速度と金網のメツシユ数または各網
目の幅との間に第５図のグラフに示すような実験
値が得られる。このグラフにおいて実験値をあら
わす直線Ｅを境界にして右上斜線部分は火炎が金
網を通過してしまう領域を表わし、左下部分は火
炎が金網で阻止される領域を表わしている。この
グラフから、例えば24メツシユの場合は、火炎の
速度が4.5ｍ／秒より遅ければ、火炎が金網で阻
止されることがわかり、16メツシユの場合は、火
炎の速度が2.5ｍ／秒以上となれば、火炎が金網
を通過してしまうことがわかる。 By the way, in an experiment in which a wire mesh was used to block the propagation of the flame generated by igniting a propane-air mixed gas, the graph in Figure 5 shows the relationship between the flame speed and the number of meshes of the wire mesh or the width of each mesh. An experimental value like this can be obtained. In this graph, with the straight line E representing the experimental values as the boundary, the upper right diagonally shaded area represents the area where the flame passes through the wire mesh, and the lower left area represents the area where the flame is blocked by the wire mesh. This graph shows that, for example, in the case of 24 meshes, if the flame speed is slower than 4.5 m/s, the flame will be blocked by the wire mesh, and in the case of 16 meshes, the flame speed is 2.5 m/s or more. You can see that the flame will pass through the wire mesh.
因に、上記の構成を有する電気集塵器を内側断
面積が247mm×94mmの収納ケースに収納し、プロ
パン−空気混合ガスを送風器８により流して実験
したところ、着火源からの距離が97mm（電気集塵
器１の流入口から流出口に至る距離）でガス濃度
４％程度のとき、火炎の伝播速度が４ｍ／秒程度
で最大になるという実験結果が得られ、このとき
金網のフイルターを用いた場合、24メツシユない
し30メツシユ程度の網で火炎の伝播が阻止される
という実験結果が得られた。 Incidentally, when we conducted an experiment by storing the electrostatic precipitator having the above configuration in a storage case with an inner cross-sectional area of 247 mm x 94 mm and flowing a propane-air mixed gas through blower 8, we found that the distance from the ignition source was An experimental result was obtained that when the gas concentration is about 4% at a distance of 97 mm (distance from the inlet to the outlet of electrostatic precipitator 1), the flame propagation speed reaches its maximum at about 4 m/sec. When a filter is used, experimental results have been obtained that flame propagation can be blocked with a mesh of about 24 to 30 meshes.
上記の実施例では、電気集塵器１の気流流入口
と流出口とにフイルター９を装着する例を示した
が、第３図示のように、電気集塵器１の周囲にフ
イルター９を装着してもよい。また、フイルター
９の取付は、取外し不能または取外し可能のいず
れでもよく、さらにフイルター９の保護や塵埃除
去のために金網などを付加してもよい。 In the above embodiment, the filter 9 is attached to the air inlet and outlet of the electrostatic precipitator 1, but as shown in the third diagram, the filter 9 is attached around the electrostatic precipitator 1. You may. Further, the filter 9 may be attached either non-removably or removably, and a wire mesh or the like may be added to protect the filter 9 and remove dust.
また、電気集塵器には、上記実施例に示した平
板電極を気流と平行に設けた電気集塵器に限ら
ず、各種構造の電気集塵器を採用しうる。 Furthermore, the electrostatic precipitator is not limited to the electrostatic precipitator shown in the above embodiment in which the flat plate electrode is provided in parallel to the airflow, but electrostatic precipitators having various structures may be employed.
本考案は、叙上のように電気集塵器の気流流入
口と流出口の両方に、孔の大きさを火炎の伝播速
度が最大速度のとき火炎の伝播を阻止する大きさ
以下の大きさにした多数の通気孔を有し、かつ燃
えにくい材質製のフイルターを、火炎が電気集塵
器外へ逸走する隙間がないように装着するように
したから、電気集塵器内に可燃性ガスが入り込
み、電極内に発生したスパークにより着火したと
しても、フイルターにより火炎が器外へ伝播する
のを確実に阻止することができ、電気集塵器を取
付けてある車内、室内などで、電気集塵器が発火
源になる危険は皆無にしうる。 As mentioned above, the size of the holes at both the air inlet and outlet of the electrostatic precipitator is smaller than the size that prevents flame propagation when the flame propagation speed is at its maximum speed. The filter, which has a large number of ventilation holes and is made of a non-flammable material, is installed so that there are no gaps for flames to escape outside the electrostatic precipitator. Even if a flame enters the electrode and is ignited by the spark generated inside the electrode, the filter can reliably prevent the flame from propagating outside the device. The risk of the dust container becoming a source of ignition can be completely eliminated.
第１図は本考案に係る電気集塵器の原理図、第
２図ないし第４図は本考案に使用する電気集塵器
の電極板の配列の一例を示すもので、第２図は正
面図、第３図は第２図のＡ−Ａ線断面図、第４図
は第２図の平面図、第５図は火炎をフイルターで
阻止する実験結果の一例を示すグラフである。
１……電気集塵器、７……収納ケース、８……
送風器、９……フイルター。
Fig. 1 is a principle diagram of the electrostatic precipitator according to the present invention, Figs. 2 to 4 show an example of the arrangement of electrode plates of the electrostatic precipitator used in the present invention, and Fig. 2 is a front view. 3 is a sectional view taken along the line A--A in FIG. 2, FIG. 4 is a plan view of FIG. 2, and FIG. 5 is a graph showing an example of the results of an experiment in which flames are blocked by a filter. 1...Electric precipitator, 7...Storage case, 8...
Air blower, 9...filter.
Claims (1)
に、孔の大きさを火炎の伝播速度が最大速度のと
き火炎の伝播を阻止する大きさ以下の大きさにし
た多数の通気孔を有し、かつ燃えにくい材質製の
フイルターを、火炎が電気集塵器外へ逸走する隙
間がないように装着して成る電気集塵器。 An electrostatic precipitator has a large number of vent holes at both the inlet and outlet of the air flow, the size of which is less than or equal to the size that prevents flame propagation when the flame propagation velocity is at its maximum speed. An electrostatic precipitator that is equipped with a filter made of a nonflammable material so that there is no gap for flame to escape outside the electrostatic precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977119032U JPS6145889Y2 (en) | 1977-09-06 | 1977-09-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977119032U JPS6145889Y2 (en) | 1977-09-06 | 1977-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5445473U JPS5445473U (en) | 1979-03-29 |
| JPS6145889Y2 true JPS6145889Y2 (en) | 1986-12-23 |
Family
ID=29073937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977119032U Expired JPS6145889Y2 (en) | 1977-09-06 | 1977-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145889Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9824532D0 (en) * | 1998-11-10 | 1999-01-06 | Colson Engineering Limited | Flame arrester |
-
1977
- 1977-09-06 JP JP1977119032U patent/JPS6145889Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5445473U (en) | 1979-03-29 |
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