JP2015202425A - Fine particle collection device - Google Patents
Fine particle collection device Download PDFInfo
- Publication number
- JP2015202425A JP2015202425A JP2014081553A JP2014081553A JP2015202425A JP 2015202425 A JP2015202425 A JP 2015202425A JP 2014081553 A JP2014081553 A JP 2014081553A JP 2014081553 A JP2014081553 A JP 2014081553A JP 2015202425 A JP2015202425 A JP 2015202425A
- Authority
- JP
- Japan
- Prior art keywords
- filter layer
- filter
- control means
- collection device
- rotation
- 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.)
- Pending
Links
Images
Abstract
Description
本発明は粒子状物質（Particulate Matter）の捕集装置に関し、特に例えばＰＭ２．５の大部分を占めるサブミクロンオーダーの微小粒子状物質（微粒子）の捕集に効果的である捕集装置に係る。 The present invention relates to a particulate matter (Particulate Matter) collection device, and more particularly to a collection device that is effective for collecting, for example, submicron order fine particulate matter (fine particles) that occupies most of PM2.5. .
近年、大気中に浮遊する微粒子のうち、粒子径が概ね２．５μｍ以下（粒子径２．５μｍで５０％の捕集効率を持つ分粒装置を透過する微粒子）のものをＰＭ２．５と称し、健康への悪影響が心配されている。
また、産業界では各種排ガス中の微粒子の捕集が問題となっている。
気体中に浮遊する粒子状物質をフィルターを用いて集塵（捕集）する場合に従来は、気体の流路を遮るように対立させたフィルターを配置するものが一般的であった。
しかし、フィルターでは０．１〜１μｍのサブミクロン粒子が最も捕れにくいこと、また、フィルターに粒子が捕集されるに伴い圧力損失が増加して通気風量が減少することから、フィルターの捕集能が低下してしまう問題があった。
このような理由から、これまでにサブミクロンオーダーの微粒子を連続的かつ効率的に捕集できるフィルターは希少であった。
In recent years, among the fine particles suspended in the atmosphere, those having a particle size of approximately 2.5 μm or less (particles having a particle size of 2.5 μm and passing through a sorting device having a collection efficiency of 50%) are referred to as PM2.5. Worried about adverse health effects.
In addition, the collection of fine particles in various exhaust gases is a problem in the industry.
Conventionally, when collecting particulate matter floating in a gas using a filter, it is common to dispose a confronting filter so as to block the gas flow path.
However, the filter has the ability to trap 0.1-1 μm submicron particles most easily, and the pressure loss increases as the particles are collected in the filter, resulting in a decrease in ventilation airflow. There was a problem that would decrease.
For these reasons, filters that can collect submicron order fine particles continuously and efficiently have been rare.
例えば特許文献１には、エンボス突起部の形成によりジグザグ形状を保持したエアフィルターを開示する。
これは捕集部の面積拡大により圧力損失の低下の低減を図ったものであるが、その効果は限定的である。
特許文献２には、分離円板を用いて気体を回転させる場合に粒子に加湿し、回転部材の表面に粒子が付着するのを防止した気体の浄化方法を開示するが、加湿装置が必要であること及び捕集できる粒子は比較的径の大きいものに限られる問題があった。
For example,
This is intended to reduce the pressure loss by expanding the area of the collection part, but its effect is limited.
Patent Document 2 discloses a gas purification method in which when a gas is rotated using a separation disk, the particles are humidified to prevent the particles from adhering to the surface of the rotating member. However, a humidifier is required. There is a problem that the particles that can be collected and the particles that can be collected are limited to those having a relatively large diameter.
本発明は捕集能に優れ、フィルター寿命の向上を図った微粒子捕集装置の提供を目的とする。 It is an object of the present invention to provide a particulate collection device that is excellent in collection ability and has improved filter life.
本発明に係る微粒子捕集装置は、微粒子を含有する気体をフィルター層に通過させる手段と、当該フィルター層を気体の通過方向と交差する方向に移動制御するための移動制御手段とを備えたことを特徴とする。
ここで、気体をフィルター層に通過させる手段とは、フィルター層に向けて送風機で気体を送り込むもの、及び逆にフィルター層の後方に吸引装置を配置して気体をフィルター側に吸引する場合等、その手段に制限がない趣旨である。
本発明においてフィルター層を気体の通過方向と交差する方向に移動制御させたのは、従来は微粒子が気体の流路に沿って流れてくるのをフィルター側が単に待ち受けている考えであったのに対して、本発明はフィルター側が積極的に微粒子の捕集に向けて動くという発想の転換を図った趣旨である。
よって、フィルター層の移動方向は必ずしも気体の流路と直交する方向には限らず、斜めに交差する方向でもよい。
このようにフィルター層が積極的に動くことで微粒子の慣性効果による捕集能、微粒子の拡散効果による捕集能、及び遮り効果による捕集能が増強される。
The particulate collection device according to the present invention includes means for passing a gas containing particulates through the filter layer, and movement control means for controlling movement of the filter layer in a direction intersecting with the gas passage direction. It is characterized by.
Here, the means for allowing the gas to pass through the filter layer means that the gas is sent by a blower toward the filter layer, and conversely, when a suction device is arranged behind the filter layer to suck the gas to the filter side, etc. This means that there are no restrictions on the means.
In the present invention, the movement of the filter layer in the direction intersecting the gas passage direction was controlled in the past because the filter side simply waited for the fine particles to flow along the gas flow path. On the other hand, the present invention aims to change the idea that the filter side actively moves toward the collection of fine particles.
Therefore, the moving direction of the filter layer is not necessarily limited to the direction orthogonal to the gas flow path, and may be a direction that crosses obliquely.
As the filter layer moves positively in this manner, the collection ability due to the inertia effect of the fine particles, the collection ability due to the diffusion effect of the fine particles, and the collection ability due to the shielding effect are enhanced.
フィルター層の移動制御手段としては並進移動でもよいが、装置のコンパクト化，捕集した微粒子の回収の容易の観点からは、フィルター層の移動制御手段はフィルター層を回転制御するための回転制御手段であってよい。
例えば、フィルター層は内壁と外壁との間にフィルターを充填した筒体であって、前記回転制御手段は筒体を当該筒体の中心軸廻りに回転制御したものや、フィルター層は円盤状であり、前記回転制御手段は当該円盤中心を軸廻りに回転制御したものが例として挙げられる。
The movement control means of the filter layer may be translational movement, but from the viewpoint of compactness of the apparatus and easy collection of the collected fine particles, the movement control means of the filter layer is a rotation control means for controlling the rotation of the filter layer. It may be.
For example, the filter layer is a cylinder filled with a filter between an inner wall and an outer wall, and the rotation control means is a cylinder whose rotation is controlled around the central axis of the cylinder, or the filter layer is a disc shape. The rotation control means may be one in which the center of the disk is controlled to rotate around the axis.
本発明に係る微粒子捕集装置にあっては、気体の流路とは交差する方向にフィルター層が移動するのでフィルターの捕集能が向上し、例えばフィルター層を回転させると捕集された微粒子が凝集し、大きくなるとそれに作用する遠心力が大きくなり、フィルターの外側からこの凝集した粒子を回収でき、フィルターの寿命の向上を図ることができる。
また、本発明に係る捕集装置の捕集対象物は固体の微粒子のみならず、液体状の微粒子にも適用される。
In the particulate collection device according to the present invention, the filter layer moves in a direction intersecting with the gas flow path, so that the collection ability of the filter is improved. For example, when the filter layer is rotated, the collected particulates When the flocculates and becomes large, the centrifugal force acting on the flocculation increases, and the flocculated particles can be collected from the outside of the filter, thereby improving the life of the filter.
The collection object of the collection device according to the present invention is applicable not only to solid fine particles but also to liquid fine particles.
本発明に係る微粒子の捕集装置１０の模式図を図１に示し、捕集効率Ｅのシミュレーション結果を図３に示す。
円筒型の筒状回転フィルターを用いてシミュレーションしたので説明する。
入力したデータは次のとおりである。
＜空気物性＞
・空気密度ρｆ：１．２［ｋｇ／ｍ３］
・空気粘度μ：１．８１×１０−５［Ｐａ・ｓ］
＜フィルター＞
・フィルター層１１の繊維径 ｄｆ：１０［μｍ］
・充填率 α：０．０５
・内壁１１ａの半径 Ｒ１：３［ｍｍ］
・外壁１１ｂの半径 Ｒ２：２５，３０，４０［ｍｍ］
・気体の流量 Ｑ：１０［リットル／ｍｉｎ］
・フィルターの長さ Ｌ：５０［ｍｍ］
＜粒子物性＞
・密度 ρ：１０００［ｋｇ／ｍ３］
＜捕集効率＞
捕集効率Ｅ（％）は、下記の式で求められる。
Ｅ＝１−ｅｘｐ［−４／π・α／（１−α）・Ｌ／ｄｆ・Ｖｒ／ｕ］
ここで、Ｖｒは遠心沈降速度，ｕは空塔速度を示す。
また、Ｖｒ＝Ｖｔ（ｒω２／ｇ）＝ＶｔＺｃで求められ、Ｖｔは終速沈降速度，ωは角速度，Ｚｃは遠心係数で（Ｒ１＋Ｒ２）／２で求まる。
上記の条件で計算したシミュレーション結果を図３のグラフに示す。
（ａ）はフィルターの回転数を５００，１０００，１５００ｒｐｍに変化させたものであり、（ｂ）はＲ２の半径が２５，３０，４０ｍｍのものである。
この結果から、Ｒ２＝３０で１５００ｒｐｍの回転の場合に粒子径１μｍレベルのものが殆ど捕集でき、１０００ｒｐｍの回転の場合にＲ２＝４０ｍｍで同様の捕集効率が認められた。
A schematic diagram of the
A simulation using a cylindrical cylindrical rotation filter will be described.
The input data is as follows.
<Air properties>
・ Air density ρ f : 1.2 [kg / m 3 ]
Air viscosity μ: 1.81 × 10 −5 [Pa · s]
<Filter>
-Fiber diameter of the filter layer 11 d f : 10 [μm]
・ Filling rate α: 0.05
Of &
The external walls
・ Gas flow rate Q: 10 [liters / min]
-Filter length L: 50 [mm]
<Particle properties>
Density ρ: 1000 [kg / m 3 ]
<Collection efficiency>
The collection efficiency E (%) is obtained by the following formula.
E = 1-exp [-4 / π · α / (1-α) · L / d f · Vr / u]
Here, Vr represents the centrifugal sedimentation speed, and u represents the superficial velocity.
Further, Vr = Vt (rω 2 / g) = VtZc, Vt is a final settling velocity, ω is an angular velocity, and Zc is a centrifugal coefficient, which is obtained by (R 1 + R 2 ) / 2.
The simulation results calculated under the above conditions are shown in the graph of FIG.
(A) is the one in which the rotation speed of the filter is changed to 500, 1000, 1500 rpm, and (b) is one in which the radius of R 2 is 25, 30, 40 mm.
From this result, when R 2 = 30 and rotation at 1500 rpm, most particles having a particle diameter of 1 μm could be collected, and when rotation at 1000 rpm, similar collection efficiency was recognized at R 2 = 40 mm.
図２に本発明に係る捕集装置の第２の実施例を示す。
フィルター層１１は、円盤状になっていて回転軸１２にてモーター１５により回転する。
本実施例は、吸引ファン１３にて気体を吸引する例になっている。
フィルター層１１に捕集された微粒子は凝集し、遠心力にて外側に設けた回収室１４に排出される。
FIG. 2 shows a second embodiment of the collection device according to the present invention.
The
In the present embodiment, gas is sucked by the
The fine particles collected by the
１０ 捕集装置
１１ フィルター層
１１ａ 内壁
１１ｂ 外壁
１２ 回転軸
DESCRIPTION OF
Claims (4)
前記回転制御手段は筒体を当該筒体の中心軸廻りに回転制御したものであることを特徴とする請求項２記載の微粒子捕集装置。 The filter layer is a cylinder filled with a filter between an inner wall and an outer wall,
3. The particle collecting apparatus according to claim 2, wherein the rotation control means is a cylinder that is controlled to rotate about the central axis of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014081553A JP2015202425A (en) | 2014-04-11 | 2014-04-11 | Fine particle collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014081553A JP2015202425A (en) | 2014-04-11 | 2014-04-11 | Fine particle collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2015202425A true JP2015202425A (en) | 2015-11-16 |
Family
ID=54596246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014081553A Pending JP2015202425A (en) | 2014-04-11 | 2014-04-11 | Fine particle collection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2015202425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018183719A (en) * | 2017-04-24 | 2018-11-22 | 日本無機株式会社 | Filter |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113856U (en) * | 1976-02-19 | 1977-08-30 | ||
| JPS5681108U (en) * | 1979-11-29 | 1981-07-01 | ||
| JPS5831023U (en) * | 1981-08-19 | 1983-03-01 | 株式会社クボタ | Gas-liquid contact device |
| JPH0615173A (en) * | 1991-12-30 | 1994-01-25 | Kawasaki Heavy Ind Ltd | Gas purifying catalyst and gas purifying method |
| JPH06262018A (en) * | 1992-05-16 | 1994-09-20 | Turbon Tunzini Klimatechnik Gmbh | Method and device for separating foreign matter from gaseous medium |
| JP2000042330A (en) * | 1998-08-03 | 2000-02-15 | Kiichi Taga | Disk filter |
| JP2001025643A (en) * | 1999-07-15 | 2001-01-30 | Mitsubishi Heavy Ind Ltd | Exhaust gas treatment apparatus |
| JP2001263042A (en) * | 2000-03-15 | 2001-09-26 | Koji Iizuka | Exhaust gas particulate removing device |
| JP2001276540A (en) * | 2000-03-29 | 2001-10-09 | Koji Iizuka | Dust collecting apparatus |
| JP2002276339A (en) * | 2001-03-16 | 2002-09-25 | Isuzu Motors Ltd | Diesel exhaust gas processing device |
| JP2002355513A (en) * | 2001-05-30 | 2002-12-10 | Isuzu Motors Ltd | Felt filter with density adjusting function |
| JP2005076497A (en) * | 2003-08-29 | 2005-03-24 | Nissin Electric Co Ltd | Exhaust gas treatment method and exhaust gas treatment device |
| EP2275187A2 (en) * | 2009-07-14 | 2011-01-19 | Jeven AB | Air filter and air filtering arrangement |
-
2014
- 2014-04-11 JP JP2014081553A patent/JP2015202425A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113856U (en) * | 1976-02-19 | 1977-08-30 | ||
| JPS5681108U (en) * | 1979-11-29 | 1981-07-01 | ||
| JPS5831023U (en) * | 1981-08-19 | 1983-03-01 | 株式会社クボタ | Gas-liquid contact device |
| JPH0615173A (en) * | 1991-12-30 | 1994-01-25 | Kawasaki Heavy Ind Ltd | Gas purifying catalyst and gas purifying method |
| JPH06262018A (en) * | 1992-05-16 | 1994-09-20 | Turbon Tunzini Klimatechnik Gmbh | Method and device for separating foreign matter from gaseous medium |
| JP2000042330A (en) * | 1998-08-03 | 2000-02-15 | Kiichi Taga | Disk filter |
| JP2001025643A (en) * | 1999-07-15 | 2001-01-30 | Mitsubishi Heavy Ind Ltd | Exhaust gas treatment apparatus |
| JP2001263042A (en) * | 2000-03-15 | 2001-09-26 | Koji Iizuka | Exhaust gas particulate removing device |
| JP2001276540A (en) * | 2000-03-29 | 2001-10-09 | Koji Iizuka | Dust collecting apparatus |
| JP2002276339A (en) * | 2001-03-16 | 2002-09-25 | Isuzu Motors Ltd | Diesel exhaust gas processing device |
| JP2002355513A (en) * | 2001-05-30 | 2002-12-10 | Isuzu Motors Ltd | Felt filter with density adjusting function |
| JP2005076497A (en) * | 2003-08-29 | 2005-03-24 | Nissin Electric Co Ltd | Exhaust gas treatment method and exhaust gas treatment device |
| EP2275187A2 (en) * | 2009-07-14 | 2011-01-19 | Jeven AB | Air filter and air filtering arrangement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018183719A (en) * | 2017-04-24 | 2018-11-22 | 日本無機株式会社 | Filter |
| JP7103757B2 (en) | 2017-04-24 | 2022-07-20 | 日本無機株式会社 | Filtration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6060190B2 (en) | Exhaust module with swirler fan | |
| JP2016539801A (en) | Centripetal separation system for purifying air or gas filled with particulates | |
| JP2019122901A (en) | Mist collector | |
| WO2017088584A1 (en) | Triboelectric dust removal device, dust removal system, and dust removal method | |
| CN105423414B (en) | Air purifier and the air conditioner for possessing air-cleaning function | |
| JP2015202425A (en) | Fine particle collection device | |
| CN203874627U (en) | Oil mist collecting device | |
| TW201642075A (en) | Dedusting structure and electronic system using same | |
| EP3188821B1 (en) | Filtering device for dust and other pollutants | |
| KR102258030B1 (en) | Dust collection airflow fan | |
| CN105561717B (en) | Centrifugal desulphurization system gas-liquid separator | |
| JP7103757B2 (en) | Filtration device | |
| CN103657321A (en) | Household indoor air filter | |
| CN105311915A (en) | Filter device and dust removal equipment | |
| WO2019230258A1 (en) | Separation device | |
| RU2596247C1 (en) | Device for cleaning dusty gases | |
| CN204307472U (en) | Double fan air purifier | |
| CN217855278U (en) | Carbon dioxide purification device | |
| CN209109377U (en) | A kind of cement grinding mill exhaust blower exhaust duct | |
| WO2022027210A1 (en) | Device for separating submicron particles in air | |
| KR102172687B1 (en) | Local ventilation equipment | |
| JP6337408B2 (en) | Rotating device | |
| TW201822890A (en) | Electric dust collector | |
| KR100893833B1 (en) | Separating element for pollutant and separating device having the same | |
| CN105193347A (en) | Dust removal device for carpet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20170406 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170914 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20171002 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171122 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180122 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180314 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20180507 |