JPS61268324A - Filter material - Google Patents
Filter materialInfo
- Publication number
- JPS61268324A JPS61268324A JP11075985A JP11075985A JPS61268324A JP S61268324 A JPS61268324 A JP S61268324A JP 11075985 A JP11075985 A JP 11075985A JP 11075985 A JP11075985 A JP 11075985A JP S61268324 A JPS61268324 A JP S61268324A
- Authority
- JP
- Japan
- Prior art keywords
- density
- filter
- fluid
- filtration
- filter material
- 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
- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 abstract description 19
- 239000002184 metal Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 25
- 239000002245 particle Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- -1 rime Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 241001441724 Tetraodontidae Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は濾過材に関し、特に内燃機関のオイルフィルタ
ーやエアーフィルターなどに好適な濾過材に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a filter material, and particularly to a filter material suitable for oil filters, air filters, etc. of internal combustion engines.
自動車のオイルフィルターやエアーフィルターに使用覆
る濾過材として要求される条件としては、被濾過流体中
に存在するダストなどの微粒子を効果的に除去する濾過
性能を有し、しかも長期間にわたって食好な濾過性能を
維持し続けることが特に重要である。The requirements for a filtration material used in automobile oil filters and air filters are that it has filtration performance that effectively removes fine particles such as dust present in the fluid to be filtered, and that it remains palatable for a long period of time. It is especially important to continue to maintain filtration performance.
このような観点で、従来から様々な濾過材が提案されて
いるが、濾過性能の向上とライフの長期化との双方を同
時に具備させるという点においては、従来の濾過材は必
ずしも充分満足のいくものではない。From this point of view, various filtration media have been proposed in the past, but conventional filtration media are not necessarily fully satisfactory in terms of simultaneously improving filtration performance and prolonging the service life. It's not a thing.
たとえば、従来、繊維密度の異なる濾紙を抄合せるなど
して、濾紙の厚さ方向に密度勾配を設けた濾過材が知ら
れている（たとえば特公昭５４−４０７７８号公報）。For example, a filter material is known in which a density gradient is provided in the thickness direction of the filter paper by combining filter papers with different fiber densities (for example, Japanese Patent Publication No. 40778/1983).
これら密度勾配型濾過材は、被濾過流体の流れの−［流
側から下流側の方向に、粗から密へ変化するように形成
されているので、低密度層で大寸法粒子を捕捉し高密度
層で微細粒子が捕捉されることにより、良好なふるい分
は効果とある程度のライフの向上を図ることができる点
ですぐれているが、以下のような欠点を有している。These density gradient type filter media are formed so that the flow of the fluid to be filtered changes from coarse to dense in the direction from the flow side to the downstream side, so large particles are captured in the low density layer and the Although fine particles are trapped in the density layer, a good sieve fraction is excellent in that it is effective and can improve the life to some extent, but it has the following drawbacks.
（イ） 従来の密度勾配型濾過材においては、濾過材を
通過する際の流速が速く、単なる接触によるダスト付着
く捕捉）が生じにくく深層部に突きささる様に強固に捕
捉されるため（いわゆる深層濾過）、濾材の目づまりが
おこりやすく、圧力損失がいきおい、増大するという問
題がある。(b) In conventional density gradient type filter media, the flow velocity when passing through the filter media is high, making it difficult for dust to adhere and be captured by mere contact, and the dust is firmly captured so that it penetrates into the deep layer ( (so-called deep filtration), the problem is that the filter media is easily clogged, leading to increased pressure loss.
（ロ） 従来の濾過材は、被濾過流体の上流側の濾材表
面の気孔率が大きいので、ダストが濾材の表面層内に取
り込まれやすく、このため濾材表面層上にダストケーキ
層が形成されにくいという欠点がある。したがって、ケ
ーキ層による濾過機能（すなわちプライマルフィルタ機
能）を期待することはできず、［］ングライフ化を図る
Ｌで大きな制限がある。(b) In conventional filter media, the porosity of the surface of the filter media on the upstream side of the fluid to be filtered is large, so dust is easily incorporated into the surface layer of the filter media, resulting in the formation of a dust cake layer on the surface layer of the filter media. The drawback is that it is difficult. Therefore, a filtration function (that is, a primal filter function) cannot be expected by the cake layer, and there are major limitations in L, which aims to increase the life of the cake layer.
〔発明の概要〕
本発明は、上述した点に鑑みてなされたものであり、連
通性能とロングライフ化の双方にすぐれた濾過材を提供
覆ることを目的とする。[Summary of the Invention] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a filter material that is excellent in both communication performance and long life.
上記目的を達成するため、本発明の濾過材は、濾過材の
裏面に凹凸が設けられ、かつ、被濾過流体の流れの上流
側の濾過材表面に起毛層が形成されてなることを特徴と
している。In order to achieve the above object, the filter medium of the present invention is characterized in that the back surface of the filter medium is provided with irregularities, and a raised layer is formed on the surface of the filter medium on the upstream side of the flow of the fluid to be filtered. There is.
（発明の実施例）
以下、本発明の濾過材を添付図面に示す実施例に基づい
て詳細に説明する。(Embodiments of the Invention) Hereinafter, the filter medium of the present invention will be described in detail based on embodiments shown in the accompanying drawings.
第１図の断面概念図に示すように、本発明の濾過材は、
濾過材の基材１の裏面側に凹凸が設けられ、かつ、被濾
過流体の流れ（図中の矢印の方向）の上流側の基材表面
に起毛２が設けられ、これが起毛層を構成している。As shown in the cross-sectional conceptual diagram of FIG. 1, the filter material of the present invention is
Irregularities are provided on the back side of the base material 1 of the filtration material, and a raised layer 2 is provided on the surface of the base material on the upstream side of the flow of the fluid to be filtered (in the direction of the arrow in the figure), and this constitutes a raised layer. ing.
このように本発明の濾過材は、被濾過流体の上流側に起
毛層が形成されているので、この起毛層によってダスト
が樹氷のように捕捉されて起毛層上にダストケーキ層が
形成されやすくなり、このケーキ層による濾過作用（ブ
ライマルフィルター機能）を利用することにより濾過性
能の一層の向上を図ることができる。In this way, the filtration material of the present invention has a raised layer formed on the upstream side of the fluid to be filtered, so that dust is easily captured by this raised layer like rime, and a dust cake layer is easily formed on the raised layer. By utilizing the filtration action (brimal filter function) of this cake layer, the filtration performance can be further improved.
なお、上記起毛層は、通常、濾過材の構成ＩＩＨの端部
が濾過材表面から突起して毛羽立った状態として構成さ
れ得る。表面からの起毛は、粗大なダスト粒子が集塵さ
れてダストケーキ層が形成されやすくなる程度で充分で
あ□す、起毛部の密度も、必ずしも芝生状の程度に密で
ある必要はない。たとえば、ダストの大きさが５〜７０
μ程痕であるとき、繊維の突出部の長さは８０〜３００
μであれば充分である。In addition, the said raised layer can be normally comprised in the state where the edge part of structure IIH of a filter medium protrudes from the surface of a filter medium, and is fluffed. The nap from the surface is sufficient to easily collect coarse dust particles and form a dust cake layer, and the density of the nap does not necessarily have to be as dense as that of a lawn. For example, if the dust size is 5 to 70
When it is a microscopic trace, the length of the protruding part of the fiber is 80 to 300
μ is sufficient.
また、製造工程において、濾過材表面または裏面に凹凸
形状を設けることによって濾過材中に密度勾配を形成す
ることが容易にできる。Further, in the manufacturing process, by providing an uneven shape on the surface or back surface of the filter material, it is possible to easily form a density gradient in the filter material.
さらにまた、本発明の濾過材は、裏面に凹凸が設けられ
ているので、パンチングメタル等金具への接触面積が少
なくなり、その結果として、濾過面積を大きくすること
ができ、ライフの向上に寄与する。Furthermore, since the filter material of the present invention has irregularities on the back surface, the contact area with metal fittings such as punched metal is reduced, and as a result, the filtration area can be increased, contributing to an improvement in life. do.
第２図および第３図に示す濾過材は、濾過材の厚さ方向
と面方向の双方に密度勾配を設けた場合の実施例である
。すなわち、基材１の厚さ方向において、流体の入口側
から出口側に向けて、気孔３の径が次第に小さくなるよ
うな密度勾配を有し、さらに濾過材の面方向においても
、気孔径の小さな高密度部分と、気孔径の大きな低密度
部分とが各々凸部、凹部に設けられている。したがって
、まず、厚さ方向において密度勾配を有しているので、
低密度層で大寸法粒子のダストを捕捉し、下流側に行く
に従って小粒径のものを順次捕捉していくことができ、
良好なふるい分は効果が発揮されるとともにダスト保持
量の増大化を図ることができる。The filter media shown in FIGS. 2 and 3 are examples in which density gradients are provided in both the thickness direction and surface direction of the filter media. That is, in the thickness direction of the base material 1, there is a density gradient such that the diameter of the pores 3 gradually decreases from the inlet side to the outlet side of the fluid, and furthermore, in the surface direction of the filter material, the pore diameter also decreases. A small high-density portion and a low-density portion with a large pore diameter are provided in the convex portion and the concave portion, respectively. Therefore, first of all, since there is a density gradient in the thickness direction,
It is possible to capture large-sized dust particles in the low-density layer, and sequentially capture smaller-sized particles as you move downstream.
A good sieve content is effective and can increase the amount of dust retained.
さらに、濾過材の面方向において、相対的に小さな気孔
径を有する高密度部分と大きな気孔径を有する低密度部
分とが均一に分布形成されているので、ダストの捕捉を
段階的に進行させることができる。すなわら、ダスト捕
捉による目づまりは、まず高密度部分で生じ、次いで低
密度部分に移行するので、面方向の密度が一定の場合に
比べて圧力損失の急激な増大を防止することができ、一
層のロンフグライフ化を図ることができる。さらに、微
細粒子の除去は高密度部分で行なわれ、大寸法粒子の除
去は低密度部分の層で行われやすくなるので、両層の密
度範囲ならびに面積割合を適宜選択することによっても
濾過性能の向ｔを図ることができる。また、面方向の密
度差は、連続的あるいは段階的に変化させてもよい。Furthermore, since the high-density portions with relatively small pore diameters and the low-density portions with large pore diameters are uniformly distributed in the surface direction of the filter medium, dust capture can progress in stages. I can do it. In other words, clogging due to dust trapping occurs first in high-density areas and then moves to low-density areas, making it possible to prevent a sudden increase in pressure loss compared to when the density in the planar direction is constant. , it is possible to achieve a longer pufferfish life. Furthermore, since fine particles are removed more easily in the high-density layer, and large particles are more likely to be removed in the lower-density layer, filtration performance can be improved by appropriately selecting the density range and area ratio of both layers. It is possible to aim for the direction t. Further, the density difference in the planar direction may be changed continuously or stepwise.
さらに、図示されてはいないが、第２図において、流体
の上流側に凹凸を設けることも濾過性能の向上を図る上
で有利である。すなわち、一般に、大きな粒子は低密度
部に集積され、微小粒子は高密度部で捕捉されやすいの
で、上流側の凹部を低密度部とし、凸部を高密度部とす
ることによって、形成されるダストケーキ層のレベルを
一定に保持し、これにより凹凸部の流速割合いを一定に
維持して濾過性能を向上させることができる。Furthermore, although not shown, in FIG. 2, it is advantageous to provide unevenness on the upstream side of the fluid in order to improve the filtration performance. In other words, in general, large particles accumulate in low-density areas, and small particles tend to be captured in high-density areas. By keeping the level of the dust cake layer constant, the flow rate ratio of the uneven portion can be kept constant and the filtration performance can be improved.
濾過材の構成材料としては、従来、濾紙原料として使用
されている天然繊維、合成ＩＩＮならびにこれらの混合
物が用いられ、必要に応じて、バインダー、着色剤など
の添加剤を用いることもできる。As constituent materials of the filter medium, natural fibers, synthetic IIN, and mixtures thereof, which are conventionally used as raw materials for filter paper, are used, and additives such as binders and colorants can also be used as necessary.
濾過材に密度分布を設ける方法としては、例えば、ＩＩ
ＩＩＨｌｔの異なる濾過材を抄き合わせて一体化する方
法、性状、繊維分布の異なる抄紙原料スラリーを抄造工
程で段階的に供給して抄紙する方法などがとられ得る。As a method of providing density distribution in the filter medium, for example, II
Possible methods include a method of combining and integrating filter media of different IIHlt, and a method of supplying papermaking raw material slurries having different properties and fiber distributions in stages during the papermaking process.
また、濾過材の表面を起毛させる方法としては、たとえ
ば、抄造網の片面に抄紙原料スラリー流を供給すると同
時にその抄造網の他面から吸引することにより、ＩＩＨ
の長手方向を抄紙表面に対して垂直方向に配向させて起
毛層を効果的に形成することができる。In addition, as a method for raising the surface of the filter material, for example, by supplying a papermaking raw material slurry flow to one side of the papermaking net and simultaneously sucking it from the other side of the papermaking net, IIH
A raised layer can be effectively formed by orienting the longitudinal direction of the paper in a direction perpendicular to the surface of the paper.
本発明の濾過材を内燃機関のエアーフィルターやオイル
フィルターに用いる場合は、濾過面積を拡大する上で、
断面が菊花状の円筒形に成形することが好ましく、ざら
に端部に円板状金属プレー１・を接合するか、あるいは
樹脂製プレー１〜を一体成形もしくは接着するなどして
フィルター構造とする。When using the filter material of the present invention for an air filter or oil filter of an internal combustion engine, in order to expand the filtration area,
It is preferable to form it into a cylindrical shape with a chrysanthemum-like cross section, and the filter structure is formed by joining a disc-shaped metal plate 1 to the rough end, or by integrally molding or gluing resin plates 1 to 1. .
濾過性能試験例
本発明の濾過材Ａと従来の濾過材Ｂについて、Ｊ ｌ５
−Ｄｉ ６１１に記載された濾過性能試験を行なった場
合の結果を第４図に示す。Filtration performance test example Regarding filter material A of the present invention and conventional filter material B, J l5
The results of the filtration performance test described in -Di 611 are shown in FIG.
この際の、濾過材の有効濾過面積は１０００Ｃｄであり
、流量は１０ｐ／分、油温は８０℃である。At this time, the effective filtration area of the filter material was 1000 Cd, the flow rate was 10 p/min, and the oil temperature was 80°C.
第４図から明らかなように、本発明の濾過材は、被濾過
流体中のダスト捕捉に伴う圧力損失の増加を、濾過効率
に変動なくゆるやかに進行させることができ、濾過材の
ライフを一層向上させることができる。As is clear from FIG. 4, the filter medium of the present invention can gradually increase the pressure loss caused by dust capture in the fluid to be filtered without any change in filtration efficiency, further extending the life of the filter medium. can be improved.
本発明の濾過材は、裏面に凹凸が設けられているので、
パンチングメタル等金具への接触面積が少なくなり、そ
の結果として、濾過面積を大きくすることができ、ライ
フの向上に寄与する。Since the filter medium of the present invention has irregularities on the back surface,
The contact area with metal fittings such as punched metal is reduced, and as a result, the filtration area can be increased, contributing to an improvement in life.
さらに本発明の濾過材は、流体の上流側表面に起毛層が
設けられているので、濾過材表面にダストケーキ層が形
成されやすくなり、このケーキ層のプライマルフィルタ
ー効果によって濾過性能とライフの向上を同時に図るこ
とができる。Furthermore, since the filtration material of the present invention has a raised layer on the surface upstream of the fluid, a dust cake layer is easily formed on the surface of the filtration material, and the primal filter effect of this cake layer improves filtration performance and life. can be achieved at the same time.
第１図〜第３図は、各々本発明の実施例に係る濾過材の
断面の概念図であり、第４図は、濾過性能の試験結果を
示すグラフである。
１・・・基材、２・・・起毛、３・・・気孔。1 to 3 are conceptual diagrams of cross sections of filter media according to examples of the present invention, and FIG. 4 is a graph showing test results of filtration performance. 1... Base material, 2... Raised, 3... Stomata.
Claims (1)
の流れの上流側の濾過材表面に起毛層が形成されてなる
ことを特徴とする、濾過材。 ２、濾過材の厚さ方向において、被濾過流体の流れの上
流側が低密度で下流側が高密度であるような密度勾配を
有し、かつ、濾過材の面方向においても高密度部と低密
度部とが散在して形成されている、特許請求の範囲第１
項に記載の濾過材。 ３、前記濾過材の面方向における高密度部が凸部あるい
は凹部の一方部に設けられ、低密度部が凹部あるいは凸
部の他方部に設けられている、特許請求の範囲第２項に
記載の濾過材。[Scope of Claims] 1. A filtration material, characterized in that the back surface of the filtration material is provided with irregularities, and a raised layer is formed on the surface of the filtration material on the upstream side of the flow of the fluid to be filtered. 2. In the thickness direction of the filter medium, there is a density gradient such that the upstream side of the flow of the fluid to be filtered is low density and the downstream side is high density, and also in the plane direction of the filter medium, there is a high density part and a low density part Claim 1, which is formed by interspersing the
Filtration media described in section. 3. According to claim 2, the high-density portion in the surface direction of the filter medium is provided in one of the convex portions or the concave portions, and the low-density portion is provided in the other portion of the concave portions or the convex portions. filtration media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075985A JPS61268324A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075985A JPS61268324A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61268324A true JPS61268324A (en) | 1986-11-27 |
| JPH0446605B2 JPH0446605B2 (en) | 1992-07-30 |
Family
ID=14543841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11075985A Granted JPS61268324A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61268324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01194913A (en) * | 1988-01-29 | 1989-08-04 | Tsuchiya Mfg Co Ltd | Coarse and fine filter medium and manufacture thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440778A (en) * | 1977-02-10 | 1979-03-30 | Createchnic Patent Ag | Plastic seal for container of fixed or variable form* and method of operating container seal |
| JPS5599315A (en) * | 1979-01-24 | 1980-07-29 | Toray Ind Inc | Filter made of nonwoven fabric |
-
1985
- 1985-05-23 JP JP11075985A patent/JPS61268324A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440778A (en) * | 1977-02-10 | 1979-03-30 | Createchnic Patent Ag | Plastic seal for container of fixed or variable form* and method of operating container seal |
| JPS5599315A (en) * | 1979-01-24 | 1980-07-29 | Toray Ind Inc | Filter made of nonwoven fabric |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01194913A (en) * | 1988-01-29 | 1989-08-04 | Tsuchiya Mfg Co Ltd | Coarse and fine filter medium and manufacture thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0446605B2 (en) | 1992-07-30 |
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