JPS61268323A - Filter material - Google Patents
Filter materialInfo
- Publication number
- JPS61268323A JPS61268323A JP11075885A JP11075885A JPS61268323A JP S61268323 A JPS61268323 A JP S61268323A JP 11075885 A JP11075885 A JP 11075885A JP 11075885 A JP11075885 A JP 11075885A JP S61268323 A JPS61268323 A JP S61268323A
- Authority
- JP
- Japan
- Prior art keywords
- density
- layer
- parts
- filter
- base 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 38
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 33
- 239000002245 particle Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 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
- 238000011118 depth filtration Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test 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
- 238000007873 sieving Methods 0.000 description 1
- 230000002195 synergetic 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す
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良好な濾過性能を
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 to have filtration performance that effectively removes dust and other particulates present in the fluid to be filtered, and to maintain good filtration over a long period of time. It is especially important to continue to maintain 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上流側
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 upstream side to the downstream side, so the low density layer captures large particles and the high density layer A good sieve is excellent in that it is effective and can improve life to some extent by trapping fine particles, 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、単なる接触によるゲス１〜付
着（捕捉）が生じにくく深層部に突きざざる様に強固に
捕捉されるため（いわゆる深層濾過）、′ａＩの目づま
りがおこりやすく、圧力損失がいぎ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, and it is difficult for gas particles to adhere (capture) due to mere contact, and is firmly captured to prevent them from penetrating into deep layers. Because of this (so-called depth filtration), clogging of 'aI is likely to occur, and there is a problem that pressure loss increases significantly.
（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］・が濾材の表面層内に
取り込まれやすく、このためｉｌＩ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（すなわちプイマルフィル
タ機能）を期待することはできず、ロングライフ化を図
る上で大きな制限がある。(b) In conventional filter media, since the porosity of the surface of the filter media on the upstream side of the fluid to be filtered is large, dust is easily incorporated into the surface layer of the filter media, and therefore a dust cake layer is formed on the surface layer of the filter material. The disadvantage is that it is difficult to form. Therefore, it is not possible to expect a filtration function (that is, a puimal filter function) by the cake layer, and there are major limitations in achieving a long life.
本発明は、上述した点に鑑みてなされたものであり、濾
過性能とロングライフ化の双方にすぐれた濾過材を提供
することを目的とする。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 filtration 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
面方向に対して＾密度部と低密度部とが散在して形成さ
れ、被濾過流体の流れの上流側の濾過材表面に起毛層が
設けられるとともに、被濾過流体の流れの下流側の濾過
材表面に該上流側の表面密度よりも高い密度を有する高
密度層が形成されてなることを特徴とする。In order to achieve the above object, the filter medium of the present invention is formed such that density areas and low density areas are scattered in the surface direction of the filter medium, and the filter medium surface is formed on the upstream side of the flow of the fluid to be filtered. It is characterized in that a raised layer is provided and a high-density layer having a higher density than the surface density on the upstream side is formed on the surface of the filter material on the downstream side of the flow of the fluid to be filtered.
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。EMBODIMENT OF THE INVENTION Hereinafter, the filter material of this invention will be explained in detail based on the Example shown in an accompanying drawing.
第１図の断面概念図に示すように、本発明の濾過材は、
基材１の面方向において、相対的に小さな気孔２を有す
る高密度部と大きな気孔２を有Ｊる低密度部とが設けら
れている。また、流体の流れ（図中の矢印の方向）の−
上流側のＭ ４４表面には起毛４が形成されておりこれ
が起毛層を構成し、さらに下流側のＭ材表面には、該上
流側の表面密度よりも高い密度を有する高密度層３が形
成されている。As shown in the cross-sectional conceptual diagram of FIG. 1, the filter material of the present invention is
In the surface direction of the base material 1, a high-density portion having relatively small pores 2 and a low-density portion having relatively large pores 2 are provided. Also, the − of the fluid flow (direction of the arrow in the figure)
A raised layer 4 is formed on the surface of the M 44 on the upstream side, which constitutes a raised layer, and a high-density layer 3 having a higher density than the surface density on the upstream side is further formed on the surface of the M material on the downstream side. has been done.
このように、本発明の濾過材は、基材の面方向に対して
密１α勾配を有しているので、ダストの捕・ 捉を段階
的に進行させることができる。ずなわち、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
密度部分の層で行な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
性能の向上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。In this manner, the filter medium of the present invention has a dense 1α gradient in the plane direction of the base material, so that dust can be captured and captured in stages. In other words, clogging due to dust trapping first occurs 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 an even longer 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. You can improve your performance. Further, the density difference in the planar direction may be changed continuously or stepwise.
また、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、この起毛層ににつてダストが樹
氷のＪ：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（プラ
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 addition, since the filtration material of the present invention has a raised layer formed on the upstream side of the fluid to be filtered, dust is captured by the rime on this raised layer, and a dust cake layer is formed on the raised layer. By utilizing the filtration action (primal filter function) of this cake layer, the filtration performance can be further improved.
さらに、本発明の濾過材は、下流側の１ＡＩＪ表面に高
密度層が設けられているので、前記ダストケーキ層と高
密度層間の基材内部に形成されるサトンバーの作用によ
り、ライフの向上と圧力損失の増大防１１−を図ること
ができる。すなわち、基材１内に侵入したダス１〜はチ
ャンバー内をスムーズにしかも自由に移動することがで
きるので、流れ抵抗の増大を緩和するトで有利である。Furthermore, since the filter medium of the present invention has a high-density layer provided on the 1AIJ surface on the downstream side, the life can be improved by the action of the saton bar formed inside the base material between the dust cake layer and the high-density layer. It is possible to prevent an increase in pressure loss (11-). That is, the dust 1~ that has entered the base material 1 can move smoothly and freely within the chamber, which is advantageous in mitigating an increase in flow resistance.
ざらに、高密度層３の密度は、上流側の基材表面密度に
りも高いので、侵入したダス１−はチャンバー内に効果
的に集積され、ダスト保持量が増大することによってロ
ングライフ化を図ることができる。In general, the density of the high-density layer 3 is also higher than the surface density of the base material on the upstream side, so the dust 1- that has entered is effectively accumulated in the chamber, increasing the amount of dust retained, resulting in a longer life. can be achieved.
なお、上記起毛層は、通常、濾過材の構成繊維の端部が
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
り、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 Ｉ
ｔ程度であるとき、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 usually be comprised in the state where the edge part of the constituent fiber 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 I
t, the length of the fiber protrusion is 80 to 300
μ is sufficient.
第２図および第３図に示す濾過材は、本発明の他の実施
態様に係る濾過材の断面概念図であり、流体の入口側の
表面に凹凸が設けられ、さらに、濾過材の厚さ方向にお
いても密度勾配を有する場合の実施例である。この場合
の密度勾配は、被濾過流体の流れの上流側の気孔２が大
きく、下流側に行くにしたがって気孔径が小さくなるよ
うに構成されている。したがって、低密度層で大寸法粒
子のダストを捕捉し、下流に行くにしたがって小粒径の
ものを順次捕捉していくことができ、これにより良好な
ふるい分は効果が発揮される。The filter medium shown in FIGS. 2 and 3 is a cross-sectional conceptual diagram of a filter medium according to another embodiment of the present invention, in which irregularities are provided on the surface on the fluid inlet side, and the thickness of the filter medium is This is an example in which there is a density gradient also in the direction. The density gradient in this case is configured such that the pores 2 on the upstream side of the flow of the fluid to be filtered are large and the pore diameter becomes smaller toward the downstream side. Therefore, it is possible to trap large-sized particles in the low-density layer, and to successively trap small-sized particles toward the downstream, thereby achieving a good sieving effect.
さらに、第２図に示す濾過材にあっては、基材１の面方
向における低密度部分が凹部に設けられ、高密度部分が
凸部に設けられている。Furthermore, in the filter medium shown in FIG. 2, the low-density portions in the surface direction of the base material 1 are provided in the recesses, and the high-density portions are provided in the convex portions.
一方、第３図に示す濾過材にあっては、高密度部が凹部
に設けられ、低密度部が凸部に設けられている。したが
って、この場合は、濾過材の製造工程において、ローラ
ーなどの手段によって凹凸を設けることによって同時に
密濱差が形成される点で有利である。On the other hand, in the filter medium shown in FIG. 3, the high-density portion is provided in the recessed portion, and the low-density portion is provided in the convex portion. Therefore, this case is advantageous in that, in the manufacturing process of the filter medium, by providing the unevenness using means such as a roller, a density difference can be formed at the same time.
このように、濾過材の表面に凹凸を設けることによって
流れ抵抗も凹部と凸部で変化するので、これによってダ
ストの捕捉を段階的に進行させることができるという効
果がある。さらに、凹凸部の流速割合いを適宜変化させ
ることによって濾過性能を向上させる上でも有利である
。また、一般に大きな粒子は低密度部に集まり、微小粒
子は高密度部で捕捉されやすいので、第２図の様な構造
にすることは、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
性能を向上させる上で有利である。In this way, by providing the surface of the filter material with concavities and convexities, the flow resistance also changes between the concave and convex portions, which has the effect of allowing dust to be captured in stages. Furthermore, it is advantageous to improve filtration performance by appropriately changing the flow velocity ratio of the uneven portions. In addition, in general, large particles gather in low-density areas, and small particles tend to be captured in high-density areas, so creating the structure shown in Figure 2 maintains the level of the dust cake layer at a constant level, thereby making it possible to This is advantageous in improving filtration performance by maintaining a constant flow rate ratio.
起毛層を設けることによる効果ならびにチャンバー効果
については、前記と同様である。The effect of providing the raised layer and the chamber effect are the same as described above.
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１１ｉ１１１、合成１ｆｉｌｆ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 for the filter medium, natural 11i111, synthetic 1fil, and mixtures thereof, which are conventionally used as raw materials for filter paper, are used, and additives such as binders and colorants can be used as necessary.
濾過材に密度分布を設ける方法としては、たとえば、［
ｆｆ密瘍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, [
Possible methods include a method of combining and integrating filter media with different ff densities, and a method of papermaking by supplying slurries of papermaking raw materials having different properties and fiber distributions in stages during the papermaking process.
また、高密度層は、抄き合わせによって形成し得る。Also, the high-density layer can be formed by sheeting.
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、５ｉＩ
１１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, 5iI
The nap layer can be effectively formed by orienting the longitudinal direction of the paper 11 in a direction perpendicular to the paper surface.
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、さら
に端部に円板状金属プレートを接合するか、あるいは樹
脂製プレート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 the filter into a cylindrical shape with a chrysanthemum-shaped cross section, and further to form a filter structure by joining a disk-shaped metal plate to the end, or integrally molding or gluing a resin plate.
濾過ＪＬ組１１１例
本発明の濾過材Ａと従来の濾過材Ｂについて、Ｊ ｌ５
−（）１６１１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。111 examples of filtration JL group Regarding filter material A of the present invention and conventional filter material B, J l5
FIG. 4 shows the results of the filtration performance test described in -() 1611.
この際の、濾過材の有効濾過面積は１０００ｏｊであり
、流量は１０ｆＪ／分、油温は８０℃である。At this time, the effective filtration area of the filter material was 1000 oj, the flow rate was 10 fJ/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、その面方向において密度勾配を有し
ているので圧力損失の急激な増大を防止することができ
、また、流体の入口側に起毛層が設けられているのでダ
ス］−ケーキ層の形成を促進することができ、さらには
、流体出口側に高密度層が形成されているので良好なチ
ャンバー効果が発揮される。Since the filter medium of the present invention has a density gradient in its surface direction, it is possible to prevent a sudden increase in pressure loss, and since a raised layer is provided on the fluid inlet side, Formation of a cake layer can be promoted, and furthermore, since a high-density layer is formed on the fluid outlet side, a good chamber effect is exhibited.
したがって、本発明の濾過材は、これらの相乗的な作用
により、濾過性能の向上とロングライフ化の双方におい
てすぐれた効果を有している。Therefore, the filter medium of the present invention has excellent effects in both improving filtration performance and extending life due to these synergistic effects.
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・・・気孔、３・・・高密度層、４・
・・起毛。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. DESCRIPTION OF SYMBOLS 1... Base material, 2... Pore, 3... High-density layer, 4...
・Fleece brushed.
Claims (1)
在して形成され、被濾過流体の流れの上流側の濾過材表
面に起毛層が設けられるとともに、被濾過流体の流れの
下流側の濾過材表面に該上流側の表面密度よりも高い密
度を有する高密度層が形成されてなることを特徴とする
、濾過材。 ２、前記被濾過流体の流れの上流側の濾過材表面に凹凸
が設けられている、特許請求の範囲第１項に記載の濾過
材。[Claims] 1. High-density parts and low-density parts are scattered in the surface direction of the filter medium, and a raised layer is provided on the surface of the filter medium on the upstream side of the flow of the fluid to be filtered. A filtration material, characterized in that a high-density layer having a higher density than the surface density on the upstream side is formed on the surface of the filtration material on the downstream side of the flow of a fluid to be filtered. 2. The filter material according to claim 1, wherein the surface of the filter material on the upstream side of the flow of the fluid to be filtered is provided with irregularities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075885A JPS61268323A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075885A JPS61268323A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61268323A true JPS61268323A (en) | 1986-11-27 |
| JPH0446604B2 JPH0446604B2 (en) | 1992-07-30 |
Family
ID=14543814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11075885A Granted JPS61268323A (en) | 1985-05-23 | 1985-05-23 | Filter material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61268323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6880338B1 (en) * | 2020-04-06 | 2021-06-02 | 三菱電機株式会社 | How to manufacture filters, air conditioners and filters |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57119721U (en) * | 1981-01-19 | 1982-07-24 |
-
1985
- 1985-05-23 JP JP11075885A patent/JPS61268323A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57119721U (en) * | 1981-01-19 | 1982-07-24 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6880338B1 (en) * | 2020-04-06 | 2021-06-02 | 三菱電機株式会社 | How to manufacture filters, air conditioners and filters |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0446604B2 (en) | 1992-07-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |