JP4150640B2 - Fuel filter - Google Patents

Fuel filter Download PDF

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Publication number
JP4150640B2
JP4150640B2 JP2003190228A JP2003190228A JP4150640B2 JP 4150640 B2 JP4150640 B2 JP 4150640B2 JP 2003190228 A JP2003190228 A JP 2003190228A JP 2003190228 A JP2003190228 A JP 2003190228A JP 4150640 B2 JP4150640 B2 JP 4150640B2
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Japan
Prior art keywords
case
filter
fuel
filter element
outer periphery
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Expired - Fee Related
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JP2003190228A
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JP2005023842A (en
Inventor
龍司 桑原
幸三 宮澤
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Tokyo Roki Co Ltd
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Tokyo Roki Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/003—Filters in combination with devices for the removal of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/902—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/31—Other construction details
    • B01D2201/313—Means for protecting the filter from the incoming fluid, e.g. shields

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、燃料フィルタに関し、特に水分分離機能を向上できるようにした構造に関する。
【０００２】
【従来の技術】
燃料フィルタは、入口ポートを側部に設け出口ポートを下部に設けた密閉ケース内に、外周を前記入口ポート側に対向させ、内側を前記出口ポートに連通させたフィルタエレメントを収装したものであり、入口ポートからケース内に流入した燃料はフィルタエレメントの外部から内側を通過し、この通過過程で燃料中に含まれる微細ゴミを濾過する。
【０００３】
燃料中には、このようなゴミだけではなく、水分が混在している場合が多く、水分の混在により機関系に悪影響を与える。ところが、一般にこの種の水分は比重差により燃料タンクの底部に沈降しており、また燃料供給系にトラップなどを設けることで水分除去を行っている（例えば、特許文献１，２を参照）。
【０００４】
【特許文献１】
米国特許第４２９８４６５号明細書
【０００５】
【特許文献２】
実公昭５５−４１２８４号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、何らかの影響で燃料中に混在する水が小粒子化した場合には、この水分粒子が燃料とともに運ばれ、直接フィルタエレメントに接触して負圧により二次側に吸収されてしまい、水分離性能が低下していた。特に高流量の場合にはこのような傾向は顕著となっていた。
【０００７】
ところで、本出願人は、燃料中の水分粒子は流動中に何らかの障害物に衝突することにより、運動エネルギーが失われ、粒子同士が結合して大粒化し、燃料からは分離されやすくなることを見いだした。
【０００８】
本発明は係る知見に基づきなされたもので、入口ポートから導入された燃料を迂回させた状態でフィルタエレメントに通過させることで、燃料フィルタ内部での水分分離機能を向上できるようにした燃料フィルタを提供するものである。
【０００９】
【課題を解決するための手段】
前記目的を達成するため、本発明は、入口ポートを側部に設け、かつ出口ポートを下部に設けた密閉ケース内に、外周を前記入口ポート側に対向させ、内側を前記出口ポートに連通させたフィルタエレメントを収装した燃料フィルタにおいて、前記フィルタエレメントの上部外周を覆うとともに、前記入口ポートの下側にあって、ケースを上下に液密に区画するプロテクタケースを設け、前記入口ポートからケース内に流入する燃料が、前記プロテクタケースの頂部の内周側に形成された複数のスリットを通じて前記フィルタエレメントの上端面内周側から外周側に流動した後、前記フィルタエレメントを通過してその内側に流動するようにしたことを特徴とする。
【００１０】
従って、本発明では、ケース内に流入した燃料は、プロテクタケースの外周から頂部の内周側を通り、スリットを通じてフィルタエレメントの上端面内周側から外周側に迂回状態に流動されるため、プロテクタケースそのものが障害となり、水粒子を肥大化させ、大きな水粒子となることで、油水分離されてケース底部側に沈降し、フィルタケース内での水分分離を促進する。
【００１１】
また、本発明では、請求項１において、前記プロテクタケースの外周に複数のリブを突設したことにより、流通障害となって水分粒子の肥大化を行う。
【００１２】
さらに、本発明では、請求項１または２において、前記プロテクタケースの頂部にはその中心から放射状の邪魔板を設けたことにより、前記と同様の効果により水分粒子の肥大化を促進する。
さらにまた、本発明では、請求項１〜３において、前記フィルタエレメントに設けられた上部エンドプレートの周縁に突起部を全周にわたって形成したことによっても水分粒子の肥大化と分離を可能にすることができる。
【００１３】
またさらに、本発明では、請求項１〜４において、前記フィルタエレメントのエレメントが、濾材を断面菊花形に折込んで構成されたエレメント本体と、エレメント本体の外周を周回状に被覆した不織布などの濾材からなることにより、濾材表面に捕捉された水分粒子が増すことで、粒子を肥大化させ、濾材表面より剥離沈降させることができる。
【００１４】
【発明の実施の形態】
以下、本発明の好ましい実施の形態につき、添付図面を参照して詳細に説明する。図１は本発明に係る燃料フィルタを示す断面図、図２は同一部切欠の斜視図、図３は内部部品構成を示す分解斜視図である。
【００１５】
図において、燃料フィルタ１は、一側部上部側に入口ポート２（図２を参照）、底部に出口ポート３を形成した有底円筒形のフィルタケース４と、ケース４の上面開口にガスケット４ａを介して装着され、ケース４を液密に閉鎖する蓋５と、ケース４の底部中心に立設され、かつその内筒部の下端を出口ポート３に連通させた多孔円筒形のインサートパイプ６と、インサートパイプ６の外周に同軸上に装着されるフィルタエレメント７と、フィルタエレメント７の上部に同軸に取り付けられて、フィルタエレメント７の上半部を覆うプロテクタケース８と、前記蓋５の中心を貫通し、前記インサートパイプ６の上部に形成された取付孔６ａ（図３を参照）にねじ込まれて蓋５を閉蓋状態に保持するフランジ付きネジ９と、ネジ９の外周にあって、前記蓋５とプロテクタケース８との間に介在され、プロテクタケース８、フィルタエレメント７およびインサートパイプ６周りに固定する圧縮コイルバネ１０とから概略構成されている。
【００１６】
前記入口ポート２は、特に図２に示すように、ケース４の側面上部に開口されており、逆止弁１１およびこれとＬ字形の交差角をなす油路２ａを通じてケース４内の接線方向に連通しており、これによってケース４の内部に導入された燃料は旋回流を生ずるようになっている。
【００１７】
前記プロテクタケース８は、前記ケース４内に流入した燃料が直接フィルタエレメント７に供給されることを防止するもので、円筒缶を伏せたような形状をなし、その内側上部には前記フィルタエレメント７に対する係合突起８ａを突設するとともに、下部周囲にはケース４の内径とほぼ一致するフランジ１２が形成され、このフランジ１２の溝内にガスケット１２ａを嵌合した状態でケース４内に装着することで、ケース４内を入口ポート２側に連通する上半部空間と内底部側空間とに液密に区画する。
【００１８】
プロテクタケース８の上部中心には、取付孔１４が開口され、その周囲には短筒形のバネ受け１５が一体に立設されている。そして、前記組み立て状態でバネ１０の下端はバネ座１６を介してバネ受け１５内に配置され、プロテクタケース８およびフィルタエレメント７を押し付け固定するようになっている。
【００１９】
バネ受け１５の周縁において、プロテクタケース８の頂部には内周側、外周側および両者の間にして同心状に多数のスリット１７が開口され、前記フィルタエレメント７の頂部側に連通させている。したがって、ケース４内に導入された燃料は、各スリット１７を通じてフィルタエレメント７の上部−側面−内側の順に導入されるものとなる。同図では、スリット１７がプロテクタケース８の頂部に同心状に多数形成されているが、本発明においては内周側に形成されるスリットを備えることが必須であり、また、スリット１７は内周側にのみ形成されるものであってもよい。
【００２０】
また、バネ受け１５の外側部とプロテクタケース８の頂面との間には断面三角形状をなした複数の邪魔板１８が一体化されているとともに、各邪魔板１８の端縁に連続してプロテクタケース８の外側部には縦方向に複数のリブ１９が突設されている。
【００２１】
前記フィルタエレメント７は、前記インサートパイプ６の外周に挿通される多孔円筒管からなる内筒２０と、内筒２０の外周に嵌合され、かつ濾材を断面菊花状に折り込んで構成されたエレメント本体２１と、内筒２０の上下に嵌合され、エレメント本体２１の上下開口を閉止する上部エンドプレート２２および下部エンドプレート２３のほかに、エレメント本体２１の外周に周回状に取り付けた不織布からなる濾材２４とを備え、前記インサートパイプ６に上下一対のガスケット２５を介して液密に装着されている。
【００２２】
また前記上部エンドプレート２２の周縁にはこれより一段高い突起部２２ａがその全周にわたって形成されている。
この突起部２２ａおよび前記プロテクタケース８のスリット１７、邪魔板１８およびリブ１９からなる各突起形状は、燃料中に混在する水の小粒の進行に対する障害となるもので、図１の矢印に示すように、油路２ａを通じてケース４の内部に侵入した燃料は、プロテクタケース８の外周に沿って旋回流を生じながらその頂部に向かう。このときの流動方向に対する第１の障害物はリブ１９であり、この部分に水の小粒が衝突することにより、運動エネルギーが失われ、燃料中に混在する水粒子が分離しやすく、分離した水粒子同士は相互の親和性により集合する。
【００２３】
さらには邪魔板１８に衝突することでも同様の現象が生じ、ついでスリット１７の通過時および上部エンドプレート２２の突起部２２ａを乗り越える際にも同一現象により肥大化し、とりわけ、プロテクタケース８の頂部の内周側のみにスリット１７を形成した場合には特に、スリットを通じてフィルタエレメント７の上端面内周側から外周側に大きく迂回するように流動し、燃料との比重差により、水滴となってケース４の内底部に玉状に凝縮しつつ溜まることになる。
【００２４】
また、以上の障害物によっても分離されない細粒の水はフィルタエレメント７の最外周に配置された濾材２４によって捕捉され、この状態が連続することで順次肥大化し、最終的には濾材２４から分離沈降してケース４の内底部に凝縮しつつ溜まる。
【００２５】
なお、ケース４の下部にはドレーン抜きパイプ２６（図１参照）が設けられており、パイプ２６を介してドレーン水を除去することができる。
【００２６】
【発明の効果】
以上の説明により明らかなように、本発明による燃料フィルタによれば、燃料フィルタ内部での水分分離機能を向上できる。
【図面の簡単な説明】
【図１】本発明に係る燃料フィルタの断面図である。
【図２】同一部切欠の斜視図である。
【図３】ケース内に収装される各部品の分解斜視図である。
【符号の説明】
１ 燃料フィルタ
２ 入口ポート
３ 出口ポート
４ ケース
５ 蓋
７ フィルタエレメント
８ プロテクタケース
１７ スリット
１８ 邪魔板
１９ リブ
２１ エレメント本体
２２ 上部エンドプレート
２２ａ 突起部
２４ 濾材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuel filter, and more particularly to a structure that can improve a water separation function.
[0002]
[Prior art]
The fuel filter is a sealed case in which an inlet port is provided at a side portion and an outlet port is provided at a lower portion, and a filter element having an outer periphery facing the inlet port side and an inner side communicating with the outlet port. Yes, the fuel that has flowed into the case from the inlet port passes from the outside to the inside of the filter element, and the fine dust contained in the fuel is filtered in this passing process.
[0003]
The fuel often contains not only such trash but also moisture, which adversely affects the engine system. However, this type of water generally settles at the bottom of the fuel tank due to the difference in specific gravity, and moisture is removed by providing a trap or the like in the fuel supply system (see, for example, Patent Documents 1 and 2).
[0004]
[Patent Document 1]
US Pat. No. 4,298,465 Specification
[Patent Document 2]
Japanese Utility Model Publication No. 55-41284 [0006]
[Problems to be solved by the invention]
However, if the water mixed in the fuel is reduced in size by some influence, the water particles are transported with the fuel and directly contact the filter element and absorbed by the secondary side due to the negative pressure. The performance was degraded. In particular, such a tendency was remarkable when the flow rate was high.
[0007]
By the way, the present applicant has found that the moisture particles in the fuel collide with some obstacles during the flow, so that the kinetic energy is lost, the particles are combined and become large particles, and are easily separated from the fuel. It was.
[0008]
The present invention has been made on the basis of such knowledge, and a fuel filter that can improve the water separation function inside the fuel filter by allowing the fuel introduced from the inlet port to pass through the filter element in a diverted state. It is to provide.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a sealed case in which an inlet port is provided at a side portion and an outlet port is provided at a lower portion, an outer periphery is opposed to the inlet port side, and an inner side is communicated with the outlet port. In the fuel filter in which the filter element is housed, a protector case is provided which covers the upper outer periphery of the filter element and which is below the inlet port and partitions the case in a liquid-tight manner up and down. The fuel that flows into the inside flows through the plurality of slits formed on the inner peripheral side of the top portion of the protector case from the inner peripheral side to the outer peripheral side of the upper end surface of the filter element, and then passes through the filter element to the inside It is characterized by being able to flow into
[0010]
Therefore, in the present invention, the fuel that has flowed into the case flows from the outer periphery of the protector case to the inner peripheral side of the top portion and flows through the slit from the inner peripheral side to the outer peripheral side of the upper end surface of the filter element. The case itself becomes an obstacle, and the water particles are enlarged and become large water particles, so that the oil and water are separated and settled on the bottom side of the case to promote moisture separation in the filter case.
[0011]
Further, in the present invention, in claim 1, by providing a plurality of ribs on the outer periphery of the protector case, it becomes a distribution obstacle and enlarges the moisture particles.
[0012]
Further, according to the present invention, in the first or second aspect of the present invention, the top of the protector case is provided with a radial baffle from the center thereof, thereby promoting the enlargement of moisture particles by the same effect as described above.
Furthermore, in the present invention, in Claims 1 to 3, it is possible to enlarge and separate moisture particles by forming protrusions around the entire periphery of the upper end plate provided in the filter element. Can do.
[0013]
Still further, in the present invention, the filter element according to any one of claims 1 to 4, wherein the element of the filter element is formed by folding the filter medium into a cross-shaped chrysanthemum shape, and a filter medium such as a non-woven fabric covering the outer periphery of the element body in a circular shape. As a result, the water particles trapped on the surface of the filter medium increase, whereby the particles can be enlarged and peeled and settled from the surface of the filter medium.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing a fuel filter according to the present invention, FIG. 2 is a perspective view of the same part cutout, and FIG. 3 is an exploded perspective view showing an internal component configuration.
[0015]
In the figure, a fuel filter 1 includes a bottomed cylindrical filter case 4 in which an inlet port 2 (see FIG. 2) is formed on the upper side of one side, and an outlet port 3 is formed on the bottom. And a lid 5 that closes the case 4 in a liquid-tight manner, and a porous cylindrical insert pipe 6 that is erected at the center of the bottom of the case 4 and that communicates with the outlet port 3 at the lower end of the inner cylinder. A filter element 7 that is coaxially mounted on the outer periphery of the insert pipe 6, a protector case 8 that is coaxially attached to the top of the filter element 7 and covers the upper half of the filter element 7, and the center of the lid 5 And a flanged screw 9 that is screwed into a mounting hole 6a (see FIG. 3) formed in the upper portion of the insert pipe 6 to hold the lid 5 in a closed state, and an outer periphery of the screw 9. The interposed between the lid 5 and the protector case 8, the protector case 8 is a schematic configuration from the filter element 7 and the compression coil spring 10 for secured around the insert pipe 6.
[0016]
As shown in FIG. 2, the inlet port 2 is opened at the upper part of the side surface of the case 4 and extends in the tangential direction in the case 4 through the check valve 11 and an oil passage 2a that forms an L-shaped intersection with the check valve 11. Thus, the fuel introduced into the case 4 causes a swirl flow.
[0017]
The protector case 8 prevents the fuel that has flowed into the case 4 from being supplied directly to the filter element 7 and has a shape like a cylindrical can that is turned down. And a flange 12 that substantially coincides with the inner diameter of the case 4 is formed around the lower portion. The gasket 12a is fitted in the groove of the flange 12 and is mounted in the case 4. Thus, the inside of the case 4 is liquid-tightly divided into an upper half space communicating with the inlet port 2 side and an inner bottom space.
[0018]
A mounting hole 14 is opened at the upper center of the protector case 8, and a short cylindrical spring receiver 15 is erected integrally around the mounting hole 14. And the lower end of the spring 10 is arrange | positioned in the spring receiver 15 via the spring seat 16 in the said assembly state, and the protector case 8 and the filter element 7 are pressed and fixed.
[0019]
At the periphery of the spring receiver 15, a number of slits 17 are concentrically opened at the top of the protector case 8 on the inner peripheral side, the outer peripheral side, and both, and communicate with the top side of the filter element 7. Therefore, the fuel introduced into the case 4 is introduced through the slits 17 in the order of the upper part-side face-inner side of the filter element 7. In the figure, many slits 17 are formed concentrically at the top of the protector case 8, but in the present invention, it is essential to have slits formed on the inner periphery side. It may be formed only on the side.
[0020]
In addition, a plurality of baffle plates 18 having a triangular cross section are integrated between the outer portion of the spring receiver 15 and the top surface of the protector case 8, and continuous to the edge of each baffle plate 18. A plurality of ribs 19 project from the outside of the protector case 8 in the vertical direction.
[0021]
The filter element 7 includes an inner cylinder 20 formed of a porous cylindrical tube inserted through the outer periphery of the insert pipe 6, and an element body that is fitted to the outer periphery of the inner cylinder 20 and that the filter medium is folded into a cross-shaped chrysanthemum shape. 21 and the upper end plate 22 and the lower end plate 23 fitted to the upper and lower sides of the inner cylinder 20 and closing the upper and lower openings of the element body 21, and a filter medium made of a non-woven fabric attached to the outer periphery of the element body 21 24, and is liquid-tightly attached to the insert pipe 6 via a pair of upper and lower gaskets 25.
[0022]
In addition, a protrusion 22 a that is one step higher than the upper end plate 22 is formed on the entire periphery of the upper end plate 22.
The protrusions 22a and the slits 17, the baffle plates 18 and the ribs 19 of the protector case 8 are obstacles to the progress of small water particles mixed in the fuel, as shown by the arrows in FIG. In addition, the fuel that has entered the case 4 through the oil passage 2 a travels along the outer periphery of the protector case 8 toward the top while generating a swirling flow. The first obstacle with respect to the flow direction at this time is the rib 19, and when small particles of water collide with this portion, the kinetic energy is lost, and the water particles mixed in the fuel are easily separated. Particles are assembled by mutual affinity.
[0023]
Further, a similar phenomenon occurs when the collision with the baffle plate 18 occurs, and then the same phenomenon occurs when the slit 17 passes and the projection 22a of the upper end plate 22 is overcome, and in particular, at the top of the protector case 8 In particular, when the slit 17 is formed only on the inner peripheral side, the fluid flows so as to largely detour from the inner peripheral side to the outer peripheral side of the upper end surface of the filter element 7 through the slit, resulting in water droplets due to the difference in specific gravity with the fuel. It accumulates in the inner bottom part of 4 while condensing into a ball shape.
[0024]
Further, fine water that is not separated by the above obstacles is captured by the filter medium 24 arranged on the outermost periphery of the filter element 7, and this state continues to enlarge, and finally separated from the filter medium 24. It settles and accumulates in the inner bottom of the case 4 while condensing.
[0025]
A drain removal pipe 26 (see FIG. 1) is provided at the bottom of the case 4, and drain water can be removed via the pipe 26.
[0026]
【The invention's effect】
As is clear from the above description, according to the fuel filter of the present invention, the water separation function inside the fuel filter can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a fuel filter according to the present invention.
FIG. 2 is a perspective view of the same part cutout.
FIG. 3 is an exploded perspective view of each component housed in a case.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fuel filter 2 Inlet port 3 Outlet port 4 Case 5 Cover 7 Filter element 8 Protector case 17 Slit 18 Baffle plate 19 Rib 21 Element main body 22 Upper end plate 22a Protrusion part 24 Filter material

Claims (5)

入口ポートを側部に設け、かつ出口ポートを下部に設けた密閉ケース内に、外周を前記入口ポート側に対向させ、内側を前記出口ポートに連通させたフィルタエレメントを収装した燃料フィルタにおいて、
前記フィルタエレメントの上部外周を覆うとともに、前記入口ポートの下側にあって、ケースを上下に液密に区画するプロテクタケースを設け、
前記入口ポートからケース内に流入する燃料が、前記プロテクタケースの頂部の内周側に形成された複数のスリットを通じて前記フィルタエレメントの上端面内周側から外周側に流動した後、前記フィルタエレメントを通過してその内側に流動するようにしたことを特徴とする燃料フィルタ。In a fuel filter in which a filter element in which an outer periphery is opposed to the inlet port side and an inner side communicates with the outlet port is housed in a sealed case in which an inlet port is provided at a side and an outlet port is provided at a lower portion.
Covering the upper outer periphery of the filter element, provided on the lower side of the inlet port, provided a protector case that partitions the case in a liquid-tight manner up and down,
After the fuel flowing into the case from the inlet port flows from the inner peripheral side of the upper end surface of the filter element to the outer peripheral side through a plurality of slits formed on the inner peripheral side of the top of the protector case, the filter element is A fuel filter characterized by passing through and flowing inside thereof. 請求項１において、前記プロテクタケースの外周に複数のリブを突設したことを特徴とする燃料フィルタ。2. The fuel filter according to claim 1, wherein a plurality of ribs project from the outer periphery of the protector case. 請求項１または２において、前記プロテクタケースの頂部にはその中心から放射状の邪魔板を設けたことを特徴とする燃料フィルタ。3. The fuel filter according to claim 1, wherein a radial baffle plate is provided from the center of the top of the protector case. 請求項１〜３において、前記フィルタエレメントに設けられた上部エンドプレートの周縁に突起部を全周にわたって形成したことを特徴とする燃料フィルタ。4. The fuel filter according to claim 1, wherein a protrusion is formed on the periphery of the upper end plate provided on the filter element over the entire circumference. 請求項１〜４において、前記フィルタエレメントのエレメントが、濾材を断面菊花形に折込んで構成されたエレメント本体と、エレメント本体の外周を周回状に被覆した不織布などの濾材からなることを特徴とする燃料フィルタ。5. The filter element according to claim 1, wherein the element of the filter element is composed of an element main body configured by folding the filter medium into a cross-shaped chrysanthemum shape, and a filter medium such as a non-woven fabric covering the outer periphery of the element main body in a circular shape. Fuel filter.
JP2003190228A 2003-07-02 2003-07-02 Fuel filter Expired - Fee Related JP4150640B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022013079A1 (en) * 2020-07-17 2022-01-20 Dover Fueling Solutions Uk Limited Filter device for a fuel dispensing system

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US7834072B2 (en) 2007-06-07 2010-11-16 Xerox Corporation Non-aqueous compositions containing nanosized particles of monoazo laked pigment
JP6410441B2 (en) * 2014-03-11 2018-10-24 和興フィルタテクノロジー株式会社 Fuel filter device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022013079A1 (en) * 2020-07-17 2022-01-20 Dover Fueling Solutions Uk Limited Filter device for a fuel dispensing system

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