JPH0634884B2 - Fuel filter drainage system - Google Patents
Fuel filter drainage systemInfo
- Publication number
- JPH0634884B2 JPH0634884B2 JP61236284A JP23628486A JPH0634884B2 JP H0634884 B2 JPH0634884 B2 JP H0634884B2 JP 61236284 A JP61236284 A JP 61236284A JP 23628486 A JP23628486 A JP 23628486A JP H0634884 B2 JPH0634884 B2 JP H0634884B2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- fuel
- drain
- drainage
- case
- 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 - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000000926 separation method Methods 0.000 description 18
- 230000002950 deficient Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
Landscapes
- Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、船外機用エンジン等の燃料供給系に用いて好
適な燃料フィルターの排水装置に関する。Description: TECHNICAL FIELD The present invention relates to a drainage device of a fuel filter suitable for use in a fuel supply system of an outboard engine or the like.
［従来の技術］ 従来、実開昭56-65158号公報に記載されるような燃料フ
ィルターの排水装置が提案されている。この燃料フィル
ターの排水装置は、ケースと、ケース内の上部側に設け
たフィルター部と、ケース内の下部側に設けた水分離部
と、水分離部の底部に連通する排水通路と、排水通路を
開閉する排水弁とを有している。[Prior Art] Conventionally, a drainage device for a fuel filter as described in Japanese Utility Model Publication No. 56-65158 has been proposed. This fuel filter drainage device includes a case, a filter section provided on the upper side of the case, a water separation section provided on the lower side of the case, a drain passage communicating with the bottom of the water separation section, and a drain passage. And a drain valve for opening and closing.
ここで、上記排水装置を実施する場合には、ケース内の
上部空間に連通する空気通路を設けることにより、該ケ
ース内を大気開放し、水分離部にたまった水を大気の作
用下で円滑に排水することが考えられる。Here, when implementing the above-mentioned drainage device, by providing an air passage communicating with the upper space in the case, the inside of the case is opened to the atmosphere, and the water accumulated in the water separation section is smoothly operated under the action of the atmosphere. It is possible to drain it to.
この時、空気通路が常時開放状態にあると、燃料ポンプ
の作動圧がこの空気通路から漏れてしまったり、ケース
内の燃料がこの空気通路から漏れて妥当でない。そこ
で、この空気通路には、必要に応じて開閉される開閉弁
が設けられることとなる。At this time, if the air passage is always open, the operating pressure of the fuel pump may leak from this air passage, or the fuel in the case may leak from this air passage, which is not appropriate. Therefore, an opening / closing valve that is opened / closed as needed is provided in this air passage.
［発明が解決しようとする問題点］ しかしながら、上記従来の排水装置において、空気通路
と、その空気通路の開閉弁を設ける場合には、排水のた
びに、排水弁と開閉弁の２つの弁を操作する必要があ
り、操作が煩雑である。また、排水後に開閉弁を閉め忘
れすることも考えられるが、この場合には、前述の燃料
ポンプの作動圧漏れ、燃料の漏れを招くことになる。[Problems to be Solved by the Invention] However, in the conventional drainage device described above, when an air passage and an opening / closing valve for the air passage are provided, two valves, a drain valve and an opening / closing valve, are provided for each drain. It is necessary to operate and the operation is complicated. In addition, it may be possible to forget to close the on-off valve after drainage, but in this case, the operating pressure leak of the fuel pump and the fuel leak are caused.
なお、実開昭58-116010 号には、「ケースと、ケース内
の上部側に設けたフィルター部と、ケース内の下部側に
設けた水分離部と、水分離部の底部に連通する排水通路
と、排水通路を開閉する排水弁とを有してなる燃料フィ
ルターの排水装置であって、ケース内の上部空間に連通
する空気通路を設け、排水弁は水分離部内の水位が一定
値に達したときに自動的に開かれ、排水弁の開動作に連
動して空気通路を大気開放し、排水弁の閉動作に連動し
て空気通路を閉じる手段を備えた燃料フィルターの排水
装置」が記載され、実開昭58-116009 号には、「排水通
路を開閉するとともに、空気通路をも開閉する排水弁」
が記載されている。In addition, in Japanese Utility Model Application Laid-Open No. 58-116010, "A case, a filter section provided on the upper side of the case, a water separation section provided on the lower side of the case, and a drainage communicating with the bottom section of the water separation section are described. A drainage device for a fuel filter comprising a passage and a drain valve for opening and closing the drain passage, wherein an air passage communicating with the upper space in the case is provided, and the drain valve keeps the water level in the water separation unit at a constant value. When it reaches, the fuel filter drainage device is equipped with a means that automatically opens, the air passage is opened to the atmosphere in conjunction with the opening operation of the drain valve, and the air passage is closed in conjunction with the closing operation of the drain valve. As described in Japanese Utility Model Laid-Open No. 58-116009, "Drain valve that opens and closes the drain passage and also opens and closes the air passage"
Is listed.
しかしながら、実開昭58-116010 号に記載の発明は、空
気通路を閉じる手段として、排水弁と別体の空気電磁弁
を用いるものであり、構成複雑であるため、排水制御が
複雑となる。また、各弁が弁体を直線動して開閉するも
のであるため、シール不良等の虞れがある。また、下ケ
ースに燃料入口部、出口部を設け、上ケースに空気通路
を設けているため、配管の取回しが複雑である。However, the invention described in Japanese Utility Model Application Laid-Open No. 58-116010 uses an air solenoid valve, which is separate from the drain valve, as a means for closing the air passage, and the drain control is complicated because the configuration is complicated. Further, since each valve linearly moves the valve element to open and close it, there is a risk of defective sealing. Further, since the lower case is provided with the fuel inlet and outlet and the upper case is provided with the air passage, the piping is complicated.
また、実開昭58-116009 号に記載の発明は、電磁弁が排
水用弁体と空気用弁体とを備えているが、各弁体を直線
動して開閉するものであるため、シール不良等の虞れが
ある。In the invention described in Japanese Utility Model Application Laid-Open No. 58-116009, the solenoid valve is provided with a drain valve element and an air valve element, but since each valve element is moved linearly to open and close, There is a risk of defects.
本発明は、簡素な構成により、排水操作を簡略かつ確実
化して水分離部内に溜った水を円滑に排水できるように
するとともに、シール不良等の虞れを伴うことなく、ま
た配管のコンパクトを図ることを目的とする。INDUSTRIAL APPLICABILITY The present invention simplifies and ensures the drainage operation by a simple structure to enable smooth drainage of water accumulated in the water separation unit, and without fear of a seal failure or the like, and a compact pipe. The purpose is to plan.
［課題を解決するための手段］ 本発明は、ケースと、ケースの上部に設けた蓋部と、そ
の蓋部に形成された燃料入口部と燃料出口部と、ケース
内の下部側に設けた水分離部と、水分離部の底部に連通
する排水通路と、排水通路を開閉する排水弁とを有して
なる燃料フィルターの排水装置において、上記蓋部に、
ケース内の上部空間に連通する空気通路を設け、前記排
水弁は、水平方向に軸支され、その軸部の円周方向に前
記排水通路に連通する排水孔と、大気に連通する空気孔
を貫通し、前記軸部の回動操作により、 i)排水孔を開としたとき、前記空気通路を前記空気孔に
連通させ、 ii) 排水孔を閉としたとき、前記空気通路と前記空気孔
の連通を閉じる位置に前記排水孔と空気孔を形成したも
のである。[Means for Solving the Problems] The present invention provides a case, a lid portion provided on an upper portion of the case, a fuel inlet portion and a fuel outlet portion formed on the lid portion, and a lower portion inside the case. In the drainage device of the fuel filter, which comprises a water separator, a drainage passage communicating with the bottom of the water separator, and a drainage valve opening and closing the drainage passage, in the lid portion,
An air passage communicating with the upper space in the case is provided, the drain valve is horizontally supported, and a drain hole communicating with the drain passage in the circumferential direction of the shaft portion and an air hole communicating with the atmosphere are provided. When the drain hole is opened, the air passage is communicated with the air hole when the drain hole is opened, and ii) when the drain hole is closed, the air passage and the air hole are penetrated. The drainage hole and the air hole are formed at the position where the communication is closed.
［作用］ 「排水弁に、大気と連通する空気孔と、ケース下部に
溜った水を排出する排水孔の両方を設けた」ことによ
り、ケース内の上部空間に連通する空気通路は、排水弁
の開動作に連動して大気開放し、排水弁の閉動作に連動
して閉じる。これにより、排水の前後に、排水弁と空気
通路のための開閉弁を別個に操作する必要がなくなる。
したがって、排水操作を簡略かつ確実化し、水分離部内
に溜った水を円滑に排水できる。[Operation] By providing "the drain valve with both an air hole that communicates with the atmosphere and a drain hole that discharges the water accumulated in the lower part of the case", the air passage that communicates with the upper space in the case has a drain valve. It is opened to the atmosphere in conjunction with the opening operation of, and closed in conjunction with the closing operation of the drain valve. This eliminates the need to separately operate the drain valve and the on-off valve for the air passage before and after draining.
Therefore, the drainage operation can be simplified and ensured, and the water accumulated in the water separation unit can be smoothly drained.
また、「排水弁は、水平方向に軸支され、その軸部の
円周方向に前記排水通路に連通する排水孔と、大気に連
通する空気孔を貫通し、前記軸部の回動操作により、排
水孔を開としたとき、前記空気通路を前記空気孔に連通
させ、排水孔を閉としたとき、前記空気通路と前記空気
孔の連通を閉じる位置に前記排水孔と空気孔を形成した
こと」により、空気孔を閉じる位置に排水弁を回動した
とき、排水口を確実に閉じることができる。すなわち、
軸部は孔に嵌合されており、嵌合隙間は微細でしかも全
周に渡り、隙間を通って洩れることは困難であり、シー
ル不良等の問題を起こすことはない。In addition, “the drain valve is horizontally supported, and penetrates a drain hole communicating with the drain passage and an air hole communicating with the atmosphere in a circumferential direction of the shaft portion, and a rotating operation of the shaft portion is performed. When the drain hole is opened, the air passage is communicated with the air hole, and when the drain hole is closed, the drain hole and the air hole are formed at positions where the communication between the air passage and the air hole is closed. With this, when the drain valve is rotated to the position where the air hole is closed, the drain port can be reliably closed. That is,
Since the shaft portion is fitted in the hole, the fitting gap is fine, and it is difficult to leak through the gap over the entire circumference, and problems such as defective sealing do not occur.
更に、「ケース内の上部に設けた蓋部に燃料入口部と
燃料出口部と空気通路を一体に形成した」ため、空気通
路のパイピングも同時にでき、しかもコンパクトな配管
が可能となる。Furthermore, "the fuel inlet portion, the fuel outlet portion, and the air passage are integrally formed in the lid portion provided in the upper part of the case". Therefore, piping of the air passage can be performed at the same time, and compact piping is possible.
［実施例］ 第１図は本発明が適用されてなる燃料供給系の要部配管
図、第２図は本発明が適用されてなる船外機を示す模式
図である。[Embodiment] FIG. 1 is a main part piping diagram of a fuel supply system to which the present invention is applied, and FIG. 2 is a schematic diagram showing an outboard motor to which the present invention is applied.
船外機１０は、船舶１１に取付けブラケット１２を介し
て着脱可能に取付けられ、推進ユニット１３の上部にエ
ンジンユニット１４を搭載している。１０Ａはカウリン
グである。エンジンユニット１４は、エンジン１５、気
化器１６、吸気箱１７を備えている。気化器１６は、エ
ンジン１５に設けられる吸気通路に接続され、フロート
室１８、フロート室１８内のフロート１９によって開閉
するニードル弁２０、燃料供給ノズル２１を備えてい
る。他方、船舶１１の内部には、燃料タンク２２が配置
されている。The outboard motor 10 is detachably attached to the boat 11 via a mounting bracket 12, and an engine unit 14 is mounted on an upper portion of the propulsion unit 13. 10A is a cowling. The engine unit 14 includes an engine 15, a carburetor 16, and an intake box 17. The carburetor 16 is connected to an intake passage provided in the engine 15, and includes a float chamber 18, a needle valve 20 opened and closed by a float 19 in the float chamber 18, and a fuel supply nozzle 21. On the other hand, a fuel tank 22 is arranged inside the ship 11.
上記気化器１６の燃料供給ノズル２１と燃料タンク２２
とは燃料供給通路２３によって連結されている。燃料供
給通路２３は、エンジン側通路２３Ａとタンク側通路２
３Ｂとからなり、両者はエンジン側燃料継手２４Ａとタ
ンク側燃料継手２４Ｂとによって相互に着脱可能とされ
ている。Fuel supply nozzle 21 and fuel tank 22 of the vaporizer 16
Are connected by a fuel supply passage 23. The fuel supply passage 23 includes an engine side passage 23A and a tank side passage 2
3B, both of which are detachable from each other by an engine side fuel joint 24A and a tank side fuel joint 24B.
エンジン側燃料継手２４Ａとタンク側燃料継手２４Ｂ
は、エンジン側燃料継手２４Ａに一体の突出管２５をタ
ンク側燃料継手２４Ｂの接続孔２６に装着されているＯ
リング２７の内部に挿入し、エンジン側燃料継手２４Ａ
内でばね２８に背面支持されている弁体２９に一体のロ
ッド３０と、タンク側燃料継手２４Ｂ内でばね３１に背
面支持されている弁体３２との衝合により、弁体２９を
Ｏリング３３から離隔させ、かつ弁体３２をＯリング２
７から離隔させることによって、エンジン側通路２３Ａ
とタンク側通路２３Ｂとを連通させることを可能として
いる。なお、上記連通のために、弁体２９はスリット３
４を備え、弁体３２まわりの接続孔２６はスリット３５
を備えている。また、上記エンジン側燃料継手２４Ａと
タンク側燃料継手２４Ｂの接続状態は、エンジン側燃料
継手２４Ａに一体の係合ピン３６と、タンク側燃料継手
２４Ｂに一体のレバー３７との係合によって保持可能と
されている。Engine side fuel joint 24A and tank side fuel joint 24B
Is a projection pipe 25 integral with the engine-side fuel joint 24A and is attached to the connection hole 26 of the tank-side fuel joint 24B.
Inserted inside the ring 27, engine side fuel joint 24A
The rod 30 integrated with the valve body 29 which is back-supported by the spring 28 inside, and the valve body 32 which is back-supported by the spring 31 inside the tank-side fuel joint 24B abut the valve body 29 with the O-ring. 33 and separate the valve body 32 from the O-ring 2
By separating from the engine 7, the engine side passage 23A
And the tank side passage 23B can be communicated with each other. The valve element 29 has the slit 3 for the above communication.
4, and the connection hole 26 around the valve body 32 has a slit 35.
Is equipped with. Further, the connection state between the engine side fuel joint 24A and the tank side fuel joint 24B can be held by the engagement between the engagement pin 36 integral with the engine side fuel joint 24A and the lever 37 integral with the tank side fuel joint 24B. It is said that.
船外機１０を船舶１１から取外す等によって、エンジン
側燃料継手２４Ａとタンク側燃料継手２４Ｂとの上記接
続状態を解除する時には、エンジン側燃料継手２４Ａ内
の弁体２９は、ばね２８によってＯリング３３に密着し
て閉じ、タンク側燃料継手２４Ｂ内の弁体３２は、ばね
３１によってＯリング２７に密着して閉じる。When the engine-side fuel joint 24A and the tank-side fuel joint 24B are disconnected from each other by disconnecting the outboard motor 10 from the vessel 11 or the like, the valve element 29 in the engine-side fuel joint 24A uses an O-ring by a spring 28. The valve element 32 in the fuel joint 24B on the tank side is in close contact with the O-ring 27 by the spring 31.
燃料供給通路２３のエンジン側燃料継手２４Ａより下流
側には燃料フィルター３８が介在されている。燃料フィ
ルター３８は、ケース３９（上ケース３９Ａと下ケース
３９Ｂからなる）と、ケース３９の上部に設けた蓋部３
９Ｃと、その蓋部３９Ｃに形成された燃料入口部１０１
と燃料出口部１０２と、ケース３９の内部の上部側に設
けられるフィルター部３８Ａと、ケース３９の下部側に
設けられる水分離部４０と、水分離部４０の底部に連通
する排水通路４１と排水通路４１を開閉する排水弁（手
動コック）４２とを有している。燃料フィルター３８
は、燃料中の水分を、燃料との比重差によって分離し、
水分離部４０を開いて排水通路４１から排水する。排水
通路４１に接続されるドレン管４１Ａはカウリング１０
Ａの外部にまで延設される。A fuel filter 38 is interposed downstream of the engine side fuel joint 24A in the fuel supply passage 23. The fuel filter 38 includes a case 39 (consisting of an upper case 39A and a lower case 39B) and a lid portion 3 provided on the upper part of the case 39.
9C and the fuel inlet portion 101 formed on the lid portion 39C
And a fuel outlet part 102, a filter part 38A provided on the upper side inside the case 39, a water separation part 40 provided on the lower side of the case 39, a drain passage 41 communicating with the bottom part of the water separation part 40, and drainage. It has a drain valve (manual cock) 42 that opens and closes the passage 41. Fuel filter 38
Separates the water in the fuel by the difference in specific gravity from the fuel,
The water separation unit 40 is opened and the water is drained from the drainage passage 41. The drain pipe 41A connected to the drainage passage 41 is the cowling 10
It is extended to the outside of A.
燃料供給通路２３の水分離装置３８より上流側、すなわ
ちタンク側通路２３Ｂの中間部には、手動燃料ポンプ４
３が配置されている。At the upstream side of the water separation device 38 in the fuel supply passage 23, that is, in the middle of the tank side passage 23B, the manual fuel pump 4 is provided.
3 are arranged.
また、燃料供給通路２３の水分離装置３８より下流側に
はダイアフラム式燃料ポンプ４４が配置されている。燃
料ポンプ４４は、クランク室４５に連通するダイアフラ
ム室４６と、燃料供給通路２３を介して気化器１６、燃
料タンク２２のそれぞれに連通するポンプ室４７とをダ
イアフラム４８によって区画している。ポンプ室４７の
タンク２２の側に連なる吸込口４９、気化器１６の側に
連なる吐出口５０のそれぞれには、タンク２２の側から
気化器１６の側への燃料の流れのみを許容する逆止弁５
１、５２が設けられている。A diaphragm fuel pump 44 is arranged downstream of the water separation device 38 in the fuel supply passage 23. The fuel pump 44 has a diaphragm chamber 46 that communicates with the crank chamber 45 and a pump chamber 47 that communicates with the carburetor 16 and the fuel tank 22 via the fuel supply passage 23. The suction port 49 connected to the tank 22 side of the pump chamber 47 and the discharge port 50 connected to the carburetor 16 side each have a non-return valve that allows only the flow of fuel from the tank 22 side to the carburetor 16 side. Valve 5
1, 52 are provided.
すなわち、手動燃料ポンプ４３は、手動操作により、タ
ンク２２内の燃料を燃料供給通路２３に充満可能とす
る。また、燃料ポンプ４４は、エンジン１５の運転にと
もなうクランク室４５の内部の圧力脈動によって作動
し、タンク２２の内部の燃料を気化器１６に圧送可能と
する。That is, the manual fuel pump 43 enables the fuel supply passage 23 to be filled with the fuel in the tank 22 by a manual operation. Further, the fuel pump 44 operates by pressure pulsation inside the crank chamber 45 accompanying the operation of the engine 15, and enables fuel inside the tank 22 to be pumped to the carburetor 16.
なお、船外機１０が船体１１から取外された時、上記エ
ンジン側通路２３Ａにおける弁体２９と逆止弁５１の
間、すなわち燃料フィルター３８の内部空間を含む領域
は気密に保持される。When the outboard motor 10 is removed from the hull 11, the region between the valve body 29 and the check valve 51 in the engine side passage 23A, that is, the region including the internal space of the fuel filter 38 is kept airtight.
しかして、燃料フィルター３８は、ケース３９の上部空
間に連通する空気通路５３を蓋部３９Ｃに備え、この空
気通路５３を前記排水弁４２によって開閉するようにし
ている。排水弁４２は、水平方向に軸支され、その軸部
の円周方向に前記排水通路４１に連通する排水孔４１Ａ
と、大気に連通する空気孔５３Ａを貫通し、前記軸部の
回動操作により、排水孔４１Ａを開としたとき、前記
空気通路５３を前記空気孔５３Ａに連通させ、排水孔
４１Ａを閉としたとき、前記空気通路５３と前記空気孔
５３Ａの連通を閉じる位置に前記排水孔４１Ａと空気孔
５３Ａを形成している。すなわち、空気通路５３は、排
水弁４２の開動作に連動して大気開放され、排水弁４２
の閉動作に連動して閉じられる。In the fuel filter 38, the lid 39C is provided with the air passage 53 communicating with the upper space of the case 39, and the air passage 53 is opened and closed by the drain valve 42. The drainage valve 42 is axially supported in the horizontal direction, and a drainage hole 41A communicating with the drainage passage 41 in the circumferential direction of the shaft portion.
When the drain hole 41A is opened by rotating the shaft portion through the air hole 53A communicating with the atmosphere, the air passage 53 is communicated with the air hole 53A and the drain hole 41A is closed. At this time, the drainage hole 41A and the air hole 53A are formed at the position where the communication between the air passage 53 and the air hole 53A is closed. That is, the air passage 53 is opened to the atmosphere in conjunction with the opening operation of the drain valve 42, and the drain valve 42
It is closed in conjunction with the closing operation of.
次に、上記実施例の作用について説明する。Next, the operation of the above embodiment will be described.
「排水孔４２に、大気と連通する空気孔５３Ａと、ケ
ース３９下部に溜った水を排出する排水孔４１Ａの両方
を設けた」ことにより、ケース３９内の上部空間に連通
する空気通路５３は、排水弁４２の開動作に連動して大
気開放し、排水弁４２の閉動作に連動して閉じる。これ
により、排水の前後に、排水弁４２と空気通路５３のた
めの開閉弁を別個に操作する必要がなくなる。したがっ
て、排水操作を簡略かつ確実化し、水分離部４０内に溜
った水を円滑に排水できる。By providing the drain hole 42 with both the air hole 53A communicating with the atmosphere and the drain hole 41A discharging the water accumulated in the lower portion of the case 39, the air passage 53 communicating with the upper space in the case 39 is formed. , The atmosphere is opened in association with the opening operation of the drainage valve 42, and closed in conjunction with the closing operation of the drainage valve 42. This eliminates the need to separately operate the drain valve 42 and the open / close valve for the air passage 53 before and after draining. Therefore, the drainage operation can be simplified and ensured, and the water accumulated in the water separation unit 40 can be drained smoothly.
また、「排水弁４２は、水平方向に軸支され、その軸
部の円周方向に前記排水通路４１に連通する排水孔４１
Ａと、大気に連通する空気孔５３Ａを貫通し、前記軸部
の回動操作により、排水孔４１Ａを開としたとき、前記
空気通路５３を前記空気孔５３Ａに連通させ、排水孔４
１Ａを閉としたとき、前記空気通路５３と前記空気孔５
３Ａの連通を閉じる位置に前記排水孔４１Ａと空気孔５
３Ａを形成したこと」により、空気孔５３Ａを閉じる位
置に排水弁４２を回動したとき、排水口を確実に閉じる
ことができる。すなわち、軸部は孔４１Ａ、５３Ａに嵌
合されており、嵌合隙間は微細でしかも全周に渡り、隙
間を通って洩れることは困難であり、シール不良等の問
題を起こすことはない。In addition, “the drainage valve 42 is supported in the horizontal direction, and the drainage hole 41 that communicates with the drainage passage 41 in the circumferential direction of the shaft portion.
A and the air hole 53A communicating with the atmosphere are penetrated, and when the drainage hole 41A is opened by the rotation operation of the shaft portion, the air passage 53 is communicated with the air hole 53A, and the drainage hole 4
When 1A is closed, the air passage 53 and the air hole 5
The drain hole 41A and the air hole 5 are located at positions where the communication of 3A is closed.
By forming 3A ”, the drain port can be reliably closed when the drain valve 42 is rotated to the position where the air hole 53A is closed. That is, the shaft portion is fitted in the holes 41A and 53A, the fitting gap is minute, and the whole circumference is difficult to leak through the gap, so that problems such as defective sealing do not occur.
更に、「ケース３９内の上部に設けた蓋部３９Ｃに燃
料入口部１０１と燃料出口部１０２と空気通路５３を一
体に形成した」ため、空気通路５３のパイピングも同時
にでき、しかもコンパクトな配管が可能となる。Furthermore, "the fuel inlet 101, the fuel outlet 102, and the air passage 53 are integrally formed in the lid 39C provided in the upper portion of the case 39", so that the air passage 53 can be piped at the same time, and a compact pipe can be formed. It will be possible.
第３図は本発明の他の実施例を示す断面図である。FIG. 3 is a sectional view showing another embodiment of the present invention.
この燃料フィルター６０が前記燃料フィルター３８と異
なる点は、排水弁４２を自動的に開閉するため、排水弁
４２の駆動部としてソレノイド６１を設け、水分離部４
０の内部に水位センサ６２を設けたことにある。水位セ
ンサ６２は、ケース３９に螺着されるハウジング６３
と、ハウジング６３の内部に配設されるリードスイッチ
６４と、ハウジング６３のまわりに遊装されて水位の変
化に応じて上下するとともに、水位が一定値に達した時
にリードスイッチ６４をオンする磁石付きフロート６５
とからなる。ソレノイド６１は、水位センサ６２のリー
ドスイッチ６４がオンした信号によって励磁され、例え
ば不図示のタイマ回路が計数する一定時間排水弁４２を
開状態に保ち、その後排水弁４２を閉じる。これによ
り、燃料フィルター６０は、水分離部４０の水位が一定
値に達した時、自動的に排水通路４１と空気通路５３を
開き、水分離部４０にたまった水を円滑に排水する。This fuel filter 60 is different from the fuel filter 38 in that the drain valve 42 is automatically opened and closed. Therefore, a solenoid 61 is provided as a drive unit of the drain valve 42, and the water separation unit 4 is provided.
This is because the water level sensor 62 is provided inside the 0. The water level sensor 62 is a housing 63 screwed to the case 39.
And a reed switch 64 disposed inside the housing 63, and a magnet that is loosely mounted around the housing 63 and moves up and down according to a change in water level, and turns on the reed switch 64 when the water level reaches a certain value. With float 65
Consists of. The solenoid 61 is excited by a signal that the reed switch 64 of the water level sensor 62 is turned on, and keeps the drain valve 42 open for a certain period of time counted by, for example, a timer circuit (not shown), and then closes the drain valve 42. Thus, the fuel filter 60 automatically opens the drainage passage 41 and the air passage 53 when the water level of the water separation unit 40 reaches a certain value, and smoothly drains the water accumulated in the water separation unit 40.
なお、本発明の実施においては、水位センサ６２を用い
ず、ソレノイド６１を手動によって適時オン操作するも
のであってもよい。In the embodiment of the present invention, the water level sensor 62 may not be used, and the solenoid 61 may be manually turned on at a proper time.
また、本発明の実施において、排水弁４２をケース３９
より分離独立させ、排水通路４１をゴム管等で形成した
ものでもよい。In addition, in the practice of the present invention, the drain valve 42 is installed in the case 39.
The drainage passage 41 may be made more independent and formed by a rubber tube or the like.
［発明の効果］ 本発明によれば、簡素な構成により、排水操作を簡略か
つ確実化して水分離部内に溜った水を円滑に排水できる
ようにするとともに、シール不良等の虞れを伴うことな
く、また配管のコンパクトを図ることができる。[Effects of the Invention] According to the present invention, with a simple configuration, the drainage operation can be simplified and ensured so that the water accumulated in the water separation part can be drained smoothly, and there is also the risk of defective sealing. In addition, the piping can be made compact.
第１図は本発明が適用されてなる燃料供給系の要部配管
図、第２図は本発明が適用されてなる船外機を示す模式
図、第３図は本発明の他の実施例を示す断面図である。 ３８、６０……燃料フィルター、３８Ａ……フィルター
部、３９……ケース、４０……水分離部、４１……排水
通路、４１Ａ……排水孔、４２……排水弁、５３……空
気通路、５３Ａ……空気孔、６１……ソレノイド、６２
……水位センサ。FIG. 1 is a piping diagram of a main part of a fuel supply system to which the present invention is applied, FIG. 2 is a schematic diagram showing an outboard motor to which the present invention is applied, and FIG. 3 is another embodiment of the present invention. FIG. 38, 60 ... Fuel filter, 38A ... Filter part, 39 ... Case, 40 ... Water separating part, 41 ... Drain passage, 41A ... Drain hole, 42 ... Drain valve, 53 ... Air passage, 53A ... Air hole, 61 ... Solenoid, 62
...... Water level sensor.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｍ 37/00 ３１１ Ｚ 7049−3Ｇ 37/22 Ａ 7049−3Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI Technical display location F02M 37/00 311 Z 7049-3G 37/22 A 7049-3G
Claims (1)
ーの排水装置において、 上記蓋部に、ケース内の上部空間に連通する空気通路を
設け、 前記排水弁は、水平方向に軸支され、その軸部の円周方
向に前記排水通路に連通する排水孔と、大気に連通する
空気孔を貫通し、 前記軸部の回動操作により、 i)排水孔を開としたとき、前記空気通路を前記空気孔に
連通させ、 ii) 排水孔を閉としたとき、前記空気通路と前記空気孔
の連通を閉じる位置に前記排水孔と空気孔を形成したこ
とを特徴とする燃料フィルターの排水装置。1. A case, a lid portion provided on an upper portion of the case, a fuel inlet portion and a fuel outlet portion formed on the lid portion, a water separating portion provided on a lower side in the case, and a water separating portion. A drainage device for a fuel filter, comprising a drainage passage communicating with the bottom of the drainage passage and a drainage valve for opening and closing the drainage passage, wherein the lid portion is provided with an air passage communicating with the upper space in the case, Is horizontally supported, and penetrates through a drain hole communicating with the drain passage in the circumferential direction of the shaft portion and an air hole communicating with the atmosphere. When the air passage is opened, the air passage is communicated with the air hole, and ii) when the drain hole is closed, the drain hole and the air hole are formed at positions where the communication between the air passage and the air hole is closed. A drainage device for a fuel filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61236284A JPH0634884B2 (en) | 1986-10-06 | 1986-10-06 | Fuel filter drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61236284A JPH0634884B2 (en) | 1986-10-06 | 1986-10-06 | Fuel filter drainage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391111A JPS6391111A (en) | 1988-04-21 |
| JPH0634884B2 true JPH0634884B2 (en) | 1994-05-11 |
Family
ID=16998507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61236284A Expired - Fee Related JPH0634884B2 (en) | 1986-10-06 | 1986-10-06 | Fuel filter drainage system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634884B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002224503A (en) * | 2001-02-02 | 2002-08-13 | Wako Industrial Co Ltd | Fluid-water separator |
| DE102004063015A1 (en) * | 2004-12-22 | 2006-07-13 | Mann + Hummel Gmbh | Fuel filter |
| JP4922129B2 (en) * | 2007-10-31 | 2012-04-25 | 株式会社小松製作所 | Water separator |
| GB2561530B (en) * | 2017-01-20 | 2022-01-12 | Bamford Excavators Ltd | A fuel filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58116009U (en) * | 1982-01-29 | 1983-08-08 | 株式会社 土屋製作所 | Filter drainage device |
| JPS58116010U (en) * | 1982-01-30 | 1983-08-08 | 株式会社 土屋製作所 | Automatic draining device for filters |
-
1986
- 1986-10-06 JP JP61236284A patent/JPH0634884B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6391111A (en) | 1988-04-21 |
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