JPS643781Y2 - - Google Patents
Info
- Publication number
- JPS643781Y2 JPS643781Y2 JP1982156005U JP15600582U JPS643781Y2 JP S643781 Y2 JPS643781 Y2 JP S643781Y2 JP 1982156005 U JP1982156005 U JP 1982156005U JP 15600582 U JP15600582 U JP 15600582U JP S643781 Y2 JPS643781 Y2 JP S643781Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel tank
- air
- tank
- cooling
- fan
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 22
- 239000002828 fuel tank Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案はクランク軸が垂直の所謂バーチカル型
の汎用内燃機関における強制空冷のための導風装
置に関するものである。[Detailed Description of the Invention] The present invention relates to an air guide device for forced air cooling in a so-called vertical type general-purpose internal combustion engine in which the crankshaft is vertical.
この種の内燃機関は、クランク軸１で回転する
フライホイール２と一体のフアン３、そのフアン
３を含めて機関の上部を覆う導風カバー４を備
え、フアン３によつてカバー４内に導入した冷却
風を、カバー４に案内させてシリンダブロツク５
を吹付けるようにしている。 This type of internal combustion engine is equipped with a flywheel 2 that rotates on a crankshaft 1, a fan 3 that is integrated with it, and a guide cover 4 that covers the top of the engine including the fan 3. Air is introduced into the cover 4 by the fan 3. The cooled air is guided through the cover 4 to the cylinder block 5.
I try to spray it on.
上記導風カバー４は導入された風をシリンダブ
ロツク５に無駄なく送るように、シリンダブロツ
ク５と反対側の側面を、第２図鎖線示４Ａのよう
にフライホイール２・フアン３の略半周に沿つた
円弧面にする必要がある。 In order to send the introduced wind to the cylinder block 5 without waste, the air guide cover 4 has its side opposite to the cylinder block 5 approximately halfway around the flywheel 2 and fan 3 as shown by the chain line 4A in FIG. It is necessary to make it a circular arc surface along the line.
又上記バーチカル型汎用内燃機関は重量バラン
スを保つため、燃料タンク６をシリンダブロツク
５と反対側に配置する必要があるけれども、その
タンク６が露出していては外観体裁が悪いので、
一般に、タンク６を導風カバー４の内側に配置し
ている。 In addition, in order to maintain weight balance in the vertical type general-purpose internal combustion engine, it is necessary to place the fuel tank 6 on the opposite side from the cylinder block 5, but if the tank 6 is exposed, the appearance will be unsightly.
Generally, the tank 6 is arranged inside the air guide cover 4.
ところがタンク形状が単なる直方体或は水筒形
などであるため、フライホイール２・フアン３と
タンク６との間に、前記鎖線示４Ａの線に沿つて
円弧状隔壁を設けている。その円弧状隔壁は導風
カバー４と一体成形、或は別物を取付けるので、
何れの場合もカバーの構造が複雑で製作を困難に
している。 However, since the tank shape is a simple rectangular parallelepiped or water bottle shape, an arcuate partition wall is provided between the flywheel 2/fan 3 and the tank 6 along the chain line 4A. The arc-shaped bulkhead is integrally molded with the wind guide cover 4, or a separate piece is attached.
In either case, the structure of the cover is complicated and difficult to manufacture.
本考案は従来のバーチカル型汎用内燃機関の強
制空冷用導風装置が持つている上記の問題点を解
決することを目的とするもので、導風カバー４の
内側で、クランクケース７を中央にしてシリンダ
ブロツク５と反対側に燃料タンク６を配置し、フ
ライホイール２・フアン３の周面に対向している
燃料タンク６の側面６Ａを、フライホイール２・
フアン３の周面に沿つた凹弧面に形成して冷却風
の旋回案内面とすると共に、その燃料タンク６の
冷却風旋回案内面６Ａの下部を、フライホイール
２・冷却フアン３の下側に出つ張らせて段部６Ｂ
を形成したことを要旨とする。 The purpose of this invention is to solve the above-mentioned problems of the conventional forced air cooling air guide device for vertical general-purpose internal combustion engines. The fuel tank 6 is arranged on the opposite side of the cylinder block 5, and the side surface 6A of the fuel tank 6 facing the circumferential surfaces of the flywheel 2 and the fan 3 is connected to the flywheel 2 and the fan 3.
It is formed into a concave arc surface along the circumferential surface of the fan 3 to serve as a cooling air swirling guide surface, and the lower part of the cooling air swirling guide surface 6A of the fuel tank 6 is connected to the lower side of the flywheel 2 and the cooling fan 3. The step part 6B protrudes from the
The main point is that it has been formed.
燃料タンク６はブラケツト・ステーなどを介し
てクランクケース７に取付けられる。 The fuel tank 6 is attached to the crankcase 7 via a bracket stay or the like.
機関を作動させると、フアン３の回転で口８か
らカバー４内に導入された風はタンクの凹弧面６
Ａ、すなわち冷却風旋回案内面に案内されて回
り、クランクケース７の周面に沿つて下向きに流
れようとする冷却風は、タンク６の凹弧面６Ａの
下部の段部６Ｂに遮られ、導入された冷却風の大
部分がカバー４の内側面に沿いながらシリンダブ
ロツク５に向つて流れる。 When the engine is operated, the air introduced into the cover 4 from the opening 8 by the rotation of the fan 3 flows through the concave arc surface 6 of the tank.
A, that is, the cooling air that is guided by the cooling air rotation guide surface and tries to flow downward along the circumferential surface of the crankcase 7 is blocked by the step 6B at the bottom of the concave arc surface 6A of the tank 6. Most of the introduced cooling air flows toward the cylinder block 5 along the inner surface of the cover 4.
本考案導風装置は上記のように、導風カバー４
の内側に配置した燃料タンク６の冷却フアンの周
面に対向している側面６Ａを冷却風の旋回案内面
に利用したから、冷却風がタンク６と反対側にあ
るシリンダブロツク５に向つて良く流れ、燃料タ
ンク６は導風カバー４に覆われて外観体裁が良い
と共に、そのカバー４の内側に冷却風案内用の隔
壁を設ける必要がなくてカバー４の形状構造が簡
単になる。又燃料タンク６はシリンダブロツク５
の熱の影響を受けることがなく、タンク６に直接
冷却風が当るので、タンク内の燃料の温度上昇を
抑制する効果もある。 As mentioned above, the air guide device of the present invention has the air guide cover 4.
Since the side surface 6A facing the circumferential surface of the cooling fan of the fuel tank 6 disposed inside the fuel tank 6 is used as a turning guide surface for the cooling air, the cooling air can be directed toward the cylinder block 5 on the opposite side from the tank 6. The fuel tank 6 is covered with the air guide cover 4 and has a good appearance, and there is no need to provide a partition wall for guiding cooling air inside the cover 4, so that the shape and structure of the cover 4 is simplified. Also, the fuel tank 6 is connected to the cylinder block 5.
Since the cooling air directly hits the tank 6 without being affected by the heat of the tank, it also has the effect of suppressing the temperature rise of the fuel in the tank.
本考案導風案内装置は更に燃料タンク６の冷却
風旋回案内面６Ａの下部を、フライホイール２・
冷却フアン３の下側に出つ張らせて段部６Ｂを形
成したから、冷却風が直接クランクケース７の周
面に沿つて下方に逃げるのを防ぐことができて、
冷却風が無駄なくシリンダブロツク６の方へ送ら
れる効果がある。 The air guiding device of the present invention further connects the lower part of the cooling air swirling guide surface 6A of the fuel tank 6 with the flywheel 2.
Since the stepped portion 6B is formed so as to protrude from the lower side of the cooling fan 3, it is possible to prevent the cooling air from directly escaping downward along the circumferential surface of the crankcase 7.
There is an effect that the cooling air is sent toward the cylinder block 6 without wasting it.
第１図は本考案導風装置を備えたバーチカル型
汎用内燃機関の一部縦断側面図、第２図はその一
部横断平面図。
１はクランク軸、２はフライホイール、３はフ
アン、４は導風カバー、５はシリンダブロツク、
６は燃料タンク、７はクランクケース、６Ａはタ
ンクの凹弧状側面、６Ｂはタンクの段部。
FIG. 1 is a partially longitudinal side view of a vertical general-purpose internal combustion engine equipped with the air guide device of the present invention, and FIG. 2 is a partially transverse plan view thereof. 1 is the crankshaft, 2 is the flywheel, 3 is the fan, 4 is the air guide cover, 5 is the cylinder block,
6 is a fuel tank, 7 is a crankcase, 6A is a concave arc-shaped side surface of the tank, and 6B is a stepped portion of the tank.
Claims (1)
してシリンダブロツクと反対側に燃料タンクを配
置し、冷却フアンの周面に対向している燃料タン
クの側面を、その冷却フアンの周面に沿つた凹弧
面に形成して冷却風の旋回案内面とすると共に、
その燃料タンクの冷却風旋回案内面の下部を、フ
ライホイール・冷却フアンの下側に出つ張らせて
段部を形成したバーチカル型汎用内燃機関の導風
装置。 Inside the air guide cover, place the fuel tank on the opposite side of the cylinder block with the crankcase in the center, and place the side of the fuel tank that faces the circumferential surface of the cooling fan along the circumferential surface of the cooling fan. It is formed into a concave arc surface to serve as a turning guide surface for cooling air, and
This is an air guide device for a vertical general-purpose internal combustion engine in which the lower part of the cooling air swirling guide surface of the fuel tank protrudes below the flywheel/cooling fan to form a step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15600582U JPS5960344U (en) | 1982-10-15 | 1982-10-15 | Air guide device for vertical general-purpose internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15600582U JPS5960344U (en) | 1982-10-15 | 1982-10-15 | Air guide device for vertical general-purpose internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5960344U JPS5960344U (en) | 1984-04-20 |
| JPS643781Y2 true JPS643781Y2 (en) | 1989-02-01 |
Family
ID=30344367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15600582U Granted JPS5960344U (en) | 1982-10-15 | 1982-10-15 | Air guide device for vertical general-purpose internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5960344U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437716B2 (en) * | 1975-05-09 | 1979-11-16 | ||
| JPS5851018B2 (en) * | 1982-02-26 | 1983-11-14 | 日立化成工業株式会社 | Expandable styrenic resin composition |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437716U (en) * | 1977-08-19 | 1979-03-12 | ||
| JPS56146503U (en) * | 1980-04-04 | 1981-11-05 | ||
| JPS5851018U (en) * | 1981-10-05 | 1983-04-06 | 株式会社クボタ | Forced air-cooled vertical shaft engine cooling system |
-
1982
- 1982-10-15 JP JP15600582U patent/JPS5960344U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437716B2 (en) * | 1975-05-09 | 1979-11-16 | ||
| JPS5851018B2 (en) * | 1982-02-26 | 1983-11-14 | 日立化成工業株式会社 | Expandable styrenic resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5960344U (en) | 1984-04-20 |
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