JPS60156240A - Cooler for generator of engine - Google Patents

Cooler for generator of engine

Info

Publication number
JPS60156240A
JPS60156240A JP1149184A JP1149184A JPS60156240A JP S60156240 A JPS60156240 A JP S60156240A JP 1149184 A JP1149184 A JP 1149184A JP 1149184 A JP1149184 A JP 1149184A JP S60156240 A JPS60156240 A JP S60156240A
Authority
JP
Japan
Prior art keywords
air
crankshaft
stator
rotor
generator
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.)
Pending
Application number
JP1149184A
Other languages
Japanese (ja)
Inventor
Mamoru Atsumi
厚海 守
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP1149184A priority Critical patent/JPS60156240A/en
Publication of JPS60156240A publication Critical patent/JPS60156240A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H02K21/222Flywheel magnetos
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/10Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing

Abstract

PURPOSE:To entirely and effectively cool the interior of a generator by installing wind forming blades on a crankshaft and allowing the air blowing blades to feed air toward the surface of the crankshaft in a stator. CONSTITUTION:Air A is sucked from a cylindrical vent hole 14a by the rotation of air blowing blades 18 upon rotation of a crankshaft 2, and the air A is fed to the gap between a stator 7 and the boss 9a of a rotary member 9. Part of the air A passes between a magnet 10 and a core 12, and other part passes the vent hole 9b of the rotary member, and circulates to the hole 14a. In this case, the radially outward movement of the air A in the rotor 6 is performed by the pressure force of the blades 18 and the centrifugal force formed by the rotation of the rotor 6. The air A removes heat in contact with the stator 7 during flowing and cools in contact with a casing 8.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、例えば自動二輪車に搭載されるエンジンの
発電機に関し、より詳しくは発電機における冷却装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a generator for an engine mounted on, for example, a motorcycle, and more particularly to a cooling device for the generator.

(従来技術) 例えば自動二輪車では、近時、電装品の増加などに伴い
消費電力が増大しつつある。このため、発電機における
発電容量の増大が図られている。
(Prior Art) For example, in motorcycles, power consumption has recently been increasing due to an increase in the number of electrical components. For this reason, efforts are being made to increase the power generation capacity of generators.

また、一方において、発電機などの取付部品は車体の限
られた狭い空間に設けられるものであるため、この発電
機の小型化も進められている。そして、このような発電
容量の増加と小型化のために発電機は高温化し易い傾向
となっている。
On the other hand, since attachment parts such as a generator are installed in a limited and narrow space of a vehicle body, the size of the generator is also being reduced. Due to the increase in power generation capacity and miniaturization, generators tend to become hotter.

ところで、発電機が高温化した場合には、発電機内のコ
イルの被覆が炭化するなどして絶縁性が低下するおそれ
があることから、発電機に冷却装置の設けられる場合が
ある。このような冷却装置には例えば実開昭56−35
865号公報に示されるものがある。この構成では、発
電機がクランク軸に取り付けられた椀状の回転子と、こ
の回転子の内部に嵌り込むように設けられる固定子とを
有し、クランク軸に取り付けられた羽根車が回転子の内
周面と固定子との間の間隙に空気を送り込むこととされ
ている。
By the way, when the temperature of the generator becomes high, there is a risk that the insulation of the coils inside the generator may be carbonized and the insulation properties may deteriorate, so the generator may be provided with a cooling device. For example, the Utility Model Application Publication No. 56-35
There is one shown in Publication No. 865. In this configuration, the generator has a bowl-shaped rotor attached to the crankshaft and a stator installed to fit inside the rotor, and the impeller attached to the crankshaft serves as the rotor. Air is sent into the gap between the inner circumferential surface of the stator and the stator.

しかしながら、上記構成では、羽根車によって送り込ま
れる空気は単に回転子の径方向外方部を流動するもので
あるため、この空気により回転子内部を全体的かつ効果
的に冷却することは困難である。
However, in the above configuration, the air sent by the impeller simply flows through the radially outer part of the rotor, so it is difficult to cool the entire interior of the rotor with this air effectively. .

(発明の目的) この発明は、上記のような事情に注目してなされたもの
で、発電機内部を全体的かつ効果的に冷却することを目
的とする。
(Objective of the Invention) The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to cool the entire inside of a generator effectively.

(発明の構成) 上記目的を達成するためのこの発明の特徴とするところ
は、クランク軸に起風羽根が設けられ、この起風羽根が
クランク軸と同行回転して固定子におけるクランク軸側
の面に向って空気を送り込むよう形成された点にある。
(Structure of the Invention) A feature of the present invention for achieving the above object is that the crankshaft is provided with an air blower, and the air blower rotates together with the crankshaft to move the stator towards the crankshaft. It is located at a point formed to blow air towards the surface.

(実施例) 以下、この発明の実施例を図面により説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

lはエンジンのクランクケースで、このクランクケース
lにクランク軸2が支承される。3はシリンダ、4は図
示しないピストンとクランク軸2とを連結するコネクテ
ィングロッドである。
1 is a crankcase of the engine, and a crankshaft 2 is supported on this crankcase 1. 3 is a cylinder, and 4 is a connecting rod that connects the piston and the crankshaft 2 (not shown).

上記クランク軸2の一端がクランクケースlの外面に突
出され、クランクケース1の同上外面には発電機5が取
り付けられ、この発電機5はクランク軸2の上記突出部
に連動連結される。
One end of the crankshaft 2 protrudes from the outer surface of the crankcase 1, and a generator 5 is attached to the upper outer surface of the crankcase 1, and the generator 5 is interlocked and connected to the protrusion of the crankshaft 2.

上記発電機5は、上記クランク軸2に連動される回転子
6と、この回転子6に対応して設けられる固定子7とを
有し、クランク軸2による回転子6の回転で固定子7か
ら交流の出力が取り出される。また、これら回転子6と
固定子7を覆うケーシング8がクランクケースlの外面
に取り付けられる。
The generator 5 has a rotor 6 interlocked with the crankshaft 2 and a stator 7 provided corresponding to the rotor 6. The rotation of the rotor 6 by the crankshaft 2 causes the stator 7 to AC output is taken from. Further, a casing 8 covering the rotor 6 and stator 7 is attached to the outer surface of the crankcase l.

上記回転子6は椀状の回転部材9を有している。そして
この回転部材9の軸上に形成されたポス部9aを上記ク
ランク軸2の突出部に嵌め合わせ、かつ、ポルトllで
ねじ止めすることにより、回転子6がクランク軸2に支
持されている。
The rotor 6 has a bowl-shaped rotating member 9. The rotor 6 is supported by the crankshaft 2 by fitting the post part 9a formed on the shaft of the rotating member 9 into the protruding part of the crankshaft 2 and screwing it with the port II. .

1F−・J″41″″M、# 9 coRF1@<ff
i°116”° 1が取り付けられる。
1F-・J″41″″M, #9 coRF1@<ff
i°116”° 1 is installed.

上記固定子7は上記磁石lOに対向する鉄心12と、こ
の鉄心12に巻線されたコイル13とを有し、この固定
子7は上記ケーシング8に支持される。即ち、ケーシン
グ8にはクランク軸2の軸上に円筒部14が形成され、
この円筒部14の端部に上記鉄心12がねじ止めさ些る
。この場合、円筒部14と鉄心12との間には軟質の銅
板で形成された伝熱パツキン16が介在される。この伝
熱パツキン16は鉄心12側の熱をケーシング8に伝え
て発電機5内の放熱効果を高める。
The stator 7 has an iron core 12 facing the magnet IO and a coil 13 wound around the iron core 12, and the stator 7 is supported by the casing 8. That is, the casing 8 has a cylindrical portion 14 formed on the axis of the crankshaft 2,
The iron core 12 is screwed to the end of this cylindrical portion 14. In this case, a heat transfer packing 16 formed of a soft copper plate is interposed between the cylindrical portion 14 and the iron core 12. This heat transfer packing 16 transfers heat from the iron core 12 side to the casing 8 to enhance the heat dissipation effect within the generator 5.

」二記構成において、発電機5の内部を冷却するための
冷却装置17が設けられる。以下、この装置17につき
説明すると、上記クランク軸2の軸端には起風羽根18
が設けられる。この起風羽根18は軸流式とされ、内筒
19と外筒20を有し、これら両者間に複数の羽根板2
1が設けられる。
In the second configuration, a cooling device 17 for cooling the inside of the generator 5 is provided. Hereinafter, this device 17 will be explained. The shaft end of the crankshaft 2 has an air blowing blade 18.
will be provided. The wind blowing blade 18 is of an axial flow type and has an inner cylinder 19 and an outer cylinder 20, and a plurality of blade plates 2 are provided between the inner cylinder 19 and the outer cylinder 20.
1 is provided.

上記起風羽根18は上記ポル)11の頭部に嵌め合わさ
れると共に上記円筒部14内に配置される。一方、円筒
部14の開口を覆うようにカバ一部材22が設けられ、
このカバ一部材22の一部が内筒19端に当接する。そ
して、この当接で起風羽根18がポル)11の頭部から
抜落することが防止される。また、この起風羽根18の
吸気側と、ケーシング8内とを結ぶように円筒部14に
円筒部通気孔14aが形成され、一方、回転部材9の内
外を結ぶようにこの回転部材9の底板に回転部材通気孔
9bが形成される。
The wind raising blade 18 is fitted into the head of the pole 11 and is disposed within the cylindrical portion 14. On the other hand, a cover member 22 is provided to cover the opening of the cylindrical portion 14,
A part of this cover member 22 comes into contact with the end of the inner cylinder 19. This contact prevents the wind blower 18 from falling off the head of the pole 11. Further, a cylindrical part ventilation hole 14a is formed in the cylindrical part 14 so as to connect the intake side of the air blower blade 18 and the inside of the casing 8, and on the other hand, a bottom plate of the rotary member 9 is formed so as to connect the inside and outside of the rotary member 9. A rotating member ventilation hole 9b is formed in the rotary member ventilation hole 9b.

そして、クランク軸2の回転に伴う起風羽根18の回転
で円筒部通気孔14aがら空気Aが吸入される一方、固
定子7と、回転部材9のボス部9aとの間隙にこの空気
Aが送り込まれる。この空気Aの一部は磁石lOと鉄心
12の間を通り、また、他の一部は回転部材通気孔9b
を通り、円筒部通気孔14aに環流する。この場合、回
転子6内における空気Aの径方向外方への移動は起風羽
根18による加圧力と回転子6の回転による遠心力によ
りなされる。そして、この空気Aはその流動中に固定子
7などに接して熱を奪う一方、ケーシング8に接するこ
となどにより冷却される。
Then, air A is sucked into the cylindrical vent hole 14a by the rotation of the blowing blade 18 in conjunction with the rotation of the crankshaft 2, while this air A is sucked into the gap between the stator 7 and the boss portion 9a of the rotating member 9. sent. A part of this air A passes between the magnet lO and the iron core 12, and the other part passes through the rotating member ventilation hole 9b.
, and is returned to the cylindrical vent hole 14a. In this case, the movement of the air A in the rotor 6 radially outward is performed by the pressurizing force by the blowing blades 18 and the centrifugal force caused by the rotation of the rotor 6. During the flow, this air A comes into contact with the stator 7 and the like and removes heat, while it comes into contact with the casing 8 and is cooled down.

なお、上記の場合、ケーシング8に通気孔を形成し、こ
の通気孔を通してケーシング8内外の空気を入れ替える
ことができるようにしてもよい。
In the above case, a ventilation hole may be formed in the casing 8 so that air inside and outside the casing 8 can be exchanged through the ventilation hole.

(発明の効果) この発明によれば、起風羽根が固定子におけるクランク
軸側の面に向って空気を送り込むこととされたため、こ
の送り込まれた空気は起風翁根の加圧力と回転子の回転
による遠心力とによって、固定子外面や回転子内周面に
接しながら回転子内を径方向内方から外方に円滑に移動
することとなる。従って、発電機内部が全体的かつ効果
的に冷却される。
(Effect of the invention) According to the present invention, the air blower sends air toward the surface of the stator on the crankshaft side. Due to the centrifugal force caused by the rotation of the rotor, the rotor smoothly moves from the inside of the rotor to the outside in the radial direction while contacting the outer surface of the stator and the inner circumferential surface of the rotor. Therefore, the inside of the generator is completely and effectively cooled.

【図面の簡単な説明】[Brief explanation of drawings]

図はこの発明の実施例を示し、第1図は発電機の全体側
面断面図、第2図は第1図の■−■線矢視において起風
羽根を示す図、第3図は第2図のm−m線矢視図である
。 2・・クランク軸、5・・発電機、6・・回転子、7φ
・固定子、17・・冷却装置、18・−起風羽根。
The figures show an embodiment of the present invention, in which Fig. 1 is an overall side cross-sectional view of the generator, Fig. 2 is a view showing the wind blower in the direction of the arrow ■-■ in Fig. 1, and Fig. 3 is the FIG. 2... Crankshaft, 5... Generator, 6... Rotor, 7φ
・Stator, 17. Cooling device, 18.-Blast vane.

Claims (1)

【特許請求の範囲】[Claims] 1、クランク軸に椀状の回転子が取り付けられると共に
この回転子の内部に嵌り込むように固定子が設けられた
自動二輪車など車両用エンジンの発電機において、上記
クランク軸に起風羽根が設けられ、この起風羽根がクラ
ンク軸と同行回転して固定子におけるクランク軸側の面
に向って空気を送り込むよう形成されたことを特徴とす
るエンジンの発電機における冷却装置。
1. In a generator for a vehicle engine such as a motorcycle, in which a bowl-shaped rotor is attached to the crankshaft and a stator is provided so as to fit inside the rotor, the crankshaft is provided with blowing blades. A cooling device for an engine generator, characterized in that the blower blades are formed so as to rotate together with the crankshaft and send air toward a surface of the stator on the crankshaft side.
JP1149184A 1984-01-24 1984-01-24 Cooler for generator of engine Pending JPS60156240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1149184A JPS60156240A (en) 1984-01-24 1984-01-24 Cooler for generator of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1149184A JPS60156240A (en) 1984-01-24 1984-01-24 Cooler for generator of engine

Publications (1)

Publication Number Publication Date
JPS60156240A true JPS60156240A (en) 1985-08-16

Family

ID=11779509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1149184A Pending JPS60156240A (en) 1984-01-24 1984-01-24 Cooler for generator of engine

Country Status (1)

Country Link
JP (1) JPS60156240A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7282823B2 (en) * 2004-10-29 2007-10-16 Emerson Electric Co. Self-cooling electric machine
US7714468B2 (en) * 2005-09-12 2010-05-11 Mitsubishi Denki Kabushiki Kaisha Magnetoelectric generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7282823B2 (en) * 2004-10-29 2007-10-16 Emerson Electric Co. Self-cooling electric machine
US7714468B2 (en) * 2005-09-12 2010-05-11 Mitsubishi Denki Kabushiki Kaisha Magnetoelectric generator

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