JPS6019508Y2 - Rotor of flywheel magnet generator - Google Patents

Description

[Detailed description of the invention] The invention relates to a rotor for a flywheel type magnet generator.
More specifically, the present invention relates to an improved structure for improving the cooling effect inside the generator.

Generally, in this type of magnet generator, a wind flow is created inside due to air resistance around the hole formed at the bottom of the iron arm as the rotor rotates, and this wind cools the parts located above the flow. Ru.

However, in conventional configurations, the flow of cooling air is mainly in the circumferential or radial direction around the holes in the rotor's iron arms.
Since the area located above the wind flow has a relatively constant temperature, it was not possible to sufficiently cool the entire generator.

Therefore, the present invention focused on the fact that the iron arm of the rotor of a magnet generator has a hole, and by covering a part of this hole with the flange of the boss, a step is formed on the inner wall of the bottom of the iron arm. The purpose is to effectively cool the entire interior of the generator by disturbing the flow of air at this step.

In FIG. 1 and the second factor showing an embodiment of the present invention,
A magnet 2 is disposed on the inner periphery of the cylindrical portion of the bowl-shaped iron arm 1, and two holes 3 are provided at the bottom of the iron arm 1.

The hole 3 is provided, for example, for adjusting a breaker (not shown).

At the center of the bottom of the iron arm 1 is a boss 4 having a flange portion 4a.
is inserted and fixed to the bottom outer periphery of the iron arm 1 with a plurality of rivets 5.

The flange portion 4a of the boss 4 is formed to a size that covers a part of the inner circumferential side of each hole 3 of the iron arm 1, and the structure in which the hole 3 is partially covered with the flange portion 4a of the boss 4 allows the bottom inner wall of the iron arm 1 to be covered. A stepped portion 6 is formed in the portion.

The rotor structured in this way is arranged to face the stator 7, and a flywheel type magnet generator is constructed. In the above structure, when the boss 4 and the iron arm 1 are rotated by an engine (not shown), the inside of the boss 4 and the iron arm 1 are rotated. Wind flows as shown by the arrows.

Although this flow is mainly a flow in the circumferential direction, the direction is changed by the stepped portion 6 and circulates in the axial direction as well.

In other words, the air inside the hole 3 (inside the stepped portion 6) whose bottom outer circumferential side is partially shielded by the flange portion 4a of the boss 4 flows through the air on the opposite side to the side that is shielded by the air resistance around the periphery of the hole 3. The wind is pushed into the inside of the arm 1 and flows in the axial direction, and the wind in the axial direction disturbs the wind in the circumferential direction inside the arm 1.

Therefore, sufficient cooling air is also supplied to the stator 7.

However, the generator receives heat from the engine as well as the heat generated by the power generation process, but due to the above-mentioned wind flow, the entire area is -
It is cooled like that.

Note that the cooling air is mainly discharged from the hole 3 of the iron arm 1.

Here, since a part of the hole 3 is covered by the flange portion 4a of the boss 4, if the size of the hole 3 is the same as the conventional one (it may be larger than the conventional one), the discharge from the hole 3 is Although the cooling air itself decreases, as mentioned above, by uniformly cooling the entire area, compared to conventional systems where only relatively low temperature areas are cooled, even though the cooling air decreases. First, the cooling effect is sufficiently improved.

In this manner, in the above configuration, cooling air is supplied to the entire area inside the generator due to the wind disturbance effect by the stepped portion 6, but the stepped portion 6 is formed by covering a part of the hole 3 with the boss 4. Therefore, its formation is extremely easy.

As mentioned above, according to the present invention, with an extremely simple configuration,
The practical benefit of being able to provide effective cooling is that the dog is able to provide effective cooling.

[Brief explanation of the drawing]

FIG. 1 is a front view of the magnet generator according to the present invention, and FIG. 2 is a cross-sectional view taken along the line -■ in FIG. 1... Tetsuwan, 3... Hole, 4...
・Boss, 4a...Flange part, 6...
Danbe.

Claims (1)

[Scope of utility model registration request] A boss having a flange portion having a shape that covers a part of the hole is fixed to the outer periphery of the bottom of the iron arm having a hole, and a boss having a flange portion that covers a part of the hole is fixed to the inner wall of the bottom portion of the iron arm. A rotor for a flywheel type magnet generator, characterized by having a stepped portion.