JPS58214032A - Flywheel device - Google Patents

Abstract

PURPOSE:To easily and rationally perform cooling through a heat pipe, by arranging a stator of a motor generator to the upper position from a flywheel. CONSTITUTION:A flywheel 25 is mounted to the bottom part of a rotary shaft 21, and a rotor 27 and a stator 28 of a motor generator 26 are arranged to the upper part of the shaft 21, then a bottom end heat collector part of a heat pipe 29 parallelly arranged to an axial line of the shaft 21 is connected to the stator 28. An upper end heat radiating part of the heat pipe 29 is extended through a vacuum casing 22 and protruded to the outside, and a cooling fin 20 is provided to the protruded upper end heat radiating part. By this constitution, generated heat in the inside of the stator 28 is vertically transferred from the bottom part to the upper part through the heat pipe 29 and emitted to the atmosphere from a surface of the cooling fin 20, and a cooling effect can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flywheel device comprising a flywheel and a motor generator, in which the motor generator is completely installed above the flywheel, and a heat pipe is used as a cooling device for the stator. It is a L-sized container that can be easily placed.

A conventional device of this type is shown in FIG. In the same figure, %(1) U casing (2) has upper and lower bearings (
8), the next rotating shaft is supported via (4), and this rotating shaft (
A flywheel (5) is attached to the upper part of 1), and a rotor (7) of a motor generator (6) is attached to the lower part of t-b. The stator (8) of the electric power generator 1a (fl) is arranged and fixed around the rotor (te), and a water cooling pipe (9) is provided for circulating cooling water to the stator (8).

In the conventional flywheel device, the motor generator (6) was placed below the flywheel (6), and its cooling was done by circulating cooling water through the water cooling pipe (9). The configuration and construction of the cooling system, including the pipes, was complicated.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above.The stator of the motor generator is placed above the flywheel edge, and a backing that can be easily cooled by a heat pipe is used. It was made by sea urchin. As for the operating characteristics of a heat pipe, if the heat collecting part and the heat dissipating part of the heat pipe are located in close vertical positions, cooling heat can be transferred more effectively and the cooling effect can be completely improved.

By arranging the stator above the flywheel, the arrangement of the heat pipes can be extremely easily obtained without such modification.

An embodiment of the present invention will be described below with reference to FIG. In Figure 2, (21) is the rotating shaft, the lock is the vacuum casing,
Dr, IJHu bearing, 2) is a flywheel, and this flywheel (2) is attached to the lower part of the rotating shaft 121; At the top of the rotating shaft 121) is a motor generator 12!6)
The lower end of the rotor (21: placed parallel to the axis of the rotor (21) and the heat vibrator (21) is connected to the lower end of the heat vibrator (21), which collects heat at the lower end of the rotor (21). The upper end heat dissipation part of the heat pipe 4 penetrates through the vacuum casing 1 and projects to the outside, and cooling fins are provided on the protruded upper end heat dissipation part.

With the above-described configuration, the heat generated inside the stator of the motor generator is transferred vertically from the bottom to the top via the heat pipe 129), and is discharged from the surface of the cooling fins (80) to the atmosphere. It emanates inside. The heat pipe (29) has a heat collecting part at the bottom and a heat dissipating part at the top, and if it is straight, the heat transfer will be smoother and the cooling effect will be significantly better. In the present invention, a preferred configuration can be easily adopted.

In the above embodiment, an inner rotor type motor generator is shown, but the same effect can be obtained even if the motor generator is an outer rotor type in which the rotor rotates around the outer periphery of the stator, as shown in FIG.

As described above, according to the present invention, since the stator is disposed above the flywheel, cooling by the heat pipe can be easily and rationally performed.

Moreover, since the cooling fins can be placed at a high location, an excellent cooling effect can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional flywheel equipment f;
This figure is a sectional view showing a flywheel device according to one embodiment of the invention, and FIG. 3 is a sectional view showing a flywheel device according to another embodiment of the invention. f21: Rotation axis - Two flywheels Liu: Motor generator (b) ta"l: Rotor μs), -
: Stator (291: Heat pipe 9101 : Cooling fin No. 11Q 14 22 Continuation of page 1 [Phase] Inventor Kagi Yabuuchi Amagasaki City Minami Shimizu Aza Nakano (Capital) Address Amended procedures within Mitsubishi Electric Corporation Production Technology Research Center (Spontaneous) Commissioner of the Japan Patent Office 2, Name of the invention flywheel device 3, Representative of the person making the amendment, Kata Yuhito 4, Attorney 5, Detailed description of the invention and drawings in the specification to be amended. Brief explanation column and drawings 6. Contents of amendment (1) The description "Fin + 30) J" on page 3, line 12 of the specification is amended to "Fin ■". (2) The description "r+*+: heat pipe" on page 4, line 19 of the specification is corrected to "r129+, (4): heat pipe." (3) The description "-): Cooling fin" in the fourth Sadasue line of the specification is corrected to "(A), (Chrysanthemum): Cooling fin." (4) Figures 2 and 3 of the drawings will be corrected as shown in the attached sheet. 7. Attached catalog drawings (2 copies, Figure 2, Figure 3)

Claims (1)

[Claims] In a flywheel device, the flywheel is provided with a rotating shaft and a motor-generator having a rotor that rotates integrally with the rotating shaft. A flywheel device characterized in that a heat pipe for cooling the stator of a motor generator is connected to the stator.