JPS60216737A - Fly-wheel power source apparatus - Google Patents

Abstract

PURPOSE:To improve cooling efficiency for frictional heat transferred from a shaft bearing means to a stator frame and for heat at a power generator unit, by exposing the stator frame outward from the lower portion of a casing. CONSTITUTION:When voltage is applied to a winding 7A of a stator 7 through an electric power source, a magnetic field is generated between the winding 7A and a magnet 9, and a rotor 4 and a fly-wheel 3 are rotated. Then, the winding 7A generates heat with electrical loss and heat is transferred to a stator frame 23 and temperature rise occurs, and the stator frame 23 is exposed outside a casing 21, and sufficient dissipating effect is obtained because fins 26 are formed on the frame side 23.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a flywheel power supply device, and particularly to a flywheel power supply device with a 5V voltage that exposes a part of a stator frame provided on the bottom side of a casing to the outside of the casing. It is something.

[Prior art]

Conventionally, as shown in Fig. 1, a flywheel power supply device has been proposed in order to compensate for power outage accidents, and this flywheel power supply device 1 has a flywheel installed inside a casing 2 whose interior is a vacuum sealed chamber. 3 is rotatably attached.

The flywheel 3 is integrated with a rotor 4 that extends downward from the outer circumferential side, and a rotary shaft 5 is provided in the center of the flywheel 3 and extends downward. The bottom side of the casing 2 protrudes downward to form a recess 6 in the casing 2, and this recess 6 has a winding 7A that rises upward and is provided inside the rotor 4 of the flywheel 3. A stator frame 8 is provided to which the stator 7 is mounted, which is made up of an iron core 7B holding a wire 7A. Furthermore, a magnet 9 corresponding to the winding 7A is attached to the inner periphery of the rotor 4. Thus, the above winding? A, iron core 7B, stator frame 8 and magnet 9
The generator-motor section is configured by:

On the other hand, the rotating shaft 5 is held by a bearing 10 provided at the center of the recess 6 of the casing 2, and the upper part of the flywheel 3 is supported by a horizontal portion 12 of a support 11 provided along the inner wall of the casing 2. Axial support 1 installed in Nakao
It is pivoted on 3.

Further, a plurality of cooling fins 15 are formed on the outer side wall of the protrusion 14 that protrudes downward in correspondence with the recess 6 of the casing 2 .

According to the above configuration, when voltage is applied from the power supply to the winding 7A of the stator 7, the rotor 4 rotates and acts as an electric motor, causing the flywheel 3 to rotate at high speed, accumulating energy, and connecting the external power supply. During an abnormal power outage, the rotary energy stored in the flywheel 3 and rotor 4 acts as a generator to supply power to a load such as a computer. At this time, while the former generator-motor section generates heat due to electrical loss, the rotating shaft 5 and bearing 10 of the flywheel 3 rotate at high speed and generate frictional heat, so the temperature rise due to this heat does not reduce the accuracy of the device. The bottom side of the stator frame 8 has a wide flange, and frictional heat is transferred from the flange to the protrusion 14 of the casing 2 with good heat conduction efficiency, and the fins 15 from the protrusion 14 provide a cooling effect.

However, according to the conventional flywheel power supply device as described above, the bottom of the stator frame 8 and the bottom of the recess 6 of the casing 2 are not completely flat, so the heat of the stator frame 8 is not properly transmitted to the casing 2 side. However, sometimes the temperature rises extremely and the flywheel 3
The disadvantage was that sufficient rotational performance could not be expected.

[Summary of the invention]

The present invention has been made to solve the above-mentioned drawbacks, and by exposing the stator frame to the outside from the bottom of the casing, the efficiency of cooling the frictional heat transmitted from the bearing section to the stator frame and the heat generated in the generator motor section is improved. This will be explained in detail below using the drawings.

[Embodiments of the invention]

FIG. 2 is a sectional view showing an embodiment of the flywheel power supply device according to the present invention, and in this figure, the same reference numerals as in FIG. 1 indicate the same or corresponding parts. The flywheel power supply device 20 of the present invention has a casing 21 that opens at the center of the bottom side.
A flywheel 3 is rotatably housed inside the casing 21, and a stator frame 23 according to the present invention is fixed to the opening 22 so as to close the opening 22 and seal the inside of the casing 21. The bearing portion 10 of the rotating shaft 5 of the flywheel 3 is inserted into the stator frame 23 from the lower side so as to close the hole 24 formed in the center of the stator frame 23.
It is supported by a bearing pedestal 25 fixed to. The stator frame 23 and the bearing pedestal 25 each have fins 2 to cool the frictional heat between the rotating shaft 5 and the bearing portion lO.
6. '27.

In the above configuration, when a voltage is applied from the power supply to the winding 7A of the stator 7, a magnetic field is generated between the winding 7A and the magnet 9, and the rotor 4. The flywheel 3 rotates. At this time, heat is generated in the winding 7A due to electrical loss, and the heat is transferred to the stator frame 23 to which the winding 7A is attached, causing a temperature rise. However, the stator frame 23 is exposed to the outside of the casing 21, and the side Since the fins 26 are formed in the fins 26, a sufficient heat dissipation effect can be obtained.

Moreover, frictional heat is generated on the rotating shaft 5 and the bearing part 10 by the flywheel 30 rotations, and this heat is transmitted to the bearing pedestal 25 housing the bearing part 10, and the upper side wall and step part of the bearing pedestal 25 are heated. Heat is also conducted to the stator frame 23 located above, and this heat is also radiated from the fins 26 provided on the side walls of the stator frame 23. In this way, various types of heat generated within the flywheel power supply device 20 are radiated by the stake frame 23 and the cooling effect is enhanced, thereby improving the rotational performance of the flywheel 3 and the electric power and power generation performance of the flywheel power supply device 20. be able to.

In the above embodiment, the bearing pedestal was described as being provided on the lower side of the stator frame, but the present invention is not limited to this, and the bearing pedestal may be of any shape or form as long as it is exposed outside of the stator frame. good. Also, fin 2
6 may not be formed.

〔Effect of the invention〕

As explained above, according to the flywheel power supply device according to the present invention, a part of the stator frame that is attached to the bottom side of the casing of the flywheel power supply device and holds the stator windings is exposed to the outside of the casing. Therefore, the heat generated in the windings, bearings, etc. can be rapidly radiated to the outside of the casing, and the rotational performance of the flywheel and the electric power and power generation performance of the flywheel power supply device can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional flywheel power supply device, and FIG. 2 is a sectional view showing an embodiment of the flywheel power supply device according to the present invention. 1.20... Flywheel power supply device, 2゜21...
・Casing, 3... Flywheel, 4... Rotor, 7A... Winding, 7... Stator, 9... Magnet, 23... Stator frame, 2'6.27.
··fin. Agent Masu Oiwa A (and 2 others) Continuation of page 1 @ Inventor Hiratsuka - Husband 0 Inventor Muto Jo 5-1-14 Yataminami, Higashi-ku, Nagoya Mitsubishi Electric Co., Ltd. 8 Tsukaguchi Honmachi, Amagasaki City 1-1 Mitsubishi Electric Corporation Central Research Laboratory

Claims (1)

[Claims] It consists of a flywheel rotatably provided in a casing, a stator frame that holds magnets fixed to the flywheel and windings corresponding to the magnets, and is attached to the bottom side of the casing. A flywheel power supply device having a generator-motor section that applies rotational force and converts the rotational force into electrical energy, characterized in that a part of the stator frame is exposed outside the casing. .