Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1994-10-31
1997-01-07
Marmor, Charles A.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
74DIG4, F03G 308, F16C 3204
Patent
active
055905684
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a device and a method for rotation, so adapted as to efficiently rotate a layered rotating body in a layer structure consisting of a plurality of rotating plates arranged in layers.
For example, when the rotating plates are employed as flywheel disks, such a rotating device can be employed for a flywheel energy storage system for storing rotating energy produced by rotating the flywheel disks at a high speed.
BACKGROUND ART
A flywheel energy storage system is so adapted as to store rotational energy produced by rotating a flywheel disk at a high speed, and the rotation of the flywheel disk is urged with an electric motor. For such a flywheel energy storage system, the rotational energy to be stored can be made greater as the flywheel disk becomes heavier and as it is rotated at a higher speed.
In order to allow the flywheel disk having a heavy weight to rotate at a high speed from its stationary state within a short time, a large-size and large-rated electric motor having a great magnitude of a driving torque is required. Such an electric motor, however, is expensive and a place where it is to be installed should be large, whereby the total system also becomes too large in size.
On the other hand, when the attempt is made to rotate a flywheel disk having a heavy weight at a high speed by an electric motor small in size and to drive the rotation of such a heavy flywheel disk directly by means of an output of the such small-size electric motor, there is the risk that the electric motor becomes in an overload state and it is burned out. Hence, the flywheel disk is required to be rotated gradually by means of a certain transmission mechanism in order to cause no or little overload to be imposed upon the electric motor. This system, however, requires a long time for rotating the flywheel disk at a high speed. Further, such a transmission mechanism produces energy such as heat, resulting in a loss of energy.
The present invention has been performed with the above situation taken into account and the object of the present invention is to provide a device for rotation and a method therefor, capable of efficiently converting sequentially input rotative driving power into the rotational energy of the whole of the layered rotating body of a layer structure. This arrangement allows even a small-sized electric motor to rotate the heavy flywheel disk at a high speed within a short time.
DISCLOSURE OF INVENTION
In order to achieve the object as described hereinabove, one aspect of this invention is to provide a rotating device for rotating a layered rotating body in a layer structure comprising a plurality of rotating plates arranged in layers in a spaced relationship equally apart from each other and with their rotating axes aligned coaxially, which is characterized in that, on each of said layered rotating plates of the layered rotating body, a group of each of magnetic poles (31 to 37) is provided on the surface of the respective rotating plate facing the neighboring layer; said group of each of the magnetic poles is made equal in polarity to another group of each of the magnetic poles provided on the surface of the respective rotating plate of the neighboring layer; and each magnetic pole of the group of the magnetic poles provided on the surface of the respective rotating plate of the neighboring layer is arranged alternately with each magnetic pole of the group of the magnetic poles provided on the surface of the respective rotating plate facing the neighboring layer, when the rotating plates are in a stationary state.
For the rotating device, the group of each of its rotating plates comprises a plurality of magnetic poles arranged on each rotating plate at equal angles about the axis of rotation of its rotating plates and in an equally spaced relationship apart from its neighboring magnetic poles.
The rotating device in this aspect of the invention is arranged in such a manner that the rotative driving power input into the rotating plate of an input layer is
Battista MaryAnn
Marmor Charles A.
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