YEH SHOW-JONG (US)
TU YU-TA
YEH SHOW-JONG (US)
US5578877A | 1996-11-26 | |||
US6220719B1 | 2001-04-24 | |||
US6768230B2 | 2004-07-27 |
1. | A linear electric generator having at least one accelerating element, comprising magnetic elements and windings aligned along an axis and arranged to be moved relative to each other upon application of an external forcé, wherein said accelerating element is provided at an end ofsajkl axis to apply force to the relatively moving magnetic elements in order to reverse their direction of travel and accelerate their motion. |
2. | The linear electric generator according to claim 1, wherein said accelerating element is made of resilient rubber 3. |
3. | The linear electric generator according to claim 1, wherein said accelerating element is a spring. |
4. | The linear electric generator according to claim 1, wherein said accelerating element includes a magnetic material or system which generates a repulsive force to said magnetic elements. |
5. | The linear electric generator according to claim 1, wherein said accelerating element includes a combination of resilient elements and magnetic materials. |
6. | The linear electric generator according to claim 1, wherein sai>d acceleratiw element includes a magnet having a same polarity as that of the magnetic elements so that when the magnetic elements mdve close thereto, the magnetic elements are repulsed thereby. |
7. | The linear electric generator according to claim 1, wherein said accelerating element is an element of a machine system or device for applying a force to said magnetic elements. the linear electric generator according to claim 1, wherein at least one said accelerating element is provided at each end of said axis. |
2. Description of the Related Art A generator is a machine which converts mechanical energy into electrical energy and basically utilises Faraday's Law and Lenz's Law to effect the generation of electricity.
There are a wide variety of electric generators. In general, the generators are classified into rotary generator systems and linear generator systems.
For a common type of rotary generator, the windings (stators) thereof are distributed around a circle and a magnetic rotor is provided at the center thereof. In order to operate the generator, magnetic lines are introduced into the windings, and a permeable trial is provided such as, for example, a core inside the winding.
However, this will generate an attractive force between the magnetic rotor and the permeable material and tqrefore cause, a resistance force against the rotation of the rotor. Moreover, during the rotation of the rotor, the shorter the distance, the greater the number of magnetic lines of the stator windings that are crossed, and vice versa.
On the whole, the number of magnetic lines crossed is decreased and therefore, the induced electromotive force cannot be increased.
For a linear electric generator, the magnetic elements and the windings are m linearly reciprocal motion against each other. In order to reduce the undesired magnetic resistance, a permeable material is rarely provided in the windings.
However, because in á linear electric generator, the magnetic elements and the windings are moved in a relative direction, a ditnagnetic effect is more or less in existence, which causes resistance to the motion of the magnetic elements within the windings. Therefoe, the induced electromotive force is lowered.
Summary of the Invention The object of the present inventipn is, therefore, to provide a linear electric generator having accelerating elements therein no permeable material is provided and thus the diamagnetic effect can be minimized. In addition, the accelerating rebounding elements are disposed at the two ends of the magnetic elements so that the linear motion of the magnetic elements within the windings can be accelerated.
Therefore, the resistance resulted from the diamagnetic effect can be reduced in order to increase the induced electrical motive force.
Brief Description of Drawipg Fig. 1 is a schematic drawing of the linear electric generator having accelerating elements according to the present invention.
Detailed Description of Preferred Embodiment Referrjg to Fig. 1, a linear electric generator having accelerating elements according to the present invention is shown by the rqain elementsthereof. The linear electric generator 1 mainly comprises a plurality of windings 11 with no permeable material. Magnetic elements 12 are disposed on the right and left sides of said windings 11 respectively, and accelerating elements 13A, 13B are disposed on the sides of said magnetic elements 12 respectively.
In order to avoid the occurrence of undesired magnetic resistance, the windings 11 are not provided with permeable material. Since the relative motion of the magnetic elements and the windings results in a diamagnetic effect, a relative magnetic field occurs in the course of the linear motion of the magne, tic elements, which will resist the linear motion of said magnetic elements. However, since accelerating elements 13A, 13B are provided according to the present invention, during the return travel the magnetic elements 12 will collide with the accelerating elements 13A, 13B and thus the rebounding of said magnetic elements 12 will be accelerated by the rebounding force applied by the accelerating elements 13A, 13B.
Therefore, the above-mentioned resisting force is overcome, and in addition the magnetic elements are accelerated eveS after a number of collisions and rebounds, so that a relatively high electromotive force can be obtained.
Said accelerating elements 13A, 13B can be made of a material such as resilient rubber, springs, a combination thereof, or the like, or made of a magnetic material or system which will generate a repulsive force against said magnetic eletents 12, or a combination of resilient and magnetic elements. The accelerating elements may also be part of a machine ; device, or system for generating the rebounding or repulsive force. However, during the motion, the magnetic elements 12 do not come into contact with said magnetic material or system having a rebounding function, but are rebounded by the repulsive force thereof Although a specific embodiment has been illustrated and described, it will be obvious to those skilled in the art that various moduications may be made without departing from-the spirit which is intended to be limited solely by the appended claims.