CN2498784Y

CN2498784Y - Multi-brush D.C. generator

Info

Publication number: CN2498784Y
Application number: CN 01264708
Authority: CN
Inventors: 常玉生
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-07
Filing date: 2001-09-07
Publication date: 2002-07-03
Anticipated expiration: 2011-09-07

Abstract

Disclosed is a multi electric brush direct current generator. By pivoting friction, the electric brushes contact with the commutator which is connected to a rotor coil tap in order to form a circuit between the generator and the load; a pair of electric brushes is usually positioned where the rotor coil perpendicularly cuts the magnetic line, and the interface of the electric brushes and the commutator is an anastomosing and curved surface; the key point lies in that a pair of auxiliary electric brushes is positioned where the connecting line of the prior two electric brushes deflects 90 degree to constitute with the prior electric brushes a multi electric brush generator composed of a pair of major electric brushes and a pair of auxiliary electric brushes. Thereby, part of the electric quantity that exists in the coil after the generator rotor leaves the major electric brushes is to be linked with the load and extracted. Consequently, the generating capacity of the generator is improved.

Description

Many brushes DC generator

The utility model belongs to the improvement technology of generator brush.

Existing generator all be adopt two brushes outwards send send.Be that generator amature circles, every group of coil constitutes the primary circuit by brush and load, send once to load.Usually this position of contacting with brush of rotor coil is in the optimum position of this coil cutting magnetic line, promptly coil forward to the magnetic line of force be this position, the left and right sides, 90 ° of angles.Just electromotive force is in stage of peak value in the coil.When coil forwards to when leaving brush, though be not in plumbness with the angle of the magnetic line of force, but because the magnetic pole of the stator area is bigger, still have the part magnetic line of force to be cut by coil, up to coil forward to identical with magnetic line of force direction during, the electricity of some is just arranged in the coil,, just can outwards send these electricity as long as can constitute the loop with load.These electricity fail to obtain to utilize, and just because common generator has only a pair of brush, can only form the primary circuit with load near the electricity peak value is sent, and promptly former generator is sent out once from 0 ° to 180 °.

The rotor of a kind of generator of confession that the purpose of this utility model just is can constitute the loop that is connected with load respectively with two pairs of brushes, reaches generator amature and circles and send out many brushes generator of four electricity.

The scheme that realizes above-mentioned purpose is as follows:

Many brushes generator, brush rotates friction by the commutator that is connected with the rotor coil tap and contacts, make generator and load constitute the loop, a pair of brush is in the position of the rotor coil perpendicular cuts magnetic line of force, the curved surface of the contact-making surface of brush and commutator for coincideing, key be with the position in 90 ° of intervals of the line of original two brushes inhour deflection, it is discontiguous to have made a pair of and original brush, electric generator rotor coil at the auxilliary brush of drawing from positive electricity peak value and the negative electricity peak value electricity that cutting magnetic line exists between the zero potential transition zone, is constituted many brushes generator of major-minor two pairs of brushes with original brush.

Further scheme is that a pair of auxilliary brush is produced on the position with 65 ° of original two brush shunt counter-clockwise direction deflections.Each is connected with an electrode to brush with lead and is connected with load, constitutes two to the loop of sending electricity outside.Just make the generator of brush more than according to such scheme, by with the main brush of former generator same position and with a pair of auxilliary brush at 65 ° of angles of two former brush shunt deflection, constitute power generation circuit with load respectively.Like this, generator whenever circles and just can send out electricity four times, and promptly rotor coil changes 90 ° once.

The utility model has the advantages that in rotor operation, every group of coil is during being in the perpendicular cuts magnetic line of force, the positive and negative charge peak of generation, is sent electricity with the loop generating that load forms by a pair of main brush that is positioned at this position; When coil forwards the disengaging main brush to, to auxilliary brush near during the quantity of electric charge that produces, will generate electricity with the loop that load forms by auxilliary brush, electricity is sent.The experiment proved that, auxilliary brush has been installed after, generator will be at least can send main brush by auxilliary brush and send 25% of electric weight.Thereby improved the generating capacity of generator, the energy output in the actual experiment in the auxilliary brush loop reaches 75% of electric weight in the main brush loop.Secondly, because two groups of brushes have been arranged, if wherein one group of brush is out of joint, one group of brush can operate as normal in addition.Avoided having caused shutting down the loss that causes because of brush is out of order.

The schematic perspective view of Fig. 1, the main and auxiliary brush of the utility model and the mutual position of coil commutator;

The distribution schematic diagram of Fig. 2, four brushes.

Fig. 3, generator amature power generation region schematic diagram.

Below in conjunction with accompanying drawing,, scheme of the present utility model is specified as embodiment.

With reference to Fig. 1, the coil of the generator amature 1 of present embodiment has 9 groups, and corresponding 9 commutators that have contact with

brush

2,3,4,5 rotations, by them each coil with generator amature generation in service, form the loop by brush and load, send with current forms.Brush is by a pair of

main brush

3 and 5 that is positioned at during the rotor coil perpendicular cuts magnetic line of force, a pair ofly is positioned at auxilliary brush 2 and 4 two pairs of brushes that coil departs from during the main brush and forms.Main and auxiliary brush forwards every group of coil of generator amature 1 in the process of being in contact with it to respectively, and the electric charge that forms in the coil is guided in the loop that constitutes with load, forms electric current, promotes loaded work piece.Just make 0 °-180 ° of every group of coil revolutions in the rotor 1 of generator constitute two minor loops, to sending outside twice with load.

With reference to Fig. 2, main brush 3, over against the position of commutator 6 pairing coil groups, main brush 5 is in and

commutator

10,11 contact conditions simultaneously, this

moment commutator

10,11 and 6 pairing coil groups all be in the perpendicular cuts magnetic line of force during, the positive electricity that produces in the coil, negative electricity peak value constitute loop output by two

main brush

3,5 and load.Auxilliary 2,4 of brushes are produced on line counter-clockwise direction angle α with

main brush

3,5 and are 65 ° and locate.Also promptly two auxilliary brushes 2,4 are respectively on the coil position of

commutator

13,9 correspondences, and then the electricity that exists in commutator 13 and the 9 pairing coils is exported by the loop that auxilliary brush 2,4 and load constitute.So just can each coil in changeing 0 ° of-180 ° of process, contact once, form the loop, send out once with load with two main brush; After coil forwards the disengaging main brush to, there is the electromotive force that dies down gradually, the coil commutator will forward to two auxilliary brushes and contact this moment, the loop that constitutes by they and load, send out once electricity again, reach the generator amature commentaries on classics and sent out electricity twice for 0 °-180 °, improve energy output 25% at least.Equally,

commutator

7,8,12,14 will alternately contact with main and auxiliary brush in rotor 1 rotation process, form the loop generating with load.Experiment also draws, adjust auxilliary brush at positive electricity peak value and negative electricity peak value the position between 0 weakened region, can be in the loop of auxilliary brush and load acquisition be equivalent to 75% of electric weight in main brush and the load circuit.

With reference to Fig. 3, be described further with regard to the service area of two groups of brushes.The line of the position of two main brush is the longitudinal axis, and with its vertical transverse axis from left pointing right, left end is 0 °, and right-hand member is 180 °, like this, by custom, the number of degrees are by arranged clockwise, longitudinal axis upper end is 90 °, and its lower end is 270 °, and original brush just is produced on longitudinal axis two ends.Generator amature is done counter rotation, then when its when 0 ° forwards 270 ° to, produced the negative electricity peak value in the coil, send by main brush; When coil leaves 270 ° of positions, in 180 ° of rotations, electromotive force is attenuated to 0 from negative peak value, coil from 180 ° to 90 ° of rotations, electromotive force increases from 0 to the positive electricity peak value, is also powered to the load by brush; Coil turns to 0 ° from 90 °, promptly gets back to original position, and electromotive force is weakened to 0 electromotive force by the positive electricity peak value.Wherein, coil forwards existing electricity 180 ° of processes to from 270 ° forwarding the neutralization of 0 ° of process to from 90 °, then sends by two auxilliary brushes.

In addition, utilize many brushes technology that alternating current generator and motor are made improvements, the former can reach the effect that improves energy output, and the latter can improve or regulate motor speed.Also find two groups of brush series connection promptly are connected main brush 5 with auxilliary brush 2, main brush 3 is connected with the primary coil of transformer with auxilliary brush 4, in secondary coil, just produced the alternating current of induction.

In the generating effect experiment of doing this auxilliary brush and main brush, adopted the DC motor of 9 coil groups to make generator usefulness, with the rotation of bicycle rear as power, drive rotor and do counter rotation, obtained the loop that forms with bulb by the auxilliary brush 2,4 that increases newly in two intervals of 3 points (90 °) to 0 ° of point and 5 points (270 °) to 180 ° of points, bulb is luminous.Illustrated that generator coil has produced the in service of these two intervals.

Claims

1, a kind of many brushes DC generator, brush rotates friction by the commutator that is connected with the rotor coil tap and contacts, make generator and load constitute the loop, a pair of brush is in the position of the rotor coil perpendicular cuts magnetic line of force usually, the curved surface of the contact-making surface of brush and commutator for coincideing, it is characterized in that and 90 ° of the line deflections of original two brushes between the position, made a pair of auxilliary brush, constitute many brushes generator of major-minor two pairs of brushes with original brush.

2, many brushes DC generator according to claim 1 is characterized in that a pair of auxilliary brush is produced on the position with 65 ° of original two brush shunt counter-clockwise direction deflections.

3, many brushes DC generator according to claim 1 and 2 is characterized in that each is connected with an electrode and is connected with electric loading with lead brush, constitutes two to the loop of sending electricity outside.