CN1652437A

CN1652437A - Multi-magnetic pole DC motor

Info

Publication number: CN1652437A
Application number: CN 200510042311
Authority: CN
Inventors: 陈维军
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-08
Filing date: 2005-01-08
Publication date: 2005-08-10

Abstract

The disclosed DC motor includes following parts: chassis, stator installed inside chassis, rotor core setup at shaft, armature winding on core for generating magnetic beam, and converter installed on the shaft for supplying power to armature windings. There are at least more than two pairs of magnetic poles on the stator. Number of winding on armature is twice of number of stator pole. Multiple windings on armature are separated into two groups of winding. In each group, adjacent windings generate same magnetic pole so as to increase density of magnetic flux, or avoid cancel of magnetic flux. Thus, work efficiency of DC motor is increased. Cascaded windings in each group are connected to converter installed on shaft.

Description

Multi-magnetic pole DC motor

Technical field

The present invention relates to a kind of DC motor, relate in particular to a kind of multi-magnetic pole DC motor.

Background technology

Commonly used now has the required magnitude of current of brush DC motor big, therefore be not suitable for producing powerful DC motor, the main cause that the DC motor energy consumption is big is exactly the coil using method imperfection also of rotor, because present motor rotor coil is connected, the magnetic field that adjacent actuating coil the produces part of cancelling out each other causes the unnecessary loss of electric current.

Summary of the invention

Technical problem to be solved by this invention provides a kind of utilance that improves electric current, reduces the multi-magnetic pole DC motor of energy consumption.

For achieving the above object, technical scheme of the present invention is: multi-magnetic pole DC motor comprises casing, comprise the stator that is installed in the casing, be installed in the rotor core in the rotating shaft, be wrapped in this rotor core, make it produce the armature winding of flux, be installed in the above-mentioned rotating shaft, transducer to above-mentioned armature winding power supply, described stator has the magnetic pole more than two pairs at least, the described quantity that is wrapped in the coil of the armature winding in this rotor core is the twice of magnetic pole of the stator quantity, a plurality of coil spacings of described armature winding (5) are divided into two actuating coil groups, the magnetic field adjacent magnetic pole that the adjacent coil of each actuating coil group produces is identical, and the coil series connection back of each actuating coil group is electrically connected with the transducer on being installed in rotating shaft.

Owing to adopt technique scheme, multi-magnetic pole DC motor comprises casing, comprise the stator that is installed in the casing, be installed in the rotor core in the rotating shaft, be wrapped in this rotor core, make it produce the armature winding of flux, be installed in the above-mentioned rotating shaft, transducer to above-mentioned armature winding power supply, described stator has the magnetic pole more than two pairs at least, the described quantity that is wrapped in the coil of the armature winding in this rotor core is the twice of magnetic pole of the stator quantity, a plurality of coil spacings of described armature winding are divided into two actuating coil groups, the magnetic field adjacent magnetic pole that the adjacent coil of each actuating coil group produces is identical, and the coil series connection back of each actuating coil group is electrically connected with the transducer on being installed in rotating shaft; The magnetic field adjacent magnetic pole that the adjacent coil of each actuating coil group produces is identical, has increased the density of the magnetic line of force, has avoided cancelling out each other of the magnetic line of force, thereby has improved the operating efficiency of DC motor.

Description of drawings

Accompanying drawing 1 is the structure principle chart of the embodiment of the invention.

Accompanying drawing 2 is winding diagrams of one group of actuating coil of the embodiment of the invention; Wherein, s1, s2, s3, s4, s5, s6, s7, s8 are transducer 6 is connected and passes through the brush input current with rotor coil lug plate.

Embodiment

As shown in Figure 1, multi-magnetic pole DC motor, comprise casing 1, be installed in the stator 2 in the casing 1, be installed in the rotor core 4 in the rotating shaft 3, be wrapped in this rotor core 4, make it produce the armature winding 5 of flux, be installed in the above-mentioned rotating shaft 3, transducer 6 to above-mentioned armature winding 5 power supplies, described stator 2 is provided with two pairs of magnetic poles, the described quantity that is wrapped in the coil of the armature winding 5 in this rotor core 4 is that coil is 8, and be divided into two actuating coil groups at interval, the magnetic field adjacent magnetic pole that the adjacent coil of each actuating coil group produces is identical, and the coil series connection back of each actuating coil group is electrically connected with the transducer 6 on being installed in rotating shaft 3.

Rotor of the present invention is with different in the past, and the groove number of armature rotor can be set as required, and this rotor is made up of three parts, and (1) rotating shaft 3 is an one with commutator; (2) insulating case is installed in rotating shaft 3, is with eight stent foots at this cover outer, be used for support rotor iron core 4, this stent foot must be done with non-magnet material copper or aluminum; (3) center of rotor core 4 is open circles annulars, rotor core 4 interior rings are enclosed within stent foot and get on, rotor core 4 peripheries are with eight wire casings, each groove is interior only around one group of coil, shared eight groups, coil distribution is around rotor, the method of coiling, be rise in the bottom of wire casing around, pass again in the silicon steel around system, when the coil of coiling has electric current to pass through in this way, on the cell wall of every group of coil both sides, just there are two electromagnetic poles to embody, be respectively the N utmost point and the S utmost point, because every group of coil all produces two electromagnetic poles, this rotor only needs four groups of coils just can satisfy the rotor acting, these four groups of coil common properties bear eight electromagnetic poles, just rotor also has only eight cell walls, each electromagnetic pole occupies a cell wall, be covered with whole rotor around, if the consumption of every group of coil equates, on each cell wall, all can obtain the magnetic line of force of equivalent, all electrodes do not have the branch of power, the effect that motor rotor produces in this way is very desirable, the order of connection of rotor coil, if every group of coil is all by same direction coiled, 51,53,55,57 coils couple together (at interval one group), 52,54,56,58 4 groups of coils couple together, the head of first group of coil is connected on the commutator, the lug plate of commutator is with eight compositions, optional a slice connects, and first group tail is connected with the tail of the 3rd group of coil, and the 3rd group head links to each other with the 5th group head, the 5th group tail links to each other with the 7th group tail, the 3rd brace that is connected on the commutator of head of the 7th group gets on, and remaining four groups of coil connects with above identical mode, selects second brace that is connected commutator of second group of coil to get on, after coil has connected, also vacant on commutator have four braces, and each sheet couples together with that sheet of facing mutually with the opposite with a lead, and this rotor has just been finished, the position of brush contact commutator, first brush optional position on commutator contacts with commutator, and second that sheet interval a slice that brush contacts with first brush on commutator just contacts with the 3rd of commutator, these two brushes have just been connected one group of coil that is together in series of rotor, because the actuating coil group has two groups, 51,53,55,57 are called A group, 52,54,56,58 are called the B group, if the coil that these two brushes are connected is that (at this moment the B group is in Light Condition to the A group, do not have load, its effect is and the alternately acting of A group), when electric current passes through built-up coil, every group of coil all produces two electromagnetic poles, these four groups of coils just have eight electromagnetic poles, and two identical magnetic poles merge, and have formed four magnetic poles, for example the coil of built-up coil A is respectively 51,53,55, in 57 the groove, two cell walls are arranged between 51 and 53, and the magnetic pole on the living face of the magnetic of these two cell walls is exactly two identical magnetic poles, the N utmost point in this way, this N utmost point 51 and 53 common generations, the magnetic pole of giving birth on the face at the magnetic between 53 and 55 is exactly two S utmost points, and common generation is again the N utmost point between 55 and 57, common generation is exactly the S utmost point between 57 and 51, these four magnetic poles all are to be merged by two identical magnetic poles, and for the running outputting power that allows rotor not stop, the built-up coil of rotor must be used two groups, the direction of A group and B group exchanging electric current, the magnetic pole of rotor is rested between two magnetic poles of stator, can not get the balance of adhesive forever, two brushes contact one group of built-up coil all the time on commutator.

The rotor coil service efficiency height of this mode, and two identical magnetic poles are merged, increased the density of the magnetic line of force, improved the magnetic of electromagnetism, what this rotor adopted is the mode of mongline bidirectional conduction, is the very desirable solution of a kind of energy-saving effect, the unidirectional input current of rotor, the coil that has the different directions electric current is two groups does not respectively influence the electromagnetism generation, and can also strengthen the magnetic of electric current, improves the mechanical efficiency of DC motor.

Claims

1. multi-magnetic pole DC motor, comprise casing (1), be installed in the stator (2) in the casing (1), be installed in the rotor core (4) in the rotating shaft (3), be wrapped in this rotor core (4), make it produce the armature winding (5) of flux, be installed in the above-mentioned rotating shaft (3), transducer (6) to above-mentioned armature winding (5) power supply, it is characterized in that: described stator (2) has the magnetic pole more than two pairs at least, the described quantity that is wrapped in the coil of the armature winding (5) in this rotor core (4) is the twice of magnetic pole of the stator quantity, a plurality of coil spacings of described armature winding (5) are divided into two actuating coil groups, the magnetic field adjacent magnetic pole that the adjacent coil of each actuating coil group produces is identical, and the coil series connection back of each actuating coil group is electrically connected with the transducer (6) on being installed in rotating shaft (3).

2. multi-magnetic pole DC motor as claimed in claim 1 is characterized in that: described stator (2) is provided with two pairs of magnetic poles.

3. described multi-magnetic pole DC motor as claimed in claim 2 is characterized in that: the coil of described armature winding (5) is 8, and is divided into two actuating coil groups at interval.