CN101924439B

CN101924439B - Novel direct-current motor

Info

Publication number: CN101924439B
Application number: CN2010102250677A
Authority: CN
Inventors: 李新潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-13
Filing date: 2010-07-13
Publication date: 2012-03-21
Anticipated expiration: 2030-07-13
Also published as: CN101924439A

Abstract

The invention provides a novel direct-current motor mainly comprising stators and rotors. The stators comprise ring-shaped stators and a centre stator (19), wherein the ring-shaped stators are fixed on the inner wall of a motor shell (3) and comprise an N-pole ring-shaped stator (1) and an S-pole ring-shaped stator (2); the centre stator (19) comprises two cylindrical magnets and a centre stator central excitation winding (6) between the two magnets; the two magnets of the centre stator (19) correspond to the ring-shaped stators in position and have same polarity; two circular ring-shaped rotors (14) are arranged between the ring-shaped stators and the centre stator (19); rotor armature windings (8) are distributed on the rotors (14); the rotors (14) and the centre stator (19) are respectively fixed on a motor end cover (13) via a stator shaft disk (12) and a centre shaft (23); an output shaft (17) is arranged at one end of a rotor fixing disk (11). The motor has the advantages of simple structure and wide speed adjustable range.

Description

A kind of Novel DC motor

Technical field

The utility model provides a kind of New-type electric machine, especially a kind of electrodeless direct current machine.

Background technology

Traditional direct current machine is that closing coil is arranged between adjacent the N utmost point and the S utmost point, under effect of DC; Coil is made periodical rotation, and the magnetic flux generating period property variation through coil has produced back electromotive force; Along with rotating speed of motor improves, the also corresponding increase of back electromotive force, the electric current in the coil reduces gradually; After rotating speed of motor is stable, also certain through the electric current of coil.Not enough below this traditional direct current machine exists: one, the actual service efficiency of motor is lower, generally is between 70% one 80%; The reversing arrangement that two, electric current will be arranged, reversing arrangement need often to change because carbon brush is easy to wear, and it is excessive to load sometimes, and motor commutation effect difficulty is easy to generate spark; Three, motor around coil many, complex structure, manufacture process requirement is also high, the price of motor is higher; Four, motor is done periodic rotary, produces certain frequency, and vibrations are big, and noise is also big.

Summary of the invention

It is simple relatively to the purpose of this invention is to provide a kind of structure, and speed adjustable range is wide, the Novel DC motor that service efficiency is high.

For reaching above purpose; A kind of Novel DC motor comprises stator, rotor, motor housing, output shaft and motor base, it is characterized in that stator comprises annular stator and central stator; Annular stator is fixed on the motor housing inwall; Be divided into N polar ring shape stator and S polar ring shape stator, central stator comprises the central stator central excitation winding between two cylinder-shaped magnets and two magnet on the central shaft of motor; Two magnet positions of central stator are corresponding with two annular stators, and the polarity of two magnet is identical with corresponding annular stator; The rotor that two annulars are arranged between annular stator and central stator; Two rotors are serially connected through the rotor fixed disk; Lay respectively between annular stator and the central stator; Distribution rotor armature winding on the rotor, rotor and central stator are fixed on the electric motor end cap through rotor fixed disk and central shaft respectively, at an end of rotor fixed disk an output shaft are arranged.

Be fixed rotor armature winding, the rotor winding conducting wire of the inside and outside both sides of rotor annulus is embedded in respectively in the parallel slot that the inside and outside both sides of rotor vertically distribute.

Random synthetic for reducing the rotor internal magnetic field as far as possible; Resultant magnetic field in the rotor is limited; Rotor has 2-5 rotor separation trough along the radial direction of annulus; The rotor separation trough extends longitudinally to the other end of rotor, and rotor is divided into the 3-6 equal portions, fills non-magnet material in the rotor separation trough.Make each equal portions form degaussing loop separately.

Adopt the direct current machine of above structure; Because the lead of the inside and outside both sides of rotor armature winding receives force direction identical all the time; The speed of rotor and the size of current through the armature rotor winding conducting wire are directly proportional like this, promptly control the speed of rotor with the size of current that flows through the rotor winding conducting wire; Because the winding conducting wire with same current direction all rotates under same polarity magnetic field all the time, need not engine commutator, practiced thrift valuable copper metal; Rotor and stator structure are simple, and cost is low; In addition, do not produce phase place during machine operation, do not produce frequency, the vibrations of motor are little.

Below in conjunction with accompanying drawing the present invention is done further explain.

Description of drawings

Fig. 1 is a direct current machine cutaway view of the present invention

Fig. 2 is that the C-of Fig. 1 is to view

Fig. 3 is that the D-of Fig. 1 is to view

Fig. 4 is the outer groove plane outspread drawing of rotor

1, N polar ring shape stator, 2, S polar ring shape stator, 3, shell, 4, base, 5, the annular stator excitation winding; 6, central stator central excitation winding, 7, the current collection slip ring, 8, the armature rotor winding, 9, the motor outer bearing, 10, the motor inner bearing; 11, rotor fixed disk, 12, the stator reel, 13, end cap, 14, rotor, 15, fan; 16, fixed gear, 17, output shaft, 18, the rotor separation trough, 19, central stator, 20, preformed hole; 21, carbon brush bar, 22, parallel slot, 23, central shaft, 24, winding conducting wire, 25, base wad.

Specific embodiment

Like Fig. 1, Fig. 2 and shown in Figure 3; The electrodeless direct current machine of the utility model comprises cylinder blanket 3; The two ends of shell 3 are end cap 13, and the inwall of motor housing 3 is fixed two annular stators, and annular stator is separated by a distance; Distance confirms that according to the size of power of motor and the condition of coil heat radiation the distance between two annular stators of high-power motor is also big.Stator excitation winding 5 is arranged on each annular stator; Two stator excitation windings 5 are respectively N polar ring shape stator 1 and S polar ring shape stator 2; There is a central shaft 23 in central authorities at motor housing 3, and two identical cylinder-shaped iron cores are arranged on the central shaft 23, on the central shaft 23 between two iron cores central stator central excitation winding 6 are arranged; Form central stator 19; Two iron core positions of central stator 19 are corresponding with annular stator, and the polarity of two iron cores is identical with the polarity of outer corresponding annular stator, all is the N utmost point or the S utmost point.The rotor 14 that two annulars are arranged between annular stator and central stator 19; Two rotors 14 are cascaded through rotor fixed disk 11; Have armature rotor winding 8 on rotor 14 annulus, as shown in Figure 4, along the inside and outside both sides of rotor 14 annulus some parallel slots 22 are arranged vertically; The winding conducting wire 24 of armature rotor winding 8 is embedded in respectively in each parallel slot 22, and winding conducting wire 24 head and the tail in medial and lateral connect.Synthetic regularly for reducing the motor magnetic field that armature rotor winding 8 forms when the work, make the motor can operate as normal, the resultant magnetic field of motor is limited; Radial direction at rotor 14 annulus has 2-5 rotor slot segmentation 18; Rotor separation trough 18 extends longitudinally to the other end of rotor 14, and rotor 14 is divided into the 3-6 equal portions, fills non-magnet material in the separation trough 18 between every equal portions; Promptly rotor 14 is separated with the non-magnetic material; To increase the mechanical strength of rotor 14, make the every equal portions in the rotor 14 form degaussing loop separately, limited that electric current causes influencing each other of rotor 14 resultant magnetic fields in the armature rotor winding 8.Winding conducting wire 24 for fixed rotor 14 two ends; The base wad 25 that a non-magnet material is all arranged at each rotor 14 two ends; Winding conducting wire 24 is pooled to the preformed hole 20 on the rotor fixed disk 11 through base wad 25, is connected with carbon brush bar 21 with current collection slip ring 7 through preformed hole 25, and then is connected with external power.Winding conducting wire 24 is when passing through rotor fixed disk 11; The winding conducting wire 24 of adjacent two or three above parallel slots 17 can be concentrated and pass a preformed hole 25; The quantity of preformed hole 25 can not be too many on the rotor; On rotor fixed disk 11, evenly distribute, and the quantity of preformed hole 25 is even number the influence that the winding conducting wire 24 of merging is cancelled out each other main field is caused between the winding conducting wire 24 when passing the preformed hole 25 of rotor fixed disk 11.

Rotor 14 is fixed between the inner bearing 10 and outer bearing 9 on the end cap 13 through rotor fixed disk 11; An output shaft 17 is arranged on the rotor fixed disk 11 of motor one end; Output shaft 17 rotates with rotor 14 synchronously; Motor center stator 19 passes the inner bearing of electric motor end cap 13 through central shaft 23, wherein extends away from the central shaft 23 of output shaft 17 1 ends and passes rotor fixed disk 11, is fixed on the stator reel 12 through fixed gear 16.Radiating rate during for the increase machine operation at the fixing fan 15 of an end of rotor fixed disk 11, rotates the other end fixed set electric slip ring 7 and the carbon brush bar 21 of rotor fixed disk 11 synchronously with rotor 14.Whole motor fixes through base 4.

Claims

1. Novel DC motor; Comprise stator, rotor, motor housing, output shaft and motor base; It is characterized in that stator comprises annular stator and central stator, annular stator is fixed on motor housing (3) inwall, is divided into N polar ring shape stator (1) and S polar ring shape stator (2); Central stator (19) is on the central shaft (23) of motor; Comprise the central stator central excitation winding (6) between two cylinder-shaped magnets and two magnet, two magnet positions of central stator (19) are corresponding with two annular stators, and the polarity of two magnet is identical with corresponding annular stator; The rotor (14) that two annulars are arranged between annular stator and central stator (19); Two rotors (14) are serially connected through rotor fixed disk (11); Lay respectively between annular stator and the central stator (19); Rotor (14) is gone up distribution rotor armature winding (8), and rotor (14) and central stator (19) are fixed on the electric motor end cap (13) through rotor fixed disk (11) and central shaft (23) respectively, at an end of rotor fixed disk (12) output shaft (17) is arranged.

2. direct current machine according to claim 1 is characterized in that the rotor winding conducting wire (24) of rotor (14) the inside and outside both sides of annulus is embedded in respectively in the vertical parallel slot (22) that distributes in the inside and outside both sides of rotor (14).

3. direct current machine according to claim 2 is characterized in that the shape of parallel slot (22) is consistent with size, and evenly distributes in the inside and outside both sides of rotor (14).

4. direct current machine according to claim 1; It is characterized in that rotor (14) has 2-5 rotor separation trough (18) along the radial direction of annulus; Rotor separation trough (18) extends longitudinally to the other end of rotor (14); Rotor (14) is divided into the 3-6 equal portions, fills non-magnet material in the rotor separation trough (18).

5. direct current machine according to claim 1 is characterized in that having on the rotor fixed disk (11) preformed hole (20) of one group of winding conducting wire (24).

6. direct current machine according to claim 5 is characterized in that the quantity of preformed hole (20) is even number, and is evenly distributed on the rotor fixed disk (11).