CN1312832C

CN1312832C - Disk type motor

Info

Publication number: CN1312832C
Application number: CNB011442662A
Authority: CN
Inventors: 田且成
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2001-12-17
Filing date: 2001-12-17
Publication date: 2007-04-25
Anticipated expiration: 2021-12-17
Also published as: CN1427528A

Abstract

The present invention relates to a disc type electric machine which comprises salient pole type iron cores, a stator, a shaft and a rotor, wherein the salient pole type iron cores are made of magnetic materials, and have certain lengths. Coils are wound on the salient pole type iron cores by the stator, and the shaft which is perpendicular to the stator is arranged on the center position of the stator. The rotor is positioned in a confronting direction of the stator, is spaced for a definite distance, and is fixed at the other end of the shaft. A plurality of permanent magnets for generating S pole and N pole excitation are arranged on the rotor positioned on one side of the stator, and the salient pole type iron cores are arranged among the permanent magnets. An electric machine is thinned by the disc type electric machine of the present invention, magnetism increasing magnetic flux of the stator is used for enhancing a rotational magnetic field, and rotary force is further enhanced. The permanent magnets for generating S pole and N pole excitation are formed on the rotor, the salient pole type iron cores are arranged among the permanent magnets, and thus, costs are reduced. The salient pole type iron cores below the rotor are provided with needle-shaped structures, a stator coil is cooled when the disc type electric machine rotates, and the heat resistant ability of the disc type electric machine is enhanced to enhance electricity saving effects. Therefore, the disc type electric machine of the present invention can reduce material costs of the permanent magnets, enhance the rotary force and enhance cooling ability.

Description

Disk type motor

Technical field

The present invention relates to a kind of motor, particularly a kind of disk type motor.

Background technology

Fig. 1 a is the assembly drawing of original disk type motor.As shown in Figure 1, original disk type motor formation comprises, by the stator 1 that twines a winding 3 and an electromagnetic action on the salient pole type iron core 2 that certain-length is arranged by direction of principal axis, the iron core 2; Towards stator 1, the rotor of installing on disk 5 is installed the permanent magnet with ring-like S utmost point 4a and the multipole excitation of N utmost point 4b on its rotor 5; Revolving force is passed to the axle 6 of load.

Fig. 1 b is the plan structure figure of the rotor shown in Fig. 1 a.Shown in Fig. 1 b, the rotor 5 of original disk type motor is to be the center with central shaft 6, and its permanent magnet forms the annular multi-pole excitation of S utmost point 4a and N utmost point 4b.

Fig. 1 c is the plan structure figure of illustrated disk type motor stator 1 among Fig. 1 a; Shown in Fig. 1 c, the stator 1 of disk type motor is to have by direction of principal axis and the iron core 2 of the salient pole type of certain-length is arranged; Twine winding 3 on the iron core 2, its effect has been an electromagnetic action.

Fig. 2 is among Fig. 1 a, is radius with the permanent magnet center, by the end view drawing of direction of rotation cut-out.

As shown in Figure 2, disk type motor is the interaction owing to the magnetic flux 8 of permanent magnet 4a, the 4b generation of stator current 7 and rotor 5, and produces revolving force.

Fig. 3 shows the excitatory Reeb type curve chart of original disk type motor.

Among the figure, wave mode 10 is to show the electromagnetic force that produces on the above-mentioned disk type motor stator 1, and wave mode 9 is the excitatory power that shows that rotor 5 produces.Wave mode 11 is the excitatory power that shows that electromagnetic force 10 and excitatory power 9 are synthesized, and oblique line part 12 is the useful fluxs in the above-mentioned electromagnetic force 10.

Original this disk type motor has following shortcoming.Permanent magnet with ring-like S utmost point 4a and the multipole excitation of N utmost point 4b is installed on the rotor, so the manufacturing cost height; Be not suitable for being used on the many motors of number of poles, so the scope of application is restricted; Also have, existence can not change the problem of permanent magnet shape, and the shape that wherein changes permanent magnet is the method for the conversion rotation torque.During excitation, magnetic circle of permanent magnet is because of existing unexcited dead band, and therefore, the weight of permanent magnet is exported ratio relatively, has the shortcoming of waste material.

And, because the self-excitation excitation of original disk type motor is bigger, therefore increase the self-excitation excitation, the excitatory power of stator is utilized; Because heat release is limited in one's ability, therefore be subjected to the restriction of heavy load running.

Summary of the invention

Technical problem to be solved by this invention is for overcoming above-mentioned deficiency, a kind of slimming is provided, and that utilizes stator increases the magnetic magnetic flux, improves the disk type motor of revolving force.And, can cool off stator winding during the motor rotation, and then improve the temperature capacity of motor.

The technical solution adopted in the present invention is: a kind of disk type motor, include by magnetic material and constitute and have the salient pole type iron core of certain-length and the stator, stator center place of winding around is provided with on iron core and perpendicular to the axle of stator, be positioned at the stator faces direction and keep at a certain distance away and be fixed on the rotor of the other end of axle, the one side that is positioned at stator on the rotor is provided with at least one pair of permanent magnet that produces the S utmost point and N utmost point excitation, is provided with the salient pole type iron core between permanent magnet.

Among the present invention, the salient pole type iron core of rotor is that the rotation direction with rotor is a benchmark, is positioned at the permanent magnet anterior locations, utilizes general iron core and rotor one and is overrided to form by radial direction.

Disk type motor of the present invention is with the motor slimming, and that utilizes stator increases the magnetic magnetic flux, improves rotating magnetic field, and then improves revolving force.Between a plurality of permanent magnets of the S utmost point that forms on the rotor and N utmost point excitation and the above-mentioned permanent magnet iron core is installed, is reduced cost; And subtrochanteric salient pole type iron core has acicular texture, during the motor rotation, and the cooling stator coil, the temperature capacity of raising motor improves power saving effect with this.Therefore disk type motor of the present invention can reduce the material cost of permanent magnet, improves revolving force, and improves cooling capacity.

Description of drawings

Fig. 1 a is the assembly drawing of original disk type motor.

Fig. 1 b be among Fig. 1 a illustrated disk type motor rotor overlook structural map.

Fig. 1 c be among Fig. 1 a illustrated disk type motor stator overlook structural map.

Fig. 2 is among above-mentioned Fig. 1 a, is radius and the end view drawing that cuts off by direction of rotation with the permanent magnet center.

Fig. 3 is the excitatory Reeb deltoid figure that shows original disk type motor.

Fig. 4 a is the assembly drawing of disk type motor of the present invention.

Fig. 4 b is that the rotor of the disk type motor shown in Fig. 4 a is overlooked structural map.

Fig. 4 c is that the stator of the disk type motor shown in Fig. 4 a is overlooked structural map.

Fig. 5 is above-mentioned Fig. 4 a, is radius with the permanent magnet center, by the end view drawing of direction of rotation cut-out.

Fig. 6 is the excitatory Reeb deltoid figure that shows the above-mentioned disk type motor of the present invention.

Wherein:

1. stator 2. iron cores 3.

coil

4a, 16a. the S utmost point 4b of permanent magnet, 16b. the permanent magnet N

utmost point

5,18. 6. 7 of rotors, 20. stator current 8,21. the increase portion that increases magnetic pumping 26.24 of excitatory power 10,23. stator electromagnetic forces 11,24 synthetic excitatory power 25. useful fluxs of excitatory power 12. useful fluxs 17. iron cores, 22. rotor fluxs of magnetic flux 9. rotors.

Embodiment

Following with reference to accompanying drawing, disk type motor of the present invention is described.

Shown in Fig. 4 a, disk type motor formation of the present invention comprises, have to have and twine winding 3 on the salient pole type iron core 2 of certain-length and the iron core 2 and play the stator 1 of electromagnetic action, perpendicularly at the center of stator 1 be provided with axle 6, be positioned at stator 1 faces direction by the driving shaft direction, and have certain distance, form at least one pair of permanent magnet of S utmost point 16a and N utmost point 16b excitation; The round rotor 18 of salient pole type iron core 17 is installed between permanent magnet, with the revolving force of above-mentioned rotor 18 formations such as axle 6 to load transfer.

Shown in Fig. 4 b, the rotor 18 of disk type motor of the present invention is to be the center with axle 6, forms a plurality of permanent magnets of S utmost point 16a and N utmost point 16b excitation, forms ring-like excitation at regular intervals.Rotor 18 and salient pole type iron core 17 are integrally formed the magnetic material compression.

Salient pole type iron core 17 is at permanent magnet 16a, between the 16b, is benchmark with the direction of rotation of rotor 18, is positioned at permanent magnet 16a, the anterior locations of 16b.The iron core 17 of rotor 18 is that general iron core and rotor 18 are one-body molded, laminates formation by radial direction.

Shown in Fig. 4 c, the stator 1 of disk type motor is by direction of principal axis and has the salient pole type iron core 2 of certain-length that winding around 3 on the iron core 2, play electromagnetic action.

As shown in Figure 5, disk type motor of the present invention is the electric current 20 of stator 1 and the permanent magnet 16a of rotor 18, and the interaction of the magnetic flux 21 that produces in the 16b produces revolving force.

As Fig. 4 b and shown in Figure 5, the iron core 17 of rotor 18 is positioned at permanent magnet 16a, between the 16b, forms one with the bottom of rotor 18, and is benchmark with the direction of rotation of rotor 18, is positioned at permanent magnet 16a, the anterior locations of 16b.

As shown in Figure 6, wave mode 23 is the electromagnetic forces that show that stator 1 produces; Wave mode 22 is the excitatory power of magnetic flux that shows that rotor 18 produces.Also have, wave mode 24 is the synthetic excitatory power of the excitatory power of electromagnetic force 23 and magnetic flux 22, and what oblique line part 25 showed useful flux in the above-mentioned electromagnetic force 23 increases the excitatory power of magnetic.Here, the waveform of the synthetic excitatory power that disk type motor of the present invention produces is, because the permanent magnet 16a of rotor 18, the salient pole type iron core 17 that the 16b side has, the excitatory power of its magnetic flux 22 and to increase magnetic force 25 synthetic, the synthetic excitatory power 24 increase portions 26 of formation are its waveform.And the salient pole type iron core 17 of rotor 18 is a needle-like, when motor rotates, and cooling stator coil 3, and then improve the heat release ability.

Claims

1. disk type motor, include by magnetic material and constitute and have the salient pole type iron core (2) of certain-length and go up the stator (1) of winding around (3) at iron core (2), that stator (1) center is provided with and perpendicular to an end of the axle (6) of stator (1), be positioned at stator (1) opposite and be separated with distance with it and be fixed on the rotor (18) of the other end of axle (6), a side that is positioned at stator (1) on the rotor (18) is provided with at least one pair of permanent magnet that produces the S utmost point (16a) and the N utmost point (16b) excitation, between permanent magnet, be provided with salient pole type iron core (17), it is characterized in that, the salient pole type iron core (17) of rotor (18) is that the direction of rotation with rotor (18) is a benchmark, be positioned at permanent magnet (16a, front position 16b), and laminate by radial direction and to form iron core (17) and be the structure of one with rotor (18), the salient pole type iron core (17) of rotor (18) is an acicular texture.