CN2646948Y

CN2646948Y - Shift tapping speed regulating single-phase asynchronous motor

Info

Publication number: CN2646948Y
Application number: CN 03247427
Authority: CN
Inventors: 鲁楚平
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2003-06-17
Filing date: 2003-06-17
Publication date: 2004-10-06
Anticipated expiration: 2013-06-17

Abstract

A shift tapping speed regulation single-phase asynchronous motor comprises a stator, a rotor and an outer shell of motor, wherein, the stator comprises a stator iron core 1, a first basic winding 2, a second basic winding 3, a speed regulation winding 4 and a capacitance. The first basic winding 2, the second basic winding 3 and the speed regulation winding 4 are embedded into a stator slot 5 of the stator iron core 1. The first basic winding 2 and the speed regulation winding 4 are winded together, wherein, the first basic winding 2 comprises a plurality of windings and the speed regulation winding 4 comprises two or more windings. The first winding of the first basic winding 2 and the windings of the speed regulation winding 4 are staggered in different stator slot 5 to reduce mutual interference, thereby greatly reducing performance variation in run state of motor, fault rate of winding space and short circuit among lines and improving percent of pass. The short circuit fault is effectively avoided and the reliability of product is improved. The percent of pass examined from 20 ten thousand produced motors is improved by 15 percent.

Description

Displacement tap speed governing monopole asynchronous motor

1, technical field:

The utility model relates to displacement tap speed governing monopole asynchronous motor.

2, background technology:

At present, single-phase asynchronous motor is used very extensive in industrial and mining enterprises, science and education health and household electrical appliance.Various use occasions, also more and more higher to such electric machine speed regulation performance demands, adopt stator winding tap mode of speed regulation, usually occupy significant proportion, at this moment, be placed with main winding A, auxiliary winding B or short circuit copper ring and speed governing winding C in the motor stator slot, by changing the coupling method of speed governing winding C and main winding A or pair winding B, adjust motor gas-gap magnetic field size and ovality, thereby realize the purpose of speed governing.Below in conjunction with Fig. 1, Fig. 2, Fig. 3 elaborates to the principle and the structure thereof of monopole asynchronous motor speed governing, as shown in Figure 2, it is to be that example explains with one four utmost point monopole asynchronous motor, main winding A, auxiliary winding B is made of each 4 coils, by speed governing winding C of series connection on auxiliary winding B, the number of turn that changes auxiliary winding B coil reaches the purpose of speed governing, traditional specification requirement is that speed governing winding C also is divided into 4 coils, 4 coils with auxiliary winding B are wound on jointly respectively, speed governing winding C is with in auxiliary winding B embeds identical stator slot, there are following defective in this structure and connected mode: the head of speed governing winding C links to each other with the tail of auxiliary winding, thereby with having linked end to end in the same groove of auxiliary winding B, the interference that produces is bigger mutually, causes short circuit in winding to burn the machine fault and significantly rises, and general fraction defective is everlasting between 6%～20%, running reliability of motor descends, both increase the manufacturing cost of enterprise, also influenced the market competitiveness of main frame, and also brought a lot of inconvenience for consumers in general.Between the main winding A and auxiliary winding B as for independent coiling respectively, can place in the different stator slots, it is very little to produce above-mentioned phenomenon chance, as Fig. 3, Fig. 4, shown in Figure 5, four coils of main winding A are embedded into respectively in stator slot C13, C16, C1, C4, C5, C8, C9, the C12, four coils of auxiliary winding B are embedded into respectively in stator slot C15, C2, C3, C6, C7, C10, C11, the C14, but, just produce above-mentioned problem when speed governing winding C and the common coiling of auxiliary winding B and place in the same stator slot.

3, summary of the invention:

The purpose of this utility model provides displacement tap speed governing monopole asynchronous motor, it is by first basic winding of coiling and the coil between the speed governing winding spatially are shifted together, promptly the first coil of the first basic winding places different stator slot the insides with each coil of speed governing winding, reduce the phase mutual interference, effectively avoid short circuit in winding to burn the machine fault, increase product reliability.

The utility model is achieved by the following technical solution: it comprises stator, rotor and motor housing, wherein stator is by stator core, the first basic winding, the second basic winding, speed governing winding and electric capacity are formed, the first basic winding, the second basic winding, the speed governing winding is embedded in the stator slot the inside of stator core, the first basic winding is wound on jointly with the speed governing winding, the first basic winding is made up of a plurality of coils, the speed governing winding is made up of two or more coils, and the first coil of the first basic winding and each coil of speed governing winding are not in same stator slot the inside.

Second coil of the above-mentioned described first basic winding staggers in different stator slots the inside with each coil of speed governing winding.

The above-mentioned described first basic winding can be the motor main winding, and the second basic winding can be the motor auxiliary winding.

The above-mentioned described first basic winding can be the motor auxiliary winding, and the second basic winding can be the motor main winding.

The utility model compared with prior art has following advantage: it is by first basic winding of coiling and the coil between the speed governing winding spatially are shifted together, promptly the first coil of the first basic winding places different stator slot the insides with each coil of speed governing winding, reduce the phase mutual interference, performance variation when having reduced the motor operation greatly, reduce the failure rate of winding inter-turn, short-circuit between conductors, increase substantially product percent of pass.Effectively avoid short circuit to burn the machine fault, improve product reliability, through 200,000 motors that the selective examination statistics is produced, product percent of pass improves 15%.

4, description of drawings:

Below in conjunction with accompanying drawing the utility model is done detailed explanation:

Fig. 1 is the circuit diagram of traditional tap speed governing monopole asynchronous motor;

Fig. 2 is the schematic diagram after speed governing winding and the common coiling of auxiliary winding;

Fig. 3 is the stator core sectional view of four utmost point monopole asynchronous motors;

Fig. 4 is that traditional tap speed governing monopole asynchronous motor main winding is wound on the expanded view on the stator core;

Fig. 5 is that traditional tap speed governing monopole asynchronous motor auxiliary winding is wound on the expanded view on the stator core;

Fig. 6 is a kind of four utmost point motors, first basic winding of the present utility model is connected coiling with the speed governing winding a schematic diagram;

Fig. 7 is the expanded view of the first basic winding technique on stator core among Fig. 6;

Fig. 8 is the expanded view of speed governing winding technique on stator core among Fig. 6;

Fig. 9 is a kind of 6-pole motor first basic winding of the present utility model is connected coiling with the speed governing winding a schematic diagram;

Figure 10 is an electrical schematic diagram of the present utility model.

5, embodiment:

As Fig. 6, Fig. 7, Fig. 8, shown in Figure 10, the utility model comprises stator, rotor and motor housing, wherein stator is by stator core 1, the first basic winding 2, the second basic winding 3, speed governing winding 4 and electric capacity are formed, the first basic winding 2, the second basic winding 3, speed governing winding 4 is embedded in stator slot 5 the insides of stator core 1, the first basic winding 2 is wound on jointly with speed governing winding 4, the first basic winding 2 is made up of a plurality of coils, speed governing winding 4 is made up of two or more coils, and the first coil of the first basic winding 2 staggers in different stator slots 6 the insides with each coil of speed governing winding 4.Each coil of speed governing winding 4 is even distribution 5 li of stator slots, the first basic winding 2 can be the motor main winding, the second basic winding 3 can be the motor auxiliary winding, and the first basic winding 2 can be the motor auxiliary winding, and the second basic winding 3 can be the motor main winding.

As Fig. 3, Fig. 7, shown in Figure 8, the first coil of the first basic winding 2 is in the C15 groove and the C2 groove of stator slot 5, A1 is the head of the first basic winding 2 among Fig. 7, a1 is the tail of the first basic winding 2, second coil is around the C3 groove and the C6 groove of stator slot 5, the 3rd coil is around the C7 groove and the C10 groove of stator slot 5, the 4th coil is around the C11 groove and the C14 groove of stator slot 5, and first coil of speed governing winding 4 and second coil are with second coil coiling of the first basic winding 2 and be positioned at the C3 groove and the C6 groove of stator slot 5, the 3rd coil of speed governing winding 4 and the 4th coil are with the 4th coil coiling of the first basic winding 2 and be positioned at the C11 groove and the C14 groove of stator slot 5, the first coil that reduces the first basic winding places different stator slots 5 the insides with the coil of speed governing winding, effectively avoid short circuit in winding to burn the machine fault, increase product reliability.

As shown in Figure 9, it is the connection diagram of winding of the displacement tap speed governing monopole asynchronous motor of 8 utmost points, and the first basic winding 2 first coils stagger in different stator slots 5 the insides with second coil and each coil of speed governing winding 4.In order further to reduce to disturb, second coil of the first basic winding 2 staggered in different stator slots 5 the insides with each coil of speed governing winding 4.

Claims

1, displacement tap speed governing monopole asynchronous motor, comprise stator, rotor and motor housing, wherein stator is by stator core (1), the first basic winding (2), the second basic winding (3), speed governing winding (4) and electric capacity are formed, the first basic winding (2), the second basic winding (3), speed governing winding (4) is embedded in stator slot (5) the inside of stator core (1), the first basic winding (2) is wound on jointly with speed governing winding (4), the first basic winding (2) is made up of a plurality of coils, speed governing winding (4) is made up of two or more coils, it is characterized in that the first coil of the first basic winding (2) staggers in different stator slots (5) the inside with each coil of speed governing winding (4).

2, displacement tap speed governing monopole asynchronous motor according to claim 1 is characterized in that second coil of the first basic winding (2) staggers in different stator slots (6) the inside with each coil of speed governing winding (4).

3, displacement tap speed governing monopole asynchronous motor according to claim 1 and 2 is characterized in that the first basic winding (2) and each coil of speed governing winding (4) are to be symmetrically distributed along stator slot (5).

4, displacement tap speed governing monopole asynchronous motor according to claim 1 and 2 is characterized in that the first basic winding (2) can be the motor main winding, and the second basic winding (3) can be the motor auxiliary winding.

5, displacement tap speed governing monopole asynchronous motor according to claim 1 and 2 is characterized in that the first basic winding (2) can be the motor auxiliary winding, and the second basic winding (3) can be the motor main winding.