CN2160165Y

CN2160165Y - Single or three phase dual asgnchronous motor

Info

Publication number: CN2160165Y
Application number: CN 92240878
Authority: CN
Inventors: 孙学政; 高连生; 王志长; 刘贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-30
Filing date: 1992-11-30
Publication date: 1994-03-30
Anticipated expiration: 2002-11-30

Abstract

The utility model belongs to an AC asynchronous motor. The winding of the ac asynchronous motor is a single and double layer mixed winding whose coils have different number of turns and are in sine distribution; the ratio of the sections of the conducting wires of the main winding and the secondary winding of the ac asynchronous motor is 1: 2; the ratio of the number of turns of the main winding and the secondary winding is 1: 1.1. The wiring of the ac asynchronous motor is formed by that a wiring piece, a capacitor the connected position of a switch on a circuit board; therefore, the connection mode of six wire winding terminals are changed so that the six wire winding terminals are in three phase connection and single phase triangular connection. Thus, the AC asynchronous motor can be adapted to the phase number and the voltage of different power supplies; machines which are matched with the AC asynchronous motor are not limited by the phase number of a power supply in the field can be connected with a three phase or a single phase power supplies. The utility model has the advantages of convenient operation and multifunction.

Description

Single or three phase dual asgnchronous motor

The utility model belongs to a kind of AC asynchronous motor, relates to a kind of single, dual-purpose asynchronous motor of three-phase.

Existing asynchronous motor is distinguished from the power supply number of phases: monopole asynchronous motor and threephase asynchronous two classes are arranged.Its structure is mainly by support, band winding stator, compositions such as cast-aluminum rotor, bearing, terminal block.When single-phase or three-phase alternating current is fed winding on the stator by terminal block, produce rotating magnetic field at stator core, cast-aluminum rotor is stressed output mechanical force distance in magnetic field.But single-phase motor adopts positive chorded winding, only can use in the place of single phase poaer supply; Threephase motor adopts three-phase symmetric winding, only can use in the place of three phase mains.This just makes ambulant electronic product need dispose two motors, otherwise has limited the scope of application of this electronic product.

The purpose of this utility model provides a kind ofly can be satisfied with the required motor of mobility electronic product, and under the different number of phases voltage of power supply, (single-phase 220 volts or three-phase 380 volts) can both adapt to work.

The purpose of this utility model realizes by following scheme: single, the dual-purpose asynchronous motor winding of three-phase adopts: the single, double layer of circle coils such as Sine distribution is non-mixed winding, its main section ratio of paying winding conducting wire is 1:2, and the main effective turn of winding of paying is than being 1:11; Its wiring is adopted: directly change the link position of lug plate on the terminal block, electric capacity, switch on demand, thereby change the connected mode of six wire wrap terminals, its three-phase bifurcation is connect, single-phase △ connects, and can reach to be suitable for different power supply number of phases voltage.

Fig. 1 is the utility model profile and inner critical piece pie graph;

Terminal block wiring shape figure when Fig. 2 works in three phase mains for the utility model

Fig. 3 is single-phase terminal block wiring shape figure when just changeing for the utility model works in

Fig. 4 is terminal block wiring shape figure during single-phase reverse for the utility model works in

Reaching specific embodiment in conjunction with the accompanying drawings is described as follows:

In Fig. 1,1 is axle, and 2,9 is end cap, and 3 is bearing, and 4 is centrifugal switch, and 5 is terminal box, and 6 is electrolytic capacitor, 7 stators for band winding 13, and 8 is cast-aluminum rotor, and 10 is fan housing, and 11 is fan, and 12 is support.Single, the dual-purpose asynchronous motor of three-phase is different from one of common motor and is: adopt the non-circle coil list two-layer hybrid winding that waits of Sine distribution for the design of winding 13, main to pay a winding conducting wire section ratio be 1:2, and a main pair winding effective turn compares 1:11.This winding configuration makes it when threephase motor moves, because its three phase windings impedance is in a basic balance, meets the threephase motor service conditions, so can normally move.And when single-phase motor moved, because electric current is bigger, 2 times of sectional areas paying phase winding were to the principal phase winding, so this phase winding also can normally move.

In Fig. 2,14 is that terminal block, 15 is work metallic film dielectric capacitor for lug plate, 16 for binding post, 17.U ₁-U ₂, V ₁-V ₂Be main winding terminal sign, W ₁-W ₂For paying winding terminal sign.Terminal block is contained in the terminal box 5, and lug plate 15 is the metallic conduction sheet.With wire wrap terminal sign W ₂, U ₂, V ₂Be fixed on the binding post 16, with two lug plates 15 their polyphones joined, at wire wrap terminal sign W ₂, U ₂Between be connected with mutually the electrolytic capacitor 6 and the centrifugal switch 4 of polyphone, wire wrap terminal sign U ₁, V ₁Between be connected to capacitor 17, U ₁, V ₁, W ₁Connect the 380V supply socket, can make the utility model do the threephase motor operation in 380V voltage.

In Fig. 3, six wire wrap terminal signs are connected on respectively on six binding posts 16, and two ends and wire wrap terminal sign W2, U2 after capacitor 6 and centrifugal switch 4 serial connections are connected in parallel with capacitor 17 again join.Here capacitor 6 and centrifugal switch 4 are starting elements of single-phase motor, can improve its starting performance, and capacitor 17 can improve the power of electric motor factor.To indicate W with three lug plates 15 ₂-U ₁, U ₂-V ₁And V ₂-W ₁Link to each other in twos, again with U ₁, W ₁Connect the 220V supply socket, can make the utility model do the single-phase motor operation of just changeing in 220 voltages.

In Fig. 4, during as need single-phase motor inverted running, the two ends after capacitor 6 and switch 4 serial connections are connected in parallel with capacitor 17 again with around around terminal sign U ₂V ₂Join, will indicate W with three lug plates 15 ₂-U1, U ₂-V ₁And V ₂-W ₁Link to each other in twos, again with U ₁W ₁Connect 220 volts of supply sockets, even the utility model is done single-phase motor with reciprocating movement operation in 220 volts of voltages.

After adopting the utility model, the machinery that matches is not with it limited by the number of phases of field power supply all, can connect easily with three-phase or unidirectional power supply by physical condition, all can reach specified output and make operation continuously.Especially in the open site operation, mobile engineer operation is the most convenient favourable, and a tractor serves several purposes is for the user reduces equipment investment.This utility model starting performance is good simultaneously, the overload capacity height., line voltage little at power supply capacity falls greatly, still starting easily under the situation that terminal voltage is on the low side.Its energy index height all can utilize the capacitor end points compensation on the spot of self when list, three-phase operation in addition, improves power factor (PF), electrical energy saving.

Claims

1, a kind of single, dual-purpose asynchronous motor of three-phase, form by support, band winding stator, cast-aluminum rotor, bearing, terminal block etc., it is characterized in that: winding (13) adopts: the non-single, double layer of the circle coil mixed winding that wait of Sine distribution, its main section ratio of paying winding conducting wire is 1: 2, and the main effective turn ratio of paying winding is 1: 1.1; Its wiring is adopted: directly change the link position that terminal block (14) is gone up lug plate (15), electric capacity (6,17), switch (4) on demand, thereby change the connected mode of six wire wrap terminals, its three-phase bifurcation is connect, single-phase △ connects.

2, single, the dual-purpose asynchronous motor of three-phase according to claim 1 is characterized in that: when 380V voltage is done the threephase motor operation, with wire wrap terminal sign W ₂, U ₂, V ₂Be fixed on the binding post (6), with two lug plates (15) their polyphones joined, at wire wrap terminal sign W ₂, U ₂Between be connected with mutually the electrolytic capacitor (6) and the centrifugal switch (4) of polyphone, wire wrap terminal sign U ₁, V ₁Between be connected to capacitor (17), U ₁, V ₁, W ₁Connect the 380V supply socket.

3, single, the dual-purpose asynchronous motor of three-phase according to claim 1, it is characterized in that: 220 volts of voltage is done single-phase when just changeing the motor operation, and capacitor (6) and centrifugal switch (4) are connected in series two ends and the wire wrap terminal sign W after being connected in parallel with capacitor (17) again ₂, U ₂Join, will indicate W with three lug plates (15) ₂-U ₁, U ₂-V ₁And V ₂-W ₁Link to each other in twos, again with U ₁, W ₁Connect the 220V supply socket.

4, single, the dual-purpose asynchronous motor of three-phase according to claim 1, it is characterized in that: when 220 volts of voltages are done single-phase motor with reciprocating movement operation, capacitor (6) and switch (4) are connected in series two ends and wire wrap terminal sign V after being connected in parallel with capacitor (17) again ₂, U ₂Join, will indicate W with three lug plates 15 ₂-U ₁, U ₂-V ₁, and V ₂-W ₁Link to each other in twos, again with U ₁W ₁Connect 220 volts of supply sockets.