CN2151576Y

CN2151576Y - Convertible single-phase series exited motor

Info

Publication number: CN2151576Y
Application number: CN 93207426
Authority: CN
Inventors: 冯广荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-20
Filing date: 1993-03-20
Publication date: 1993-12-29
Anticipated expiration: 2003-03-20

Abstract

The utility model relates to a convertible single-phase alternate-current series existed motor. The utility model is characterized in that a stator winding is composed of four windings, two windings are wound on one side of the stator through a double-wire parallel wound mode, the other two windings are wound on the other side of the stator, after the windings of the both sides are respectively connected in series according to an opposite connecting mode, one end of the windings are connected with one end of a rotor, the other end can externally connected with a reversing control circuit, and the motor is conveniently converted. The utility model has the outstanding advantages that the starting torque of the convertible single-phase alternate-current series existed motor is larger than that of a capacitance motor, and when the convertible single-phase alternate-current series existed motor and the capacitance motor have equal power, the weight of the convertible single-phase alternate-current series existed motor only is about 1/5 of the capacitance motor, and the price of the convertible single-phase alternate-current series existed motor is cheaper than that of the capacitance motor. The motor having large starting torque and convenient reversing is in particular suitable for the automatic control system of the household electrical appliance.

Description

Convertible single-phase series exited motor

The utility model is a kind of load motor, particularly a kind of reversible single phase alternating current (A.C.) series excited machine.

The single phase alternating current (A.C.) reversible electric machine that existing reversible load motor is the capacitor operating type mostly, the deficiency of this motor is that staring torque is very little, general only is about 0.6 of its nominal torque, this class motor load mostly is the mechanicalness load greatly, the stiction of common mechanical mechanism is greater than kinetic force of friction, require the staring torque of motor bigger better, therefore, capacitor motor is not ideal enough.Be generally and obtained necessary staring torque, had to the power of motor is strengthened, like this, it is heavy that motor becomes, and price improves.

The staring torque of single phase alternating current (A.C.) series excited machine is much bigger, and the deficiency that this has just in time overcome above-mentioned capacitor motor has adapted to mechanically activated requirement.But this motor only is used for the occasion of unidirectional running usually, and is cumbersome because of its mode that changes direction of rotation, makes control circuit become complicated, so generally seldom use.

The purpose of this utility model provides and had a kind ofly both kept the big staring torque of series excited machine, and its reversing mode resembles the simple single phase alternating current (A.C.) series excited machine that reverses the capacitor motor.

This reversible single phase alternating current (A.C.) series excited machine, it is by brush (1), brush carriage (2), lug plate (3), commutator (4), support (5) and (7), stator (6), rotor (8), winding (9) constitutes, and the winding (9) on the stator (6) is by four winding (L ₁), (L ₁'), (L ₂), (L ₂') form; Winding (L ₁) and (L ₁') two-wire and around stator (6) one sides, winding (L ₂) and (L ₂') two-wire and around the opposite side of stator (6); Winding (L ₁) and (L ₂) switch through an end of son (8), winding (L after the series connection ₁') and (L ₂') by relative winding (L ₁) and (L ₂) switch through the same end of son (8) after the series connection of opposite connected mode; A RC network is gone up also and connect to rotor (8).

The utility model has following accompanying drawing:

Fig. 1 is an overall structure schematic diagram of the present utility model.

Fig. 2 is a vertical structure schematic diagram of the present utility model.

Fig. 3 is a kind of mode of connection electricity principle schematic of the present utility model.Be a kind of embodiment.

Fig. 4 is the commutation electricity principle schematic of capacitor motor.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

Support of the present utility model (5) and (7) are linked to be an integral body to stator (6) and rotor (8), and the stator winding (9) that two windings of former cause are formed makes into by (L ₁), (L ₁'), (L ₂), (L ₂') four windings form; Winding (L ₁) and (L ₁') two-wire and around the left side that is placed on stator (6), winding (L ₂) and (L ₂') two-wire and around the right side that is placed on stator (6); Winding (L ₁) end (is the E among Fig. 3 ₁End) with winding (L ₂) end (be the E among Fig. 3 ₂End) joins winding (L ₁') top (be the S among Fig. 3 ₁' end) with winding (L ₂') top (be the S among Fig. 3 ₂' end) joins.When K switch was connected to the CW end, power supply was entered by K, through winding (L ₁) and (L ₂), enter brush (1) by the lug plate (3) on the brush (1) again, enter rotor (8) by commutator (4) again, pass through brush lug plate (3 ') then and get back to power supply, thereby motor is turned clockwise.When K switch was connected to the CCW end, power supply was entered by K, through winding (L ₁') and (L ₂'), later road is through the same, but because winding (L ₁') and (L ₂') the mode of connection and winding (L ₁) and (L ₂) the mode of connection just opposite, make that the excitatory direction of stator (6) is opposite, and the excitatory direction of rotor does not become, and motor is counterclockwise rotated.

Fig. 4 has represented the reversing mode of capacitor motor, and wherein C is an electric capacity, and L is the stator winding of motor.The reversing mode that this shows this motor is the same with capacitor motor simple, and it can make automatic control circuit greatly simplify.

A RC grid of being made up of R1 and C1 is gone up and connect to rotor of the present utility model (8), and purpose is to eliminate the spark interference.

The outstanding advantage of the utility model is that ratio of starting torques capacitor motor is much bigger, and when Same Efficieney, weight only is about 1/5 of capacitor motor, and price is also cheap than capacitor motor. This staring torque is big, and commutating easily, motor is particularly suitable for using in the household electrical appliances automatic control system.

Claims

1, a kind of reversible single phase alternating current (A.C.) series excited machine, comprise brush (1), brush carriage (2), lug plate (3), commutator (4), support (5) and (7), stator (6), rotor (8), winding (9), it is characterized in that: the winding (9) on the stator (6) is by four winding (L ₁), (L ₁'), (L ₂), (L ₂') form; Winding (L ₁) and (L ₁') two-wire and around stator (6) one sides, winding (L ₂) and (L ₂') two-wire and around the opposite side of stator (6); Winding (L ₁) and (L ₂) switch through an end of son (8), winding (L after the series connection ₁') and (L ₂') by relative winding (L ₁) and (L ₂) switch through the same end of son (8) after the series connection of opposite connected mode.

2, reversible single phase alternating current (A.C.) series excited machine according to claim 1 is characterized in that: a RC network is gone up and connect to rotor (8).