RU1860U1 - TWO SPEED SINGLE-PHASE ASYNCHRONOUS MOTOR FOR DRIVING A WASHING MACHINE - Google Patents

Abstract

TWO SPEED SINGLE-PHASE ASYNCHRONOUS MOTOR FOR DRIVING A WASHING MACHINE, comprising a stator made of steel and copper windings, a rotor with a blower fan at one end of its shaft, characterized in that an exhaust fan is installed at the other end of the rotor shaft, and the ratio of the number of stator slots and rotor rotor equal to 0.87.

Description

. 5-

TWO-SPEED ONE-HOUSE TSH OWN WASHING MACHINE DRIVER DAY ENGINE.

The utility model relates to household appliances, in particular to electric motors for driving washing machines.

Known two-speed single-phase asynchronous motors for driving washing machines, containing a stator made of steel and copper windings, a rotor, a blower fan mounted on the end of the rotor shaft, while the ratio of the stator and rotor slots is 0.83 / l7.

The disadvantage of these engines is the high consumption of steel and copper and poor reliability due to insufficient cooling.

Known two-speed single-phase asynchronous motors for driving washing machines containing a stator made of steel with copper windings, a rotor, a blower fan mounted on the end of the rotor shaft, while the ratio of the grooves of the stator and rotor is 0.83 / zu.

However, the disadvantages of these engines are also: high consumption of steel and honey, as well as poor reliability in operation due to insufficient engine cooling.

The aim of the proposal is to reduce engine weight and

increase it on, reliability. - - For this, in a two-speed single-phase single-phase | X |) engine

for driving a washing machine comprising a steel stator and its

copper windings, a rotor with a discharge fan at one end of the rotor shaft mounted exhaust fan on the other

MKI 5 cl. DO® 17/08

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The utility model is illustrated in the figure in which it is shown: in Fig. 1, a two-speed single-phase, asynchronous motor for a washing machine drive (section) - -.

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   ; -7b., Yes FIG. 2 (g) of the rotor; yes; ($ ig; 3;

 Two-speed single-phase one-way asynchronous d: the drive for driving the washing machine contains (Fig. 1) a stator I made of steel, its windings 2 made of copper, a rotor 3 with a discharge 4 and exhaust fan 5 at the ends of the shaft 6 of the rotor 3 groove insulation 7 of the stator (Fig. 1). 2). The ratio of the number of grooves 8 of the stator and the grooves of 9 of the rotor is 0.87 (for a motor with a power of 250/75 W, the number of grooves of the stator is 48, and the rotor is 55).

The slot insulation 7 of the stator is made of a film of syntocardboard / 3 /,

Washing machine (not shown) - joins

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To the end of the shaft 6 of the rotor 3 from the side of the exhaust fan 5.

To ensure the best working conditions, a two-speed single-phase asynchronous motor can be equipped with a capacitor (not shown in the figure).

Changing the geometry of the sheets of steel of the stator I and rotor 3 by increasing the ratio of the number of grooves 8, 9 of the stator and rotor to 0.87 makes it possible to achieve a greater distribution of stator windings and reduce copper consumption in them.

When the engine is operating, the blower fan 4 draws in air that flows around the frontal parts 10 of the stator windings 2,

passes between the stator I and the rotor 3. At the same time, the exhaust fan 5 improves cooling of the engine, allowing to reduce the heating of the stator and rotor, reduce the consumption of stator steel and increase the reliability of the engine.

Claims (1)

TWO SPEED SINGLE-PHASE ASYNCHRONOUS MOTOR FOR DRIVING A WASHING MACHINE, comprising a stator made of steel and copper windings, a rotor with a blower fan at one end of its shaft, characterized in that an exhaust fan is installed at the other end of the rotor shaft, and the ratio of the number of stator slots and rotor rotor equal to 0.87.