SU1206899A1 - Electric motor - Google Patents

Description

The invention relates to electric machines, in particular to heavily ventilated loaded machines.

The aim of the invention is to increase the cooling efficiency.

Fig, 1 shows an electric motor general view; in fig. 2 shows a section A-A in FIG. 1 (inductor of an auxiliary electric motor); in fig. 3 - connection diagram of the windings of the electric motor and excitation windings of the auxiliary electric motor,

The electric motor contains an inductor 1, a measles 2 with a winding 3 mounted on the shaft 4, a housing 5, bearing 1 and 6 and 7, On the shaft 4 rotatably mounted fan 8 mounted on the bark

9 auxiliary motor

10 on the side of the bearing shield 6 The stator 11 of the auxiliary electromotor 10 is mounted on the bearing shield 6 and is made in the form of alternating active poles 12 with windings 13 of the base shaft, which are included in the winding circuit 3 cor 2

068992

. motor, and passive poles 14, made for example in the form of permanent magnets 15.

Passive poles 14 can be made .j with parallel excitation windings without regulation. In this case, in a magnetic relation, the active and passive poles 12 and 14 create counter magnetic fluxes.

The motor works as follows.

When you turn on the electric motor in the network measles comes into rotation. Due to the counter-activation of the active and passive poles of the auxiliary electric motor, the rotation frequency of its core and fan will increase with increasing load current of the electric motor, due to the weakening of the floor in the gap.

Adjusting the fan speed in: depending on the load current will improve the cooling efficiency of the motor.

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Compiled by V.Tregubov Editor R.Tsitsika Tehred A.Ach Proofreader S.Cherni

Order 8730/56 Circulation: Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, ul..Proektna, 4

Claims (1)

ELECTRIC MOTOR, containing inductor, armature with a winding mounted on the shaft, housing and bearing shields, a fan mounted on the shaft with the possibility of rotation and mounted on the anchor of the auxiliary motor from the side of one bearing shield, the stator of which is mounted on the bearing shield, characterized in that , in order to increase the cooling efficiency of the electric motor, the stator of the auxiliary electric motor is made in the form of alternating poles with excitation windings included in the circuit ki motor armature and poles in the form of permanent magnets. Q