SU1206893A1 - Sealed electric motor - Google Patents

Description

one

The invention relates to electrical engineering, more specifically to sealed electric motors used in pumps and mechanisms operating in corrosive environments.

The aim of the invention is to increase the energy performance by reducing the thickness of the sleeves.

Figure 1 shows an asynchronous motor, a longitudinal section; in fig. 2 - groove element on the stator with an elastic element.

The electric motor consists of a stator 1 of the rotor 2, a sleeve of the stator 3, a sleeve of the rotor 4 and installed at the ends of the pressure cups 5 of the rotor and the pressure cups 6 of the stator.

On the active surfaces of the rotor, the stator and on the inner surface of the pressure cups, annular helical grooves are made, and on the sleeves, the corresponding grooves are corrugated, while elastic wires 7 are installed in said corrugations.

When making the corrugations and their corresponding grooves with screw sleeves are screwed and welded on the ends of the pressure cups, whether the sleeve is preformed j this final molding is performed together with the cores.

When the liner is deformed, it can be preheated by current, magnetic field, etc.

On the surface of the cores with grooves or on the corresponding surface of the sleeves to eliminate electrical contact (clogging)

Ec2068932

those. loss reduction, prior to assembly, an insulating layer is applied (by spraying, spreading, etc.) from bonding; its glue (varnish), powder

5 plastics, porcelain, etc. The thickness of the insulating layer is not more than 0.2 of the thickness of the sleeve.,

To further increase the rigidity, elements 7 (Fig. 2) of spring wire of round, semicircular, and other shapes are installed with a thin layer of environmentally resistant material (for example, fluorine-15 layer) or stainless carbonized . become. The dimensions of the elastic elements are chosen so that in the working position they oppose the bulging of the sleeve, i.e. their

20, the outer diameter in the free state is larger than the largest diameter along the bottom of the corrugations in the stator sleeve. When performing helical corrugations, the elastic element is in the form of a spiral

25 springs. The springs should not protrude beyond the dimensions of the sleeves.

0

five

During operation, due to the increase in stiffness and stability of the liner, its thickness, reduced by 30% or more (depending on its thickness, design of the toothed zone of the cores and pitch along the grooves) makes it possible to increase the energy indices.

At the same time, when the corrugations and their respective screw grooves are made, the pressure of the medium between the rotor and the stator is additionally enhanced, which improves cooling.

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

Order 8730 / 56r Circulation: Subscription

VNIIPI USSR State Committee

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

Branch ShSh Patent, Uzhgorod, st. Project, 4

Claims (1)

SEALED ELECTRIC MOTOR pressure cups placed on their active surfaces and ends installed on the ends, characterized in that, in order to increase energy performance by reducing the thickness of the sleeves, grooves are made on the active surfaces of the rotor, stator and on the inner surface of the pressure cups, and corresponding grooves of the corrugation, while in the said corrugations installed elastic A TELE containing a stator, a rotor with wide wire elements. FIG. 1 SU „„ 1206893