SU1415329A2 - Electric machine - Google Patents

Abstract

And ii) shaving refers to alektrotohksiks and is additional to the main author. St. L o 660151. The purpose of the invention is to increase the cooling efficiency by reducing the aerodynamic coefficient against 1i. The electric mantle contains radial channels 2, located in additional packages 1 of the rotor magnetonoveductor and made with expansion towards the axis of the shaft and outer diameter of the rotor diameter. 2 Il.

Description

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Isobregeiio refers to e.tektrots.nike, namely to the section of cooling electric machines, and is an improvement of the device according to ed. St. No. 660151.

The known electric machine contains a stator with radial channels and a rotor having magnetic core packages with axial channels, a winding and radial elements installed between the packages with the formation of radial channels communicating with axial, to improve processability while reducing ventilation The radial elements are made in the form of additional packages of the magnetic circuit, the grooves that are made open at the periphery and serve as radial channels.

The purpose of the invention is to improve cooling performance by reducing aerodynamic drag.

FIG. 1 image we offer electric machine, longitudinal section; in fig. 2 a section .Л-.Л in FIG. I.

In the additional packages 1 of the rotor magnetic pipe, there are open grooves serving with radial channels 2, which communicate with axial ventilation channels of the 1P {channels, made in the back of the packages 4, and radial ventilation pipes with 5 Mai nitropipe the stator 6. The circulating flow of the inner tube of the probe is detected by the pressure elements 7 located on the shaft 8 of the rotor tube. Through pipes 9 B1) of the air coolers K), external air flows through the pressure element 11. In zone 12 of the back of the additional packages 1 of the rotor magnetic circuit, radial channels. 2 of them are extended with expansion towards the axis of the shaft 8, and in the dentate zone of them 13 with expansion towards the outer diameter of the rotor. Output / l

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W. I of the pressure elements 7 refrigerant enters the frontal part 14 of the stator winding 6 and the axial channels 3 of the rotor magnetic core. From the axial channels 3, the coolant enr enters the radial channels 2, from where it enters the radial channels 5 of the magnetic circuit of the stator 6. From the frontal parts 14 of the stator winding and the radial channels 5 of the stator magnetic conductor, the flow of the coolhept enters the annular heat exchanger 10, from where they enter the pressure elements 7.

B1 filling in additional packages of the rotor magnetic core of the radial channels extending in the direction of the shaft axis and the L rotor diameter allows reducing the aerodynamic resistance of the radial canals. QW pOTOjta and enhance the coolant flow inlet ii radial channels of the stator during a rad. 1 but sog. 1 hour ventilation. As a result, the aerodynamic resistance of the ventilator pionogram of the radial channels of the rotor-stator radial channels decreases significantly and the coolant flow rate through the radial channels of the rotor-stator increases, which increases the effective Hot Tb cooling of the electrical magpina.

Thus, a positive effect of the proposed technical solution is to increase the cooling efficiency of the electrical map by 5.

Claims (1)

Invention Formula Electric on auth. St. XY 660151, characterized by the fact that (;, with the efficiency of cooling by means of aerodynamic (h) resistance, radial channels arranged in additional t. Rotor magnetic core packages (;; shaft and outer diameter of the rotor.