SU1206898A1 - Linear electric motor - Google Patents

Description

The invention relates to electrical engineering, in particular, to linear electric machines with air ah-laser.

The aim of the invention is to increase the intensity of cooling of a linear motor.

Fig. 1 depicts the described electric motor, a longitudinal section; in fig. 2 is a sectional view in FIG. (runner with internal insert),

The linear electric motor includes a stator housing 1, made in cylinder B1, in which winding coils 2, magnetic core 3 and runner 4, Ea x) are placed with the bottom of the stator ends (the side opposite to the working end of the runner, drive w, is in motion. An extension body of the mechanism) is installed cylinder 5, forming a separate chamber, inside which poi o moves nopaieHb 6 fixed on runner. In case of using a tubular runner cylinder 5 is closed with a hook 7. In case of large diameters of a tubular runner, insert 8 is placed in it. with syst my valve 9 there is a valve, air-permeable air from the inner runner channel 10 of the cylinder, and valves

passing air from chamber Yu to chamber 12,

Elktrodvigatel works as follows.

In an engine without a valve system, when the runner SoTeva moves forward (FIG. 1), the piston sucks air through the gap 8 between the hole in the front part of the body and the runner into chamber 12. At the opposite end of the runner

ten

15

06898

and the direction of air flow in the gap S between the runner and the end part of the body (under the action of the piston 6, the air pulls out of the chamber 12 through 5 the gap 5). Thus, during operation of the electric motor, air is supplied that removes heat from the inner surface of the stator windings and the outer surface runaway

As the power of the electric motor increases, the diameter of the runner increases. In this case, it is hollow in the form of a pipe. To increase the flow rate of air inside the runner and increase the intensity of cooling of its inner surface, an insert is inserted into the runner, one of the embodiments of which is shown in Fig. 2,

The engine with air valves works as follows.

When the runner moves from right to left, the air through the internal air channel 25 through valve 9 enters chamber 10. Valves 11 prevent air from passing from chamber 12 to chamber 10, and air from chamber 12 passes through the gap between the stator and the runner and removes heat from the stator windings and the runner surface. When the runner moves from left to right, the valve 9 closes and air 11 between the chambers 10 and 12 passes through the valves 11. The next time the runner moves from right to left, the chamber 10 is filled and the stator and the runner are filled engine In this way, the valve system allows unidirectional air flow in the gap between the stator and the runner.

20

thirty

35

YU

Fas.g

extra

T5fazh

Order 8730/56

Branch of the GSP Patent,

Uzhgorrd, unitary enterprise. Project Ai

Claims (2)

1. LINEAR ELECTRIC MOTOR- A TELE containing a stator with windings installed in the housing, a runner and a forced air cooling system made in the form of a separate chamber mounted on the end of the housing, in which a piston is connected, connected with the runner passing through the holes in the end parts of the housing, characterized in that that, in order to increase the cooling intensity, the chamber is closed, the runner and piston have a through axial channel communicating with the atmosphere, while the holes in the end parts of the body form annular rings with the surface of the runner Zora through which working air gap communicates with the atmosphere and the cavity chamber. 2. The electric motor according to claim 1, characterized in that, 9 holes are made in the piston, while valves are installed in the through channel and in the piston holes. Fig 1